CN111366059A - Special detection device for flange - Google Patents
Special detection device for flange Download PDFInfo
- Publication number
- CN111366059A CN111366059A CN202010325004.2A CN202010325004A CN111366059A CN 111366059 A CN111366059 A CN 111366059A CN 202010325004 A CN202010325004 A CN 202010325004A CN 111366059 A CN111366059 A CN 111366059A
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- CN
- China
- Prior art keywords
- flange
- rod
- cross rod
- diameter
- detection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
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- 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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- 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
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
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- 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
- G01B5/08—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters
- G01B5/12—Measuring arrangements characterised by the use of mechanical techniques for measuring diameters internal diameters
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- 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
- G01B5/143—Measuring arrangements characterised by the use of mechanical techniques for measuring distance or clearance between spaced objects or spaced apertures between holes on a workpiece
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- 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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
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- 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
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
Abstract
The invention relates to a special device for flange detection. The technical scheme is as follows: the utility model provides a flange detects specialized tool which characterized in that: the tool comprises a movable measuring tool and a detection platform matched with the measuring tool; the measuring tool is a cross rod which is horizontally arranged, four cylinders which are symmetrical to the center of the cross rod and are positioned on the same circumference are uniformly distributed on the lower surface of the cross rod, the length of a connecting line of the centers of the two cylinders which are symmetrically arranged corresponds to a standard value of the diameter of a central circle of a flange bolt hole, and the circumferential arc-shaped distance between the centers of the two circumferentially adjacent cylinders corresponds to a standard value of the distance between a plurality of adjacent bolt holes of a flange; the diameter of each cylinder is suitable for the diameter of the flange bolt hole, the axis of each cylinder is perpendicular to the lower surface of the cross rod, a small hole is formed in the center of the cross rod, and a needle rod is movably inserted into the small hole. The device should be able to overcome traditional detection inefficiency, and the technological level requires high shortcoming, realizes the short-term test to the batched flange.
Description
Technical Field
The invention relates to a special device for detecting flanges, in particular to a device for detecting whether the machining sizes of the flanges are qualified or not, and particularly relates to a device for realizing batch and rapid detection of the flanges.
Background
The forged steel flange is one kind of pressure pipeline element and may be produced by making unit with available manufacture license. The manufacturing quality of the flange depends on the raw material quality of the flange forging stock and the machining precision of the flange. The flange can not be used alone, and can be used only by being combined with other elements. The most important of the machining sizes of the flanges is the matching sizes of the flanges and the pipelines and the flanges and the valves. At present, flange manufacturers basically do not carry out final detection on the matching size of the flange, and because the traditional vernier caliper, the micrometer and the steel plate ruler are adopted, the detection efficiency is very low, and the requirements on the technical level and the proficiency of detection personnel are higher.
The number of bolt holes of the flange is usually 4, 8, 12, 16, 20 and 24, and is generally an integral multiple of 4. Common nominal diameters are DN50, DN100, DN150, DN200, etc., and common nominal pressures are PN10, PN16, PN25, PN40, etc. The geometric dimension of the flange is a standard series, and the product is produced in a sizing and batch mode.
The matching size of the flange comprises the diameter of a central circle of a bolt hole of the flange, the distance between adjacent bolt holes, the diameter of the bolt hole, the coaxiality of the central circle of the bolt hole and a processed sealing surface, the parallelism of a sealing surface of the flange and a bolt supporting surface, the outer diameter of the flange, the inner diameter of the flange and the thickness of the flange. These 8 machining dimension checks, all flanges should be tested for these items, i.e. these items are essential items. The flange production is generally batch production, the quantity of the same batch of flanges with nominal pressure and nominal diameter is hundreds or even thousands, and the detection standard requirements are carried out one by one. At present, no special rapid detection tool exists, so that the special rapid detection tool for the flange is designed, and is an effective means for improving the detection efficiency and preventing the products from being unqualified in batch.
Disclosure of Invention
The invention aims to overcome the defects of the background technology and provide a special detection device for flanges, which can overcome the defects of low traditional detection efficiency and high technical level requirement and realize the rapid detection of batch flanges.
The technical scheme provided by the invention is as follows:
the utility model provides a flange detects specialized tool which characterized in that: the tool comprises a movable measuring tool and a detection platform matched with the measuring tool; the measuring tool is a cross rod which is horizontally arranged, four cylinders which are symmetrical to the center of the cross rod and are positioned on the same circumference are uniformly distributed on the lower surface of the cross rod, the length of a connecting line of the centers of the two cylinders which are symmetrically arranged corresponds to a standard value of the diameter of a central circle of a flange bolt hole, and the circumferential arc-shaped distance between the centers of the two circumferentially adjacent cylinders corresponds to a standard value of the distance between a plurality of adjacent bolt holes of a flange; the diameter of each cylinder is matched with that of the flange bolt hole, the axis of each cylinder is perpendicular to the lower surface of the cross rod, a small hole is formed in the center of the cross rod, a needle rod is movably inserted into the small hole, and scales are marked on the needle rod along the length direction;
the detection platform is a circular flat plate, a datum point is arranged at the center of the circular flat plate, the datum point is used as the center, half of the outer diameters of the flanges DN50, DN100, DN150 and DN200 are used as the radius, and four outer limiting holes used for detecting the outer diameters of the flanges are circumferentially arranged at intervals of 90 degrees; the cylindrical limiting rod is movably inserted into the limiting hole; meanwhile, two inner limiting holes for detecting the inner diameter of the flange are circumferentially arranged at intervals of 180 degrees by taking half of the inner diameter of the flange of DN50, DN100, DN150 and DN200 as the radius; the inner limit hole is movably inserted into the cylindrical limit rod.
Preferably, a plurality of screw holes for fixing the cylinder are formed in the cross rod, so that the detection requirements of a plurality of flanges with different diameters are met.
Preferably, the diameter of the small hole is phi 4mm, and the diameter of the needle rod is phi 3.8 mm.
Preferably, the circular flat plate is a steel flat plate.
Preferably, the diameters of the outer limiting hole and the inner limiting hole are both phi 10 mm; the diameters of the cylindrical limiting rods are phi 9.8 mm.
Preferably, the cylindrical limiting rod is a steel rod.
Preferably, the measuring tool is provided with a handle.
Preferably, the needle rod is a steel needle.
The working principle of the invention is as follows:
because the number of the flange bolt holes is integral multiple of 4, the diameter deviation of the center circle of the flange bolt hole is measured by utilizing the length of the cross rod; if the diameter of the central circle of the flange bolt hole exceeds the standard, the cylinder on the lower surface of the cross rod cannot be inserted into the flange bolt hole; the circumferential arc length of every two circumferentially adjacent cylinders between the cross rods is used for positioning and detecting the distance between adjacent bolt holes of the flange, and if the deviation exceeds the standard, the cylinders on the lower surface of the cross rods cannot be inserted into the bolt holes of the flange; the diameter of the cylinder on the lower surface of the cross rod can be used for detecting whether the diameter of the flange bolt hole exceeds the standard, and if the deviation exceeds the standard, the cylinder cannot be inserted into the bolt hole; comparing the needle point of a central needle rod (steel needle) of the cross rod with the datum point of the platform, and measuring the coaxiality deviation of the central circle of the bolt hole and the processed sealing surface; the distance from the needle tip of the needle rod to the lower surface of the cross rod is used for measuring the thickness deviation of the flange. The size of the contact gap between the lower surface of the cross rod and the machined flange sealing surface is used for measuring the parallelism deviation between the flange sealing surface and the bolt supporting surface. 4 outer limiting rods (steel rods) circumferentially arranged on the detection platform are used for determining whether the outer diameter of the flange exceeds the standard, and 2 inner limiting rods circumferentially arranged on the detection platform are used for determining whether the inner diameter of the flange exceeds the standard.
The invention has the beneficial effects that:
the special device for detecting the flange can detect the detection items of the machining size of the flange 8 at one time, and can be found by a detection tool as long as one item exceeds the standard. For the detection of flange products in batches, the production rate can be greatly improved.
Drawings
Fig. 1 is a schematic front view of the measuring tool of the present invention.
FIG. 2 is a schematic top view of the measuring tool of the present invention.
FIG. 3 is a schematic front view of the inspection platform of the present invention.
FIG. 4 is a schematic top view of the inspection platform of the present invention.
Fig. 5 is a schematic view of the state of use of the present invention.
Fig. 6 is a front view of a flange having four bolt holes.
Fig. 7 is a schematic bottom view of a flange with four bolt holes.
Fig. 8 is a front view of a flange equipped with eight bolt holes.
Detailed Description
The present invention will be further described with reference to the drawings attached to the specification, but the present invention is not limited to the following examples.
As shown in fig. 6, 7 and 8, the flange 1 has 4 bolt holes, and also has a flange with 8 bolt holes, and the flange a surface is a bolt hole supporting surface and is used for contacting a nut; the surface b is a flange sealing surface and is used for adding a sealing ring when the two flanges are connected.
FIG. 1 shows a measuring tool in a special tool for flange detection; the lower surfaces of the cross bars 6 are in the same plane, and the cylinders 5 can be fixed on the lower surfaces of the cross bars through thread matching structures (preferably screw holes), and the axes of the cylinders are perpendicular to the lower surfaces of the cross bars. The cylinder 5 is used for detecting the diameter of the flange bolt hole, so the diameter is suitable for the size of the flange bolt hole; the cylinder of corresponding size can be makeed into according to the bolt hole of different flanges, forms and detects serial instrument. Two cylinders in the length direction of each rod in the cross rod are used for detecting the diameter deviation of a bolt hole center circle, two cylinders adjacent in the circumferential direction are used for detecting the adjacent bolt hole spacing deviation (the circumferential arc spacing of the centers of the two circumferentially adjacent cylinders corresponds to the spacing standard values of a plurality of bolt holes adjacent to a flange, wherein the number of the two cylinders is determined according to the number of the bolt holes of the flange, if the number of the two cylinders is 8, the number of the two cylinders is 3, and if the number of the two cylinders is 12, the number of the two cylinders is 4); handle 7 is used for making things convenient for flange to detect specialized tool's position control when detecting, and needle bar 8 (preferred steel needle) is used for surveing the bolt hole central circle and processes the axiality deviation of sealed face, and the flange thickness deviation is surveyed to the distance of needle bar 8 needle point to cross-bar lower surface. The contact clearance between the lower surface d of the cross rod 6 and the flange processing sealing surface is used for measuring the parallelism deviation between the flange sealing surface and the bolt supporting surface.
Furthermore, a plurality of screw holes for fixing the cylinder can be formed in the cross rod, so that the detection requirements of a plurality of flanges with different diameters (such as flanges with specifications of DN50, DN100, DN150 and DN 200) can be met.
FIGS. 3 and 4 show the inspection platform 3; an outer limiting hole 4 is arranged on the platform, and a cylindrical limiting rod 2 (preferably a steel rod) can be inserted into the outer limiting hole; the outer side of the flange with the same nominal diameter is limited by 4 limiting steel rods to limit the placement position of the flange, and the outer circle diameter of the flange is detected to be overproof or not; the platform is also provided with 2 inner limiting holes 10 inserted into the cylindrical limiting rods (preferably steel rods) for detecting whether the diameters of the inner sides of the flanges exceed standards. According to the flanges with different nominal diameters, the cylindrical limiting rods are placed in different limiting holes, and detection can be carried out. The detection platform is provided with limiting holes which are arranged in a central symmetry manner, and numbers such as DN50, DN200 and the like are marked on the radial direction beside the limiting holes, so that the positions where the cylindrical limiting rods are inserted can be conveniently found.
FIG. 5 is a view showing a use state of the special device for flange detection, and if a flange 1 can be placed between cylindrical limit rods 2 on a flange detection platform 3, the outer diameter and the inner diameter of the flange are processed according to requirements; then, the measuring tool is placed on the flange, the cylinder 5 can be completely placed into the 4 bolt holes, and the gap between the cylinder 5 and the bolt holes does not exceed the standard, so that the diameter of the bolt holes meets the requirement, the diameter of the central circle of the bolt holes meets the requirement, and the distance between the bolt holes also meets the requirement; and if no gap exists between the lower surface of the cross rod 6 and the flange sealing surface visually, the parallelism between the flange sealing surface and the bolt supporting surface meets the requirement. If the needle point of the steel needle 8 is basically consistent with the datum point c of the platform, the coaxiality of the central circle of the bolt hole and the processed sealing surface meets the requirement. And (4) designing the scale value on the steel needle 8 to be consistent with the thickness value of the flange, and indicating that the thickness of the flange is consistent with the requirement.
The size of the die of the special device for detecting the flange provided by the invention is set according to the required range of the manufacturing standard deviation by considering the allowable deviation range of the manufacturing standard.
Claims (8)
1. The utility model provides a flange detects specialized tool which characterized in that: the tool comprises a movable measuring tool and a detection platform matched with the measuring tool; the measuring tool is a cross rod (6) which is horizontally arranged, four cylinders (5) which are symmetrical to the center of the cross rod and are positioned on the same circumference are uniformly distributed on the lower surface of the cross rod, the length of a connecting line of the centers of the two symmetrically arranged cylinders corresponds to a standard value of the diameter of a central circle of a flange bolt hole, and the circumferential arc-shaped distance between the centers of two circumferentially adjacent cylinders corresponds to a standard value of the distance between a plurality of bolt holes adjacent to the flange; the diameter of each cylinder is matched with that of the flange bolt hole, and the axis of each cylinder is perpendicular to the lower surface of the cross rod; a small hole is arranged at the central part of the cross rod, a needle rod (8) is movably inserted into the small hole, and scales are marked on the needle rod along the length direction;
the detection platform is a circular flat plate, the center of the circular flat plate is provided with a datum point (c), the datum point is used as the center, half of the outer diameters of the flanges DN50, DN100, DN150 and DN200 are used as the radius, and four outer limiting holes (4) used for detecting the outer diameters of the flanges are circumferentially arranged at intervals of 90 degrees; the cylindrical limiting rod (2) can be movably inserted into the limiting hole; meanwhile, two inner limiting holes (10) for detecting the inner diameter of the flange are circumferentially arranged at intervals of 180 degrees by taking half of the inner diameter of the flange of DN50, DN100, DN150 and DN200 as the radius; the inner limit hole is movably inserted into the cylindrical limit rod.
2. The flange detection special tool according to claim 1, characterized in that: a plurality of screw holes used for fixing the cylinder are formed in the cross rod, so that the detection requirements of a plurality of flanges with different diameters are met.
3. The flange detection special tool according to claim 2, characterized in that: the diameter of the small hole is phi 4mm, and the diameter of the needle rod is phi 3.8 mm.
4. The flange detection specialized tool of claim 3, wherein: the circular flat plate is a steel flat plate.
5. The flange detection special tool according to claim 4, wherein: the diameters of the outer limiting hole and the inner limiting hole are both phi 10 mm; the diameters of the cylindrical limiting rods are phi 9.8 mm.
6. The flange detection special tool according to claim 5, wherein: the cylindrical limiting rod is a steel rod.
7. The flange detection specialized tool of claim 6, wherein: the measuring tool is provided with a handle.
8. The flange detection specialized tool of claim 7, wherein: the needle rod is a steel needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010325004.2A CN111366059A (en) | 2020-04-23 | 2020-04-23 | Special detection device for flange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010325004.2A CN111366059A (en) | 2020-04-23 | 2020-04-23 | Special detection device for flange |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111366059A true CN111366059A (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010325004.2A Pending CN111366059A (en) | 2020-04-23 | 2020-04-23 | Special detection device for flange |
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| Country | Link |
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| CN (1) | CN111366059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357996A (en) * | 2021-03-16 | 2021-09-07 | 中国航发哈尔滨东安发动机有限公司 | Stud height inspection tool and inspection method |
-
2020
- 2020-04-23 CN CN202010325004.2A patent/CN111366059A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357996A (en) * | 2021-03-16 | 2021-09-07 | 中国航发哈尔滨东安发动机有限公司 | Stud height inspection tool and inspection method |
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