CN105548371A - Test block for ultrasonic non-destructive testing of electrical contact of low-voltage electric appliance as well as combination and application thereof - Google Patents
Test block for ultrasonic non-destructive testing of electrical contact of low-voltage electric appliance as well as combination and application thereof Download PDFInfo
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Abstract
The invention discloses a test block for ultrasonic non-destructive testing of an electrical contact of a low-voltage electric appliance as well as a combination and an application thereof. The test block consists of three parts: a convex part, a circular-ring-shaped sealing part and a seal cover, wherein the circular-ring-shaped sealing part is installed at the bottom of the convex part; the round seal cover is arranged at the top of the convex part; the circular-ring-shaped sealing part is positioned between the convex part and the seal cover; the convex part adopts an overall convex structure, and the upper and the lower parts of the convex shape are cylinders or cuboids; trapezoidal holes are formed in the convex part. The test block separately uses any one test block or an arbitrary combination of a plurality of test blocks. The test block disclosed by the invention can be conveniently used by detection personnel for performance test and sensitivity adjustment of probes and detection equipment, adjustment when a special-shaped workpeice is detected, measurement scope adjustment and other works.
Description
Technical field
The invention belongs to UT (Ultrasonic Testing) equipment technology field, more particularly, relate to a kind of low-voltage electrical apparatus electrical contact Non-Destructive Testing test block and combination thereof and application.
Background technology
Ultrasound examination is one of lossless detection method be most widely used at present.It has, and penetration power is strong, equipment is light, testing cost is low, detection efficiency is high, and immediately can know the advantages such as testing result.
In the Non-Destructive Testing industry of low-voltage electrical apparatus, the quality of welding quality is the foundation of ratio of brazing area as evaluation of sweeping image by measuring C.In reality detects, the sensitivity and other the relevant testing conditions that record checkout equipment quantitatively is often not enough to only by the various adjustment buttons on checkout equipment panel, this measures with regard to specified rate and follow-up checking brings difficulty, is also inconvenient to the performance measuring detection system simultaneously.
Existing test block has international standard test block and national standard test block, but reference block often complex structure, and different reference blocks due to its main application of difference of composition different, testing staff is very inconvenient when choice and operation.
Find through retrieval, Chinese patent CN104777235A, disclose a kind of low-voltage electrical apparatus electric contact Ultrasonic Nondestructive cambered surface plagiohedral test piece, comprise test block, described test block is rectangular parallelepiped, described rectangular parallelepiped lower surface and side surface are plane, and the face of cylinder and second plane of to be the second inclined-plane, the arc radius of 10 ~ 20 ° be the first inclined-plane, angle of inclination that upper surface is 1 ~ 10 ° by the first plane, angle of inclination 10 ~ 50mm are connected in sequence.This invention takes into full account the features of shape of Low Voltage Electrical Apparatus electrical contact, can coordinate ultrasound scanning, completes ultrasonic probe and demarcates the detectability with inclined-plane or arc surface workpiece; The deficiency of the test block specified in other multiple standards can be made up, increase work efficiency, have highly application value.
Although more than invention can provide a set of ratio more complete test block, when reality uses, still can not complete the demarcation to detection system according to scanning result rapidly, meanwhile, the performance test of checkout equipment can not be carried out easily.
Summary of the invention
For above-mentioned defect of the prior art, the object of the invention is to design a kind of low-voltage electrical apparatus electrical contact Ultrasonic Nondestructive test block and combination thereof and application, can be convenient to use in probe, the performance test of checkout equipment, the adjustment of sensitivity for testing staff, the work of the aspects such as adjustment during detection special shape workpiece and the adjustment of measurement range.
For achieving the above object, the technical solution used in the present invention is:
The invention provides a kind of low-voltage electrical apparatus electrical contact Ultrasonic Nondestructive test block, described test block is made up of three parts: Part I is convex parts, and Part II is annular seal parts, and Part III is gland bonnet; Described annular seal parts are arranged on described convex feature bottom, and described circular seal lid is arranged on described convex component top, and described annular seal parts are between described convex parts, described gland bonnet; Described convex parts refer to overall in convex structure, and two parts up and down of convex are all right cylinder or rectangular parallelepiped; Described convex components interior is equipped with trapezoidal hole.
Further, the described right cylinder of convex parts or the bottom of rectangular parallelepiped are provided with toroidal cavity, and are provided with threaded hole; Described circular ring shaped rubber sealing gasket is arranged in described toroidal cavity; Described gland bonnet is provided with threaded hole, and the corresponding threaded holes bottom described threaded hole and described convex right cylinder or rectangular parallelepiped closes, thus is integrated by described three partial fixings by screw.
In an optimal way: described test block, two parts up and down of its convex parts are right cylinder, and right cylinder upper surface is plane, and inside is provided with trapezoidal hole, and this kind of structured testing block is called plane test block.
Further, described plane test block is divided into two kinds, during use optional one or both:
The first: plane test block, its right cylinder inside has a trapezoidal hole, and trapezoidal hole and exterior cylindrical coaxial; Described trapezoidal hole is blind hole, and the cylindrical upper surface of distance from top of described trapezoidal hole has a thickness; The described trapezoidal hole base diameter of described test block is larger than described trapezoidal hole top diameter;
The second: plane test block, its right cylinder inside is provided with first, second upper and lower two trapezoidal holes; Described second trapezoidal hole is positioned at described first trapezoidal lower position; The top of described second trapezoidal hole is the bottom of described first trapezoidal hole; There is a thickness at the top of described first trapezoidal hole to right cylinder upper surface, and described first trapezoidal hole base diameter is larger than described first trapezoidal hole top diameter; The base diameter of described second trapezoidal hole is greater than the top diameter of described second trapezoidal hole.
In an optimal way: described test block, two parts up and down of its convex parts are right cylinder, and the cylindrical upper surface of described the first half is sphere; This kind of structured testing block is called Spherical Test block.
Further, described Spherical Test block, its right cylinder inside is provided with a trapezoidal hole, and described trapezoidal hole is coaxial with described right cylinder; There is a thickness in the center of circle, top of the inner trapezoidal hole of described test block to described sphere; Described test block trapezoidal hole base diameter is greater than described trapezoidal hole top diameter.
In an optimal way: described test block, the first half of its convex parts is class rectangular parallelepiped, and the latter half is rectangular parallelepiped; Described class rectangular parallelepiped refers to that the upper surface of rectangular parallelepiped is the face of cylinder, and it is projected as square; This kind of structured testing block is called face of cylinder test block.
Further, test block inside, the described face of cylinder is provided with a trapezoidal hole, and the center of described trapezoidal hole is the center of described class rectangular parallelepiped; There is a thickness in the center of circle, top of the inner trapezoidal hole of described test block to the described face of cylinder; Described test block trapezoidal hole base diameter is slightly larger than described trapezoidal hole top diameter.
The present invention also provides a kind of combination of above-mentioned Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block, and the combination of described test block is a set of test block, comprises multiple test block, is divided into 3 groups by the shape of upper surface: set of planes, sphere group and face of cylinder group; Wherein set of planes is at least 2 plane test blocks, and sphere group is 1 Spherical Test block, and face of cylinder group is 1 face of cylinder test block; During use, test block is used alone wherein any one test block or multiple test block combination in any;
Described at least 2 plane test blocks, wherein the right cylinder inside of at least one plane test block has a trapezoidal hole (i.e. the first plane test block), and the right cylinder inside of at least one plane test block is provided with first, second upper and lower two trapezoidal hole (i.e. the second plane test block).Concrete quantity is selected according to actual needs.
The present invention also provides a kind of application of above-mentioned Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block, refers to: described test block is used for the Non-Destructive Testing of Low Voltage Electrical Apparatus electrical contact;
When utilizing Ultrasonic Nondestructive equipment to detect, target detection face is the plane at the circle place, top of the inner trapezoidal hole of test block;
During detection, total area of detection equals the area of the upper surface of test block Part I the first half right cylinder or rectangular parallelepiped, and the area of the top circle of the defect area of the testing result inner trapezoidal hole that is test block, theory calculate ratio of brazing area is: the area of detection of (area of total area of detection-trapezoidal hole top circle)/total; Meanwhile, trapezoidal hole can eliminate the edge effect of Ultrasonic NDT;
Compared with the ratio of brazing area obtain theoretical value and detection, complete the demarcation to probe;
When combinationally using, obtain many group theoretical values and actual detected value, by analysis theories value and actual detected value, the linear properties of checkout equipment can be obtained.
Owing to have employed technique scheme, the invention has the beneficial effects as follows:
Non-Destructive Testing test block of the present invention, both can a whole set ofly use, also can be used alone wherein any one test block or its combination in any, ultrasound scanning can be coordinated, corresponding ratio of brazing area can be obtained after each test block of scanning, complete the demarcation of probe and the work to aspects such as the performance test of checkout equipment and the adjustment of sensitivity.The present invention is simple, and easy to use, the test block specified in alternative multiple standards, increases work efficiency, and has highly application value.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of the assembly of the present invention's set of planes test block;
Fig. 2 is test block ring structure schematic diagram of the present invention;
Fig. 3 is the understructure schematic diagram of test block of the present invention;
Fig. 4 (a)-Fig. 4 (g) is the cut-open view of set of planes 1#-7# test block Part I of the present invention;
Fig. 5 is the cut-open view of set of planes 8# test block Part I of the present invention;
Fig. 6 (a), Fig. 6 (b) are sphere group 9# test block Part I cut-open view of the present invention and axonometric drawing;
Fig. 7 (a), Fig. 7 (b) are cylinder cells 10# test block Part I cut-open view of the present invention and axonometric drawing;
In figure: convex right cylinder or convex rectangular parallelepiped 1, annular seal parts 2, gland bonnet 3, trapezoidal hole 4, the upper surface 5 of convex parts, the top 6 of trapezoidal hole and bottom 7, first trapezoidal hole 8 of trapezoidal hole and the second trapezoidal hole 9.
Embodiment
Be further described technical scheme of the present invention below, the following description is only the use understanding technical solution of the present invention, and be not used in and limit scope of the present invention, protection scope of the present invention is as the criterion with claims.
As shown in Fig. 1-Fig. 7, a kind of combination of low-voltage electrical apparatus electrical contact Ultrasonic Nondestructive test block, comprise a set of totally 10 test blocks, different according to the shape of test block upper surface, be divided into plane, sphere and 3 groups, the face of cylinder, wherein set of planes is 8 plane test blocks, and sphere group is 1 Spherical Test block, and face of cylinder group is 1 face of cylinder test block.
8 plane test blocks of set of planes are divided into two classes according to the difference of inner structure again, and the 1st class is 1# test block, 2# test block, 3# test block, 4# test block, 5# test block, 6# test block, 7# test block; 2nd class is 8# test block.Sphere group is 9# test block.Face of cylinder group is 10# test block.The constraint that this cover test block is not determined in position, can use a whole set of 10 test blocks as test block, also can be used alone wherein any one or more combinations during use.Add man-hour, each test block can be processed separately.
Each test block is made up of three parts: 1#, 2#, 3#, 4#, 5#, 6#, 7#, 8# test block Part I convex parts, two parts up and down of convex are all right cylinders, 9# tests Part I convex parts, convex top is divided into right cylinder (right cylinder upper surface 5 is sphere), and bottom is divided into right cylinder; 10# test block Part I convex parts, the upper part of convex is class square, and lower part is rectangular parallelepiped; Part II is annular seal parts 2 (as circular ring shaped rubber sealing gasket), and Part III is gland bonnet 3 (as circular seal lid).Described annular seal parts 2 are arranged on described convex feature bottom, and described gland bonnet 3 is arranged on described convex parts 2 top, and described annular seal parts 2 are between described convex parts, described gland bonnet 3; Described convex components interior is equipped with trapezoidal hole 4 (vertical sectional shape in hole).
Below the structure of each test block above-mentioned is described in detail by way of example:
As shown in Figure 1, for the wiring layout of the plane test block in one embodiment of the invention, namely above-mentioned set of planes test block 1#, 2#, 3#, 4#, 5#, 6#, 7#, each test block is made up of three parts, Part I is convex right cylinder 1 (convex parts), Part II is annular seal parts 2, and Part III is circular seal lid 3.Part I convex right cylinder 1 bottom surface of described test block is provided with toroidal cavity, and is provided with threaded hole; Described annular seal parts 2 are arranged in described toroidal cavity; Described circular seal lid 3 is provided with threaded hole, and the corresponding threaded holes bottom described threaded hole and described convex right cylinder 1 closes; By screw, described three partial fixings are integrated.
As Fig. 4 (a) is depicted as the cut-open view of 1# test block Part I.The diameter of convex right cylinder upper surface 5 is 50mm; Inside is provided with trapezoidal hole 4, described trapezoidal hole 4 and right cylinder coaxial; The top 6 of described trapezoidal hole 4 is 1.5mm to the distance of cylindrical upper surface 5; Trapezoidal hole top 6 diameter of a circle is 15mm, and bottom 7 diameter of a circle is 17mm; As calculated, the area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 15
2/ 50
2=0.09, namely 9%.
As Fig. 4 (b) is depicted as the cut-open view of 2# test block Part I.The diameter of convex right cylinder upper surface 5 is 50mm; Inside is provided with trapezoidal hole 4, described trapezoidal hole 4 and right cylinder coaxial; The top 6 of described trapezoidal hole is 1.5mm to the distance of cylindrical upper surface 5; Trapezoidal hole top 6 diameter of a circle is 20mm, and bottom 7 diameter of a circle is 22mm; As calculated, the area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 20
2/ 50
2=0.16, namely 16%.
As Fig. 4 (c) is depicted as the cut-open view of 3# test block Part I.The diameter of convex right cylinder upper surface 5 is 50mm; Inside is provided with trapezoidal hole 4, described trapezoidal hole 4 and right cylinder coaxial; The top 66 of described trapezoidal hole is 1.5mm to the distance of cylindrical upper surface 5; The diameter of trapezoidal hole top circle 6 is 25mm, and the diameter of bottom circle 7 is 27mm; As calculated, the area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 25
2/ 50
2=0.25, namely 25%.
As Fig. 4 (d) is depicted as the cut-open view of 4# test block Part I.The diameter of convex right cylinder upper surface 5 is 50mm; Inside is provided with trapezoidal hole 4, described trapezoidal 4 holes and right cylinder coaxial; The top 6 of described trapezoidal hole is 1.5mm to the distance of cylindrical upper surface 5; Trapezoidal hole top 6 diameter of a circle is 30mm, and the diameter of bottom circle 6 is 32mm; As calculated, the area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 30
2/ 50
2=0.36, namely 36%.
As Fig. 4 (e) is depicted as the cut-open view of 5# test block Part I.The diameter of convex right cylinder upper surface 5 is 50mm; Inside is provided with trapezoidal hole 4, described trapezoidal hole 4 and right cylinder coaxial; The top 6 of described trapezoidal hole is 1.5mm to the distance of cylindrical upper surface 5; Trapezoidal hole top 6 diameter of a circle is 35mm, and bottom 7 diameter of a circle is 37mm; As calculated, the area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 35
2/ 50
2=0.49, namely 49%.
As Fig. 4 (f) is depicted as the cut-open view of 6# test block Part I.The diameter of convex right cylinder upper surface 5 is 50mm; Inside is provided with trapezoidal hole 4, described trapezoidal hole 4 and right cylinder coaxial; The top 6 of described trapezoidal hole is 1.5mm to the distance of cylindrical upper surface 5; Trapezoidal hole top 6 diameter of a circle is 40mm, and bottom 7 diameter of a circle is 42mm; As calculated, the area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 40
2/ 50
2=0.64, namely 64%.
As Fig. 4 (g) is depicted as the cut-open view of 7# test block Part I.The diameter of convex right cylinder upper surface 5 is 50mm; Inside is provided with trapezoidal hole 4, described trapezoidal hole 4 and right cylinder coaxial; The top 6 of described trapezoidal hole is 1.5mm to the distance of cylindrical upper surface 5; Trapezoidal hole top 6 diameter of a circle is 45mm, and bottom 7 diameter of a circle is 47mm; As calculated, the area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 45
2/ 50
2=0.81, namely 81%.
Be illustrated in figure 5 the wiring layout for the plane test block in one embodiment of the invention, i.e. the cut-open view of set of planes 8# test block Part I.The cylindrical diameter of 8# test block upper part is 50mm; Inside is provided with the first trapezoidal hole 8, second trapezoidal hole 9, upper and lower 2 trapezoidal holes, described trapezoidal hole and right cylinder coaxial; The top of described first trapezoidal hole 8 is 2mm to the distance of cylindrical upper surface 5; Described first trapezoidal hole 8 top diameter of a circle is 20mm, and bottom diameter of a circle is 45mm; Described second trapezoidal hole 9 top diameter of a circle is 45mm, and bottom diameter of a circle is 47mm.
The cut-open view that Fig. 6 (a), Fig. 6 (b) are the sphere group 9# test block Part I in one embodiment of the invention and axonometric drawing; Described 9# test block Part I is convex parts, and the first half and the latter half of described convex are right cylinder; Described convex upper part upper surface 5 is sphere, and described spherical radius is 150mm; Inside is provided with trapezoidal hole 4, and described trapezoidal hole 4 is coaxial with right cylinder; End face 6 center and the sphere 5 of trapezoidal hole have a distance, and this distance is 2mm; Described trapezoidal hole top 6 diameter of a circle is 45mm, and bottom described trapezoidal hole, 7 diameter of a circles are 47mm.
The cut-open view that Fig. 7 (a), Fig. 7 (b) are the cylinder cells 10# test block Part I in one embodiment of the invention and axonometric drawing; Described 10# test block Part I is convex parts, and the first half of described convex is class rectangular parallelepiped, and the latter half is rectangular parallelepiped; The upper surface 5 of described class rectangular parallelepiped is the face of cylinder, and face of cylinder radius is 150mm, and it is projected as square; 10# test block inside is provided with trapezoidal hole 4, and the center of described trapezoidal hole 4 is centers of described class rectangular parallelepiped; The center of circle of top 6 circle of described trapezoidal hole is 2mm to the distance on the described face of cylinder; Described trapezoidal hole top 6 diameter of a circle is 40mm, and bottom described trapezoidal hole, 7 diameter of a circles are 42mm.
In an application example, utilize the 1# test block in Ultrasonic Nondestructive equipment Inspection test block combination of the present invention.Define the area that total area of detection is the cylindrical upper surface 5 of upper part of 1# test block Part I, the area of top 6 circle of the inner trapezoidal hole of 1# test block orientates defect area as, and detecting the ratio of brazing area obtained is 91%, and non-ratio of brazing area is 9%.The area ratio of the area of described trapezoidal hole top 6 circle and the cylindrical upper surface 5 of upper part of described 1# test block Part I is 15
2/ 50
2=0.09, namely 9%.
In like manner, the use principle that 2# ~ 7# test block is single is identical with 1# test block.
Combination also, when repeatedly using 1# ~ 7# test block, according to the difference between the actual verification and measurement ratio that the theoretical ratio of brazing area calculated and detection obtain, can complete the performance test of checkout equipment as linearly tested.
Set of planes 8# test block is as the test block demarcating inclined-plane, can use as test block when ultrasonic detecting equipment detects inclined-plane workpiece.
Sphere group 9# test block is as the test block demarcating sphere, can use as test block when ultrasonic detecting equipment detects spherical workpiece.
Sphere group 10# test block is as the test block demarcating the face of cylinder, can use as test block when ultrasonic detecting equipment detects spherical workpiece.
In another embodiment, also two plane test blocks, a Spherical Test block can only be adopted, the combination of a cylinder cells test block, plane test block is as the test block demarcating inclined-plane, can use as test block when ultrasonic detecting equipment detects inclined-plane workpiece.Spherical Test block is as the test block demarcating sphere, can use as test block when ultrasonic detecting equipment detects spherical workpiece.Spherical Test block is as the test block demarcating the face of cylinder, can use as test block when ultrasonic detecting equipment detects spherical workpiece.
The present invention can coordinate ultrasound scanning, completes the demarcation of ultrasonic probe and detection system; Detection system can be used to detect test block of the present invention, directly obtain corresponding ratio of brazing area, and when can use multiple test block, the performance test of completion system, can as the test block of the workpiece of the special shapes such as inclined-plane workpiece, spherical workpiece, face of cylinder workpiece simultaneously.The present invention is simple, be easy to get, and the test block specified in alternative multiple standards, increases work efficiency, and has highly application value.
The concrete size of each test block in above-described embodiment, the number of combination and the type of test block etc. just the present invention are used for illustrating; be not intended to limit the present invention protection domain; each test block of the present invention also can be other dimensional parameters, combination; all do not affect essence of the present invention, this is be very easy to realize to those skilled in the art.
Although content of the present invention has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple amendment of the present invention and substitute will be all apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block, is characterized in that: described test block is made up of three parts: Part I is convex parts, and Part II is annular seal parts, and Part III is gland bonnet; Described annular seal parts are arranged on described convex feature bottom, and described circular seal lid is arranged on described convex component top, and described annular seal parts are between described convex parts, described gland bonnet; Described convex parts refer to overall in convex structure, and two parts up and down of convex are all right cylinder or rectangular parallelepiped; Described convex components interior is equipped with trapezoidal hole.
2. Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block according to claim 1, is characterized in that: the described right cylinder of convex parts or the bottom of rectangular parallelepiped are provided with toroidal cavity, and are provided with threaded hole; Described circular ring shaped rubber sealing gasket is arranged in described toroidal cavity; Described gland bonnet is provided with threaded hole, and the corresponding threaded holes bottom described threaded hole and described convex right cylinder or rectangular parallelepiped closes, thus is integrated by described three partial fixings by screw.
3. Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block according to claim 1, it is characterized in that: described test block, two parts up and down of its convex parts are right cylinder, and right cylinder upper surface is plane, inside is provided with trapezoidal hole, and this kind of structured testing block is called plane test block.
4. Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block according to claim 3, is characterized in that: described plane test block is divided into two kinds, during use optional one or both:
The first: plane test block, its right cylinder inside has a trapezoidal hole, and trapezoidal hole and exterior cylindrical coaxial; Described trapezoidal hole is blind hole, and the cylindrical upper surface of distance from top of described trapezoidal hole has a thickness; The described trapezoidal hole base diameter of described test block is larger than described trapezoidal hole top diameter;
The second: plane test block, its right cylinder inside is provided with first, second upper and lower two trapezoidal holes; Described second trapezoidal hole is positioned at described first trapezoidal lower position; The top of described second trapezoidal hole is the bottom of described first trapezoidal hole; There is a thickness at the top of described first trapezoidal hole to right cylinder upper surface, and described first trapezoidal hole base diameter is larger than described first trapezoidal hole top diameter; The base diameter of described second trapezoidal hole is greater than the top diameter of described second trapezoidal hole.
5. Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block according to claim 1, it is characterized in that: described test block, two parts up and down of its convex parts are right cylinder, and the cylindrical upper surface of described the first half is sphere; This kind of structured testing block is called Spherical Test block.
6. Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block according to claim 5, it is characterized in that: described Spherical Test block, its right cylinder inside is provided with a trapezoidal hole, and described trapezoidal hole is coaxial with described right cylinder; There is a thickness in the center of circle, top of the inner trapezoidal hole of described test block to described sphere; Described test block trapezoidal hole base diameter is greater than described trapezoidal hole top diameter.
7. Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block according to claim 1, is characterized in that: described test block, and the first half of its convex parts is class rectangular parallelepiped, and the latter half is rectangular parallelepiped; Described class rectangular parallelepiped refers to that the upper surface of rectangular parallelepiped is the face of cylinder, and it is projected as square; This kind of structured testing block is called face of cylinder test block.
8. Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block according to claim 7, it is characterized in that: test block inside, the described face of cylinder is provided with a trapezoidal hole, the center of described trapezoidal hole is the center of described class rectangular parallelepiped; There is a thickness in the center of circle, top of the inner trapezoidal hole of described test block to the described face of cylinder; Described test block trapezoidal hole base diameter is slightly larger than described trapezoidal hole top diameter.
9. the combination of the Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block described in an any one of the claims 1-8, it is characterized in that: the combination of described test block is a set of test block, comprise multiple test block, be divided into 3 groups by the shape of upper surface: set of planes, sphere group and face of cylinder group; Wherein set of planes is at least 2 plane test blocks, and sphere group is 1 Spherical Test block, and face of cylinder group is 1 face of cylinder test block; During use, test block is used alone wherein any one test block or multiple test block combination in any;
Described at least 2 plane test blocks, wherein the right cylinder inside of at least one plane test block has a trapezoidal hole, and the right cylinder inside of at least one plane test block is provided with first, second upper and lower two trapezoidal holes.
10. an application for the Low Voltage Electrical Apparatus electrical contact Non-Destructive Testing test block described in any one of the claims 1-8, is characterized in that: described test block is used in the Non-Destructive Testing of Low Voltage Electrical Apparatus electrical contact;
When utilizing Ultrasonic Nondestructive equipment to detect, target detection face is the plane at the circle place, top of the inner trapezoidal hole of test block;
During detection, total area of detection equals the area of the upper surface of test block Part I the first half right cylinder or rectangular parallelepiped, and the area of the top circle of the defect area of the testing result inner trapezoidal hole that is test block, theory calculate ratio of brazing area is: the area of detection of (area of total area of detection-trapezoidal hole top circle)/total; Meanwhile, trapezoidal hole can eliminate the edge effect of Ultrasonic NDT;
Compared with the ratio of brazing area obtain theoretical value and detection, complete the demarcation to probe;
When combinationally using, obtain many group theoretical values and actual detected value, by analysis theories value and actual detected value, the linear properties of checkout equipment can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035860.8A CN105548371B (en) | 2016-01-20 | 2016-01-20 | Low-voltage electrical apparatus electrical contact Ultrasonic Nondestructive test block and combinations thereof and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610035860.8A CN105548371B (en) | 2016-01-20 | 2016-01-20 | Low-voltage electrical apparatus electrical contact Ultrasonic Nondestructive test block and combinations thereof and application |
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| Publication Number | Publication Date |
|---|---|
| CN105548371A true CN105548371A (en) | 2016-05-04 |
| CN105548371B CN105548371B (en) | 2019-03-08 |
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| CN201610035860.8A Active CN105548371B (en) | 2016-01-20 | 2016-01-20 | Low-voltage electrical apparatus electrical contact Ultrasonic Nondestructive test block and combinations thereof and application |
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