CN106441179A - Electromagnetic ultrasonic transducer for measuring thickness of globular graphite cast tube - Google Patents
Electromagnetic ultrasonic transducer for measuring thickness of globular graphite cast tube Download PDFInfo
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- CN106441179A CN106441179A CN201611078109.2A CN201611078109A CN106441179A CN 106441179 A CN106441179 A CN 106441179A CN 201611078109 A CN201611078109 A CN 201611078109A CN 106441179 A CN106441179 A CN 106441179A
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- transducer body
- transducer
- solenoid
- iron pipe
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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
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
- G01B17/02—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations for measuring thickness
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- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
Abstract
The invention discloses an electromagnetic ultrasonic transducer for measuring thickness of a globular graphite cast tube. The electromagnetic ultrasonic transducer comprises a transducer main body and a handle, wherein one end of the handle is fixed on the transducer main body through a bolt; the transducer main body comprises a coil component and a cable locking joint; the cable locking joint is pressed on the coil component and is fixed on the transducer main body through the bolt; a cable component is fixed at the cable locking joint; and the cable component penetrates through the interior of the handle and exceeds the handle. According to the invention, a solenoid coil is in the manner of enameled wire winding, the volume is small and the signal is more sensitive and practical; an idler wheel is arranged on the transducer main body, so that the transducer is convenient to move on the cast tube with a rough surface; a soft magnetic conductive magnet is in contact with the solenoid coil, so that the magnetic conductivity can be increased, the eddy current loss of the coil can be reduced and the signal sensitivity can be promoted; and the electromagnetic ultrasonic transducer has the advantages of simple design and structure, convenience in operation, no pollution, no harm to the human body, low running cost, no resource waste and capability of running at high temperature.
Description
Technical field
The present invention relates to electromagnet ultrasonic changer apparatus field, specially a kind of electromagnetic acoustic for ductile iron pipe thickness measuring
Transducer.
Background technology
Spheroidal graphite cast-iron is a kind of higher cast iron materials of the intensity for growing up the 1950's, be by nodularization and pregnant
Educate process and globular graphite material is obtained, with very high mechanical performance, its combination property is very close to steel；By spheroidal graphite cast-iron iron liquid
Pour in the pipe die of centrifuge, the pipe that casts through running up is referred to as centrifugal ductile cast iron pipes, abbreviation ductile iron pipe；Ductile iron pipe
The features such as with high intensity, corrosion-resistant, good toughness, long service life, its comprehensive advantage is not available for other tubing；Cause
This, ductile iron pipe is at home and abroad widely used in recent years.But the water-cooled production technology of ductile iron pipe determines that its wall thickness can not
Visibly homogeneous.
Electromagnet ultrasonic changer is a kind of new technology, be characterized in noncontact, without the need for coupling, material surface requirement
The unique advantage such as low, safe and reliable, convenient and become cast tube room temperature, high temperature, online, one kind of off-line type Thickness sensitivity is preferable
Technical scheme.
The measurement of wall thickness at present is mainly the thickness of man-hour manually hand-held miking tube end in produce reality, these
The method speed of traditional wall-thickness measurement is slow, and the amount of labour is big, waste of materials oneself through not adapting to the needs of modern production, measurement
Precision cannot also ensure.
It is with piezoelectric supersonic thickness measuring mode to have one kind, uses piezoelectric ultrasonic transducer, and piezoelectric transducer is using connecing
Touch measurement detected surface is had high demands, easily disturbed by debris such as noise, electromagnetism, measured object scale on surface, cause to increase
Error, and due to spheroidal graphite cast-iron rough surface, be one layer of raised bead, very coarse, while intensity is high, material have than
More serious anisotropy, traditional piezoelectric supersonic is coated couplant after having to pass through polishing before detection and can just be detected,
Whens more than 100 degree of high temperature, it is difficult to do thickness measuring with piezoelectric probe, high-temperature coupling agent is not only expensive but also result is unstable
Determine and be only capable of inspecting a small amount of cast tube by random samples, and lot of pure water when thickness measurement online, is needed, cause water resource waste.
Another kind is to use X-ray ga(u)ging, a kind of ductile iron pipe X-ray that such as Patent No. 201620195318.4 is mentioned
Wall Thickness Testing Device, it is using X-ray R-T unit, carries out thickness measure to ductile iron pipe, but adopts X-ray tube, right
Flaw detection personnel have ionizing radiation to injure, and also have pollution to environment, and a lot of industries are all detected using ray in restriction, and X-ray
System complex, strongly professional, it is necessary to just to operate with through strict training, X-ray emission and reception device price in addition
Costliness, is unfavorable for cost-effective.
Content of the invention
It is an object of the invention to provide a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring, it effectively can solve
Certainly problem present in background technology.
For achieving the above object, the present invention provides following technical scheme：A kind of electromagnetic acoustic for ductile iron pipe thickness measuring
Transducer, it is characterised in that include：Transducer body (1) and handle (2), the one end of handle (2) is fixed by screws in
On transducer body (1)；Described transducer body (1) includes coil block (3), cable locking joint (4), the cable locking
Joint (4) is pressed on coil block (3), and is fixed by screws on transducer body (1)；Cable locking joint (4)
Place is fixed with cable assembly (6), and cable assembly (6) is passed through from the inside of handle (2) and exceeds handle (2).
Further, described transducer body (1) also include roll wheel assembly (5), described roll wheel assembly (5) include roller (7)
With roller shaft (8), described roller (7) go here and there on roller shaft (8), roll wheel assembly (5) be placed in transducer body (1) just under
Side.
Preferably, inside described handle (2) is hollow structure.
Further, described coil block (3) including solenoid (9), magnetic conduction soft magnetic bodies (10), permanent magnet (11), coil
Skeleton (12), nonmetallic wear-resistant protection set (13), solenoid (9) are placed in coil rack (12) bottom, and the two passes through
Glue is bonded；Magnetic conduction soft magnetic bodies (10) are placed on solenoid (9), and the two is bonded by glue；The permanent magnet
(11) it is placed on magnetic conduction soft magnetic bodies (10), and permanent magnet (11) is placed on the inner chamber size line supporting with permanent magnet (11) size
In ring framework (12)；Coil rack (12) are placed on nonmetallic wear-resistant protection set (13)；The nonmetallic wear-resistant protection set
(13) it is fixed by screws on transducer body (1).
Preferably, quantity described roll wheel assembly (5) is 2, to be respectively placed in transducer body (1) bottom front and back position.
Preferably, in described roll wheel assembly (5) embedded transducer body (1), and the bottom surface of roller (7) and transducer body
(1) vertical interval A of bottom surface is between (0.3～0.5) mm.
Preferably, described solenoid (9) formed by enamel-covered wire coiling, its number of turn be (10～30) circle, enamel-covered wire line footpath
Between (0.1～0.3) mm.
Preferably, working inductance amount described solenoid (9) is between (3.0～18.0) uH, and working direct current impedance exists
Between (0.8～3.5) Ω, operating frequency is between (1.0～5.0) MHZ.
Preferably, base plane described coil rack (12) is vertical with the upper plane of nonmetallic wear-resistant protection set (13)
Spacing B is between (0.5～1.0) mm, and the material of coil rack (12) can be synthetic resin material, nonmetallic wear-resisting guarantor
The non-metallic material of sheath (13) can be ceramic-like material or synthetic resin material.
Preferably, end thereof contacts permanent magnet (11) described cable assembly (6).
Compared with prior art, the invention has the beneficial effects as follows：
1. this is used for the solenoid of the electromagnet ultrasonic changer of ductile iron pipe thickness measuring using enamel-covered wire winding method, sensitive
Degree is printed mode with respect to solenoid using PCB and can be enhanced about more than once, and in the case of sensitivity height is ensured, can be
It is less that contour structures do, and on the other hand, the excitation of solenoid and receiving portion adopt integral structure, greatly simplify transducing
Device structure, reduces cable link, saves cost of manufacture, and DC impedance is little, and loss is low, is more easy to be suitable for pumping signal repetition frequency
The fast on-line checking of rate；
2. transducer body installs roller, and this roller can be moved on shaggy cast tube so that very comfortable is convenient, just
In realizing, cast tube is whole to be measured；
3. using magnetic conduction soft magnetic bodies, solenoid is contacted, you can to improve magnetic conductivity, the vortex that can reduce coil again is damaged
Consumption, improves signal sensitivity, and sensitivity at least improves more than 1 times with respect to the transducer of the structure without soft magnetism；
4. with respect to X-ray Wall Thickness Testing Device, the present invention adopts electromagnet ultrasonic changer, and design structure is simple, operation side
Just, pollution-free, human body is not injured, operating cost is low；
5., with respect to piezoelectric supersonic thickness measuring transducer, the present invention adopts electromagnet ultrasonic changer, without the need for couplant, it is not necessary to
Pure water, will not make the wasting of resources, that is, it is also not in problem to be used in more than 400 degree thickness measurings.
Description of the drawings
Fig. 1 is the axonometric chart of the present invention；
Fig. 2 is the sectional view of the present invention；
Fig. 3 is the partial sectional view of the present invention；
Fig. 4 is the partial schematic diagram of the present invention；
In reference：1- transducer body；2- handle；3- coil block；4- cable locking joint；5- roll wheel assembly；
6- cable assembly；7- roller；8- roller shaft；9- solenoid；10- magnetic conduction soft magnetic bodies；11- permanent magnet；12- coil rack；13-
Nonmetallic wear-resistant protection set.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is all other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1, Fig. 2, Fig. 3 and Fig. 4 is referred to, the present invention provides a kind of technical scheme：A kind of for ductile iron pipe thickness measuring
Electromagnet ultrasonic changer, including transducer body 1 and handle 2, one end of handle 2 is fixed by screws on transducer body 1,
And the inside of preferred handle 2 is hollow structure；Wherein, transducer body 1 includes coil block 3, cable locking joint 4, rolling
Wheel assembly 5, cable locking joint 4 is pressed on coil block 3, and is fixed by screws on transducer body 1, and cable lock is immediately
Cable assembly 6 is fixed with 4, and cable assembly 6 is passed through from the inside of handle 2 and exceeds handle 2；In addition, roll wheel assembly 5 is wrapped
Roller 7 and roller shaft 8 is included, roller 7 is gone here and there on roller shaft 8, roll wheel assembly 5 is placed in the underface of transducer body 1, and preferably
The quantity of roll wheel assembly 5 is 2, is respectively placed in 1 bottom front and back position of transducer body, and preferred roll wheel assembly 5 is embedded in and changes
Can be in device main body 1, and vertical interval A of the bottom surface of roller 7 and the bottom surface of transducer body 1 is between (0.3-0.5) mm；Another
Aspect, coil block 3 includes solenoid 9, magnetic conduction soft magnetic bodies 10, permanent magnet 11, coil rack 12, nonmetallic wear-resistant protection set
13, wherein, solenoid 9 is placed in 12 bottom of coil rack, and the two is bonded by glue, and preferred solenoid 9 is by painting
Envelope curve coiling is formed, and preferably its number of turn be (10～30) circle, enamel-covered wire line footpath between (0.1～0.3) mm, and preferably
The working inductance amount of solenoid 9 is between (3.0～18.0) uH, and working direct current impedance is worked between (0.8～3.5) Ω
Frequency is between (1.0～5.0) MHZ, and magnetic conduction soft magnetic bodies 10 are placed on solenoid 9, and the two is bonded by glue, permanent magnetism
Body 11 is placed on magnetic conduction soft magnetic bodies 10, and is placed in the inner chamber size coil rack 12 supporting with 11 size of permanent magnet, and
The end thereof contacts permanent magnet 11 of preferred cable assembly 6, coil rack 12 is placed on nonmetallic wear-resistant protection set 13, and preferably
Vertical interval B of the upper plane of the base plane of coil rack 12 and nonmetallic wear-resistant protection set 13 between (0.5-1.0) mm,
And the material of preferred coil rack 12 can be synthetic resin material, and preferably nonmetallic wear-resistant protection covers 13 non-gold
Category material can be ceramic-like material or synthetic resin material, and nonmetallic wear-resistant protection set 13 is fixed by screws in transducer
In main body 1.
Fig. 1 is referred to, handle 2 is for being similar to cylindrical-shaped structure, and used as a preferred scheme, it can pass through at least two
The screw of M4 model or other models is fixed on transducer body 1, in addition, as another preferred scheme, handle 2
Internal is hollow structure, and one end of cable assembly 6 can be connected to inside transducer body 1, the other end the inside from handle 2
Go through outside, the length of cable assembly 6 can change according to the length in real work；On the other hand, in the side of Fig. 1
Can see except the installing hole of roller shaft 8, be also left several holes, used as a preferred scheme, this some holes is to keep for
Transducer body 1 installs shell, as a preferred scheme, can be installed with the screw of M3 model, and installing shell is
In order to protect roller shaft 8 and roller 7 injury-free.
Fig. 2 is referred to, Fig. 1 is contrasted, this part is the sectional view of the entirety of the present invention, and one end of wherein cable assembly 6 is
The inside of transducer body 1 is fixed on by cable locking joint 4, makes this end thereof contacts permanent magnet 11 of cable assembly 6, and cable
Lock-on connection 4 is fixed by screws on transducer body 1, and whole coil block 3 is placed in the inside of transducer body 1, as
One preferred scheme, except that block position of coil block 3 is hollow inside transducer body 1, be elsewhere solid,
Can ensure that coil block 3 inside the transducer body 1 will not double swerve, affect the stability of equipment, in addition, transducer master
Body 1 is also supporting with coil block 3 in height, just coincide；On the other hand, roll wheel assembly 5 is to be built in transducer body 1
In bottom, similar to the structure of the wheel of the drum vehicle on urban construction field Zhong Ya road surface in prior art, each one in front and back,
Can ensure that the contact area with the maximum on ground, in real work, can on cast tube easy motion, the bottom surface of roller 7 with
Vertical interval A of the bottom surface of transducer body 1 between (0.3-0.5) mm, reserve this distance, in actual process, this away from
With a distance from for lift-off, can be with non-contact detection, the distance too little abrasion that can increase probe, distance increases can cause signal to drop
Low, so being highly preferred embodiment of the present invention between (0.3-0.5) mm.
Fig. 3 is referred to, it is the sectional view of the coil block 3 of the present invention, whole coil block 3 includes solenoid 9, leads
Magnetic soft magnetic bodies 10, permanent magnet 11, coil rack 12, nonmetallic wear-resistant protection set 13, as a preferred scheme, from top to bottom
The arrangement of each part is permanent magnet 11, magnetic conduction soft magnetic bodies 10, solenoid 9, coil rack 12, nonmetallic wear-resistant protection set 13,
Wherein, permanent magnet 11, magnetic conduction soft magnetic bodies 10, solenoid 9 are placed in coil rack 12；Solenoid 9 using enamel-covered wire around
Mode processed, prints mode compared with using PCB, and its sensitivity can be enhanced about more than once, and this mode can allow electromagnetic wire
The excitation of circle 9 and receiving portion adopt integral structure, greatly simplify transducer architecture, make profile more compact portable, and
The coiling number of turn of the solenoid 9 that the present invention is adopted is (10～30) circle, and enamel-covered wire line footpath is allowed straight between (0.1～0.3) mm
Flow impedance is little, and loss is low, is more easy to be suitable for the fast on-line checking of pumping signal repetition rate；Magnetic conduction soft magnetic bodies 10 and solenoid 9
Between be bonded together with glue, so design can improve magnetic conductivity, the eddy-current loss of coil can be reduced again, carried
High RST sensitivity；Permanent magnet 11 can be converted into Lorentz force electric current, provide deviation magnetic field；Coil rack 12 is used for protecting
Permanent magnet 11, magnetic conduction soft magnetic bodies 10, solenoid 9 are injury-free, and coil rack 12 is placed on nonmetallic wear-resistant protection set 13,
And they have the difference in height of (0.5～1.0) mm, it may ensure that heat-insulated, reduce conduction of heat, in addition in signal transmission
Aspect, this difference in height is bigger, and signal can be decayed, and 1.0mm contrast 0.5mm signal can decay 1 times, and this is substantially proportional relation,
Too little not having is thermally isolated effect, and too big impact signal fading badly, nonsensical, used as the enforcement that the present invention is optimal
Example, the best results as B=0.5mm, additionally as a preferred scheme of the present invention, the material of coil rack 12 can be
Synthetic resin material, it does not have the sharp keen of metal, but but has larger intensity, wear-resisting, and can play insulated heat
Effect；Nonmetallic wear-resistant protection set 13 can play a part of insulated heat with non-metallic material, and as the present invention is excellent
The scheme of choosing, non-metallic material can be ceramic-like material or synthetic resin material, and they all have wear-resisting characteristic.
Fig. 4 is made similar to track elements for the schematic diagram of the solenoid 9 of the present invention, solenoid 9, and one encloses,
Each coil can be an independent passage, and solenoid 9 can produce magnetic field by electricity, form sensing whirlpool in metal surface
Stream, is vortexed under the bias magnetic field effect of permanent magnet 11, forms Lorentz force, then produce ultrasound examination.
In real work：
Due to cast tube caliber difference, corresponding pipe thickness is different, grain size difference, thin pipe wall crystal grain in casting
Little, ultrasonic signal is decayed little, as a preferred embodiment of the present invention, surpassing for high frequency (3～5) MHZ can be selected
Sound wave；It is generally used for cast tube of the wall thickness less than below 10mm, and more than the 10mm of thick tube wall, as the present invention is excellent
The embodiment of choosing, frequency can select (1～3) MHZ, thicker cast tube, and crystal grain is thicker, needs to use lower frequency, and
If frequency is too low, cause thickness and precision and resolution low, as a preferred embodiment of the present invention, select minimum 1MHZ
Can meet detection more than 20mm cast tube.
Solenoid 9 is in high frequency, and AC impedance is big, its impedance and inductance value relational expression, z=ω * L, (ω=2 π * f)
Wherein, f is ultrasonic signal frequencies, and L is coil inductance, and z is impedance.
In the case that driving source is certain, impedance is bigger, and exciting power is less, excites time ultrasonic energy less,
Impedance is too little, can damage driving source again.Under comprehensive condition, high frequency selects the little solenoid 9 of inductance value, selects electricity during low frequency
The big solenoid 9 of sensibility reciprocal.
On the number of turn is selected, the inductance value size of solenoid 9 and number of turn N square of solenoid 9 are directly proportional, and N is bigger,
Inductance value is bigger, coordinates this contradictory relation, as a preferred embodiment of the present invention, is finally set to and in operating frequency is
During (1.0～5.0) MHZ, corresponding working inductance amount, can be according to selecting according to practical situation between (3.0～18.0) uH
Suitable frequency and the number of turn of solenoid 9.
The DC impedance of solenoid 9 have impact on the heat condition of solenoid 9, can burn out and change in the case that heating is serious
Can device main body 1；The diameter of wire of coiling solenoid 9 is increased, DC impedance can be reduced, but the area of solenoid 9 is to increase,
Be not suitable for the miniaturization of transducer, consider, as a preferred embodiment of the present invention, be selected in line footpath (0.1～
0.3) the enamel-covered wire coiling between mm.
This is used for the solenoid of the electromagnet ultrasonic changer of ductile iron pipe thickness measuring using enamel-covered wire winding method, sensitivity
Mode is printed with respect to solenoid using PCB to be enhanced about more than once, and in the case of sensitivity height is ensured, can be outer
It is less that shape structure is done, and on the other hand, the excitation of solenoid and receiving portion adopt integral structure, greatly simplify transducer
Structure, reduces cable link, saves cost of manufacture, and DC impedance is little, and loss is low, is more easy to be suitable for pumping signal repetition rate
Fast on-line checking；Transducer body installs roller, and this roller can be moved on shaggy cast tube so that very comfortable is convenient,
Facilitate implementation the whole measurement of cast tube；Solenoid is contacted using magnetic conduction soft magnetic bodies, you can so that magnetic conductivity is improved, line can be reduced again
The eddy-current loss of circle, improves signal sensitivity, sensitivity improve with respect to the transducer of the structure without soft magnetism, at least 1 times with
On；With respect to X-ray Wall Thickness Testing Device, the present invention adopts electromagnet ultrasonic changer, and design structure is simple, easy to operate, no dirty
Dye, does not injure to human body, and operating cost is low；With respect to piezoelectric supersonic thickness measuring transducer, the present invention adopts electromagnetic acoustic transducing
Device, without the need for couplant, it is not necessary to pure water, will not make the wasting of resources, that is, it is also not in ask to be used in more than 400 degree thickness measurings
Topic.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understanding can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (10)
1. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring, including transducer body (1) and handle (2), the handss
One end of handle (2) is fixed by screws on transducer body (1)；It is characterized in that：Described transducer body (1) includes coil
Component (3), cable locking joint (4), cable locking joint (4) are pressed on coil block (3), and are fixed by screws in
On transducer body (1)；Cable locking joint (4) place is fixed with cable assembly (6), and cable assembly (6) is from handle (2)
Inside pass through and exceed handle (2).
2. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 1, it is characterised in that：Described
Transducer body (1) also includes roll wheel assembly (5), and described roll wheel assembly (5) include roller (7) and roller shaft (8), the roller
(7) string is on roller shaft (8), and roll wheel assembly (5) are placed in the underface of transducer body (1).
3. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 1, it is characterised in that：Described
The inside of handle (2) is hollow structure.
4. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 1, it is characterised in that：Described
Coil block (3) includes solenoid (9), magnetic conduction soft magnetic bodies (10), permanent magnet (11), coil rack (12), nonmetallic wear-resisting
Protective case (13), solenoid (9) are placed in coil rack (12) bottom, and the two is bonded by glue；The magnetic conduction is soft
Magnet (10) is placed on solenoid (9), and the two is bonded by glue；Permanent magnet (11) are placed in magnetic conduction soft magnetic bodies
(10) on, and permanent magnet (11) is placed in the inner chamber size coil rack (12) supporting with permanent magnet (11) size；Described
Coil rack (12) is placed on nonmetallic wear-resistant protection set (13)；Nonmetallic wear-resistant protection set (13) are fixed by screws in
On transducer body (1).
5. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 2, it is characterised in that：Described
The quantity of roll wheel assembly (5) is 2, is respectively placed in transducer body (1) bottom front and back position.
6. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 5, it is characterised in that：Described
Roll wheel assembly (5) is embedded in transducer body (1), and the vertical interval of the bottom surface of roller (7) and the bottom surface of transducer body (1)
A is between (0.3～0.5) mm.
7. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 4, it is characterised in that：Described
Solenoid (9) is formed by enamel-covered wire coiling, and its number of turn is that (10～30) circle, enamel-covered wire line footpath is between (0.1～0.3) mm.
8. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 7, it is characterised in that：Described
The working inductance amount of solenoid (9) between (3.0～18.0) uH, working direct current impedance between (0.8～3.5) Ω, work
Working frequency is between (1.0～5.0) MHZ.
9. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 8, it is characterised in that：Described
Vertical interval B of the base plane of coil rack (12) and the upper plane of nonmetallic wear-resistant protection set (13) is in (0.5～1.0) mm
Between, and the material of coil rack (12) can be synthetic resin material, the non-metallic material of nonmetallic wear-resistant protection set (13)
Matter can be ceramic-like material or synthetic resin material.
10. a kind of electromagnet ultrasonic changer for ductile iron pipe thickness measuring according to claim 9, it is characterised in that：Institute
State the end thereof contacts permanent magnet (11) of cable assembly (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078109.2A CN106441179A (en) | 2016-11-30 | 2016-11-30 | Electromagnetic ultrasonic transducer for measuring thickness of globular graphite cast tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611078109.2A CN106441179A (en) | 2016-11-30 | 2016-11-30 | Electromagnetic ultrasonic transducer for measuring thickness of globular graphite cast tube |
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| CN106441179A true CN106441179A (en) | 2017-02-22 |
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| CN201611078109.2A Pending CN106441179A (en) | 2016-11-30 | 2016-11-30 | Electromagnetic ultrasonic transducer for measuring thickness of globular graphite cast tube |
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| CN107421474A (en) * | 2017-04-25 | 2017-12-01 | 武汉中科创新技术股份有限公司 | A kind of electromagnetic ultrasonic thickness measuring probe for measuring thickness of workpiece |
| CN107607626A (en) * | 2017-09-13 | 2018-01-19 | 中国石油天然气集团公司管材研究所 | Electromagnet ultrasonic changer and the equipment with electromagnet ultrasonic changer automatic detection steel plate |
| CN107941921A (en) * | 2017-12-19 | 2018-04-20 | 河南中原光电测控技术有限公司 | Steel rail web electromagnetic ultrasonic detection probe and electromagnetic supersonic detection device |
| CN108225228A (en) * | 2018-04-13 | 2018-06-29 | 沈阳工业大学 | Detection electromagnetic ultrasonic thickness measuring transducer architecture in circular pipe |
| CN108760896A (en) * | 2018-04-13 | 2018-11-06 | 沈阳工业大学 | Electromagnetic supersonic flaw detecting transducer architecture is detected in circular pipe |
| CN109883368A (en) * | 2019-04-03 | 2019-06-14 | 衡阳镭目科技有限责任公司 | A kind of metal pipe-wall thickness detector and detection method |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190788Y (en) * | 1994-04-18 | 1995-03-01 | 窦毓棠 | High sensitiveness sensor steel wire cable non-damage crack detector |
| CN101750009A (en) * | 2009-12-31 | 2010-06-23 | 南京磁谷科技有限公司 | Magnetic-shielding eddy current sensor probe and method for reducing eddy current effect |
| CN202145131U (en) * | 2011-07-21 | 2012-02-15 | 新兴铸管股份有限公司 | Apparatus for detecting thickness and internal defect of wall of nodular cast iron pipe |
| CN203479275U (en) * | 2013-11-25 | 2014-03-12 | 广东汕头超声电子股份有限公司 | High-temperature resistant electromagnetic ultrasonic thickness measurement probe |
| US20140225602A1 (en) * | 2011-05-25 | 2014-08-14 | Helmut Fischer | Measuring probe for measuring the thickness of thin layers |
| CN105043310A (en) * | 2015-06-18 | 2015-11-11 | 中国特种设备检测研究院 | Transverse-wave straight-incidence electromagnetic ultrasonic sensor |
| CN105548352A (en) * | 2015-11-17 | 2016-05-04 | 苏州博昇科技有限公司 | Electromagnetic ultrasonic transducer of end portion-free detection blind area |
| CN205538844U (en) * | 2016-02-03 | 2016-08-31 | 中国特种设备检测研究院 | Ultra -temperature electromagnetic acoustic sensor |
-
2016
- 2016-11-30 CN CN201611078109.2A patent/CN106441179A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2190788Y (en) * | 1994-04-18 | 1995-03-01 | 窦毓棠 | High sensitiveness sensor steel wire cable non-damage crack detector |
| CN101750009A (en) * | 2009-12-31 | 2010-06-23 | 南京磁谷科技有限公司 | Magnetic-shielding eddy current sensor probe and method for reducing eddy current effect |
| US20140225602A1 (en) * | 2011-05-25 | 2014-08-14 | Helmut Fischer | Measuring probe for measuring the thickness of thin layers |
| CN202145131U (en) * | 2011-07-21 | 2012-02-15 | 新兴铸管股份有限公司 | Apparatus for detecting thickness and internal defect of wall of nodular cast iron pipe |
| CN203479275U (en) * | 2013-11-25 | 2014-03-12 | 广东汕头超声电子股份有限公司 | High-temperature resistant electromagnetic ultrasonic thickness measurement probe |
| CN105043310A (en) * | 2015-06-18 | 2015-11-11 | 中国特种设备检测研究院 | Transverse-wave straight-incidence electromagnetic ultrasonic sensor |
| CN105548352A (en) * | 2015-11-17 | 2016-05-04 | 苏州博昇科技有限公司 | Electromagnetic ultrasonic transducer of end portion-free detection blind area |
| CN205538844U (en) * | 2016-02-03 | 2016-08-31 | 中国特种设备检测研究院 | Ultra -temperature electromagnetic acoustic sensor |
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| CN107421474A (en) * | 2017-04-25 | 2017-12-01 | 武汉中科创新技术股份有限公司 | A kind of electromagnetic ultrasonic thickness measuring probe for measuring thickness of workpiece |
| CN107084692A (en) * | 2017-06-30 | 2017-08-22 | 沈阳工业大学 | Electromagnetic acoustic shear wave thickness measuring transducer |
| CN107607626A (en) * | 2017-09-13 | 2018-01-19 | 中国石油天然气集团公司管材研究所 | Electromagnet ultrasonic changer and the equipment with electromagnet ultrasonic changer automatic detection steel plate |
| CN107941921A (en) * | 2017-12-19 | 2018-04-20 | 河南中原光电测控技术有限公司 | Steel rail web electromagnetic ultrasonic detection probe and electromagnetic supersonic detection device |
| CN108225228A (en) * | 2018-04-13 | 2018-06-29 | 沈阳工业大学 | Detection electromagnetic ultrasonic thickness measuring transducer architecture in circular pipe |
| CN108760896A (en) * | 2018-04-13 | 2018-11-06 | 沈阳工业大学 | Electromagnetic supersonic flaw detecting transducer architecture is detected in circular pipe |
| CN109883368A (en) * | 2019-04-03 | 2019-06-14 | 衡阳镭目科技有限责任公司 | A kind of metal pipe-wall thickness detector and detection method |
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