CN106950603A - The probe that ferromagnetism thing is deposited in a kind of detection heating surface tubes in boilers - Google Patents
The probe that ferromagnetism thing is deposited in a kind of detection heating surface tubes in boilers Download PDFInfo
- Publication number
- CN106950603A CN106950603A CN201710174071.7A CN201710174071A CN106950603A CN 106950603 A CN106950603 A CN 106950603A CN 201710174071 A CN201710174071 A CN 201710174071A CN 106950603 A CN106950603 A CN 106950603A
- Authority
- CN
- China
- Prior art keywords
- heating surface
- probe
- hall element
- deposited
- iron ring
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/10—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices using induction coils
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Life Sciences & Earth Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
Abstract
The invention discloses a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers, including heating surface tube, inwall is provided with inside heating surface tube, inwall is provided with permanent magnets, outer wall is provided with the outside of heating surface tube, probe body is provided with the middle part of outer wall lower end, probe body includes probing shell and iron ring, induction coil is wound with the outside of iron ring, it is connected with the right side of induction coil into wire, induction coil left end is connected with out wire, Hall element is provided with the middle part of iron ring lower end, Hall element lower end is connected with amplifier, Hall element upper end is connected with constant current source, constant current source is connected with power lead.The present invention, change of the magnetic field produced using permanent magnets in the intensity of the oxide skin of different-thickness, and then produce the electric current of varying strength, the electric current detected by Hall element is amplified by the effect of amplifier again, the ferromagnetism thing amount such as oxide skin, iron filings is determined according to current signal power, implement simple, reliability is high.
Description
Technical field
It is specifically a kind of to detect ferromagnetism thing deposition in heating surface tubes in boilers the present invention relates to technical field of nondestructive testing
Probe.
Background technology
Newly-built station boiler is in process of construction, because of the iron filings, ophthalmic len, oxygen that are produced during manufacture, installation, trial operation
The ferromagnetism thing such as compound is easily retained in heating surface tube, and blocking is formed in throttle orifice and bend pipe in pipe；In-service boiler tubes of power plant
Serious steam side scale spallation also generally occurs in use, the oxide skin of peeling also easily throttles in boiler tube
Formed and blocked in hole or bend pipe, the boiler tube temperature of blocking steeply rises to trigger overheat booster, has a strong impact on the peace of boiler
Full stable operation.
In order to prevent the generation of pipe explosion accident, the detection to ferromagnetism thing deposition/accumulating amount in boiler tube is very necessary.And
At present the measurement blocked is deposited to the ferromagnetism thing such as throttle orifice in boiler tube or bend pipe internal oxidition skin, iron filings typically to examine using ray
Survey, due to being limited by site space, implement that this method difficulty is larger and easy missing inspection, and due to danger of the ray to human body
Evil is larger, influences being smoothed out for other service works.
The content of the invention
It is an object of the invention to provide a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers, with solution
State the problem of being proposed in background technology.
To achieve the above object, the present invention provides following technical scheme：
Set inside the probe that ferromagnetism thing is deposited in a kind of detection heating surface tubes in boilers, including heating surface tube, the heating surface tube
There is inwall, inwall, which is provided with the outside of permanent magnets, heating surface tube, is provided with outer wall, and probe body, the spy are provided with the middle part of outer wall lower end
Head body, which includes being wound with the outside of probing shell and iron ring, the iron ring on the right side of induction coil, induction coil, to be connected with into wire,
Induction coil left end is connected with out in the middle part of wire, the iron ring lower end and is provided with Hall element, and Hall element lower end is connected with amplification
Device, Hall element upper end is connected with constant current source, and constant current source is connected with power lead.
It is used as further scheme of the invention：Oxide skin is provided with inside the heating surface tube.
It is used as further scheme of the invention：The amplifier is connected with into wire.
It is used as further scheme of the invention：It is described go out wire be connected with detection resistance.
It is used as further scheme of the invention：Opening is provided with the middle part of the iron ring lower end.
It is used as further scheme of the invention：The Hall element constitutes for semi-conducting material.
Compared with prior art, the beneficial effects of the invention are as follows：
A kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers, it is rational in infrastructure, it is novel in design, by iron ring
Middle part is provided with Hall element, and the magnetic field produced using permanent magnets and then is produced in the change of the intensity of the oxide skin of different-thickness
The electric current of varying strength, then be amplified the electric current detected by Hall element by the effect of amplifier, believed according to electric current
Number power is determined to the ferromagnetism thing amount such as oxide skin, iron filings, is detected, is limited by site space without carrying out ray
System is small, implements simple, reliability is high.
Brief description of the drawings
Fig. 1 is a kind of structural representation for detecting the probe that ferromagnetism thing is deposited in heating surface tubes in boilers.
Fig. 2 is a kind of structural representation for detecting probe body in the probe that ferromagnetism thing is deposited in heating surface tubes in boilers.
Fig. 3 is the structural representation of iron ring in Fig. 2.
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 invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every 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.
Refer in Fig. 1~3, the embodiment of the present invention, a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers,
Including heating surface tube 1, the inside of heating surface tube 1 is provided with oxide skin 3, and the inside of heating surface tube 1 is provided with inwall 5, inwall 5
Provided with permanent magnets 6, the constant electromagnetic field intensity for producing, the outside of heating surface tube 1 is provided with the middle part of outer wall 2, the lower end of outer wall 2 and is provided with
Probe body 4, the probe body 4 includes being provided with opening, the opening in the middle part of probing shell 10 and iron ring 8, the lower end of iron ring 8
Provided with Hall element 17, the outside of iron ring 8 is wound with induction coil 16, for feeding back the magnetic flux flowed through in iron ring 8, is used for
The right side of induction coil 16 is connected with into wire 9, the amplification current signal for accessing amplifier 14, the connection of the left end of induction coil 16
There is wire 10, go out wire 10 and be connected with detection resistance, be easy to us to be detected, Hall is provided with the middle part of the lower end of iron ring 8
Element 17, Hall element 17 constitutes for semi-conducting material, so that the sensitivity of Hall element 17 is added, the lower end of Hall element 17
Amplifier 14 is connected with, the small-signal for amplifying the generation of Hall element 17, amplifier 14 is connected with into wire 11, Hall member
The upper end of part 17 is connected with constant current source 13, and the constant electric current for producing, constant current source 13 is connected with power lead 12.
A kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers, in use, only needing to put permanent magnets 6
In the inwall of heating surface tube 1, cause that the side of iron ring 8 in probe body 4 touches the outer wall of heating surface tube 1 afterwards, afterwards not
Disconnected shifting probe body 4, simultaneously, synchronizing moving permanent magnetism 6 will go out wire 12 and be connected to signal processing apparatus, just afterwards
The change of the electric current of diverse location can be drawn, the purpose of detection is reached with this.The present invention, it is rational in infrastructure, it is novel in design, by
The middle part of iron ring 5 is provided with Hall element 17, the magnetic field produced using permanent magnets 6 the intensity of the oxide skin 3 of different-thickness change,
And then the electric current of varying strength is produced, then put the electric current detected by Hall element 17 by the effect of amplifier 14
Greatly, the ferromagnetism thing amount such as oxide skin 3 is determined according to current signal power, detected without carrying out ray, by existing
The limitation in field space is small, implements simple, reliability is high.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit is required rather than described above is limited, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as to the claim involved by limitation.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (6)
1. a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers, including heating surface tube（1）, it is characterised in that institute
State heating surface tube（1）Inside is provided with inwall（5）, inwall（5）It is provided with permanent magnets（6）, heating surface tube（1）Outside is provided with outer wall
（2）, outer wall（2）Probe body is provided with the middle part of lower end（4）, the probe body（4）Including probing shell（10）And iron ring（8）,
The iron ring（8）Outside is wound with induction coil（16）, induction coil（16）Right side is connected with into wire（9）, induction coil
（16）Left end is connected with out wire（10）, the iron ring（8）Hall element is provided with the middle part of lower end（17）, Hall element（17）Lower end
It is connected with amplifier（14）, Hall element（17）Upper end is connected with constant current source（13）, constant current source（13）It is connected with electricity
Source wire（12）.
2. a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers according to claim 1, it is characterised in that
The heating surface tube（1）Inside is provided with oxide skin（3）.
3. a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers according to claim 1, it is characterised in that
The amplifier（14）It is connected with into wire（11）.
4. a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers according to claim 1, it is characterised in that
It is described go out wire（10）It is connected with detection resistance.
5. a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers according to claim 1, it is characterised in that
The iron ring（8）Opening is provided with the middle part of lower end.
6. a kind of probe for detecting that ferromagnetism thing is deposited in heating surface tubes in boilers according to claim 1, it is characterised in that
The Hall element（17）Constituted for semi-conducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174071.7A CN106950603A (en) | 2017-03-22 | 2017-03-22 | The probe that ferromagnetism thing is deposited in a kind of detection heating surface tubes in boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710174071.7A CN106950603A (en) | 2017-03-22 | 2017-03-22 | The probe that ferromagnetism thing is deposited in a kind of detection heating surface tubes in boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106950603A true CN106950603A (en) | 2017-07-14 |
Family
ID=59472795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710174071.7A Pending CN106950603A (en) | 2017-03-22 | 2017-03-22 | The probe that ferromagnetism thing is deposited in a kind of detection heating surface tubes in boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106950603A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993023749A1 (en) * | 1992-05-14 | 1993-11-25 | Western Atlas International, Inc. | Magnetic flaw detector for tubular goods |
| CN201407989Y (en) * | 2009-03-30 | 2010-02-17 | 爱德森（厦门）电子有限公司 | Electromagnetism detection device for oxide coating thickness of stainless steel tube |
| CN101750011A (en) * | 2010-01-19 | 2010-06-23 | 广东拓奇电力技术发展有限公司 | Scale detecting instrument in tube on high-temperature heating surface of supercritical boiler and detection method |
| CN102033105A (en) * | 2010-11-25 | 2011-04-27 | 山东电力研究院 | Method for measuring deposition of scales at inner wall of Austenitic boiler tube based ultra-low-frequency vortex |
| CN102901769A (en) * | 2012-11-12 | 2013-01-30 | 湖南省湘电锅炉压力容器检验中心有限公司 | Probe for detecting ferromagnetic substance deposition in heated surface pipe of boiler |
| CN103543473A (en) * | 2013-10-24 | 2014-01-29 | 国家电网公司 | Austenite heating surface oxide skin electromagnetic detector, detecting system and work method |
| CN203561410U (en) * | 2013-10-30 | 2014-04-23 | 国网吉林省电力有限公司电力科学研究院 | Rapid measurement device for deposited scale amount of austenite heated surface pipe of thermal power plant |
| CN205229478U (en) * | 2015-12-01 | 2016-05-11 | 河南省锅炉压力容器安全检测研究院 | Intraductal ferromagnetism thing deposit of semi -enclosed boiler heating surface probe |
-
2017
- 2017-03-22 CN CN201710174071.7A patent/CN106950603A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993023749A1 (en) * | 1992-05-14 | 1993-11-25 | Western Atlas International, Inc. | Magnetic flaw detector for tubular goods |
| CN201407989Y (en) * | 2009-03-30 | 2010-02-17 | 爱德森（厦门）电子有限公司 | Electromagnetism detection device for oxide coating thickness of stainless steel tube |
| CN101750011A (en) * | 2010-01-19 | 2010-06-23 | 广东拓奇电力技术发展有限公司 | Scale detecting instrument in tube on high-temperature heating surface of supercritical boiler and detection method |
| CN102033105A (en) * | 2010-11-25 | 2011-04-27 | 山东电力研究院 | Method for measuring deposition of scales at inner wall of Austenitic boiler tube based ultra-low-frequency vortex |
| CN102901769A (en) * | 2012-11-12 | 2013-01-30 | 湖南省湘电锅炉压力容器检验中心有限公司 | Probe for detecting ferromagnetic substance deposition in heated surface pipe of boiler |
| CN103543473A (en) * | 2013-10-24 | 2014-01-29 | 国家电网公司 | Austenite heating surface oxide skin electromagnetic detector, detecting system and work method |
| CN203561410U (en) * | 2013-10-30 | 2014-04-23 | 国网吉林省电力有限公司电力科学研究院 | Rapid measurement device for deposited scale amount of austenite heated surface pipe of thermal power plant |
| CN205229478U (en) * | 2015-12-01 | 2016-05-11 | 河南省锅炉压力容器安全检测研究院 | Intraductal ferromagnetism thing deposit of semi -enclosed boiler heating surface probe |
Non-Patent Citations (1)
| Title |
|---|
| 陈圣林等: "《图解传感器技术及应用电路（第2版）》", 31 August 2009 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102901769B (en) | Probe for detecting ferromagnetic substance deposition in heated surface pipe of boiler | |
| CN106556730A (en) | Current sensor and the measurement apparatus comprising the current sensor | |
| CN206488822U (en) | Suitable for the electromagnetic flowmeter of low flow velocity | |
| CN104165923A (en) | Nondestructive flaw detection device for metal wire/pipe | |
| CN103439402B (en) | Ferromagnetism thing deposition chocking-up degree detection method in boiler austenitic stainless steel elbow | |
| CN101782420B (en) | Method for detecting scale cinder accumulation amount in boiler bent pipe | |
| CN103983177A (en) | Heated surface tube inner oxide skin accumulation condition detection method | |
| CN101344595A (en) | Shield excitation quantitative determination probe and method thereof | |
| CN204925032U (en) | Pile up cinder detection with probe in can realizing automatic quantitative boiler tube | |
| CN103076388B (en) | Non-destructive detection method for accumulation of oxide coatings on inner wall of steel tube of power station boiler | |
| US9360207B2 (en) | Assembly and method for detecting and measuring the fouling rateof flow holes in a secondary circuit of a pressurized water nuclear reactor | |
| CN105044201A (en) | Saddle-shaped open vortex detection device and vortex detection method | |
| CN103033558B (en) | Non-destructive testing method for oxide accumulation state of inner wall of austenitic boiler steel tube of utility boiler | |
| CN109507283A (en) | A kind of PCCP pipeline steel wire fracture of wire far-field vortex checking method | |
| CN106950603A (en) | The probe that ferromagnetism thing is deposited in a kind of detection heating surface tubes in boilers | |
| CN206945610U (en) | A kind of boiler Austenitic stainless steel pipe oxide accumulates the cannot-harm-detection device | |
| CN201628701U (en) | Detecting probe for oxide in austenitic pipe | |
| CN103558443B (en) | A kind of current sensor | |
| CN207636538U (en) | A kind of Metal pipeline corrosion defects detection low frequency electromagnetic sensor array | |
| CN110346838A (en) | A kind of PCCP pipe fracture of wire detection device based on orthogonal electromagnetic principle | |
| CN210221898U (en) | Probe and detector for detecting ferromagnetic blockage in austenitic stainless steel pipe | |
| CN204882461U (en) | Body surface defect detection system based on shape of a saddle vortex probe | |
| CN214309015U (en) | Mutual coupling type ball passing detection sensor | |
| CN204302227U (en) | A kind of array probe of ferromagnetism light-wall pipe circumference ac magnetization Magnetic Flux Leakage Inspecting | |
| CN207675111U (en) | A kind of tube on high-temperature heating surface of supercritical boiler internal oxidition skin falls off precaution device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170714 |