CN204255884U - Portable concrete defect detector - Google Patents

Portable concrete defect detector Download PDF

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Publication number
CN204255884U
CN204255884U CN201420795955.6U CN201420795955U CN204255884U CN 204255884 U CN204255884 U CN 204255884U CN 201420795955 U CN201420795955 U CN 201420795955U CN 204255884 U CN204255884 U CN 204255884U
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CN
China
Prior art keywords
concrete
detecting head
main frame
line
detector
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.)
Expired - Fee Related
Application number
CN201420795955.6U
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Chinese (zh)
Inventor
黄翼虎
栾浩杰
刘淑泉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao University of Science and Technology
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Qingdao University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qingdao University of Science and Technology filed Critical Qingdao University of Science and Technology
Priority to CN201420795955.6U priority Critical patent/CN204255884U/en
Application granted granted Critical
Publication of CN204255884U publication Critical patent/CN204255884U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of portable concrete defect detector, comprise portable hand-held main frame, connecting line, detecting head and four wheel supports, described connecting line one end, is connected with main frame, the other one end of connecting line is connected with detecting head, and described detecting head is fixed on four wheel supports.This detector utilizes moderation of neutrons principle, and launch fast neutron by the transmitter of detecting head, fast neutron converts thermal neutron at inside concrete.Thermal neutron is collected by the receiver of detecting head.When in concrete during defectiveness the thermal neutron rate of corresponding conversion can undergo mutation.Utilize this principle can carry out realizing defect in concrete fast, lossless decomposition.This detector also have simple to operate, single testing cost is low, do not rely on concrete grade, the feature of highly versatile.

Description

Portable concrete defect detector
Technical field
The utility model relates to a kind of survey instrument, refers in particular to, and a kind ofly utilizes moderation of neutrons principle and the concrete defect detector designed.
Background technology
Concrete defect refers to and occurs crack at inside concrete, or leaves the air not having to discharge during casting concrete.These defects can cause the change of mechanical property to concrete construction, and cannot observe inner damage on surface.Very large hidden danger can be there is in obvious band defective concrete facility once come into operation.
Portable concrete defect detector is the instrument detecting inside concrete fracture defect with loseless method.Existing this kind of instrument acoustic emission audiomonitor, this kind equipment is at concrete facility surface mount sensor, monitor concrete always, until send the acoustic emission signal of fracture when concrete destruction being detected, its equipment layout is numerous and diverse, need professional to operate, and it is uninterrupted to run needs, cost is huge; Have the CT detector utilizing CT computed tomography scanning technology, this kind equipment is similar to human body according to CT, and defect can be seen intuitively, but this kind of bulky, with high costs; Utilize the concrete method of audio detection, but the concrete of this method to different labels has different audio frequency, and major part obtains source of sound with manually knocking concrete surface, the dynamics of knocking is not easy to hold, poor universality.All there is a lot of defect in these methods, can only use in laboratory scope.
Utility model content
The technical matters that the utility model mainly solves is to provide the portable concrete defect detector that a kind of volume is little, lightweight, applied widely, easy to operate, single testing cost is cheap.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
There is provided a kind of portable concrete defect detector, comprise portable hand-held main frame, connecting line, detecting head and four wheel supports, described connecting line one end, is connected with main frame, and the other one end of connecting line is connected with detecting head, and described detecting head is fixed on four wheel supports.Described detecting head is made up of fast neutron emissive source and thermal neutron receiver two parts, and described fast neutron emissive source adopts americium-beryllium neutron source to produce, and described thermal neutron receiver adopts lithium glass scintillation detector.Described taking on the hand-held main frame of formula is provided with LCDs and keyboard.USB socket is provided with bottom described portable hand-held main frame.The described hand-held main frame top of formula of taking is provided with battery cabin cap.
Portable concrete defect detector of the present utility model is according to moderation of neutrons principle, and thermal neutron counting rate is relevant with hydrogen atom total amount in measured material.Moisture (hydrogen) material in the fast neutron that neutron source is launched and concrete interacts, and is formed thermal neutron by hydrogen atom slowing down.When material moisture content is certain certain value, measured thermal neutron counting rate is relevant with material thickness.When running into defect there is air gap due to fault location in concrete, causes thermal neutron counting rate to suddenly change.Catastrophe characteristics is utilized to judge defect in concrete.
The beneficial effects of the utility model are: the utility model portable concrete defect detector is simple to operate, single testing cost is low, do not rely on concrete grade, highly versatile, can quick, undamagedly to detect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model portable concrete defect detector one preferred embodiment;
In accompanying drawing, the mark of each parts is as follows: 1, portable hand-held main frame, and 2, connecting line, 3, detecting head, 4, four wheel supports, 5, fast neutron emissive source, 6, thermal neutron receiver, 7, LCDs, 8, keyboard, 9, USB socket, 10, battery cabin cap.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail, to make advantage of the present utility model and feature can be easier to be readily appreciated by one skilled in the art, thus more explicit defining is made to protection domain of the present utility model.
Refer to Fig. 1, the utility model embodiment comprises:
During measurement, get out workpiece for measurement.As shown in Figure 1, comprise portable hand-held main frame 1, connecting line 2, detecting head 3 and four wheel supports 4, described connecting line one end, is connected with main frame, and the other one end of connecting line is connected with detecting head 3, and described detecting head 3 is fixed on four wheel supports 4.Described detecting head 3 is made up of fast neutron emissive source 5 and thermal neutron receiver 6 two parts, and described fast neutron emissive source 5 adopts americium-beryllium neutron source to produce, and described thermal neutron receiver 6 is lithium glass scintillation detectors.Described taking on the hand-held main frame of formula is provided with LCDs 7 and keyboard 8.Described taking bottom the hand-held main frame of formula is provided with USB socket 9, can by transmitting measured values to computer.The described hand-held main frame top of formula of taking is provided with battery cabin cap 10 to be convenient for changing battery.
The working method of portable concrete defect detector of the present utility model:
Portable concrete defect detector of the present utility model, when detecting defect, needs to keep concrete humidity to be measured unanimous on the whole.Four wheel supports 4 are placed on detected concrete one side, test parameter is set by keyboard 8.LCDs 7 and keyboard 8 have several functions: can set upper lower limit value, and when measurement result is more than or equal to bound numerical value, instrument can send corresponding sound and alarm, can delete single or multiple data.Pen-down detection key after setting completed, makes detector enter detected state, along with a sound buzzer, and screen display " READY " information.Tester at the uniform velocity promotes four wheel supports 4 and slides along concrete surface.Now LCDs 7 show thermal neutron rate, temporal information, displacement, according to thermal neutron rate draw real-time curve and electricity, now tester only needs at the uniform velocity slide four wheel supports 4 and listen to alarm sound carefully, if there is warning message, there is buzzer to point out in operating process, LCD screen shows " WARNING! ", and there is saltus step in drawing curve.This illustrates existing defects below the position of four wheel supports 4, and operating personnel make marks at concrete surface, indicate defective locations.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model instructions and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (5)

1. a portable concrete defect detector, it is characterized in that: comprise portable hand-held main frame (1), connecting line (2), detecting head (3) and four wheel supports (4), described connecting line one end, be connected with main frame, the other one end of connecting line is connected with detecting head (3), and described detecting head (3) is fixed on four wheel supports (4).
2. portable concrete defect detector according to claim 1, it is characterized in that: described detecting head (3) is made up of fast neutron emissive source (5) and thermal neutron receiver (6) two parts, described fast neutron emissive source (5) adopts americium-beryllium neutron source to produce, and described thermal neutron receiver (6) is lithium glass scintillation detector.
3. portable concrete defect detector according to claim 1, is characterized in that: described in take on the hand-held main frame of formula and be provided with LCDs (7) and keyboard (8).
4. portable concrete defect detector according to claim 1, is characterized in that: described in take bottom the hand-held main frame of formula and be provided with USB socket (9).
5. portable concrete defect detector according to claim 1, is characterized in that: described in take the hand-held main frame top of formula and be provided with battery cabin cap (10).
CN201420795955.6U 2014-12-15 2014-12-15 Portable concrete defect detector Expired - Fee Related CN204255884U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420795955.6U CN204255884U (en) 2014-12-15 2014-12-15 Portable concrete defect detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420795955.6U CN204255884U (en) 2014-12-15 2014-12-15 Portable concrete defect detector

Publications (1)

Publication Number Publication Date
CN204255884U true CN204255884U (en) 2015-04-08

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Family Applications (1)

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CN201420795955.6U Expired - Fee Related CN204255884U (en) 2014-12-15 2014-12-15 Portable concrete defect detector

Country Status (1)

Country Link
CN (1) CN204255884U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109307679A (en) * 2018-11-13 2019-02-05 深圳市中核共创科技有限公司 A kind of detection method, detection device and the terminal device of concrete void depth
CN109342469A (en) * 2018-11-13 2019-02-15 深圳市中核共创科技有限公司 A kind of method, apparatus and terminal device detecting concrete void depth
CN109507743A (en) * 2018-12-04 2019-03-22 南京航空航天大学 A kind of high-precision scanning detecting a mine device and scanning detection method
WO2019183996A1 (en) * 2018-03-27 2019-10-03 深圳市中核共创科技有限公司 Concrete void detection method and apparatus, terminal device, and medium

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019183996A1 (en) * 2018-03-27 2019-10-03 深圳市中核共创科技有限公司 Concrete void detection method and apparatus, terminal device, and medium
CN109307679A (en) * 2018-11-13 2019-02-05 深圳市中核共创科技有限公司 A kind of detection method, detection device and the terminal device of concrete void depth
CN109342469A (en) * 2018-11-13 2019-02-15 深圳市中核共创科技有限公司 A kind of method, apparatus and terminal device detecting concrete void depth
CN109342469B (en) * 2018-11-13 2021-04-09 深圳市中核共创科技有限公司 Method and device for detecting concrete void depth and terminal equipment
CN109307679B (en) * 2018-11-13 2021-04-09 深圳市中核共创科技有限公司 Concrete void depth detection method and device and terminal equipment
CN109507743A (en) * 2018-12-04 2019-03-22 南京航空航天大学 A kind of high-precision scanning detecting a mine device and scanning detection method

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150408

Termination date: 20151215

EXPY Termination of patent right or utility model