CN205593971U - Embedded cyclic annular piezoceramic transducer - Google Patents
Embedded cyclic annular piezoceramic transducer Download PDFInfo
- Publication number
- CN205593971U CN205593971U CN201620448470.9U CN201620448470U CN205593971U CN 205593971 U CN205593971 U CN 205593971U CN 201620448470 U CN201620448470 U CN 201620448470U CN 205593971 U CN205593971 U CN 205593971U
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- CN
- China
- Prior art keywords
- utility
- model
- concrete structure
- protective layer
- grouting
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- 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.)
- Withdrawn - After Issue
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- 125000004122 cyclic group Chemical group 0.000 title abstract 2
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 14
- 239000011247 coating layer Substances 0.000 claims abstract description 7
- 239000000919 ceramic Substances 0.000 claims description 28
- 239000003822 epoxy resin Substances 0.000 claims description 7
- 229920000647 polyepoxide Polymers 0.000 claims description 7
- 239000000463 material Substances 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 abstract description 8
- 239000010959 steel Substances 0.000 abstract description 8
- 238000007689 inspection Methods 0.000 abstract description 5
- 239000011148 porous material Substances 0.000 abstract description 5
- 239000011513 prestressed concrete Substances 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 238000003466 welding Methods 0.000 abstract description 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 239000004567 concrete Substances 0.000 description 9
- 238000001514 detection method Methods 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000004927 clay Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model provides an embedded cyclic annular piezoceramic transducer is applicable to the inspection of the closely knit degree of post stretching prestressed concrete structure duct grouting, belongs to civil engineering field. The utility model discloses a, two ring shape piezoceramics pieces, epoxy protective layer, shielding coating layer and cement surrounding layers of welding lead are constituteed. Particularly, when duct grouting highly changes in post stretching prestressed concrete structure, in the sensor between the two rings shape piezoceramics piece signal of telecommunication can change, can reflect grouting quality's in the pore quality, owing to the utility model discloses a loop configuration can directly be overlapped on prestressing steel or steel strand wires, the utility model is suitable for an inspection of the closely knit degree of post stretching prestressed concrete structure duct grouting. And the material of this sensor low price own, simple structure, simple to operate provide a simple and convenient feasible method for the inspection of the closely knit degree of post stretching prestressed concrete structure duct grouting in the engineering.
Description
Technical field
This utility model relates to a kind of embedded annular piezoelectric ceramic sensor element, it is adaptable to post-stressed mixed
The inspection of Xtah Crude Clay structure duct grouting degree of compaction, belongs to field of civil engineering.
Background technology
Along with the fast development of China's capital construction, post-stressed concrete structure is the most economical because of it
Advantage is used widely in large bridge.And the premium properties of post-stressed concrete structure is necessary
Set up on deformed bar and structural concrete bond intact condition.Therefore, post-stressed mixed
Xtah Crude Clay structure duct grouting quality is increasingly subject to people's attention.
Piezoelectric ceramics is capable of the functional type ceramic material that mechanical energy is mutually changed, quilt with electric energy as a kind of
It is widely used in every field.Its direct piezoelectric effect refers to, piezoelectric element under the action of mechanical stress,
Internal positive and negative charge center can occur relative movement, produces polarization, causes piezoelectric unit two end surfaces to occur
The bound charge that symbol is contrary, and charge density is proportional to external force.Inverse piezoelectric effect refers to, to piezoelectricity
When element applies electric field, there is relative displacement and polarized in its internal positive and negative charge center, causes piezoelectric element
It is deformed.This utility model takes full advantage of positive piezoelectricity and the inverse piezoelectric effect of piezoelectric ceramics.
For concealed structure such for post-stressed concrete structure reserving hole channel, traditional detection side
Method needs manually to use detecting instrument, from the quality removing detection duct grouting of the outside pointwise of xoncrete structure,
Do not realize real time on-line monitoring, and the process that detects often has certain danger.
Utility model content
In order to solve the problems referred to above, this utility model provide one can conveniently install, without protection and
It is provided that the one of real time on-line monitoring post-tensioned concrete structure pore grouting quality is embedded ring-type
Piezoceramic transducer.
Due to the restriction of the material of piezoelectric ceramics own, it is very easy to be destroyed.And piezoelectric ceramics is encapsulated in
In the material of good endurance, the most packed piezoceramic transducer just can be as the sandstone bone in concrete
As material, it is directly placed in xoncrete structure, just defines intelligent aggregate.
One embedded annular piezoelectric ceramic sensor element proposed in this utility model, it is special to be that one has
The intelligent aggregate of version, inside has two piezoelectric ceramic rings, one as emitter, a conduct
Receptor, along with the continuous lifting of duct grouting height, receiving signal can change, by analyzing signal
Knots modification may determine that the quality of duct grouting.And the one proposed in this utility model buries
Formula annular piezoelectric ceramic sensor element has loop configuration, can be directly sleeved on deformed bar, easy for installation.
The technical solution of the utility model:
A kind of embedded annular piezoelectric ceramic sensor element, fills protect including ring-shaped piezo ceramic sheet 1, epoxy resin
Sheath 2, shielding coating layer 3, cement protective layer 4, wire 5 and snap-fit adapter (BNC) 6；
Wire 5 is welded on the both positive and negative polarity of ring-shaped piezo ceramic sheet 1, two ring-shaped piezo ceramic sheets 1 internal ring and
External annular surface is sequentially provided with epoxy resin and fills protective layer 2, shielding coating layer 3 and cement protective layer 4；Two
Connected fixing by protection annular piezoelectric ceramic piece 1 by cement protective layer 4；Snap-fit adapter (BNC)
6 are connected with wire 5.
The beneficial effects of the utility model:
1, built-in two the annular piezoelectric ceramic pieces of this device, utilize between signal of telecommunication knots modification and grouting height
Relation, it is possible to achieve be used alone a sensor and complete the detection of duct grouting quality.
2, this device makes full use of the feature of post-tensioning prestressed steel concrete pore passage structure, is set by sensor
Count into double piezoelectric ring structure, can be directly sleeved on deformed bar or steel strand wires, convenient installation.
3, this apparatus structure is simple, and material is cheap, makes with easy for installation, and without Additional Protection, can be real
The real-time monitoring of existing duct grouting quality, has the biggest market and application prospect.
Accompanying drawing explanation
Fig. 1 is this utility model entirety material object schematic diagram.
Fig. 2 is xy cross-sectional view of the present utility model.
Fig. 3 is the a-a cross-sectional view of this utility model Fig. 2.
Fig. 4 is the b-b cross-sectional view of this utility model Fig. 2.
Fig. 5 is sensor mounting location schematic diagram.
In figure: 1 ring-shaped piezo ceramic sheet；2 epoxy resin fill protective layer；3 shielding coating layers；4 cement
Protective layer；5 wires；6 snap-fit adapters (BNC)；7 sleeve pipes；8 deformed bars or steel strand wires；
9 embedded annular piezoelectric ceramic sensor elements.
Detailed description of the invention
Below in conjunction with accompanying drawing and technical scheme, further illustrate detailed description of the invention of the present utility model.
This utility model provides a kind of embedded annular piezoelectric ceramic sensor element, it is possible to achieve post stretching in advance should
The detection of power concrete structure pore grouting quality, detailed description of the invention is as follows:
First, wire 5 is welded on the both positive and negative polarity of ring-shaped piezo ceramic sheet 1.Welding the annular pressure of wire
First electroceramics sheet outer surface coats epoxy resin and fills protective layer 2, plays insulation both positive and negative polarity, prevents piezoelectric patches
The effect of short circuit.After epoxy resin protective layer 2 air-dries completely, coat shielding coating layer 3, can necessarily journey
The signal to noise ratio receiving the signal of telecommunication is improved on degree.Handle well two piezoelectric ceramic rings are put in mould, uses Buddhist nun
Dragon line is fixed, and uses cement mortar to fill mould, after treating cement slurry sets, forms cement protective layer 4, uses
Circuit tester detection sensor is the most short-circuit.Finally, by snap-fit adapter (BNC) 6 and wire 5
Connect, reuse circuit tester detection sensor the most short-circuit.
During use, a kind of for this utility model embedded annular piezoelectric ceramic sensor element 9 is directly sleeved on post stretching pre-
In prestressed concrete structure on deformed bar or steel strand wires 8, received the change of signal by sensor emission
Realize for the monitoring of grouting quality in sleeve pipe 7.
Here have should be noted that at 2: first, be the selection about annulus piezoelectric ceramic piece, be according to tested
In gaging hole road, the size of deformed bar or steel strand wires cement protective layer thickness internal with annulus rationally selects,
Ensure that the sensor encapsulated can be enclosed within deformed bar or steel strand wires.Second, it is to protect about cement
Sheath, the selection of cement model, the cement material identical with grouting material should be selected, it is ensured that embedment as far as possible
Sensor contact well with grouting liquid.
This utility model compared with prior art has the following advantages: sensor internal has two piezoelectric ceramic pieces,
Can realize the real time on-line monitoring utilizing single-sensor to complete duct grouting quality, material is cheap, technique
Simply, it will be widely used in the inspection of post-tensioned concrete structure pore grouting quality.
Claims (1)
1. an embedded annular piezoelectric ceramic sensor element, it is characterised in that embedded annular piezoelectric ceramic sensor element
Protective layer, shielding coating layer, cement protective layer, wire is filled including ring-shaped piezo ceramic sheet, epoxy resin
With snap-fit adapter；Wire is welded on the both positive and negative polarity of ring-shaped piezo ceramic sheet, at two ring piezoelectrics
The internal ring of potsherd and external annular surface are sequentially provided with epoxy resin and fill protective layer, shielding coating layer and cement guarantor
Sheath；Two protected ring-shaped piezo ceramic sheets connect fixing by cement protective layer；Snap-fit is even
Connect device to be connected with wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448470.9U CN205593971U (en) | 2016-05-17 | 2016-05-17 | Embedded cyclic annular piezoceramic transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620448470.9U CN205593971U (en) | 2016-05-17 | 2016-05-17 | Embedded cyclic annular piezoceramic transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205593971U true CN205593971U (en) | 2016-09-21 |
Family
ID=56931113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620448470.9U Withdrawn - After Issue CN205593971U (en) | 2016-05-17 | 2016-05-17 | Embedded cyclic annular piezoceramic transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205593971U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866249A (en) * | 2016-05-17 | 2016-08-17 | 大连理工大学 | Embedded circular piezoceramic sensor |
| CN113552220A (en) * | 2021-08-13 | 2021-10-26 | 同济大学 | Reinforced concrete structure health monitoring system |
-
2016
- 2016-05-17 CN CN201620448470.9U patent/CN205593971U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105866249A (en) * | 2016-05-17 | 2016-08-17 | 大连理工大学 | Embedded circular piezoceramic sensor |
| CN105866249B (en) * | 2016-05-17 | 2019-04-23 | 大连理工大学 | A kind of embedded annular piezoelectric ceramic sensor element |
| CN113552220A (en) * | 2021-08-13 | 2021-10-26 | 同济大学 | Reinforced concrete structure health monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160921 Effective date of abandoning: 20190423 |