CN207799094U - A kind of piezoelectric type acceleration type wave detector movement - Google Patents
A kind of piezoelectric type acceleration type wave detector movement Download PDFInfo
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- CN207799094U CN207799094U CN201820222971.4U CN201820222971U CN207799094U CN 207799094 U CN207799094 U CN 207799094U CN 201820222971 U CN201820222971 U CN 201820222971U CN 207799094 U CN207799094 U CN 207799094U
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Abstract
The utility model discloses a kind of piezoelectric type acceleration type wave detector movements, including pedestal, sensor mount, piezoelectric transducer stack of laminations, mass block, locking cylinder, shell, wiring board and head cover.Sensor mount is installed vertically on pedestal, and mass block, piezoelectric transducer stack of laminations are fastened on sensor mount by locking cylinder；Wiring board is installed on sensor mount top, and lead terminal and piezoelectric transducer stack of laminations electrode on head cover are connected by conducting wire, and signal processing and output signal are carried out to obtain power supply；Shell is by pedestal, sensor mount and top closure at an entirety.The wave detector movement does not have any spring mechanism, has the characteristics that simple in structure, sturdy and durable, high sensitivity, frequency characteristic are good, installation and debugging are convenient, and the geophone technical indicator needed for Exploration Domain may be implemented, and meets exploration construction needs.
Description
Technical field
The utility model belongs to field of seismic exploration, and in particular to a kind of piezoelectric type acceleration type wave detector movement.
Background technology
Wave detector is the indispensable elemental device of field of seismic exploration, directly affects the measurement and acquisition of seismic wave, mesh
The preceding geophone used in the industry is mainly based on velocity profile moving-coil type movement.Traditional moving-coil type movement is due to self structure
The characteristics of, low-frequency cut-off frequency is difficult to do low, and mostly in 10Hz or more, while alias is relatively low, is always denouncing for physical prospecting field.
Existing piezoelectric detector cassette mechanism structure is mostly to be formed with mass block, elastic copper sheet and piezoelectric ceramic piece in the industry
Acceleration type sensor drives piezoelectric ceramic piece Bending Deformation to generate electric signal with mass block compressing elastic copper sheet.Due to quality
Block constitutes an elastomer with elastic copper sheet, and performance indicator not only depends on mass block weight and piezoelectric ceramics piece performance,
It being influenced by elastic copper sheet, original sensitivities, low-frequency cut-off frequency, resonant frequency index and impact resistance improvement become difficult,
Often improve one of index, index in addition will obviously be deteriorated, though therefore this piezoelectric detector be born for many years,
But it is difficult to promote.
Utility model content
The purpose of this utility model provides a kind of without any spring mechanism aiming at defect of the existing technology
Piezoelectric type acceleration type wave detector movement.
The technical solution of the utility model is：A kind of piezoelectric type acceleration type wave detector movement is installed by pedestal, sensor
Frame, piezoelectric transducer stack of laminations, mass block, locking cylinder, shell, head cover, wiring board composition, sensor mount are vertically mounted on
On pedestal, mass block, piezoelectric transducer stack of laminations are fastened on sensor mount by locking cylinder；Wiring board is mounted on sensing
Device mounting bracket top connects lead terminal on piezoelectric transducer stack of laminations electrode and head cover by conducting wire；Shell by pedestal, sensing
Device mounting bracket and top closure are at an entirety.
By said program, the wave detector movement is solid-state structure, without any spring mechanism.
By said program, the piezoelectric transducer stack of laminations is sequentially overlapped by metal electrode and piezoelectric ceramic piece, there is 2
Group or more, structural behaviour are identical；Signal lead-out mode is divided into 1 road and two kinds of 2 tunnels lead-out mode, and 1 route is respectively adopted
Road plate and 2 tunnel differential type wiring boards carry out signal condition.
By said program, the sensor mount and mass block radially have 2 or more mutual corresponding mounting surfaces,
For installing piezoelectric transducer stack of laminations；Mass block is cut from end face along central symmetry according to mounting surface quantity, forms split-type
Structure；Mass block effective weight be mass block and locking cylinder weight and, by locking cylinder by pressing force by mass block, piezoelectric sensing
Device stack of laminations is tightly pressed on sensor mount.
By said program, the wiring board connects piezoelectric transducer stack of laminations electrode by conducting wire, obtains sensor signal
It is handled, and is wired to lead terminal on head cover, to obtain power supply and output signal.
By said program, the head cover is Wiring circuit board, is sealed for upper cover, is connected by lead terminal on head cover outer
Portion's power supply, signal cable and wiring board.
Compared with prior art, the wave detector of the utility model has the following advantages：
Wave detector movement provided by the utility model is solid-state structure, without any spring mechanism, is had simple in structure, hard
Gu durable feature.
Wave detector movement provided by the utility model is by the extensional vibration from outside by mass block in the form of shearforce
It acts in piezoelectric transducer stack of laminations, the charge that each piezoelectric ceramic piece generates by electrode and is unified into total electrical charge；From cross
To vibration piezoelectric ceramics on piece can only be acted on by pressure, this power not only differs with the sensitive direction of piezoelectric ceramic piece
It causes, also much smaller than locking cylinder by pressing force, therefore the signal generated is minimum.Therefore, longitudinal sensitivity is not only substantially increased,
Cross sensitivity index is improved, highly sensitive, extremely low low-frequency cut-off frequency is formd and higher resonant frequency is ideal
Wave detector movement, performance have not exceeded only traditional moving-coil geophone, directly chase after digital wave detector, and possess cost yet
Advantage.
Wave detector movement provided by the utility model basis sensitivity depends on mass block effective weight and piezoelectric transducer
The performance and quantity of piezoelectric ceramic piece in stack of laminations, by reasonably selecting mass block effective weight and piezoelectric transducer stack of laminations
In piezoelectric ceramic piece performance and quantity, improve movement sensitivity, realize Exploration Domain needed for geophone technology refer to
Mark, to meet to exploration construction needs.
Description of the drawings
Fig. 1 is the piezoelectric type acceleration type wave detector movement schematic cross-sectional view of the utility model.
Fig. 2 is the piezoelectric transducer stack of laminations schematic cross-sectional view of the utility model.
Fig. 3 is the piezoelectric type acceleration type wave detector movement of the utility model（2 groups）It bows and cuts open structural schematic diagram.
Fig. 4 is the piezoelectric type acceleration type wave detector movement of the utility model（3 groups）It bows and cuts open structural schematic diagram.
Fig. 5 is the piezoelectric type acceleration type wave detector movement of the utility model（4 groups）It bows and cuts open structural schematic diagram.
Fig. 6 is the 1 road signal lead-out mode circuit diagram of the utility model.
Fig. 7 is the 2 road signal lead-out mode circuit diagrams of the utility model.
Specific implementation mode
The utility model is described in further detail with reference to specific embodiment, described is to the utility model
Explanation rather than limit.
Referring to Fig. 1, a kind of piezoelectric type acceleration type wave detector movement, by pedestal 1, sensor mount 2, piezoelectric transducer
Stack of laminations 3, mass block 4, locking cylinder 5, shell 6, wiring board 7, head cover 8 form, and sensor mount 2 is vertically mounted on pedestal 1
On, mass block 4, piezoelectric transducer stack of laminations 3 are fastened on sensor mount 2 by locking cylinder 5；Wiring board 7 is installed on biography
2 top of sensor mounting bracket connects lead terminal on 3 electrode of piezoelectric transducer stack of laminations and head cover 8 by conducting wire；Shell 6 is by base
Seat 1, sensor mount 2 and the closing of head cover 8 are at an entirety.
The wave detector movement is solid-state structure, without any spring mechanism.
Different for the quantity of piezoelectric transducer stack of laminations 3, signal lead-out mode is divided into 1 road and two kinds of 2 tunnels lead-out mode,
1 road wiring board 7 is respectively adopted and 2 tunnel differential type wiring boards 7 carry out signal condition.
Mass block 4 is cut from end face along central symmetry according to mounting surface quantity, forms split-type structure；Mass block 4 is effective
Weight be mass block 4 and 5 weight of locking cylinder and, by locking cylinder 5 by pressing force by mass block 4, piezoelectric transducer stack of laminations 3 tightly
Tight is pressed in 2 on sensor mount.
Wiring board 7 connects 3 electrode of piezoelectric transducer stack of laminations by conducting wire, obtains sensor signal and is handled；Circuit
Plate 7 is wired to lead terminal on head cover 8, to obtain power supply and output signal.Head cover 8 is Wiring circuit board, is used for
Upper cover seals, and passes through terminal connecting line road plate 7, external power supply and the signal cable on head cover 8.
Referring to Fig. 2, piezoelectric transducer stack of laminations 3 is sequentially overlapped by metal electrode 3-1 and piezoelectric ceramic piece 3-2.
Referring to Fig. 3, piezoelectric transducer stack of laminations 3 has 2 groups, ensures that its structural behaviour is identical；2 He of sensor mount
Mass block 4 is radial 2 mutual corresponding mounting surfaces, for installing piezoelectric transducer stack of laminations 3.
Referring to Fig. 4, piezoelectric transducer stack of laminations 3 has 3 groups, ensures that its structural behaviour is identical；2 He of sensor mount
Mass block 4 is radial 3 mutual corresponding mounting surfaces, for installing piezoelectric transducer stack of laminations 3.
Referring to Fig. 5, piezoelectric transducer stack of laminations 3 has 4 groups, ensures that its structural behaviour is identical；2 He of sensor mount
Mass block 4 is radial 4 mutual corresponding mounting surfaces, for installing piezoelectric transducer stack of laminations 3.
Referring to Fig. 6, wave detector movement selects 1 road signal lead-out mode, and all piezoelectric transducer stack of laminations 3 are in parallel, using 1
Road wiring board 7 carries out signal condition.
Referring to Fig. 7, wave detector movement selects 2 road signal lead-out modes, and it is two groups that all piezoelectric transducer stack of laminations 3, which are divided to,
Every group of piezoelectric transducer stack of laminations 3 is in parallel, and signal condition is carried out using 2 tunnel differential type wiring boards 7.
Performance and mounting means limitation of the past due to being limited by piezoelectric ceramic piece, basic sensitivity is poor, fails to answer
For Weak absorption.Wave detector movement provided by the utility model is using more mounting surface sensor mounts 2, piezoelectric sensing
Device stack of laminations 3, split-type mass block 4 and locking cylinder 5 design, by the extensional vibration from outside by mass block 4 with shearforce
Form acts in piezoelectric transducer stack of laminations 3, and the charge that each piezoelectric ceramic piece generates by electrode and is unified into total electrical charge, and
Can only act on piezoelectric ceramics on piece by pressure from lateral vibration, this power not only with the sensitive direction of piezoelectric ceramic piece
Inconsistent, also much smaller than locking cylinder by pressing force, therefore the signal generated is minimum.Therefore, it not only substantially increases longitudinal sensitive
Degree, also improves its cross sensitivity index, forms highly sensitive, extremely low low-frequency cut-off frequency and higher resonant frequency
Ideal wave detector movement, performance have not exceeded only traditional moving-coil geophone, have directly chased after digital wave detector, and gather around yet
There is cost advantage.
By reasonably select the piezoelectric ceramic piece in 4 effective weight of mass block and piezoelectric transducer stack of laminations 3 performance and
Quantity improves movement sensitivity.
Wave detector movement provided by the utility model have simple in structure, sturdy and durable, high sensitivity, frequency characteristic it is good,
The geophone technical indicator needed for Exploration Domain may be implemented in feature at low cost, to meet to exploration construction needs.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement.Such as piezoelectric transducer stack of laminations 3 has 5 groups or more, ensures that its structural behaviour is identical；Sensor mount 2
There are 5 or more mutual corresponding mounting surfaces with 4 radial direction of mass block, for installing piezoelectric transducer stack of laminations 3.These variations
It is both fallen in claimed the scope of the utility model with improving.The utility model requires protection scope by claims and
Its equivalent thereof.
Claims (5)
1. a kind of piezoelectric type acceleration type wave detector movement, by pedestal, sensor mount, piezoelectric transducer stack of laminations, quality
Block, locking cylinder, shell, wiring board, head cover composition, it is characterized in that：Sensor mount is vertically mounted on pedestal, by locking cylinder
Mass block, piezoelectric transducer stack of laminations are fastened on sensor mount；Wiring board is installed on sensor mount top, leads to
Cross lead terminal on conducting wire connection piezoelectric transducer stack of laminations electrode and head cover；Shell is by pedestal, sensor mount and head cover
Close into an entirety.
2. piezoelectric type acceleration type wave detector movement according to claim 1, it is characterized in that：Sensor mount and quality
Block radially has 2 or more mutual corresponding mounting surfaces, for installing piezoelectric transducer stack of laminations；Mass block is according to mounting surface
Quantity is cut from end face along central symmetry, and split-type structure is formed；Mass block effective weight be mass block and locking cylinder weight and,
Mass block, piezoelectric transducer stack of laminations are tightly pressed on sensor mount by pressing force by locking cylinder.
3. piezoelectric type acceleration type wave detector movement according to claim 1, it is characterized in that：Piezoelectric transducer stack of laminations by
Metal electrode and piezoelectric ceramic piece are sequentially overlapped, and have 2 groups or more；Signal lead-out mode is divided into 1 road and the extraction of two kinds of 2 tunnels
Mode, is respectively adopted 1 road wiring board and 2 tunnel differential type wiring boards carry out signal condition.
4. piezoelectric type acceleration type wave detector movement according to claim 1, it is characterized in that：Wiring board is connected by conducting wire
Piezoelectric transducer stack of laminations electrode obtains sensor signal and is handled；Wiring board is wired to lead end on head cover
Son, to obtain power supply and output signal.
5. piezoelectric type acceleration type wave detector movement according to claim 1, it is characterized in that：Head cover is Wiring circuit board,
It is sealed for upper cover, connection external power supply, signal cable and wiring board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820222971.4U CN207799094U (en) | 2018-02-08 | 2018-02-08 | A kind of piezoelectric type acceleration type wave detector movement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820222971.4U CN207799094U (en) | 2018-02-08 | 2018-02-08 | A kind of piezoelectric type acceleration type wave detector movement |
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| CN207799094U true CN207799094U (en) | 2018-08-31 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109725174A (en) * | 2019-03-07 | 2019-05-07 | 中国船舶重工集团公司第七0四研究所 | Composite vibrating acceleration transducer |
| CN110133711A (en) * | 2018-02-08 | 2019-08-16 | 东营市智威石油技术有限责任公司 | A kind of piezoelectric type acceleration type wave detector machine core |
| CN111722271A (en) * | 2019-03-21 | 2020-09-29 | 中石化石油工程技术服务有限公司 | Annular cantilever beam piezoelectric wave detector core |
-
2018
- 2018-02-08 CN CN201820222971.4U patent/CN207799094U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110133711A (en) * | 2018-02-08 | 2019-08-16 | 东营市智威石油技术有限责任公司 | A kind of piezoelectric type acceleration type wave detector machine core |
| CN109725174A (en) * | 2019-03-07 | 2019-05-07 | 中国船舶重工集团公司第七0四研究所 | Composite vibrating acceleration transducer |
| CN109725174B (en) * | 2019-03-07 | 2024-04-30 | 中国船舶重工集团公司第七0四研究所 | Composite vibration acceleration sensor |
| CN111722271A (en) * | 2019-03-21 | 2020-09-29 | 中石化石油工程技术服务有限公司 | Annular cantilever beam piezoelectric wave detector core |
| CN111722271B (en) * | 2019-03-21 | 2023-06-30 | 中石化石油工程技术服务有限公司 | Annular cantilever piezoelectric detector core |
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