CN2439034Y - Terrestrial piezoelectric ceramic seismic detector - Google Patents
Terrestrial piezoelectric ceramic seismic detector Download PDFInfo
- Publication number
- CN2439034Y CN2439034Y CN 00226749 CN00226749U CN2439034Y CN 2439034 Y CN2439034 Y CN 2439034Y CN 00226749 CN00226749 CN 00226749 CN 00226749 U CN00226749 U CN 00226749U CN 2439034 Y CN2439034 Y CN 2439034Y
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- piezoelectric ceramics
- chip module
- holder
- piezoelectric ceramic
- piezoelectric
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Abstract
The utility model relates to a land pressure electric ceramic earthquake detector, which is composed of an upper cover, a housing, a core body, an impedance matching transformer, a leading cable, and a tail cone, wherein, the core body is composed of an inertia body, a pressure electric ceramic sheet component, a fixing seat, etc. When the detector is shook along with the land, the weight of the inertia body acted on the pressure electric ceramic sheet is changed due to the inertia effect to enable the pressure bore by the pressure electric ceramic sheet is also changed; the pressure electric ceramic sheet component converts the change of the pressure into corresponding electric signals, and the value and the acceleration forms a direct proportion; the signals are output through the impedance matching transformer. The utility model has the advantage of simple structure, which is suitable for earthquake exploration of land high resolution.
Description
The utility model belongs to the detector arrangement class, is meant the piezoelectric ceramics wave detector that the seismic prospecting of a kind of land is used especially.
At present, what generally use in seismic prospecting and seismic surveying is the wave detector of electromagnetic type structure, and its core body is that the magnetoelectricity conversion portion is to be made of magnet steel and the moving coil that is enclosed within the magnet steel outside.When the ground of embedding wave detector caused vibrations by focus, core body was promptly exported and is shaken relevant electric signal.Because the linear error and the coil of coil suspension are to move in non-uniform magnetic field, therefore can cause harmonic distortion, bigger to the high-frequency signal loss, and structure is comparatively complicated, fragile.
The purpose of this utility model is to provide the piezoelectric ceramics seismoreceiver that a kind of feature, high-frequency compensation simple in structure, that have acceleration detector are big, be suitable for land seismic prospecting use.
The utility model is realized as follows.
Seismoreceiver provided by the utility model is made up of loam cake, shell, outgoing cable, core body, impedance-matching transformer, tail cone, and wherein core body is to be made of coasting body, piezoelectric ceramics chip module, holder, sheath, overcoat, top cover.The piezoelectric ceramics chip module is to be made of two piezoelectric ceramic pieces and copper substrate, adopts the polarity series system, and the different surfaces of two piezoelectric ceramic pieces is bonded in respectively on two basal planes of substrate.The piezoelectric ceramics chip module is installed in the holder of being made by copper material, and the upper edge of substrate and holder welds together.The boss of coasting body bottom it of being made by copper material directly contacts with the surface of piezoelectric ceramic piece.When wave detector moves up and down with the earth vibrations, coasting body promptly produces relative displacement up and down in sheath, because inertia effect, the weight that acts on the coasting body on the piezoelectric ceramic piece changes, thereby the pressure that bears on the piezoelectric ceramic piece is also changed thereupon, the piezoelectric ceramics chip module is about to the pressure variation and converts corresponding electric signal to, and its numerical value is directly proportional with the acceleration of coasting body motion.Two electrical signals of piezoelectric ceramics chip module, the first are by directly drawing on the substrate, and the other end is to draw after the non-bonding plane short circuit by two piezoelectric ceramic pieces.The elementary of impedance-matching transformer directly links to each other with two signal output parts of piezoelectric ceramics chip module, thereby forms the signal output of the utility model seismoreceiver.
The utility model has following advantage.
Land provided by the utility model piezoelectric ceramics seismoreceiver, high-frequency compensation is big, and frequency range has the characteristic of acceleration detector greater than 400Hz, and simple in structure, and easily processing, assembling are applicable to land high resolution seismic prospecting.
Description of drawings.
Fig. 1 is the utility model general structure synoptic diagram.
Fig. 2 is the utility model core synoptic diagram.
Below in conjunction with accompanying drawing in detail the utility model embodiment is described in detail.
With reference to Fig. 1, the utility model seismoreceiver is made up of loam cake 1, outgoing cable 2, impedance-matching transformer 3, shell 4, tail cone 5, core body 6.Core body 6 and impedance-matching transformer 3 are encapsulated in the plastic casing 4 by loam cake 1, and cushioning effect is played with silicon rubber 7 fillings between core body 6 and the transformer 3 and gap between impedance-matching transformer 3 and shell 4 and the top cover 1.Impedance-matching transformer 3 elementary directly and the output line of core body 6 weld together, be connected to the damping resistance 8 of a suitable resistance between its secondary two ends and link to each other with two outgoing cables.Tail cone 5 is installed in the lower end of shell 4.
With reference to Fig. 2, core body 6 of the present utility model is made up of top cover 9, overcoat 10, sheath 11, coasting body 12, holder 14, piezoelectric ceramic piece assembly.Sheath 11 is encapsulated in the drum shape overcoat made from ferrous material 10 by top cover 9 with coasting body 12, holder 14, piezoelectric ceramics chip module.Wherein the piezoelectric ceramics chip module is to be made of the substrate 15 that two piezoelectric ceramic pieces 13 and copper material are made, and adopts the polarity series system, and the different surfaces of two piezoelectric ceramic pieces 13 is sticked with glue respectively on two basal planes that are connected on substrate 15.Piezoelectric ceramic piece can be circle, also can be arbitrary shape.The piezoelectric ceramics chip module is installed in the drum shape holder made from copper material 14, and substrate 15 welds together with the upper edge of holder 14, constitutes toot chamber 16 altogether between piezoelectric ceramics chip module and the holder 14.Cylindrical sheath made of plastic 11 is housed on the holder 14, and the cylindrical coasting body made from copper material 12 is positioned at sheath 11.The coasting body side respectively have the twice annular groove up and down, rubber o-ring 20 all is housed, its bottom is processed as a boss 17.Coasting body 12 directly contacts with the surface of piezoelectric ceramic piece 13 by boss 17, and boss 17 can be arbitrary shape, but the length of its xsect should be less than 1/2nd of coasting body 12 diameters.When wave detector moves up and down with the earth vibrations, coasting body 12 promptly produces relative displacement thereupon in sheath 11, because inertia effect, the weight that acts on the coasting body 12 on the piezoelectric ceramic piece 13 changes, thereby the pressure that bears on the piezoelectric ceramic piece 13 is also changed thereupon.The piezoelectric ceramics chip module is about to this pressure variation and converts electric signal to, and its numerical value is directly proportional with the acceleration of coasting body motion.Two output terminals of piezoelectric ceramic piece component electrical signal, the first are by directly drawing on the substrate 15, and the other end is to draw after by the not gluing of surfaces short circuit of the through wires hole 19 on holder 14 sides with two piezoelectric ceramic pieces 13 with insulated conductor.Metallic channel 18 and wire hole loam cake 9 on 21 of electric signal extension line by sheath 11 outsides directly welds together with the elementary of impedance-matching transformer 3, forms seismic signal of the present utility model thus and exports.
Claims (3)
1, a kind of land piezoelectric ceramics seismoreceiver, by loam cake (1), outgoing cable (2), impecance tansformer (3), shell (4), tail cone (5), core body (6) is formed, it is characterized in that core body (6) is by top cover (9), overcoat (10), sheath (11), coasting body (12), the piezoelectric ceramics chip module, holder (14) constitutes, sheath (11) and coasting body (12), the piezoelectric ceramics chip module, holder (14) is encapsulated in the drum shape overcoat made from ferrous material (10) by top cover (9) together, wherein the piezoelectric ceramics chip module is to be made of two piezoelectric ceramic pieces (13) and the substrate (15) made with copper material, adopt the polarity series system, the different surfaces of two piezoelectric ceramic pieces (13) is bonded in respectively on two basal planes of substrate (15), and the piezoelectric ceramics chip module is installed in the holder (14); The boss (17) of cylindrical coasting body (12) bottom it of being made by copper material directly contacts with the surface of piezoelectric ceramic piece (13), coasting body (12) is given birth to inertia displacement with the violent earthquake movable property, the pressure that bears on the piezoelectric ceramic piece (13) is also changed thereupon, the piezoelectric ceramics chip module is about to the pressure variation and converts electric signal to, the electrical signal extension line directly and elementary the welding together of impedance-matching transformer (3), secondary and two outgoing cables (2) of impedance-matching transformer (3) link.
2, land according to claim 1 piezoelectric ceramics seismoreceiver, the substrate (15) that it is characterized in that the piezoelectric ceramics chip module is that the upper edge with holder (14) welds together, and constitutes resonator (16) between piezoelectric ceramics chip module and the holder (14).
3, land according to claim 1 piezoelectric ceramics seismoreceiver, it is characterized in that the signal output of piezoelectric ceramics chip module, the one end is by directly drawing on the substrate (15), and the other end is with drawing after the not gluing of surfaces short circuit of through wires hole (19) with two piezoelectric ceramic pieces (13) of insulated conductor by holder (14) side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00226749 CN2439034Y (en) | 2000-08-24 | 2000-08-24 | Terrestrial piezoelectric ceramic seismic detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00226749 CN2439034Y (en) | 2000-08-24 | 2000-08-24 | Terrestrial piezoelectric ceramic seismic detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2439034Y true CN2439034Y (en) | 2001-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00226749 Expired - Lifetime CN2439034Y (en) | 2000-08-24 | 2000-08-24 | Terrestrial piezoelectric ceramic seismic detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2439034Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363753C (en) * | 2004-06-28 | 2008-01-23 | 陕西超波传感器有限责任公司 | Novel composite earthquake demodulator |
| CN100388009C (en) * | 2004-12-31 | 2008-05-14 | 朱军 | Core of piezoelectric acceleration seismic detector |
| CN104237934A (en) * | 2014-09-29 | 2014-12-24 | 中国地质大学 | Differential piezoelectric digital geophone |
| CN105223606A (en) * | 2015-09-06 | 2016-01-06 | 中国科学院地质与地球物理研究所 | Land piezoelectric seismometer core body |
| CN106291668A (en) * | 2016-07-25 | 2017-01-04 | 西安石油大学 | Micro logging/wave speed logging piezoelectricity system for acquiring seismic data |
| CN107870350A (en) * | 2017-12-13 | 2018-04-03 | 中国地质大学（武汉） | A kind of differential type bimorph geophone core body and piezoelectric seismometer |
| CN111811639A (en) * | 2020-05-25 | 2020-10-23 | 刘峙亚 | Ground wave monitoring equipment |
-
2000
- 2000-08-24 CN CN 00226749 patent/CN2439034Y/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100363753C (en) * | 2004-06-28 | 2008-01-23 | 陕西超波传感器有限责任公司 | Novel composite earthquake demodulator |
| CN100388009C (en) * | 2004-12-31 | 2008-05-14 | 朱军 | Core of piezoelectric acceleration seismic detector |
| CN104237934A (en) * | 2014-09-29 | 2014-12-24 | 中国地质大学 | Differential piezoelectric digital geophone |
| CN105223606A (en) * | 2015-09-06 | 2016-01-06 | 中国科学院地质与地球物理研究所 | Land piezoelectric seismometer core body |
| CN106291668A (en) * | 2016-07-25 | 2017-01-04 | 西安石油大学 | Micro logging/wave speed logging piezoelectricity system for acquiring seismic data |
| CN107870350A (en) * | 2017-12-13 | 2018-04-03 | 中国地质大学（武汉） | A kind of differential type bimorph geophone core body and piezoelectric seismometer |
| CN107870350B (en) * | 2017-12-13 | 2023-12-15 | 中国地质大学（武汉） | Differential dual-piezoelectric-patch geophone core and piezoelectric geophone |
| CN111811639A (en) * | 2020-05-25 | 2020-10-23 | 刘峙亚 | Ground wave monitoring equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFANG GEOPHYSICAL EXPLORATION CO., LTD., SINOP Free format text: FORMER OWNER: XI-AN PETROLEUM PROSPECTING INSTRUMENT GEN. FACTORY Effective date: 20061201 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061201 Address after: 072751 No. 189 Yang Xi Road, Zhuozhou, Hebei Patentee after: Dongfang Geophysical Exploration Co., Ltd., China Petrochemical Corp. Address before: 710061 in Shaanxi Province, the southern suburbs of Xi'an City, gongzhuan Road No. 8 Zhou Ping. Patentee before: Xian Petroleum Prospecting Instrument General Factory |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20100824 Granted publication date: 20010711 |