发明名称 |
Seismic pulse generation. |
摘要 |
An acoustic wave energy generator comprises a body having an internal gas-pressurisable first chamber 1 adjoining a second chamber 2 into which a liquid is introduced to cover a vibratable means 4 which may be a flexible diaphragm and is mounted on the second chamber so as to close an associated opening 5 in the second chamber. After the first chamber 1 is pressurised with a first gas a common closed opening between the chambers is opened to cause communication between the chambers 1,2 to permit a shock wave emanating from the first chamber to impinge on the liquid. As a result, the vibratable means 4 is caused to vibrate so as to produce acoustic wave energy in response to the impingement of the shock wave on the liquid. By using different liquids and/or different heights of liquids in the second chamber the generator may be tuned to provide acoustic wave energy with a relatively narrow chosen frequency range or within a chosen substantially single frequency.
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申请公布号 |
EP0393881(A2) |
申请公布日期 |
1990.10.24 |
申请号 |
EP19900303645 |
申请日期 |
1990.04.05 |
申请人 |
BRITISH GAS PLC |
发明人 |
THOMAS, KEITH MARCUS;DONGWORTH, MICHAEL ROY;MELVIN, ALEC |
分类号 |
G01V1/02;G01V1/133;G01V1/135 |
主分类号 |
G01V1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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