CN110307896B - Hydrophone suspension system for ship underwater radiation noise measurement and laying method - Google Patents
Hydrophone suspension system for ship underwater radiation noise measurement and laying method Download PDFInfo
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- CN110307896B CN110307896B CN201910505140.7A CN201910505140A CN110307896B CN 110307896 B CN110307896 B CN 110307896B CN 201910505140 A CN201910505140 A CN 201910505140A CN 110307896 B CN110307896 B CN 110307896B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B35/00—Vessels or similar floating structures specially adapted for specific purposes and not otherwise provided for
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/40—Correcting position, velocity or attitude
- G01S19/41—Differential correction, e.g. DGPS [differential GPS]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/38—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
- G01S19/39—Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system the satellite radio beacon positioning system transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/42—Determining position
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The invention relates to a suspension system and a distribution method of a ship underwater radiation noise measurement hydrophone, which comprises an equipment accommodating mechanism, a vibration damping mechanism and a measurement mechanism, wherein the equipment accommodating mechanism comprises a main buoy, an equipment installation set-top box and a main buoy load-bearing weight block, a main connecting rod is arranged in the center of the main buoy in a penetrating way, the top end of the main connecting rod is connected with the equipment installation set-top box, and the bottom end of the main connecting rod is connected with the main buoy load-bearing weight block through a main rope; the vibration reduction mechanism comprises a vibration reduction buoy and a vibration reduction pressure load-carrying object block, a vibration reduction connecting rod penetrates through the center of the vibration reduction buoy, and the top end of the vibration reduction buoy is connected with the main rope through an elastic rope; the measuring mechanism comprises a hydrophone, a support and a floating ball, the hydrophone is connected with the support, the floating ball is connected to the top end of the support, the support is connected with a vibration reduction rope through an elastic rope, and the hydrophone is connected with the equipment installation set-top box through a cable. The invention is easy to lay, has strong anti-interference capability and accurate measurement.
Description
Technical Field
The invention belongs to the technical field of ship underwater radiation testing, and particularly relates to a ship underwater radiation noise measurement hydrophone suspension system and a distribution method.
Background
The hydrophone suspension system is used for installing the ship underwater radiation noise measurement hydrophone, and is used for isolating interference of vibration noise of the ocean storm environment on the measurement hydrophone and ensuring the correctness of test data.
With the development of ship underwater radiation noise measurement certification and classification work of China Classification Society (CCS), the underwater radiation noise test of civil ships is more and more extensive. The measurement suspension systems used in CCS "guidance on underwater radiation noise for ships" and the related national military standards are currently the most common, and are schematically shown in fig. 1.
The system shown in fig. 1 has the following disadvantages for civil ship underwater radiation noise measurement:
1) the system is easy to generate interference under the action of wind waves and water flow
A signal cable with a hydrophone suspended at the tail end in the system is finally connected to a measuring ship through a floating cable, and the floating cable fluctuates under the action of sea surface waves to generate interference on the measuring hydrophone; meanwhile, relative movement and acting force exist between the suspension system and the measuring ship under the action of wind and current, and a system cable and a traction rope are easy to shake under the impact of water current. The vibration can be transmitted to the measuring hydrophone, so that the measuring result contains underwater acoustic signals which do not belong to the characteristics of the ship to be measured, and even the test result is distorted in severe cases;
2) the system is complex and the offshore arrangement is difficult
The wind wave interference introduced by the floating cable can be eliminated by measures such as floating balls and uneven cable arrangement, but the technical requirement is high, the length of the floating cable is long, the system is complex, and the offshore arrangement is difficult;
3) the suspension system has high requirement on the distance measuring system and is complicated to install
The distance between the hydrophone at the tail end of the suspension system and the floating ball is 10m in the horizontal direction, if a system for measuring the position of the floating ball is adopted for distance measurement in a test, the distance measurement error is 10m, and the error introduced when the distance is corrected by a measurement result is large. In order to accurately measure the distance, an underwater distance measuring system is required to be adopted when the suspension system carries out underwater sound measurement of the water surface ship, and the requirement on the distance measuring system is high; meanwhile, the ship to be measured needs to be docked respectively before and after measurement to carry out the installation and disassembly work of the distance measuring system, and the workload is increased.
Disclosure of Invention
The invention aims to provide a hydrophone suspension system for measuring the underwater radiation noise of a ship and a laying method thereof aiming at the technical requirements, so that the hydrophone suspension system has small wind wave interference, eliminates the low-frequency jitter of a floating cable, can be used for testing a low-frequency line spectrum above 10Hz, and is convenient to lay on the sea.
In order to achieve the purpose, the invention adopts the following technical scheme: a hydrophone suspension system for ship underwater radiation noise measurement is characterized by comprising an equipment accommodating mechanism, a vibration damping mechanism and a measuring mechanism, wherein the equipment accommodating mechanism comprises a main buoy, an equipment installation set-top box and a main buoy load-bearing weight block, a main connecting rod penetrates through the center of the main buoy, the top end of the main connecting rod is connected with the equipment installation set-top box, and the bottom end of the main connecting rod is connected with the main buoy load-bearing weight block through a main rope; the damping mechanism comprises a damping buoy and a damping pressure load-carrying object block, a damping connecting rod penetrates through the center of the damping buoy, and the top end of the damping connecting rod is connected with the main rope through an elastic rope; the measuring mechanism comprises a hydrophone, a support and a floating ball, the hydrophone is connected with the support, the top end of the support is connected with the floating ball, the support is connected with the vibration reduction rope through an elastic rope, and the hydrophone is connected with the equipment installation set-top box through a cable.
According to the scheme, the equipment installation set-top box comprises a containing box body, a hydrophone data acquisition instrument, a differential positioning system measuring instrument, a direct-current power supply and a wireless transmission device, wherein the hydrophone data acquisition instrument, the differential positioning system measuring instrument, the direct-current power supply and the wireless transmission device are arranged in the containing box body.
According to the scheme, the cable is wound on the main rope and the damping rope respectively, and floating balls are arranged at intervals on the part of the cable which is not wound.
A distribution method of a ship underwater radiation noise measurement hydrophone suspension system is characterized by comprising the following steps:
s1) carrying out system debugging on the hydrophone, the hydrophone data acquisition instrument, the differential positioning system measuring instrument, the direct-current power supply and the wireless transmission device;
s2) performing heeling, pitching and neutral buoyancy balance and adjustment on the whole suspension system in a laboratory water pool or at a test sea area wharf or at sea according to actual buoyancy difference;
s3) the suspension system is disassembled according to the mechanism, the suspension system is transported to a measuring ship and then reassembled, and the measuring ship stops when reaching a measuring sea area;
s4) throwing the hydrophone and the bracket into the sea, enabling the bracket to float downstream, throwing the vibration reduction buoy into the sea, slowly putting down the vibration reduction pressure load-carrying object blocks, observing the water inlet condition of the hydrophone and the bracket, and finally utilizing lifting equipment to lift the main buoy, the equipment installation set-top box and the main buoy pressure load-carrying object blocks into the water to complete the arrangement of a suspension system;
s5), carrying out system debugging on the instrument equipment, carrying out test sea area water wave environment measurement, and carrying out ship underwater radiation noise measurement operation after the system debugging is normal.
The invention has the beneficial effects that: the hydrophone suspension system for measuring the underwater radiation noise of the ship and the arrangement method thereof are provided, the design scheme of a full floating type system is adopted, the interference of a floating cable caused by the fluctuation of waves is eliminated, secondary vibration reduction and damping components are adopted to improve the effect of eliminating the interference of wind wave noise of the system, the inherent frequency of the system is lower than 5Hz, the measurement range of the underwater sound low-frequency line spectrum of the system is expanded, and the hydrophone suspension system can be used for testing the low-frequency line spectrum above 10 Hz; the complexity of the system is reduced, and offshore distribution is facilitated; the requirement on a distance measuring system is reduced, and the differential positioning system equipment can be adopted for positioning and measuring the distance under the condition of meeting the precision.
Drawings
Fig. 1 is a schematic diagram of a conventional measurement hydrophone suspension system.
FIG. 2 is a schematic deployment view of one embodiment of the present invention.
Wherein: 1. the device comprises a main buoy, 2, a device installation set-top box, 3, a main buoy load-bearing object block, 4, a main connecting rod, 5, a main rope, 6, a damping buoy, 7, a damping load-bearing object block, 8, a damping connecting rod, 9, an elastic rope, 10, a hydrophone, 11, a support, 12, a floating ball, 13, a cable and 14, a damping rope.
Detailed Description
The embodiments of the present invention will now be described with reference to the accompanying drawings, and the present invention is not limited to the following examples.
As shown in fig. 2, the suspension system for the ship underwater radiation noise measurement hydrophone comprises an equipment accommodating mechanism, a vibration damping mechanism and a measurement mechanism, wherein the equipment accommodating mechanism comprises a main buoy 1, an equipment installation set-top box 2 and a main buoy load-bearing block 3, a main connecting rod 4 penetrates through the center of the main buoy, the top end of the main connecting rod is connected with the equipment installation set-top box, and the bottom end of the main connecting rod is connected with the main buoy load-bearing block through a main rope 5; the damping mechanism comprises a damping buoy 6 and a damping ballast weight block 7, a damping connecting rod 8 penetrates through the center of the damping buoy, and the top end of the damping connecting rod is connected with the main rope through an elastic rope 9; the measuring mechanism comprises a hydrophone 10, a support 11 and a floating ball 12, the hydrophone is connected with the support, the floating ball is connected with the top end of the support, the support is connected with a damping rope 14 through an elastic rope, and the hydrophone is connected with the equipment installation set-top box through a cable 13.
The equipment installation set-top box comprises a containing box body, a hydrophone data acquisition instrument, a differential positioning system measuring instrument, a direct current power supply and a wireless transmission device, wherein the hydrophone data acquisition instrument, the differential positioning system measuring instrument, the direct current power supply and the wireless transmission device are arranged in the containing box body.
The cable is respectively wound on the main rope and the damping rope, and floating balls are arranged at intervals on the part of the cable which is not wound.
The arrangement method of the suspension system comprises the following steps:
s1) carrying out system debugging on the hydrophone, the hydrophone data acquisition instrument, the differential positioning system measuring instrument, the direct-current power supply and the wireless transmission device;
s2) performing heeling, pitching and neutral buoyancy balance and adjustment on the whole suspension system in a laboratory water pool or at a test sea area wharf or at sea according to actual buoyancy difference;
s3) the suspension system is disassembled according to the mechanism, the suspension system is transported to a measuring ship and then reassembled, and the measuring ship stops when reaching a measuring sea area;
s4) throwing the hydrophone and the bracket into the sea, enabling the bracket to float downstream, throwing the vibration reduction buoy into the sea, slowly putting down the vibration reduction pressure load-carrying object blocks, observing the water inlet condition of the hydrophone and the bracket, and finally utilizing lifting equipment to lift the main buoy, the equipment installation set-top box and the main buoy pressure load-carrying object blocks into the water to complete the arrangement of a suspension system;
s5), carrying out system debugging on the instrument equipment, carrying out test sea area water wave environment measurement, and carrying out ship underwater radiation noise measurement operation after the system debugging is normal.
Claims (3)
1. A hydrophone suspension system for ship underwater radiation noise measurement is characterized by comprising an equipment accommodating mechanism, a vibration damping mechanism and a measuring mechanism, wherein the equipment accommodating mechanism comprises a main buoy, an equipment installation set-top box and a main buoy load-bearing weight block, a main connecting rod penetrates through the center of the main buoy, the top end of the main connecting rod is connected with the equipment installation set-top box, and the bottom end of the main connecting rod is connected with the main buoy load-bearing weight block through a main rope; the damping mechanism comprises a damping buoy and a damping pressure load-bearing weight block, a damping connecting rod penetrates through the center of the damping buoy, the top end of the damping connecting rod is connected with the main rope through an elastic rope, and the bottom end of the damping connecting rod is connected with the damping pressure load-bearing weight block through a damping rope; the measuring mechanism comprises a hydrophone, a support and a floating ball, the hydrophone is connected with the support, the top end of the support is connected with the floating ball, the support is connected with the vibration reduction rope through an elastic rope, the hydrophone is connected with the equipment installation set-top box through a cable, the cable is wound on the main rope and the vibration reduction rope respectively, and the floating ball is arranged at intervals of the part, which is not wound, of the cable.
2. The suspension system for the marine underwater radiation noise measurement hydrophone according to claim 1, wherein the equipment installation set-top box comprises a containing box body, and a hydrophone data acquisition instrument, a differential positioning system measuring instrument, a direct-current power supply and a wireless transmission device which are arranged in the containing box body.
3. The method for deploying the underwater radiation noise measurement hydrophone suspension system for the ship as claimed in claim 2, is characterized by comprising the following steps:
s1) carrying out system debugging on the hydrophone, the hydrophone data acquisition instrument, the differential positioning system measuring instrument, the direct-current power supply and the wireless transmission device;
s2) performing heeling, pitching and neutral buoyancy balance and adjustment on the whole suspension system in a laboratory water pool or at a test sea area wharf or at sea according to actual buoyancy difference;
s3) the suspension system is disassembled according to the mechanism, the suspension system is transported to a measuring ship and then reassembled, and the measuring ship stops when reaching a measuring sea area;
s4) throwing the hydrophone and the bracket into the sea, enabling the bracket to float downstream, throwing the vibration reduction buoy into the sea, slowly putting down the vibration reduction pressure load-carrying object blocks, observing the water inlet condition of the hydrophone and the bracket, and finally utilizing lifting equipment to lift the main buoy, the equipment installation set-top box and the main buoy pressure load-carrying object blocks into the water to complete the arrangement of a suspension system;
s5), carrying out system debugging on the instrument equipment, carrying out test sea area water wave environment measurement, and carrying out ship underwater radiation noise measurement operation after the system debugging is normal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910505140.7A CN110307896B (en) | 2019-06-12 | 2019-06-12 | Hydrophone suspension system for ship underwater radiation noise measurement and laying method |
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| CN201910505140.7A CN110307896B (en) | 2019-06-12 | 2019-06-12 | Hydrophone suspension system for ship underwater radiation noise measurement and laying method |
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| CN110307896A CN110307896A (en) | 2019-10-08 |
| CN110307896B true CN110307896B (en) | 2021-08-06 |
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| CN110823490B (en) * | 2019-11-20 | 2021-05-11 | 哈尔滨工程大学 | Comprehensive guarantee platform for underwater explosion test of submersible vehicle model |
| CN111169608B (en) * | 2020-01-09 | 2021-06-18 | 哈尔滨工程大学 | Offshore dock for measuring underwater radiation noise of ship |
| CN114018396A (en) * | 2021-10-22 | 2022-02-08 | 中国舰船研究设计中心 | Low-frequency underwater sound measurement system and layout method |
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