CN110716233A

CN110716233A - Shallow stratum profiler prevents dragging instrument

Info

Publication number: CN110716233A
Application number: CN201910853009.XA
Authority: CN
Inventors: 徐国强; 金永德; 杜军; 李平; 王恩康
Original assignee: First Institute of Oceanography MNR
Current assignee: First Institute of Oceanography MNR
Priority date: 2019-09-10
Filing date: 2019-09-10
Publication date: 2020-01-21

Abstract

The invention belongs to the technical field of submarine detection, and discloses a shallow stratum profiler dragging-prevention instrument which is provided with a dragging-prevention cover body; the side protective plates are welded and installed on two sides of the anti-dragging cover body; the front protection plate is welded and installed at the front part of the anti-dragging cover body, and two side edges of the front protection plate are welded and installed with the side protection plates; and the bottom protective plate is welded and arranged at the bottom of the anti-dragging cover body. The anti-dragging instrument for the shallow stratum profiler overcomes the defect that a raft frame and a rope are cultured on the sea surface to damage a seismic source of the shallow stratum profiler when the existing equipment works in a raft culture area, ensures that the equipment smoothly passes through a culture sea area, provides the working efficiency of ocean depth measurement, and ensures the safe work of the equipment under complex sea conditions such as the culture area and the like.

Description

Shallow stratum profiler prevents dragging instrument

Technical Field

The invention belongs to the technical field of submarine detection, and particularly relates to a drag-prevention instrument of a shallow stratum profiler.

Background

Currently, the current state of the art commonly used in the industry is such that:

the submarine shallow stratum profile detection is a geophysical method for continuously detecting underwater stratum structures and structures based on an acoustic principle, and is widely applied to marine engineering investigation due to high sensitivity and resolution, good continuity and capability of efficiently detecting geological features and distribution of the underwater stratum. In offshore measurement work, sea conditions are complex, particularly in raft culture areas, the existence of barriers such as culture raft frames and culture ropes has great influence on shallow stratum profilers, and serious consequences such as cable breakage and seismic source damage are caused if winding occurs.

In summary, the problems of the prior art are as follows:

the shallow stratum profiler is wound by barriers such as the culture raft frame and the culture ropes, and serious consequences such as cable breakage and seismic source damage can be caused.

The difficulty in solving the technical problems is as follows:

1. when the shallow stratum profiler works, a seismic source is generally kept 0.5m below the sea surface, so that the probe is easy to scrape when an obstacle exists on the sea surface.

2. The obstacles on the sea surface are various in types, and comprise fixed raft culture frames, floating balls and the like, as well as flow nets and ropes which move along with ocean currents, and if the obstacles higher than the seismic source are scraped or wound with the seismic source of the shallow stratum profiler, a ship cannot stop in time, so that power supply cables are broken and the seismic source elements are damaged.

3. The ship operability is very slow, the marine weather conditions are more complex and changeable compared with the land, wind, wave, flow, fog and the like can influence the ship navigation, the flexibility of the ship for avoiding obstacles is greatly reduced, the complex sea conditions can cause the fluctuation and displacement of the marine obstacles to be indefinite, sometimes the obstacles are pressed into the sea surface by waves, the ship navigation is not easy to find, and the ocean detection is greatly influenced.

The significance of solving the technical problems is as follows:

according to the anti-dragging device for the shallow stratum profiler, the seismic source part of the shallow stratum profiler is subjected to anti-dragging protection, so that the technical difficulty of investigation and survey of equipment in complex sea areas such as a dense culture area and the like and under complex sea conditions is solved, the working efficiency is improved, and the working scene of the shallow stratum profiler is greatly expanded; on the other hand, the anti-dragging equipment is light and firm, and can protect the seismic source main body of the shallow stratum profiler in multiple directions, so that the equipment safety is ensured when the instrument crosses over the offshore barrier, and the damage probability of the instrument is reduced.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a shallow stratum profiler dragging-prevention instrument.

The invention is realized in such a way that the anti-dragging instrument of the shallow stratum profiler is provided with an anti-dragging cover body;

the side protective plates are welded and installed on two sides of the anti-dragging cover body;

the front protection plate is welded and installed at the front part of the anti-dragging cover body, and two side edges of the front protection plate are welded and installed with the side protection plates;

and the bottom protective plate is welded and arranged at the bottom of the anti-dragging cover body.

Furthermore, the rear end of the anti-dragging cover body is fixedly provided with a lower fixing screw hole.

Furthermore, the upper end of the front protection plate is movably provided with a fixed rod, and the tail end of the fixed rod is fixedly provided with an upper fixing screw hole.

Further, the shallow stratum profiler anti-dragging instrument is connected with the ship body through a cable and a dragging rope, and the anti-dragging equipment is 0.5m in water.

In summary, the advantages and positive effects of the invention are: the anti-dragging instrument for the shallow stratum profiler overcomes the damage of a sea surface culture raft frame and a rope to a seismic source of the shallow stratum profiler when the existing equipment works in a raft culture area, ensures that the equipment smoothly passes through a culture sea area, improves the working efficiency of submarine shallow stratum profile detection, and ensures the safe work of the equipment under complex sea conditions such as the culture area and the like.

Drawings

Fig. 1 is a schematic structural diagram of a shallow profiler anti-drag instrument provided in an embodiment of the present invention.

Fig. 2 is a dense layout of a culture area in a south experimental area of the south island of fujian south.

Fig. 3 is a field configuration diagram of a shallow profiler anti-drag device provided by an embodiment of the invention.

In the figure: 1. a front protection plate; 2. a bottom protection plate; 3. a side protection plate; 4. a screw hole is fixed at the lower part; 5. fixing the rod; 6. the upper part is fixed with a screw hole; 7. anti-dragging cover body.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.

In order to solve the problems in the prior art, the present invention provides a shallow profiler dragging-prevention instrument, which is described in detail below with reference to fig. 1 to 3.

The invention aims to provide anti-dragging equipment for a shallow stratum profiler, which overcomes the damage of a sea surface culture raft frame and a rope to a seismic source of the shallow stratum profiler when the existing equipment works in a raft culture area, ensures that the equipment smoothly passes through a culture sea area, and provides the working efficiency of ocean depth measurement.

The shallow stratum profiler dragging prevention instrument is provided with a dragging prevention cover body 7, side protection plates 3 are welded and installed on two sides of the dragging prevention cover body 7, a front protection plate 1 is welded and installed on the front portion of the dragging prevention cover body 7, two side edges of the front protection plate 1 are welded and installed with the side protection plates 3, and a bottom protection plate 2 is welded and installed on the bottom of the dragging prevention cover body 7.

When the device works, a seismic source towing body of the shallow stratum profiler is placed into the anti-towing cover body 7, the lower part of the device is fixed through four lower part fixing screw holes 4, the upper part of the device is fixed with an upper part fixing screw hole 6 through the tail part of a fixing rod 5, the whole anti-towing device is connected with a ship body through a cable and a towing rope, the towing mode is adopted for measurement, and the whole anti-towing device is about 0.5m submerged. When the survey ship works, if the survey ship meets a sea surface rope and a culture raft frame, the dragging prevention parts at the front end and the bottom of the dragging prevention cover body 7 can ensure that a seismic source of the shallow stratum profiler can smoothly pass through, and the detection precision and the equipment safety are ensured.

As shown in figure 2, the culture areas in the south experimental area of a certain island in Fujian are densely distributed, which greatly influences the field measurement. Therefore, the anti-drag device for the shallow profiler is designed (the field assembly diagram is shown in figure 3), and the propeller of the ship is protected against scraping, so that the ship can sail smoothly. In the field measurement work, a seismic source provided with an anti-dragging device is placed into the sea from the rear of a ship and is fixed with a ship body through a dragging rope. When the earthquake-proof device passes through the culture area, the speed and the course of the ship are ensured to be stable at a constant speed as much as possible, the front end of the anti-dragging device is generally 0.5m higher than the water surface, and the earthquake source can be ensured to pass through the barrier smoothly. Meanwhile, the acquired data is stable and reliable, and the requirements of later-stage research are met.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. The shallow stratum profiler dragging-prevention instrument is characterized in that the shallow stratum profiler dragging-prevention instrument is provided with a dragging-prevention cover body;

2. The shallow profiler anti-drag instrument as claimed in claim 1, wherein the back end of the anti-drag cover body is fixedly mounted with a lower fixing screw hole.

3. The shallow profiler dragging-prevention instrument as claimed in claim 1, wherein the upper end of the front protection plate is movably mounted with a fixing rod, the end of which is fixedly mounted with an upper fixing screw hole.

4. The shallow profiler anti-drag instrument as claimed in claim 1, wherein the shallow profiler anti-drag instrument is connected to the hull via cables and drag lines, and the anti-drag device is submerged 0.5 m.