CN107132186B - Submarine sediment probe and detection method - Google Patents

Abstract

The invention relates to the technical field of submarine detection, aims to solve the problem of inaccurate detection results of a submarine sediment probe in the prior art, and provides the submarine sediment probe and a detection method. The submarine sediment probe comprises a tube shell and a detector. The outer peripheral surface of the cartridge has radially recessed grooves extending in the axial direction of the cartridge. And one end of the groove along the axial direction is a necking groove with a gradually reduced section. The tube shell is provided with a viewing window which is positioned at the smaller end of the cross section of the bottom surface of the necking slot. The detector is arranged in the tube shell and faces the observation window. The invention has the beneficial effects that the influence of seawater on detection can be avoided, so that the detector can directly and accurately detect sediment to obtain an accurate detection result.

Description

Seabed Sediment Probing Tube and Detection Method

technical field

The invention relates to the technical field of seabed detection, in particular to a seabed sediment probe and a detection method.

Background technique

Seabed sediment is an important part of the ocean, and it is the interface between seawater and the deep seabed. The study of seabed sediments can provide important information on the formation and storage conditions of seabed minerals such as petroleum. At the same time, seabed sediments are a good record of geological history and are of great significance for understanding the formation and evolution of the ocean. Therefore, more and more attention has been paid to the detection of seabed sediments. Optical detection is a common detection method.

However, the seawater between the seawater and the sediment will affect the result of optical detection, making the detection result inaccurate.

Contents of the invention

The invention aims to provide a seabed sediment probe to solve the problem of inaccurate detection results of the seabed sediment probe in the prior art.

Another object of the present invention is to provide a seabed sediment detection method equipped with the above seabed sediment probe.

Embodiments of the present invention are achieved like this:

An embodiment of the present invention provides a seabed sediment probe, which includes a shell and a detector. The outer peripheral surface of the tube shell has a radially concave groove, and the groove extends along the axial direction of the tube shell. And one end of the groove along its axial direction is a shrinking groove whose cross-section gradually decreases. The pipe shell has a viewing window, and the viewing window is located at the smaller end of the section of the groove bottom of the shrinking groove. The detector is arranged in the casing and faces the viewing window.

The method of using the seabed sediment probe in the embodiment of the present invention is to pull the seabed sediment probe pressed on the seabed sediment, so that the seabed sediment probe moves on the seabed sediment layer. During the movement of the seabed sediment probe tube, the detector conducts optical detection of the sediment from the viewing window.

During the detection process, the seabed sediment probe is pressed down into the seabed sediment layer under the action of its own weight, so that part of the sediment below is squeezed into the groove. When the seabed sediment probe is moved by traction, the sediment squeezed into the groove is discharged in the opposite direction along the axial direction. Extruded by the shrinkage groove during the discharge process, on the one hand, the seawater in this part of the sediment is squeezed out, and on the other hand, part of the sediment is squeezed tightly to fit the outer surface of the inspection window. The seawater is squeezed out and tightly fitted to the sediment of the viewing window, which greatly avoids the influence of seawater blocking or loose sediment on the detection light of the detector, so that the detection data of the detector can accurately reflect the nature of the sediment itself. So as to obtain accurate detection results.

In one embodiment of the invention:

The larger end of the necking groove section of the groove is connected with a groove of equal section. The groove bottom surface of the necking groove is an inclined surface, and is configured such that its depth gradually decreases from one end close to the equal-section groove to the other end thereof.

In one embodiment of the invention:

The distance between the two groove sides delimiting the undercut groove gradually decreases.

In one embodiment of the invention:

The groove side is flat or smooth arc.

In one embodiment of the invention:

The tubular shell includes a smoothly connected cylindrical section and a hemispherical section with a necking groove extending into the outer surface of the hemispherical section.

In one embodiment of the invention:

The hemispherical segment has a counterweight.

In one embodiment of the invention:

A support plate is arranged inside the tube shell, and the support plate is connected to the axial middle position of the tube shell. A first mounting plate is connected between the hemispherical section and the support plate, and the detector is fixedly connected to the first mounting plate and faces the viewing window.

In one embodiment of the invention:

The support plate divides the inner chamber of the tube shell into a first chamber and a second chamber. The detector is arranged in the first chamber. Disposed in the second chamber is a power source configured to electrically connect and power the detector.

Embodiments of the present invention also provide a seabed sediment detection method, which includes the following steps:

Use cables to connect the aforementioned seabed sediment probe tube, and sink the sea bottom sediment probe tube into the seabed, so that the groove on the shell of the sea bottom sediment probe tube is pressed against the seabed sediment layer;

Pull the seabed sediment probe to move forward along the axis, and make the detector inspect the sediment pressed on the outer surface of the inspection window from the inspection window as required.

In one embodiment of the invention:

The cable is connected to the end of the seabed sediment probe away from the viewing window, and during the detection process, the length of the cable is controlled to tilt and lift the seabed sediment probe, and the end where the viewing window is located is pressed against the seabed sediment layer.

To sum up, the seabed sediment probe in the embodiment of the present invention can squeeze the seawater out and tightly fit the sediment on the viewing window, which greatly avoids the obstruction of seawater or the sediment is too loose to detect the light of the detector. The impact of the detector makes the detection data of the detector accurately reflect the nature of the sediment itself, so as to obtain accurate detection results.

Description of drawings

In order to illustrate the technical solutions of the embodiments of the present invention more clearly, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and thus It should be regarded as a limitation on the scope, and those skilled in the art can also obtain other related drawings based on these drawings without creative work.

Fig. 1 is the structural representation of the seabed sediment probe in the embodiment of the present invention;

Fig. 2 is the internal structural diagram of the seabed sedimentation probe in the embodiment of the present invention;

Fig. 3 is a sectional view along line A-A of Fig. 1;

Fig. 4 is a schematic diagram of a state of use of the seabed sedimentation probe in an embodiment of the present invention;

Fig. 5 is a schematic diagram of another usage state of the seabed sedimentation probe in the embodiment of the present invention.

Icon: 10-pipe shell; 11-hemispherical section; 12-cylindrical section; 13-counterweight body; 14-support plate; 15-first mounting plate; 16-second mounting plate; Detector; 40-power supply; C1-groove; C11-shrink groove; C12-equal section groove; P0-groove bottom; P1-groove side; Q1-first chamber; Q2-second chamber; 100- Seabed sediment probe; 200-cable; 300-exploration ship.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present invention, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" ” and other indications are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, if the terms "first", "second" and the like appear in the description of the present invention, they are only used to distinguish the description, and should not be understood as indicating or implying relative importance.

In addition, terms such as "horizontal" and "vertical" in the description of the present invention do not mean that the components are required to be absolutely horizontal or hang, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

Embodiment one

Fig. 1 is a schematic structural view of a seabed sediment probe 100 in Embodiment 1 of the present invention; Fig. 2 is a view of the internal structure of Fig. 1; Fig. 2 is a cross-sectional view along line A-A of Fig. 1 (partial structure is hidden and not shown). Please refer to FIG. 1 (see FIG. 2 and FIG. 3 for cooperation), the seabed sediment probe 100 in this embodiment includes a casing 10 and a detector 30 . The outer peripheral surface of the tube case 10 has a radially concave groove C1 extending along the axial direction of the tube case 10 . And one end of the groove C1 along its axial direction is a shrinking groove C11 whose cross-section gradually decreases. The casing 10 has a viewing window 20 located at the smaller cross-sectional end of the bottom surface P0 of the shrinking groove C11 . The detector 30 is disposed in the casing 10 and faces the viewing window 20 .

The method of using the seabed sediment probe 100 in the embodiment of the present invention is to pull the seabed sediment probe 100 pressed on the seabed sediment, so that the seabed sediment probe 100 moves on the seabed sediment layer. During the movement of the seabed sediment probe 100 , the detector 30 conducts optical detection of the sediment from the viewing window 20 .

During the detection process, the seabed sediment probe 100 presses down into the seabed sediment layer under the action of its own weight, so that part of the sediment below is squeezed into the groove C1. When the seabed sediment probe 100 is moved by traction, the sediment squeezed into the groove C1 is discharged in the opposite direction along the axial direction. Squeezed by the constriction groove C11 during the discharge process, on the one hand, the seawater in this part of the sediment is squeezed out, and on the other hand, part of the sediment is squeezed tightly to fit the outer surface of the viewing window 20 . The seawater is squeezed out and tightly fitted to the sediments of the viewing window 20, which greatly avoids the influence of seawater blocking or loose sediments on the detection light of the detector 30, so that the detection data of the detector 30 can accurately reflect the sediment itself properties, so as to obtain accurate detection results.

The aforementioned groove C1 is intended to enable the sediment in the groove C1 and the shell 10 to move relatively during the movement of the seabed sediment probe 100 , so that the sediment facing the inspection window 20 can be squeezed. out of the contained seawater, and press the outer surface of the inspection window 20 as much as possible to ensure that the detector 30 can directly detect the sediment through the inspection window 20 without being affected by seawater or as little as possible. Based on this, the groove C1 in this embodiment can be provided in various forms, for example, the constricted groove C11 of the groove C1 is connected with a groove C12 of equal cross-section at the larger cross-section end. The necking groove C11 is defined by a groove bottom surface P0 and two pairs of groove sides P1. The groove bottom surface P0 is an inclined surface, and is configured such that its depth gradually decreases from one end close to the constant-section groove C12 to the other end thereof. Optionally, the distance between the two groove sides P1 defining the constriction groove C11 decreases gradually, forming a similar figure-eight constriction. The groove side P1 can be a plane or a smooth arc surface.

In one embodiment of the present invention, the tube shell 10 includes a cylindrical section 12 and a hemispherical section 11 smoothly connected, and the constriction groove C11 extends into the outer surface of the hemispherical section 11 . In this way, when the other end of the seabed sediment probe 100 is lifted and the hemispherical section 11 is pressed against the sediment layer, the groove C1 and the shrinkage groove C11 can better fit the sediment layer, which is also beneficial for the sediment to enter and move out of the necking groove C11, and be pressed against the outer surface of the viewing window 20 in the necking groove C11. In order to make the press fit between the viewing window 20 and the deposits tighter, the hemispherical section 11 has a counterweight 13 .

In one embodiment of the present invention, a support plate 14 is provided inside the tube case 10 , and the support plate 14 is connected to the middle position of the tube case 10 in the axial direction. A first mounting plate 15 is connected between the hemispherical section 11 and the supporting plate 14 , and the detector 30 is fixedly connected to the first mounting plate 15 and faces the viewing window 20 . The support plate 14 divides the cavity of the tube case 10 into a first chamber Q1 and a second chamber Q2. The detector 30 is disposed in the first chamber Q1. A power source 40 configured to be electrically connected to the probe 30 and to supply power to the probe 30 is disposed in the second chamber Q2 . Please refer to Fig. 3 again, in order to prevent the seabed sediment probe 100 from being interfered by sea water or other external forces to rotate circumferentially during use, so that the viewing window 20 cannot face down to the sediment and affect the measurement. In this embodiment, the pipe shell 10 A plurality of inspection windows 20 are arranged along the circumferential direction, for example, three are arranged. There are also three groups of corresponding grooves C1 , first mounting plate 15 , detector 30 and other structures.

The seabed sediment probe 100 in the embodiment of the present invention is provided with a groove C1 along the axial direction and with a shrinkage groove C11 on the outer periphery of the shell 10, so that when the seabed sediment probe 100 receives the traction process, the sediment passes through the shrinkage. The seawater is pressed out of the notch C11 and pressed against the outer surface of the inspection window 20 to avoid the influence of the seawater on the detection, so that the detector 30 can directly and accurately detect the sediment and obtain accurate detection results.

Embodiment two

Referring to Fig. 4, the present embodiment provides a method for detecting seabed sediments, which includes the following steps:

Use the cable 200 to connect the seabed sediment probe 100 in Embodiment 1, and sink the seabed sediment probe 100 into the seabed, so that the groove C1 on the shell 10 of the seabed sediment probe 100 is pressed against the seabed sediment layer;

Pull the seabed sediment probe 100 forward along the axis, and make the detector 30 inspect the sediment pressed on the outer surface of the window 20 from the window 20 as required.

Optionally, referring to Fig. 5, the cable 200 is connected to the end of the seabed sediment probe 100 away from the viewing window 20, and the length of the cable 200 is controlled to tilt the seabed sediment probe 100 during the detection process. One end is pressed against the seabed sediment layer. By making the cable 200 lift the seabed sediment probe 100, it is beneficial for the seabed sediment probe 100 to pass through different seabed topography, and the pressing end of the inclined seabed sediment probe 100 can press the seabed sediment probe 100 more tightly, further The degree of compaction between the viewing window 20 of the seabed sediment probe 100 and the seabed sediment layer is improved, further improving the accuracy of detection results.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (8)

1. A submarine sediment probe, characterized in that:

the submarine sediment probe comprises a tube shell and a detector;

the outer peripheral surface of the tube shell is provided with a radially concave groove, and the groove extends along the axis direction of the tube shell; and one end of the groove along the axial direction is a necking groove with a gradually reduced section;

the tube shell is provided with a viewing window which is positioned at the smaller section end of the bottom surface of the necking groove; the detector is arranged in the tube shell and is opposite to the exploring window;

the larger end of the necking groove in cross section of the groove is connected with a constant cross section groove;

the bottom surface of the necking groove is an inclined surface and is configured to gradually reduce the depth from one end close to the constant-section groove to the other end;

the spacing between the two groove sides defining the necked-down groove is gradually reduced.

2. A submarine sediment probe according to claim 1, wherein:

the side surface of the groove is a plane or a smooth cambered surface.

3. A submarine sediment probe according to claim 1, wherein:

the cartridge includes a smooth-connected cylindrical section and a hemispherical section, with the necking slot extending into the outer surface of the hemispherical section.

4. A submarine sediment probe according to claim 3, wherein:

the hemispherical segment has a counterweight.

5. A submarine sediment probe according to claim 3, wherein:

a supporting plate is arranged in the tube shell and is connected to the axial middle position of the tube shell;

and a first mounting plate is connected between the hemispherical section and the supporting plate, and the detector is fixedly connected to the first mounting plate and is opposite to the detection window.

6. The subsea sediment probe according to claim 5, wherein:

the supporting plate divides the inner cavity of the tube shell into a first cavity and a second cavity; the detector is arranged in the first chamber; a power source is disposed in the second chamber and configured to electrically connect and power the detector.

7. A method of detecting a submarine sediment, comprising the steps of:

connecting the submarine sediment probe according to any one of claims 1-6 by using a cable, and sinking the submarine sediment probe into the sea floor, so that the grooves on the shell of the submarine sediment probe are pressed on the submarine sediment layer;

and (3) pulling the submarine sediment probe to axially advance, and enabling the detector to probe sediment pressed on the outer surface of the probing window from the probing window according to the requirement.

8. The method of seafloor sediment detection as set forth in claim 7, wherein:

the cable is connected to one end of the submarine sediment probe far away from the exploring window, the submarine sediment probe is obliquely lifted by controlling the length of the cable in the detection process, and one end of the exploring window is pressed on the submarine sediment layer.

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