CN216160857U - Underwater cable and typical metal target simulation device - Google Patents

Abstract

The utility model discloses a submarine cable and a typical metal target simulation device, which comprises a metal armored cable and a semi-submerged buried pipe, wherein the metal armored cable is connected to a dry end control device through a cable; the metal armored cable is positioned on the seabed or buried under the seabed; an electromagnetic radiator is mounted on the end head of the semi-submerged pipe and is connected with the dry end control equipment through a cable; the underwater detector is carried by a robot or controlled by a water surface support ship. Has the advantages that: 1. the bottleneck that the underwater buried simulation target is difficult to position acoustically is overcome, and the adaptability is strong; 2. the underwater water heater is fixed at the water bottom for a long time, has a fixed shape, has no circuit under water, has long service life and is convenient to use; 3. the relative position relationship of the underwater detector passing through the underwater target can be known, namely parallel passing or vertical passing, or other angles of passing.

Description

Underwater cable and typical metal target simulation device

Technical Field

The utility model belongs to the technical field of submarine metal simulation detection, relates to detection capability tests of various submarine cables or typical metal target detectors, and particularly relates to a submarine cable and typical metal target simulation device.

Background

In order to meet the requirements of ocean resource development activities, ocean environment protection, underwater rescue, underwater typical metal target detection and the like, imported or self-developed detection equipment in ocean equipment in China is more and more, and the adopted technology is more and more advanced. However, China has no corresponding means for testing the detection capability of the underwater cable and the typical metal target detection equipment and has no relevant standard basis, and the research and development manufacturers of the detection equipment are self-speaking and difficult to distinguish the detection performance of the detector.

The common underwater acoustic positioning method is influenced by the acoustic attenuation of the soil of the settled layer and the acoustic reflection of the surface of the settled layer, the frequency which can be transmitted by a target buried in the depth of 1m is generally below 1kHz, and an acoustic emission transducer of related positioning equipment is large in volume, high in cost and difficult in positioning of an acoustic target, so that other target positioning methods need to be considered.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provides a water bottom cable and a typical nonmagnetic metal target simulation device. The method can effectively solve the problem of detecting the functional indexes of the underwater cable and the typical metal target detector in the background technology.

In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:

a submarine cable and a typical metal target simulation device comprises a metal armored cable and a semi-submerged buried pipe, wherein the metal armored cable is connected to a dry end control device through a cable, and the semi-submerged pipe is submerged under the sea bed and is arranged in the sea water, and an included angle of 45 degrees is formed between the semi-submerged pipe and the sea bed; the metal armored cable is positioned on the seabed or buried under the seabed;

an electromagnetic radiator is mounted on the end head of the semi-submerged pipe and is connected with the dry end control equipment through a cable;

the underwater detector is carried by a robot or controlled by a water surface support ship.

Furthermore, the semi-submerged buried pipe is a non-magnetic metal aluminum alloy long pipe, the upper end of the semi-submerged buried pipe is provided with a non-metal pipe cover, and the lower end of the semi-submerged buried pipe is fixed at the water bottom through a non-metal suction pile;

the electromagnetic coil rods and/or the discharge electrodes are arranged at two ends of the semi-buried pipe, are insulated from the semi-buried pipe, are connected through cables at intervals of about 1m and are connected to the dry end control equipment;

further, the semi-submersible pipe is 12 inches or 20 inches in size, 3m or 6m in length, and the inner surface and the outer surface of the semi-submersible pipe are coated with paint for corrosion prevention and are insulated from seawater.

Furthermore, the metal armored cable is laid on the seabed or buried under the seabed, the metal armored cable is in a linear or bent shape, and the length of each section of metal armored cable is not less than 20 m;

each section of cable is communicated with the armor layer and the wire core of the metal armored cable through the connecting cable and then is connected to the dry end control equipment.

Furthermore, the metal armored cable is metal armor, the outmost layer is coated with painting cloth, a plurality of wire cores are arranged inside the metal armored cable, and the end head of the metal armored cable is sealed by a water sealing component.

Further, the bending section of the metal-clad cable is 60 degrees and comprises a plurality of bending sections.

Furthermore, the underwater buried pipe distance detector is a plurality of three-component electromagnetic sensor spatial arrays and is used for detecting electromagnetic radiation signals sent by coil rods on the end heads of cables or semi-submerged buried pipes and working with the dry end control equipment in a matching mode.

Furthermore, the underwater cables and the underwater equipment and other underwater equipment are connected by watertight connectors;

further, the connection cable may employ a metal-clad cable.

The working principle is as follows:

the metal armored cable is set to be in a bent and straight shape, laid and buried at different positions of a seabed, and a typical metal target is set at a specific position and fixed on the seabed for semi-burying so as to simulate the position forms and postures of the target cable and metal detected at the seabed together;

and then, adopting an electromagnetic target positioning method, when the underwater detector provided with the ranging signal detector is at a certain height from the seabed or detects the underwater target from the water surface, the detector receives an electromagnetic signal sent out by the underwater target, and the distance and the relative position relation between the detector and the submerged target are determined according to the amplitude and the direction of the detected electromagnetic signal, so that the detection capability of the underwater target detector to be checked is analyzed.

As the surrounding soil and water are non-magnetic media, only the buried pipe is metal which can affect the spatial distribution of electromagnetic waves, but the effect is specific, distance measurement can be carried out in advance, and the measured data result is used as reference for target positioning result estimation and result correction.

Compared with the prior art, the utility model has the following beneficial effects:

1. the metal armored cable is similar to an underwater cable commonly used in ocean engineering in form, and has three forms of laying, sinking and bending on the underwater surface, 1m of underwater soil is buried in the cable, the cable is fixed at the underwater for a long time, the form is fixed, an underwater target can transmit an electromagnetic wave signal by using an electromagnetic transmitter, no circuit exists, the service life is long, and the use is convenient;

2. the caliber and the length of the semi-buried metal pipe are close to those of common products in national defense, so that the performance test and the evaluation of military and civil underwater detector equipment are facilitated;

3. when the underwater detector passes above the underwater target, the relative position relation of the underwater detector passing through the underwater target can be known, namely the underwater detector passes through the underwater target in parallel or vertically or passes through the underwater target at other angles;

4. the bottleneck that underwater buried targets are difficult to position by acoustics is overcome, and the adaptability is strong.

Drawings

FIG. 1 is a schematic cross-sectional view of a water bottom cable and a typical metal target simulation device

FIG. 2 is a schematic view of underwater object detection of a seed water bottom cable and a typical metal object simulation apparatus.

Reference numerals:

the system comprises a cable 1, a dry end control device 2, a metal armored cable 3, a semi-submerged pipe 4, an electromagnetic radiator 5, an underwater submerged pipe distance detector 6, a water surface support ship 7, a seabed 8, seawater 9, a non-metal suction pile 10 and an underwater detector 11.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

Example 1

As shown in fig. 1-2, a submarine cable 1 and a typical metal target simulation device comprise a plurality of metal armored cables 3 and a plurality of semi-submerged pipes 4, wherein the metal armored cables 3 and the semi-submerged pipes 4 are connected through the cables 1 and then connected to a dry end control device 2, and further comprise an underwater detector 11 provided with an underwater submerged pipe distance detector 6, and the underwater detector 11 is carried by a robot or controlled by a water surface support ship 7.

The simulator also comprises an electromagnetic radiator 5 used for determining the underwater position and the attitude of the simulator, an underwater buried pipe distance detector 6 is arranged on the examined underwater detector carrying platform, the underwater buried pipe distance detector 6 is used for detecting an electromagnetic signal sent out by the underwater simulator, the distance and the relative position relation between the detector and a buried target are determined according to the amplitude, the phase, the direction and the like of the detected electromagnetic signal, and the detection capability of the underwater target detector is analyzed.

The semi-submerged pipe 4 is divided into a large caliber and a small caliber, one half of the pipe is submerged in the water bottom, the other half of the pipe is submerged in the seawater 9, the pipe is at an angle of about 45 degrees at the water bottom, the pipe is processed by nonmagnetic metal aluminum alloy and is fixed at the water bottom through a nonmetal suction pile 10.

Preferably, the semi-submerged pipe 4 is a section, the caliber of the semi-submerged pipe is 12 inches and 20 inches mainly aiming at the common target type, the length of the semi-submerged pipe is 3m and 6m respectively, the semi-submerged pipe is made of non-magnetic metal aluminum alloy (the surface of the semi-submerged pipe is coated with paint for corrosion prevention), the caliber and the length of the semi-submerged pipe are divided into the size and the length, the semi-submerged pipe is convenient to purchase, one half of the semi-submerged pipe is submerged in the sea water 9, the pipe and the sea bed 8 form an inclination angle of 45 degrees, the upper end of the semi-submerged pipe is provided with a pipe cover, and the lower end of the semi-submerged pipe is fixed at the bottom of the water through a non-metal suction pile 10. Nonmetal suction stake 10 adopts the processing of glass steel material, can be circular or square, and the area is about 2 x 2 ═ 4m2, and glass steel material's thickness is 10mm, and there is frame construction inside, and it is also convenient fixed under water to increase intensity.

Preferably, the semi-buried pipe 4 is divided into a semi-buried metal small pipe and a semi-buried metal large pipe, two ends of the semi-buried pipe are provided with electromagnetic coil bars (inductance is generally not more than 100mH) or two titanium alloy discharge electrodes (pipes), the semi-buried pipe is insulated from the underwater semi-buried pipe 4, and the semi-buried pipe is not electrically connected with the buried pipe.

Preferably, the electromagnetic radiator 5 at the end of the pipe is an electromagnetic coil rod and/or a titanium alloy discharge electrode, the semi-buried metal pipe is connected with the wire cores of 3 coaxial cables 1 in the cable 1, the output line of the cable 1 is connected to the control device 2 for control, the output power signal of the control device 2 and the electromagnetic coil rod generate LC series resonance, and the generated electromagnetic radiation field is used for simulating the measurement of the relative position of the device target and the detector. Similarly, the titanium alloy electrode with two ends discharging can be used as the electromagnetic radiation field of the line current generated by the discharging electrode, and is used for carrying the underwater buried pipe distance detector 6 on the detector platform to measure the direction and the position of the detector passing through the target of the simulation device;

the metal armored cable 3 is arranged at the water bottom and is divided into three sections, the three shapes of laying, sinking and bending are used for the water bottom surface, the length of each section of the metal armored cable 3 is not less than 20m, the bending section can be longer, a plurality of bends are formed, and more bending characteristics can be simulated.

The underwater metal armored cable 3 is arranged at the water bottom, a metal outer armored mode commonly used in ocean engineering is adopted, the caliber is more than 80mm, the underwater metal armored cable is laid on the surface, buried and bent, and the length of each section of the metal armored cable 3 is not less than 20 m. The buried depth of the laying section cable 1 is 1m, and the bending section is about 60 degrees (the length can be more than 20m, and the bending sections can be multiple).

Preferably, the metal-clad cable 3 is a metal-clad cable, the outmost layer of the metal-clad cable is coated with paint-coated cloth (rope) and the like, a plurality of wire cores are arranged inside the metal-clad cable, and the end of the metal-clad cable is provided with a water sealing measure. There are the armor and the sinle silk intercommunication of sinle silk and metal armor cable 3 in the cable 1 of connection, and the connected mode is the watertight connector, if special processing, the cable 1 of connection also can be metal armor cable 3, becomes a with cable 1 by many, need not cut off after 1 processing of cable.

Preferably, the core wire of the coaxial cable 1 inside the cable 1 is a copper wire core, and the signals transmitted by the core wire form a current loop inside the coaxial cable 1, and electromagnetic radiation of the current loop is cancelled out, so that the cable 1 has no electromagnetic wave external radiation overall, and the cable 1 does not affect the detection signal of the underwater buried pipe distance detector 6 on the platform carrying the detector. Similarly, if the underwater cable 1 needs to be positioned, the cable 1 needs to send an electromagnetic radiation signal, two discharge electrodes on the end of the semi-submerged metal pipe can be combined to be used as one discharge electrode during measurement, one electrode is placed under water beside the dry end control device 2, the electrode in the water and the water form a discharge loop together, a power type pulse signal is sent from the dry end control device 2, the signal is detected by the water submerged pipe distance detector 6, and the distance measurement and the relative position measurement of the detector and the target can be carried out.

Preferably, the underwater buried pipe distance detector 6 is a three-component electromagnetic sensor spatial array, and is configured to detect an electromagnetic radiation signal emitted by a coil rod (or a titanium electrode) at an end of the cable 1 or the semi-buried metal pipe, and cooperate with the dry-end control device 2, and when the dry-end control device 2 emits an electromagnetic signal, the electromagnetic radiation signal is detected by the underwater buried pipe distance detector 6, and a distance and a relative position between the underwater detector and the cable 1 or the semi-buried pipe 4 are estimated by using the detection signal. The underwater buried pipe distance detector 6 can be a coil or a fluxgate.

The principle and the method for measuring the relative position of the detector and the target are as follows:

1. two discharge electrodes on the end of a semi-submerged metal pipe can be combined to be used as one discharge electrode, one electrode is placed under water beside a dry end control device 2, two electrodes form a discharge loop under water, a cable 1 is connected to the dry end control device 2, the dry end control device 2 sends out a power type pulse signal, the underwater cable 1 sends out an electromagnetic radiation signal, a signal detector arranged in space is used for detecting and analyzing the signal, and therefore the distance and the relative position relation between the detector and a target cable 1 can be estimated. The frequencies used are generally low, typically below 500 Hz.

2. The relative position relationship between the target and the detector can be measured by using the coil rod on the semi-submerged pipe 4. Pulse power signals are output through the dry end control device 2, the electromagnetic coil rods on the semi-buried pipes 4 are connected through inner core wires and outer core wires of the underwater coaxial cables 1, electromagnetic radiation fields are respectively generated by the electromagnetic coil rods in an LC series resonance mode, the spatial distribution of the electromagnetic radiation fields generated by the electromagnetic coil rods is specific, in order to reduce the influence of metal pipes on the distribution fields, the frequency of the electromagnetic radiation signals needs to be reduced, generally within 500Hz, and the coil rods are located at the ends of the pipes and the distance between the coil rods and the pipes is larger than 1 m. And detecting a space electromagnetic radiation signal by using the underwater buried pipe distance detector 6, and estimating the distance and relative position relation of the target by using the amplitude, direction and the like of the electromagnetic signal.

The two methods both belong to an electromagnetic target positioning method, because the surrounding soil and water are non-magnetic media, only the buried pipe is metal, the spatial distribution of electromagnetic waves can be influenced, but the influence is specific, the distance measurement can be carried out in advance, and the measured data result is taken as a reference, so that the target positioning result can be corrected conveniently. The pipe and cable are insulated from the water body by coating paint, coating, sheath and the like, and water corrosion is avoided. The electrodes forming a loop with the water body need to be isolated from the circuit, and the electrodes are connected with the circuit when in use, so that the functional circuit cannot be corroded.

The working mode is as follows:

when the underwater detector 11 carried by a robot or towed by a water surface supporting ship 7 is used for detecting underwater targets at a certain height from a seabed 8 or from the water surface, the underwater buried pipe distance detector 6 is carried on the detector and is used for detecting electromagnetic signals (generally periodic signals or continuous signals) sent out by the underwater targets, determining the distance and relative position relation between the detector and the buried targets according to the amplitude, the size and the direction of the detected electromagnetic signals and analyzing the detection capability of the underwater target detector.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the utility model and are not intended to be limiting. For a person skilled in the art to which the utility model pertains, several simple deductions, modifications or substitutions may be made according to the idea of the utility model.

Claims (9)

1. A water bottom cable and a typical metal target simulation device, characterized in that,

the device comprises a metal armored cable (3) and a semi-submerged buried pipe (4) which are connected to a dry end control device (2) through a cable (1), wherein one half of the semi-submerged buried pipe (4) is submerged under a seabed (8), and the other half of the semi-submerged buried pipe is in seawater (9) and forms an included angle of 45 degrees with the seabed (8); the metal armored cable (3) is positioned on the seabed (8) or is buried under the seabed (8);

an electromagnetic radiator (5) is installed on the end head of the semi-submerged buried pipe (4), and the electromagnetic radiator (5) is connected with the dry end control equipment (2) through a cable (1);

the underwater detection device is characterized by further comprising an underwater detector (11) provided with an underwater buried pipe distance detector (6), wherein the underwater detector (11) is carried by a robot or controlled by a water surface support ship (7).

2. The apparatus of claim 1,

the semi-submerged buried pipe (4) is a non-magnetic metal aluminum alloy long pipe, the upper end of the semi-submerged buried pipe is provided with a non-metal pipe cover, and the lower end of the semi-submerged buried pipe is fixed at the bottom of the water through a non-metal suction pile (10);

and electromagnetic coil rods and/or discharge electrodes are arranged at two ends of the semi-submerged buried pipe (4), and the electromagnetic coil rods and/or the discharge electrodes at the two ends are insulated from the semi-submerged buried pipe (4).

3. The apparatus of claim 2,

the semi-submersible buried pipe (4) is 12 inches or 20 inches in size, 3m or 6m in length, and the inner surface and the outer surface of the semi-submersible buried pipe are coated with paint for corrosion prevention and are insulated from seawater (9).

4. The apparatus of claim 1,

the metal armored cable (3) is laid on the seabed (8) or buried under the seabed (8), the metal armored cable (3) is in a linear or bent shape, and the length of each section of the metal armored cable (3) is not less than 20 m;

each section of cable (1) is communicated with the armor layer and the wire core of the metal armored cable (3) through the connecting cable (1) and then is connected to the dry end control equipment (2).

5. The apparatus of claim 4,

the metal armored cable (3) is metal armor, the outmost layer is coated with painting cloth, a plurality of wire cores are arranged inside the metal armored cable, and the end of the metal armored cable is sealed by a water sealing component.

6. The apparatus of claim 4,

the bending section of the metal armored cable (3) is 60 degrees and comprises a plurality of bending sections.

7. The apparatus of claim 1,

the underwater buried pipe distance detector (6) is a plurality of three-component electromagnetic sensor spatial arrays and is used for detecting electromagnetic radiation signals sent by coil rods on the end heads of the cable (1) or the semi-buried pipe (4) and working in cooperation with the dry end control equipment (2).

8. The apparatus of claim 1,

the underwater cables (1), the underwater cables (1) and underwater equipment and other underwater equipment are connected by watertight connectors.

9. The apparatus of claim 1,

the connecting cable (1) adopts a metal armored cable (3).

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