CN111650649A - Cable integrated electric field sensor electrode array and preparation method thereof - Google Patents
Cable integrated electric field sensor electrode array and preparation method thereof Download PDFInfo
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- CN111650649A CN111650649A CN202010660276.8A CN202010660276A CN111650649A CN 111650649 A CN111650649 A CN 111650649A CN 202010660276 A CN202010660276 A CN 202010660276A CN 111650649 A CN111650649 A CN 111650649A
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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Abstract
The invention discloses a cable integrated electric field sensor electrode array and a preparation method thereof, relating to the technical field of ocean electric field sensors, wherein the cable integrated electric field sensor electrode comprises: a multi-core cable and a tubular electrode; the tubular electrode is sleeved outside the multi-core cable in a penetrating manner; one of the tubular electrodes is connected with one core wire in the multi-core cable; the multi-core cable is used for transmitting ocean electric field information. The device and the preparation method thereof provided by the invention can realize the real-time transmission of the electric field information of the marine environment.
Description
Technical Field
The invention relates to the technical field of ocean electric field sensors, in particular to a cable integrated electric field sensor electrode array and a preparation method thereof.
Background
The ocean not only contains abundant oil gas and mineral resources, but also provides wide space for human beings. With the attention of human beings on the sea and the development of marine earth science and technology, on one hand, the development of human beings on seabed resources is continuously increased, and the marine electromagnetic method also becomes an important means for human beings to explore and develop the seabed, and on the other hand, moving targets such as underwater ships and underwater vehicles and the like have specific electric field signals, so that the moving targets are important underwater target signal sources, and the detection of the signals by using the electric field sensor has important military functions.
The electric field sensor is one of the important sensors of the ocean electromagnetic method, and generally comprises a pair of same electrodes, an external electric field causes the potential difference (voltage) between the two same electrodes, and the external electric field change is obtained by collecting the voltage signal and carrying out reverse deduction. Therefore, electric field sensors have important impact on marine electromagnetic exploration and development of oil and gas resources.
At present, the electrodes of the ocean electric field sensor are generally divided into two types, namely a reversible electrode and a polarizable electrode. The reversible electrode comprises Hg/Hg2Cl2、Pb/PbCl2And Ag/AgCl electrodes and the like, the metal insoluble salt electrodes are non-polarized electrodes, and the electrode potential and insoluble salt anions (such as chloride ions) in the solution have a response relation, thereby conforming to the Nernst electrochemical equation. At present, the most used electrode is an Ag/AgCl electrode which has better stability, higher precision, lower self-noise and good response performance. The other type of polarizable electrode is represented by a carbon fiber electrode, and comprises titanium, gold, platinum black, carbon aerogel electrodes and the like, wherein the electrodes do not generate chemical reaction, and an external electric field is converted into an electric signal mainly by utilizing the charge-discharge change of an electric double layer on the surface of an electrode material, so that the change of the external electric field is analyzed.
Under the common conditions, the electrodes of the electric field sensors are connected with an ocean cable through watertight connectors or connected with other cables through cables led out from the electrodes, and then connected to a collecting and amplifying circuit to form a three-dimensional electric field testing device for use. For long-distance detection or large-area exploration, N three-dimensional electric field acquisition stations are distributed on the seabed to form an array for use, and the array is used for exploring seabed oil and gas resources. For convenience in construction and arrangement, the three-dimensional electric field acquisition station is not suitable to be designed to be too large, but the space (base line) between paired electrodes of the electric field sensor is small, generally within 1-10 meters, and the test sensitivity of the electric field sensor is affected. Meanwhile, certain technical risks exist in the arrangement and recovery of the three-dimensional electric field acquisition station, the marine environment electric field information cannot be transmitted back in real time, the exploration information and data can be obtained only by recovering the three-dimensional electric field acquisition station, and timeliness does not exist.
Disclosure of Invention
The invention aims to provide a cable integrated electric field sensor electrode array and a preparation method thereof, which are used for realizing the real-time transmission of electric field information of marine environment.
In order to achieve the purpose, the invention provides the following scheme:
a cable-integrated electric field sensor electrode array, comprising: a multi-core cable and a tubular electrode;
the tubular electrode is sleeved outside the multi-core cable in a penetrating manner; one of the tubular electrodes is connected with one core wire in the multi-core cable; the multi-core cable is used for transmitting ocean electric field information.
Optionally, the tubular electrode is connected with one core wire of the multi-core cable through a lead wire; the connection modes of the tubular electrode, the lead, the multi-core cable and the lead are welding.
Optionally, the welding point of the tubular electrode and the lead is subjected to watertight treatment by using epoxy resin.
Optionally, the cable integrated electric field sensor electrode array further includes a tubular groove structure; the tubular groove structure is sleeved outside the multi-core cable in a penetrating manner; the tubular groove structure is used for fixing the tubular electrode outside the multi-core cable.
Optionally, the cable-integrated electric field sensor electrode array further includes an outer sleeve and a tubular plug; the tubular plugs are fixed at two ends of the outer sleeve through threads; the tubular groove structure and the tubular electrode are both located in the outer sleeve.
Optionally, the outer sleeve is provided with a plurality of small holes, and the small holes are used for realizing the contact between the seawater and the tubular electrode.
Optionally, the diameter of the tubular electrode is the same as the outer diameter of the multi-core cable.
Optionally, a plurality of the tubular electrodes are provided; different said core wires correspond to different said tubular electrodes.
In order to achieve the above purpose, the invention also provides the following scheme:
a preparation method of an electrode array of a cable integrated electric field sensor specifically comprises the following steps:
sleeving a tubular electrode outside a multi-core cable in a penetrating manner, sleeving a tubular groove structure outside the multi-core cable in a penetrating manner, and then inserting the tubular electrode into the tubular groove structure to fix the tubular electrode;
welding one of the tubular electrodes to one of the core wires of the multi-core cable by using a wire;
sleeving an outer sleeve with a small hole outside the tubular electrode, and filling sealant in the outer sleeve;
and fixing two ends of the external sleeve with the tubular plugs through threads, and sealing and curing the threads by using a sealant.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a cable integrated electric field sensor electrode array and a preparation method thereof, wherein a tubular electrode is sleeved outside a multi-core cable in a penetrating way, and one tubular electrode is connected with one core wire in the multi-core cable; the invention realizes the function of transmitting the electric field information of the marine environment to the shore-based receiving platform in real time through the integrated design of the multi-core cable and the tubular electrode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic view of an electrode array of a cable-integrated electric field sensor according to the present invention;
FIG. 2 is an external schematic view of an integrated electric field sensor electrode array of the cable of the present invention;
FIG. 3 is a schematic view of an integrated cable electric field sensor electrode array according to the present invention;
fig. 4 is a schematic view of a prior art three-dimensional electric field acquisition station.
Description of the symbols:
1-multi-core cable, 2-silver/silver chloride electrode, 3-tubular groove structure, 4-external sleeve, 5-tubular plug, 6-sealant, 7-lead welding spot and 8-lead.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a cable integrated electric field sensor electrode array and a preparation method thereof, which are used for realizing the real-time transmission of electric field information of marine environment.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Example one
As shown in fig. 1, an embodiment provides a cable-integrated electric field sensor electrode array, including: a multi-core cable 1 and a tubular electrode; the tubular electrode is sleeved outside the multi-core cable 1; one of the tubular electrodes is connected to one of the core wires in the multi-core cable 1; the multi-core cable 1 is used for transmitting ocean electric field information. The tubular electrode in this example is a silver/silver chloride electrode 2.
As an alternative embodiment, the tubular electrode is connected with one core wire of the multi-core cable 1 through a lead wire 8; the connection modes of the tubular electrode and the lead wire 8 and the multi-core cable 1 and the lead wire are all welding, namely, lead welding points 7 are arranged between the tubular electrode and the lead wire 8 and between the multi-core cable 1 and the lead wire 8.
As an alternative embodiment, the welding point of the tubular electrode and the lead wire 8 is treated with epoxy resin in a watertight manner.
As an alternative embodiment, the cable-integrated electric field sensor electrode array further comprises a tubular groove structure 3; the tubular groove structure 3 is sleeved outside the multi-core cable 1 in a penetrating manner; the tubular groove structure 3 is used for fixing the tubular electrode outside the multi-core cable 1.
As an alternative embodiment, the cable-integrated electric field sensor electrode array further comprises an outer sleeve 4 and a tubular plug 5; the tubular plugs 5 are fixed at two ends of the outer sleeve 4 through threads; the tubular groove structure 3 and the tubular electrode are both located within the outer casing 4.
As an alternative embodiment, as shown in fig. 2, the outer sleeve 4 is provided with a plurality of small holes for contacting the seawater and the tubular electrode. The interior of the outer sleeve 4 is also filled with a sealant 6. Specifically, the sealant 6 is arranged at the position of the lead welding point 7, and the sealant 6 is used for protecting the lead welding point 7.
As an alternative embodiment, the diameter of the tubular electrode is the same as the outer diameter of the multicore cable 1.
As an alternative embodiment, the tubular electrode is provided in plurality; different said core wires correspond to different said tubular electrodes.
Example two
The embodiment also provides a preparation method of the electrode array of the cable integrated electric field sensor, which specifically comprises the following steps:
and sleeving a tubular electrode outside the multi-core cable, sleeving a tubular groove structure outside the multi-core cable, and then inserting the tubular electrode into the tubular groove structure to fix the tubular electrode.
And welding one tubular electrode and one core wire of the multi-core cable by using a lead.
And sleeving an outer sleeve with a small hole outside the tubular electrode, and filling the outer sleeve with sealant.
And fixing two ends of the external sleeve with the tubular plugs through threads, and sealing and curing the threads by using a sealant.
EXAMPLE III
The embodiment provides a specific preparation method of an electrode array of a cable integrated electric field sensor. The electric field sensor electrodes and the multi-core cable are integrally prepared as shown in fig. 3, and N electric field sensor electrodes on the multi-core cable form an array, and the preparation method comprises the following steps:
the first step is as follows: selecting a tubular electrode with a certain diameter, wherein the diameter of the tubular electrode is consistent with the outer diameter of the multi-core cable, sleeving the tubular electrode on the multi-core cable, designing a tubular groove structure to be sleeved on the multi-core cable, and inserting the tubular electrode into the tubular groove structure to fix the tubular electrode.
The second step is that: the tubular electrode lead is welded to one core of the multi-core cable, a plastic pipe with holes is sleeved on the outer portion of the multi-core cable, sealant is filled inside the plastic pipe to protect welding points and the tubular electrode lead, the welding points are prevented from contacting seawater, and meanwhile the tubular electrode and the seawater are in contact with each other.
The third step: and plastic plugs with threads are additionally arranged at two ends of the plastic pipe, the thread sealing glue is solidified to form an integrated multi-core cable and tubular electrodes, and each tubular electrode is connected with the acquisition amplifying circuit through the multi-core cable.
The fourth step: and reasonably designing the distance and the number between the tubular electrodes on the multi-core cable, and sequentially assembling and sealing according to the method to prepare the cable-integrated electric field sensor electrode array.
The tubular electrode is a silver/silver chloride electrode, a carbon fiber electrode and a platinum black electrode, and is designed into a tubular shape, and the diameter of the tubular electrode is matched with the outer diameter of the multi-core cable. A multi-core cable corresponds to a plurality of tubular electrodes, and the plurality of tubular electrodes form an array. The tubular electrode leads correspond to the inner core wires of the multi-core cable, one tubular electrode lead corresponds to the inner core wire of the multi-core cable, the tubular electrode leads are welded to the core wires of the multi-core cable, and welding spots are sealed by sealant to prevent seawater contact. And an external sleeve with holes is also arranged to ensure that the seawater and the electrodes are contacted with each other, so that the measurement of an ocean electric field is realized. The tubular electrode transmits the electric field information of the marine environment through a multi-core cable core wire, and is also connected with the acquisition amplifying circuit.
The preparation method of the embodiment has the characteristics that:
(1) the technical principle of detecting the electric field is that an external electric field signal E causes reverse migration of chloride ions in seawater, according to a Nernst electrochemical equation, a chloride ion concentration difference causes a pair of silver/silver chloride electrodes to generate a potential difference delta E, potential difference change (voltage signal) between the pair of silver/silver chloride electrodes is collected, and the external electric field change is calculated through reverse deduction.
(2) The tubular silver/silver chloride electrode has the diameter similar to that of the multi-core cable, and is convenient for combining with the multi-core cable and fixed in tubular groove structure.
(3) The silver/silver chloride tubular electrode is welded with a copper wire, and the welding point is subjected to watertight treatment by using epoxy resin, so that the welding point is prevented from contacting seawater.
(4) Stripping the outer skin of the multi-core cable at a proper position, welding one end of a copper wire led out from the silver/silver chloride tubular electrode to a core wire in the multi-core cable, and sealing and waterproofing the welding point.
(5) The method comprises the steps of designing and processing an external sleeve, sleeving the external sleeve outside a multi-core cable and a silver/silver chloride tubular electrode, filling sealant in the external sleeve to protect welding points of a silver/silver chloride tubular electrode lead and a multi-core cable core wire, connecting the silver/silver chloride tubular electrode and the multi-core cable together to form an integrated structure of the multi-core cable and the silver/silver chloride tubular electrode, and meanwhile avoiding the silver chloride active area of the silver/silver chloride tubular electrode from being influenced by the sealant.
(6) A plurality of small holes are processed on the wall of the outer sleeve, so that the outer seawater and the silver/silver chloride tubular electrode area can be conveniently contacted with each other, and the normal response of the tubular electrode to an ocean electric field is realized.
(7) The two ends of the external sleeve are provided with threads, the external sleeve is matched with the tubular plug with threads at the two ends, the whole multi-core cable continuously passes through the middle, the tubular plug is in threaded connection with the external sleeve, sealant is filled in the tubular plug, and the tubular plug, the multi-core cable and the silver/silver chloride tubular electrode are integrated.
(8) According to the same method, N silver/silver chloride tubular electrodes are assembled on one N-core cable, and the two silver/silver chloride tubular electrodes are paired with each other according to the potential approaching principle to form the cable integrated electric field sensor electrode array.
(9) The silver/silver chloride tubular electrode corresponds to a core wire inside the multi-core cable and is connected with a data acquisition amplifying circuit outside a long distance through the core wire of the multi-core cable, so that the real-time transmission of the environmental electric field information is realized.
(10) According to actual needs, tens or hundreds of tubular electrodes are connected with a multi-core cable of several kilometers at certain intervals (such as 50 meters and 100-meter basic line design), so that the long-distance induction, detection and information transmission of electric field signals of marine environments are realized.
In addition, the invention also provides a plurality of specific implementation modes, which comprise the following specific contents:
example four
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 15-core cable with the diameter of 10mm, selecting a silver/silver chloride tubular electrode with the inner diameter of 10mm, welding a copper wire to the silver/silver chloride tubular electrode, and fixing the silver/silver chloride tubular electrode on a tubular groove structure; leading-out copper wires are welded on the tubular electrodes and are welded with one core in the stripped multi-core cable together, an external sleeve with holes is sleeved on the tubular electrodes, pipe type plugs are respectively screwed at two ends of the external sleeve, and sealant is filled in an internal cavity and a welding position to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and sequentially assembling silver/silver chloride tubular electrodes at intervals of 80 meters according to the method, and preparing a cable integrated electric field sensor array consisting of 12 silver/silver chloride tubular electrodes with the length of 1000 meters.
EXAMPLE five
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 40-core cable with the diameter of 30mm, selecting a silver/silver chloride tubular electrode with the inner diameter of 30mm, welding a copper wire to the silver/silver chloride tubular electrode, and fixing the silver/silver chloride tubular electrode on a tubular groove structure; welding a lead-out copper wire, welding the lead-out copper wire with one core of the stripped multi-core cable together, sleeving an external sleeve with a hole, respectively screwing a tubular plug at two ends of the external sleeve, and pouring sealant for curing in an internal cavity and a welding part to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and sequentially fixedly assembling silver/silver chloride tubular electrodes at intervals of 50 meters according to the method, and preparing a cable integrated electric field sensor array consisting of 38 silver/silver chloride tubular electrodes with the length of 2000 meters.
EXAMPLE six
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 20-core cable with the diameter of 10mm, selecting a silver/silver chloride tubular electrode with the inner diameter of 10mm, welding a copper wire to the silver/silver chloride tubular electrode, and fixing the silver/silver chloride tubular electrode on a tubular groove structure; welding the lead-out copper wire and a core in the stripped multi-core cable together, sleeving an external sleeve with a hole, screwing pipe type plugs at two ends of the external sleeve respectively, and pouring sealant for curing in an internal cavity and a welding part to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and sequentially fixedly assembling silver/silver chloride electric field tubular electrodes at intervals of 100 meters according to the method, and preparing a cable integrated electric field sensor array consisting of 18 silver/silver chloride tubular electrodes with the length of 2000 meters.
EXAMPLE seven
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 20-core cable with the diameter of 20mm, selecting a silver/silver chloride tubular electrode with the inner diameter of 20mm, welding a copper wire to the silver/silver chloride tubular electrode, and fixing the silver/silver chloride tubular electrode on the tubular groove structure; welding the lead-out copper wire and a core in the stripped multi-core cable together, sleeving an external sleeve with a hole, screwing pipe type plugs at two ends of the external sleeve respectively, and pouring sealant for curing in an internal cavity and a welding part to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and sequentially fixedly assembling silver/silver chloride tubular electrodes at intervals of 50 meters according to the method, and preparing a cable integrated electric field sensor array consisting of 18 silver/silver chloride tubular electrodes with the length of 1000 meters.
Example eight
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 20-core cable with the diameter of 20mm, selecting a tubular electrode formed by carbon fibers with the inner diameter of 20mm, welding a copper wire to the carbon fiber tubular electrode, and fixing the carbon fiber tubular electrode on the tubular groove structure; welding the lead-out copper wire and a core in the stripped multi-core cable together, sleeving an external sleeve with a hole, screwing pipe type plugs at two ends of the external sleeve respectively, and pouring sealant for curing in an internal cavity and a welding part to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and (3) fixedly assembling carbon fiber tubular electrodes at intervals of 50 meters in sequence according to the method, and preparing a cable integrated electric field sensor array formed by 18 carbon fiber tubular electrodes with the length of 1000 meters.
Example nine
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 30-core cable with the diameter of 20mm, selecting a tubular electrode formed by carbon fibers with the inner diameter of 20mm, welding a copper wire to the carbon fiber tubular electrode, and fixing the carbon fiber tubular electrode on the tubular groove structure; welding the lead-out copper wire and a core in the stripped multi-core cable together, sleeving an external sleeve with a hole, screwing pipe type plugs at two ends of the external sleeve respectively, and pouring sealant for curing in an internal cavity and a welding part to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and sequentially fixedly assembling carbon fiber tubular electrodes at intervals of 100 meters according to the method, and preparing a cable integrated electric field sensor array formed by 28 carbon fiber tubular electrodes with the length of 3000 meters.
Example ten
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 30-core cable with the diameter of 20mm, selecting a tubular electrode formed by platinum black with the inner diameter of 20mm, welding a copper wire to the platinum black tubular electrode, and fixing the platinum black tubular electrode on the tubular groove structure; welding the lead-out copper wire and a core in the stripped multi-core cable together, sleeving an external sleeve with a hole, screwing pipe type plugs at two ends of the external sleeve respectively, and pouring sealant for curing in an internal cavity and a welding part to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and sequentially fixedly assembling platinum black tubular electrodes at intervals of 100 meters according to the method, and preparing a cable integrated electric field sensor array consisting of 28 platinum black tubular electrodes with the length of 3000 meters.
EXAMPLE eleven
A preparation method of an electrode array of a cable integrated electric field sensor comprises the following steps: selecting a 30-core cable with the diameter of 10mm, selecting a tubular electrode formed by platinum black with the inner diameter of 10mm, welding a copper wire to the platinum black tubular electrode, and fixing the platinum black tubular electrode on the tubular groove structure; welding a lead-out copper wire, welding the lead-out copper wire with a core of the stripped multi-core cable together, sleeving an external sleeve with a hole, screwing pipe type plugs at two ends of the external sleeve respectively, and pouring sealant for curing in an internal cavity and a welding position to prevent seawater from contacting welding spots to cause corrosion; meanwhile, sealant is coated on the threads of the tubular plugs at the two ends, so that the watertight state of the two ends is kept good; and sequentially fixedly assembling platinum black tubular electrodes at intervals of 100 meters according to the method, and preparing a cable integrated electric field sensor array consisting of 28 platinum black tubular electrodes with the length of 3000 meters.
Example twelve
The electrode array of the integrated silver/silver chloride electric field sensor of the cable with the length of 3 kilometers and 30 cores comprises 28 tubular electrodes, one end of the electrode array of the integrated silver/silver chloride electric field sensor of the cable is placed at the seabed, the other end of the electrode array of the integrated silver/silver chloride electric field sensor of the cable is connected with a collecting and amplifying circuit, power is supplied through redundant multi-core cable cores, long-term detection is carried out at the seabed, the detection is carried out back to the shore through the multi-core cable cores or optical fibers, and the electric field information of the.
EXAMPLE thirteen
A5 km long 50-core cable integrated silver/silver chloride electric field sensor electrode array (containing 40 tubular electrodes) is characterized in that one end of the cable integrated silver/silver chloride electric field sensor electrode array is placed on the sea bottom, the other end of the cable integrated silver/silver chloride electric field sensor electrode array is connected with a collecting and amplifying circuit, power is supplied through redundant multi-core cable cores, the electrode array is detected all the time on the sea bottom and transmitted back to the shore through the multi-core cable cores or optical fibers, and marine environment electric field information is detected and transmitted in real time.
Compared with the prior art, particularly the three-dimensional electric field acquisition station shown in fig. 4, the preparation method of the electrode array of the cable integrated electric field sensor provided by the invention has the following beneficial effects:
(1) the defect that the distance between electrodes is short in the traditional design is overcome, the distance (long baseline) between two silver/silver chloride electric field sensor electrodes is increased, the testing sensitivity is improved, the traditional electromagnetic acquisition system considers the equipment size and the distribution difficulty, and the designed electric field sensor electrode baseline is within 10 meters.
(2) The length of the multi-core cable and the number of the tubular electrodes are easy to design and regulate, the length of the multi-core cable is designed to be kilometers or hundreds of meters, and the number of the tubular electrodes can be regulated, so that silver/silver chloride electric field sensors with different specifications and performances can be conveniently designed, and ocean electric field tests can be carried out.
(3) The cable integrated electric field sensor electrode array is easy to lay and construct in the ocean, and the reliability and flexibility of construction are improved by laying a winch or using a towing cable.
(4) The integrated electric field sensor electrode array of the cable enables the ocean electric field signal test mode to be more flexible, and the integrated electric field sensor electrode array can be placed in a seabed fixed test electric field and also can be dragged to test in water.
(5) According to the technical characteristics of different electric field sensors, the cable integrated electric field sensor electrode array has multiple selectable tubular electrodes, multiple choices or combinations can be realized, and in an ocean cable with the length of several kilometers, the silver/silver chloride sensor electrode can be used, and meanwhile, the carbon fiber electric field sensor electrode can also be used, and the combinations can be used in a crossed manner.
(6) The connection mode of the electrode array of the cable integrated electric field sensor and the acquisition amplifying circuit is more various.
(7) The cable integrated electric field sensor electrode array is additionally provided with an external sleeve, and has good ocean current scouring resistance.
(8) The cable integrated electric field sensor electrode array has good stability and impact resistance.
(9) The surface of the cable integrated electric field sensor electrode array is coated with the antifouling paint, and the antifouling paint has good marine organism adhesion resistance.
(10) The electrode array of the cable integrated electric field sensor has good water tightness and can resist 4000 m pressure in deep sea.
(11) The cable integrated electric field sensor electrode array has high stability, and the range drift amount is less than 100 mu V in 24 hours.
(12) The cable integrated electric field sensor electrode array has low self-noise, and the self-noise at a frequency point of 1Hz is not more than 50nV/rtHz @1 Hz; or to design the sensor electrode noise level as desired.
(13) The cable integrated electric field sensor electrode array has high sensitivity response and wide-range frequency response, and has better response to electric field signals of 0.001Hz, 1mV and even weaker.
(14) The cable integrated electric field sensor electrode array has wide application range and can be used for electric field detection in water such as ocean or low-salt seawater.
(15) The cable integrated electric field sensor electrode array can select a silver/silver chloride electrode, a carbon fiber electrode and a platinum black electrode.
(16) The number of tubular electrodes in the electrode array of the cable integrated electric field sensor is matched with the number of core wires in the multi-core cable, and the number of the core wires is larger than that of the tubular electrodes.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (9)
1. An array of cable-integrated electric field sensor electrodes, comprising: a multi-core cable and a tubular electrode;
the tubular electrode is sleeved outside the multi-core cable in a penetrating manner; one of the tubular electrodes is connected with one core wire in the multi-core cable; the multi-core cable is used for transmitting ocean electric field information.
2. The cable-integrated electric field sensor electrode array according to claim 1, wherein the tubular electrode is connected to one core wire of the multi-core cable by a wire; the connection modes of the tubular electrode, the lead, the multi-core cable and the lead are welding.
3. The cable-integrated electric field sensor electrode array according to claim 2, wherein the welding points of the tubular electrodes and the wires are treated with epoxy resin water-tightness.
4. The cable-integrated electric field sensor electrode array according to claim 1, further comprising a tubular groove structure; the tubular groove structure is sleeved outside the multi-core cable in a penetrating manner; the tubular groove structure is used for fixing the tubular electrode outside the multi-core cable.
5. The cable-integrated electric field sensor electrode array according to claim 4, further comprising an outer sleeve and a tubular plug; the tubular plugs are fixed at two ends of the outer sleeve through threads; the tubular groove structure and the tubular electrode are both located in the outer sleeve.
6. The cable-integrated electric field sensor electrode array according to claim 5, wherein the outer sleeve is provided with a plurality of small holes for contacting seawater with the tubular electrodes.
7. The cable-integrated electric field sensor electrode array according to claim 1, wherein an inner diameter of the tubular electrode and an outer diameter of the multi-core cable are the same.
8. The cable-integrated electric field sensor electrode array according to claim 1, wherein the tubular electrode is provided in plurality; different said core wires correspond to different said tubular electrodes.
9. A preparation method of an electrode array of a cable integrated electric field sensor is characterized by specifically comprising the following steps:
sleeving a tubular electrode outside a multi-core cable in a penetrating manner, sleeving a tubular groove structure outside the multi-core cable in a penetrating manner, and then inserting the tubular electrode into the tubular groove structure to fix the tubular electrode;
welding one of the tubular electrodes to one of the core wires of the multi-core cable by using a wire;
sleeving an outer sleeve with a small hole outside the tubular electrode, and filling sealant in the outer sleeve;
and fixing two ends of the external sleeve with the tubular plugs through threads, and sealing and curing the threads by using a sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010660276.8A CN111650649A (en) | 2020-07-10 | 2020-07-10 | Cable integrated electric field sensor electrode array and preparation method thereof |
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