Anti-interference geophysical prospecting measurement equipment

Abstract

The invention relates to the technical field of geophysical prospecting equipment, in particular to an anti-interference geophysical prospecting magnetic method instrument measuring device which comprises a power source and a magnetic method instrument, a demagnetization cavity is arranged below the magnetic method instrument, and a demagnetization part is arranged in the demagnetization cavity and used for demagnetizing the interior of the used magnetic method instrument. The demagnetizing component comprises a controller, a fixed plate and a plurality of coils, the plurality of coils are arranged on the fixed plate, and the controller is respectively connected with the power supply and the plurality of coils so as to control the coils at different positions to supply power and control the magnitude of current, form magnetic fields with different intensities at different positions and correspondingly offset the magnetism in the magnetic method instrument. According to the invention, targeted demagnetization can be carried out aiming at the magnetic field distribution in the magnetic method instrument.

Description

Technical Field

[0001] The invention relates to the technical field of geophysical exploration equipment, and in particular to an interference-proof geophysical exploration magnetic instrument measuring device. Background Art

[0002] Geophysical prospecting is one of the geophysical exploration methods. Magnetic field interference occurs in many areas because underground rocks and ores have different magnetic properties. Geophysical magnetism can be used to detect whether there are magnetic ores and rocks in the local area. Instruments are used to discover and explore these places in order to find magnetic ore bodies and study geological structures.

[0003] The magnetometer is an important instrument used in geological surveys. It is mainly used to measure the magnetic susceptibility of exposed rocks, manual sampling or rapid scanning of core magnetic susceptibility. The magnetometer is simple to operate, single-button operation, automatic calculation, sensitive and accurate. With its simple operation, fast speed and accurate analysis, it has become an indispensable tool for geologists to analyze rock samples.

[0004] Due to the characteristics of the magnetic instrument during measurement, some components inside the magnetic instrument will generate magnetism and remain, which will affect the accuracy of the next measurement result. The magnetic components inside the magnetic instrument need to be demagnetized. Generally, an external demagnetization device is used to demagnetize the magnetic components inside the magnetic instrument. The demagnetization device has a fixed magnetic field strength, but some components inside the magnetic instrument are magnetic and the magnetic field strength is inconsistent, which makes the magnetic field distribution inside the magnetic instrument uneven and the magnetic field strength inconsistent. It is difficult for the external demagnetization device to specifically demagnetize the magnetic components inside the magnetic instrument, and it will also make the originally non-magnetic components magnetic. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides an anti-interference geophysical surveying device, which can specifically demagnetize the magnetic field distribution inside a magnetometer.

[0006] The technical solution of the present invention includes a power supply and a magnetic instrument. The magnetic instrument is placed in a storage box. A demagnetization chamber is provided in the storage box. The demagnetization chamber is provided with a demagnetization component for demagnetizing the inside of the used magnetic instrument. The demagnetization component includes a controller, a fixed plate and a plurality of coils. The plurality of coils are arranged on the fixed plate. The controller is respectively connected to the power supply and the plurality of coils. The controller controls the power supply and current size to the coils at different positions, thereby forming magnetic fields of different intensities at different positions, and correspondingly offsetting the magnetism inside the magnetic instrument.

[0007] Furthermore, a plurality of coils are arranged on the fixed plate at equal intervals.

[0008] Furthermore, a partition is provided between the demagnetization component and the magnetic instrument to prevent the coil of the demagnetization component from affecting the magnetic field of the magnetic instrument.

[0009] Furthermore, the partition includes an upper plate, a lower plate and a shielding plate, and the shielding plate is located between the upper plate and the lower plate.

[0010] Furthermore, the shielding plate is slidably arranged between the upper plate and the lower plate to open or close the passage between the magnetometer and the coil of the demagnetization component.

[0011] Furthermore, the distance between the plurality of coils and the magnetic apparatus is 5 to 10 centimeters, so as to prevent the magnetic field generated when the coils are energized from damaging the electronic components inside the magnetic apparatus.

[0012] Furthermore, the demagnetization component also includes a heat dissipation unit for cooling the interior of the demagnetization chamber, and the heat dissipation unit is an air-cooled radiator or a water-cooled radiator.

[0013] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art:

[0014] After the magnetic instrument is used, some of the internal components will generate magnetism and remain. The controller turns on the coil at the corresponding position below the magnetic instrument with the magnetic component. Since the magnetic field strength of the components is inconsistent, the magnetic field of the demagnetization component can be adjusted by controlling the current of the corresponding coil. The reverse magnetic field of the demagnetization component interacts with the magnetic field of the magnetic component of the magnetic instrument to achieve the demagnetization effect. Compared with the prior art, the present invention can specifically demagnetize the magnetic components inside the magnetic instrument.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the structure of a geophysical surveying device according to one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the connection structure of a fixing plate and a coil in one embodiment of the present invention;

[0019] Figure 3 for Figure 1 Enlarged view of part A.

[0020] Reference numerals:

[0021] 1. Storage box; 2. Magnetic instrument; 3. Controller; 4. Fixed plate; 5. Coil; 6. Upper plate; 7. Lower plate; 8. Shielding plate; 9. Elastic part; 10. Handle. DETAILED DESCRIPTION

[0022] A specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation.

[0023] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the technical solutions of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the embodiments of the present invention, unless otherwise specified, “plurality” means two or more.

[0025] like Figures 1 to 3 As shown, the present invention provides an interference-proof geophysical surveying device, including a power supply and a magnetometer 2. A demagnetization chamber is provided below the magnetometer 2. The demagnetization chamber is provided with a demagnetization component for demagnetizing the inside of the used magnetometer 2. The demagnetization component includes a controller 3, a fixed plate 4 and a plurality of coils 5. The plurality of coils 5 are arranged on the fixed plate 4. The controller 3 is respectively connected to the power supply and the plurality of coils 5. The controller 3 controls the power supply and current size to the coils 5 at different positions, thereby forming magnetic fields of different intensities at different positions, and correspondingly offsetting the magnetism inside the magnetometer 2.

[0026] After the magnetic apparatus 2 is used, some of the internal components will generate magnetism and remain. The controller 3 turns on the coil 5 at the corresponding position of the magnetic component below the magnetic apparatus 2. Since the magnetic field strength of the components is inconsistent, the magnetic field of the demagnetization component can be adjusted by controlling the current of the corresponding coil 5. The reverse magnetic field of the demagnetization component interacts with the magnetic field of the magnetic component of the magnetic apparatus 2 to achieve the demagnetization effect. The present invention can specifically demagnetize the magnetic components inside the magnetic apparatus 2.

[0027] It is understandable that the magnetic instrument 2 is usually used outdoors and needs to be placed in a storage box 1 for carrying. The present invention opens a cavity at the bottom of the storage box 1 and provides a demagnetization component, so there is no need to carry a demagnetization device separately.

[0028] It can be understood that the present invention adopts a fixing plate 4, a plurality of coils 5 and a controller 3, and the overall structure is simple and light in weight, which does not increase the burden on outdoor workers.

[0029] Optionally, the fixing plate 4 is preferably made of a non-conductive, high temperature resistant material, such as polyphenylene sulfide (PPS), and the present invention does not impose any limitation on this.

[0030] Optionally, the coil 5 may be fixed on the fixing plate 4 via a bracket, or may be embedded in the fixing plate 4, and the present invention does not impose any limitation on this.

[0031] It can be understood that arranging the coils 5 at equal intervals can be applicable to most models of magnetic instruments 2. It is only necessary to detect in advance which components inside each magnetic instrument 2 generate magnetism and where they are distributed, and then input the information into the controller 3. When demagnetizing, it is only necessary to select the corresponding model in the controller 3, and there is no need to set up a demagnetization device for each magnetic instrument 2.

[0032] In the embodiment provided by the present invention, it is preferred to embed the coil 5 on the fixing plate 4, which can save internal space, simplify the internal structure, and avoid the production line tilting when the coil 5 is placed outside due to bumps during carrying.

[0033] Furthermore, in the embodiment provided by the present invention, a plurality of coils 5 are arranged on the fixing plate 4 at equal intervals.

[0034] It can be understood that arranging the coils 5 at equal intervals is to facilitate the controller 3 to control the supply of power to the corresponding coils 5 and adjust the current.

[0035] It can be understood that the present invention adopts the principle of electromagnetism. The magnetic field generated by the coil 5 has a strength related to the current. The larger the current, the stronger the magnetic field. Although the overall magnetic properties of the magnetic instrument 2 components are not very strong, the components have different strengths and weaknesses, and need to be demagnetized in a targeted manner. At this time, the size of the generated magnetic field can be adjusted by controlling the current size to achieve demagnetization and improve demagnetization efficiency.

[0036] Furthermore, in the embodiment provided by the present invention, a partition is provided between the demagnetization component and the magnetometer 2 to prevent the coil 5 of the demagnetization component from generating a magnetic field influence on the magnetometer 2 .

[0037] It can be understood that the coil 5 itself is made of metal and will affect the magnetic field. Providing a partition with a shielding effect can ensure that the magnetic instrument 2 is not affected by the coil 5 when in use.

[0038] Further, such as Figure 3 As shown, in the embodiment provided by the present invention, the partition includes an upper plate 6 , a lower plate 7 and a shielding plate 8 , and the shielding plate 8 is located between the upper plate 6 and the lower plate 7 .

[0039] Furthermore, in the embodiment provided by the present invention, the shielding plate 8 is slidably disposed between the upper plate 6 and the lower plate 7 to open or close the passage between the magnetometer 2 and the coil 5 of the demagnetization component.

[0040] It can be understood that in order to ensure the demagnetization efficiency, it is best to place the magnetic instrument 2 directly above the coil 5, which can quickly demagnetize. Therefore, a partition is required to not only support the magnetic instrument 2, but also have a shielding effect. Therefore, the partition is arranged into three layers, which can support the magnetic instrument 2 while also being able to flexibly move the shielding plate 8.

[0041] Optionally, the shielding plate 8 is connected between the upper plate 6 and the lower plate 7 via a slide rail.

[0042] Optionally, in order to facilitate the staff to slide the shielding plate 8, one side of the shielding plate 8 extends out of the storage box 1, and a handle 10 is provided on the side.

[0043] Optionally, the upper plate 6 and the lower plate 7 are made of materials that do not affect the magnetic field, such as glass plates, acrylic plates, etc.

[0044] The present invention prefers a glass plate, which can allow the magnetic field to pass through and act on the magnetic instrument 2. However, it should be noted that the use of the glass plate requires the provision of shock absorption to prevent the glass plate from breaking due to bumps. Therefore, the present invention provides an elastic member 9 at the connection between the glass plate and the storage box 1, which can effectively avoid this problem.

[0045] Optionally, the elastic member 9 may be a spring or a shock-absorbing rubber to play a protective role.

[0046] Furthermore, in the embodiment provided by the present invention, the distance between the plurality of coils 5 and the magnetometer 2 is 5 cm to 10 cm, so as to prevent the magnetic field generated by the coils 5 at the moment of being energized from damaging the electronic components inside the magnetometer 2.

[0047] Optionally, the gap between the upper plate 6 and the lower plate 7 of the partition can be set between 5 cm and 10 cm, without the need for additional space, thereby reducing the volume of the detection equipment.

[0048] Furthermore, in the embodiment provided by the present invention, the degaussing component also includes a heat dissipation unit for cooling the interior of the degaussing chamber, and the heat dissipation unit is an air-cooled radiator or a water-cooled radiator.

[0049] It can be understood that during the electromagnetization process, the coil 5 will generate a large amount of heat energy. To avoid the aging problem of the demagnetization components, the interior of the demagnetization chamber is cooled to delay aging.

[0050] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0051] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and the embodiments. It can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and equivalent scope, the present invention is not limited to the specific details and the illustrations shown and described here.

Claims

1. An anti-interference geophysical surveying device, comprising a power supply and a magnetometer (2), wherein the magnetometer (2) is placed in a storage box (1), characterized in that: The storage box (1) is provided with a demagnetization chamber, and the demagnetization chamber is provided with a demagnetization component; The demagnetization component comprises a controller (3), a fixing plate (4) and a plurality of coils (5), wherein the plurality of coils (5) are arranged on the fixing plate (4), and the controller (3) is respectively connected to a power source and the plurality of coils (5). The controller (3) controls the supply of power to the coils (5) at different positions and controls the magnitude of the current, thereby forming magnetic fields of different strengths at different positions, thereby correspondingly offsetting the magnetism inside the magnetic instrument (2).

2. The anti-interference geophysical measurement equipment according to claim 1, characterized in that: A plurality of coils (5) are arranged at equal intervals on the fixing plate (4).

3. The anti-interference geophysical surveying equipment according to claim 2, characterized in that: A partition is provided between the demagnetization component and the magnetometer (2) to prevent the coil (5) of the demagnetization component from affecting the magnetic field of the magnetometer (2).

4. The anti-interference geophysical surveying equipment according to claim 3, characterized in that: The partition comprises an upper plate (6), a lower plate (7) and a shielding plate (8), wherein the shielding plate (8) is located between the upper plate (6) and the lower plate (7).

5. The anti-interference geophysical surveying equipment according to claim 4, characterized in that: The shielding plate (8) is slidably arranged between the upper plate (6) and the lower plate (7) to open or close the passage between the magnetometer (2) and the coil (5) of the demagnetization component.

6. The anti-interference geophysical surveying equipment according to claim 2, characterized in that: The distance between the plurality of coils (5) and the magnetometer (2) is 5 to 10 centimeters, so as to prevent the magnetic field generated by the coils (5) at the moment of power-on from damaging the electronic components inside the magnetometer (2).

7. The anti-interference geophysical surveying equipment according to claim 2, characterized in that: The degaussing component also includes a heat dissipation unit for cooling the interior of the degaussing chamber; The heat dissipation unit is an air-cooled radiator or a water-cooled radiator.

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