Magnetic type non-polarized electrode device

Abstract

The utility model discloses a magnetic attraction type non-polarized electrode device, which belongs to the technical field of geophysical exploration and comprises a non-polarized electrode, a magnetic attraction head A, a lead and a plugging clamp. The non-polarized electrode comprises an electrode body and a magnetic suction head B; the electrode core of the electrode body extends out of the top end of the electrode body; the magnetic suction head B is sleeved outside the electrode core and is fixedly connected to the top end of the electrode body; the magnetic suction head A comprises a conductive column; the conductive column is of a telescopic structure; the magnetic suction head A and the magnetic suction head B are in magnetic suction fit, and a conductive column of the magnetic suction head A abuts against the end of the electrode core. And the plugging clamp is electrically connected with the conductive column of the magnetic suction head A through a wire. According to the utility model, accurate connection between the non-polarized electrode and the connecting line is realized through the magnetic suction head, and a stable signal transmission channel can be formed between the multi-channel cable and the ground.

Description

Technical Field

[0001] The utility model belongs to the technical field of geophysical exploration, and particularly relates to a magnetic adsorption type non-polarizable electrode device. Background Technique

[0002] Whether it is the geophysical electromagnetic observation method with artificial field sources or natural field sources, including: magnetotelluric method, natural field audio magnetotelluric method, controlled source audio magnetotelluric method, and induced polarization method, the electrodes used in this type of observation method are non-polarizable electrodes (refer to the attached drawings Figure 1 ); while the electrodes used in the conventional resistivity method (i.e., resistivity profiling method or resistivity sounding method) and high-density resistivity method are polarizable electrodes (such as copper-nickel alloy electrodes, refer to the attached drawings Figure 2 ).

[0003] The observation system based on the above observation methods usually includes: an instrument host, a power supply, a multi-channel cable, and electrodes, where the multi-channel cable is connected to the instrument host. During observation, the electrodes need to be connected to the multi-channel cable of the observation instrument or the connection terminals of the observation instrument through a connecting wire, so that the earth electrical signal can be transmitted into the instrument host. Usually, the connecting wire includes: a plug-in clip, a wire, and a plug (or connector). For non-polarizable electrodes, the connection method between the connecting wire and the electrode depends on the style of the plug or connector.

[0004] Currently, the connection methods between the connecting wire and the non-polarizable electrode mainly include two types, as Figure 3 shown, the connection methods from top to bottom are: banana plug type, fork type, and bare copper wire head type. The above three connection methods have the following problems respectively:

[0005] (1) Banana plug type: It realizes conduction by directly inserting the banana plug into the wiring hole at the top of the non-polarizable electrode; as time goes by or with multiple pluggings and unpluggings, the elasticity of the banana plug will weaken, resulting in a decrease in the contact area and contact strength between the banana plug and the wiring hole, and due to long-term exposure, the banana plug is prone to corrosion, and sediment and other problems are likely to be mixed into the jack, causing problems such as poor connection and increased resistance, thereby affecting signal conduction;

[0006] (2) Fork type: It realizes conduction by sleeving the fork-shaped connector onto the electrode core at the top of the polarizable electrode and then tightening the lead cap; since the fixation of the fork-shaped connector requires tightening the lead cap, it is easy to slip and become loose after long-term use, resulting in the inability to press the fork-shaped plug tightly; at the same time, due to the need to tighten the lead cap for the fork type installation, the construction efficiency will be reduced.

[0007] Therefore, a non-polarizable electrode device for geophysical electromagnetic observation is needed, which can ensure stable, reliable, and convenient connection between the non-polarizable electrode and the connecting wire. Content of the Utility Model

[0008] In view of this, the present utility model provides a magnetic adsorption type non-polarizing electrode device, which realizes the accurate connection between the non-polarizing electrode and the connecting wire through a magnetic adsorption head, and can form a stable signal transmission channel between the multi-channel cable and the ground.

[0009] The present utility model is realized through the following technical solutions:

[0010] A non-polarizing electrode device, comprising: a non-polarizing electrode, a magnetic adsorption head A, a wire, and a plug-and-play clip;

[0011] The non-polarizing electrode includes: an electrode body and a magnetic adsorption head B; the electrode core of the electrode body extends out of the top end of the electrode body;

[0012] The magnetic adsorption head B is sleeved outside the electrode core and fixedly connected to the top end of the electrode body;

[0013] The magnetic adsorption head A includes: a conductive column; the conductive column is a telescopic structure;

[0014] The magnetic adsorption head A and the magnetic adsorption head B are magnetically matched;

[0015] When the magnetic adsorption head A is connected to the magnetic adsorption head B, the conductive column of the magnetic adsorption head A abuts against the end of the electrode core;

[0016] The plug-and-play clip and the conductive column of the magnetic adsorption head A are electrically connected through a wire.

[0017] Furthermore, the magnetic adsorption head A further includes: a housing A and a magnet ring A;

[0018] The housing A is a columnar structure with a central hole; a magnet ring A is coaxially arranged inside the housing A;

[0019] The conductive column of the magnetic adsorption head A is coaxially sleeved in the central hole of the housing A.

[0020] Furthermore, the conductive column of the magnetic adsorption head A is a spring needle;

[0021] The needle tube of the spring needle is fixedly connected in the central hole of the housing A; the needle tip of the spring needle is installed in the needle tube through a spring; the needle tip of the spring needle abuts against the end of the electrode core.

[0022] Furthermore, the magnetic adsorption head B includes: a housing B and a magnet ring B;

[0023] The housing B is a columnar structure with a central hole, coaxially sleeved outside the electrode core. The housing B is fixedly connected to the top end face of the electrode body;

[0024] A magnet ring B is coaxially arranged inside the housing B; the magnet ring B and the magnet ring A are magnetically matched.

[0025] Further, a circular limiting boss B extending along the outer periphery of the central hole is provided at the center of the top end face of the outer shell B;

[0026] A circular limiting boss A extending along the outer periphery is provided on the bottom end face of the outer shell A; the diameter of the central hole of the outer shell A is larger than the outer diameter of the limiting boss B, and the inner diameter of the limiting boss A is larger than the outer diameter of the outer shell B;

[0027] The central hole of the outer shell A forms a radial limit for the limiting boss B, and the limiting boss A forms a radial limit for the outer shell B.

[0028] Further, both the outer shell B and the outer shell A are made of non-conductive materials.

[0029] Further, a frustum-shaped transition structure is machined on the top end face of the outer shell A, and this transition structure forms a gradually tapering structure at the top of the outer shell A;

[0030] The wire passes through the frustum-shaped structure and is electrically connected to the needle tube of the spring pin.

[0031] Beneficial effects:

[0032] (1) For the magnetic adsorption type non-polarizable electrode device of the present utility model, the magnetic adsorption head B is sleeved outside the electrode core of the electrode body, so that the connection between the non-polarizable electrode and the connecting wire can be realized through the magnetic adsorption cooperation between the magnetic adsorption head B and the magnetic adsorption head A; the magnetic adsorption cooperation method can solve the problem of poor connection between the connecting wire and the non-polarizable electrode, thereby ensuring stable connection between the conductive column of the magnetic adsorption head A and the electrode core of the electrode body; at the same time, the magnetic adsorption cooperation method makes the connection between the non-polarizable electrode and the connecting wire convenient and fast, and the operator can realize the connection with one hand, which can greatly improve the layout efficiency of the non-polarizable electrode device in the observation field; at the same time, since the non-polarizable electrode structure does not need to be screwed, the service life of the electrode, especially the magnetic adsorption head B and the magnetic adsorption head A, can be improved.

[0033] (2) For the magnetic adsorption type non-polarizable electrode device of the present utility model, a magnet ring A is provided inside the outer shell A, which can isolate the magnet ring A from the external environment and protect the magnet ring A from the influence of the external environment; the magnet ring A is coaxial with the outer shell A, and the conductive column is coaxially sleeved in the inner hole of the outer shell A, so that the conductive column and the electrode core can be accurately docked.

[0034] (3) For the magnetic adsorption type non-polarizable electrode device of the present utility model, the conductive column of the magnetic adsorption head A is a spring pin, and the needle head of the spring pin is installed in the needle tube through a spring, and the needle head can accurately abut against the end of the electrode core through the elasticity of the spring, thereby providing a more firm and stable connection, and further ensuring the stability of signal transmission.

[0035] (4) A magnetic adsorption type non-polarizing electrode device of the present utility model. The central hole of the outer shell A forms a radial limit for the limiting boss B, and the limiting boss A forms a radial limit for the outer shell B, which can prevent the magnetic adsorption head B and the magnetic adsorption head A from sliding during the use of the non-polarizing electrode device, can provide a more firm and stable connection, can reduce the signal interruption caused by the loosening of the wire, and thus ensure the stability of the connection; since the non-polarizing electrode device has no jack and the exposed areas of the conductive column of the magnetic adsorption head A and the electrode core of the magnetic adsorption head B are small, it is not easy for dust, sediment, etc. to enter the inside of the device (i.e., between the magnetic adsorption joint A and the magnetic adsorption joint B), which can prevent the corrosion of the spring needle or the electrode core by the external environment, etc., and extend the service life of the non-polarizing electrode device; at the same time, the structures of the magnetic adsorption head A and the magnetic adsorption head B of the non-polarizing electrode device are convenient for wiping, which is beneficial to storage and collection.

[0036] (5) A magnetic adsorption type non-polarizing electrode device of the present utility model. Both the outer shell A and the outer shell B are made of non-conductive materials, which can protect the conductive column (i.e., the spring needle) of the magnetic adsorption head A and the electrode core of the magnetic adsorption head B from the influence of the external environment, and can also reduce the mixing of external current, so as to ensure the stability of the electrical signal; since the magnet ring A is arranged inside the non-conductive outer shell A and is wrapped by the outer shell A, and the magnet ring B is arranged inside the non-conductive outer shell B and is wrapped by the outer shell B, it can protect the integrity of the magnet and also avoid the exposure of the gap between the magnet and the outer shell, thus preventing the entry of dust.

[0037] (6) A magnetic adsorption type non-polarizing electrode device of the present utility model. The top end face of the outer shell A is processed with a frustum-shaped transition structure, and the transition structure can protect the wire from being broken. Description of the Drawings

[0038] Figure 1 is a structural schematic diagram of an existing non-polarizing electrode;

[0039] Figure 2 is a structural schematic diagram of a polarizing electrode;

[0040] Figure 3 are two common connecting wires for connecting the non-polarizing electrode and the multi-channel cable;

[0041] Figure 4 is a structural schematic diagram of the non-polarizing electrode of the present utility model;

[0042] Figure 5 is a structural schematic diagram of the connecting wire of the present utility model;

[0043] Figure 6 is a structural schematic diagram of the magnetic adsorption head A of the present utility model;

[0044] Among them, 1 - electrode body, 101 - electrode core, 2 - magnetic head B, 201 - housing B, 202 - magnet ring B, 3 - magnetic head A, 301 - housing A, 302 - spring pin, 303 - magnet ring A, 4 - wire, 5 - plug - and - unplug clip. Detailed implementation mode

[0045] The following combines the accompanying drawings and gives examples to describe the present utility model in detail.

[0046] Example 1:

[0047] This example provides a magnetic - absorption type non - polarized electrode device for signal transmission between the geomagnetic field and the observation system.

[0048] The non - polarized electrode device includes: a non - polarized electrode and a connecting wire.

[0049] As Figure 4 shown, the non - polarized electrode includes: an electrode body 1 and a magnetic head B 2.

[0050] The electrode core 101 in the electrode body 1 extends out of the top end of the electrode body 1.

[0051] The magnetic head B 2 includes: a housing B 201 and a magnet ring B 202. The housing B 201 is a columnar structure with a central hole and is coaxially sleeved outside the electrode core 101. The center of the top - end face of the housing B 201 extends a circular limiting boss B along the outer circumference of its central hole. The housing B 201 is fixedly connected to the top end of the electrode body 1. The thickness of the housing B 201 (including the height of the limiting boss B) is less than or equal to the length that the electrode core 101 extends out of the top end of the electrode body 1. A magnet ring B 202 is coaxially arranged inside the housing B 201. The housing B 201 is made of a non - conductive material to reduce the entry of external interference current. In this example, the material of the housing B 201 is preferably TPU (i.e., thermoplastic polyurethane elastomer) material, and the housing B 201 can be wrapped outside the magnet ring B 202 by injection molding. The TPU material can improve the wear resistance and corrosion resistance of the magnetic head B 2, prevent the electrode core 101 from being affected by the external environment (such as rusting, etc.), and reduce the mixing of external interference current. In this example, the material of the magnet ring B 202 is preferably neodymium iron boron strong magnetic material.

[0052] As Figure 5 shown, the connecting wire includes: a magnetic head A 3, a wire 4, and a plug - and - unplug clip 5 (using the plug - and - unplug clip in the prior art).

[0053] As Figure 6 shown, the magnetic head A 3 includes: a housing A 301, a spring pin 302 (i.e., pogo pin), and a magnet ring A 303;

[0054] The housing A301 is a columnar structure with a central hole. An annular limiting boss A extends along the outer periphery of the bottom end face of the housing A301. The diameter of the central hole of the housing A301 is greater than the outer diameter of the limiting boss B, and the inner diameter of the limiting boss A is greater than the outer diameter of the housing B201. A magnet ring A303 is coaxially arranged inside the housing A301, and the magnet ring A303 is magnetically coupled with the magnet ring B202. The housing A301 is made of a non-conductive material to reduce the entry of external interfering currents.

[0055] The spring pin 302 is coaxially sleeved in the central hole of the housing A301. The spring pin 302 serves as the conductive column of the magnetic attraction head A3. The spring pin 302 includes a needle tube, a spring, and a needle tip. The needle tube of the spring pin 302 is fixedly connected in the central hole of the housing A301. The needle tip of the spring pin 302 is installed in the needle tube through the spring, and the needle tip reciprocates along the axial direction of the needle tube as the spring expands and contracts. The needle tip of the spring pin 302 faces the bottom end face of the housing A301.

[0056] The magnetic attraction head A3 is adsorbed on the magnetic attraction head B2 through the magnetic coupling between the magnet ring A303 and the magnet ring B202. During adsorption, the limiting boss B extends into the central hole of the housing A301. The spring pin 302 abuts against the end of the electrode core 101 through the elastic force of the spring. After adsorption, the upper end face of the housing B201 fits with the lower end face of the housing A301, the spring pin 302 maintains a connection with the electrode core 101, the inner hole of the housing A301 forms a radial limit for the limiting boss B, and the limiting boss A forms a radial limit for the housing B201, which can prevent the sliding between the magnetic attraction head B2 and the magnetic attraction head A3 during the use of the device, thus affecting the connection stability.

[0057] In this embodiment, the material of the housing A301 is preferably TPU (i.e., thermoplastic polyurethane elastomer) material, and the housing A301 can be wrapped outside the magnet ring A303 by injection molding. The TPU material can improve the wear resistance and corrosion resistance of the magnetic attraction head A3, prevent the spring pin 302 from being affected by the external environment (such as getting wet and rusting), and reduce the mixing of external interfering currents. In this embodiment, the material of the magnet ring A303 is preferably neodymium iron boron strong magnetic material. The end face size of the magnet ring A303 in this embodiment is the same as that of the magnet ring B202.

[0058] The head of the plug-and-play clip 5 is electrically connected to the multi-channel cable of the instrument host, and the tail of the plug-and-play clip 5 is electrically connected to the needle tube of the spring pin 302 through the wire 4. In this embodiment, the wire 4 is a single-core multi-strand flexible copper wire. The wire 4 is connected to the spring pin 302 by soldering.

[0059] After installation, the earth electrical signals collected by the non-polarizable electrode are sequentially transmitted to the instrument mainframe through the spring needle 302, the wire 4, the plug-in clip 5 and the multi-channel cable, so as to conduct geophysical electromagnetic observations.

[0060] Embodiment 2:

[0061] This embodiment provides a magnetic adsorption type non-polarizable electrode device, which is based on the non-polarizable electrode device in Embodiment 1. A frustum-shaped transition structure is machined on the top end face of the outer shell A301, and this frustum-shaped transition structure forms a gradually tapering structure at the top of the outer shell A301. One end of the wire 4 passes through the frustum-shaped structure and is electrically connected to the needle tube of the spring needle 302. The frustum-shaped structure is used to protect the wire 4 and prevent the wire 4 from breaking during use.

[0062] In summary, the above are only the preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A magnetic adsorption type non-polarizable electrode device, characterized in that, Including: A non-polarizable electrode, a magnetic suction head A (3), a wire (4), and a plug-in clip (5); The non-polarizable electrode includes: an electrode body (1) and a magnetic suction head B (2); the electrode core (101) of the electrode body (1) extends out of the top end of the electrode body (1); The magnetic suction head B (2) is sleeved outside the electrode core (101) and fixedly connected to the top end of the electrode body (1); The magnetic suction head A (3) includes: a conductive column; the conductive column is a telescopic structure; The magnetic suction head A (3) and the magnetic suction head B (2) are magnetically coupled; When the magnetic suction head A (3) is connected to the magnetic suction head B (2), the conductive column of the magnetic suction head A (3) abuts against the end of the electrode core (101); The plug-in clip (5) and the conductive column of the magnetic suction head A (3) are electrically connected through the wire (4).

2. The magnetically attracted non-polarizable electrode device according to claim 1, wherein, The magnetic suction head A (3) further includes: a housing A (301) and a magnet ring A (303); The housing A (301) is a columnar structure with a central hole; a magnet ring A (303) is coaxially arranged inside the housing A (301); The conductive column of the magnetic suction head A (3) is coaxially sleeved in the central hole of the housing A (301).

3. The magnetically-attracted non-polarizing electrode device according to claim 2, wherein, The conductive column of the magnetic suction head A (3) is a spring pin (302); The needle tube of the spring pin (302) is fixedly connected in the central hole of the housing A (301); the needle head of the spring pin (302) is installed in the needle tube through a spring; the needle head of the spring pin (302) abuts against the end of the electrode core (101).

4. The magnetically attracted non-polarizable electrode device according to claim 2, characterized in that, The magnetic suction head B (2) includes: a housing B (201) and a magnet ring B (202); The housing B (201) is a columnar structure with a central hole, coaxially sleeved outside the electrode core (101); the housing B (201) is fixedly connected to the top end face of the electrode body (1); A magnet ring B (202) is coaxially arranged inside the housing B (201); the magnet ring B (202) and the magnet ring A (303) are magnetically coupled.

5. The magnetically attracted non-polarizable electrode device according to claim 4, wherein A circular limiting boss B extends along the outer periphery of the central hole on the center of the top end face of the housing B (201); A circular limiting boss A extends along the outer periphery of the bottom end face of the housing A (301); the diameter of the central hole of the housing A (301) is larger than the outer diameter of the limiting boss B, and the inner diameter of the limiting boss A is larger than the outer diameter of the housing B (201); The central hole of the housing A (301) forms a radial limit for the limiting boss B, and the limiting boss A forms a radial limit for the housing B (201).

6. The magnetically attracted non-polarizable electrode device according to claim 4 or 5, characterized in that, Both the housing B (201) and the housing A (301) are made of non-conductive materials.

7. The magnetically attracted non-polarizable electrode device according to any one of claims 2-5, characterized in that, A frustum-shaped transition structure is processed on the top end face of the housing A (301), and this transition structure forms a gradually tapering structure at the top of the housing A (301); The wire (4) passes through the frustum-shaped structure and is electrically connected to the needle tube of the spring pin (302).

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