Cable and electrode connection protection device for electrical prospecting instrument

Abstract

The utility model relates to the technical field of geophysical electrical prospecting, in particular to an electrical prospecting instrument cable and electrode connection protection device which comprises a waterproof outer shell, the waterproof outer shell comprises two shell bodies assembled in a half-and-half mode, and a spring connection structure is arranged between the two shell bodies. The spring connecting structure can control the two shells to be opened or closed, the two shells are respectively and fixedly provided with a metal connecting piece, and the two shells are fastened by arranging a buckle structure. The utility model has the advantages that: 1) the cable does not need to be transformed, and the connection state of the electrode and the cable can be ensured and stabilized when the environment is observed to change (such as raining, snowing and the like) by additionally arranging the waterproof insulating shell at the joint of the electrode and the cable; 2) the type of a collection electrode is not limited, the device can be simultaneously applied to polarized or non-polarized electrodes, the expansion capability is strong, and the device can be recycled and is convenient to disassemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to geophysical electrical prospecting technical field, concretely relates to a kind of electrical prospecting instrument cable and electrode connection protection device. BACKGROUND

[0002] Resistivity method is one of the commonly used detection methods in present engineering geophysical prospecting, which can effectively serve engineering geological survey, goaf detection and other underground space detection work. The mainstream high-density electrical prospecting instrument at present is mainly distributed instrument, and its structure is that system host is connected with multi-core cable connected with multiple electrodes. In order to facilitate the connection of electrodes, the multi-core cable generally has multiple connection modules, and the remaining positions are waterproof and dustproof. This connection module can be connected with the wire on the polarized electrode or the non-polarized electrode. But in order to facilitate work, the part connected with the electrode in the connection module is open metal (mostly copper alloy or iron alloy).

[0003] And resistivity method working environment is often accompanied by high humidity, high salt and other conditions, which can easily rust the exposed part of the connection module and the electrode extension line connected therewith. This not only limits the power supply current, but also affects the electrode connection, thereby affecting the detection depth and observation results. During acquisition, the connection module is usually placed on the ground, and the insulation condition is poor, which leads to the increase of error in the observation system. In today's increasingly complex electromagnetic noise, the identification difficulty of electrical anomaly increases. SUMMARY

[0004] The utility model aims at the deficiency of prior art, and provides a kind of electrical prospecting instrument cable and electrode connection protection device, under the premise of not changing original cable and electrode, increase the protection device of cable interface and electrode, facilitate actual operation, prolong the service life of cable, stabilize observation system, reduce observation system error.

[0005] The utility model is realized by the following technical schemes:

[0006] A kind of electrical prospecting instrument cable and electrode connection protection device, characterized by: including waterproof shell, the waterproof shell includes two shell bodies of half type assembly, spring connecting structure is arranged between two shell bodies, the spring connecting structure can control the opening or closure between two shell bodies, two shell bodies are respectively fixedly provided with metal tab, two shell bodies are buckled by being provided with buckle structure.

[0007] The waterproof shell material can be rubber, polyethylene or other insulating waterproof materials.

[0008] The inner wall of the waterproof shell is attached with a metal film, such as copper or iron. The metal film is in communication with the metal tab, improving the connectivity between the electrode and the cable and expanding the application scenarios of the connection device.

[0009] The joints between the shells can be a straight joint, a broken line structure or a stepped joint to meet the waterproof performance and various design requirements.

[0010] The spring connection structure is passed through by the rotating shaft, and its main purpose is to connect and clamp the waterproof housing for easy use.

[0011] An anti-slip module is provided on the outside of the handle portion of the spring connection structure, which further facilitates use.

[0012] The shape of the metal contact matches the connector on the cable to ensure stable contact. The metal contact is made of a conductive metal such as copper or silver. Considering the relative softness of pure metal contacts, a strong, retaining material such as polyethylene can be used to wrap the metal contact, or a high-strength, highly conductive alloy can be used as the metal contact material. To further ensure a stable connection, the spring connecting the contact to the housing is also made of a conductive metal and connects the contact to the spring.

[0013] The clip structure can be integrally formed with the housing using the same material. However, considering factors such as mold opening during production, the clip can also be made of a pre-made elastic pipe clip, with no special material requirements.

[0014] Advantages of this utility model:

[0015] 1) This connection device does not require cable modification. By adding a waterproof insulating shell at the connection between the electrode and the cable, the connection between the electrode and the cable can be ensured and stabilized when the observation environment changes (such as rain or snow).

[0016] 2) The device is not limited to the type of collection electrodes and can be applied to polarized or non-polarized electrodes at the same time, with strong scalability.

[0017] 3) The device can be recycled and reused and is easy to disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic structural diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the structure of the utility model from the left side;

[0020] Figure 3 It is a schematic structural diagram of the utility model from the right side;

[0021] Figure 4 This is a schematic diagram of the central axial section of the utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the utility model from a top view;

[0023] Figure 6 This is a schematic diagram of the structure of the utility model when viewed from above;

[0024] Figure 7 It is a fixed structure section view schematic diagram in the utility model. DETAILED DESCRIPTION

[0025] The features and other related features of the utility model are further described in detail below by examples with reference to the drawings, so as to facilitate the understanding of the skilled in the art:

[0026] As Figures 1-7 shown, the reference numbers 1-6 in the figure represent: waterproof housing 1, spring connection structure 2, metal tab 3, buckle structure 4, spring 5, clamping pipe 6.

[0027] Example one: as Figures 1 to 7 shown, the electrode method cable and electrode connection protection device in the embodiment is used for connecting non-polarizable electrodes and cables, and the specific steps are as follows:

[0028] (1) The wire of the non-polarizable electrode is wound on the exposed interface of the cable, and the exposed part of the wire is ensured to be in close contact with the cable interface, so as to establish a stable connection.

[0029] (2) The two shells of the waterproof housing 1 are opened by the spring connection structure 2, and are sleeved on the exposed interface of the cable and the non-polarizable electrode, and the metal tab 3 in the waterproof housing 1 is closely attached to the cable interface and the exposed part of the electrode wire.

[0030] (3) The non-polarizable electrode is placed in the clamping pipe 6 at the lower part of the waterproof housing 1, and is clamped by the buckle structure 4 to fix the non-polarizable electrode, at this time the spring 5 will further fix the metal tab 3 and the cable interface.

[0031] (4) The non-polarizable electrode is placed in the measured area as required.

[0032] Example two: the electrode method cable and electrode connection protection device in the embodiment is used for connecting polarizable electrodes (such as steel electrodes) and cables, and the polarizable electrode is usually an elongated column of conductive metal material, and the specific steps are as follows:

[0033] (1) The polarizable electrode is connected with the cable interface by wire or metal wire, and the polarizable electrode is ensured to be in close contact with the cable interface to establish a stable connection.

[0034] (2) The connection device is sleeved outside the polarizable electrode and the cable interface, and the metal tab 3 is ensured to be attached to the cable interface.

[0035] (3) The polarizable electrode is placed in the clamping pipe 6 at the lower part of the waterproof housing 1, and is clamped by the buckle structure 4, at this time the spring 5 will further fix the metal tab 3 and the cable interface, and automatically fix the polarizable electrode.

[0036] (4) The polarization electrode is placed in the area to be measured according to the requirement.

[0037] Although the above embodiments have been described in detail with reference to the accompanying drawings, those skilled in the art can realize that various improvements and changes can be made to the present application without departing from the scope defined by the claims, and therefore, detailed description is not given here.

Claims

1. A device for protecting the connection between the cable and the electrode of an electrical instrument, characterized by: It includes a waterproof shell, which includes two shells assembled in half. A spring connection structure is provided between the two shells. The spring connection structure can control the opening or closing of the two shells. The two shells are respectively fixed with metal tabs, and the two shells are fastened by providing a snap structure.

2. The electrical instrument cable and electrode connection protection device according to claim 1, characterized in that: The inner wall of the waterproof shell is mounted with a metal film, which is communicated with the metal connecting piece.

3. The device for protecting the connection between the cable and the electrode of an electrical instrument according to claim 1, characterized in that: The joint between the shells can be a straight joint, a broken line joint or a stepped joint.

4. The device for protecting the connection between the cable and the electrode of an electrical instrument according to claim 1, characterized in that: An anti-slip module is provided on the outside of the handle portion of the spring connection structure.

5. The device for protecting the connection between the cable and the electrode of an electrical instrument according to claim 1, characterized in that: The shape of the metal contact piece is consistent with the shape of the interface on the cable.

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