CN212540214U - Multi-polar-moment soil resistivity testing device - Google Patents

Abstract

The utility model discloses a multipolar moment soil resistivity test device, include: soil resistivity measuring apparatu, electrode change over switch case, cable and measuring electrode, soil resistivity measuring apparatu connects electrode change over switch case, the inside a plurality of electrode change over switches that are equipped with of electrode change over switch case, the outside is equipped with display area and control area, the display area is the display screen, the control area is equipped with control button, measuring electrode is equipped with a plurality ofly, electrode change over switch passes through cable junction measuring electrode, set up signal receiver in the measuring electrode, electrode change over switch control is rather than the disconnected of the measuring electrode power and the signal of being connected. The utility model discloses can once accomplish the measuring electrode among the measurement process and lay, can effectually carry out the scanning measurement of multiple electrode arrangement, therefore can obtain richer geological information about earth's electricity section structural feature, with low costs, efficient, information is abundant, easy operation.

Description

Multi-polar-moment soil resistivity testing device

The technical field is as follows:

the utility model relates to a power transmission and transformation engineering technical field specifically is a multipolar moment soil resistivity testing arrangement.

Background art:

in power transmission and transformation engineering, the soil resistivity and the ground resistance of a grounding system are often measured, a wenner quadrupole method is usually adopted for measuring the soil resistivity, the principle of the method is shown in fig. 1, in order to obtain reasonable data of the soil resistivity, the interpolar distance a is preferably changed, a relation curve rho between the soil resistivity rho and the interpolar distance a is obtained, the interpolar distance can be 5, 10, 15, 20, 30 and 40m … …, the maximum interpolar distance amax can be two thirds of the maximum diagonal line of a grounding device, the distance is about 250m in a 220kV substation, the electrode distance needs to be changed for multiple times in the measurement process, the measurement efficiency is low, and if the measurement method with unequal spacing needs to be changed, the electrode positions need to be rearranged, and great inconvenience is brought. If the resistivity is measured by adopting an unequal-interval measurement method, the principle is shown in fig. 2 when the measured result is verified, the electrode needs to be repositioned when the secondary measurement is carried out, the workload is equivalent to that of adopting a wenner quadrupole method, and the overall efficiency is low.

Therefore, the above method needs to change the positions of the four electrodes every time of measurement, resulting in slow measurement efficiency. Meanwhile, position errors easily occur when the electrode position is changed, if a certain group of data is found to jump when the measurement result is checked, the experimental electrode needs to be installed at the experimental position again when measurement is needed, and verification is very inconvenient.

The utility model has the following contents:

an object of the utility model is to provide a multipolar moment soil resistivity testing arrangement to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a multipole moment soil resistivity test apparatus comprising: soil resistivity measuring apparatu, electrode change over switch case, cable, and measuring electrode, soil resistivity measuring apparatu connects electrode change over switch case, the inside a plurality of electrode change over switches that are equipped with of electrode change over switch case, the outside is equipped with display area and control area, the control area is equipped with control button, measuring electrode is equipped with a plurality ofly, electrode change over switch passes through cable junction measuring electrode, set up signal receiver in the measuring electrode, electrode change over switch is used for controlling rather than the disconnected of the measuring electrode power and the signal of being connected.

As a further aspect of the present invention: set up the connection terminal on measuring electrode's the metal cap, set up the electric conductor of being connected with the inside wire of electrode in the connection terminal to set up the magnet ring at the connection terminal inner wall, the end of cable is connected with the lug, and the lug bottom sets up the conducting strip that corresponds with the electric conductor position, and the lug has ferromagnetism metal shell.

As a further aspect of the present invention: the interior of the wire holder and the wire connecting piece shell are provided with matched fool-proof structures.

As a further aspect of the present invention: the cable adopts a multi-core shielding cable.

As a further aspect of the present invention: the display area is a display screen.

The utility model has the advantages that: the utility model discloses can once only accomplish the measuring electrode among the measurement process and lay, can effectually carry out the scanning measurement of multiple electrode arrangement mode, therefore can obtain richer geological information about earth's electricity section structural feature to with low costs, efficient, information is abundant, easy operation, the exploration ability is showing and is improving, it is convenient to maintain, the low price, electrode change over switch quantity in the electrode change over switch case can expand in addition, conveniently measure bigger utmost point apart from and more measuring methods.

Description of the drawings:

in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of a conventional quadrupole method for measuring soil resistivity;

FIG. 2 is a schematic diagram of a conventional unequal-spacing measurement for measuring soil resistivity;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a schematic structural diagram of a measuring electrode according to the present invention;

fig. 5 is a schematic view of the end face structure of the middle lug of the present invention.

In the figure, 1, a soil resistivity measuring instrument; 2. an electrode transfer switch box; 3. a cable; 4. a measuring electrode; 41. a wire holder 5, a wire connecting piece; 51. a conductive sheet; 52. fool-proof structure.

The specific implementation mode is as follows:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 3, in the embodiment of the utility model, a multipolar moment soil resistivity testing arrangement includes: soil resistivity measuring apparatu 1, electrode change over switch case 2, cable 3, measuring electrode 4, soil resistivity measuring apparatu 1 connection electrode change over switch case 2, 2 inside a plurality of electrode change over switches that are equipped with of electrode change over switch case, the outside is equipped with display area 21 and control area 22, display area 21 is the display screen, control area 22 is equipped with control button, measuring electrode 4 is equipped with a plurality ofly, electrode change over switch passes through cable 3 and connects measuring electrode 4, cable 3 adopts multicore shielded cable, and one of them core is used for signal transmission, and two cores are used for being connected with measuring voltage utmost point, current utmost point.

The measuring electrodes 4 are internally provided with a signal receiving device, power supply and signal transmission are carried out through the cable 3, the electrode change-over switch controls the measuring electrodes 4 connected with the electrode change-over switch to be connected through the cable 3, the power supply and the signal disconnection of the measuring electrodes 4 can be controlled through operating a control button, the measuring electrodes 4 are inserted into different measuring points before measurement is started, the number of the measuring ground electrodes 4 can be increased or decreased according to the measurement requirement, during measurement, four measuring electrodes 4 are switched on through the electrode change-over switch, signals of other measuring electrodes 4 are disconnected, then the polar distance between the four measuring electrodes 4 used for measurement is recorded on the electrode change-over switch box 2, so that corresponding measuring data is obtained, when the polar distance needs to be changed, only different measuring electrodes 4 are switched through the electrode change-over switch, and then the corresponding polar distance is recorded on the electrode change-over switch box 2 again, the method can obtain new measurement data, is simple and convenient, has high efficiency, does not need to rearrange the position of the measurement electrode, and obviously improves the exploration capacity.

As shown in fig. 4 and 5, since a large number of measuring electrodes 4 are possible due to one-time measurement, and each measuring electrode 4 is in signal connection through a cable 3, which results in a large workload, a wire holder 41 is disposed on a metal cap of the measuring electrode 4, a conductive body connected to an internal wire of the electrode is disposed in the wire holder 41, a magnet ring is disposed on an inner wall of the wire holder 41, a terminal of the cable 3 is connected to a lug 5, the bottom of the lug 5 is provided with the lug 5 corresponding to the position of the conductive body, and the lug 5 has a shell made of ferromagnetic metal, and can be adsorbed into the wire holder 41, and is in contact with the conductive body through a conductive sheet 51 to realize electrical connection, so that connection can be realized quickly during wire connection, and also can be removed quickly during wire disconnection. In order to accurately correspond the conductive sheet 51 to the conductor position, a corresponding fool-proof structure 52 is provided inside the wire holder 41 and on the housing of the wire connector lug 5.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A multipole moment soil resistivity test apparatus comprising: soil resistivity measurement appearance (1), electrode change over switch case (2), cable (3) and measuring electrode (4), its characterized in that: soil resistivity measuring apparatu (1) connection electrode change over switch case (2), electrode change over switch case (2) inside is equipped with a plurality of electrode change over switches, and the outside is equipped with display area (21) and control area (22), control area (22) are equipped with control button, measuring electrode (4) are equipped with a plurality ofly, electrode change over switch passes through cable (3) and connects measuring electrode (4), set up signal receiver in measuring electrode (4), electrode change over switch is used for controlling the break-make of measuring electrode (4) power and the signal of being connected with it.

2. The multipole moment soil resistivity test device of claim 1, wherein: set up connection terminal (41) on the metal cap of measuring electrode (4), set up the electric conductor of being connected with electrode internal conductor in connection terminal (41) to set up the magnet ring at connection terminal (41) inner wall, the end of cable (3) is connected with lug (5), and lug (5) bottom sets up conducting strip (51) that corresponds with the electric conductor position, and lug (5) have ferromagnetism metal system shell.

3. The multipole moment soil resistivity test device of claim 2, wherein: and matched fool-proof structures (52) are arranged in the wire holder (41) and on the shell of the wire connecting piece (5).

4. The multipole moment soil resistivity test device of claim 1, wherein: the cable (3) adopts a multi-core shielding cable.

5. The multipole moment soil resistivity test device of claim 1, wherein: the display area (21) is a display screen.

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