CN208568652U - A kind of four-electrode method measurement soil resistivity analogue test platform - Google Patents
A kind of four-electrode method measurement soil resistivity analogue test platform Download PDFInfo
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- CN208568652U CN208568652U CN201820681042.XU CN201820681042U CN208568652U CN 208568652 U CN208568652 U CN 208568652U CN 201820681042 U CN201820681042 U CN 201820681042U CN 208568652 U CN208568652 U CN 208568652U
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Abstract
A kind of four-electrode method measurement soil resistivity analogue test platform, including column shape container, pressure applying mechanism, outside support, the first electric current pole, the second electric current pole, first voltage pole, second voltage pole, Temperature Humidity Sensor, pressure sensor；The lower part of the column shape container is equipped with the lower copper cover board being fixedly connected, and upper part is equipped with the upper copper cover board being flexibly connected, and the first electric current pole is arranged on lower copper cover board, and the second electric current pole is arranged on upper copper cover board；The first voltage pole is arranged in column shape container periphery and enters inside it close to the side of lower copper cover board and through column shape container；The second voltage pole is arranged in column shape container periphery and enters inside it close to the side of upper copper cover board and through column shape container.Advantage is that structure is simple and convenient to operate, is at low cost, can be used for multiple times.
Description
Technical field
The utility model belongs to direct current transportation field, specially a kind of consideration soil resistivity and temperature and humidity and pressure change
The four-electrode method of relationship measures soil resistivity analogue test platform.
Background technique
With the fast development of extra-high voltage direct-current transmission engineering, the receiving end earth electrode field selection of direct current system is increasingly tired
The case where difficulty, multiple HVDC System with One Common Earthing Electrode, is increasingly universal, and the earth current flowed through so as to cause earthing pole is also continuous
Increase, while also will affect the degree of earthing pole temperature rising.If earthing pole works in the excessively high environment of temperature, burn
The probability ruined will greatly increase.Earthing pole burning fault checks that discovery leading cable is burnt, around grounding body locally through excavating
Lower water boiling drains end soil differential hardening, and earth conductor rod iron heavy corrosion, electric current flows into end and tens meters of end is complete
Corrosion fracture.According to relevant far it is found that due to soil resistivity presence, electric current is by earthing pole to soil
In overflow dissipate when, cause soil to generate heat.But there are end effects for horizontal linear earthing pole, and electrode tip diffusing density is larger, promote
Significantly rise the portion soil moisture, soil water evaporation speed is accelerated, and soil resistivity increases, and is further exacerbated by office
The fever of portion's soil, so that the soil of ground connection pole surface is through heat setting, or even crust, eventually leading to earthing pole cannot normal work
Make.And the interaction in current field and temperature field exactly leads to the most important reason of earthing pole burning fault in the process.So
And soil water evaporation caused by temperature rise is not only changed soil resistivity, while also being produced to the thermal parameter of soil
Certain influence is given birth to, to further influence the temperature rise situation of earthing pole and neighbouring soil.
Utility model content
The utility model mainly solve at present multiple HVDC System with One Common Earthing Electrode the case where it is increasingly universal, so as to cause
The earth current that earthing pole is flowed through also constantly increases, while earthing pole fever is serious, due to the temperature of the soil near earthing pole
There are correlativities for degree, humidity, pressure and resistivity, and then since the change of the soil moisture, humidity causes soil resistivity to become
Change, be unfavorable for the diffusing of earthing pole, causes the vicious circle of earthing pole temperature rise.The utility model is to research temperature, humidity and soil
The relationship of earth resistivity provides convenience, simple thinking, and the utility model can carry out real-time monitoring to the temperature and humidity of soil,
Ensure during measurement, the temperature and humidity of soil does not have a greater change, and reduces the error of test, changes soil pressure, can
To simulate soil regime under natural conditions as far as possible, while four-electrode method eliminates the influence of contact resistance between electrode and soil,
Reduce test error, the influence that four-electrode method eliminates contact resistance between electrode and soil can also be studied.
The utility model is achieved through the following technical solutions:
A kind of four-electrode method measurement soil resistivity analogue test platform, including column shape container, pressure applying mechanism, external branch
Frame, the first electric current pole, the second electric current pole, first voltage pole, second voltage pole, Temperature Humidity Sensor, pressure sensor；Described
The lower part of column shape container is equipped with the lower copper cover board that is fixedly connected, and upper part is equipped with the upper copper cover board being flexibly connected, and described first
Electric current pole is arranged on lower copper cover board, and the second electric current pole is arranged on upper copper cover board；The first voltage pole is arranged in column
Container periphery close to lower copper cover board side and through column shape container enter its inside；The second voltage pole is arranged in column
Container periphery close to upper copper cover board side and through column shape container enter its inside；The Temperature Humidity Sensor, pressure pass
Sensor is arranged in inside column shape container for detecting internal temperature, humidity and pressure；The pressure applying mechanism is mounted on
Outside support is simultaneously kept out on upper copper cover board, is used to apply pressure to upper copper cover board to promote tote inside column shape container
Pressure.
It as an improvement of the above scheme, further include insulation spacer, the insulation spacer is arranged in upper copper cover board and column
Between container.
As an improvement of the above scheme, the pressure applying mechanism includes compression bar and the rotation handle that is arranged on compression bar
Hand, the compression bar, which is connected through a screw thread, to be mounted on outside support, is adjusted by rotating handles turn compression bar to upper copper cover board
Pressure.
As an improvement of the above scheme, the pressure applying mechanism is equipped with two sets.
The utility model has the following beneficial effects:
Structure is simple and convenient to operate, is at low cost, can be used for multiple times；Real-time monitoring can be carried out to the temperature and humidity of soil,
Ensure during measurement, the temperature and humidity of soil does not have a greater change, and reduces the error of test；Four-electrode method elimination is sufficiently used
The influence of contact resistance between electrode and soil, to reduce the advantage of test error；The favorable sealing property of whole device,
It may insure during the test, the water content of soil is without large change.
Detailed description of the invention
Fig. 1 is the cross-sectional view of the simulation experiment platform of the utility model.
Description of symbols: column shape container 1, pressure applying mechanism 2, outside support 3, the first electric current pole 4, the second electric current pole
5, first voltage pole 6, second voltage pole 7, Temperature Humidity Sensor 8, pressure sensor 9, insulation spacer 10, lower copper cover board 11, on
Copper cover board 12, compression bar 13, rotating handles 14.
Specific embodiment
Embodiment
As shown in Figure 1, a kind of four-electrode method measures soil resistivity analogue test platform, including column shape container 1, pressure apply
Mechanism 2, outside support 3, the first electric current pole 4, the second electric current pole 5, first voltage pole 6, second voltage pole 7, Temperature Humidity Sensor
8, pressure sensor 9, insulation spacer 10；The lower part of the column shape container 1 is equipped with the lower copper cover board 11 being fixedly connected, thereon
Portion is equipped with the upper copper cover board 12 being flexibly connected, and the first electric current pole 4 is arranged on lower copper cover board 11, and the second electric current pole 5 is set
It sets on upper copper cover board 12；The first voltage pole 6 is arranged in 1 periphery of column shape container close to the side of lower copper cover board 11 and passes through
Column shape container 1 is worn to enter inside it；1 periphery of column shape container is arranged in close to the one of upper copper cover board 12 in the second voltage pole 7
Side simultaneously enters inside it through column shape container 1；The Temperature Humidity Sensor 8, pressure sensor 9 are arranged in column shape container 1
Portion is used to detect internal temperature, humidity and pressure；The pressure applying mechanism 2 is mounted on outside support 3 and keeps out upper
On copper cover board 12, it is used to apply pressure to upper copper cover board 12 to promote 1 inside tote pressure of column shape container.Described is exhausted
Edge gasket 10 is arranged between upper copper cover board 12 and column shape container 1.The pressure applying mechanism 2 includes that compression bar and setting exist
Rotating handles 14 on compression bar 13, the compression bar 13, which is connected through a screw thread, to be mounted on outside support 3, passes through rotating handles 14
Turn compression bar 13 adjusts the pressure to upper copper cover board 12.The pressure applying mechanism 2 is equipped with two sets.
Operation instruction: being put into column shape container 1 for the soil to be measured first, and by the first electric current pole 4 and second
Electric current pole 5, first voltage pole 6 and second voltage pole 7, Temperature Humidity Sensor 8 and pressure sensor 9 are mounted on column shape container 1
On, 8 route of Temperature Humidity Sensor and pressure sensor 9 are routed through the centre bore of copper cover board 12, are subsequently placed in insulating box
Heated, to make soil to be measured be in a certain temperature, after heating half an hour, device is taken out.By being embedded in
Temperature Humidity Sensor 8, pressure sensor 9 in soil record temperature, water content and the initial pressure of soil, by DC power supply
Output cathode is connected on the second electric current pole 5 being connected with upper copper cover board 12, and the output negative pole of DC power supply is connected to under
On the first connected electric current pole 4 of copper cover board 11, a voltmeter in parallel, voltage between first voltage pole 6 and second voltage pole 7
The anode of table is connected on the second voltage pole 7 of upper copper cover board 12, and the cathode of voltmeter is connected to close to lower copper cover board 11
First voltage pole 6 on, be powered by DC power supply, recording voltmeter voltage data and DC power supply current data pass through
Rotating handles 14 make compression bar 13 do downward movement, and impacting soil makes its pressure change, and adjusts DC power supply
Current values can measure multi-group data, can be averaged to obtain the electric resistance of soil under the temperature, humidity, pressure later
Rate, the soil resistivity under available different temperatures, humidity, pressure by the same method, to obtain soil resistivity
With temperature and humidity and pressure change relationship.
Above-listed detailed description is illustrating for the utility model possible embodiments, and the embodiment is not to limit
The scope of the patents of the utility model, all equivalence enforcements or change without departing from carried out by the utility model, is intended to be limited solely by this case
In the scope of the patents.
Claims (4)
1. a kind of four-electrode method measures soil resistivity analogue test platform, which is characterized in that apply machine including column shape container, pressure
Structure, outside support, the first electric current pole, the second electric current pole, first voltage pole, second voltage pole, Temperature Humidity Sensor, pressure sensing
Device；The lower part of the column shape container is equipped with the lower copper cover board being fixedly connected, and upper part is equipped with the upper copper cover board being flexibly connected, institute
The the first electric current pole stated is arranged on lower copper cover board, and the second electric current pole is arranged on upper copper cover board；The first voltage pole is set
It sets in column shape container periphery close to the side of lower copper cover board and enters inside it through column shape container；The second voltage pole is set
It sets in column shape container periphery close to the side of upper copper cover board and enters inside it through column shape container；The temperature and humidity sensing
Device, pressure sensor are arranged in inside column shape container for detecting internal temperature, humidity and pressure；The pressure applies machine
Structure is mounted on outside support and keeps out on upper copper cover board, is used to apply pressure to upper copper cover board to be promoted in column shape container
Portion's tote pressure.
2. a kind of four-electrode method according to claim 1 measures soil resistivity analogue test platform, which is characterized in that also wrap
Insulation spacer is included, the insulation spacer is arranged between upper copper cover board and column shape container.
3. a kind of four-electrode method according to claim 1 measures soil resistivity analogue test platform, which is characterized in that described
Pressure applying mechanism include compression bar and the rotating handles that are arranged on compression bar, the compression bar be connected through a screw thread is mounted on it is outer
On portion's bracket, the pressure to upper copper cover board is adjusted by rotating handles turn compression bar.
4. a kind of four-electrode method according to claim 3 measures soil resistivity analogue test platform, which is characterized in that described
Pressure applying mechanism be equipped with two sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820681042.XU CN208568652U (en) | 2018-05-07 | 2018-05-07 | A kind of four-electrode method measurement soil resistivity analogue test platform |
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| CN201820681042.XU CN208568652U (en) | 2018-05-07 | 2018-05-07 | A kind of four-electrode method measurement soil resistivity analogue test platform |
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| CN208568652U true CN208568652U (en) | 2019-03-01 |
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| CN201820681042.XU Active CN208568652U (en) | 2018-05-07 | 2018-05-07 | A kind of four-electrode method measurement soil resistivity analogue test platform |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542797A (en) * | 2019-10-11 | 2019-12-06 | 河南四达电力设备股份有限公司 | method for testing contact performance difference between different grounding materials and soil |
| CN113655095A (en) * | 2021-08-27 | 2021-11-16 | 国网湖北省电力有限公司鄂州供电公司 | Conductive composite medium particle resistivity detection device and detection method |
-
2018
- 2018-05-07 CN CN201820681042.XU patent/CN208568652U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542797A (en) * | 2019-10-11 | 2019-12-06 | 河南四达电力设备股份有限公司 | method for testing contact performance difference between different grounding materials and soil |
| CN113655095A (en) * | 2021-08-27 | 2021-11-16 | 国网湖北省电力有限公司鄂州供电公司 | Conductive composite medium particle resistivity detection device and detection method |
| CN113655095B (en) * | 2021-08-27 | 2023-12-08 | 国网湖北省电力有限公司鄂州供电公司 | Device and method for detecting resistivity of conductive composite medium particles |
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