CN203350363U - Soil sample indoor resistivity measuring device - Google Patents
Soil sample indoor resistivity measuring device Download PDFInfo
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- CN203350363U CN203350363U CN 201220447947 CN201220447947U CN203350363U CN 203350363 U CN203350363 U CN 203350363U CN 201220447947 CN201220447947 CN 201220447947 CN 201220447947 U CN201220447947 U CN 201220447947U CN 203350363 U CN203350363 U CN 203350363U
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- soil sample
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Abstract
The utility model relates to a soil sample indoor resistivity measuring device. The device is characterized in that the device comprises a soil sample placing device (2) and a direct current resistivity measuring apparatus (5); an emitting electrode plate and connector (3) is arranged on each side of the soil sample placing device (2); two receiving electrodes (4) are arranged in the middle part of the soil sample placing device (2); and one emitting electrode plate and connector (3) and one receiving electrode (4) are electrically connected with one corresponding function port of the direct current resistivity measuring apparatus (5), so a four-electrode method connection structure is formed. Therefore, the device is characterized by close connection among the electrodes and a soil sample and the resistivity measuring device and proper arrangement of detection points; a firm foundation is provided for precise measurement of indoor resistivity of the soil sample; and the device is suitable for indoor resistivity measurement of an ocean soil sample, a land soil sample or a manufacture soil sample.
Description
Technical field
The utility model relates to the utility model and relates to the indoor resistivity test device of a kind of soil sample, is applicable to the indoor resistivity measurement of ocean soil sample, land earth sample or making sample soil.Belong to soil analysis and equipment technical field.
Background technology
The design that the resistivity of pedotheque can be ground provides reference frame, especially, the resistivity of ocean soil can also provide necessary reference frame for parameters such as the engineering mechanics of determining ocean soil and corrosivity, thus soil especially the measurement of ocean soil resistivity is extremely important.
At present, not specially for the indoor resistivity test device of ocean soil, existing indoor resistivity surveying instrument, there are the following problems: install simple and crudely, measurement result is insincere; Measuring method is simple, and measuring result error is large; Do not consider for theoretical research the error that disturbance brings result, be not suitable for the measurement of Natural Samples.For example: Chinese patent ZL03222401.X has announced a kind of " low frequency soil resistivity tester ", by signal acquisition circuit, signal processing circuit, formed, be arranged on the geotechnological instruments such as triaxial apparatus or compressometer and adopt two utmost point method synchro measure resistivity, carry out the research of soil structure, this patent adopts two utmost point method measured resistivity measuring error large, the resistivity correction be must carry out and measuring error, the theoretical research that is more suitable for making by oneself sample reduced.
The utility model content
The purpose of this utility model, be to have for indoor soil sample measuring instrument prior art the defects such as resistivity measurement that measuring method is simple, be simply equipped, be not suitable for the field ocean soil, provides a kind of soil sample indoor resistivity test device.
The purpose of this utility model can reach by taking following measure:
The indoor resistivity test device of a kind of soil sample, its design feature is: comprise soil sample apparatus for placing and DC resistivity measurements instrument, respectively be provided with emitting electrode plate and a joint in the both sides of soil sample apparatus for placing, be provided with two receiving electrodes at the middle part of soil sample apparatus for placing; Described emitting electrode plate and joint and receiving electrode are electrically connected to the corresponding function port of DC resistivity measurements instrument, form the four-electrode method syndeton.
Further Technological improvement plan, the instrument that the DC resistivity measurements instrument is the field survey ground resistivity, institute's voltage supplied reaches even 180V of 90V, because seabed resistivity is relatively on the low side, for fear of the excessive instrument that burns of DC resistivity measurements instrument electric current, supply voltage value 3V～9V.
Further Technological improvement plan, emitting electrode plate and joint adopt the copper conducted electricity very well as the battery lead plate material, adopt chromium zirconium copper as the electrode contact material; Emitting electrode board diameter d
1can value 7cm, 8.9cm.10.8cm, thickness 2mm; Emitting electrode joint diameter 0.3cm, long 3cm.
Further Technological improvement plan, soil sample apparatus for placing left and right sides support is the insulating rigid plastic material, the distance of two stands is length adjustment per sample; The sample holder thin plate adopts hard PVC material, its thick 0.5cm, and its length is length adjustment per sample; Emitting electrode plate, joint and insulating support are fixed together; The dark hole of 3mm diameter 1cm is left respectively in the left and right sides, soil sample apparatus for placing chassis, for fixedly fixation with steel wire soil sample apparatus for placing is established.
Further Technological improvement plan, receiving electrode adopts copper as electrode material, is of a size of 1～2mm diameter, and 6cm is long; Be shaped as aciculiform, easily be pressed into soil sample and measured medium close contact; In electrode production process, adopt battery depolarizer to reduce the polarization effect of copper electrode; Convex hole is arranged 1cm place, distance electrode top so that fixed electorde is pressed into the degree of depth of soil sample.
The utlity model has following outstanding beneficial effect:
1, the utility model is owing to being provided with special sample apparatus for placing, and the both sides of placing in soil sample respectively are provided with emitting electrode plate and a joint, are provided with two receiving electrodes at the middle part of soil sample apparatus for placing; Described emitting electrode plate and joint are connected with the corresponding function port of DC resistivity measurements instrument with receiving electrode, form the four-electrode method syndeton, so its high-precision measuring method and special device make obtained test result more accurately and reliably.
2, the utility model is when the Measuring Oceanic earth sample, without releasing soil sample, only need take apart and remove Sample sleeve both sides block and get final product, and can keep to greatest extent the natural feature of soil sample, reduced measuring error.
The accompanying drawing explanation
The indoor ocean soil resistivity test device structural representation that Fig. 1 is a specific embodiment of the utility model.
The structure vertical view that Fig. 2 is rotary sample device in Fig. 1.
The structural front view that Fig. 3 is rotary sample device in Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail:
Specific embodiment 1:
With reference to Fig. 1, the indoor resistivity test device of the soil sample that the present embodiment relates to, comprise soil sample apparatus for placing 2 and DC resistivity measurements instrument 5, in the both sides of soil sample apparatus for placing 2, respectively be provided with an emitting electrode plate and joint 3, be provided with two receiving electrodes 4 at the middle part of soil sample apparatus for placing 2; Described emitting electrode plate and joint 3 and receiving electrode 4 are electrically connected to the corresponding function port of DC resistivity measurements instrument 5, form the four-electrode method syndeton.
1-ocean soil sample; 2-soil sample apparatus for placing; 3-emitting electrode plate and joint; The 4-receiving electrode; 5-DC resistivity measurements instrument; 6-is steel wire fixedly; The 7-bracket webs.
With reference to Fig. 2, Fig. 3, the specification of soil sample apparatus for placing 2 is: L1=15cm; L2=7cm, 9cm, 11cm; W1=7cm; W2=3cm; W3=2cm; W4=0.2cm; W5=0.8cm; H2=0.5+L2; H1=3cm.
In the present embodiment:
DC resistivity measurements instrument 5 adopts the earth DC resistivity measurements instrument that is applicable to field survey, and the nominal supply voltages of this measuring instrument is 90V or 180V.Because the resistivity of extra large earth sample is relatively on the low side, for fear of the excessive instrument that burns of DC resistivity measurements instrument 5 electric currents, the present embodiment adopts supply voltage value 3V～9V.
Emitting electrode plate and joint 3 adopt the copper conducted electricity very well as the battery lead plate material, adopt chromium zirconium copper as the electrode contact material; Emitting electrode board diameter d
1can value 7cm, 8.9cm.10.8cm, thickness 2mm; Emitting electrode joint 3 diameter 0.3cm, long 3cm.
Soil sample apparatus for placing 2 left and right sides supports are the insulating rigid plastic material, and the distance of two stands is length adjustment per sample; Sample holder thin plate 7 adopts hard PVC material, its thick 0.5cm, and its length is length adjustment per sample; Emitting electrode plate, joint and insulating support are fixed together; The dark hole of 3mm diameter 1cm is left respectively in soil sample apparatus for placing 2 left and right sides, chassis, for fixing steel wire 6 fixedly soil sample apparatus for placing 2 establish.
Receiving electrode 4 adopts copper as electrode material, is of a size of 1～2mm diameter, and 6cm is long; Be shaped as aciculiform, easily be pressed into soil sample and measured medium close contact; In electrode production process, adopt battery depolarizer to reduce the polarization effect of copper electrode; Convex hole is arranged 1cm place, distance electrode top so that fixed electorde is pressed into the degree of depth of soil sample.
The measurement mechanism that the present embodiment relates to is the device that carries out the indoor resistivity measurement of ocean soil, and the method for carrying out the indoor resistivity measurement of ocean soil is as follows:
The sampling cover is ambroin, when the ocean soil resistivity measurement, get the ocean bottom soil sample, at first remove sample two ends block, 2 liang of fixed support distances of length adjustment soil sample apparatus for placing per sample, place sample holder thin plate 7, afterwards fixedly the seabed soil sample on soil sample apparatus for placing 2, after battery lead plate to be launched and joint 3 and sample soil sample close contact, by fixing steel wire 6 two ends, be placed in fixedly two stands relative position of preformed hole; Length is determined receiving electrode pole span a (be generally sample thief length half) per sample, take the sample center to extend the a/2 long drilled holes in both sides to the left and right as initial point, then receiving electrode 4 is fixed in soil to electrode convex hole place; Connect receiving electrode, emitting electrode to DC resistivity measurements instrument 5, thus according to naked-eye observation to soil sample estimate that its electrical resistivity range determines supply voltage; Start is by DC resistivity measurements instrumentation flow setting parameter, and wherein electrode coefficient k value arranges by following expression (1):
k＝(πr^2)/a (1)
Wherein, r is the sample radius, and a is the receiving electrode pole span.
Setting completed starts to gather and recording voltage, electric current and resistivity value ρ for parameter
1, temperature T in the while recording room.
Measure and finish, exchange two receiving electrodes and again measure, and record this measuring voltage, electric current and resistivity value ρ
2.
Due to metal electrode in various degree have a polarization effect, therefore adopt the method for superposed average further to reduce polarization effect, the value of superposed average is by following expression (2)
ρ＝(ρ
1-ρ
2)/2 (2)
When indoor temperature during higher than 21 ℃, adopt and gained resistivity is carried out to temperature correction as expression formula (3),
ρ
15.5＝ρ
T((24.5-T)/40) (3)
Wherein, gained resistivity when ρ T is T ℃, indoor temperature when T is test, ℃.
The characteristics of this kind of embodiment are: the Sample sleeve of ocean soil sample 1 is insulating material, without releasing soil sample, only need take apart and remove Sample sleeve both sides block and get final product before sample measurement, has kept to greatest extent the natural feature of soil sample, has reduced measuring error.
The above; it is only the specific embodiment of the utility model the best; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the scope that the utility model discloses; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, all being belonged to protection domain of the present utility model.
Claims (5)
1. the indoor resistivity test device of soil sample, it is characterized in that: comprise soil sample apparatus for placing (2) and DC resistivity measurements instrument (5), respectively be provided with an emitting electrode plate and joint (3) in the both sides of soil sample apparatus for placing (2), at the middle part of soil sample apparatus for placing (2), be provided with two receiving electrodes (4); Described emitting electrode plate and joint (3) and receiving electrode (4) are electrically connected to the corresponding function port of DC resistivity measurements instrument (5), form the four-electrode method syndeton.
2. the indoor resistivity test device of a kind of soil sample as claimed in claim 1, it is characterized in that: DC resistivity measurements instrument (5) is the instrument of field survey ground resistivity, its supply voltage value 3V～9V.
3. the indoor resistivity test device of a kind of soil sample as claimed in claim 1 or 2 is characterized in that: emitting electrode plate and joint (3) adopt the copper conducted electricity very well as the battery lead plate material, adopt chromium zirconium copper as the electrode contact material; Emitting electrode board diameter d
1value 7cm, 8.9cm or 10.8cm, its thickness is 2mm; Emitting electrode joint diameter 0.3cm, long 3cm.
4. the indoor resistivity test device of a kind of soil sample as claimed in claim 1 or 2, it is characterized in that: soil sample apparatus for placing (2) left and right sides support is the insulating rigid plastic material, the distance of two stands is length adjustment per sample; Sample holder thin plate (7) adopts hard PVC material, its thick 0.5cm, and its length is length adjustment per sample; Emitting electrode plate, joint and insulating support are fixed together; The dark hole of 3mm diameter 1cm is left respectively in soil sample apparatus for placing (2) left and right sides, chassis, for fixing steel wire (6) fixedly soil sample apparatus for placing (2) establish.
5. the indoor resistivity test device of a kind of soil sample as claimed in claim 1 or 2 is characterized in that: receiving electrode (4) adopts copper as electrode material, is of a size of 1～2mm diameter, and 6cm is long; Be shaped as aciculiform, easily be pressed into soil sample and measured medium close contact; In electrode production process, adopt battery depolarizer to reduce the polarization effect of copper electrode; Convex hole is arranged 1cm place, distance electrode top so that fixed electorde is pressed into the degree of depth of soil sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447947 CN203350363U (en) | 2012-09-04 | 2012-09-04 | Soil sample indoor resistivity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220447947 CN203350363U (en) | 2012-09-04 | 2012-09-04 | Soil sample indoor resistivity measuring device |
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|---|---|
| CN203350363U true CN203350363U (en) | 2013-12-18 |
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| CN 201220447947 Expired - Fee Related CN203350363U (en) | 2012-09-04 | 2012-09-04 | Soil sample indoor resistivity measuring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908309A (en) * | 2017-01-25 | 2017-06-30 | 吉林炭素有限公司 | A kind of lossless detection method of graphite electrode and its joint rupture strength |
| CN107422188A (en) * | 2017-06-26 | 2017-12-01 | 南方电网科学研究院有限责任公司 | A kind of resistivity measurement system and method for direct current grounding pole armlet concrete |
| CN108548959A (en) * | 2018-02-09 | 2018-09-18 | 湖南省气象灾害防御技术中心（湖南省防雷中心） | A kind of soil resistivity measurement method and the method for analyzing soil fertility status |
-
2012
- 2012-09-04 CN CN 201220447947 patent/CN203350363U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908309A (en) * | 2017-01-25 | 2017-06-30 | 吉林炭素有限公司 | A kind of lossless detection method of graphite electrode and its joint rupture strength |
| CN106908309B (en) * | 2017-01-25 | 2020-01-10 | 吉林炭素有限公司 | Nondestructive testing method for flexural strength of graphite electrode and joint thereof |
| CN107422188A (en) * | 2017-06-26 | 2017-12-01 | 南方电网科学研究院有限责任公司 | A kind of resistivity measurement system and method for direct current grounding pole armlet concrete |
| CN107422188B (en) * | 2017-06-26 | 2023-11-17 | 南方电网科学研究院有限责任公司 | Resistivity measurement system and method for direct-current grounding electrode arm protection concrete |
| CN108548959A (en) * | 2018-02-09 | 2018-09-18 | 湖南省气象灾害防御技术中心（湖南省防雷中心） | A kind of soil resistivity measurement method and the method for analyzing soil fertility status |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC Free format text: FORMER NAME: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 510670 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee after: Company limited of China Energy Engineering Group Guangdong Electric Power Design Institute Address before: 510670 Luogang District, Guangdong, Guangzhou Science City Fung Road, No. 1, No. Patentee before: Guangdong Electric Power Design Institute of CEEC |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131218 Termination date: 20170904 |