CN201096707Y - Soil erosion simulation acceleration testing box - Google Patents

Soil erosion simulation acceleration testing box Download PDF

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Publication number
CN201096707Y
CN201096707Y CNU2007201739482U CN200720173948U CN201096707Y CN 201096707 Y CN201096707 Y CN 201096707Y CN U2007201739482 U CNU2007201739482 U CN U2007201739482U CN 200720173948 U CN200720173948 U CN 200720173948U CN 201096707 Y CN201096707 Y CN 201096707Y
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CN
China
Prior art keywords
test
box
water trap
water
soil
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Expired - Fee Related
Application number
CNU2007201739482U
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Chinese (zh)
Inventor
李晓刚
聂向晖
杜翠薇
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Beijing University of Technology
University of Science and Technology Beijing USTB
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University of Science and Technology Beijing USTB
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Priority to CNU2007201739482U priority Critical patent/CN201096707Y/en
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Publication of CN201096707Y publication Critical patent/CN201096707Y/en
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Abstract

The utility model relates to a soil corrosion simulation acceleration test box, belonging to a technical field of corrosion, which is composed of a test box body, a water box and an electrical control box, wherein the water box 12 and the electrical control box 12 are arranged on the bracket above the test box body 2, a heating plate 1 is connected on the power supply by control circuit, and also arranged on the bracket of inner bottom part of the test box body 2, 1-5 test vessels can be suspended on the hook at top part of the test box body 2, wherein one test vessel is suspended below a weight sensor 15 by a hook 16. The utility model has the advantages that: the test box can be used in laboratory to simulate actual case of soil corrosion on the spot, test temperature and soil moisture content are adjusted to reach the purpose of accelerating corrosion, thereby contrasting soil anti-corrosion capability of different materials and also contrasting corrosion strength of different soils.

Description

Soil corrosion simulated acceleration test case
Technical field
The utility model belongs to the corrosion technology field, particularly a kind of soil corrosion simulated acceleration test case.
Background technology
The soil corrosion accelerated test is a kind of main means of carrying out soil corrosion research at short notice, yet up to the present the soil corrosion accelerated test does not also have relevant national standard, the soil corrosion accelerated test method of carrying out at present mainly contains strengthens medium method, galvanic couple accelerated process (Meng Sha orchid, the Guo Zhi arc. copper one steel galvanic couple quickens research---the partial results of grand celebration soil testing that steel corrodes in soil, corrosion science and guard technology, 1995,7 (4): 358-361; The Meng Sha orchid, Jin Minghui, Sun Jiarui etc. the galvanic couple method is quickened the research of soil corrosion, corrosion and protection, 1995 in the grand celebration soil, 16 (6): 262-264), electrolytic weight loss method (Gao Ying, Zhang Shuquan, silver credit moral etc. the indoor accelerated tests research of Liaoning Area soil corrosion, corrosion science and guard technology, 1992,4 (3): 204-208), be interrupted polarization method etc.This several method is the soil corrosion test method that can obtain big speed-up ratio at short notice, but except that strengthening medium method, they all come accelerated corrosion by impressed current, have certain mandatory, etching condition and pattern and actual conditions differ greatly, the effect of macro cell has mainly been considered in test, has ignored the effect of corrosion micro cell, thereby can only do sxemiquantitative research.
The soil corrosion simulated acceleration test is to realize the purpose of accelerated corrosion by regulating the soil moisture content and the soil moisture, mainly be to utilize equipment such as water-bath or baking oven to come soil and sample are heated in the testing laboratory at present, the shortcoming of this method is the manual measurement that need carry out the soil moisture and water cut termly, variation adds water according to soil weight termly, and the control accuracy of temperature and water cut is poor.
Summary of the invention
The purpose of this utility model is to provide a kind of soil corrosion simulated acceleration test case, utilize this chamber, not changing the mechanism of material soil corrosion, mainly is by change temperature and water cut, thereby the kinetic parameter in the change soil corrosion process is realized the purpose of accelerated corrosion.In soil corrosion simulated acceleration test case, utilize actual soil, do not introduce other ions, adopt water cut, the temperature variation of control soil, suitable bubbling air, realize the permanent water cut of constant temperature, cold and heat succeed each other and three kinds of corrosion of alternation of wetting and drying accelerated method, simulated the variation of temperature, water cut in the Various Seasonal soil under the natural environmental condition, also comprised the effect of the air rate of propagation quickening that dry and cracked back of soil or strong convective weather cause simultaneously.
The utility model soil corrosion simulated acceleration test case mainly is made of test box body, water tank, electric control box, test chamber and heating plate, wherein electric control box and water tank are installed in the top of test box body, the sidewall of test box body reaches and goes up bottom surface is double-decker, fill insulant material between outer wall within it, thus reach the purpose of insulation.Heating plate is connected on the external power by control circuit, be positioned on the support of test box body inner bottom part, come soil in the test chamber and sample are heated by the air in the heat test box body, avoided directly heating and in soil, form bigger thermograde of heating plate.Two temperature sensors that are connected on the temperature control instrument are arranged in the test box body, can carry out corresponding temperature survey, one of them is fixed in the top of test box body by nut, be used for the air themperature in the experiment with measuring box body, in another soil in sample is embedded in test chamber, be used for the temperature in the measured soil.The upper end of weight sensor is connected the bottom surface of the water tank above the test box body by connecting rod, and the hook of its lower end is stretched in the test box body by the aperture on the test box body.Top in test box body also is equipped with 4 hooks, therefore in test box body, 4 hooks that comprise that the test box body top installs and a hook under the weight sensor, 5 hooks are arranged altogether, test chamber hangs in the test box body by hook, in test box body, can hang 1~5 test chamber simultaneously, keep identical soil weight and water cut in each test chamber, can carry out 5 groups of parallel experiments at most.The sidewall of test box body is equipped with exhaust fan, the duty of exhaust fan is controlled by temperature controller in the electric control box and timer, to regulate the air themperature in the test box body, come the influence that the air rate of propagation is accelerated in the simulating natural environment by the timing air draft simultaneously.
The bottom of water tank is equipped with the tank drains pipe, connect solenoid valve and water trap under the tank drains pipe successively, solenoid valve links to each other with control circuit by lead, come the closure and the unlatching of control electromagnetic valve according to the variation of weight sensor reading, current are by tank drains pipe, solenoid valve, water trap water inlet pipe and water trap, in water trap drainpipe mean allocation each test chamber in the test box body.In water trap, adopt the method for Overflow drainage, in order to guarantee the mean allocation of current, require interior each water trap drainpipe opening of water trap on same surface level, and has an identical internal diameter, the flow of water trap water inlet pipe is greater than the flow sum of each water trap drainpipe, to guarantee the liquid level in the water trap, the water trap water inlet pipe extends under the opening of water trap drainpipe simultaneously, directly is injected in the water trap drainpipe to prevent water stream.
In electric control box, gather the parameter of two temperature sensors and a weight sensor, adopt PID control, single-chip microcomputer or micro-processor controlled mode to control the duty of heating plate, exhaust fan and solenoid valve, to reach the working condition in the test chamber in the warranty test box body.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Fig. 1 is a soil corrosion simulated acceleration test box structure synoptic diagram.Wherein, heating plate 1, test box body 2, test chamber 3, exhaust fan 4, hook 5, water trap drainpipe 6, measured hole 7, water trap 8, water trap water inlet pipe 9, solenoid valve 10, tank drains pipe 11, water tank 12, electric control box 13, connecting rod 14, weight sensor 15, hook 16, temperature sensor 17, temperature sensor 18, sample 19.
Fig. 2 is the structural representation of water trap.Wherein, water trap base plate 20, mounting hole 21, water trap cylindrical shell 22, top cover 23.
Embodiment
Soil corrosion simulated acceleration test case shown in Figure 1 mainly is made up of test box body 2, water tank 12 and electric control box 13, and water tank 12 and electric control box 13 are fixed in the top of test box body 2 by support.The sidewall of test box body 2 and to go up bottom surface be double-decker, fill insulant material between outer wall within it, thus reach the purpose of insulation.Heating plate 1 is connected on the external power by control circuit, is positioned on the support of test box body inner bottom part, comes soil in the test chamber 3 and sample 19 heating by the air in the heat test box body 2.Temperature sensor 17 is fixed on top in the test box body 2 by nut, is wired in the electric control box 13, is used for the air themperature in the experiment with measuring box body 2; In the soil of temperature sensor 18 in sample 19 is embedded in test chamber 3, with the temperature in the measured soil.Weight sensor 15 is connected the bottom of water tank 12 by the connecting rod 14 of its upper end, the hook 16 of its lower end reaches test box body 2 inside by the hole above the test box body 2,4 hooks 5 are installed at top in test box body 2, test chamber 3 can hang on these hooks, and one of them test chamber 3 hangs on the hook 16 below the weight sensor 15.In the bottom of water tank 12 tank drains pipe 11 is installed, connects solenoid valve 10, water trap water inlet pipe 9 and water trap 8 successively below the tank drains pipe 11, water trap drainpipe 6 is installed in the bottom of water trap 8, and its lower end connects flexible pipe and extend in the sample receiver 3.Water in the water tank can pass through tank drains pipe 11, solenoid valve 10, water trap 8, water trap drainpipe 6 flow in each test chamber 3 in the test box body 2, and wherein the closure of solenoid valve 10 is controlled by the reading of the weight sensor 15 that collects in the electric control box 13 with opening.Exhaust fan 4 is fixed on by screw on the sidewall of test box body 2, and its duty is controlled by temperature controller and timer in the electric control box 13, to regulate the air themperature in the test box body 2, can also carry out the timing air draft simultaneously.Have electrochemical measurement hole 7 at the top of test box body 2, be used by the corresponding electrochemical measurement equipment of this Kong Keyu, with the galvanochemistry index of soil and sample in the experiment with measuring container.
Water trap shown in Figure 2 mainly is made up of water trap cylindrical shell 22 and top cover 23, and top cover 23 is connected by thread seal with 22 of water trap cylindrical shells, and detachably to check the congestion situations of water trap water inlet pipe 9 and water trap drainpipe 6.Water trap water inlet pipe 9 can be installed on the top cover 23 by welding or the method that is threaded, 5 water trap drainpipes 6 are installed on the water trap base plate 20, changeing on water trap base plate 20 has mounting hole 21, so that water trap 8 is installed in the top of test box body 2.For the water discharge that guarantees each water trap drainpipe 6 is identical, not only to want the aperture of each water trap drainpipe 6 to equate, and require in water trap cylindrical shell 22, the water inlet of each water trap drainpipe 6 (upper surface) is on same surface level.Water trap water inlet pipe 9 will extend to 0.5~5cm place under the water inlet of water trap drainpipe 6 in water trap cylindrical shell 22, to avoid water directly to be injected into the water trap drainpipe 6 from water trap water inlet pipe 9, in order to guarantee the liquid level in the water trap cylindrical shell 22, require the flow of water trap water inlet pipe 9 to be greater than the flow sum of each water trap drainpipe 6.
Certainly, this water trap can also adopt other structure, as from the water inlet of the bottom of water trap, and when being higher than water trap drainpipe position, between water trap water inlet pipe and water trap drainpipe, adding baffle plate and directly be injected in the water trap drainpipe to avoid current in water trap water inlet pipe position.Such conversion all drops within the protection domain of the present utility model.

Claims (5)

1. soil corrosion simulated acceleration test case, form by test box body, water tank and electric control box, it is characterized in that: water tank (12) and electric control box (13) are installed on the top support of test box body (2), heating plate (1) is connected on the external power by control circuit, and it is installed on the support of test box body (2) inner bottom part; Can hang 1~5 test chamber on the hook at test box body (2) top, one of them test chamber hangs under the weight sensor (15) by hook (16); In sample box body (2), be connected temperature sensor (17) on the control instrument is fixed on sample box body (2) by nut top; Temperature sensor (18) is embedded in the interior soil of test chamber; The top of weight sensor (15) is connected the bottom of water tank (12) by connecting rod (14), and the hook of its lower end (16) extend into test box body (2) inside; Exhaust fan (4) is installed in the sidewall of chamber.
2. according to the described soil corrosion simulated acceleration test of claim 1 case, it is characterized in that: the sidewall of test box body (2) reaches and goes up bottom surface is double-decker, within it fill insulant material between outer wall.
3. according to the described soil corrosion simulated acceleration test of claim 1 case, it is characterized in that: following tank drains pipe (11), solenoid valve (10), water trap water inlet pipe (9) and the water trap (8) of connecting successively of water tank (12); The water trap drainpipe is installed on the water trap base plate (20), and its lower end connects flexible pipe and extend in the sample receiver.
4. according to the described soil corrosion simulated acceleration test of claim 3 case, it is characterized in that: each water trap drainpipe opening is on same surface level in the water trap, and having identical internal diameter, the internal diameter size of each water trap drainpipe on the water trap base plate (20) equates.
5. according to the described soil corrosion simulated acceleration test of claim 3 case, it is characterized in that: in water trap simplified (22), the open height of water trap water inlet pipe (9) is lower than the open height 0.5~5cm of water trap drainpipe (6).
CNU2007201739482U 2007-11-01 2007-11-01 Soil erosion simulation acceleration testing box Expired - Fee Related CN201096707Y (en)

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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103257105A (en) * 2013-05-31 2013-08-21 江西省电力科学研究院 Soil corrosivity accelerated test method and device
CN103398919A (en) * 2013-08-13 2013-11-20 太原理工大学 Device and method for indoor accelerated test of corrosion of polluted soil
CN103869049A (en) * 2014-02-25 2014-06-18 广东省农业科学院农业资源与环境研究所 Simulation experiment device for simulating cold bottom field soil environment and application thereof
CN104165748A (en) * 2014-07-10 2014-11-26 河海大学 Soil wind-erosion testing system and evaluation method thereof
CN104630786A (en) * 2015-02-02 2015-05-20 中国石油天然气股份有限公司 Simulator for soil corrosion of pipeline under cathodic protection
CN104914000A (en) * 2015-06-15 2015-09-16 三峡大学 Automatic real-time weighing system with function of controlling temperature and humidity
CN105738274A (en) * 2016-03-22 2016-07-06 全球能源互联网研究院 Detecting method for simulating accelerated soil-environment corrosion of metal materials
CN106370821A (en) * 2016-11-15 2017-02-01 安徽理工大学 Coal mining area reconstructed soil water-air-thermal coupling migration indoor simulation test system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103257105A (en) * 2013-05-31 2013-08-21 江西省电力科学研究院 Soil corrosivity accelerated test method and device
CN103257105B (en) * 2013-05-31 2016-08-10 江西省电力科学研究院 A kind of soil corrosivity acceleration test apparatus
CN103398919A (en) * 2013-08-13 2013-11-20 太原理工大学 Device and method for indoor accelerated test of corrosion of polluted soil
CN103869049B (en) * 2014-02-25 2015-10-21 广东省农业科学院农业资源与环境研究所 For analogue experiment installation and the application thereof of field soil environment of the cold end
CN103869049A (en) * 2014-02-25 2014-06-18 广东省农业科学院农业资源与环境研究所 Simulation experiment device for simulating cold bottom field soil environment and application thereof
CN104165748A (en) * 2014-07-10 2014-11-26 河海大学 Soil wind-erosion testing system and evaluation method thereof
CN104630786A (en) * 2015-02-02 2015-05-20 中国石油天然气股份有限公司 Simulator for soil corrosion of pipeline under cathodic protection
CN104914000A (en) * 2015-06-15 2015-09-16 三峡大学 Automatic real-time weighing system with function of controlling temperature and humidity
CN105738274A (en) * 2016-03-22 2016-07-06 全球能源互联网研究院 Detecting method for simulating accelerated soil-environment corrosion of metal materials
CN106370821A (en) * 2016-11-15 2017-02-01 安徽理工大学 Coal mining area reconstructed soil water-air-thermal coupling migration indoor simulation test system

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C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20080806

Termination date: 20111101