CN101934157A - Device and method for extracting water content of soil sample - Google Patents
Device and method for extracting water content of soil sample Download PDFInfo
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- CN101934157A CN101934157A CN 201010158497 CN201010158497A CN101934157A CN 101934157 A CN101934157 A CN 101934157A CN 201010158497 CN201010158497 CN 201010158497 CN 201010158497 A CN201010158497 A CN 201010158497A CN 101934157 A CN101934157 A CN 101934157A
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Abstract
The invention discloses a device for extracting the water content of a soil sample, consisting of a water bath heating device, a flask, an air pressure gauge, an air intake tube, an air outtake tube, a frosted glass plug, a test tube, a container holding liquid nitrogen and a vacuum pump. The device is characterized in that the lower part of the flask which holds the soil is provided with the water bath heating device; a glass tube is inserted into a flask mouth; the other end of the glass tube is connected with the air intake tube through the air pressure gauge; the other end of the air intake tube passes through the frosted glass plug of the test tube, and is inserted into the test tube; one end of the air outtake tube passes through the frosted glass plug of the test tube and is inserted into the other end of the test tube to be connected with the vacuum pump; the test tube is placed into the container which holds the liquid nitrogen; a tube mouth of the air intake tube in the test tube is higher than a tube mouth of the air outtake tube; and the water bath heating device, the flask, the container holding liquid nitrogen and the test tube are fixed through a support. The soil sample is placed into the flask when the device works to extract the air in the device, and is heated by using the water bath heating device, and vapor is condensed by using a condensation device continuously working for 5-7 hours so that the water in the soil sample is completely extracted.
Description
One, technical field
The present invention relates to a kind of in hydrology or agrology scientific experiment the apparatus and method of required extraction soil moisture, be mainly used in hydrology or the research of agrology basic law.
Two, background technology
In the experiment of hydrology basic law, water following oozes the hydrological science rule that mechanism and other basins product conflux in the method research soil of isotope hydrology commonly used.This need extract the moisture in the soil, has both obtained the information of soil moisture content, can record the hydrogen-oxygen isotopic content of moisture again by instrument, and then analysis and research are oozed down and the basic law of confluxing is produced in other basins.In River Basin Hydrology simulation because hydrology rule is unknown, hydrological model utilize information very limited, but be need more Useful Informations in the actual simulation, could simulate better, forecast more accurate.But it is very difficult extracting all moisture of soil, azeotropic method and centrifugal separation commonly used at present.What azeotropic method adopted is benzene, and this material is poisonous, and danger is bigger, and it is also inconvenient to operate; Inapplicable when centrifugal separation is hanged down the pedotheque water content, the precision that the centrifugal separation extraction soil water carries out isotope analysis is lower.
Three, summary of the invention
The principle that the present invention utilizes vacuum distillation to separate soil moisture proposes a kind of apparatus and method of extracting soil sample moisture, can overcome the shortcoming of above method for fetching water, and apparatus structure is reasonable, easy operating, and method is simple and practical, and feasibility is strong.
Technical scheme of the present invention: a kind of device that extracts soil sample moisture, container and vavuum pump by water-bath heater, flask, barometer, air inlet pipe, escape pipe, ground glass stopper, test tube, Sheng liquid nitrogen are formed, it is characterized in that: the flask bottom of containing soil is provided with the water-bath heater, bottleneck inserts glass tube, the glass tube other end connects air inlet pipe by barometer, the air inlet pipe other end passes the ground glass stopper of test tube, insert test tube, the ground glass stopper that escape pipe one end passes test tube inserts the test tube other end, connects vavuum pump.Test tube places the container of containing liquid nitrogen, and the mouth of pipe of the air inlet pipe in the test tube is higher than the mouth of pipe of escape pipe, and the diameter range of test tube is 3-4cm, and air inlet pipe is identical with the diameter of escape pipe, with the diameter proportion of test tube be 1: 4.Each junction uses the vacuum ester to seal, and the container and the test tube of water-bath heater, flask, Sheng liquid nitrogen are fixed by support.
During work, a certain amount of soil sample is put into flask, utilize vavuum pump to take air in the device away earlier, make and be in vacuum in the device, adopt water-bath heating then, keep 100 degrees centigrade of temperature constant, continuous supplementing water in the water-bath heater in the heating process, keep flask to immerse in the water all the time, and observe barometrical numerical value, when atmospheric pressure value raises, in the container of containing liquid nitrogen, replenish liquid nitrogen, water in the soil sample is constantly vaporized and is entered test tube like this, and constantly is condensed into ice in test tube.Working like this continues 5-7 hour, and powered-down stops heating then, and test tube is taken out, and melts the ice in the test tube, can obtain the moisture in the soil sample.
The present invention's advantage compared to existing technology:
1. it is rational in infrastructure to utilize vacuum distillation to extract soil moisture, easy operating; 2. this device safe and feasible, asepsis environment-protecting; 3. the soil water of this device extraction is pure water, does not contain other chemical substance, can reduce the influence that other materials are analyzed the soil water; 4. comparatively fast extract the moisture in the soil sample, measure soil moisture content indirectly.
Four, description of drawings
Accompanying drawing is a structural representation of the present invention
Among the figure:
1. water-bath heater
2. flask
3. barometer
4. air inlet pipe
5. escape pipe
6. ground glass stopper
7. test tube
8. contain the container of liquid nitrogen
9. vavuum pump
Five, the specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described:
The bottle end of containing the flask (2) of a certain amount of soil sample, immersed in the water of water-bath heater (1), bottleneck inserts glass tube, the glass tube other end connects air inlet pipe (4) by barometer (3), air inlet pipe (4) other end passes the ground glass stopper (6) of test tube (7), insert test tube (7), the ground glass stopper (6) that escape pipe (5) one ends pass test tube (7) inserts test tube (7) other end, connects vavuum pump (9).Test tube (7) places the container (8) of containing liquid nitrogen, the mouth of pipe of the air inlet pipe (4) in the test tube (7) is higher than the mouth of pipe of escape pipe (5), the diameter range of test tube (7) is 3-4cm, and air inlet pipe (4) is identical with the diameter of escape pipe (5), with the diameter proportion of test tube (7) be 1: 4.Each junction uses the vacuum ester to seal, and the container (8) and the test tube (7) of water-bath heater (1), flask (2), Sheng liquid nitrogen are fixed by support.
The mouth of pipe of air inlet pipe (4) is higher than the mouth of pipe of escape pipe (5), test tube (7) diameter range is 3-4cm, air inlet pipe (4) is identical with escape pipe (5) diameter, with test tube (7) diameter proportion be 1: 4, steam flows in test tube (7) from top to bottom, increased the effective contact area that is in the tube wall of the test tube (7) under the liquid nitrogen environment with the outside, condensation is more abundant, better effects if.
The air pressure of barometer (3) in can display unit, when atmospheric pressure value raise, illustrating had steam to produce in the device, at this moment needed interpolation liquid nitrogen condensed steam in the container (8) of containing liquid nitrogen.The numerical value that can pass through barometer (3) like this adds liquid nitrogen, makes experiment more convenient, operates simpler.Liquid nitrogen in the container (8) of Sheng liquid nitrogen is constantly volatilization at normal temperatures, can absorb a large amount of heats, like this can condensed steam.
Job step of the present invention is as follows:
1, dress soil sample
Take by weighing a certain amount of pedotheque earlier, put into flask (2) after, coat the vacuum ester at bottleneck and bottle stopper then, rotation makes contact position sealing.
2, vacuumize
Open the power supply of vavuum pump (9), the air in the picking device makes whole device be in vacuum state.
3, vacuum distillation
Employing water-bath heating, 100 degrees centigrade of temperature constant, the continuous supplementing water of heating process is in water-bath heater (1), keep flask (2) to immerse in the water all the time, and observe the numerical value that barometer (3) shows, when atmospheric pressure value raises, in the container (8) of containing liquid nitrogen, replenish liquid nitrogen.
4, water sampling
Close vavuum pump (9) power supply, close water-bath heater (1) power supply, withdraw from the container (8) of containing liquid nitrogen.Test tube (7) is taken out, melt ice wherein, can obtain moisture whole in the soil sample.
Claims (2)
1. device that extracts soil sample moisture, by the water-bath heater, flask, barometer, air inlet pipe, escape pipe, ground glass stopper, test tube, containing the container and the vavuum pump of liquid nitrogen forms, it is characterized in that: the flask bottom of containing soil is provided with the water-bath heater, bottleneck inserts glass tube, the glass tube other end connects air inlet pipe by barometer, the air inlet pipe other end passes the ground glass stopper of test tube, insert test tube, the ground glass stopper that escape pipe one end passes test tube inserts the test tube other end, connect vavuum pump, test tube places the container of containing liquid nitrogen, the mouth of pipe of the air inlet pipe in the test tube is higher than the mouth of pipe of escape pipe, the diameter range of test tube is 3-4cm, air inlet pipe is identical with the diameter of escape pipe, with the diameter proportion of test tube be 1: 4, each junction uses vacuum ester to seal the water-bath heater, flask, containing the container and the test tube of liquid nitrogen fixes by support.
2. method of extracting soil sample moisture, it is characterized in that: in flask, place soil sample, utilize vavuum pump to take air in the device away earlier, make to be in vacuum in the device, adopt the water-bath heating then, keep 100 degrees centigrade of temperature constant, in the continuous supplementing water water-bath heater, keep flask to immerse in the water all the time, and observe barometrical numerical value in the heating process, when atmospheric pressure value raises, replenish liquid nitrogen in the container of containing liquid nitrogen, the water in the soil sample is constantly vaporized and is entered test tube like this, and constantly is condensed into ice in test tube, work like this and continue 5-7 hour, powered-down stops heating then, and test tube is taken out, melt the ice in the test tube, can obtain the moisture in the soil sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010158497 CN101934157A (en) | 2010-04-27 | 2010-04-27 | Device and method for extracting water content of soil sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010158497 CN101934157A (en) | 2010-04-27 | 2010-04-27 | Device and method for extracting water content of soil sample |
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| CN101934157A true CN101934157A (en) | 2011-01-05 |
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| CN 201010158497 Pending CN101934157A (en) | 2010-04-27 | 2010-04-27 | Device and method for extracting water content of soil sample |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809504A (en) * | 2012-08-16 | 2012-12-05 | 同济大学 | Pressure-controllable multifunctional soil sample heating test system |
| CN103908796A (en) * | 2014-04-03 | 2014-07-09 | 核工业理化工程研究院 | Movable type evacuating device |
| CN105910867A (en) * | 2016-05-05 | 2016-08-31 | 河南理工大学 | Simple device for quickly preparing rock soil samples different in water content |
| CN108398294A (en) * | 2018-01-31 | 2018-08-14 | 河海大学 | A kind of extraction soil water installations and its extracting method |
| CN108458913A (en) * | 2018-01-22 | 2018-08-28 | 中国地质大学（武汉） | A kind of aquiclude pore water14C extraction elements and method |
| CN109115553A (en) * | 2018-09-03 | 2019-01-01 | 甘肃农业大学 | A kind of closed circulation trace plant tissue moisture high-efficiency device for extracting |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101318150A (en) * | 2007-12-14 | 2008-12-10 | 王庆良 | Gas collection apparatus with water discharge method |
| CN201356987Y (en) * | 2008-12-09 | 2009-12-09 | 江苏海狮机械集团有限公司 | Evacuating device in petroleum solvent distillation machine |
| CN201392289Y (en) * | 2009-04-21 | 2010-01-27 | 中国科学院遗传与发育生物学研究所 | Water sample extractive distillation apparatus |
| CN201653953U (en) * | 2010-04-27 | 2010-11-24 | 河海大学 | Apparatus for extracting soil sample moisture |
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2010
- 2010-04-27 CN CN 201010158497 patent/CN101934157A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101318150A (en) * | 2007-12-14 | 2008-12-10 | 王庆良 | Gas collection apparatus with water discharge method |
| CN201356987Y (en) * | 2008-12-09 | 2009-12-09 | 江苏海狮机械集团有限公司 | Evacuating device in petroleum solvent distillation machine |
| CN201392289Y (en) * | 2009-04-21 | 2010-01-27 | 中国科学院遗传与发育生物学研究所 | Water sample extractive distillation apparatus |
| CN201653953U (en) * | 2010-04-27 | 2010-11-24 | 河海大学 | Apparatus for extracting soil sample moisture |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102809504A (en) * | 2012-08-16 | 2012-12-05 | 同济大学 | Pressure-controllable multifunctional soil sample heating test system |
| CN102809504B (en) * | 2012-08-16 | 2014-08-13 | 同济大学 | Pressure-controllable multifunctional soil sample heating test system |
| CN103908796A (en) * | 2014-04-03 | 2014-07-09 | 核工业理化工程研究院 | Movable type evacuating device |
| CN105910867A (en) * | 2016-05-05 | 2016-08-31 | 河南理工大学 | Simple device for quickly preparing rock soil samples different in water content |
| CN105910867B (en) * | 2016-05-05 | 2018-07-17 | 河南理工大学 | A kind of simple device quickly preparing different water cut ground sample |
| CN108458913A (en) * | 2018-01-22 | 2018-08-28 | 中国地质大学（武汉） | A kind of aquiclude pore water14C extraction elements and method |
| CN108398294A (en) * | 2018-01-31 | 2018-08-14 | 河海大学 | A kind of extraction soil water installations and its extracting method |
| CN109115553A (en) * | 2018-09-03 | 2019-01-01 | 甘肃农业大学 | A kind of closed circulation trace plant tissue moisture high-efficiency device for extracting |
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Application publication date: 20110105 |