CN2781356Y - Depressimeter for measuring water content of soil - Google Patents
Depressimeter for measuring water content of soil Download PDFInfo
- Publication number
- CN2781356Y CN2781356Y CN 200520017530 CN200520017530U CN2781356Y CN 2781356 Y CN2781356 Y CN 2781356Y CN 200520017530 CN200520017530 CN 200520017530 CN 200520017530 U CN200520017530 U CN 200520017530U CN 2781356 Y CN2781356 Y CN 2781356Y
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- soil
- depressimeter
- communicating pipe
- utility
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model relates to a negative pressure meter for measuring the water content of soil, which is composed of a porous ceramic bottle, a pressure gauge, a rubber bag, a communicating pipe, a switch and a deaerating chamber. When the utility model is used, a hole is vertically drilled at an observation field, the negative pressure meter is put into the hole slowly, a rubber plug of the deaerating chamber is opened, antifreeze solutions are added, the rubber plug is plugged tightly, the periphery of the negative pressure meter is filled by fine soil and the observation can be carried out. The utility model has the advantages of simple structure and convenient operation. The utility model is suitable for the measurement for-the water content of the soil in a cold area.
Description
Technical field
The utility model relates to a kind of depressimeter of surveying soil moisture content.
Background technology
Measuring the essential method of soil moisture content is the soil sample of getting certain depth with earth boring auger, and the aluminium box of packing into is weighed, and opens the aluminium box, is put in 105 ℃ of oven for drying, and taking-up closes the lid, and weighs after the cooling, just can calculate soil moisture content.This method is destroyed very big to the soil environment of observation field, when precipitation and irrigation, moisture is very fast along oozing under the hole of fetching earth, and must fill up the hole of fetching earth with fine earth after then fetching earth at every turn.In order to reduce the trouble that fetches earth, but at present the most frequently used be that sensing element is embedded in the soil just measured soil water cut.For example: 1, insert in the soil, measure conductance, but it is very big influenced by soil salt content with two carbon-points.2, be put in the soil with cobalt 60 radioactive sources, meter slow neutron number, but be subjected to organism in the soil (as root system) content influence very big.3, the porous porcelain vase is embedded in the soil, water in bottle divides and the outer soil moisture of bottle exchanges, and when pressure reduction ∠ 0.8 atmospheric pressure, the bottle wall is air tight, measures the interior negative pressure of bottle, just records soil moisture content, but easily freezes.
The utility model has designed a kind of depressimeter of surveying soil moisture content according to the problem of measuring soil moisture content at present, and this depressimeter is simple in structure, and is easy to operate, is applicable to the mensuration of severe cold area soil moisture content.
Summary of the invention
The utility model purpose is to design a kind of depressimeter of surveying soil moisture content, and this depressimeter is made up of porous porcelain vase, pressure gauge, rubber bulb, communicating pipe, switch and deaerating chamber; During use, vertically punch at observation field, slowly put into the hole after filling water in the depressimeter porcelain vase, open the plug of deaerating chamber, add anti freezing solution, the jam-pack plug is may observe with fine earth with filling up around the depressimeter again.This depressimeter is simple in structure, and is easy to operate, is applicable to the mensuration of severe cold area soil moisture content.
A kind of depressimeter of surveying soil moisture content described in the utility model, this depressimeter is made up of porous porcelain vase, pressure gauge, rubber bulb, communicating pipe, switch and deaerating chamber; In porcelain vase (1) by fixing communicating pipe (4) of rubber plug (3), the lower end rubber belt (2) of communicating pipe (4), the top of communicating pipe (4) is fixation pressure meter (5), switch (8) and deaerating chamber (6) respectively, and the mouth place, top of deaerating chamber (6) seals with rubber plug (7).
Description of drawings
Referring to accompanying drawing
Fig. 1 is the utility model structural representation
Embodiment
Further describe and provide embodiment below in conjunction with accompanying drawing
A kind of depressimeter of surveying soil moisture content described in the utility model, this depressimeter is made up of porous porcelain vase, pressure gauge, rubber bulb, communicating pipe, switch and deaerating chamber; In porcelain vase (1) by fixing communicating pipe (4) of rubber plug (3), the lower end rubber belt (2) of communicating pipe (4), the top of communicating pipe (4) is fixation pressure meter (5), switch (8) and deaerating chamber (6) respectively, and the mouth place, top of deaerating chamber (6) seals with rubber plug (7).During use, at first will fill water in the porcelain vase (1), in rubber strip (2), add the lower end that anti freezing solution is enclosed within communicating pipe (4), communicating pipe (4) is put into porcelain vase (1), with plug (3) sealing, vertically punch at observation field then, depressimeter is slowly put into the hole, open the plug (7) of deaerating chamber (6), add anti freezing solution, jam-pack plug (7) gets final product filling up around the depressimeter with fine earth again; Before the observation, earlier soil in the observation field is taken out, do the correlogram of soil moisture content and pressure gauge (5) reading, regularly read the reading of pressure gauge (5) every day, can obtain the soil moisture content on the same day.When in the deaerating chamber (6) gas being arranged, first off switch (8) is opened the plug (7) on the deaerating chamber (6), adds anti freezing solution to full, and jam-pack plug (7) is opened switch (8) and got final product normal observation.
Claims (1)
1, a kind of depressimeter of surveying soil moisture content is characterized in that this depressimeter is made up of porous porcelain vase, pressure gauge, rubber bulb, communicating pipe, switch and deaerating chamber; In porcelain vase (1) by fixing communicating pipe (4) of rubber plug (3), the lower end cover of communicating pipe (4) is by the rubber strip (2) of sealing, the top of communicating pipe (4) is fixation pressure meter (5), switch (8) and deaerating chamber (6) respectively, and the mouth place, top of deaerating chamber (6) seals with rubber plug (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520017530 CN2781356Y (en) | 2005-04-20 | 2005-04-20 | Depressimeter for measuring water content of soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520017530 CN2781356Y (en) | 2005-04-20 | 2005-04-20 | Depressimeter for measuring water content of soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2781356Y true CN2781356Y (en) | 2006-05-17 |
Family
ID=36762558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520017530 Expired - Fee Related CN2781356Y (en) | 2005-04-20 | 2005-04-20 | Depressimeter for measuring water content of soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2781356Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210899B (en) * | 2006-12-27 | 2010-08-11 | 中国科学院沈阳应用生态研究所 | Method and device for determining soil moisture |
| CN109030778A (en) * | 2018-07-20 | 2018-12-18 | 中国农业科学院农田灌溉研究所 | The soil moisture monitor of direct-connected pressure vacuum gauge |
-
2005
- 2005-04-20 CN CN 200520017530 patent/CN2781356Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101210899B (en) * | 2006-12-27 | 2010-08-11 | 中国科学院沈阳应用生态研究所 | Method and device for determining soil moisture |
| CN109030778A (en) * | 2018-07-20 | 2018-12-18 | 中国农业科学院农田灌溉研究所 | The soil moisture monitor of direct-connected pressure vacuum gauge |
| CN109030778B (en) * | 2018-07-20 | 2023-10-20 | 中国农业科学院农田灌溉研究所 | Soil moisture monitor directly connected with vacuum pressure gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |