CN2354130Y - Duplex soil-water tension meter - Google Patents
Duplex soil-water tension meter Download PDFInfo
- Publication number
- CN2354130Y CN2354130Y CN 98242319 CN98242319U CN2354130Y CN 2354130 Y CN2354130 Y CN 2354130Y CN 98242319 CN98242319 CN 98242319 CN 98242319 U CN98242319 U CN 98242319U CN 2354130 Y CN2354130 Y CN 2354130Y
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- CN
- China
- Prior art keywords
- tensiometer
- soil
- rod
- water
- porous
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a duplex soil-water tension meter. A plurality of porous pottery clay heads are fixed on different positions of the rod body of the tension meter, and the upper end of each porous pottery clay head is respectively connected with a water filling pipe and an exhaust pipe in a sealed mode. One end of the water filling pipe is extended to the bottom surface position of the inner part of the porous pottery clay head, and the other end of the water filling pipe is connected with a show meter head in a sealed mode. One end of the exhaust pipe is positioned on the upper end position of the inner part of the porous pottery clay head, and the other end of the exhaust pipe is matched with an exhaust valve. The duplex soil-water tension meter can simultaneously measure the water suction force of different layers of soil, so people can utilize the utility model to judge the flowing direction of the moisture content in the soil to be favorable for controlling the irrigation and the drainage of fields.
Description
The utility model belongs to the observation and control technology field, relates to a kind of sensor of testing soil water suction force, particularly a kind of compound holard tensiometer (G
01L
5/ 04).
The high-yield cultivating of the different growing of Different Crop and crop of the same race is very close to the dependence of soil water potential, and the soil moisture tension meter is to be used for the instrument of the testing soil flow of water (moisture tension).The sensing element pot clay end of tensiometer is a kind of porous body, behind the whole water-fillings of the hole in the pot clay end, water in the hole just has tension force, this tension force can guarantee that water passes through pot clay end under certain pressure, but stop air to pass through, when tensiometer is full of water fully, sealing and with after soil closely contacts, the size of soil water potential can show by U type mercury table or the pressure vacuum gauge on the soil moisture tension meter, because existing soil moisture tension meter and other are used to measure the utensil of soil water content, for example Chinese patent 88219093.8 disclosed " Pen type humidometer " and Chinese patent 95239050.7 disclosed " Watering indicator " all can only show the moisture of a certain aspect in the soil, because existing soil moisture tension meter is the water suction force of measured soil different levels simultaneously, so people are difficult to utilize existing soil moisture tension meter to judge the direction of water flow in the soil, this will be unfavorable for regulating and control farmland irrigating drainage.
The purpose of this utility model is to provide a kind of compound holard tensiometer, this compound holard tensiometer is the water suction force of measured soil different levels simultaneously, so people can utilize it to judge the direction of water flow in the soil, be beneficial to farmland irrigating drainage, thereby overcome the existing in prior technology weak point.
Task of the present utility model is finished in the following manner, a kind of compound holard tensiometer, be sealed with a charging pipe and a gas outlet respectively in the upper end of porous pot clay end, one end of charging pipe extends the basal surface position place of porous pot clay end inside, its other end and display gauge head sealing-in, one end of gas outlet then is in the upper end position place of porous pot clay end inside, its other end is combined with a vent valve, and its key is to be fixed with some above-mentioned porous pot clay ends on the different parts of the tensiometer body of rod.
For the convenience of making and using, the fixed form of the tensiometer body of rod and porous pot clay end can adopt the nodular structure, promptly fix a joint tensiometer body of rod on porous pot clay end top bottom, then fix a porous pot clay end on the top of this tensiometer body of rod, and then fix another on this porous pot clay end top and save the tensiometer body of rod ... can produce compound holard tensiometer according to different request for utilizations like this with respective numbers porous pot clay end.Certainly, be in desirable soil layer position respectively in order to make above-mentioned porous Tao the higher authorities, above-mentioned each tensiometer body of rod also can be according to different requirement employing length separately.
The fixed form of the tensiometer body of rod and porous pot clay end is except adopting above-mentioned nodular structure, can also adopt other fit form, for example can on the differing heights position of the tensiometer body of rod, offer some fenestras, assemble above-mentioned porous pot clay end respectively at each fenestra position, this equally also can produce compound holard tensiometer described in the utility model.In order to be convenient to adjust the residing height and position of each porous pot clay end, even each porous pot clay end binding can be fixed on the tensiometer body of rod.
Above-mentioned display gauge head can adopt pressure vacuum gauge identical with traditional holard tensiometer or U type mercury table, can certainly utilize other existing data acquisition unit to replace above-mentioned display gauge head.
Above-mentioned gas outlet and vent valve for can be conveniently in the porous pot clay end water-filling and being provided with, when water-filling in the porous pot clay end, the vent valve that is fixed on gas outlet one end is opened, so that the air in the porous pot clay end discharges, water can be entered in the porous pot clay end, until it is full of smoothly.In case water filling process finishes, and should close the vent valve that is fixed on gas outlet one end at once, so above-mentioned vent valve can directly adopt spring clamp.
Below in conjunction with accompanying drawing shown in the embodiment the utility model is described in further detail.
Fig. 1 is the contour structures synoptic diagram of compound holard tensiometer;
Fig. 2 is the cross-sectional view of compound holard tensiometer.
With reference to Fig. 1, be sealed with a porous pot clay end 2 in the lower end of the tensiometer body of rod 1, and the differing heights position of the tensiometer body of rod 1 also is fixed with some porous pot clay ends 2 respectively, the upper end that charging pipe 3 that each porous pot clay end 2 top sealing-in and gas outlet 4 all come together in the body of rod 1, the end of wherein each charging pipe 3 respectively with separately display gauge head 5 sealing-ins, the end of wherein each gas outlet 4 then is combined with a spring clamp 6 respectively.
With reference to Fig. 2, the upper end open place of each porous pot clay end 2 is combined with the tensiometer body of rod 1 respectively, in fact the tensiometer body of rod 1 in the present embodiment has adopted porous exhaust sealing plug, the suitable location of this porous exhaust sealing plug offers the aperture 11 of some respectively, described charging pipe 3 and gas outlet 4 are through the upper position place of above-mentioned aperture 11 sealing-ins at porous pot clay end 2, except that a porous pot clay end 2 bottom, also offer the aperture 21 of some on the bottom surface of remaining porous pot clay end 2, be beneficial to sealing-in and be in charging pipe 3 on the porous pot clay end 2 of lower position and gas outlet 4 all come together in the tensiometer body of rod 1 through above-mentioned aperture 21 the top.The top of the one tensiometer body of rod 1 that saves has additional a top cover 7 in the top, also offers the aperture 71 of some on this top cover, so that allow all charging pipes 3 and gas outlet 4 all stretch to the outside through this aperture 71.
Principle of work of the present utility model is: with the water-filled compound holard tensiometer certain depth of placing into the soil, this moment, each porous pot clay end was in soil layer position separately respectively, when the moisture in the soil is in undersaturated condition, soil will be drawn the interior moisture of porous pot clay end by the porous pot clay end, owing to being sucked out, moisture produces vacuum tightness in the porous pot clay end, the vacuum tightness that produces in the dry more control porous of the soil pot clay end is just big more, the size of the water absorbing capacity gesture in the soil different levels can be reflected respectively by the display gauge head on the compound holard tensiometer, according to the size variation of the water absorbing capacity gesture in the soil different levels, can also judge the direction of water flow in the soil easily.
The utility model is rational in infrastructure, and is cheap, and the water suction force of measured soil different levels can utilize this compound holard tensiometer to judge the direction of water flow in the soil simultaneously, is beneficial to more scientifically regulate and control farmland irrigating drainage.
Claims (3)
1, a kind of compound holard tensiometer, upper end porous Tao the higher authorities is sealed with a charging pipe and a gas outlet respectively, one end of charging pipe extends the basal surface position place of porous pot clay end inside, its other end and display gauge head sealing-in, one end of gas outlet then is in the upper end position place of porous pot clay end inside, its other end is combined with a vent valve, it is characterized in that being fixed with on the different parts of the tensiometer body of rod some above-mentioned porous pot clay ends, the different parts of the described tensiometer body of rod is meant the lower end of the tensiometer body of rod and the differing heights position of the tensiometer body of rod.
2, according to the compound holard tensiometer of claim 1 regulation, it is characterized in that this display gauge head is pressure vacuum gauge or U type mercury table.
3, according to the compound holard tensiometer of claim 1 or 2 regulations, it is characterized in that described vent valve directly adopts spring clamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242319 CN2354130Y (en) | 1998-10-07 | 1998-10-07 | Duplex soil-water tension meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98242319 CN2354130Y (en) | 1998-10-07 | 1998-10-07 | Duplex soil-water tension meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2354130Y true CN2354130Y (en) | 1999-12-15 |
Family
ID=33988908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98242319 Expired - Fee Related CN2354130Y (en) | 1998-10-07 | 1998-10-07 | Duplex soil-water tension meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2354130Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937643A (en) * | 2012-11-15 | 2013-02-20 | 西北农林科技大学 | Split-type tensionmeter connected through soft pipes and used for measuring soil water potential |
| CN104391105A (en) * | 2014-12-03 | 2015-03-04 | 南京林业大学 | Water-free soil matrix potential profile measurement device |
| CN105486838A (en) * | 2015-12-25 | 2016-04-13 | 中国科学院南京土壤研究所 | Convenient-to-maintain antifreezing tensiometer measuring soil water potential and test method |
| CN106771084A (en) * | 2017-01-20 | 2017-05-31 | 武汉大学 | A kind of differential pressure type soil matrix gesture measurement apparatus |
| 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 |
-
1998
- 1998-10-07 CN CN 98242319 patent/CN2354130Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937643A (en) * | 2012-11-15 | 2013-02-20 | 西北农林科技大学 | Split-type tensionmeter connected through soft pipes and used for measuring soil water potential |
| CN104391105A (en) * | 2014-12-03 | 2015-03-04 | 南京林业大学 | Water-free soil matrix potential profile measurement device |
| CN104391105B (en) * | 2014-12-03 | 2016-01-20 | 南京林业大学 | A kind of anhydrous soil matrix gesture profile survey device |
| CN105486838A (en) * | 2015-12-25 | 2016-04-13 | 中国科学院南京土壤研究所 | Convenient-to-maintain antifreezing tensiometer measuring soil water potential and test method |
| CN106771084A (en) * | 2017-01-20 | 2017-05-31 | 武汉大学 | A kind of differential pressure type soil matrix gesture measurement apparatus |
| 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 |