CN204694602U - A kind of measurement capillary soil water climbing height test unit - Google Patents
A kind of measurement capillary soil water climbing height test unit Download PDFInfo
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- CN204694602U CN204694602U CN201520417239.9U CN201520417239U CN204694602U CN 204694602 U CN204694602 U CN 204694602U CN 201520417239 U CN201520417239 U CN 201520417239U CN 204694602 U CN204694602 U CN 204694602U
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Abstract
The utility model discloses a kind of measurement capillary soil water climbing height test unit, comprise the water level circulating water chennels such as the temperature control be arranged on base, for providing the water of temperature constant for pedotheque; Bracing frame, its lower end is connected to the water level circulating water chennels such as temperature control, and upper end is connected with at least one fixed support; Fixed support is provided with and passes and the hole fixed for earth pillar; Earth pillar, for accommodating pedotheque.Test unit disclosed in the utility model clear, intuitively can represent motion process and the feature of capillary water in soil, measures the capillary water height of various quality soil.
Description
Technical field
The utility model relates to a kind of test unit, particularly relates to a kind of test unit for measuring capillary soil water climbing height.
Background technology
Below ground, to the region of water table, is the simultaneous complication system of solid, liquid, gas three-phase.In this region, the moisture that underground water rises by the capillary action of native interparticle pore is capillary water, and capillary water is subject to water and air interface place surface tension effects.In S line number complex process, be distributed in the inner mutually through hole of grogs, differ shape physically can be considered as, varying diameters, the kapillary communicated with each other.
Because the kind of soil is different, in soil, capillary water height is subject to the impact of the particle diameter of soil, the size of hole and distribution, temperature, infiltration coefficient, saliferous kind etc., intuitive and accurately cannot determine the capillary water height of natural soil layer.Capillary water is the important component part of vadose water, and its lifting height is directly connected to local hydrological environment.When underground water table buries chin-deep, capillary water may cannot rise to earth's surface forever; When groundwater level depth is more shallow, there is molten pouring after easily causing humidity, frost heave, frost boiling, salination, crack, depression, precipitation and muddy.When capillary water height is unreasonable, agricultural, traffic railway transportation, building industry etc. can be endangered, therefore there is the capillary water height that huge reality need studies various temperature condition, different regions, the different soil of quality.
For the problems referred to above, the capillary water height that some laboratory experiment methods test a Soils In The Region has been developed in this area, conventional effective method is vertical tube method, but the defect of these class methods existing is can only fix a condition at every turn, test a kind of sample.When facing the capillary water height testing different soil property, need to carry out in batches, whole test process expends time in, and man power and material's cost is all very high, cannot extensively be suitable for.
Summary of the invention
For the needs of prior art, the utility model discloses a kind of measurement capillary soil water climbing height test unit, carry out many group capillary water heights of soil and the test job of speed under achieving the conditions such as multiple soil sample, temperature by structure improvement simultaneously, and whole test process visual pattern, be easy to operation.
Specifically, the utility model is achieved by the following technical solution:
A kind of measurement capillary soil water climbing height test unit, comprises the water level circulating water chennels such as the temperature control be arranged on base, for providing the water of temperature constant for pedotheque; Bracing frame, its lower end is connected to the water level circulating water chennels such as temperature control, and upper end is connected with at least one fixed support; Fixed support is provided with and passes and the hole fixed for earth pillar; Earth pillar, for accommodating pedotheque.
Pass through said structure, the earth pillar of different soils sample can be held by carry many groups on different fixed supports, utilize the water level circulating water chennels such as temperature control to provide the wetting water of temperature constant for these pedotheques, the lifting height risen along hole under the capillary force that research water is produced to each other in different soils sample after water and soil contact or absorption affinity effect is (until the gravity of liquid and capillary raising force balance.The maximum height that now liquid rises is the capillary rise height of soil).
In order to be applicable to different earth pillar types, support frame as described above is retractable support frame.
In order to improve the durability of product, usual above-mentioned bracing frame adopts metal material or alloy material, is preferably stainless steel and makes.
In test unit of the present utility model, can in several ways bracing frame be fixed.Preferably, one end of support frame as described above is helicitic texture, and the other end is bolt structure; Be provided with hollow cylinder in the central authorities of the water level circulating water chennels such as temperature control, bracing frame lower end is fixedly connected in hollow cylinder.
By the way, the bracing frame changing different size is convenient to.
Test unit of the present utility model, the water level circulating water chennels such as described temperature control can be designed to required form as required.In order to ensure stability when the multiple earth pillar of carry, preferably cylindrical, and be divided into the water chamber of inner ring and the spill cavity of outer ring by overflow plate, water chamber is connected to supply tank by aqueduct, and aqueduct is immersed in water-filled heating cabinet; Arrange osculum bottom spill cavity, osculum is connected to supply tank by outlet conduit; Pipeline is provided with peristaltic pump and drives water circulation.
By the way, fixed support can along bracing frame annular spread, and it is laterally inclined that whole device is not easy generation; Use above-mentioned water system, ensure that to stablize on the one hand provides temperature required thermostatted water in tank, on the other hand also can the quick adjustment water yield.
In order to better control temperature, ensure that water temperature is constant, bottom water chamber, be provided with temperature control heating rod.
In test unit of the present utility model, described earth pillar lower end is closed by glass wool.
In order to learn the height of liter waterborne intuitively, fast, described earth pillar is that graduated pipe is carved on surface.
In order to grasp the change of water temperature in real time, be also provided with temperature sensor in water chamber, described temperature sensor is connected to computer data acquisition system.
Accompanying drawing explanation
Fig. 1 is test unit structural representation of the present utility model.
In the drawing, each numerology is as follows: water level circulating water chennel, 21-water chamber, 22-overflow plate, 23-spill cavity, 24-hollow cylinder, 3-bracing frame, 4-fixed support, 5-earth pillar, 51-pedotheque, 52-glass wool, 61-heating cabinet, 62-peristaltic pump, the 63-supply tanks such as 1-base, 2-temperature control.
Embodiment
Below in conjunction with accompanying drawing, structure of the present utility model is further described.In following enforcement, the size, material, shape, quantity etc. of applicant to the utility model test unit have carried out detailed explanation, and this is only schematic, does not form to be particularly limited to, and the accompanying drawing provided is also non-to be drawn in proportion.Those skilled in the art, understanding and grasping on the basis of connotation of the present invention, still belong to protection domain of the present utility model to its improvement carried out.
Shown in figure 1, test unit of the present utility model, forms primarily of following structure member:
Be arranged on the water level circulating water chennels 2 such as the temperature control on base 1, be the column type tank of high 200mm, diameter 700mm, the thick 10mm of tank, is divided into water chamber 21 and spill cavity 23 by the overflow plate 22 of thick 10mm, high 250mm.
Tank central authorities are provided with the cylinder 24 of diameter 80mm, high 250mm, be diameter 60mm, high 120mm hollow-core construction in the middle of cylinder, the stainless steel retractable support frame 3 of diameter 60mm, high 600mm is fixed with in this hollow-core construction, one end of bracing frame 3 is 50mm helicitic texture, and the other end is long 50mm bolt structure.
Bracing frame 3 body is provided with the fixed support 4 that multiple length be connected with retractable support frame by bolt is 500mm, can from Row sum-equal matrix setting height(from bottom).
Fixed support is equipped with circular hole, for through the PVC plastic pipeclay post 5 with fixed diameter 30mm wall thickness 3mm, in earth pillar 5, accommodates pedotheque 51 to be tested, and lower end glass wool 52 is closed.
Device of the present utility model, the water system of tank is for being supply tank 63, and the specification of supply tank is 200mm × 200mm × 200mm, the PVC material casing of thick 10mm, supplies water to experiment by the peristaltic pump 52 of constant flow.Bottom spill cavity, osculum is set, is connected with peristaltic pump, by unnecessary water circulation to supply tank.
Wherein, water pipeline is provided with heating cabinet 61 and is heated to temperature required for water, the specification of this heating cabinet is 50mm × 50mm × 300mm, and the PVC material casing of thick 10mm, places temperature control heating rod bottom heating cabinet, be full of water in heating cabinet.The water pipe of peristaltic pump is positioned in heating cabinet.By the water in the hot water heating peristaltic pump in water tank.
In order to better control temperature, also place temperature control heating rod bottom water chamber, after reaching set temperature, heating rod is temperature constant state.
Meanwhile, in water chamber, be also mounted with temperature sensor, by the water temperature information in computer data acquisition system Real-time Collection water chamber.
Device principle of work of the present utility model is: before earth pillar is placed in water chamber, and soil is virgin state; After on-test, water rises bottom earth pillar, finally reaches stable lifting height, and this highly i.e. capillary water height.Record capillary water rises to certain altitude h and corresponding time t, capillary water climbing speed v=h/t.
The operation steps of this test unit is: accurately take after a certain amount of soil loads earth pillar and constantly vibrate, until soil packed height no longer reduces, lower end glass wool (invade by wetting fluid and steep and boiled) is sealed; One, the water pipe of peristaltic pump is positioned over supply tank, and other end is positioned in water chamber; Osculum bottom spill cavity and supply tank is connected with a drainpipe; Be that the water pipe that water chamber is poured water is positioned in the water of heating cabinet by peristaltic pump after pouring water, after water is filled, open firing equipment until water chamber reaches target temperature; Fixed support is adjusted to earth pillar and just go deep into water chamber 2mm place, fixing earth pillar, record start time t0, record the height change h1 that capillary water rises simultaneously, h2, h3, h4, h5 and corresponding time t1, t2, t3, t4, t5.Observe solution rise in earth pillar highly stable time, namely record the capillary water height of this soil.
Claims (8)
1. measure a capillary soil water climbing height test unit, it is characterized in that comprising the water level circulating water chennels such as the temperature control be arranged on base, for providing the water of temperature constant for pedotheque; Bracing frame, its lower end is connected to the water level circulating water chennels such as temperature control, and upper end is connected with at least one fixed support; Fixed support is provided with and passes and the hole fixed for earth pillar; Earth pillar, for accommodating pedotheque.
2. test unit according to claim 1, is characterized in that support frame as described above is retractable support frame.
3. described test unit according to claim 1, it is characterized in that one end of support frame as described above is helicitic texture, the other end is bolt structure; Be provided with hollow cylinder in the central authorities of the water level circulating water chennels such as temperature control, bracing frame lower end is fixedly connected in hollow cylinder.
4. described test unit according to claim 1, it is characterized in that the water level circulating water chennels such as described temperature control are cylindrical, be divided into the water chamber of inner ring and the spill cavity of outer ring by overflow plate, water chamber is connected to supply tank by aqueduct, and aqueduct is immersed in water-filled heating cabinet; Arrange osculum bottom spill cavity, osculum is connected to supply tank by outlet conduit; Pipeline is provided with peristaltic pump and drives water circulation.
5. described test unit according to claim 4, is characterized in that being provided with temperature control heating rod bottom water chamber.
6. described test unit according to claim 1, is characterized in that described earth pillar lower end is closed by glass wool.
7. described test unit according to claim 1, is characterized in that described earth pillar is for carving graduated pipe in surface.
8. described test unit according to claim 1, it is characterized in that also being provided with temperature sensor in water chamber, described temperature sensor is connected to computer data acquisition system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520417239.9U CN204694602U (en) | 2015-06-17 | 2015-06-17 | A kind of measurement capillary soil water climbing height test unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520417239.9U CN204694602U (en) | 2015-06-17 | 2015-06-17 | A kind of measurement capillary soil water climbing height test unit |
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| CN204694602U true CN204694602U (en) | 2015-10-07 |
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| CN201520417239.9U Expired - Fee Related CN204694602U (en) | 2015-06-17 | 2015-06-17 | A kind of measurement capillary soil water climbing height test unit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328697A (en) * | 2017-06-02 | 2017-11-07 | 东南大学 | A kind of capillary water rise test instrument for being directed to coarse grain group or large scale cell cube sample |
| CN108458961A (en) * | 2018-03-28 | 2018-08-28 | 江西理工大学 | A kind of ion type rareearth leaching solution capillary rise pilot system and experimental method |
| CN110208489A (en) * | 2019-05-17 | 2019-09-06 | 济宁市公路工程公司 | The simulation test device and test method of capillary water height in a kind of subgrade soils |
| CN111670780A (en) * | 2020-06-19 | 2020-09-18 | 山东省农业科学院农业资源与环境研究所 | Method for screening soilless culture substrate suitable for drip irrigation system through vertical diffusion and application |
-
2015
- 2015-06-17 CN CN201520417239.9U patent/CN204694602U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107328697A (en) * | 2017-06-02 | 2017-11-07 | 东南大学 | A kind of capillary water rise test instrument for being directed to coarse grain group or large scale cell cube sample |
| CN107328697B (en) * | 2017-06-02 | 2019-09-17 | 东南大学 | It is a kind of for coarse grain group or the capillary water rise test instrument of large scale cell cube sample |
| CN108458961A (en) * | 2018-03-28 | 2018-08-28 | 江西理工大学 | A kind of ion type rareearth leaching solution capillary rise pilot system and experimental method |
| CN110208489A (en) * | 2019-05-17 | 2019-09-06 | 济宁市公路工程公司 | The simulation test device and test method of capillary water height in a kind of subgrade soils |
| CN111670780A (en) * | 2020-06-19 | 2020-09-18 | 山东省农业科学院农业资源与环境研究所 | Method for screening soilless culture substrate suitable for drip irrigation system through vertical diffusion and application |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20151007 Termination date: 20170617 |