CN202854015U - Lysimeter - Google Patents

Abstract

The utility model discloses a lysimeter which comprises an upper cover, a base, a sleeve seat, a screw rod and a water inlet pipe, wherein the upper cover is fixed on the base; the upper cover is provided with a water inlet; the base is provided with a water outlet; the sleeve seat comprises a cross beam and a vertical rod which are vertically connected with each other; the vertical rod is fixed on the base; the screw rod is connected on the cross beam of the sleeve seat; the bottom end of the screw rod leans against the upper cover; the water inlet pipe is connected with the water inlet of the upper cover; the lysimeter further comprises an air compressor; and the air compressor is connected with the water inlet pipe. The air compressor is assembled into the lysimeter and is connected with the water inlet pipe, so that the water inlet pipe can be pressurized, the water inlet pressure does not only depend on the water pressure of the water inlet pipe, the data range of a penetration test is wider, and the water inlet pressure can be tested when the water inlet pressure is higher; furthermore, the air pressure is increased by the water inlet pressure, and the height of the water inlet pipe is properly lowered, so that the lysimeter has the characteristic of being compact in structure.

Description

A kind of lysimeter

Technical field

The utility model relates to a kind of permeameter, more specifically is a kind of vertical lysimeter, dependent territory worker's test apparatus technical field.

Background technology

The incoherence soil that lysimeter can be measured sandy soil and contain a small amount of gravel carries out permeability test under constant head, existing lysimeter mainly comprises loam cake, base, block set, screw rod and water inlet pipe, loam cake is fixed on the base, on cover and be provided with the inlet opening, base is provided with apopore, block set comprises mutual crossbeam connected vertically and montant, and montant is fixed on the base; Screw rod is connected on the crossbeam of block set and the screw rod bottom withstands on and covers, and water inlet pipe is connected with the inlet opening of loam cake.During the work of above-mentioned lysimeter, place soil pattern in base, the hydraulic pressure by water inlet pipe is injected into water in the base, and current flow out from apopore behind soil pattern, draw the soil permeability performance by the relation between the hydraulic pressure of flow and water inlet pipe.The lysimeter of said structure has the characteristics such as simple in structure, easy to operate, but because the pressure of its water inlet only relies on the hydraulic pressure of water inlet pipe, make the data area of permeability test wideless on the one hand, fail to testing in the larger situation of intake pressure, on the other hand, because the pressure of its water inlet only relies on the hydraulic pressure of water inlet pipe, requires water inlet pipe to have corresponding height, makes the volume of instrument larger.

The utility model content

For above-mentioned situation, the data area that the problem that the utility model quasi-solution is determined provides a kind of permeability test is wide, can to the lysimeter of testing in the larger situation of intake pressure, have simultaneously the characteristics of compact conformation.

For addressing the above problem, the utility model has adopted following technical scheme: a kind of lysimeter, it comprises loam cake, base, block set, screw rod and water inlet pipe, described loam cake is fixed on the base, cover on described and be provided with the inlet opening, described base is provided with apopore, and described block set comprises mutual crossbeam connected vertically and montant, and described montant is fixed on the base; Described screw rod is connected on the crossbeam of block set and the bottom of screw rod withstands on and covers, and described water inlet pipe is connected with the inlet opening of loam cake, and it also comprises air compressor, and described air compressor is connected with the water inlet pipe pipeline.

Be provided with pressure transducer in the described water inlet pipe.

Adopt said structure, because lysimeter group of the present utility model has entered air compressor, air compressor is connected with the water inlet pipe pipeline, like this can be by to water inlet pipe pressurization, make the pressure of its water inlet not only rely on the hydraulic pressure of water inlet pipe, make the data area of permeability test wider, can be to testing in the larger situation of intake pressure, the pressure of simultaneously its water inlet has increased air pressure, can suitably reduce the height of water inlet pipe, makes the characteristics of the compact conformation of instrument.

Description of drawings

Fig. 1 is the structural representation of the utility model lysimeter.

Among the figure: 1-loam cake, 2-base, 3-screw rod, 4-water inlet pipe, 5-inlet opening, 6-apopore, 7-crossbeam, 8-montant, 9-air compressor, 10-pressure transducer.

Embodiment

As shown in Figure 1, lysimeter of the present utility model, it comprises loam cake 1,base 2, block set,screw rod 3 andwater inlet pipe 4, described loam cake 1 is fixed on thebase 2, described loam cake 1 is provided withinlet opening 5, describedbase 2 is provided withapopore 6, and described block set comprises mutual crossbeam connected vertically 7 andmontant 8, and describedmontant 8 is fixed on thebase 2; Describedscrew rod 3 is connected on thecrossbeam 7 of block set and the bottom ofscrew rod 3 withstands on the loam cake 1, and describedwater inlet pipe 4 is connected with the inlet opening 6 of loam cake 1.The lysimeter of said structure and prior art does not have the difference of essence, therefore, no longer launches to describe.

The characteristics of lysimeter of the present utility model are that it also comprisesair compressor 9, and describedair compressor 9 is connected withwater inlet pipe 4 pipelines.In addition, but settingpressure sensor 10 in the describedwater inlet pipe 4, thisclass pressure transducer 10 need to have water resistance, andpressure transducer 10 also is connected with the control assembly signal of lysimeter simultaneously.

Claims (2)

1. lysimeter, it comprises loam cake (1), base (2), block set, screw rod (3) and water inlet pipe (4), described loam cake (1) is fixed on the base (2), described loam cake (1) is provided with inlet opening (5), described base (2) is provided with apopore (6), described block set comprises mutual crossbeam connected vertically (7) and montant (8), and described montant (8) is fixed on the base (2); Crossbeam (7) bottom upper and screw rod (3) that described screw rod (3) is connected to block set withstands on the loam cake (1), described water inlet pipe (4) is connected with the inlet opening (6) of loam cake (1), it is characterized in that it also comprises air compressor (9), described air compressor (9) is connected with water inlet pipe (4) pipeline.

2. lysimeter according to claim 1 is characterized in that being provided with in the described water inlet pipe (4) pressure transducer (10).

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