CN212321390U

CN212321390U - Water head constant device for measuring soil saturation hydraulic conductivity

Info

Publication number: CN212321390U
Application number: CN202021115847.1U
Authority: CN
Inventors: 宗海宏; 樊剑波
Original assignee: Institute of Soil Science of CAS
Current assignee: Institute of Soil Science of CAS
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2021-01-08
Anticipated expiration: 2030-06-16

Abstract

The utility model provides a water head constant device for measuring the saturated hydraulic conductivity of soil, which comprises a March's flask, wherein a stainless steel pipe is inserted into the March's flask and is arranged on a fine adjustment component, the fine adjustment component is lifted through a screw thread, the top of the March's flask is provided with an air outlet, two sides of the bottom of the March's flask are respectively provided with a water replenishing port and a water outlet, and the three are provided with switches; the water outlet is connected with a water separator, the water separator is provided with a plurality of branch pipes, one branch pipe is communicated with the liquid level meter, the other branch pipes are respectively communicated with a cutting ring component, and the interior of the liquid level meter is communicated with the atmosphere. The utility model provides a pair of invariable device of flood peak for soil saturation hydraulic conductivity survey utilizes the water knockout drum to realize that the one-to-many of mah-jong bottle and cutting ring subassembly supplies water, makes the timing unified, and convenient survey to set up the fine setting subassembly in mah-jong bottle below, conveniently adjust the flood peak, be provided with the level gauge simultaneously, but the current liquid level of visual display, convenient and cutting ring subassembly height contrast realization flood peak control, easy operation, work efficiency height.

Description

Water head constant device for measuring soil saturation hydraulic conductivity

Technical Field

The utility model belongs to the technical field of soil property survey and specifically relates to indicate a invariable device of water head for soil saturation hydraulic conductivity survey.

Background

The saturated water conductivity of soil refers to the amount of water passing through a unit area in unit time when the soil is saturated with water. Different soil properties in different regions, different terrain conditions, different soil depths, different vegetation types and the like all cause different degrees of influence on the saturated hydraulic conductivity of the soil, and in addition, the influence is related to the texture, structure, salinity content, water content and the like of the soil, so that the determination of the saturated hydraulic conductivity of the soil has important scientific significance for further understanding of the physical properties of the soil.

The most common method for measuring the saturated hydraulic conductivity of soil at present is an indoor cutting ring method, and the principle of the method is that an undisturbed soil sample is taken by a cutting ring, and after the sample is soaked in water, the water flow velocity passing through the unit soil sectional area perpendicular to the water flow direction is obtained according to Darcy's law under the unit water pressure gradient, and the obtained velocity is called the saturated hydraulic conductivity or permeability coefficient of the soil.

The conventional indoor cutting ring method comprises the following steps: taking an undisturbed soil sample by using a cutting ring, taking the undisturbed soil sample back to the room, removing an upper cover, and replacing a lower cover with an eyelet bottom cover filled with a layer of filter paper; after the water is saturated, taking an empty cutting ring and a cutting ring sample, bonding the empty cutting ring and the cutting ring sample by using adhesive tape and melt adhesive, and putting the blank on a funnel and taking the blank off the funnel by using a beaker; adding water to the upper empty ring cutter assembly, starting timing when water is dripped from the funnel, measuring the water amount in the beaker by using the measuring cylinder at certain intervals until the water is stably stopped, and calculating the saturated water conductivity of the soil according to Darcy's law.

In the conventional method, each cutting ring works independently, the Markov bottle and the cutting rings are in one-to-one correspondence, and when multiple samples are measured, the heights of the cutting rings are difficult to unify, and the starting times cannot be unified, so that the recording is difficult.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

An object of the utility model is to provide a invariable device of soil saturation water conservancy diversion survey water head realizes the one-to-many water supply of mah-jong bottle and cutting ring, and has the advantage of adjusting convenience, convenient operation, is favorable to improving work efficiency. In order to achieve the above purpose, the utility model adopts the following technical scheme:

(II) technical scheme

A water head constant device for measuring soil saturated hydraulic conductivity comprises a March's flask, wherein a stainless steel pipe is inserted into the March's flask, the March's flask is arranged on a fine adjustment assembly, the fine adjustment assembly is lifted through threads, the top of the March's flask is provided with an air outlet, two sides of the bottom of the March's flask are respectively provided with a water replenishing port and a water outlet, and the three devices are provided with switches; the water outlet is connected with a water separator, the water separator is provided with a plurality of branch pipes, one of the branch pipes is communicated with the liquid level meter, the rest branch pipes are respectively communicated with a cutting ring assembly, and the interior of the liquid level meter is communicated with the atmosphere.

Further, fine setting subassembly is including putting thing board, fine setting support, fine setting screw rod and base, the fine setting screw rod is placed on the base, the fine setting support is fixed put thing board four corners below and establish through the screw thread cover fine setting screw rod is last, the mahalanobis bottle is placed put on the thing board.

Furthermore, the top of the fine adjustment screw is provided with a butterfly nut or a plum blossom nut

Furthermore, each branch pipe is provided with a switch.

Further, the liquid level meter is a glass tube with scales, and the highest point of the scales is higher than the bottom of the stainless steel tube.

(III) advantageous effects

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, utilize the water knockout drum to realize that the one-to-many of mah-jong bottle and cutting ring subassembly supplies water, make the timing unified, convenient survey to set up the fine setting subassembly in mah-jong bottle below, conveniently adjust the flood peak, be provided with the level gauge simultaneously, but visual display current liquid level, conveniently highly contrast with the cutting ring subassembly and realize flood peak control, easy operation, work efficiency height.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall appearance of the present invention.

The reference numbers illustrate:

1. a March bottle;	11. an exhaust port;
		12. a water replenishing port;	13. a water outlet;
2. a stainless steel tube;	3. a water separator;
		31. a branch pipe;	4. a liquid level meter;
5. a ring cutter assembly;	6. and a fine adjustment component.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be further described with reference to the accompanying drawings and the detailed description.

Referring to fig. 1, a water head constant device for measuring a saturated hydraulic conductivity of soil comprises a mahalanobis bottle 1, wherein a stainless steel pipe 2 is inserted in the mahalanobis bottle 1, the mahalanobis bottle 1 is arranged on a fine adjustment component 6, the fine adjustment component 6 is lifted through threads, an exhaust port 11 is formed in the top of the mahalanobis bottle 1, a water replenishing port 12 and a water outlet 13 are respectively formed in two sides of the bottom of the mahalanobis bottle 1, and switches are respectively arranged on the exhaust port, the water replenishing port and the water; the water outlet 13 is connected with a water separator 3, the water separator 3 is provided with a plurality of branch pipes 31, one branch pipe 31 is communicated with the liquid level meter 4, the other branch pipes 31 are respectively communicated with a cutting ring component 5, and the interior of the liquid level meter 4 is communicated with the atmosphere.

The fine adjustment assembly 6 comprises an object placing plate 61, a fine adjustment support 62, a fine adjustment screw 63 and a base 64, the fine adjustment screw 63 is placed on the base 64, the fine adjustment support 62 is fixed below four corners of the object placing plate 61 and is sleeved on the fine adjustment screw 63 through threads, and the Mariotte bottle 1 is placed on the object placing plate 61; the lifting of the Mariotte bottle 1 can be realized by rotating the fine adjustment screw 63, so that the fine adjustment of the water head is realized.

For the convenience of free-hand adjustment, the top of the fine adjustment screw 63 is provided with a butterfly nut or a plum nut.

When the number of the ring cutter assemblies is less than the number of the branch pipes 31, the rest branch pipes need to be closed, so that each branch pipe 31 is provided with a switch to control the switch respectively.

For making the liquid level easily observe, level gauge 4 is the glass pipe with scale, and its scale peak is higher than the bottom of stainless steel pipe 2 simultaneously, prevents to appear the condition that is difficult to observe.

The utility model discloses an application principle does: after connecting the pipelines, adjusting the height of the stainless steel pipe 2 to be close to a preset height, and then enabling the liquid level to be higher than the specific height (generally 5 CM) of the upper surface of the soil column through a fine adjustment assembly 6, wherein the height is the height of a water head; when the liquid level in the Mariotte bottle 1 is lower than the bottom of the stainless steel pipe 2, the water replenishing port 12 is communicated with a water tap, and the water replenishing can be carried out by opening the switches of the exhaust port 11 and the water replenishing port 12 in sequence without detaching the Mariotte bottle 1.

The utility model discloses a design point lies in utilizing the water knockout drum to realize that the one-to-many of mah-jong bottle and cutting ring subassembly supplies water, makes the timing unified, convenient survey to set up the fine setting subassembly in mah-jong bottle below, conveniently adjust the flood peak, be provided with the level gauge simultaneously, but the current liquid level of visual display, convenient and cutting ring subassembly height contrast realization flood peak control, easy operation, work efficiency height.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a soil saturation is flood peak constant device for water conductivity survey, includes mah-jong bottle (1), has inserted stainless steel pipe (2) in this mah-jong bottle (1), its characterized in that: the March's bottle (1) is arranged on the fine adjustment component (6), the fine adjustment component (6) is lifted through threads, the top of the March's bottle (1) is provided with an exhaust port (11), two sides of the bottom of the March's bottle are respectively provided with a water replenishing port (12) and a water outlet (13), and the three are provided with switches; the water outlet (13) is connected with a water distributor (3), the water distributor (3) is provided with a plurality of branch pipes (31), one of the branch pipes (31) is communicated with the liquid level meter (4), the rest branch pipes (31) are respectively communicated with a cutting ring component (5), and the interior of the liquid level meter (4) is communicated with the atmosphere.

2. The constant head device for measuring soil saturation hydraulic conductivity according to claim 1, characterized in that: fine setting subassembly (6) are including putting thing board (61), fine setting support (62), fine setting screw rod (63) and base (64), fine setting screw rod (63) are placed on base (64), fine setting support (62) are fixed put thing board (61) four corners below and establish through the screw thread cover on fine setting screw rod (63), mah-jong bottle (1) is placed put on thing board (61).

3. The constant head device for measuring soil saturation hydraulic conductivity according to claim 2, characterized in that: and a butterfly nut or a plum blossom nut is arranged at the top of the fine adjustment screw (63).

4. The constant head device for measuring soil saturation hydraulic conductivity according to claim 1, characterized in that: each branch pipe (31) is provided with a switch.

5. The constant head device for measuring soil saturation hydraulic conductivity according to claim 1, characterized in that: the liquid level meter (4) is a glass tube with scales, and the highest point of the scales is higher than the bottom of the stainless steel tube (2).