CN215004867U

CN215004867U - Outdoor permeameter

Info

Publication number: CN215004867U
Application number: CN202120103954.0U
Authority: CN
Inventors: 黄达
Original assignee: Lincang Water Resources And Hydropower Survey Design And Research Institute
Current assignee: Lincang Water Resources And Hydropower Survey Design And Research Institute
Priority date: 2021-01-14
Filing date: 2021-01-14
Publication date: 2021-12-03
Anticipated expiration: 2031-01-14

Abstract

The utility model belongs to the technical field of soil detection equipment, especially, be an outdoor permeameter, including permeameter main part, cutting ring, siphon, protective sheath and litter, the bottom threaded connection of permeameter main part has the cutting ring, the inboard slip of permeameter main part is provided with the litter, the top threaded connection of permeameter main part has the protective sheath, the top of litter runs through the protective sheath and extends to the outside of protective sheath, the excircle welding of permeameter main part top has the siphon, the siphon is linked together with the inner chamber of permeameter main part, the excircle of permeameter main part is located one side of siphon and is provided with the observation window, the observation window is covered and is provided with transparent resin plate, the bilateral symmetry of observation window is provided with the scale mark; has the characteristics of convenient use and simple structure, and is convenient to carry, observe and operate.

Description

Outdoor permeameter

Technical Field

The utility model belongs to the technical field of soil detection equipment, concretely relates to outdoor permeameter.

Background

The soil permeameter can measure the permeability test of sand soil and non-coagulability soil containing a small amount of gravels under a constant water head, the existing soil permeameter mainly comprises an upper cover, a base, a sleeve seat, a screw rod and a water inlet pipe, the upper cover is fixed on the base, the upper cover is provided with a water inlet hole, the base is provided with a water outlet hole, the sleeve seat comprises a cross beam and a vertical rod which are mutually and vertically connected, and the vertical rod is fixed on the base; the screw rod is connected on the crossbeam of cover seat, and the screw rod bottom pushes up on the upper cover, and the inlet tube is connected with the inlet opening of upper cover. Above-mentioned soil permeameter during operation places the soil sample in the base, and in the base was injected with water through the water pressure of inlet tube, rivers flowed from the apopore behind the soil sample, and the relation between the water pressure through flow and inlet tube reachs soil permeability. The operation is complicated, and such test mode is only applicable to the laboratory, and to the test of outdoor reservoir core, then not applicable, can't be according to the actual conditions on scene to the permeability of convenient test reservoir core.

In order to solve the problems, the application provides an outdoor permeameter.

SUMMERY OF THE UTILITY MODEL

To solve the problems set forth in the background art described above. The utility model provides an outdoor permeameter has convenient to use, easy operation's characteristics.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an outdoor permeameter, includes permeameter main part, cutting ring, siphon, protective sheath and litter, the bottom threaded connection of permeameter main part has the cutting ring, the inboard of permeameter main part slides and is provided with the litter, the top threaded connection of permeameter main part has the protective sheath, the top of litter is run through the protective sheath extends to the outside of protective sheath, the welding of permeameter main part top excircle has the siphon, the siphon with the inner chamber of permeameter main part is linked together, the excircle of permeameter main part just is located one side of siphon is provided with the observation window, it is provided with transparent resin plate to cover on the observation window, the bilateral symmetry of observation window is provided with the scale mark.

As the utility model relates to an outdoor permeameter is preferred, the siphon is the copper pipe, just the siphon is the arc structure, just the diameter of siphon is 6 ~ 10 mm.

As the utility model relates to an outdoor permeameter is preferred, the internal thread has all been seted up with the bottom inside wall in permeameter main part top, the bottom excircle of protective sheath with the top excircle of cutting ring all is provided with the external screw thread, the permeameter main part with the protective sheath reaches the cutting ring is formed by the galvanized pipe preparation.

As the utility model relates to an outdoor permeameter is preferred, the top intermediate position of protective sheath is provided with the uide bushing, the uide bushing with the top sliding fit of litter.

As the utility model relates to an outdoor infiltration appearance is preferred, including setting up of litter the inboard head that floats of infiltration appearance main part, the top intermediate position of floating the head is provided with the guide bar, the excircle of guide bar with sliding fit between the uide bushing inner wall, the top excircle of floating the head is provided with the central line.

As the utility model relates to an outdoor permeameter is preferred, the bottom of cutting ring is provided with annular blade.

Compared with the prior art, the beneficial effects of the utility model are that: through adopting split type structural design, and then can choose for use suitable spare part according to the incident condition on scene when using outdoors to constitute and have corresponding outdoor permeameter, accomplish the soil permeability of pertinence and detect, have convenient to use, simple structure's characteristics conveniently carry simultaneously, the observation easy operation of being convenient for.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of FIG. 1;

FIG. 3 is a schematic half-sectional view of the middle cutting ring of the present invention;

in the figure: 1. a permeameter body; 2. cutting with a ring cutter; 201. an annular cutting edge; 3. a siphon tube; 4. a protective sleeve; 5. a slide rod; 501. floating head; 502. a guide bar; 503. a midline; 6. an observation window; 7. a transparent resin plate; 8. scale lines; 9. an internal thread; 10. an external thread; 11. and a guide sleeve.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-3, an outdoor permeameter, including permeameter main part 1, cutting ring 2, siphon 3, protective sheath 4 and litter 5, the bottom threaded connection of permeameter main part 1 has the cutting ring 2, the inboard slip of permeameter main part 1 is provided with litter 5, the top threaded connection of permeameter main part 1 has protective sheath 4, the top of litter 5 runs through protective sheath 4 and extends to the outside of

protective sheath

4, 1 top excircle welding of permeameter main part has siphon 3, siphon 3 with the inner chamber of permeameter main part 1 is linked together, the excircle of permeameter main part 1 just is located one side of siphon 3 is provided with observation window 6, it is provided with transparent resin board 7 to cover on observation window 6, the bilateral symmetry of observation window 6 is provided with scale mark 8.

Through adopting split type structural design, and then can choose for use suitable spare part according to the incident condition on scene when using outdoors to constitute and have corresponding outdoor permeameter, accomplish the soil permeability of pertinence and detect, have convenient to use, simple structure's characteristics conveniently carry simultaneously, the observation easy operation of being convenient for.

In an optional embodiment, the siphon tube 3 is a copper tube, the siphon tube 3 is an arc-shaped structure, and the diameter of the siphon tube 3 is 6-10 mm.

In an optional embodiment, the permeameter main body 1 is provided with internal threads 9 on the top and bottom inner side walls, the bottom outer circle of the protective sleeve 4 and the top outer circle of the cutting ring 2 are provided with external threads 10, and the permeameter main body 1, the protective sleeve 4 and the cutting ring 2 are all made of galvanized pipes.

In this embodiment: the installation of the outdoor permeameter can be completed by matching the external thread 10 with the internal thread 9, thereby being convenient to carry and convenient and practical to operate.

In an alternative embodiment, a guiding sleeve 11 is arranged at the middle position of the top end of the protecting sleeve 4, and the guiding sleeve 11 is in sliding fit with the top of the slide rod 5.

In this embodiment: the guide sleeve 11 is matched with the slide rod 5, so that the guide and limiting effects are achieved.

In an optional embodiment, the slide rod 5 comprises a floating head 501 arranged inside the permeameter main body 1, a guide rod 502 is arranged at a middle position of a top end of the floating head 501, an outer circle of the guide rod 502 is in sliding fit with an inner side wall of the guide sleeve 11, and a central line 503 is arranged at an outer circle of the top of the floating head 501.

In this embodiment: the central line 503 is arranged on the outer circle of the floating head 501 and is matched with the scale mark 8 for use, so that the change condition of the water head in unit time can be conveniently recorded and observed by a detector in real time.

In an alternative embodiment, the bottom end of the cutting ring 2 is provided with an annular cutting edge 201.

In this embodiment: the outdoor permeameter can be conveniently inserted into the soil to be tested by additionally arranging the annular cutting edge 201, and meanwhile, the sealing performance is improved.

The utility model discloses a theory of operation and use flow: in practical use, firstly, the slide rod 5 is installed inside the permeameter main body 1, then the external thread 10 is matched with the internal thread 9, the cutting ring 2 is installed at the bottom end of the permeameter main body 1, the protective sleeve 4 is installed at the top end of the permeameter main body 1 in the same way, the guide rod 502 penetrates through the guide sleeve 11, then the cutting ring 2 is inserted into a specified position on the core wall of the reservoir, then the conversion rate of the central line 503 on the floating head 501 relative to the scale line 8 in unit time is observed through the observation window 6 according to the change of the water head, and the conversion rate is determined according to V ═ K.I (centimeter per second) hL;

in the formula:

v: the permeation rate;

i: water pressure gradient, i.e. the water pressure drop per unit distance in the osmotic layer;

k: permeability coefficient, flow rate per unit cross-sectional area per unit time (ml/min or hr) at a unit water pressure gradient (I ═ 1);

h: the water head difference (centimeter) of the soil column is the hydrostatic pressure;

l: the thickness (cm) of the soil layer where the water penetration occurs is the penetration path;

that is, the amount of water Q permeating through a certain cross-sectional area a (square centimeter) within time t can be expressed by the following equation, Q ═ V · a · t ═ K · I · a · t, and hence the permeability coefficient K ═ AItII (square centimeter per minute or hour), and the soil permeability coefficient can be measured.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An outdoor permeameter, its characterized in that: comprises a permeameter main body (1), a cutting ring (2), a siphon (3), a protective sleeve (4) and a sliding rod (5), wherein the bottom end of the permeameter main body (1) is connected with the cutting ring (2) in a threaded manner, the inner side of the permeameter main body (1) is provided with the sliding rod (5) in a sliding manner, the top end of the permeameter main body (1) is connected with the protective sleeve (4) in a threaded manner, the top of the sliding rod (5) penetrates through the protective sleeve (4) and extends to the outside of the protective sleeve (4), the siphon (3) is welded on the excircle of the top of the permeameter main body (1), the siphon (3) is communicated with the inner cavity of the permeameter main body (1), an observation window (6) is arranged on the excircle of the permeameter main body (1) and on one side of the siphon (3), a transparent resin plate (7) is covered on the observation window (6), and scale marks (8) are symmetrically arranged on two sides of the observation window (6).

2. An outdoor permeameter according to claim 1, wherein: siphon (3) are the copper pipe, just siphon (3) are the arc structure, just the diameter of siphon (3) is 6 ~ 10 mm.

3. An outdoor permeameter according to claim 1, wherein: internal thread (9) have all been seted up with the bottom inside wall in infiltration appearance main part (1) top, the bottom excircle of protective sheath (4) with the top excircle of cutting ring (2) all is provided with external screw thread (10), infiltration appearance main part (1) with protective sheath (4) reach cutting ring (2) are formed by the galvanized pipe preparation.

4. An outdoor permeameter according to claim 3, wherein: the top middle position of protective sheath (4) is provided with uide bushing (11), uide bushing (11) with the top sliding fit of litter (5).

5. An outdoor permeameter according to claim 4, wherein: what litter (5) set up permeate appearance main part (1) inboard floats head (501), the top intermediate position that floats head (501) is provided with guide bar (502), the excircle of guide bar (502) with sliding fit between uide bushing (11) inside wall, the top excircle of floating head (501) is provided with central line (503).

6. An outdoor permeameter according to claim 1, wherein: the bottom end of the cutting ring (2) is provided with an annular cutting edge (201).