CN108732330A - A kind of Unidirectional Freezing soil sample test device - Google Patents

Abstract

The invention provides a one-way frozen soil sample test device, which belongs to the technical field of soil sample tests, and comprises a hollow test box with an open front, and a sample loader assembly for containing frozen soil samples, and a Water storage tank for replenishing frozen soil samples, refrigeration components for simulating freezing and thawing in nature, and control panel for setting the temperature of frozen soil samples and replenishment water flow, the control panel is located outside the test box, and the refrigeration components are located on the sample loader assembly , the water storage tank is connected to the sample loader assembly through a connecting pipe with a flow controller, the refrigeration assembly is connected to the control panel through a first connecting wire, and the flow controller is connected to the control panel through a second connecting wire. The one-way frozen soil sample test device provided by the present invention sets the replenishment flow rate and freezing temperature of the frozen soil sample through the control panel, and realizes the function of truly simulating the water migration of the one-way frozen soil sample in a natural environment, so that the data obtained from the test are accurate .

Description

One-way frozen soil sample test device

technical field

The invention belongs to the technical field of soil sample testing, and more specifically relates to a one-way frozen soil sample testing device.

Background technique

Under natural conditions, affected by atmospheric changes, the surface rock and soil will freeze and thaw more than a hundred times. This impact process belongs to the impact of unidirectional temperature changes on the soil. The one-way freeze-thaw cycle makes the soil structure and properties change greatly, and this change will directly affect the stability of the building foundation and the superstructure. One of the top causes of destruction. During the freezing and thawing process of the soil, the water inside the soil freezes and expands in volume, and migrates to the frozen area; during the melting process, the ice turns into water and redistributes in the soil. The water content and dry density of the sample are redistributed under the action of freezing and thawing, resulting in changes in the structure and uniformity of the sample. With the different times of freezing and thawing cycles, the properties of the soil will change in different ways.

At present, most of the test samples are prepared by putting the soil into the thermal insulation foam, and then putting the thermal insulation foam into the low-temperature freeze-thaw cycle box to simulate the real one-way freezing of the natural soil. This method does not consider water supply and cannot control soil The temperature around the sample cannot truly simulate the one-way freezing phenomenon of natural soil, which makes the experimental data obtained inaccurate.

Contents of the invention

The object of the present invention is to provide a one-way frozen soil sample test device to solve the technical problem of inaccurate experimental data in the one-way frozen soil sample test in the prior art.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a one-way frozen soil sample test device, which includes a hollow test box with an open front, and a container for containing frozen soil samples is arranged in the test box. A sampler assembly, a water storage tank for replenishing water to the frozen soil sample, a refrigeration assembly for simulating the freezing and thawing in nature, and a control panel for setting the temperature of the frozen soil sample and the flow rate of replenishing water, the control panel is located in the On the outside of the test box, the refrigeration assembly is located on the sample loader assembly, the water storage tank is connected to the sample loader assembly through a connecting pipe with a flow controller, and the refrigeration assembly is connected to the sample loader assembly through a first connecting wire. The control panel is connected, and the flow controller is connected to the control panel through a second connecting wire.

Further, a hollow shell with an open front is provided under the test box, a partition is provided between the shell and the test box, and the sample loader assembly and the water storage tank are located at On the baffle; in the casing, there is a circulating water supply area for supplying water to the refrigerating assembly for cooling, and the circulating water supply area is connected to the refrigerating assembly through a water supply pipe passing through the baffle.

Further, the sample loader assembly includes a loader body that is open at both ends for containing the frozen soil sample, a water replenishment assembly located at the bottom of the sample loader body, and a In the hollow insulator, the sample loader body is placed on the water replenishment assembly, the water replenishment assembly is connected to the water storage tank through the connecting pipe, and the water replenishment assembly is located on the partition.

Further, the water supply component includes a mesh tray and a water supply tank, a permeable stone is provided between the bottom of the sample loader body and the tray, the sample loader body is placed in the water supply tank, and the water supply tank passes through The connecting pipe is connected with the water storage tank, and the water replenishment tank is located on the separator.

Further, the outer wall of the incubator is radially provided with several cylindrical protrusions for fixing the tray, and the protruding parts of the tray are respectively sleeved on the several protrusions.

Further, the refrigerating assembly includes a thermostatic controller connected to the control panel and a refrigerating sheet holder with a refrigerating sheet located on the top of the sample loader body, the thermostatic controller and the refrigerating sheet holder pass through The third connecting wire is connected, the thermostatic controller is connected to the control panel through the first connecting wire, and the water supply pipe is connected to the refrigerating plate holder.

Further, the circulating water supply area includes a circulating water tank and a micro-pump located in the circulating water tank, the water supply pipe communicates with the circulating water tank, and the circulating water tank is located on the bottom plate of the housing.

Further, the water supply pipe includes a water inlet pipe and a water outlet pipe, the micro water pump is connected to one end of the water inlet pipe, the water inlet pipe and the water outlet pipe respectively pass through the partition, and the one ends of the water inlet pipe and the water outlet pipe are respectively connected to the The circulating water tank is connected, and the other ends of the water inlet pipe and the water outlet pipe are respectively connected with the refrigerating plate holder.

Further, the water outlet pipe is provided with a cooling water row, and the cooling water row is located on the bottom plate of the housing.

Further, a first sliding door and a second sliding door are respectively provided at the front opening of the test box and the casing, and the left edge of the first sliding door is connected with the left edge of the opening of the test box. It is connected by a hinge shaft, and a first handle is provided on the outside of the first sliding door, the left edge of the second sliding door is connected to the left edge of the housing opening by a hinge shaft, and the first handle There is a second handle on the outside of the door.

The beneficial effects of the one-way frozen soil sample test device provided by the present invention are: compared with the prior art, the one-way frozen soil sample test device provided by the present invention can set the replenishment flow rate and freezing rate of the frozen soil sample through the control panel. Temperature, to realize the function of truly simulating the water migration of one-way frozen soil samples in the natural environment, so that the data obtained from the test are accurate.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the descriptions of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only of the present invention. For some embodiments, those of ordinary skill in the art can also obtain other drawings based on these drawings without paying creative efforts.

Fig. 1 is the structural representation of the one-way frozen soil sample test device provided by the embodiment of the present invention;

Figure 2 is a schematic diagram of the connection relationship between the sample loader assembly, the refrigeration assembly and the control panel;

Fig. 3 is a schematic diagram of a circulating water supply area;

Fig. 4 is a schematic diagram of the sample loader body;

Fig. 5 is a schematic diagram of the connection between the incubator and the tray;

Wherein, each reference sign in the figure:

1. Test box; 2. Shell; 3. Circulating water supply area; 31. Circulating water tank; 32. Micro water pump; 4. Partition; 5. Water supply pipe; 51. Inlet pipe; 52. Outlet pipe; 6. Sample loader assembly; 61. Sample loader body; 62. Tray; 63. Incubator; 64. Water supply tank; 65. Permeable stone; 7. Water storage tank; 8. Refrigeration component; 81. Constant temperature controller; 82. Refrigeration 83. Refrigerating plate holder; 84. The third connecting wire; 9. Connecting pipe; 10. Control panel; 11. The first connecting wire; 12. The second connecting wire; 13. Flow controller; 14. Protrusion ;15. Cooling water row; 16. Cooling fan; 17. The first sliding door; 18. The first handle; 19. The second sliding door; 20. The second handle; 21. Frozen soil samples; 22. Cooling holes; 23 , fastening ring; 24, disc handle.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

It should be noted that when an element is referred to as being “fixed” or “disposed on” another element, it may be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

It is to be understood that the terms "length", "width", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must have a certain orientation, be constructed and operate in a certain orientation, and thus should not be construed as limiting the invention.

In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" and "several" mean two or more, unless otherwise specifically defined.

Please refer to Fig. 1 to Fig. 5 together, and now the unidirectional frozen soil sample test device provided by the present invention will be described. The one-way frozen soil sample test device comprises a hollow test box 1 with an open front, and the test box 1 is provided with a sample loader assembly 6 for containing the frozen soil sample 21, and is used for feeding the frozen soil sample 21 to the frozen soil sample. A water storage tank 7 for replenishing water to the soil sample 21, a refrigeration assembly 8 for simulating freezing and thawing in nature, and a control panel 10 for setting the temperature of the frozen soil sample 21 and the flow rate of replenishing water, the control panel 10 is located in the test chamber 1 Outside, the refrigeration assembly 8 is located on the sample loader assembly 6, the water storage tank 7 is connected to the sample loader assembly 6 through a connecting pipe 9 with a flow controller 13, and the refrigeration assembly 8 is connected to the sample loader assembly 6 through the first A connection wire 11 is connected to the control panel 10 , and the flow controller 13 is connected to the control panel 10 through a second connection wire 12 .

The beneficial effects of the one-way frozen soil sample test device provided by the present invention are: compared with the prior art, the one-way frozen soil sample test device provided by the present invention can set the replenishment flow rate and freezing rate of the frozen soil sample through the control panel. Temperature, to realize the function of truly simulating the water migration of one-way frozen soil samples in the natural environment, so that the data obtained from the test are accurate. In the present invention, the control panel is provided with a temperature control button, a water supply flow control button, a temperature display screen, and a water flow display screen. The current temperature and water flow conditions can be clearly displayed from the control panel. The structure is reasonable, easy to use, and simple to operate. The attached water supply device makes up for the deficiency of the existing experimental parts, and fully considers the influence of moisture migration.

As a further optimization, please refer to Fig. 1 and Fig. 3, a hollow shell 2 with an open front is also provided under the test box 1, and a The partition 4, the sample loader assembly 6 and the water storage tank 7 are all located on the partition 4; the housing 2 is provided with a circulating water supply area 3 for supplying water to the refrigeration assembly 8 for cooling, so The circulating water supply area 3 is connected with the cooling assembly 8 through the water supply pipe 5 passing through the partition plate 4 .

In the present invention, the circulating water supply area 3 supplies water to the refrigeration assembly 8 through the water supply pipe 5, thereby achieving the purpose of further cooling the refrigeration assembly 8; the circulating water supply area 3 can reuse the water in it, saving resources and improving the utilization rate of water resources .

As a further optimization, please refer to FIG. 1 and FIG. 2, the sample loader assembly 6 includes a sample loader body 61 open at both ends for containing the frozen soil sample 21, located at the bottom of the sample loader body 61 The water replenishment assembly and the hollow insulator 63 arranged on the periphery of the sample loader body 61, the sample loader body 61 is placed on the water replenishment assembly, and the water replenishment assembly is connected to the water storage tank through the connecting pipe 9 7, and the water supply assembly is located on the partition 4.

In the present invention, the sample loader body 61 is made of plexiglass. The frozen soil sample 21 is contained in the sample container body 61. The lower part of the frozen soil sample 21 is a permeable stone 65. The mesh circular plastic tray 62 is placed in the center of the bottom of the water supply tank 64. The permeable stone 65 is fully in contact with the tray 62, and the water inlet of the replenishment tank 64 is located at the bottom, so that the water inlet and the permeable stone 65 are basically on the same plane, so that the internal and external pressure differences are consistent. When the water flow reaches a certain level, the gate can be closed, and the water surface is just right. It is half of the height of the permeable stone 65.

As a further optimization, please refer to Fig. 1 and Fig. 2, the described water replenishment assembly includes a mesh tray 62 and a water replenishment tank 64, a permeable stone 65 is arranged between the bottom of the sample loader body 61 and the tray 62, and the sample loader The device body 61 is placed in the water supply tank 64 , the water supply tank 64 is connected to the water storage tank 7 through the connecting pipe 9 , and the water supply tank 64 is located on the partition plate 4 .

In the present invention, the upper part of the incubator 63 is provided with a disc handle 24, and its upper part and the disc handle are of an integrated structure. The incubator 63 is divided into three petals, and the inner wall of each petal is a circular arc adapted to the sample loader body 61. The outer wall is in the shape of a circular arc with small ends and a large middle. When the three petals are assembled, the central part will form a cylinder in the shape of a sample loader body 61. The sample loader body 61 is of the same height as the incubator 63; 61 is assembled with one flap of the incubator 63, so that the outer wall of the sample loader body 61 fits the inner arc, and then the second flap is spliced with the first flap, and at the same time, the inside of the second flap is connected to the outer wall of the sample loader body 6 Fitting, finally put the third petal into the gap between the second petal and the first petal. After assembling, put a fastening ring 23 on the outer periphery of the middle part of the insulator 63, and the three petals are toothed. Yes, the incubator 63 can also prevent the sample loader body 61 from being damaged.

As a further optimization, please refer to Fig. 5, the outer wall of the insulator 63 is radially provided with several cylindrical protrusions 14 for fixing the tray 62, and the protruding parts of the tray 62 are respectively sleeved on several of the protrusions. Up to 14.

In the present invention, the extended part of the tray 62 is provided with four tentacles that cooperate with the four protrusions 14, and each antenna has an iron hook, and the iron hook hooks the protrusions 14 so as to connect the tray 62 and the sample loader body 61 In this way, the permeable stone 65 is tightly attached to the frozen soil sample 21.

As a further optimization, please refer to FIG. 1 and FIG. 2 , the refrigerating assembly 8 includes a thermostatic controller 81 connected to the control panel 10 and a refrigerating sheet fixed with a refrigerating sheet 82 located on the top of the sample loader body 61 . device 83, the thermostat controller 81 is connected to the refrigerating plate holder 83 through a third connection wire 84, the thermostat controller 81 is connected to the control panel 10 through the first connection wire 11, and the water replenishment The tube 5 is connected to the refrigerating sheet holder 83 .

In the present invention, the refrigerating sheet 82 is a multi-stage semiconductor refrigerating chip, which is arranged at the lower part of the refrigerating sheet holder 83. The refrigerating sheet holder 83 is hollow, and the water flow channel in the cavity is M-shaped. There is a constant temperature controller 81 under the cooling sheet 82. The stretched strain gauges are used to control the temperature of the cooling plate 82. The cooling plate 82 and the cooling plate holder 83 are placed on the disc handle 24 on the sample loader body 61 together, so that the frozen soil sample 21 simulates the temperature of the natural environment. In the freezing mode from top to bottom; the chip is connected to the cooling chip holder 83 through thermal conductive silicone grease, and the cooling chip holder 83 is respectively provided with a water inlet hole and a water outlet hole, and the water supply pipe 5 is connected with the water inlet hole and the water outlet hole respectively. The outlet holes are connected.

As a further optimization, please refer to FIG. 3 , the circulating water supply area 3 includes a circulating water tank 31 and a micro-pump 32 located in the circulating water tank 31, the water supply pipe 5 communicates with the circulating water tank 31, so The circulating water tank 31 is located on the bottom plate of the housing 2 .

Among the present invention, the micro water pump 32 provides a power source, so that the water in the circulating water tank 31 enters the cooling plate holder 83, and the circulating water tank 31 is respectively provided with a water inlet hole and a water outlet hole, which are connected with the cooling plate holder 83. The water inlet hole and the water outlet hole are used together.

As a further optimization, please refer to Fig. 2 and Fig. 3, the water supply pipe 5 includes a water inlet pipe 51 and a water outlet pipe 52, the micro water pump 32 is connected to one end of the water inlet pipe 51, and the water inlet pipe 51 and the water outlet pipe 52 Respectively through the partition 4, one end of the water inlet pipe 51 and the water outlet pipe 52 are respectively connected to the circulating water tank 31, and the other ends of the water inlet pipe 51 and the water outlet pipe 52 are respectively connected to the refrigerating plate holder 83 .

In the present invention, one end of the water inlet pipe 51 is connected to the outlet of the miniature water pump 32, passes through the water outlet hole, and the other end communicates with the water inlet hole of the refrigerating plate holder 83, and one end of the water outlet pipe 52 communicates with the water inlet hole on the circulating water tank 31, and the other end It is communicated with the inlet and outlet holes of the refrigerating plate holder 83; the water inlet pipe 51 and the water outlet pipe 52 form a water cycle, and the difference is that the water temperature in the water inlet pipe 51 is lower than the water temperature in the water outlet pipe 52.

As a further optimization, please refer to FIG. 3 , the water outlet pipe 52 is provided with a cooling water row 15 , and the cooling water row 15 is located on the bottom plate of the housing 2 .

In the present invention, the heat dissipation water row 15 is equivalent to separating the outlet pipe 52 into two halves. There are two interfaces on the heat dissipation water row 15, which are connected to the two interfaces at the disconnection of the outlet pipe 52 respectively. The water row 15 is provided with a heat dissipation fan 16, and the heat dissipation fan 16 is fixed above the heat dissipation water row 15 by bolts, so that the water temperature of the water flowing back into the circulating water tank 31 is restored to the initial temperature.

As a further optimization, please refer to Fig. 1, the first sliding door 17 and the second sliding door 19 are respectively provided at the front openings of the test chamber 1 and the casing 2, and the left edge of the first sliding door 17 is part is connected with the open left edge of the test box 1 through a hinge shaft, and a first handle 18 is provided on the outside of the first sliding door 17, and the left edge of the second sliding door 19 is connected with the casing 2. The left edge of the opening is connected by a hinge shaft, and a second handle 20 is provided on the outside of the first sliding door 19 .

In the present invention, both the second sliding door 19 and the second handle 20 have a locking function; the front walls of the test box 1 and the housing 2 are respectively provided with cooling holes 22 .

work process:

First, ensure that the components in the test box 1 and the shell 2 are connected normally; secondly, open the first sliding door 17 and the second sliding door 19 respectively, take out the water storage tank 7 and the circulating water tank 31, add an appropriate amount of water and put them back In situ, close the first sliding door 17 and the second sliding door 19 and lock them through the first handle 18 and the second handle 20; again, set the laboratory temperature control button and the water supply flow control button on the control panel 10 The temperature and water flow are only required, and the test status can be observed in real time from the temperature display and water flow display on the control panel.

Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. a kind of Unidirectional Freezing soil sample test device includes the hollow experiment casing (1) of front opening, which is characterized in that described It is equipped in experiment casing (1) and freezes the sample charging device component (6) of soil sample (21), for being mended to the soil sample (21) of freezing for containing The aqua storage tank (7) of water, the cooling assembly (8) for simulating nature freeze thawing and described freeze soil sample (21) temperature for being arranged With the control panel (10) of refill flow, the control panel (10) is located on the outside of the experiment casing (1), the cooling assembly (8) it is located on the sample charging device component (6), the aqua storage tank (7) is by carrying connecting tube (9) and the institute of flow controller (13) Sample charging device component (6) connection is stated, the cooling assembly (8) is connected by the first connecting wire (11) and the control panel (10) It connects, the flow controller (13) is connect by the second connecting wire (12) with the control panel (10).

2. Unidirectional Freezing soil sample test device according to claim 1, which is characterized in that below the experiment casing (1) It is additionally provided with the hollow housing (2) of front opening, partition board (4) is equipped between the shell (2) and the experiment casing (1), it is described Sample charging device component (6) and aqua storage tank (7) are respectively positioned on the partition board (4)；It is equipped in the shell (2) for the refrigeration train The periodical feeding area (3) that part (8) supplies water for cooling, the periodical feeding area (3) is by running through the water supply pipes of the partition board (4) (5) it is connected with the cooling assembly (8).

3. Unidirectional Freezing soil sample test device according to claim 2, which is characterized in that sample charging device component (6) packet It includes for containing the sample charging device ontology (61) for freezing soil sample (21) open at both ends, being located at sample charging device ontology (61) bottom Moisturizing component and be set to the hollow insulation device (63) of sample charging device ontology (61) periphery, the sample charging device ontology (61) It is positioned on the moisturizing component, the moisturizing component is connect by the connecting tube (9) with the aqua storage tank (7), the benefit Water assembly is located on the partition board (4).

4. Unidirectional Freezing soil sample test device according to claim 3, which is characterized in that the moisturizing component includes netted Pallet (62) and moisturizing slot (64) are equipped with permeable stone (65) between sample charging device ontology (61) bottom and pallet (62), described Sample charging device ontology (61) is positioned in the moisturizing slot (64), and the moisturizing slot (64) passes through the connecting tube (9) and the storage Sink (7) connects, and the moisturizing slot (64) is located on the partition board (4).

5. Unidirectional Freezing soil sample test device according to claim 4, which is characterized in that warmer (63) the outer wall diameter To equipped with several cylindrical protrusions (14) for fixing the pallet (62), the pallet (62) is if extension is respectively fitted over On dry raised (14).

6. Unidirectional Freezing soil sample test device according to claim 3, which is characterized in that the cooling assembly (8) includes The thermostatic controller (81) that is connect with the control panel (10) and it is located at the sample charging device ontology (61) with cooling piece (82) The cooling piece fixator (83) at top, the thermostatic controller (81) are connect by third with the cooling piece fixator (83) and are led Line (84) connects, and the thermostatic controller (81) is connect by first connecting wire (11) with the control panel (10), The water supply pipe (5) connect with the cooling piece fixator (83).

7. Unidirectional Freezing soil sample test device according to claim 6, which is characterized in that periodical feeding area (3) packet Include recirculated water sink (31) and the micro pump (32) in the recirculated water sink (31), the water supply pipe (5) with it is described Recirculated water sink (31) is connected to, and the recirculated water sink (31) is located on the bottom plate of the shell (2).

8. Unidirectional Freezing soil sample test device according to claim 7, which is characterized in that the water supply pipe (5) include into Water pipe (51) and outlet pipe (52), the micro pump (32) connect with the water inlet pipe (51) one end, the water inlet pipe (51) Extend through the partition board (4) with outlet pipe (52), the water inlet pipe (51) and outlet pipe (52) one end respectively with the cycle Water sink (31) connects, and the water inlet pipe (51) and outlet pipe (52) other end state cooling piece fixator (83) even with described respectively It connects.

9. Unidirectional Freezing soil sample test device according to claim 8, which is characterized in that the outlet pipe (52) is equipped with Water of radiation arranges (15), and the water of radiation row (15) is located on the bottom plate of the shell (2).

10. according to claim 1-9 any one of them Unidirectional Freezing soil sample test devices, which is characterized in that the chamber Body (1) and shell (2) front open-mouth are respectively equipped with the first sliding door (17) and the second sliding door (19), and first sliding door (17) is left Lateral edge portion is with the open left side edge of the experiment casing (1) by being equipped on the outside of stud connection and first sliding door (17) First knob (18), the open left side edge of the second sliding door (19) left side edge and the shell (2) by stud connection, And it is equipped with the second knob (20) on the outside of first sliding door (19).