Soil sample sampling device for hydrological frozen soil in cold region

Abstract

The utility model relates to the technical field of frozen soil sampling, in particular to a cold region hydrological frozen soil sampling device which comprises a sampling drilling machine, the bottom of the sampling drilling machine is fixedly connected with a heat preservation water tank, the output end of the sampling drilling machine is located in the center of the inner wall of the heat preservation water tank, and the output end of the sampling drilling machine is fixedly connected with a heat conduction shaft. The sampling device has the advantages that heat conduction liquid on the inner wall of the heat preservation water tank can be heated through the heating pipe, then heat can be exchanged to the heat conduction shaft through the heat conduction fins, and the heat can be conducted to the drill bit connector and the sampling drill barrel through the drill barrel connecting assembly, so that the sampling drill barrel is heated; in this way, the tunneling speed is higher during soil sample drilling, the soil drilling and sampling efficiency is improved, explosion caused by excessive pressure in the heat preservation water tank can be prevented through the pressure reducing valve, heat conduction liquid can be supplemented through the water supplementing pipe, and overheating of the sampling drilling machine caused by conduction of hot water in the heat preservation water tank to the sampling drilling machine can be reduced through the heat insulation layer.

Description

Technical Field

[0001] The utility model relates to the technical field of frozen soil sampling, in particular to a cold region hydrological frozen soil sampling device. Background Art

[0002] During hydrological testing in cold regions, it is necessary to core sample frozen soil. Currently, core sampling is mostly done by drilling with a drill barrel. However, the current drill barrel coring device still has the following problems during use:

[0003] The current cold region hydrological frozen soil sampling device has a simple structure and directly adopts a drill barrel to take samples. However, the soil in the frozen region is hard and it is difficult to drill the drill barrel into it, which affects the efficiency of drilling and sampling. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the present invention is to provide a cold region hydrological frozen soil sampling device to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the present invention provides a cold region hydrological frozen soil sampling device, including a sampling drill, the bottom of the sampling drill is fixedly connected to an insulated water tank, the output end of the sampling drill is located at the center of the inner wall of the insulated water tank, the output end of the sampling drill is fixedly connected to a heat-conducting shaft, the bottom end of the heat-conducting shaft is fixedly connected to a drill barrel connecting assembly, the inner wall of the drill barrel connecting assembly is detachably connected to a drill bit joint, the bottom end of the drill bit joint is fixedly connected to a sampling drill barrel, and the sampling drill barrel The top surface of the heat-conducting shaft fits with the bottom surface of the drill barrel connecting assembly, and a number of heat-conducting fins are fixedly connected to the outer wall of the heat-conducting shaft. The heat-conducting fins are all located inside the insulated water tank. A heating pipe is provided at the bottom of the inner wall of the insulated water tank, and a heating controller is fixedly connected to the bottom of the outer wall of the insulated water tank. The output end of the heating controller is electrically connected to the power input end of the heating pipe. A sealed bearing is fixedly connected to the center of the bottom of the insulated water tank, and the drill barrel connecting assembly passes through the insulated water tank through the sealed bearing and is rotatably connected to the insulated water tank.

[0007] Preferably, any of the above schemes has an insulation layer fixedly connected to the top of the inner wall of the insulated water tank, the insulated water tank is isolated from the sampling drill by the insulation layer, and the output end of the sampling drill is coaxially fixedly connected to the heat-conducting shaft through an insulation coupling.

[0008] The technical effect achieved by adopting the above scheme is: the thermal insulation layer can reduce the conduction of hot water inside the insulated water tank to the sampling drill, causing the sampling drill to overheat; the thermal insulation coupling can isolate heat and reduce heat transfer of the sampling drill output shaft.

[0009] Preferably, any of the above schemes is that a pressure reducing valve is fixedly connected to the top of one side of the insulated water tank, a water supply pipe is fixedly connected to the top of the other side of the insulated water tank, the input end of the water supply pipe is fixedly connected to a water adding valve, and the pressure reducing valve and the water supply pipe are both connected to the interior of the insulated water tank.

[0010] The technical effect achieved by adopting the above scheme is: the pressure reducing valve can prevent the internal pressure of the thermal insulation water tank from being too high and causing explosion, and the water supply pipe can be used to replenish the heat transfer fluid.

[0011] Preferably, from any of the above schemes, the heat-conducting fins, the heat-conducting shaft and the drill barrel connecting assembly are all made of heat-conducting materials, and the diameter of the heat-conducting fins is smaller than the diameter of the inner wall of the thermal insulation water tank.

[0012] The technical effect achieved by adopting the above solution is that the heat exchange effect can be improved by the heat-conducting material, and a gap is left between the heat-conducting fins and the inner wall of the insulated water tank to allow hot water to circulate up and down.

[0013] Preferably, any of the above schemes has a diameter of the sampling drill barrel that matches the diameter of the drill barrel connecting assembly, the top surface of the sampling drill barrel is fitted with the bottom surface of the drill barrel connecting assembly via thermal grease, and operating handles are fixedly connected on both sides of the sampling drill.

[0014] The technical effect achieved by adopting the above scheme is: through the thermal grease, the efficiency of heat transfer from the drill barrel connection component to the sampling drill barrel can be improved, the heating effect of the sampling drill barrel can be improved, and the operating handle can be used to facilitate handheld operation.

[0015] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0016] 1. The cold region hydrological frozen soil sampling device can heat the heat transfer fluid on the inner wall of the insulation water tank through a heating pipe, and then exchange the heat to the heat transfer shaft through a number of heat transfer fins. The heat can be transferred to the drill bit joint and the sampling drill barrel through the drill barrel connection assembly, so that the sampling drill barrel is heated, which makes the excavation speed faster when drilling soil samples and improves the efficiency of soil drilling and sampling.

[0017] 2. The cold region hydrological frozen soil sampling device can prevent the internal pressure of the insulation water tank from being too high and causing an explosion through a pressure reducing valve, replenish the heat transfer fluid through a water supply pipe, and reduce the conduction of hot water inside the insulation water tank to the sampling drill through the thermal insulation layer, causing the sampling drill to overheat. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0020] In the figure: 1-sampling drill, 2-insulated water tank, 3-sampling drill barrel, 4-heating controller, 5-water supply pipe, 6-water filling valve, 7-operating handle, 8-pressure reducing valve, 9-heat conduction shaft, 10-thermal insulation layer, 11-drill barrel connection assembly, 12-drill bit joint, 13-heat conduction fins, 14-heating tube, 15-sealed bearing. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0022] Example 1: Figures 1 to 2 As shown, a cold region hydrological frozen soil sampling device includes a sampling drill 1, the bottom of the sampling drill 1 is fixedly connected to an insulated water tank 2, the output end of the sampling drill 1 is located at the center of the inner wall of the insulated water tank 2, the output end of the sampling drill 1 is fixedly connected to a heat-conducting shaft 9, the bottom end of the heat-conducting shaft 9 is fixedly connected to a drill barrel connecting assembly 11, the inner wall of the drill barrel connecting assembly 11 is detachably connected to a drill bit joint 12, the bottom end of the drill bit joint 12 is fixedly connected to a sampling drill barrel 3, the top surface of the sampling drill barrel 3 is connected to the bottom of the drill barrel connecting assembly 11 The surfaces are fitted together, and a plurality of heat-conducting fins 13 are fixedly connected to the outer wall of the heat-conducting shaft 9. The plurality of heat-conducting fins 13 are all inside the insulated water tank 2. A heating pipe 14 is provided at the bottom of the inner wall of the insulated water tank 2. A heating controller 4 is fixedly connected to the bottom of the outer wall of the insulated water tank 2. The output end of the heating controller 4 is electrically connected to the power input end of the heating pipe 14. A sealed bearing 15 is fixedly connected to the center of the bottom of the insulated water tank 2. The drill barrel connecting assembly 11 passes through the insulated water tank 2 through the sealed bearing 15 and is rotatably connected to the insulated water tank 2.

[0023] As an optional technical solution of the present invention, an insulation layer 10 is fixedly connected to the top of the inner wall of the insulated water tank 2. The insulated water tank 2 is isolated from the sampling drill 1 by the insulation layer 10. The output end of the sampling drill 1 is coaxially fixedly connected to the heat-conducting shaft 9 through an insulation coupling. The insulation layer 10 can reduce the conduction of hot water inside the insulated water tank 2 to the sampling drill 1, causing the sampling drill 1 to overheat. The insulation coupling can isolate heat and reduce heat transfer of the output shaft of the sampling drill 1.

[0024] As an optional technical solution of the present invention, a pressure reducing valve 8 is fixedly connected to the top of one side of the insulated water tank 2, and a water supply pipe 5 is fixedly connected to the top of the other side of the insulated water tank 2. The input end of the water supply pipe 5 is fixedly connected to a water adding valve 6. The pressure reducing valve 8 and the water supply pipe 5 are both connected to the interior of the insulated water tank 2. The pressure reducing valve 8 can prevent the internal pressure of the insulated water tank 2 from being excessive and causing an explosion, and the water supply pipe 5 can be used to replenish the heat transfer fluid.

[0025] As an optional technical solution of the present invention, several heat-conducting fins 13, the heat-conducting shaft 9 and the drill barrel connecting assembly 11 are all made of heat-conducting materials. The diameter of several heat-conducting fins 13 is smaller than the diameter of the inner wall of the insulated water tank 2. The heat-conducting material can improve the heat exchange effect, and a gap is left between the heat-conducting fins 13 and the inner wall of the insulated water tank 2 to allow hot water to circulate up and down.

[0026] As an optional technical solution of the present invention, the diameter of the sampling drill barrel 3 is adapted to the diameter of the drill barrel connecting assembly 11, and the top surface of the sampling drill barrel 3 is fitted with the bottom surface of the drill barrel connecting assembly 11 through thermal grease. Operating handles 7 are fixedly connected on both sides of the sampling drill rig 1. The thermal grease can improve the efficiency of heat conduction from the drill barrel connecting assembly 11 to the sampling drill barrel 3, thereby improving the heating effect of the sampling drill barrel 3, and the operating handle 7 facilitates handheld operation.

[0027] A cold region hydrological frozen soil sampling device, the working principle is as follows:

[0028] 1) The heat transfer fluid on the inner wall of the thermal insulation water tank 2 can be heated by the heating pipe 14;

[0029] 2) Then, heat can be exchanged to the heat-conducting shaft 9 through a plurality of heat-conducting fins 13, and the heat can be conducted to the drill bit joint 12 and the sampling drill barrel 3 through the drill barrel connecting assembly 11, so that the sampling drill barrel 3 is heated, thereby making the excavation speed faster when drilling soil samples and improving the efficiency of soil drilling and sampling.

[0030] To sum up, the cold region hydrological frozen soil sampling device can heat the heat transfer fluid on the inner wall of the insulated water tank 2 through the heating tube 14, and then exchange the heat to the heat transfer shaft 9 through a number of heat transfer fins 13. The heat can be transferred to the drill bit joint 12 and the sampling drill barrel 3 through the drill barrel connecting assembly 11, so that the sampling drill barrel 3 is heated. This makes the excavation speed faster when drilling soil samples and improves the efficiency of soil drilling sampling. The pressure reducing valve 8 can prevent the internal pressure of the insulated water tank 2 from being too high and causing an explosion. The water supply pipe 5 can be used to replenish the heat transfer fluid. The insulation layer 10 can reduce the hot water inside the insulated water tank 2 from being transferred to the sampling drill rig 1, causing the sampling drill rig 1 to overheat.

[0031] Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and should not be construed as limiting the present invention. Those skilled in the art may make changes, modifications, substitutions, and variations to the above embodiments without departing from the principles and purpose of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cold region hydrological frozen soil sampling device, characterized by: The invention comprises a sampling drill (1), wherein the bottom of the sampling drill (1) is fixedly connected to a heat preservation water tank (2), the output end of the sampling drill (1) is located at the center of the inner wall of the heat preservation water tank (2), the output end of the sampling drill (1) is fixedly connected to a heat conduction shaft (9), the bottom end of the heat conduction shaft (9) is fixedly connected to a drill barrel connection assembly (11), the inner wall of the drill barrel connection assembly (11) is detachably connected to a drill head joint (12), the bottom end of the drill head joint (12) is fixedly connected to a sampling drill barrel (3), the top surface of the sampling drill barrel (3) is in contact with the bottom surface of the drill barrel connection assembly (11), and the heat conduction shaft ( 9) is fixedly connected to the outer wall of the heat-insulating water tank (2), and the heat-insulating fins (13) are all located inside the heat-insulating water tank (2). A heating pipe (14) is provided at the bottom of the inner wall of the heat-insulating water tank (2). A heating controller (4) is fixedly connected to the bottom of the outer wall of the heat-insulating water tank (2), and the output end of the heating controller (4) is electrically connected to the power input end of the heating pipe (14). A sealed bearing (15) is fixedly connected to the center of the bottom of the heat-insulating water tank (2), and the drill barrel connecting assembly (11) passes through the heat-insulating water tank (2) through the sealed bearing (15) and is rotatably connected to the heat-insulating water tank (2).

2. The cold region hydrological frozen soil sampling device according to claim 1, characterized in that: A heat insulation layer (10) is fixedly connected to the top of the inner wall of the heat-insulating water tank (2), and the heat-insulating water tank (2) is isolated from the sampling drill (1) by the heat insulation layer (10). The output end of the sampling drill (1) is coaxially fixedly connected to the heat-conducting shaft (9) through a heat-insulating coupling.

3. The cold region hydrological frozen soil sampling device according to claim 2, characterized in that: A pressure reducing valve (8) is fixedly connected to the top of one side of the thermal insulation water tank (2), a water supply pipe (5) is fixedly connected to the top of the other side of the thermal insulation water tank (2), an input end of the water supply pipe (5) is fixedly connected to a water supply valve (6), and both the pressure reducing valve (8) and the water supply pipe (5) are in communication with the interior of the thermal insulation water tank (2).

4. The cold region hydrological frozen soil sampling device according to claim 3, characterized in that: Several of the heat-conducting fins (13), the heat-conducting shaft (9), and the drill pipe connecting assembly (11) are all made of heat-conducting materials, and the diameters of several of the heat-conducting fins (13) are smaller than the diameter of the inner wall of the thermal insulation water tank (2).

5. The cold region hydrological frozen soil sampling device according to claim 4, characterized in that: The diameter of the sampling drill barrel (3) is adapted to the diameter of the drill barrel connecting assembly (11); the top surface of the sampling drill barrel (3) is fitted to the bottom surface of the drill barrel connecting assembly (11) via thermal grease; and operating handles (7) are fixedly connected to both sides of the sampling drill rig (1).

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