Measuring tube heat preservation device for soil water seepage experiment

Abstract

The invention relates to a measuring tube heat preservation device for a soil water seepage experiment, and relates to the technical field of soil tests, the measuring tube heat preservation device comprises a device body, a heat preservation box, a driving assembly, a heating assembly and an isolation assembly; the device body is vertically arranged; the heat preservation box is vertically arranged, and the device body is located in the heat preservation box. A temperature sensor is fixedly arranged in the heat preservation box; a controller is fixedly arranged on the heat preservation box and electrically connected with the temperature sensor. One side of the heat preservation box communicates with an air supply pipe; an air inlet pipe communicates with the air supply pipe and is horizontally arranged on the side, close to the device body, of the air supply pipe. The side, away from the air supply pipe, of the incubator communicates with an air outlet pipe. The driving assembly is located in the heat preservation box. The heating assembly is located in the heat preservation box and used for driving the temperature in the heat preservation box to rise, and the driving assembly is used for driving the heating assembly to move; the isolation assembly is located on the heat preservation box and used for isolating external air from entering the heat preservation box. The method and the device have the effect of improving the accuracy of experimental results.

Description

Technical Field

[0001] This application relates to the technical field of geotechnical testing, and in particular to a heat-insulating device for measuring tubes used in soil permeability testing. Background Technology

[0002] Soil infiltration test reflects the ease with which water flows through the soil and is mainly used in the testing phase of recharge system engineering.

[0003] According to patent publication number CN217586826U, a multi-type soil horizontal permeability coefficient accurate testing system is provided, including a water supply device, a soil sample permeation device, a water head height measuring device, and a seepage flow measuring device. The water supply device includes a support and a pressure-stabilizing water tank that is raised and lowered on the support. The soil sample permeation device includes a seepage channel. The water head height measuring device includes a water head pressure measuring tube. The seepage flow measuring device includes an electronic scale and a measuring cylinder. The water head pressure measuring tube is connected to the seepage channel. The pressure-stabilizing water tank is connected to one end of the seepage channel through a water outlet pipe. The measuring cylinder is connected to the other end of the seepage channel.

[0004] In existing soil infiltration experiments, when the temperature is low in winter, the glass liquid level gauge is exposed to the outside air, and the temperature of the measuring tube is inconsistent with the temperature conditions required for the experiment, which affects the experimental results. Summary of the Invention

[0005] To improve the accuracy of experimental results, this application provides a heat preservation device for measuring tubes used in soil seepage experiments.

[0006] This application provides a heat insulation device for a measuring tube used in soil permeability testing, which adopts the following technical solution: A soil permeability test measuring tube insulation device includes a device body, an insulation box, a driving component, a heating component, and an isolation component. The device body is vertically arranged. The insulation box is vertically arranged, and the device body is located inside the insulation box. A temperature sensor is fixedly installed inside the insulation box to detect the temperature inside the insulation box. A controller is fixedly installed on the insulation box and electrically connected to the temperature sensor. A gas supply pipe is connected to one side of the insulation box to connect to outside air. An air inlet pipe is connected to the gas supply pipe and is horizontally arranged on the side of the gas supply pipe near the device body, located inside the insulation box. An air outlet pipe is connected to the side of the insulation box away from the gas supply pipe. The driving component is located inside the insulation box. The heating component is located inside the insulation box and is used to drive the internal temperature of the insulation box to rise. The driving component is used to drive the heating component to move within the insulation box. The isolation component is located on the insulation box and is used to prevent outside air from entering the insulation box.

[0007] By adopting the above technical solution, during the soil infiltration experiment, the temperature sensor detects the temperature inside the insulated box. When the controller detects that the temperature detected by the temperature sensor is lower than the experimental standard, the controller drives the drive component and the heating component to work. The drive component drives the heating component to move inside the insulated box. The heating component delivers hot air to the inside of the insulated box through the air supply pipe. The isolation component isolates the air inlet pipe, making it difficult for cold air from outside the insulated box to enter. The heated air flows out of the insulated box through the air outlet pipe, creating a flow of hot air inside the insulated box. This avoids the temperature of the measuring tube being too low and improves the accuracy of the experimental results of the measuring tube used in the soil infiltration experiment.

[0008] Optionally, the drive assembly includes a first support plate, a second support plate, a reciprocating screw, a guide rod, and a drive block; the first support plate is vertically disposed inside the insulation box and located on the side of the insulation box near the air outlet pipe, and the first support plate is fixedly connected to the inner bottom wall of the insulation box; a motor is installed on the side of the first support plate near the air outlet pipe, and the motor is electrically connected to the controller; the second support plate is vertically disposed inside the insulation box and located on the side of the insulation box near the air supply pipe, and the second support plate is fixedly connected to the inner bottom wall of the insulation box; the reciprocating screw is horizontally disposed, one end of the reciprocating screw is rotatably connected to the first support plate, and the other end is rotatably connected to the second support plate, and the reciprocating screw is fixedly connected to the output shaft of the motor; the guide rod is horizontally disposed, and both ends are fixedly connected to the first support plate and the second support plate respectively; the drive block is located inside the insulation box and is threadedly connected to the reciprocating screw, the drive block is slidably connected to the guide rod, and the heating assembly is located on the drive block.

[0009] By adopting the above technical solution, when the controller detects that the temperature detected by the temperature sensor is lower than the experimental standard, the controller controls the motor to work. The motor drives the lead screw to rotate, and the guide rod restricts the rotation of the drive block, so that the drive block moves back and forth along the length of the lead screw. The heating component moves back and forth horizontally in the heat preservation box, so that the temperature difference is not easy to be generated in the heat preservation box, thereby making it less likely to generate local overheating in the heat preservation box and improving the heating efficiency of the heating component.

[0010] Optionally, the heating assembly includes a blower, a heater, and a bellows; the blower is fixedly mounted on the top of the drive block and electrically connected to the controller; the heater is fixedly mounted on the top of the drive block and communicates with the air outlet of the blower, and is electrically connected to the controller; the bellows is located inside the insulation box, one end of the bellows is connected to the heater, and the other end is connected to the air supply pipe.

[0011] By adopting the above technical solution, when the controller detects that the temperature detected by the temperature sensor is lower than the experimental standard, the controller controls the blower and heater to work. When the blower is working, the corrugated pipe transports cold air from the outside to the blower's air inlet through the air supply pipe. The blower's air outlet blows air into the heater. The heating wire in the heater generates heat. When the air passes through the heating wire in the heater, heat exchange occurs between the air and the heating wire, causing the air temperature to rise. This allows the heated air to enter the insulation box. After the temperature inside the insulation box rises, the temperature of the measuring tube rises synchronously, ensuring that the temperature of the measuring tube meets the experimental requirements, thereby improving the accuracy of the experimental results of the measuring tube used in the soil infiltration experiment.

[0012] Optionally, the isolation component includes a first isolation part and a second isolation part; the first isolation part is located inside the air inlet pipe and is used to isolate the air inlet pipe; the second isolation part is located on the insulation box and is used to unidirectionally isolate the air outlet pipe; the first isolation part includes a first partition, a limiting plate, a connecting plate, and a spring; the first partition is located inside the air inlet pipe and is rotatably connected to the air inlet pipe; the limiting plate is vertically disposed on the side of the first partition near the air supply pipe and is fixedly connected to the air inlet pipe; the connecting plate is vertically disposed on the side of the first partition away from the air supply pipe and is fixedly connected to the air inlet pipe; the spring is horizontally disposed, and its two ends are fixedly connected to the connecting plate and the first partition respectively, and when the spring is in its natural state, the air in the air supply pipe can flow into the insulation box through the air inlet pipe.

[0013] By adopting the above technical solution, when the temperature detected by the temperature sensor meets the experimental standard, air flows in the insulation box through the inlet and outlet pipes; when the controller detects that the temperature detected by the temperature sensor is lower than the experimental standard, the second isolation component isolates the outlet pipe in one direction, making it difficult for outside air to enter the insulation box through the outlet pipe; when the controller controls the blower to work, the blower draws air from the corrugated pipe, and the inlet and supply pipes supply air to the corrugated pipe. When air is supplied to the corrugated pipe through the inlet pipe, the air drives the first partition to rotate until it is in contact with the side wall of the inlet pipe. At this time, the limiting plate is in contact with the side of the first partition near the supply pipe, making it difficult for the first partition to continue to rotate, thereby isolating the inlet pipe and making it difficult for outside air to enter the insulation box through the inlet pipe. The heated air can flow to the outside of the insulation box through the one-way isolated outlet pipe, so that the heated air flows in the insulation box, making it easier for the temperature inside the insulation box to rise.

[0014] Optionally, the second insulating part includes a second partition, a drive telescopic rod, a first airbag, and a first connecting pipe; the second partition is inclinedly disposed inside the air outlet pipe and rotatably connected to the air outlet pipe; the drive telescopic rod is horizontally disposed inside the air outlet pipe and located on the side of the second partition near the heat preservation box, the fixed end of the drive telescopic rod is fixedly connected to the air outlet pipe, and the rodless cavity of the drive telescopic rod is filled with liquid; a rubber pad is fixedly connected to the movable end of the drive telescopic rod, and the rubber pad abuts against the second partition; the first airbag is fixedly disposed on the side of the first support plate near the second support plate, the first airbag is hollow inside and filled with liquid, the first airbag abuts against the drive block, and the first airbag is in a compressed state; the two ends of the first connecting pipe are respectively connected to the first airbag and the rodless cavity of the drive telescopic rod, and when the second partition is in a vertical state, the fixed end of the drive telescopic rod abuts against the second partition.

[0015] By adopting the above technical solution, when the controller controls the motor to work, the lead screw drives the drive block to move. The drive block slides in the direction away from the motor, the first airbag resets, and the liquid in the rodless cavity of the drive telescopic rod flows into the first airbag through the first connecting pipe. The volume of the rodless cavity of the drive telescopic rod decreases, the movable end of the drive telescopic rod contracts, and the second partition hangs down naturally under the influence of gravity. When the movable end of the drive telescopic rod is fully contracted, the second partition is in a vertical state and abuts against the fixed end of the drive telescopic rod, so that the second partition is unidirectionally isolated. When the outside air flows to the second partition, the second partition is not easy to rotate, thus preventing outside air from entering the insulation box. When the air inside the insulation box needs to flow to the outside of the insulation box, the air pressure inside the insulation box drives the second partition to rotate, making it easier for the air inside the insulation box to flow to the outside of the insulation box through the air outlet pipe, improving the air flow inside the insulation box, and making it easier for the temperature inside the insulation box to rise.

[0016] Optionally, the air supply pipe is provided with an adjustment component, which is used to adjust the air intake of the corrugated pipe; the adjustment component includes an adjustment telescopic plate and a driving part; the adjustment telescopic plate is vertically arranged on the side of the air supply pipe near the corrugated pipe, the movable end of the adjustment telescopic plate is inserted into the air supply pipe, and the movable end of the adjustment telescopic plate is used to adjust the air intake of the corrugated pipe; the driving part is located on the second support plate and is used to drive the movable end of the adjustment telescopic plate to extend.

[0017] By adopting the above technical solution, after the temperature inside the insulation box has been heated for a period of time, the temperature inside the insulation box meets the test requirements. Adjusting the extension of the movable end of the telescopic plate and the isolation of part of the air supply pipe by adjusting the movable end of the telescopic plate reduces the air intake of the blower, thereby making it difficult for the temperature inside the insulation box to rise continuously.

[0018] Optionally, the drive unit includes a second airbag, a second connecting pipe, and a one-way valve; the second airbag is fixedly disposed on the side of the second support plate near the first support plate, the second airbag is hollow inside and filled with liquid, and the plateless cavity of the adjusting telescopic plate is filled with liquid; the two ends of the second connecting pipe are respectively connected to the second airbag and the plateless cavity of the adjusting telescopic plate; the one-way valve is installed on the second connecting pipe.

[0019] By adopting the above technical solution, when the drive block moves close to the second support plate, the drive block squeezes the second air bladder. The liquid in the second air bladder flows through the second connecting pipe and the one-way valve into the plateless cavity of the adjusting telescopic plate. The volume of the plateless cavity of the adjusting telescopic plate increases, and the movable end of the adjusting telescopic plate extends, so that the adjusting telescopic plate isolates part of the air supply pipe, thereby reducing the air intake of the blower.

[0020] Optionally, the adjustment assembly further includes a reset section located on the second connecting pipe and used to drive the second airbag to reset; the reset section includes a return pipe and a solenoid valve; both ends of the return pipe are connected to the second connecting pipe, and the two ends of the return pipe are respectively located on both sides of the one-way valve; the solenoid valve is installed on the return pipe, the solenoid valve is normally closed, and the solenoid valve is electrically connected to the controller.

[0021] By adopting the above technical solution, when the soil infiltration experiment is over, the operator controls the solenoid valve to open through the controller, the second airbag is reset, and the liquid in the plateless cavity of the telescopic plate flows into the second airbag through the second connecting pipe and the return pipe, making the equipment easy to reuse.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By incorporating a heating element, the temperature of the measuring tube is prevented from becoming too low; 2. By configuring the drive components, localized overheating is prevented from occurring inside the insulation box; 3. By setting up an isolation component, when the controller detects that the temperature detected by the temperature sensor is lower than the experimental standard, cold air from the outside is less likely to enter the insulated chamber. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 This is a partial cross-sectional view of an embodiment of this application, intended to show the first insulating portion; Figure 4 This is a partial cross-sectional view of the second partition in this embodiment of the application; Figure 5yes Figure 2 A magnified view of a portion of point A in the middle.

[0024] Explanation of reference numerals in the attached drawings: 1. Device body; 2. Insulation box; 21. Temperature sensor; 22. Controller; 23. Air supply pipe; 231. Air inlet pipe; 24. Air outlet pipe; 25. Box door; 3. Drive assembly; 31. First support plate; 311. Motor; 32. Second support plate; 33. Reciprocating screw; 34. Guide rod; 35. Drive block; 4. Heating assembly; 41. Blower; 42. Heater; 43. Corrugated pipe; 5. Isolation assembly; 51. First isolation section; 511. First partition; 512. Limiting plate; 513. Connecting plate; 514. Spring; 52. Second isolation part; 521. Second partition; 522. Drive telescopic rod; 5221. Rubber pad; 523. First airbag; 524. First connecting pipe; 6. Adjustment assembly; 61. Adjustment telescopic plate; 62. Drive part; 621. Second airbag; 622. Second connecting pipe; 623. One-way valve; 63. Reset part; 631. Return pipe; 632. Solenoid valve. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0026] This application discloses a heat preservation device for a measuring tube used in soil infiltration experiments. (Refer to...) Figure 1 and Figure 2 A soil permeability test measuring tube insulation device includes a device body 1, an insulation box 2, a drive assembly 3, a heating assembly 4, an isolation assembly 5, and an adjustment assembly 6. The device body 1 is vertically arranged, as is the insulation box 2, with the device body 1 located inside the insulation box 2. A temperature sensor 21 is fixedly installed inside the insulation box 2 to detect the temperature inside. A controller 22 is fixedly installed on the insulation box 2 and is electrically connected to the temperature sensor 21. The drive assembly 3 is located inside the insulation box 2, and the heating assembly 4 is also located inside the insulation box 2, driving the heating assembly 4 to move within the insulation box 2. The isolation assembly 5 is located on the insulation box 2 and prevents outside air from entering the insulation box 2. The adjustment assembly 6 is located inside the insulation box 2 and is used to adjust the heating efficiency of the heating assembly 4.

[0027] During the soil infiltration experiment, temperature sensor 21 detects the temperature inside the insulation box 2. When controller 22 detects that the temperature detected by temperature sensor 21 is lower than the experimental standard, controller 22 drives drive component 3 and heating component 4 to work. Drive component 3 drives heating component 4 to move inside the insulation box 2. Heating component 4 delivers hot air to the inside of the insulation box 2. Isolation component 5 prevents outside air from entering the insulation box 2. When heating component 4 has been working for a certain period of time, adjustment component 6 adjusts the heating efficiency of heating component 4.

[0028] The insulated box 2 is rectangular and hollow inside. A horizontal, rectangular air supply pipe 23 connects to one side of the insulated box 2, serving to connect to outside air. An air inlet pipe 231 connects to the air supply pipe 23, horizontally positioned near the main body 1 and also rectangular in shape, located inside the insulated box 2. An air outlet pipe 24 connects to the side of the insulated box 2 furthest from the air supply pipe 23, horizontally positioned at the top of the insulated box 2 and also rectangular in shape. A door 25 is rotatably mounted on the side of the insulated box 2 furthest from the main body 1.

[0029] Reference Figure 2 The drive assembly 3 includes a first support plate 31, a second support plate 32, a reciprocating screw 33, a guide rod 34, and a drive block 35. The first support plate 31 is vertically installed inside the insulation box 2, located on the side of the insulation box 2 near the air outlet pipe 24. The first support plate 31 is rectangular and fixedly connected to the inner bottom wall of the insulation box 2. A motor 311 is installed on the side of the first support plate 31 near the air outlet pipe 24. The motor 311 is horizontally installed and electrically connected to the controller 22. The second support plate 32 is vertically installed inside the insulation box 2, located on the side of the insulation box 2 near the air supply pipe 23. The second support plate 32 is rectangular and fixedly connected to the inner bottom wall of the insulation box 2. The reciprocating screw 33 is horizontally installed. One end of the reciprocating screw 33 is rotatably connected to the first support plate 31, and the other end is rotatably connected to the second support plate 32. The reciprocating screw 33 is fixedly connected to the output shaft of the motor 311, and the reciprocating screw 33 has reciprocating threads. The guide rod 34 is horizontally positioned and is circular in shape. Both ends of the guide rod 34 are fixedly connected to the first support plate 31 and the second support plate 32, respectively. The drive block 35 is located inside the insulation box 2 and is rectangular in shape. The drive block 35 is threadedly connected to the reciprocating screw 33, and the drive block 35 is slidably connected to the guide rod 34 along the length of the guide rod 34.

[0030] The heating assembly 4 includes a blower 41, a heater 42, and a bellows 43. The blower 41 is vertically mounted and fixedly installed at the top of the drive block 35, and is electrically connected to the controller 22. The heater 42 is also vertically mounted and fixedly installed at the top of the drive block 35, with the air outlet of the blower 41 passing through it. The heater 42 is also electrically connected to the controller 22. The bellows 43 is located inside the insulation box 2, with one end connected to the heater 42 and the other end connected to the air supply pipe 23. The bellows 43 is a telescopic pipe.

[0031] When the controller 22 detects that the temperature detected by the temperature sensor 21 is lower than the experimental standard, the controller 22 controls the motor 311, the blower 41 and the heater 42 to work. The motor 311 drives the lead screw to rotate, and the guide rod 34 restricts the rotation of the drive block 35, so that the drive block 35 drives the blower 41 and the heater 42 to move back and forth along the length of the lead screw. The bellows 43 transports cold air from the outside to the air inlet of the blower 41 through the air supply pipe 23. The air outlet pipe 24 of the blower 41 blows the air into the heater 42. The heating wire in the heater 42 generates heat. When the air passes through the heating wire in the heater 42, the air exchanges heat with the heating wire. The heated air enters the insulation box 2.

[0032] Reference Figure 2 and Figure 3 The isolation component 5 includes a first isolation part 51 and a second isolation part 52. The first isolation part 51 is located inside the air inlet pipe 231 and is used to isolate the air inlet pipe 231. The second isolation part 52 is located on the insulation box 2 and is used to unidirectionally isolate the air outlet pipe 24. The first isolation part 51 includes a first partition 511, a limiting plate 512, a connecting plate 513, and a spring 514. The first partition 511 is vertically arranged and is rectangular in shape. The first partition 511 is located inside the air inlet pipe 231 and is rotatably connected to the air inlet pipe 231. The limiting plate 512 is vertically arranged on the side of the first partition 511 near the air supply pipe 23 and is rectangular in shape. The limiting plate 512 is fixedly connected to the air inlet pipe 231.

[0033] A connecting plate 513 is vertically positioned on the side of the first partition 511 away from the air supply pipe 23, and is rectangular in shape. The connecting plate 513 is fixedly connected to the air inlet pipe 231. A spring 514 is horizontally positioned, and its two ends are fixedly connected to the connecting plate 513 and the first partition 511, respectively. When the spring 514 is in its natural state, air in the air supply pipe 23 can flow into the insulation box 2 through the air inlet pipe 231. When the spring 514 is in its stretched state, the first partition 511 is in contact with the side wall of the air inlet pipe 231, and the first partition 511 abuts against the limiting plate 512, thus isolating the air inlet pipe 231.

[0034] Reference Figure 2 and Figure 4The second insulating part 52 includes a second partition 521, a drive telescopic rod 522, a first airbag 523, and a first connecting pipe 524. The second partition 521 is obliquely disposed inside the air outlet pipe 24 and is rectangular in shape, and is rotatably connected to the air outlet pipe 24. The drive telescopic rod 522 is horizontally disposed inside the air outlet pipe 24 and is located on the side of the second partition 521 near the insulated box 2. The fixed end of the drive telescopic rod 522 is fixedly connected to the air outlet pipe 24, and the rodless cavity of the drive telescopic rod 522 is filled with liquid. A rubber pad 5221 is fixedly connected to the movable end of the drive telescopic rod 522. The rubber pad 5221 is rectangular in shape and abuts against the second partition 521.

[0035] The first airbag 523 is vertically positioned and rectangular in shape. The interior of the first airbag 523 is hollow and filled with liquid. The first airbag 523 is fixedly mounted on the side of the first support plate 31 near the second support plate 32 and abuts against the drive block 35. The first airbag 523 is in a compressed state. The first connecting pipe 524 is circular and its two ends are connected to the rodless cavity of the first airbag 523 and the drive telescopic rod 522, respectively. When the first airbag 523 is reset, the second partition plate 521 is in a vertical state, and the fixed end of the drive telescopic rod 522 abuts against the second partition plate 521.

[0036] When the temperature detected by temperature sensor 21 meets the experimental standard, air flows inside the insulation box 2 through air inlet pipe 231 and air outlet pipe 24. When controller 22 detects that the temperature detected by temperature sensor 21 is lower than the experimental standard, controller 22 controls motor 311 and blower 41 to work, the lead screw drives drive block 35 to move, drive block 35 slides away from motor 311, the first airbag 523 resets, the liquid in the rodless chamber of drive telescopic rod 522 flows into the first airbag 523 through the first connecting pipe 524, the volume of the rodless chamber of drive telescopic rod 522 decreases, the movable end of drive telescopic rod 522 retracts, the second partition 521 hangs down naturally under the influence of gravity, when the movable end of drive telescopic rod 522 is fully retracted, the second partition 521 is in a vertical state, the second partition 521 abuts against the fixed end of drive telescopic rod 522, so that the second partition 521 isolates the air outlet pipe 24 in one direction.

[0037] Blower 41 draws air from bellows 43. Inlet pipe 231 and supply pipe 23 supply air to bellows 43. When air is supplied to bellows 43 through inlet pipe 231, the air drives the first partition 511 to rotate until it is in contact with the side wall of inlet pipe 231. At this time, limit plate 512 is in contact with the side of first partition 511 near supply pipe 23, making it difficult for the first partition 511 to continue rotating, thereby isolating inlet pipe 231. The heated air can flow to the outside of insulation box 2 through one-way isolated outlet pipe 24.

[0038] Reference Figure 2 and Figure 5 The adjustment assembly 6 includes an adjustment telescopic plate 61, a drive unit 62, and a reset unit 63. The adjustment telescopic plate 61 is vertically disposed on the side of the air supply pipe 23 near the bellows 43. The movable end of the adjustment telescopic plate 61 is inserted into the air supply pipe 23 and is used to adjust the air intake of the air supply pipe 23. The drive unit 62 is located on the second support plate 32 and is used to drive the movable end of the adjustment telescopic plate 61 to extend. The reset unit 63 is located inside the insulation box 2 and is used to drive the adjustment telescopic plate 61 to reset.

[0039] The drive unit 62 includes a second airbag 621, a second connecting pipe 622, and a one-way valve 623. The second airbag 621 is vertically disposed on the side of the second support plate 32 near the first support plate 31. The second airbag 621 is rectangular box-shaped and hollow inside, filled with liquid. The second airbag 621 is fixedly connected to the second support plate 32. The plateless cavity of the adjusting telescopic plate 61 is filled with liquid. The second connecting pipe 622 is circular and its two ends communicate with the second airbag 621 and the plateless cavity of the adjusting telescopic plate 61, respectively. The one-way valve 623 is mounted on the second connecting pipe 622.

[0040] Reference Figure 5 The reset unit 63 includes a return pipe 631 and a solenoid valve 632. The return pipe 631 is a circular tube, and both ends are connected to the second connecting pipe 622. The two ends of the return pipe 631 are located on both sides of the one-way valve 623. The solenoid valve 632 is installed on the return pipe 631. The solenoid valve 632 is normally closed and is electrically connected to the controller 22.

[0041] When the drive block 35 moves close to the second support plate 32, it compresses the second airbag 621. The liquid inside the second airbag 621 flows through the second connecting pipe 622 and the one-way valve 623 into the plateless cavity of the adjusting telescopic plate 61. The volume of the plateless cavity of the adjusting telescopic plate 61 increases, the movable end of the adjusting telescopic plate 61 extends, and the movable end of the adjusting telescopic plate 61 isolates part of the air supply pipe 23, reducing the air intake of the blower 41. When the soil infiltration experiment ends, the operator controls the solenoid valve 632 to open via the controller 22, the second airbag 621 resets, and the liquid inside the plateless cavity of the adjusting telescopic plate 61 flows back into the second airbag 621 through the second connecting pipe 622 and the return pipe 631.

[0042] The implementation principle of the soil infiltration test measuring tube insulation device in this application embodiment is as follows: During the soil infiltration experiment, temperature sensor 21 detects the temperature inside the insulated box 2. When controller 22 detects that the temperature detected by temperature sensor 21 meets the experimental standard, air flows inside the insulated box 2 through air inlet pipe 231 and air outlet pipe 24. When controller 22 detects that the temperature detected by temperature sensor 21 is lower than the experimental standard, controller 22 controls motor 311, blower 41 and heater 42 to work. Motor 311 drives the lead screw to rotate, causing drive block 35 to drive blower 41 and heater 42 to move away from motor 311. First airbag 523 resets, driving telescopic rod 522 to retract its movable end. Second partition 521 falls naturally due to gravity, and second partition 521 isolates air outlet pipe 24 in one direction.

[0043] Blower 41 draws air from bellows 43. Inlet pipe 231 and supply pipe 23 supply air to bellows 43. When air is supplied to bellows 43 through inlet pipe 231, the air drives the first baffle 511 to isolate inlet pipe 231. Outlet pipe 24 of blower 41 blows air into heater 42. When the air passes through the heating wire in heater 42, heat exchange occurs between the air and the heating wire. The heated air then enters insulation box 2.

[0044] When the drive block 35 moves close to the second support plate 32, it compresses the second airbag 621, causing the movable end of the telescopic plate 61 to extend and partially isolate the air supply pipe 23, thus reducing the air intake of the blower 41. When the soil infiltration experiment ends, the operator controls the solenoid valve 632 to open via the controller 22, the second airbag 621 resets, and the liquid in the cavity of the telescopic plate 61 flows back into the second airbag 621 through the second connecting pipe 622 and the return pipe 631, making the equipment easy to reuse.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A heat-insulating device for a measuring tube used in soil permeability experiments, characterized in that: The device includes a main body (1), an insulation box (2), a drive assembly (3), a heating assembly (4), and an insulation assembly (5); the main body (1) is vertically arranged; the insulation box (2) is vertically arranged, and the main body (1) is located inside the insulation box (2); a temperature sensor (21) is fixedly arranged inside the insulation box (2), and the temperature sensor (21) is used to detect the temperature inside the insulation box (2); a controller (22) is fixedly arranged on the insulation box (2), and the controller (22) is electrically connected to the temperature sensor (21); a gas supply pipe (23) is connected to one side of the insulation box (2), and the gas supply pipe (23) is used to connect to the outside air; an air inlet is connected to the gas supply pipe (23). The inlet pipe (231) is horizontally arranged on the side of the supply pipe (23) near the device body (1), and the inlet pipe (231) is located inside the heat preservation box (2); the side of the heat preservation box (2) away from the supply pipe (23) is connected to the outlet pipe (24); the drive assembly (3) is located inside the heat preservation box (2); the heating assembly (4) is located inside the heat preservation box (2) and is used to drive the internal temperature of the heat preservation box (2) to rise, and the drive assembly (3) is used to drive the heating assembly (4) to move inside the heat preservation box (2); the isolation assembly (5) is located on the heat preservation box (2) and is used to isolate the outside air from entering the heat preservation box (2).

2. The soil permeability test measuring tube insulation device according to claim 1, characterized in that: The drive assembly (3) includes a first support plate (31), a second support plate (32), a reciprocating screw (33), a guide rod (34), and a drive block (35); the first support plate (31) is vertically arranged inside the insulation box (2) and located on the side of the insulation box (2) near the air outlet pipe (24), and the first support plate (31) is fixedly connected to the inner bottom wall of the insulation box (2); a motor (311) is installed on the side of the first support plate (31) near the air outlet pipe (24), and the motor (311) is electrically connected to the controller (22); the second support plate (32) is vertically arranged inside the insulation box (2) and located on the side of the insulation box (2) near the air supply pipe (23), and the first support plate (31) is vertically arranged inside the insulation box (2) and located on the side of the insulation box (2) near the air supply pipe (23), and the second support plate (32 ... The two support plates (32) are fixedly connected to the inner bottom wall of the heat preservation box (2); the reciprocating screw (33) is horizontally arranged, one end of the reciprocating screw (33) is rotatably connected to the first support plate (31), and the other end is rotatably connected to the second support plate (32), and the reciprocating screw (33) is fixedly connected to the output shaft of the motor (311); the guide rod (34) is horizontally arranged, and both ends are fixedly connected to the first support plate (31) and the second support plate (32) respectively; the drive block (35) is located inside the heat preservation box (2) and is threadedly connected to the reciprocating screw (33), the drive block (35) is slidably connected to the guide rod (34), and the heating component (4) is located on the drive block (35).

3. The soil permeability test measuring tube insulation device according to claim 2, characterized in that: The heating assembly (4) includes a blower (41), a heater (42), and a bellows (43); the blower (41) is fixedly installed at the top of the drive block (35), and the blower (41) is electrically connected to the controller (22); the heater (42) is fixedly installed at the top of the drive block (35) and is connected to the air outlet of the blower (41), and the heater (42) is electrically connected to the controller (22); the bellows (43) is located inside the insulation box (2), one end of the bellows (43) is connected to the heater (42), and the other end is connected to the air supply pipe (23).

4. The soil permeability test measuring tube insulation device according to claim 2, characterized in that: The isolation component (5) includes a first isolation part (51) and a second isolation part (52); the first isolation part (51) is located inside the air inlet pipe (231) and is used to isolate the air inlet pipe (231); the second isolation part (52) is located on the heat preservation box (2) and is used to isolate the air outlet pipe (24) in one direction; the first isolation part (51) includes a first partition (511), a limiting plate (512), a connecting plate (513), and a spring (514); the first partition (511) is located inside the air inlet pipe (231) and is rotatably connected to the air inlet pipe (231); the limiting plate (512) The first partition (511) is vertically arranged on the side of the first partition (511) near the air supply pipe (23) and is fixedly connected to the air inlet pipe (231); the connecting plate (513) is vertically arranged on the side of the first partition (511) away from the air supply pipe (23) and is fixedly connected to the air inlet pipe (231); the spring (514) is horizontally arranged and its two ends are fixedly connected to the connecting plate (513) and the first partition (511) respectively. When the spring (514) is in its natural state, the air in the air supply pipe (23) can flow into the heat preservation box (2) through the air inlet pipe (231).

5. The soil permeability test measuring tube insulation device according to claim 4, characterized in that: The second isolation part (52) includes a second partition (521), a drive telescopic rod (522), a first airbag (523), and a first connecting pipe (524); the second partition (521) is inclinedly disposed inside the air outlet pipe (24) and rotatably connected to the air outlet pipe (24); the drive telescopic rod (522) is horizontally disposed inside the air outlet pipe (24) and located on the side of the second partition (521) near the heat preservation box (2); the fixed end of the drive telescopic rod (522) is fixedly connected to the air outlet pipe (24); the rodless cavity of the drive telescopic rod (522) is filled with liquid; a rubber pad (523) is fixedly connected to the movable end of the drive telescopic rod (522). 21), the rubber pad (5221) abuts against the second partition (521); the first airbag (523) is fixedly installed on the side of the first support plate (31) near the second support plate (32), the first airbag (523) is hollow inside and filled with liquid, the first airbag (523) abuts against the drive block (35), and the first airbag (523) is in a compressed state; the two ends of the first connecting pipe (524) are respectively connected to the first airbag (523) and the rodless cavity of the drive telescopic rod (522), and when the second partition (521) is in a vertical state, the fixed end of the drive telescopic rod (522) abuts against the second partition (521).

6. The soil permeability test measuring tube insulation device according to claim 3, characterized in that: An adjustment component (6) is provided on the air supply pipe (23). The adjustment component (6) is used to adjust the air intake of the corrugated pipe (43). The adjustment component (6) includes an adjustment telescopic plate (61) and a drive unit (62). The adjustment telescopic plate (61) is vertically arranged on the side of the air supply pipe (23) near the corrugated pipe (43). The movable end of the adjustment telescopic plate (61) is inserted into the air supply pipe (23). The movable end of the adjustment telescopic plate (61) is used to adjust the air intake of the corrugated pipe (43). The drive unit (62) is located on the second support plate (32) and is used to drive the movable end of the adjustment telescopic plate (61) to extend.

7. The soil permeability test measuring tube insulation device according to claim 6, characterized in that: The drive unit (62) includes a second airbag (621), a second connecting pipe (622), and a one-way valve (623); the second airbag (621) is fixedly disposed on the side of the second support plate (32) near the first support plate (31), the second airbag (621) is hollow inside and filled with liquid, and the plateless cavity of the adjusting telescopic plate (61) is filled with liquid; the two ends of the second connecting pipe (622) are respectively connected to the second airbag (621) and the plateless cavity of the adjusting telescopic plate (61); the one-way valve (623) is installed on the second connecting pipe (622).

8. The soil permeability test measuring tube insulation device according to claim 7, characterized in that: The adjustment assembly (6) further includes a reset part (63), which is located on the second connecting pipe (622) and is used to drive the second airbag (621) to reset; the reset part (63) includes a return pipe (631) and a solenoid valve (632); both ends of the return pipe (631) are connected to the second connecting pipe (622), and both ends of the return pipe (631) are located on both sides of the one-way valve (623); the solenoid valve (632) is installed on the return pipe (631), the solenoid valve (632) is normally closed, and the solenoid valve (632) is electrically connected to the controller (22).

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