Efficient rock-soil body specific heat capacity measuring device

Abstract

The utility model provides an efficient rock-soil body specific heat capacity measuring device, which comprises a measuring box, a water injection pump system and a computer control and display system, the measuring box comprises a water tank at the upper part and a reaction box at the lower part, the water injection pump system injects water into the water tank through a water injection opening formed in the side wall of the water tank, and temperature probes in different directions are arranged in the water tank; a partition plate internally provided with a plurality of permeable channels is arranged at the lower part of the water tank, a plurality of reaction single cylinders for heating control are arranged in the reaction box, the bottoms of the reaction single cylinders are fixedly connected with an electric rotating base arranged in a reaction box base, single cylinder temperature probes are arranged in the reaction single cylinders, and the water tank and the reaction box are connected into a whole through buckles. The permeable channels are in one-to-one correspondence with the reaction single cylinders, and water in the water tank enters the reaction single cylinders in the reaction box through the permeable channels. The device has the advantages of simplicity, high efficiency, convenience in operation, high measurement precision and capability of testing a plurality of samples at a time and directly forming a contrast test.

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical engineering measurement, in particular to a high-efficiency geotechnical body specific heat capacity measuring device. Background Art

[0002] The specific heat capacity of geotechnical materials is a crucial thermal parameter in fields such as geological engineering, geothermal utilization, and geotechnical engineering. Specific heat capacity describes the amount of heat required to raise a unit temperature per unit mass of a material. It directly influences geotechnical properties such as thermal conductivity, heat storage, and thermal response. Therefore, accurately measuring the specific heat capacity of geotechnical materials is crucial for understanding their thermophysical properties, assessing their potential for geothermal utilization, and predicting their thermal behavior under various engineering conditions.

[0003] Currently, most common geotechnical heat capacity measurement devices on the market use the cooling mixing method. The basic principle is to mix the geotechnical material to be measured with water or other media, measure the temperature change before and after mixing, and then calculate the specific heat capacity of the geotechnical material based on the principle of conservation of energy. However, this method has several limitations: First, since the geotechnical material to be measured needs to be transferred from a constant temperature environment to a mixing container during the mixing process, the inevitable heat loss during this process will directly affect the accuracy of the measurement. Second, the mixing process often relies on manual operations, such as shaking the container to speed up mixing, which is not only inefficient but also prone to human error, resulting in uneven mixing, further affecting measurement accuracy. In addition, traditional measurement devices often lack effective temperature control and measurement methods, making the experimental results easily affected by ambient temperature fluctuations. Finally, the measurement devices on the market can only test one sample at a time, which is inefficient and cannot form a direct comparative test.

[0004] Therefore, it is necessary to design an efficient rock and soil specific heat capacity measurement device with the advantages of simple structure, convenient operation, high measurement accuracy and the ability to test multiple samples. Summary of the Invention

[0005] The purpose of the utility model is to provide a high-efficiency rock and soil specific heat capacity measuring device which is simple, efficient, easy to operate and has high measuring accuracy.

[0006] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions:

[0007] A high-efficiency rock and soil specific heat capacity measuring device includes a measuring box, a water injection pump system and a computer control and display system. The measuring box includes an upper water tank and a lower reaction box. The water injection pump system injects water into the water tank through a water injection port opened on the side wall of the water tank. Temperature probes in different directions are provided in the water tank. A partition with several built-in permeable channels is provided at the lower part of the water tank. Several heating-controlled reaction cylinders are provided in the reaction box. The bottom of the reaction cylinder is connected and fixed to an electric rotating base built into the base of the reaction box. A single-cylinder temperature probe is provided in the reaction cylinder. The water tank and the reaction box are connected into one by a snap fastener. The permeable channels correspond to the reaction cylinders one-to-one. Water in the water tank enters the reaction cylinder in the reaction box through the permeable channels. The computer control and display system is respectively connected to the water injection pump system, the permeable channels, the reaction cylinder, the electric rotating base, the temperature probe, and the single-cylinder temperature probe signal control.

[0008] Furthermore, the water tank is made of vacuum insulation material, and includes, from top to bottom, an upper wall, a side wall and a partition. The side wall of the water tank is composed of a left wall, a right wall, a front wall and a rear wall. The temperature probes are respectively connected and fixed to the left wall and the right wall of the water tank and extend into the water tank.

[0009] Furthermore, the reaction single cylinder includes a single cylinder rotating top cover, a single cylinder heating outer wall and a single cylinder base from top to bottom. The bottom of the single cylinder base is fixed to the electric rotating base by screwing. The computer control and display system controls the opening and closing of the single cylinder rotating top cover and the heating of the single cylinder heating outer wall respectively.

[0010] Furthermore, the outer wall of the single cylinder heating comprises an outer layer of thermal insulation material, a middle layer of electric heating wire mesh and an inner layer of metal heat transfer material from the outside to the inside. The computer control and display system controls the middle layer of electric heating wire mesh to generate heat, thereby heating the inside of the reaction cylinder.

[0011] Furthermore, the single-tube temperature probe is connected and fixed to the bottom of the reaction single tube and extends upward.

[0012] Compared with the prior art, the present invention has the following advantages:

[0013] The utility model discloses a high-efficiency rock and soil specific heat capacity measuring device, which is simple and efficient, easy to operate, and has high measurement accuracy. It can test multiple samples at a time and directly form a comparative test. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the assembled structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the structure of the present utility model.

[0016] Figure 3It is a schematic diagram of the partition structure of the utility model.

[0017] Figure 4 It is a schematic diagram of the structure of a single reaction chamber of the present utility model.

[0018] Figure 5 It is a structural schematic diagram of the electric rotating base of the utility model.

[0019] Figure 6 It is a schematic diagram of the top structure of the rotating base of the utility model.

[0020] Figure markings: 1. Measuring box; 2. Water tank; 3. Reaction box; 4. Left wall of water tank; 5. Water inlet; 6. Upper wall of water tank; 7. Right wall of water tank; 8. Water tank compartment; 9. Temperature probe one; 10. Partition; 11. Water permeable channel; 12. Water tank buckle; 13. Temperature probe two; 14. Reaction box base; 15. Left wall of reaction box; 16. Reaction box buckle; 17. Reaction single cylinder; 18. Reaction box compartment; 19. Single cylinder temperature probe; 20. Right wall of reaction box; 21. Electric rotating base; 22. Water injection pump system; 23. Computer control and display system; 111. Channel outer wall; 112. Rotating blades; 171. Electric single cylinder rotating top cover; 172. Single cylinder top cover ring; 173. Single cylinder heating outer wall; 174. Single cylinder base; 211. Rotating base top; 212. Rotating base bottom; 213. Thread. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

[0022] like Figure 1 、 2 As shown, an efficient rock and soil specific heat capacity measuring device includes a measuring box 1, a water injection pump system 22, and a computer control and display system 23. The measuring box 1 includes an upper water tank 2 and a lower reaction box 3.

[0023] The water injection pump system 22 injects water into the water tank 2 through the water injection port 5 provided in the side wall of the water tank 2. Temperature probes are provided in different directions within the water tank 2. A partition 10 with a plurality of water-permeable channels 11 is provided at the bottom of the water tank 2. Preferably, there are four water-permeable channels 11. The water tank 2 is made of vacuum insulation material and, from top to bottom, comprises an upper wall 6, a water tank compartment 8 formed by the side walls and the partition 10. The side walls comprise a left wall 4, a right wall 7, a front wall, and a rear wall. Two temperature probes are provided, respectively connected and fixed to the left and right walls 4 and 7, facing each other and extending into the water tank 2. These probes are temperature probe 1 9 and temperature probe 2 13.

[0024] The reaction box 3 is provided with a plurality of heating-controlled reaction tubes 17. Preferably, there are four reaction tubes 17. The bottom of the reaction tubes 17 is connected and fixed to the electric rotating base 21 built into the reaction box base 14. The reaction tubes 17 can rotate along with the rotation of the electric rotating base 21, so that the water and rock samples in the reaction tubes 17 are fully mixed. Figure 5 、 6 As shown, the electric rotating base 21 includes a rotating base top 211 and a rotating base bottom 212. The rotating base top 211 is provided with a spiral thread 213. The thread 213 is spirally arranged. The bottom of the reaction cylinder 17 is provided with a corresponding thread and can be screwed and fixed to the rotating base top 211. The reaction cylinder 17 is provided with a single-cylinder temperature probe 19 for detecting the temperature of the rock and soil sample in the reaction cylinder 17.

[0025] like Figure 4 As shown, the reaction tube 17 includes, from top to bottom, an electric single-cylinder rotating top cover 171, a single-cylinder heating outer wall 173, and a single-cylinder base 174. The electric single-cylinder rotating top cover 171 is connected to the single-cylinder top cover ring 172, and the bottom of the single-cylinder base 174 is fixed to the electric rotating base 21 by screw thread. The computer control and display system 23 controls the opening and closing of the electric single-cylinder rotating top cover 171 and the heating of the single-cylinder heating outer wall 173. The single-cylinder heating outer wall 173 includes, from the outside to the inside, an outer layer of thermal insulation material, a middle layer of electric heating wire mesh, and an inner layer of metal heat transfer material. The computer control and display system 23 controls the heating of the middle layer of electric heating wire mesh to heat the interior of the reaction tube 17. The single-cylinder temperature probe 19 is connected and fixed to the bottom of the reaction tube 17 and extends upward.

[0026] The water tank 2 and reaction tank 3 are connected integrally via snap fasteners, namely, the water tank snap fastener 12 and the reaction tank snap fastener 16. Specifically, a raised ring is formed at the bottom of the sidewall of the water tank 2, serving as the water tank snap fastener 12, while a groove is formed at the top of the sidewall of the reaction tank 3, serving as the reaction tank snap fastener 16. The raised ring and groove are plugged into each other to form an integrated structure. The permeable channel 11 corresponds to the reaction tube 17 in a one-to-one manner, allowing water in the water tank 2 to enter the reaction tube 17 in the reaction tank 3 through the permeable channel 11.

[0027] like Figure 3As shown, the permeable channel 11 includes a channel outer wall 111 and rotating blades 112. The rotating blades 112 are multiple. When the multiple rotating blades 112 are deployed, the permeable channel 11 is closed, and when the multiple rotating blades 112 are retracted, the permeable channel 11 is opened. Specifically, the multiple rotating blades 112 in the same permeable channel 11 are capable of rotating around a common axis. The shape and size of the blades are carefully designed to ensure that the permeable channel 11 can be efficiently closed or opened during rotation. The rotating blades 112 are connected to each other by a connecting rod structure to maintain synchronization and coordination of the rotating blades 112 during rotation. When closing, the rotating blades 112 rotate along a predetermined trajectory, gradually approaching the center of the permeable channel 11 and overlapping with each other until the opening of the permeable channel 11 is completely covered. When opening, the rotating blades 112 rotate along the opposite trajectory, gradually moving away from the center of the permeable channel 11 and separating from each other until the opening of the permeable channel 11 is completely released.

[0028] The computer control and display system 23 is respectively connected to the water injection pump system 22, the water permeable channel 11, the reaction single cylinder 17, the electric rotating base 21, the temperature probe 1 9, the temperature probe 2 13, and the single cylinder temperature probe 19 for signal control. Specifically, the computer control and display system 23 can control the water injection pump system 22 to open and inject water into the water tank 8 through the water injection port 5, control the opening and closing of the water permeable channel 11, control the opening and closing of the electric rotating top cover 171 of the reaction single cylinder 17, control the heating of the single cylinder heating outer wall 173 of the reaction single cylinder 17, control the rotation of the electric rotating base 21, and display the temperatures detected by the temperature probe 1 9, the temperature probe 2 13, and the single cylinder temperature probe 19 in real time. The detected temperature data can then be processed to obtain the specific heat capacity of the rock and soil sample.

[0029] The working principle of this utility model is as follows:

[0030] Step 1: Open the reaction box buckle 16 and the water tank buckle 12 to separate the measurement box 1 into the water tank 2 and the reaction box 3;

[0031] Step 2: Turn on the computer control and display system 23, control the electric single-cylinder rotating top cover 171 on the top of the four reaction single cylinders 17 to open, put the weighed rock and soil samples into the four reaction single cylinders 17 in turn, and close the electric single-cylinder rotating top cover 171 when the sample height exceeds the single-cylinder temperature probe 19; taking the reaction single cylinder 17 as an example, the sample weight is m sample The weight of the reaction tube 17 is m box ;

[0032] Step 3, connect and fix the water tank 2 and the reaction box 3 through the reaction box buckle 16 and the water tank buckle 12;

[0033] Step 4: Use the computer control and display system 23 to control the four reaction tubes 17 to heat the sample. The sample temperature is measured by the tube temperature probe 19. When the computer control and display system 23 shows that the sample has reached the preset temperature T a and remain stable for a period of time;

[0034] Step 5: Control the water injection pump system 22 to inject water into the water tank 8 through the water injection hole 5 through the computer control and display system 23. When the temperature of the temperature probe 1 9 and the temperature probe 2 13 are consistent, the water temperature is considered constant and remains static, and the water temperature T is recorded. b ;

[0035] Step 6: The computer control and display system 23 sequentially controls the rotating blades 112 on the four water-permeable channels 11 to unscrew. Correspondingly, the electric single-cylinder rotating top covers 171 on the four reaction cylinders 17 are sequentially controlled to unscrew, allowing the water in the water tank to flow into the reaction cylinders 17.

[0036] Step 7: The computer control and display system 23 controls the electric rotating base 21 to drive the reaction cylinder 17 to rotate, so that the water and the rock and soil sample are fully mixed. After the temperature stabilizes, the temperature of the mixture is read by the single cylinder temperature probe 19. c ;

[0037] Step 8: After the test is completed, open the reaction box buckle 16 and the water tank buckle 12 to separate the measurement box 1 into the water tank 2 and the reaction box 3;

[0038] Step 9: Remove the reaction tube 17 from the rotating base 21 and weigh the mixed weight m of the reaction tube 17 and the sample. mix , take out the sample and clean the monocular;

[0039] Step 10: All test parameters and data are summarized and stored through the computer control and display system 23, and analyzed and processed using built-in software to obtain the required rock and soil specific heat capacity test results. The specific calculation results are as follows:

[0040] According to the law of conservation of energy, the heat absorbed by water is equal to the heat released by the sample, so

[0041] ;

[0042] The weight of water in the reaction tube 17 is

[0043] ;

[0044] The specific heat capacity of water is a constant, so the specific heat capacity of the sample to be tested can be calculated as

[0045] ;

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the concept of the present invention. These improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An efficient rock and soil specific heat capacity measuring device, comprising a measuring box, characterized in that: It also includes a water injection pump system and a computer control and display system. The measuring box includes an upper water tank and a lower reaction box. The water injection pump system injects water into the water tank through a water injection port opened on the side wall of the water tank. Temperature probes in different directions are provided in the water tank. A partition with several built-in water permeable channels is provided at the lower part of the water tank. Several heating-controlled reaction cylinders are provided in the reaction box. The bottom of the reaction cylinder is connected and fixed to the electric rotating base built into the base of the reaction box. A single-cylinder temperature probe is provided in the reaction cylinder. The water tank and the reaction box are connected into one by a snap fastener. The water permeable channel corresponds to the reaction cylinder one-to-one. The water in the water tank enters the reaction cylinder in the reaction box through the water permeable channel. The computer control and display system is respectively connected to the water injection pump system, the water permeable channel, the reaction cylinder, the electric rotating base, the temperature probe, and the single-cylinder temperature probe signal control.

2. The high-efficiency rock and soil specific heat capacity measuring device according to claim 1, characterized in that: The water tank is made of vacuum insulation material and includes, from top to bottom, an upper wall, a side wall and a partition. The side wall of the water tank is composed of a left wall, a right wall, a front wall and a rear wall. The temperature probes are respectively connected and fixed to the left wall and the right wall of the water tank and extend into the water tank.

3. The high-efficiency rock and soil specific heat capacity measuring device according to claim 1, characterized in that: The reaction single cylinder includes a single cylinder rotating top cover, a single cylinder heating outer wall and a single cylinder base from top to bottom. The bottom of the single cylinder base is fixed to the electric rotating base by screw thread. The computer control and display system controls the opening and closing of the single cylinder rotating top cover and the heating of the single cylinder heating outer wall respectively.

4. The high-efficiency rock and soil specific heat capacity measuring device according to claim 3, characterized in that: The outer wall of the single cylinder heating comprises an outer layer of thermal insulation material, a middle layer of electric heating wire mesh and an inner layer of metal heat transfer material from the outside to the inside. The computer control and display system controls the middle layer of electric heating wire mesh to generate heat, thereby heating the inside of the reaction cylinder.

5. The high-efficiency rock and soil specific heat capacity measuring device according to claim 4, characterized in that: The single-tube temperature probe is connected and fixed to the bottom of the reaction single tube and extends upward.

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