CN212989219U - Rock-soil body specific heat capacity measuring device - Google Patents
Rock-soil body specific heat capacity measuring device Download PDFInfo
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- CN212989219U CN212989219U CN202021732735.0U CN202021732735U CN212989219U CN 212989219 U CN212989219 U CN 212989219U CN 202021732735 U CN202021732735 U CN 202021732735U CN 212989219 U CN212989219 U CN 212989219U
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Abstract
The utility model relates to a ground body specific heat capacity measuring device is made by vacuum insulation material, including upper end cover, heating cabinet and calorimetric case three major parts, the heating cabinet is used for heating the ground body, covers the welding and has first temperature sensor, and inside has hollow cartridge heater directly to weld on the heating cabinet bottom plate, takes out board and bottom plate ability free separation and combination, and the bottom plate lower part is fixed with two temperature sensor and a trefoil agitator, and calorimetric case and the heating cabinet of lower part pass through screwed connection. The utility model discloses with heating device and calorimetric device integration, let whole experimentation all go on in airtight thermal-insulated environment, avoided unnecessary calorific loss, promoted the degree of accuracy of experiment greatly, the device structural design is simple moreover, the simple operation, the practicality is strong.
Description
Technical Field
The utility model belongs to the technical field of calorifics parameter measurement, concretely relates to laboratory is with ground body specific heat capacity measuring device.
Background
Specific heat capacity is an important parameter for characterizing the thermal property of rock-soil mass, and refers to the heat quantity required by a certain substance per unit mass for increasing unit temperature. Currently, most of the specific heat capacity measuring devices used in laboratories are hybrid specific heat capacity testers, and the heat absorbed by low-temperature objects in a heat insulation device is equal to the heat emitted by high-temperature objects on the basis of the energy conservation principle. It adopts the cooling mixing method to obtain the rock-soil body specific heat capacity, need mix the soil sample that awaits measuring in the constant temperature drying cabinet immigration heat-preserving container with water during the test, and this process can make the rock-soil sample that awaits measuring expose in the air for a period, and the calorific loss that causes can influence the experiment precision. In addition, although the mixing of the rock soil sample to be measured and water can be accelerated by manual shaking, the effect is poor, the mixing is uneven, the temperature measurement is inaccurate, and the experiment precision is reduced.
Disclosure of Invention
The utility model provides a high accuracy laboratory is with ground body specific heat capacity measuring device to there is calorific loss in overcoming current measurement process, influences the shortcoming of experiment precision.
The utility model aims at realizing through the following technical scheme:
a rock-soil body specific heat capacity measuring device mainly comprises an upper end cover 1, a heating box 2 and a calorimetric box 3; the upper end cover 1 can be fixed with the top of the heating box 2 through the metal buckle 4, and the bottom of the heating box 2 can be fixed with the calorimetric box 3;
a first temperature sensor 6 is fixed at the lower end of the upper end cover 1;
a hollow heating cylinder 7 for heating a rock soil sample to be detected is fixed at the upper end of the bottom plate of the heating box 2, a heating switch 8 is arranged on the outer side wall of the heating box 2, and a trilobal stirrer 11, a second temperature sensor 12 and a third temperature sensor 13 which are positioned at the left side and the right side of the trilobal stirrer 11 are fixed at the lower end of the bottom plate of the heating box 2;
when the upper end cover 1 is fixed with the heating box 2, the first temperature sensor 6 can extend into the heating cylinder 7, and when the heating box 2 is fixed with the calorimetric box 3, the three-blade stirrer 11, the two temperature sensors 12 and the third temperature sensor 13 can extend into the box body of the calorimetric box 3;
the bottom of heating cabinet 2 includes mobilizable board 9 of taking out, even has pull ring 10 on taking out board 9, pull ring 10 can stimulate and take out board 9 and move to the outside, makes heating cabinet 2 and calorimetric case 3 intercommunication, and the rock and soil body that awaits measuring in the heating cylinder 7 directly gets into calorimetric case 3, and pull ring 10 can also promote to take out board 9 and move to the inside, makes calorimetric case 3 resume into airtight thermal-insulated environment.
Further, the number of the metal buckles 4 is 2, and the metal buckles are symmetrically fixed on the outer side wall of the top of the heating box 2.
Furthermore, the upper end cover 1 and the heating box 2 are provided with mutually matched rodent teeth.
Further, all be equipped with the screw thread on 2 bottom inside walls of heating cabinet and the 3 top lateral wall of calorimetric case.
Further, the upper end of the upper end cover 1 is provided with a handle 5.
Further, the heating switch 8 is a temperature control switch, and is connected with the heating cylinder 7 through a first lead 15, and is connected with the first temperature sensor 6 through a second lead 16, when the soil sample temperature measured by the first temperature sensor 6 reaches a preset temperature, a first lamp on the heating switch 8 is turned on, and the heating cylinder 7 stops heating.
Further, the three-blade stirrer 11 is connected with a stirrer switch 14 through a lead wire III 17.
Further, the second temperature sensor 12 and the third temperature sensor 13 transmit temperature information to a computer through a fourth lead 18 and a fifth lead 19, respectively, so that the temperature of the mixture can be monitored in real time.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model discloses ground body specific heat capacity measuring device adopts airtight thermal insulation material, with heating device and calorimetric device integration, the ground body that awaits measuring heats to predetermineeing the temperature back in the cartridge heater, takes out from taking out the board, can directly fall into the calorimetric box of below from the cartridge heater, then recovers rapidly and takes out the board, and whole measurement process all goes on in thermal-insulated environment, and the heat that has significantly reduced scatters and disappears to experimental precision has been improved. In addition, electric mixer has still been added to the device for the mixing process of water and the rock soil sample that awaits measuring, make the two mix more evenly more abundant, measure the mixture temperature through two temperature sensor that set up in different positions department with aassessment stirring effect, reduced experimental error to a certain extent.
Drawings
FIG. 1 is a schematic structural view of the device for measuring specific heat capacity of a rock-soil body of the present invention;
FIG. 2 is a schematic diagram of the assembled state of the device for measuring specific heat capacity of rock-soil body of the present invention;
FIG. 3 is a top view of the heating chamber;
fig. 4 is a schematic structural diagram of a heating switch.
In the figure, 1, an upper end cover 2, a heating box 3, a heat measuring box 4, a metal buckle 5, a handle 6, a first temperature sensor 7, a heating cylinder 8, a heating switch 9, a pulling plate 10, a pulling ring 11, a three-blade stirrer 12, a second temperature sensor 13, a third temperature sensor 14 and a stirrer switch are arranged.
Detailed Description
As shown in fig. 1-3, the utility model discloses ground body specific heat capacity measuring device, including upper end cover 1, heating cabinet 2, calorimetric case 3, metal buckle 4, handle 5, first temperature sensor 6, cartridge heater 7, heating switch 8, take out board 9, pull ring 10, three-bladed agitator 11, second temperature sensor 12, third temperature sensor 13, agitator switch 14.
The whole device is made of vacuum heat insulation materials, consists of an upper end cover 1, a heating box 2 and a calorimetric box 3, and can be freely disassembled; the upper end cover 1 and the heating box 2 are connected through a metal buckle 4, a handle 5 is assembled on the upper end cover 1, and a first temperature sensor 6 is fixed at the lower end of the upper end cover 1; a hollow heating cylinder 7 is fixed on a bottom plate of the heating box 2, a rock soil sample to be detected is heated in the heating cylinder 7, and a heating switch 8 is arranged on the outer side wall of the heating box 2; the bottom plate of the heating box 2 is provided with a part of a drawing plate 9 which can be drawn out and pulled by a pull ring 10; the three-blade stirrer 11, the second temperature sensor 12 and the third temperature sensor 13 are fixed to the lower portion of the bottom plate of the heating box 2, and the stirrer switch 14 is provided outside the heating box 2.
The upper end cover 1 and the heating box 2 are provided with mutually matched rodents, so that the first temperature sensor 6 connected to the upper end cover 1 can be in a fixed position.
The heating box 2 and the calorimetric box 3 are detachable and assembled or separated through threads, so that sample loading and cleaning are greatly facilitated.
The pulling plate 9 is pulled by the pull ring 10, so that the rock-soil body to be detected in the heating cylinder 7 can directly enter the heat measuring box 3, and the recovering pulling plate 9 can recover the heat measuring box 3 to a closed heat insulation environment.
The three-blade stirrer 11 is connected with the stirrer switch 14 through a third conducting wire 17, and can stir the rock and soil mass to be measured and water more fully. When the temperatures monitored by the second temperature sensor 12 and the third temperature sensor 13 are consistent, the stirring is considered to be uniform.
The heating switch 8 is a temperature control switch, is connected with the heating cylinder 7 through a first lead 15, is connected with the first temperature sensor 6 through a second lead 16, and when the soil sample temperature measured by the first temperature sensor 6 reaches a preset temperature, a first lamp on the heating switch 8 is turned on, and the heating cylinder 7 stops heating.
The second temperature sensor 12 and the third temperature sensor 13 respectively lead temperature information into a computer through a fourth lead 18 and a fifth lead 19, so that the temperature of the mixture can be monitored in real time.
The utility model discloses the working process: firstly, weighing a certain weight m1The heating tank 2 and the calorimeter 3 are assembled together by screwing, and the weight m is weighed2The granular rock soil sample to be detected is put into a heating cylinder 7, an upper end cover 1 is covered, and the initial temperature T of water is read1Turning on the heating switch 8 and setting the heating temperature, heating the rock soil sample to be measured in the heating cylinder 7 until the heating is turned onTurning off the first lamp, recording the initial temperature T of the rock soil sample2The heating switch is turned off. The pulling plate 9 is pulled out through the pull ring 10, so that the rock soil sample to be detected directly falls into the calorimetric box 3, the pulling plate is rapidly pushed inwards to recover, the stirrer switch 14 is opened, the three-blade stirrer 11 is enabled to stir the mixture of the water and the rock soil sample to be detected at a certain speed, the three-blade stirrer 11 is closed when the temperatures monitored by the second temperature sensor 12 and the third temperature sensor 13 are consistent, and the final temperature T of the mixture is read3。
According to the law of conservation of energy, in a closed heat insulation environment, after the rock and soil mass to be detected is mixed with water, the heat absorbed by the water is equal to the heat dissipated by the rock and soil mass to be detected, namely:
cwater (W)×m1×(T3-T1)＝cRock soil sample to be measured×m2×(T3-T2)
Because the specific heat capacity of water is a certain value, the specific heat capacity of the rock soil sample to be measured can be obtained through the formula:
Claims (8)
1. the utility model provides a ground body specific heat capacity measuring device which characterized in that: mainly comprises an upper end cover (1), a heating box (2) and a calorimetric box (3);
the upper end cover (1) can be fixed with the top of the heating box (2) through a metal buckle (4), and the bottom of the heating box (2) can be fixed with the heat measuring box (3);
a first temperature sensor (6) is fixed at the lower end of the upper end cover (1);
a hollow heating cylinder (7) for heating a rock soil sample to be detected is fixed at the upper end of the bottom plate of the heating box (2), a heating switch (8) is arranged on the outer side wall of the heating box (2), and a trilobe stirrer (11), a second temperature sensor (12) and a third temperature sensor (13) which are positioned at the left side and the right side of the trilobe stirrer (11) are fixed at the lower end of the bottom plate of the heating box (2);
when the upper end cover (1) is fixed with the heating box (2), the first temperature sensor (6) can extend into the heating cylinder (7), and when the heating box (2) is fixed with the calorimetric box (3), the three-blade stirrer (11), the second temperature sensor (12) and the third temperature sensor (13) can extend into the box body of the calorimetric box (3);
the bottom of heating cabinet (2) is including mobilizable board (9) of taking out, even has pull ring (10) on taking out board (9), pull ring (10) can stimulate and take out board (9) and move to the outside, makes heating cabinet (2) and calorimetric box (3) intercommunication, and the directly volume of getting into of the ground body that awaits measuring in heating cylinder (7) is in hot case (3), and pull ring (10) can also promote and take out board (9) and move to the inside, makes volume hot case (3) resume airtight thermal-insulated environment.
2. The device for measuring the specific heat capacity of the rock-soil body according to claim 1, wherein: the number of the metal buckles (4) is 2, and the metal buckles are symmetrically fixed on the outer side wall of the top of the heating box (2).
3. The device for measuring the specific heat capacity of the rock-soil body according to claim 2, wherein: the upper end cover (1) and the heating box (2) are both provided with meshed teeth which are matched with each other.
4. The device for measuring the specific heat capacity of the rock-soil body according to claim 1, wherein: and threads are arranged on the inner side wall of the bottom of the heating box (2) and the outer side wall of the top of the calorimetric box (3).
5. The device for measuring the specific heat capacity of the rock-soil body according to claim 1, wherein: the upper end of the upper end cover (1) is provided with a handle (5).
6. The device for measuring the specific heat capacity of the rock-soil body according to claim 1, wherein: the heating switch (8) is a temperature control switch, is connected with the heating cylinder (7) through a first wire (15), is connected with the first temperature sensor (6) through a second wire (16), and when the soil sample temperature measured by the first temperature sensor (6) reaches a preset temperature, a first lamp on the heating switch (8) is turned on, and the heating cylinder (7) stops heating.
7. The device for measuring the specific heat capacity of the rock-soil body according to claim 1, wherein: the three-blade stirrer (11) is connected with a stirrer switch (14) through a third lead (17).
8. The device for measuring the specific heat capacity of the rock-soil body according to claim 1, wherein: the second temperature sensor (12) and the third temperature sensor (13) transmit temperature information to the computer through a fourth lead (18) and a fifth lead (19), and the temperature of the mixture can be monitored in real time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021732735.0U CN212989219U (en) | 2020-08-19 | 2020-08-19 | Rock-soil body specific heat capacity measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021732735.0U CN212989219U (en) | 2020-08-19 | 2020-08-19 | Rock-soil body specific heat capacity measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812153A (en) * | 2020-08-19 | 2020-10-23 | 吉林大学 | Rock-soil body specific heat capacity measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111812153A (en) * | 2020-08-19 | 2020-10-23 | 吉林大学 | Rock-soil body specific heat capacity measuring device |
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