Equipment for measuring thermal conductivity of concrete in thermal fatigue cycle of 300-600 DEG C

Abstract

The utility model discloses equipment for measuring the thermal conductivity of concrete in a thermal fatigue cycle of 300-600 DEG C, and relates to the technical field of thermal conductivity measurement. The box-type furnace comprises a box-type furnace body, a lifting material taking and placing assembly and a heat dissipation assembly, a sealing cover is arranged at the top of the box-type furnace body, a containing frame is fixedly connected to the bottom of the sealing cover, and the bottom of the containing frame penetrates into an inner cavity of the box-type furnace body. A concrete sample can move up and down in the placing frame through the lifting material taking and placing assembly, and when the concrete sample is lifted to the outer side of the box-type furnace, the heat insulation plate at the bottom of the placing frame seals the top of the box-type furnace, so that heat in the box-type furnace is prevented from escaping; the heated concrete sample is located at the top of the box-type furnace, a worker can conveniently take down the concrete sample and place a new sample into the placing frame, the placing frame can continue to heat after entering the box-type furnace again, and the concrete sample can be continuously heated and detected.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the thermal conductivity determination technical field, especially relate to a device for 300 to 600 DEG C thermal fatigue cycle in the measurement of concrete thermal conductivity. BACKGROUND

[0002] The heat storage system is an important component in the solar thermal power plant, the heat energy is converted into mechanical energy through the heat engine conversion process, and then the generator is driven to generate electricity, the heat storage system introduces the binary mixture of molten salt as the heat storage material into the storage tank, but its high cost limits the development of the heat storage system, the current solid material, such as concrete heat storage system, becomes an attractive choice for storing sensible heat, and a high-temperature storage concrete up to 400 DEG C has been designed and verified, in order to further verify and optimize the heat storage efficiency of the concrete mixture, a device for measuring the thermal conductivity of concrete at 300 to 600 DEG C is needed to realize higher operating efficiency of the heat storage system.

[0003] The existing device for measuring the thermal conductivity of concrete is usually composed of a box furnace, a K-type thermocouple, a high-temperature thermal conductivity probe and a thermal conductivity measuring device, the concrete block placed in the box furnace is heated, the maximum temperature of the box furnace can reach 1200 DEG C, which can be used to verify and optimize the heat storage efficiency of the concrete mixture, and the heat storage efficiency of the concrete sample is detected by the measuring device, but the concrete sample needs to be taken out by the staff after heating, and the opening of the furnace door during the continuous experiment process will cause the temperature in the furnace to decrease rapidly, resulting in an increase in the heating time of the concrete sample each time, which reduces the experimental efficiency and is not conducive to use.

[0004] Therefore, we provide a device for measuring the thermal conductivity of concrete in 300 to 600 DEG C thermal fatigue cycle to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model discloses a device for measuring the thermal conductivity of concrete in 300 to 600 DEG C thermal fatigue cycle, through the cooperation of the lifting material taking and placing assembly and the heat dissipation assembly, the device for measuring the thermal conductivity of concrete in 300 to 600 DEG C thermal fatigue cycle in the prior art is easy to cause the temperature in the box furnace to decrease rapidly during the material taking process, and the heating time of the concrete sample is increased during the continuous experiment process, which reduces the experimental efficiency.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes.

[0007] The utility model discloses a kind of equipment for 300 to 600 ℃ thermal fatigue cycle measurement concrete thermal conductivity, including box furnace, lifting material taking and placing assembly and heat dissipation component, the top of the box furnace is provided with sealing cover, the bottom of the sealing cover is fixedly connected with placing rack, the bottom of the placing rack is through to the inner chamber of box furnace, the lifting material taking and placing assembly includes control box, the front side of the control box is fixedly connected with box furnace, the bottom of the control box inner chamber is fixedly connected with first motor, the top of the output end of first motor is fixedly connected with screw rod, the surface of screw rod is threadedly connected with telescopic link, the top of telescopic link is through control box and fixedly connected with connecting frame, the bottom of connecting frame is fixedly connected with sealing cover, the heat dissipation component includes two mounting brackets, the top of opposite side of two mounting brackets is fixedly connected with sealing cover, exhaust fan is movably connected between the top and bottom of mounting bracket inner chamber, the rear side of exhaust fan is fixedly connected with limit plate, the opposite side of two limit plates is fixedly connected with spring, the front side of exhaust fan is fixedly connected with adjusting mechanism.

[0008] The utility model further provides for, the adjusting mechanism includes fixed frame, the rear side of fixed frame is fixedly connected with exhaust fan, the top of fixed frame is fixedly connected with second motor, the bottom of second motor output is through fixed frame and fixedly connected with cam, fixed frame can be convenient for the installation of second motor, second motor can drive cam rotation, cam can extrude mounting bracket, so that the use angle of exhaust fan changes.

[0009] The utility model further provides for, the top of control box is equipped with the through-hole that uses in cooperation with telescopic link, the inner wall of telescopic link is equipped with the screw thread that uses in cooperation with screw rod, through-hole can conveniently telescopic link moves up and down, screw thread can cooperate with screw rod and control telescopic link to use height adjustment.

[0010] The utility model further provides for, the both sides of control box inner chamber are fixedly connected with slide, the surface of slide is slidably connected with sliding sleeve, the opposite side of two sliding sleeves is fixedly connected with telescopic link, slide and sliding sleeve can be positioned telescopic link, improve the stability in telescopic link moving process, prevent it from self-rotation.

[0011] The utility model further provides for, the front side of both sides of box furnace is fixedly connected with positioning sleeve, the inner chamber of positioning sleeve is slidably connected with positioning rod, the top of positioning rod is fixedly connected with sealing cover, positioning sleeve and positioning rod can be positioned sealing cover, so that it can stably move up and down, prevent it from shaking in moving process.

[0012] The utility model further sets up, the top and bottom of exhaust fan with the inner wall of mounting bracket are connected through bearing, the bottom of placing rack is fixedly connected with heat insulation board, bearing can make exhaust fan rotate, can change its exhaust angle, heat insulation board can increase the heat insulation effect of placing rack, prevent the heat of box type stove inside from discharging.

[0013] The utility model further sets up, both sides of control box all are fixedly connected with electric cylinder, the front side of electric cylinder output is fixedly connected with positioning toothed plate, both sides of sealing cover rear side all are fixedly connected with fixed toothed plate, the front side of fixed toothed plate is engaged with positioning toothed plate, and electric cylinder can control the use position of positioning toothed plate, and positioning toothed plate can be engaged with fixed toothed plate, thereby limiting and fixing sealing cover.

[0014] The utility model further sets up, the rear side of control box is fixedly connected with sealing plate through bolt, the front side of box type stove is provided with observation window, sealing plate can conveniently maintain and repair the internal parts of control box for staff, and observation window can conveniently observe the concrete sample in the inside of box type stove for staff.

[0015] The utility model has the advantages of the following.

[0016] 1, the utility model discloses a lifting and taking and placing assembly can make concrete sample be located in placing rack and move up and down, when concrete sample is lifted to the outside of box type stove, because the heat insulation board of placing rack bottom seals the top of box type stove, prevents its internal heat from escaping, and the concrete sample after heating is located at the top of box type stove, can conveniently take down and place new sample to the inside of placing rack for staff, and placing rack can continue to heat after reentering the inside of box type stove, can continuously heat and detect concrete sample, improve experimental efficiency.

[0017] 2, the utility model discloses a heat dissipation assembly can quickly cool concrete sample after high-temperature detection, makes its temperature reduce after conveniently taking down for staff, when concrete sample is lifted to the top of box type stove by placing rack, utilizes exhaust fan and blows out airflow, removes heat through the quick flowing air, adjusts mechanism and spring cooperation control exhaust fan and constantly swings, increases its blowing range, speeds up the cooling speed of concrete sample, does not need to wait for its natural cooling, further increase experimental efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing do simple introduction.

[0019] Figure 1 It is a kind of for the stereogram of the equipment for measuring the thermal conductivity of concrete in 300 to 600 DEG C thermal fatigue cycle.

[0020] Figure 2 is a side view of a device for measuring thermal conductivity of concrete in thermal fatigue cycles of 300 to 600℃;

[0021] Figure 3 is a rear view of a device for measuring thermal conductivity of concrete in thermal fatigue cycles of 300 to 600℃;

[0022] Figure 4 is a control box sectional view of a device for measuring thermal conductivity of concrete in thermal fatigue cycles of 300 to 600℃;

[0023] Figure 5 is a placing rack and sealing cover lifting schematic diagram of a device for measuring thermal conductivity of concrete in thermal fatigue cycles of 300 to 600℃.

[0024] In the drawings: 1, box furnace; 2, sealing cover; 3, placing rack; 4, lifting and taking out material assembly; 41, control box; 42, first motor; 43, screw rod; 44, telescopic rod; 45, connecting frame; 5, heat dissipation assembly; 51, mounting frame; 52, exhaust fan; 53, limiting plate; 54, spring; 55, adjusting mechanism; 551, fixed frame; 552, second motor; 553, cam; 6, electric cylinder; 7, positioning tooth plate; 8, fixed tooth plate. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. The described embodiments are only some of the embodiments of the present application, not all.

[0026] Embodiment one

[0027] Please refer to Figures 1-5The utility model relates to a kind of equipment for measuring the thermal conductivity of concrete in 300 to 600 ℃ thermal fatigue cycle, including box furnace 1, lifting and taking material assembly 4 and heat dissipation component 5, the top of box furnace 1 is provided with sealing cover 2, sealing cover 2's bottom is fixedly connected with placing rack 3, the bottom of placing rack 3 is penetrated to the inner chamber of box furnace 1, lifting and taking material assembly 4 includes control box 41, and the front side of control box 41 is fixedly connected with box furnace 1, and the bottom of control box 41 inner chamber is fixedly connected with first motor 42, and the top of the output end of first motor 42 is fixedly connected with screw rod 43, and the surface of screw rod 43 is threadedly connected with telescopic link 44, and the top of telescopic link 44 is penetrated control box 41 and is fixedly connected with connecting frame 45, and the bottom of connecting frame 45 is fixedly connected with sealing cover 2, and heat dissipation component 5 includes two mounting brackets 51, and the top of the opposite side of two mounting brackets 51 is fixedly connected with sealing cover 2, and exhaust fan 52 is movably connected between the top and bottom of mounting bracket 51 inner chamber, and the rear side of exhaust fan 52 is fixedly connected with limit plate 53, and the opposite side of two limit plates 53 is fixedly connected with spring 54, and the front side of exhaust fan 52 is fixedly connected with adjusting mechanism 55.

[0028] Specifically: sealing cover 2 can seal the top opening of box furnace 1, placing rack 3 can conveniently place concrete sample, first motor 42 can cooperate with screw rod 43 to control the use height of telescopic link 44 and connecting frame 45, connecting frame 45 can cooperate with telescopic link 44 to adjust the position of sealing cover 2 and placing rack 3, conveniently staff places and takes out concrete sample, exhaust fan 52 can blow air to blow and cool concrete sample in high temperature state, adjusting mechanism 55 can cooperate with limit plate 53 and spring 54 to control exhaust fan 52 to swing constantly, increase its blowing range, improve its cooling effect to concrete sample, accelerate the cooling speed of concrete sample.

[0029] Example two

[0030] Please refer to Figures 1-5On the basis of embodiment one, the adjusting mechanism 55 comprises a fixed frame 551, the rear side of the fixed frame 551 is fixedly connected with the exhaust fan 52, the top of the fixed frame 551 is fixedly connected with a second motor 552, the bottom of the output end of the second motor 552 penetrates through the fixed frame 551 and is fixedly connected with a cam 553, the top of the control box 41 is provided with a through hole used in cooperation with the telescopic rod 44, the inner wall of the telescopic rod 44 is provided with a thread used in cooperation with the screw rod 43, both sides of the inner cavity of the control box 41 are fixedly connected with a slide, the surface of the slide is slidingly connected with a sliding sleeve, the opposite side of both sliding sleeves is fixedly connected with the telescopic rod 44, the front side of both sides of the box furnace 1 is fixedly connected with a positioning sleeve, the inner cavity of the positioning sleeve is slidingly connected with a positioning rod, the top of the positioning rod is fixedly connected with the sealing cover 2, the top and the bottom of the exhaust fan 52 are movably connected with the inner wall of the mounting bracket 51 through bearings, the bottom of the placing rack 3 is fixedly connected with a heat insulation plate, both sides of the control box 41 are fixedly connected with the electric cylinder 6, the front side of the output end of the electric cylinder 6 is fixedly connected with the positioning toothed plate 7, both sides of the rear side of the sealing cover 2 are fixedly connected with a fixed toothed plate 8, the front side of the fixed toothed plate 8 is engaged with the positioning toothed plate 7, the rear side of the control box 41 is fixedly connected with a sealing plate through bolts, and the front side of the box furnace 1 is provided with an observation window.

[0031] Specifically: the fixed frame 551 can facilitate the installation of the second motor 552, the second motor 552 can drive the cam 553 to rotate, the cam 553 can extrude the mounting bracket 51, the through hole can facilitate the up and down movement of the telescopic rod 44, the thread can cooperate with the screw rod 43 to control the use height of the telescopic rod 44, the slide and the sliding sleeve can limit the telescopic rod 44, improve the stability of the telescopic rod 44 during movement, prevent it from rotating, the positioning sleeve and the positioning rod can position the sealing cover 2, so that it can stably move up and down, prevent it from shaking during movement, the bearing can make the exhaust fan 52 rotate, so that it can change the exhaust angle, the heat insulation plate can increase the heat insulation effect of the placing rack 3, prevent the heat inside the box furnace 1 from being discharged, the electric cylinder 6 can control the use position of the positioning toothed plate 7, the positioning toothed plate 7 can be engaged with the fixed toothed plate 8, thereby limiting and fixing the sealing cover 2, the sealing plate can facilitate the maintenance and repair of the parts inside the control box 41 by the staff, and the observation window can facilitate the observation of the concrete sample inside the box furnace 1 by the staff.

[0032] The working principle of the utility model is: in the process of detecting the heat storage efficiency of the concrete sample, the concrete sample to be detected and the detection probe are placed into the box furnace 1 by the placing rack 3, the concrete sample is heated to 600 DEG C by the box furnace 1, the detection probe records various data of the concrete, after the data recording is completed, the first motor 42 is started, the first motor 42 controls the telescopic rod 44 and the connecting frame 45 to move in cooperation with the screw rod 43, the connecting frame 45 moves to control the sealing cover 2 and the placing rack 3 to move upwards, until the placing rack 3 drives the concrete sample to move to the outside of the box furnace 1, at this time, the heat insulation plate at the bottom of the placing rack 3 seals the opening at the top of the box furnace 1, prevents the internal heat from being dissipated, avoids the internal heat of the box furnace 1 from being lost rapidly in the process of taking and feeding materials, reduces the heating time of the concrete sample, improves the experimental efficiency, the concrete sample in the high temperature state is located at the top of the box furnace 1, the exhaust fan 52 and the second motor 552 are started, the second motor 552 controls the exhaust fan 52 to swing constantly in cooperation with the cam 553 and the spring 54, the exhaust fan 52 blows air flow in the swinging process, makes the air near the concrete sample flow rapidly, carries away the heat on the surface of the concrete sample, makes the concrete sample cool down rapidly, does not need to wait for its natural cooling, further increases the experimental efficiency, after cooling, the staff takes down the concrete sample and places the new sample in the placing rack 3 to carry out continuous experiment, improves the experimental efficiency.

[0033] The above disclosed utility model preferred embodiments are only used to help the description of the utility model, the preferred embodiments do not describe all the details, and the utility model is not limited to the specific implementation mode, the description selects and specifically describes these embodiments, in order to better explain the principle and practical application of the utility model, so that the person skilled in the art can well understand and utilize the utility model.

Claims

1. An apparatus for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C comprising a box furnace (1), a lifting and placing assembly (4) and a heat dissipation assembly (5), characterized in that: The top of the box furnace (1) is provided with a sealing cover (2), the bottom of the sealing cover (2) is fixedly connected with a placing rack (3), and the bottom of the placing rack (3) penetrates into the inner cavity of the box furnace (1); The lifting and placing assembly (4) comprises a control box (41), the front side of the control box (41) is fixedly connected with the box furnace (1), the bottom of the inner cavity of the control box (41) is fixedly connected with a first motor (42), the top of the output end of the first motor (42) is fixedly connected with a screw rod (43), the surface of the screw rod (43) is threadedly connected with a telescopic rod (44), the top of the telescopic rod (44) penetrates through the control box (41) and is fixedly connected with a connecting rack (45), and the bottom of the connecting rack (45) is fixedly connected with the sealing cover (2). The heat dissipation assembly (5) comprises two mounting racks (51), the top of the opposite side of each of the two mounting racks (51) is fixedly connected with the sealing cover (2), and the top and the bottom of the inner cavity of the mounting rack (51) are movably connected with an exhaust fan (52).

2. A device for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C according to claim 1, characterized in that: The rear side of the exhaust fan (52) is fixedly connected with a limiting plate (53), the opposite side of each of the two limiting plates (53) is fixedly connected with a spring (54), and the front side of the exhaust fan (52) is fixedly connected with an adjusting mechanism (55).

3. A device for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C according to claim 1, characterized in that: The rear side of the fixed frame (551) is fixedly connected with the exhaust fan (52), the top of the fixed frame (551) is fixedly connected with a second motor (552), and the bottom of the output end of the second motor (552) penetrates through the fixed frame (551) and is fixedly connected with a cam (553).

4. The apparatus for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C according to claim 1, characterized in that: A through hole matched with the telescopic rod (44) is formed in the top of the control box (41), and a screw thread matched with the screw rod (43) is formed in the inner wall of the telescopic rod (44).

5. The apparatus for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C according to claim 1, characterized in that: The inner cavity of the control box (41) is fixedly connected with a slide on both sides, the slide is movably connected with a sliding sleeve on the surface, and the opposite side of each of the two sliding sleeves is fixedly connected with the telescopic rod (44).

6. The apparatus for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C according to claim 1, characterized in that: The front side of each of the two sides of the box furnace (1) is fixedly connected with a positioning sleeve, the inner cavity of the positioning sleeve is movably connected with a positioning rod, and the top of the positioning rod is fixedly connected with the sealing cover (2).

7. The apparatus for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C according to claim 1, characterized in that: The top and the bottom of the exhaust fan (52) are movably connected with the inner wall of the mounting rack (51) through bearings, and the bottom of the placing rack (3) is fixedly connected with an insulating plate.

8. The apparatus for measuring thermal conductivity of concrete in thermal fatigue cycles from 300 to 600 °C according to claim 1, characterized in that: Both sides of the control box (41) are fixedly connected with an electric cylinder (6), the front side of the output end of the electric cylinder (6) is fixedly connected with a positioning toothed plate (7), both sides of the rear side of the sealing cover (2) are fixedly connected with a fixed toothed plate (8), and the front side of the fixed toothed plate (8) is engaged with the positioning toothed plate (7). The rear side of the control box (41) is fixedly connected with a sealing plate through bolts, and the front side of the box furnace (1) is provided with an observation window.

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