Temperature conduction experimental device for thermal metering

Abstract

The utility model discloses a thermal metering temperature conduction experiment device, which comprises a bottom plate, a base, an experiment cylinder, a control box and an exhaust fan, the wall of the middle position of the experiment cylinder is a semicircular turning cover, the experiment cylinder is provided with two heat insulation plates which are arranged at intervals on the left side of the semicircular turning cover, and a heat insulation plate is inserted on the right side of the semicircular turning cover. An air inlet pipe is arranged at the right end of the experiment cylinder, an exhaust pipe is arranged at the left end of the experiment cylinder, an air inlet of the air inlet pipe is connected with an exhaust fan, and a heating assembly is arranged in the left half part of the experiment cylinder; two side-by-side temperature sensor assemblies are arranged on the side wall of the left side of the semicircular turning cover, three side-by-side temperature sensor assemblies are arranged on the side wall of the lower portion of the semicircular turning cover, and a temperature sensor assembly is arranged on the side wall of the right side of the semicircular turning cover. The device is high in experiment precision and is not influenced by environment temperature.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat conduction experiment technical field especially relates to a temperature conduction experiment device of thermometric measurement. BACKGROUND

[0002] Temperature conduction experiment uses linear conductor (hot wire) that is buried in sample along sample length direction to carry out local heating, and the hot wire carries the current of known constant power, that is, the power is invariable in time and sample length direction, and the thermal conductivity coefficient can be calculated from the power of hot wire and the temperature of two known time intervals after the current is turned on and heated, and the function of temperature rise and time is the thermal conductivity coefficient of the sample to be tested, and the utility model is suitable for various industrial materials, rubber tires, building materials, refractory materials, process materials, ceramic materials, foods and the like, and the current thermal conductivity coefficient tester has certain time difference when using temperature sensor to measure sample and the like heating disc, and the force control of measurement is not the same, thereby leading to certain error of experimental result. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the related art is solved to some extent. To this end, one object of the utility model is to provide a temperature conduction experiment device of thermometric measurement, which solves the problems of low measurement accuracy, easy environmental influence, unstable temperature during heating block testing and the like.

[0004] The utility model provides a kind of temperature conduction experimental device of thermal measurement, including bottom plate, pedestal, experimental cylinder, control box and exhaust fan, the pedestal is fixed on bottom plate, the experimental cylinder is placed horizontally and partially inlaid on pedestal, the wall of experimental cylinder middle position is semicircular flip, one end of the semicircular flip is rotatably connected with the wall of experimental cylinder, two pieces of heat insulation plate are inserted in the left side of semicircular flip of experimental cylinder, and one piece of heat insulation plate is inserted in the right side, the right end of experimental cylinder is equipped with air inlet pipe, and the left end is equipped with exhaust pipe, the air inlet of air inlet pipe is connected with exhaust fan, heating assembly is equipped in the left half of experimental cylinder, test sample plate is inserted in the position of semicircular flip of experimental cylinder, heat absorption component is equipped in the right half of experimental cylinder, and the heating assembly includes heating plate, heat spreading plate, heat conducting plate and first plate pushing structure, the right side of heating plate is fixedly connected with one side of heat spreading plate and is pasted, the other side of heat spreading plate is fixedly connected with the left side of heat conducting plate, and the first plate pushing structure includes push rod, limit sliding rod and servo motor, two set blocks are symmetrically equipped on the annular side wall of heating plate, two set blocks are slidably sleeved on a limit sliding rod respectively, the limit sliding rod is fixedly connected on the inner wall of experimental cylinder at both ends by a connecting plate, a push rod is fixedly connected on the left side wall of heating plate, a limit sleeve is sleeved on the push rod, the limit sleeve is fixed on the inner wall of experimental cylinder by connecting rod, the tail end of push rod is screwed into a lead screw, the rotating shaft of servo motor is connected with one end of lead screw, and servo motor is fixedly installed in experimental cylinder, the heat absorption component includes heat absorption plate, mounting plate and second pushing structure, the mounting plate is fixedly connected on the right side of heat absorption plate, the second pushing structure is installed on the mounting plate, the second pushing structure is same with the structure of first pushing structure and is same with installation mode, two side-by-side temperature sensor components are equipped on the side wall of semicircular flip left side of experimental cylinder, three side-by-side temperature sensor components are equipped on the side wall below semicircular flip, and one temperature sensor component is equipped on the side wall of semicircular flip right side, control box is installed on the bottom plate, and the control box is used to control experimental device to work.

[0005] In some embodiments of the utility model, the inner wall of experimental cylinder below semicircular flip is pasted with arc plate, the inner side of arc plate is equipped with arc slot, the test sample plate includes circular sample plate, arc convex strip and top resisting column, the arc convex strip is fixed on the lower half annular wall of circular sample plate, and the top resisting column is fixed on the top annular wall, the arc convex strip is just clamped in arc slot, and the annular wall of circular sample plate is pasted with arc plate.

[0006] In some other embodiments of the utility model, the semicircular flip is equipped with bolt on the end of opening, the end of arc plate leaks out of the opening of experimental cylinder in semicircular flip position, the position of arc plate end leakage is equipped with bolt hole, when the experimental cylinder is covered on semicircular flip, bolt is screwed in bolt hole.

[0007] In some other embodiments of the present application, the heat insulation plate comprises a large semicircular plate and a small semicircular plate, the large semicircular plate and the small semicircular plate are concentric after splicing, the small semicircular plate is inserted into the experimental cylinder and is attached to the inner wall of the experimental cylinder, the large semicircular plate is inserted into the experimental cylinder, and the annular wall of the large semicircular plate is flush with the outer wall of the experimental cylinder, and a pull rod is arranged at the middle position of the annular wall of the large semicircular plate.

[0008] In some other embodiments of the present application, the temperature sensor assembly large semicircular plate comprises a cylinder and an electronic temperature sensor, the electronic temperature sensor is connected to the telescopic shaft of the cylinder, the heat spreading plate, the heat conducting plate, the test sample plate and the heat absorbing plate are provided with temperature measuring holes at the same measuring device and the temperature measuring holes are on the same straight line, and the cylinder and the electronic temperature sensor are inserted into the corresponding temperature measuring holes.

[0009] In some other embodiments of the present application, the experimental cylinder 3 is a heat insulation cylinder.

[0010] In the present application, the test is arranged in an experimental cylinder, and the experimental process is not easily affected by the external temperature. Before the experiment, the heating plate (the heating plate has a heating coil) is heated to the required temperature, and the heating plate transmits heat to the heat spreading plate. After the heat spreading plate uniformly spreads the heat on the plate, the heat is transmitted to the heat conducting plate, so that the heat conducting plate uniformly absorbs heat. The change of the heat spreading plate and the heat conducting plate at this time is measured by the two side-by-side temperature sensor assemblies on the left side wall, until the temperature is constant and meets the experimental requirements. The temperature of the heat absorbing plate which is not heated is also measured. In this process, the heat is not transmitted to the heat absorbing plate, but is isolated by the three heat insulation plates. When the experiment starts, the test sample plate is installed and covered with a semicircular flap. The three heat insulation plates are immediately removed. Then, the heat conducting plate and the heat absorbing plate are simultaneously pushed to the test sample plate and hold the test sample plate. At the beginning of holding, the middle three side-by-side temperature sensor assemblies are started to measure the temperature and monitor the conduction heat speed. The experimental precision is high and is not affected by the environmental temperature. BRIEF DESCRIPTION OF DRAWINGS

[0011] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, which together with the embodiments of the present application, serve to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0012] Figure 1 The present application provides a temperature conduction experimental device for thermal metrology.

[0013] Figure 2 The present application provides a temperature conduction experimental device for thermal metrology (semicircular flap is opened).

[0014] Figure 3 The present application provides a temperature conduction experimental device for thermal metrology. Figure 2Enlarged structure schematic view at A.

[0015] Figure 4 Structure schematic view of the internal testing mechanism of the experimental cylinder (not experimental) for the utility model.

[0016] Figure 5 Structure schematic view of the internal testing mechanism of the experimental cylinder (experimental) for the utility model.

[0017] In the figure, 1, bottom plate; 2, base; 3, experimental cylinder; 30, circular template; 301, arc convex strip; 302, top stop column; 31, air inlet pipe; 32, exhaust pipe; 33, semicircular flap; 331, arc plate; 332, arc slot; 4, heat insulation plate; 5, exhaust fan; 6, control box; 7, temperature sensor assembly of experimental process; 71, temperature sensor assembly; 8, heat conduction plate; 80, temperature measuring hole; 81, uniform heating plate; 82, heating plate; 821, sleeve block; 822, limiting sliding rod; 9, heat absorption plate; 91, mounting plate; 10, push rod; 101, limiting sleeve; 102, servo motor. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0019] Examples of the described embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as limiting the utility model.

[0020] Referring to Figures 1-5The utility model provides a kind of thermal metrology temperature conduction experimental device, including bottom plate 1, pedestal 2, experimental cylinder 3, control box 6 and and exhaust fan 5, the pedestal 2 is fixed on bottom plate 1, the experimental cylinder 3 is placed horizontally and partially inlay on pedestal 2, the wall of the middle position of the experimental cylinder 3 is semicircular flip 33, one end of the semicircular flip 33 is rotationally connected with the wall of experimental cylinder 3, two pieces of heat insulation plate 4 are inserted in the left side of semicircular flip 33 of the experimental cylinder 3, and one piece of heat insulation plate 4 is inserted in the right side, the experimental cylinder 3 is equipped with air inlet pipe 31 in right end, and is equipped with exhaust pipe 32 in left end, the air inlet of air inlet pipe 31 is connected with exhaust fan 5, the experimental cylinder 3 is equipped with heating assembly in left half, the experimental cylinder 3 is inserted with test sample plate in the position of semicircular flip 33, the experimental cylinder 3 is equipped with heat absorption assembly in right half, the heating assembly includes heating plate 82, heat plate 81, heat conduction plate 8 and first plate pushing structure, the right side of heating plate 82 is fixedly connected with one side of heat plate 81, the other side of heat plate 81 is fixedly connected with the left side of heat conduction plate 8, the first plate pushing structure includes push rod 10, limiting slide rod 822 and servo motor 102, two set blocks 821 are symmetrically arranged on the annular side wall of heating plate 82, two set blocks 821 are slidably sleeved on a limiting slide rod 822 respectively, the limiting slide rod 822 is connected and installed on the inner wall of experimental cylinder 3 at both ends, a push rod 10 is fixedly connected on the left side wall of heating plate 82, a limiting sleeve 101 is sleeved on the push rod 10, the limiting sleeve 101 is fixed on the inner wall of experimental cylinder 3 by connecting rod, the tail end of push rod 10 is screw-inserted into a lead screw, the rotating shaft of servo motor 102 is connected with one end of lead screw, and servo motor 102 is fixedly installed in experimental cylinder 3, the heat absorption assembly includes heat absorption plate 9, mounting plate 91 and second pushing structure, the mounting plate 91 is fixedly attached to the right side of heat absorption plate 9, the second pushing structure is installed on mounting plate 91, the second pushing structure is same with the first pushing structure in structure and same in installation mode, two side-by-side temperature sensor assemblies 71 are arranged on the side wall of semicircular flip 33 left side of the experimental cylinder 3, three side-by-side temperature sensor assemblies 71 are arranged on the side wall below semicircular flip, and one temperature sensor assembly 71 is arranged on the side wall of semicircular flip 33 right side, control box 6 is installed on bottom plate 1, and the control box 6 is used to control the working of experimental device.

[0021] Before the experiment, first use the exhaust fan to the experimental cylinder 3, so that the heat absorption plate 9 temperature decreases to room temperature (before the experiment, the temperature is not down, start), at this time, the cooling is to take out the heat insulation plate 4, due to the position of the heat insulation plate leaks, plus the internal ventilation of the experimental cylinder, part of the gas will also be discharged from the exhaust pipe, the heating plate 82, the heat plate 81, the heat plate 8 are also cooled, after cooling, insert the heat insulation plate (heat insulation ceramic, or heat insulation plastic and other materials), before the experiment, the heating plate is heated to the required temperature, the heating plate 82 will transfer heat to the heat plate 81, the heat plate 81 (copper plate) will evenly heat the heat plate 81 on its own plate, and then transfer to the heat plate (alloy plate, heat absorption, not easy to deform), which can make the heat plate 8 evenly absorb heat, the change of the heat plate 81 and the heat plate 8 is measured by the two side-by-side temperature sensor assemblies 71 on the left side wall at this time, until the temperature is constant to meet the experimental requirements, and the temperature of the heat absorption plate 9 which is not heated is also measured. The heat is not transferred to the heat absorption plate 9, but is isolated by the three heat insulation plates 4. When the experiment starts, install the test sample plate and cover the semicircular cover 33, immediately remove the three heat insulation plates 4, then immediately push the heat plate 8 and the heat absorption plate 9 to the test sample plate and hold the test sample plate, hold the test sample plate, start the middle three side-by-side temperature sensor assemblies (used at the beginning of the experiment) to monitor the conduction heat speed, and the experimental precision is not affected by the environment temperature.

[0022] The control box is controlled by PLC or computer host (the ammunition is connected with the display screen for operation).

[0023] The experimental cylinder 3 is provided with an arc-shaped plate 331 on the inner wall of the experimental cylinder 3 below the semicircular cover 33, the arc-shaped plate 331 is provided with an arc-shaped groove 332 on the inner side, the test sample plate comprises a circular sample plate 30, an arc-shaped protruding strip 301 and a top abutting column 302, the arc-shaped protruding strip 301 is fixed on the lower half annular wall of the circular sample plate 30, and the top abutting column 302 is fixed on the top annular wall, the arc-shaped protruding strip 301 is just clamped in the arc-shaped groove 332, and the annular wall of the circular sample plate 30 is attached to the arc-shaped plate 331.

[0024] After the circular sample plate 30 is inserted, the arc-shaped protruding strip 301 is just clamped in the arc-shaped groove 332, and then the semicircular cover 33 is covered, and the semicircular cover 33 is just abutted on the top abutting column 302 to press the top abutting column 302.

[0025] The semicircular cover 33 is provided with a bolt on the end of the opening, the end of the arc-shaped plate 331 is provided with a bolt hole, and the experimental cylinder 3 is provided with an opening at the position of the semicircular cover 33, the bolt hole is arranged at the position of the arc-shaped plate 331, and the bolt is screwed in the bolt hole when the semicircular cover 33 is covered.

[0026] The heat insulation plate 4 comprises a large semicircular plate and a small semicircular plate, the large semicircular plate and the small semicircular plate are concentric after splicing, the small semicircular plate is inserted into the experimental cylinder 3 and adheres to the inner wall of the experimental cylinder 3, the large semicircular plate is inserted into the experimental cylinder 3, the annular wall of the large semicircular plate is flush with the outer wall of the experimental cylinder 3, and a pull rod is arranged at the middle position of the annular wall of the large semicircular plate. The splicing can position and will not leak air, and the surface looks more neat.

[0027] The large semicircular plate of the temperature sensor assembly comprises a cylinder and an electronic temperature sensor, the electronic temperature sensor is connected to the telescopic shaft of the cylinder, the vapor chamber 81, the heat conduction plate 8, the test sample plate and the heat absorption plate 9 are provided with temperature measuring holes 80 at the same measuring position and on the same straight line, and the cylinder and the electronic temperature sensor can be inserted into the corresponding temperature measuring hole 80.

[0028] The temperature sensor is inserted into the temperature measuring hole, and the test is more accurate.

[0029] The experimental cylinder 3 is a heat insulation cylinder, and the outer wall is wrapped with heat preservation material.

[0030] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A calorimetric temperature conduction experiment apparatus, characterized by: Including the bottom plate (1), the base (2), the experiment cylinder (3), the control box (6) and and exhaust fan (5), the base (2) is fixed on the bottom plate (1), the experiment cylinder (3) is placed horizontally and partially embedded on the base (2), the wall of the middle position of the experiment cylinder (3) is semicircular flip cover (33), one end of the semicircular flip cover (33) is rotatably connected with the wall of the experiment cylinder (3), two pieces of heat insulation plate (4) are inserted in the left side of the semicircular flip cover (33) of the experiment cylinder (3), and one heat insulation plate (4) is inserted in the right side of the semicircular flip cover (33) of the experiment cylinder (3), the right end of the experiment cylinder (3) is provided with an air inlet pipe (31), and the left end is provided with an exhaust pipe (32), the air inlet pipe (31) is connected with the exhaust fan (5), the left half of the experiment cylinder (3) is provided with a heating assembly, the experiment cylinder (3) is inserted with a test sample plate in the position of the semicircular flip cover (33), the right half of the experiment cylinder (3) is provided with a heat absorption assembly, the heating assembly comprises a heating plate (82), a heat spreading plate (81), a heat conducting plate (8) and a first plate pushing structure, the right side of the heating plate (82) is attached to one side of the heat spreading plate (81) and is fixedly connected, the other side of the heat spreading plate (81) is attached to the left side of the heat conducting plate (8) and is fixedly connected, the first plate pushing structure comprises a push rod (10), a limiting slide rod (822) and a servo motor (102), two sleeve blocks (821) are symmetrically arranged on the annular side wall of the heating plate (82), the two sleeve blocks (821) are respectively slidably sleeved on a limiting slide rod (822), the limiting slide rod (822) is connected and installed on the inner wall of the experiment cylinder (3) through a connecting plate, a push rod (10) is fixedly connected to the left side wall of the heating plate (82), a limiting sleeve (101) is sleeved on the push rod (10), the limiting sleeve (101) is fixed on the inner wall of the experiment cylinder (3) through a connecting rod, the tail end of the push rod (10) is screwed into a lead screw, the rotating shaft of the servo motor (102) is connected with one end of the lead screw, and the servo motor (102) is fixedly installed in the experiment cylinder (3), the heat absorption assembly comprises a heat absorption plate (9), a mounting plate (91) and a second pushing structure, the mounting plate (91) is fixedly attached to the right side of the heat absorption plate (9), the second pushing structure is installed on the mounting plate (91), the second pushing structure is same as the first pushing structure in structure and same as the first pushing structure in installation, two side-by-side temperature sensor assemblies (71) are arranged on the side wall of the left side of the semicircular flip cover (33) of the experiment cylinder (3), three side-by-side temperature sensor assemblies (71) are arranged on the side wall below the semicircular flip cover and one temperature sensor assembly (71) is arranged on the side wall of the right side of the semicircular flip cover (33), the bottom plate (1) is provided with a control box (6), and the control box (6) is used for controlling the working of the experimental device.

2. A thermal metrology temperature conduction experiment apparatus as claimed in claim 1, wherein: The experimental cylinder (3) is pasted with an arc-shaped plate (331) on the inner wall of the experimental cylinder (3) below the semicircular flip cover (33), the inner side of the arc-shaped plate (331) is provided with an arc-shaped groove (332), the test sample plate includes a circular sample plate (30), an arc-shaped protruding strip (301) and a top abutting column (302), the arc-shaped protruding strip (301) is fixed on the lower half annular wall of the circular sample plate (30), the top abutting column (302) is fixed on the top annular wall, the arc-shaped protruding strip (301) is just clamped in the arc-shaped groove (332) and the circular sample plate (30) annular wall is attached to the arc-shaped plate (331).

3. A thermal metrology temperature conduction experiment apparatus as claimed in claim 2, wherein: The semicircular flip cover (33) is provided with a bolt on the opened end, the arc-shaped plate (331) is provided with a bolt hole at the position of the end leaking out of the opening of the experimental cylinder (3) at the position of the semicircular flip cover (33), and the experimental cylinder (3) is screwed in the bolt hole with a bolt when the semicircular flip cover (33) is covered.

4. A thermal metrology temperature conduction experiment apparatus as claimed in claim 1, wherein: The heat insulation plate (4) includes a large semicircle plate and a small semicircle plate, the large semicircle plate and the small semicircle plate are concentric after splicing, the small semicircle plate is inserted into the experimental cylinder (3) and attached to the inner wall of the experimental cylinder (3), the large semicircle plate is inserted into the experimental cylinder (3) and the annular wall of the large semicircle plate is flush with the outer wall of the experimental cylinder (3), and the annular wall of the large semicircle plate is provided with a pull rod at the middle position.

5. A thermal metrology temperature conduction experiment apparatus as claimed in claim 1, wherein: The temperature sensor assembly large semicircle plate includes a cylinder and an electronic temperature sensor, the electronic temperature sensor is connected to the telescopic shaft of the cylinder, the heat evenly plate (81), the heat conduction plate (8), the test sample plate and the heat absorption plate (9) are provided with temperature measuring holes (80) at the same measuring position and on the same straight line, and the cylinder and the electronic temperature sensor are inserted into the corresponding temperature measuring holes (80).

6. A thermal metrology temperature conduction experiment apparatus as claimed in claim 1, wherein: The experimental cylinder (3) is a heat insulation cylinder.

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