Heat conductivity coefficient tester for vacuum insulated panel

Abstract

The utility model discloses a heat conductivity coefficient determinator for a vacuum insulated panel, which relates to the technical field of heat conductivity coefficient determinators and comprises a mounting rack, an upper mounting plate is fixedly connected to the middle of the mounting rack, and a lifting mechanism is fixedly mounted on the outer wall of the upper mounting plate and comprises an upper moving plate. The upper moving plate is located under the upper mounting plate, a lead screw is rotationally connected to the upper surface of the upper moving plate, the lead screw penetrates through and extends to the upper surface of the upper mounting plate, a lead screw lifting machine is fixedly mounted on the upper surface of the upper mounting plate, and the lead screw is in threaded connection with the lead screw lifting machine; through the design of the lifting mechanism, the main controller controls the lead screw lifting machine to start, the lead screw drives the hot plate to move downwards through the upper moving plate, the hot plate is made to press a test piece, compared with a traditional manual operation method, automatic operation of the tester is achieved, complexity of manual operation is avoided, and work efficiency is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal conductivity measuring instruments, in particular to a thermal conductivity measuring instrument for vacuum insulation panels. Background Technique

[0002] The thermal conductivity is an important parameter used to measure the thermal conductivity characteristics and heat preservation performance of heat insulation materials and thermal insulation materials. It is an important part of the thermal physical properties of materials, which characterizes the size of the heat conduction ability of materials and has extremely important applications in industrial fields, electronic fields, construction fields, aerospace fields, etc. In order to better reduce energy consumption, save energy and reduce emissions, as well as optimize product design and improve product performance, the data of the thermal physical properties of materials has high guiding significance. Therefore, the research on the measurement method of the thermal conductivity of materials has very important practical significance. At present, the thermal conductivity of vacuum insulation panels is measured by a thermal conductivity measuring instrument for vacuum insulation panels.

[0003] For example, a guarded hot flow meter method thermal conductivity measuring instrument that realizes vacuum insulation and thickness measurement functions is disclosed in the Chinese patent document with the publication number CN102645449A, which records that "the test stack body of the instrument includes a hot plate and a cold plate, among which a heating film is sandwiched between the hot plate and the hot plate fixing seat, and the cold plate has a similar structure to the hot plate". This device can overcome the influence of the environment on the measurement stability through the vacuum chamber. At the same time, it can automatically measure the thickness of the test piece, avoiding the human error caused by manual measurement, and improving the measurement repeatability, accuracy and automation degree of the instrument.

[0004] For another example, a guarded hot flow meter method automatic thermal conductivity measuring instrument is disclosed in the Chinese patent document with the publication number CN103293182B, which records that "the piston rod in the air cylinder of the pneumatic device of the measuring instrument realizes the lifting of the hot plate and the thermal protection furnace of the test stack body. A support sleeve is installed outside the cold plate and the cold plate fixing seat. The heat flux sensor is installed on the lower end surface of the upper support sleeve. The electric signal obtained by the heat flux sensor is transmitted to the control unit for analysis and control, and the control unit is connected to the pneumatic device". This device can avoid being damaged by pressure, can realize the automatic operation of the lifting of the test stack body, avoid the tedious manual operation, and improve the measurement accuracy of the thermal conductivity of heat preservation and thermal insulation materials and the repeatability of instrument measurement.

[0005] However, combined with the existing technology, there are still the following defects or problems: The manual control of the up and down movement of the hot plate adopted in the above-mentioned Material 1 is cumbersome in manual control operation and is prone to errors during use. The above-mentioned Material 2 is another solution of the existing technology, which uses a pneumatic device to control the up and down movement of the hot plate. However, the use of a pneumatic device requires additional devices such as an air compressor, which easily leads to too high production costs and too expensive product prices. Therefore, it is important to independently research and design a thermal conductivity measuring instrument for vacuum insulation panels. Summary of the Utility Model

[0006] The purpose of the present utility model is to solve the deficiencies existing in the prior art, and a thermal conductivity measuring instrument for vacuum insulation panels is proposed.

[0007] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0008] A thermal conductivity measuring instrument for vacuum insulation panels, including a mounting frame, a upper mounting plate is fixedly connected to the middle of the mounting frame, a lifting mechanism is fixedly installed on the outer wall of the upper mounting plate, the lifting mechanism includes an upper moving plate, the upper moving plate is located directly below the upper mounting plate, a lead screw is rotatably connected to the upper surface of the upper moving plate, the lead screw penetrates and extends to the upper surface of the upper mounting plate, a lead screw lift is fixedly installed on the upper surface of the upper mounting plate, the lead screw is threadedly connected to the lead screw lift, a hot plate is fixedly connected to the lower surface of the upper moving plate, a lower mounting plate is fixedly connected to the bottom of the mounting frame, an adjusting mechanism is fixedly installed on the outer wall of the lower mounting plate, and an output end of the adjusting mechanism is fixedly connected to a cold plate, and the cold plate is located directly below the hot plate.

[0009] Preferably, side plates are fixedly connected to the middle of the mounting frame, there are two side plates, the two side plates are respectively located on both sides of the upper mounting plate, a main controller is fixedly installed on the upper surface of the side plate, and the main controller is electrically connected to the lead screw lift.

[0010] Preferably, an upper protective shell is fixedly connected to the outer wall of the top of the mounting frame, a touch screen is fixedly installed on the outer wall of the upper protective shell, a signal lamp is fixedly installed on the outer wall of the upper protective shell, both the touch screen and the signal lamp are electrically connected to the main controller, a lower protective shell is fixedly connected to the outer wall of the bottom of the mounting frame, and the lower protective shell is located outside the cold plate.

[0011] Preferably, legs are fixedly installed on the top of the mounting frame, there are four legs, and the four legs are respectively located at the four corners of the mounting frame.

[0012] Preferably, a protective sleeve is sleeved on the outer wall of the lead screw, the protective sleeve is located between the upper moving plate and the upper mounting plate, the bottom of the protective sleeve is fixedly connected to the upper surface of the upper moving plate, and the top of the upper moving plate is fixedly connected to the lower surface of the upper mounting plate.

[0013] Preferably, sliding sleeves are fixedly installed on the outer wall of the upper mounting plate, sliding rods are slidably sleeved inside the sliding sleeves, the bottom ends of the sliding rods are fixedly connected to the upper surface of the upper moving plate, and there are four groups of both the sliding sleeves and the sliding rods, and the four groups of sliding sleeves and sliding rods are respectively located at the four corners of the upper mounting plate.

[0014] Preferably, the adjusting mechanism includes a threaded sleeve fixedly installed on the lower surface of the lower mounting plate. The inner wall of the threaded sleeve is threadedly connected with a threaded rod. The bottom of the threaded rod is fixedly connected with a turning handle. The top of the threaded rod penetrates and extends to the upper surface of the lower mounting plate. The extended end of the threaded rod is rotatably connected with a lower moving plate, and the upper surface of the lower moving plate is fixedly connected with the lower surface of the cold plate.

[0015] Preferably, there are four sets of the threaded sleeve, the threaded rod and the turning handle, and the four sets of the threaded sleeve, the threaded rod and the turning handle are respectively located at the four corners of the lower mounting plate.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, through the design of the lifting mechanism, the main controller controls the screw jack to start. The screw jack drives the screw rod to move downward, and the screw rod drives the hot plate to move downward through the upper moving plate, so that the hot plate presses the test piece. Compared with the traditional manual operation method, the automatic operation of the measuring instrument is realized, avoiding the tediousness of manual operation and having higher work efficiency.

[0018] 2. In the present invention, through the design of the adjusting mechanism, manually rotate the turning handle. The turning handle drives the threaded rod to rotate, and the threaded rod drives the lower moving plate to move up and down through the threaded sleeve. The cold plate can be driven to move up and down through the lower moving plate, so as to adjust the height of the cold plate, which is convenient for testing test pieces of different thicknesses and improves the application range of the device. Description of the Drawings

[0019] Figure 1 It is a schematic structural view of a thermal conductivity measuring instrument for a vacuum insulation panel of the present invention.

[0020] Figure 2 It is a schematic structural view of the mounting rack, upper mounting plate and lifting mechanism of a thermal conductivity measuring instrument for a vacuum insulation panel of the present invention.

[0021] Figure 3 It is a front view of the mounting rack, upper mounting plate and lifting mechanism of a thermal conductivity measuring instrument for a vacuum insulation panel of the present invention.

[0022] Figure 4 It is a schematic structural view of the mounting rack of a thermal conductivity measuring instrument for a vacuum insulation panel of the present invention.

[0023] Figure 5 It is a schematic structural view of the lifting mechanism of a thermal conductivity measuring instrument for a vacuum insulation panel of the present invention.

[0024] Figure 6 It is a front view of the lifting mechanism of a thermal conductivity measuring instrument for a vacuum insulation panel of the present invention.

[0025] Figure 7 The structural schematic diagram of the adjusting mechanism of a thermal conductivity measuring instrument for a vacuum insulation panel of the present utility model.

[0026] Figure 8 The front view of the adjusting mechanism of a thermal conductivity measuring instrument for a vacuum insulation panel of the present utility model.

[0027] Reference numerals in the figure: 1, mounting frame; 2, upper protective shell; 3, touch screen; 4, signal lamp; 5, support leg; 6, upper mounting plate; 7, lifting mechanism; 701, upper moving plate; 702, lead screw; 703, protective sleeve; 704, sliding sleeve; 705, sliding rod; 8, lower mounting plate; 9, adjusting mechanism; 901, threaded sleeve; 902, threaded rod; 903, lower moving plate; 904, turning handle; 10, side plate; 11, main controller; 12, hot plate; 13, cold plate; 14, lower protective shell. Specific implementation mode

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0029] As shown in the attached Figure 1 to the attached Figure 8 figures:

[0030] A thermal conductivity measuring instrument for a vacuum insulation panel includes a mounting frame 1. The middle part of the mounting frame 1 is fixedly connected with an upper mounting plate 6. The outer wall of the upper mounting plate 6 is fixedly installed with a lifting mechanism 7. The lifting mechanism 7 includes an upper moving plate 701. The upper moving plate 701 is located directly below the upper mounting plate 6. The upper surface of the upper moving plate 701 is rotatably connected with a lead screw 702. The lead screw 702 penetrates and extends to the upper surface of the upper mounting plate 6. The upper surface of the upper mounting plate 6 is fixedly installed with a lead screw elevator [not shown in the figure]. The lead screw 702 is threadedly connected with the lead screw elevator. The lower surface of the upper moving plate 701 is fixedly connected with a hot plate 12. The bottom of the mounting frame 1 is fixedly connected with a lower mounting plate 8. The outer wall of the lower mounting plate 8 is fixedly installed with an adjusting mechanism 9. The output end of the adjusting mechanism 9 is fixedly connected with a cold plate 13. The cold plate 13 is located directly below the hot plate 12.

[0031] As shown in the attached Figure 1 to the attached Figure 3 figures, the middle part of the mounting frame 1 is fixedly connected with side plates 10. There are two side plates 10. The two side plates 10 are respectively located on both sides of the upper mounting plate 6. The upper surface of the side plates 10 is fixedly installed with a main controller 11. The main controller 11 is electrically connected with the lead screw elevator.

[0032] In the above technical solution, the screw jack and the main controller 11 are both conventional products in the prior art. For example, the main controller 11 can use the MSC1211Y5 microprocessor of Texas Instruments (TI) in the United States. The screw jack is a worm and gear screw jack, and its specific model can be the SWL1T screw jack of Dehai Machinery. Moreover, the worm and gear screw jack has a stronger self-locking function stability.

[0033] As shown in the Figure 1 attached drawings, the outer wall of the top of the mounting frame 1 is fixedly connected with an upper protective shell 2. The outer wall of the upper protective shell 2 is fixedly installed with a touch screen 3, and the outer wall of the upper protective shell 2 is fixedly installed with a signal lamp 4. The touch screen 3 and the signal lamp 4 are both electrically connected to the main controller 11. The outer wall of the bottom of the mounting frame 1 is fixedly connected with a lower protective shell 14, and the lower protective shell 14 is located outside the cold plate 13.

[0034] In the above technical solution, the designs of the upper protective shell 2 and the lower protective shell 14 prevent external dust from entering the device, thereby providing better protection for the electronic devices inside the device.

[0035] As shown in the Figure 4 attached drawings, the top of the mounting frame 1 is fixedly installed with legs 5. There are four legs 5, and the four legs 5 are respectively located at the four corners of the mounting frame 1.

[0036] As shown in the Figure 6 attached drawings, a protective sleeve 703 is sleeved on the outer wall of the screw rod 702. The protective sleeve 703 is located between the upper moving plate 701 and the upper mounting plate 6. The bottom of the protective sleeve 703 is fixedly connected to the upper surface of the upper moving plate 701, and the top of the upper moving plate 701 is fixedly connected to the lower surface of the upper mounting plate 6.

[0037] In the above technical solution, the design of the protective sleeve 703 is used to protect the screw rod 702 and prevent dust from accumulating on the outer surface of the screw rod 702.

[0038] As shown in the Figure 5 to the Figure 6 attached drawings, a sliding sleeve 704 is fixedly installed on the outer wall of the upper mounting plate 6. A sliding rod 705 is slidably sleeved inside the sliding sleeve 704. The bottom end of the sliding rod 705 is fixedly connected to the upper surface of the upper moving plate 701. There are four groups of sliding sleeves 704 and sliding rods 705, and the four groups of sliding sleeves 704 and sliding rods 705 are respectively located at the four corners of the upper mounting plate 6.

[0039] In the above technical solution, the sliding sleeves 704 and the sliding rods 705 play a guiding role to prevent the upper moving plate 701 from deviating when moving up and down.

[0040] As shown in the Figure 7 to the Figure 8As shown in the figure, the adjusting mechanism 9 includes a threaded sleeve 901 which is fixedly installed on the lower surface of the lower mounting plate 8. A threaded rod 902 is threadedly connected to the inner wall of the threaded sleeve 901. The bottom of the threaded rod 902 is fixedly connected to a turning handle 904. The top of the threaded rod 902 penetrates and extends to the upper surface of the lower mounting plate 8. The extended end of the threaded rod 902 is rotatably connected to a lower moving plate 903. The upper surface of the lower moving plate 903 is fixedly connected to the lower surface of the cold plate 13. There are four sets of the threaded sleeve 901, the threaded rod 902 and the turning handle 904, and the four sets of the threaded sleeve 901, the threaded rod 902 and the turning handle 904 are respectively located at the four corners of the lower mounting plate 8.

[0041] In the above technical solution, manually rotate the turning handle 904, the turning handle 904 drives the threaded rod 902 to rotate, the threaded rod 902 drives the lower moving plate 903 to move up and down through the threaded sleeve 901, and the cold plate 13 can be driven to move up and down through the lower moving plate 903, so as to adjust the height of the cold plate 13, which is convenient for testing specimens of different thicknesses and improves the application range of the device.

[0042] It is worth mentioning that a locking screw is threadedly connected to the outer wall of the threaded sleeve 901, and the other end of the locking screw contacts the outer wall of the threaded rod 902. The threaded rod 902 is fixed by rotating the locking screw.

[0043] The specific usage mode and function of this embodiment:

[0044] When the present utility model is in use, the power is turned on, and the specimen is installed on the upper surface of the cold plate 13. The screw jack is started through the main controller 11. The screw jack drives the screw rod 702 to move downward, and the screw rod 702 drives the hot plate 12 to move downward through the upper moving plate 701, so that the hot plate 12 presses the specimen tightly.

[0045] Through the cold plate 13, the temperatures of the hot plate 12 and the cold plate 13 are set [set according to material requirements].

[0046] The working principles of the hot plate 12 and the cold plate 13 of the present utility model are the same as those of CN103293182B, and will not be elaborated here.

[0047] After the test is completed, the main controller 11 will automatically save each temperature value. After the test is completed, the screw jack is started through the main controller 11. The screw jack drives the screw rod 702 to move upward, and the screw rod 702 drives the hot plate 12 to move upward through the upper moving plate 701, and the specimen is taken out.

[0048] Please refer to the above structure and process Figures 1 - 8 .

[0049] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, making equivalent substitutions or changes should be covered within the protection scope of the present utility model.

Claims

1. A thermal conductivity measuring instrument for a vacuum insulation panel, comprising a mounting frame (1), characterized in that, A middle part of the mounting frame (1) is fixedly connected with an upper mounting plate (6). An outer wall of the upper mounting plate (6) is fixedly installed with a lifting mechanism (7). The lifting mechanism (7) includes an upper moving plate (701). The upper moving plate (701) is located directly below the upper mounting plate (6). An upper surface of the upper moving plate (701) is rotatably connected with a lead screw (702). The lead screw (702) penetrates and extends to the upper surface of the upper mounting plate (6). An upper surface of the upper mounting plate (6) is fixedly installed with a lead screw lifter. The lead screw (702) is in threaded connection with the lead screw lifter. A lower surface of the upper moving plate (701) is fixedly connected with a hot plate (12). A bottom of the mounting frame (1) is fixedly connected with a lower mounting plate (8). An outer wall of the lower mounting plate (8) is fixedly installed with an adjusting mechanism (9). An output end of the adjusting mechanism (9) is fixedly connected with a cold plate (13). The cold plate (13) is located directly below the hot plate (12).

2. The thermal conductivity measuring instrument for a vacuum insulation panel according to claim 1, wherein Two side plates (10) are fixedly connected to a middle part of the mounting frame (1). The two side plates (10) are respectively located on two sides of the upper mounting plate (6). A main controller (11) is fixedly installed on an upper surface of the side plate (10). The main controller (11) is electrically connected with the lead screw lifter.

3. The thermal conductivity measuring instrument for a vacuum insulation panel according to claim 2, characterized in that, An outer wall of a top of the mounting frame (1) is fixedly connected with an upper protective shell (2). An outer wall of the upper protective shell (2) is fixedly installed with a touch screen (3). An outer wall of the upper protective shell (2) is fixedly installed with a signal lamp (4). The touch screen (3) and the signal lamp (4) are both electrically connected with the main controller (11). An outer wall of a bottom of the mounting frame (1) is fixedly connected with a lower protective shell (14). The lower protective shell (14) is located outside the cold plate (13).

4. The thermal conductivity measuring instrument for a vacuum insulation panel according to claim 1, characterized in that, Four legs (5) are fixedly installed on a top of the mounting frame (1). The four legs (5) are respectively located at four corners of the mounting frame (1).

5. The thermal conductivity measuring instrument for a vacuum insulation panel according to claim 1, characterized in that, A protective sleeve (703) is sleeved on an outer wall of the lead screw (702). The protective sleeve (703) is located between the upper moving plate (701) and the upper mounting plate (6). A bottom of the protective sleeve (703) is fixedly connected with an upper surface of the upper moving plate (701). A top of the upper moving plate (701) is fixedly connected with a lower surface of the upper mounting plate (6).

6. The thermal conductivity measuring instrument for a vacuum insulation panel according to claim 1, characterized in that, A sliding sleeve (704) is fixedly installed on an outer wall of the upper mounting plate (6). A sliding rod (705) is slidably sleeved inside the sliding sleeve (704). A bottom end of the sliding rod (705) is fixedly connected with an upper surface of the upper moving plate (701). The sliding sleeve (704) and the sliding rod (705) are both in four groups. The four groups of the sliding sleeve (704) and the sliding rod (705) are respectively located at four corners of the upper mounting plate (6).

7. The thermal conductivity measuring instrument for a vacuum insulation panel according to claim 1, characterized in that, The adjusting mechanism (9) includes a threaded sleeve (901) fixedly installed on the lower surface of the lower mounting plate (8). A threaded rod (902) is threadedly connected to the inner wall of the threaded sleeve (901). The bottom of the threaded rod (902) is fixedly connected to a turning handle (904). The top of the threaded rod (902) penetrates and extends to the upper surface of the lower mounting plate (8). The extended end of the threaded rod (902) is rotatably connected to a lower moving plate (903), and the upper surface of the lower moving plate (903) is fixedly connected to the lower surface of the cold plate (13).

8. A thermal conductivity measuring instrument for a vacuum insulation panel according to claim 7, characterized in that, The threaded sleeve (901), the threaded rod (902) and the turning handle (904) are all in four groups, and the four groups of the threaded sleeve (901), the threaded rod (902) and the turning handle (904) are respectively located at the four corners of the lower mounting plate (8).

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