Tester for heat conductivity coefficient of flat plate

Abstract

The utility model discloses a flat plate heat conductivity coefficient tester which comprises a box body, a heat conductivity testing mechanism is arranged on the inner side of the box body, the heat conductivity testing mechanism comprises a fixing frame fixedly connected to the bottom of the inner side of the box body, a hydraulic cylinder is fixedly connected to one side of the inner wall of the box body, and a connecting plate is installed at the telescopic end of the hydraulic cylinder. A connecting plate is fixedly connected to one side of the inner wall of the box body, a hot plate is installed at one end of the connecting plate, a fixing rod is fixedly connected to the other side of the inner wall of the box body, a cold plate is installed at one end of the fixing rod, a sliding groove is formed in the upper end of a fixing frame, and a positioning hole is formed in the side, close to the sliding groove, of the upper end of the fixing frame. According to the flat plate heat conductivity coefficient tester disclosed by the utility model, by pulling the pull plate, the pull plate drives the sliding block to slide in the inner side of the sliding groove, so that the sliding block drives the push plate to move, and the push plate further pushes the test plate to move forwards, thereby achieving the purpose of conveniently pushing the test plate out between the hot plate and the cold plate; and the test plate can be conveniently taken down by workers.

Description

Technical Field

[0001] This utility model relates to the field of flat plate thermal conductivity measurement technology, and in particular to a flat plate thermal conductivity measuring instrument. Background Technology

[0002] In the industrial and construction fields, the thermal conductivity of insulation materials is an important parameter used to measure the thermal conductivity and insulation performance of insulation materials. This parameter is measured by a thermal conductivity meter. The testing principle is as follows: first, a heating panel and a cold plate are set up, and a specimen sample is placed in the gap between the cold plate and the heating plate. During the test, the cold plate is pushed towards the heating plate to clamp the specimen sample. Then, the heating panel is heated, and the heat is transferred to the specimen sample and then to the cold plate. The temperature of both the heating panel and the cold plate can be set and adjusted. As time goes by, the temperature of the heating panel and the cold plate no longer changes, and it is a one-dimensional thermal conduction state, from which the thermal conductivity of the specimen sample can be obtained.

[0003] Traditional flat plate thermal conductivity meters have some drawbacks. During the entire testing process, the test plate needs to be placed between a hot plate and a cold plate, and the hot plate needs to move towards the test plate so that it is clamped by the cold plate. The test plate also needs to be removed manually by the worker, which makes the process of removing the test plate very inconvenient. Utility Model Content

[0004] The main objective of this invention is to provide a flat plate thermal conductivity measuring instrument, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A flat plate thermal conductivity measuring instrument includes a housing. A thermal conductivity testing mechanism is disposed inside the housing. The thermal conductivity testing mechanism includes a fixed frame fixedly connected to the bottom of the housing's inner side. A hydraulic cylinder is fixedly connected to one side of the housing's inner wall. A connecting plate is installed at the telescopic end of the hydraulic cylinder. A hot plate is installed at one end of the connecting plate. A fixed rod is fixedly connected to the other side of the housing's inner wall. A cold plate is installed at one end of the fixed rod. A sliding groove is formed at the upper end of the fixed frame. A positioning hole is formed at the upper end of the fixed frame near the sliding groove. A sliding block is slidably connected to the inner side of the sliding groove. A push plate is fixedly connected to the upper end of the sliding block. A pull plate is fixedly connected to the lower end of the sliding block. An insert block is slidably connected to the inner side of the positioning hole. A limit rod is fixedly connected to the upper end of the insert block.

[0007] Preferably, a pull ring is fixedly connected to the front end of the pull plate, and the lower end of the connecting plate is in contact with the upper end of the fixing frame.

[0008] Preferably, the hot plate and the cold plate are opposite each other, with the cold plate located above the fixed frame.

[0009] Preferably, the push plate is in contact with the fixed frame, and the limiting rod is in correspondence with the connecting plate.

[0010] Preferably, a base is fixedly connected to the lower end of the housing, a support leg is fixedly connected to the lower end of the base, and a door cover is movably connected to the inner side of the housing near the front side of the thermal conductivity testing mechanism via a rotating shaft.

[0011] Preferably, a door handle is fixedly connected to the front end of the door cover, and there are four sets of support legs, which are distributed at the four corners of the lower end of the base.

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

[0013] 1. By pulling the pull plate, the pull plate causes the sliding block to slide inside the sliding groove, which in turn causes the sliding block to move the push plate, which in turn pushes the test plate forward. This makes it easier to push the test plate out from between the hot plate and the cold plate, and thus makes it easier for workers to remove the test plate.

[0014] 2. Next, by inserting the insert block into a set of positioning holes according to the thickness of the test plate, the distance from the limiting rod to the cold plate is equal to the thickness of the test plate. The hydraulic cylinder is activated to push the connecting plate to move and to make the hot plate contact the test plate. This allows the connecting plate to contact the limiting rod at the same time, thus limiting the movement distance of the connecting plate and preventing the hot plate and cold plate from excessively clamping the test plate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a flat plate thermal conductivity measuring instrument according to the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the overall structure of a flat plate thermal conductivity measuring instrument according to the present invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the thermal conductivity testing mechanism of a flat plate thermal conductivity measuring instrument according to the present invention. Figure 1 ;

[0018] Figure 4 This is a schematic diagram of the thermal conductivity testing mechanism of a flat plate thermal conductivity measuring instrument according to the present invention. Figure 2 ;

[0019] Figure 5 This is a partial structural diagram of the thermal conductivity testing mechanism of a flat plate thermal conductivity measuring instrument according to the present invention.

[0020] In the diagram: 1. Box body; 2. Base; 3. Support leg; 4. Door cover; 5. Door handle; 6. Thermal conductivity testing mechanism; 61. Fixing frame; 62. Hydraulic cylinder; 63. Connecting plate; 64. Hot plate; 65. Fixing rod; 66. Cold plate; 67. Sliding groove; 68. Positioning hole; 69. Sliding block; 610. Push plate; 611. Pull plate; 612. Pull ring; 613. Insert block; 614. Limiting rod. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] like Figure 1-5 As shown, a flat plate thermal conductivity measuring instrument includes a housing 1. A thermal conductivity testing mechanism 6 is provided inside the housing 1. The thermal conductivity testing mechanism 6 includes a fixed frame 61 fixedly connected to the bottom of the inner side of the housing 1. A hydraulic cylinder 62 is fixedly connected to one side of the inner wall of the housing 1. A connecting plate 63 is installed at the telescopic end of the hydraulic cylinder 62. A hot plate 64 is installed at one end of the connecting plate 63. A fixed rod 65 is fixedly connected to the other side of the inner wall of the housing 1. A cold plate 66 is installed at one end of the fixed rod 65. A sliding groove 67 is provided at the upper end of the fixed frame 61. A positioning hole 68 is provided at the upper end of the fixed frame 61 near the sliding groove 67. A sliding block 69 is slidably connected to the inner side of the sliding groove 67. A push plate 610 is fixedly connected to the upper end of the sliding block 69. A pull plate 611 is fixedly connected to the lower end of the sliding block 69. An insert block 613 is slidably connected to the inner side of the positioning hole 68. A limit rod 614 is fixedly connected to the upper end of the insert block 613.

[0023] In this embodiment, a pull ring 612 is fixedly connected to the front end of the pull plate 611, the lower end of the connecting plate 63 is in contact with the upper end of the fixing frame 61, the hot plate 64 and the cold plate 66 are corresponding to each other, the cold plate 66 is located above the fixing frame 61, the push plate 610 is in contact with the fixing frame 61, and the limiting rod 614 is corresponding to the connecting plate 63.

[0024] Specifically, after the measurement is completed, the hydraulic cylinder 62 is activated, causing the connecting plate 63 to move in the opposite direction. Then, the pull ring 612 is pulled, causing the pull ring 612 to move the pull plate 611. The pull plate 611 then moves the push plate 610 within the sliding groove 67, causing the sliding block 69 to move the push plate 610. The push plate 610 then pushes the test plate forward, making it easier for the worker to remove the test plate. By pulling the pull plate 611, the pull plate 611 moves the sliding block 69 within the sliding groove 67, causing the sliding block 69 to move the push plate 610. This push plate 610 then pushes the test plate forward, making it easier to push the test plate out from between the hot plate 64 and the cold plate 66, thus making it easier for the worker to remove the test plate.

[0025] In this embodiment, a base 2 is fixedly connected to the lower end of the housing 1, and a support leg 3 is fixedly connected to the lower end of the base 2. A door cover 4 is movably connected to the front side of the inner side of the housing 1 near the thermal conductivity testing mechanism 6 via a pivot. A door handle 5 is fixedly connected to the front end of the door cover 4. There are four sets of support legs 3, and the four sets of support legs 3 are distributed at the four corners of the lower end of the base 2.

[0026] Specifically, pull the door handle 5 to rotate the door cover 4 outward from the inside of the housing 1. Then, according to the thickness of the test plate, insert the insert 613 into a set of positioning holes 68 so that the distance between the limiting rod 614 and the cold plate 66 is the thickness of the test plate. Then, place the test plate on the fixing frame 61 and make the test plate fit against the cold plate 66 and the limiting rod 614. Then, close the door cover 4 and start the hydraulic cylinder 62 to push the connecting plate 63 to move and make the hot plate 64 contact the test plate. At the same time, the connecting plate 63 contacts the limiting rod 614, so that the limiting rod 614 limits the movement distance of the connecting plate 63, thereby preventing the hot plate 64 and the cold plate 66 from excessively clamping the test plate. Then, start the hot plate 64 to heat the test plate, so that the cold plate 66 can feel the heat emitted by the hot plate 64 through the test plate, thereby measuring the thermal conductivity of the test plate.

[0027] Working principle:

[0028] In use, the worker first pulls the door handle 5, causing the door cover 4 to rotate outward from the inside of the housing 1. Then, according to the thickness of the test plate, the insert block 613 is inserted into a designated set of positioning holes 68, so that the distance between the limiting rod 614 and the cold plate 66 is the thickness of the test plate. Then, the test plate is placed on the fixing frame 61, ensuring that the test plate is in contact with the cold plate 66 and the limiting rod 614. Then, the door cover 4 is closed, and the hydraulic cylinder 62 is activated, causing the hydraulic cylinder 62 to push the connecting plate 63 to move, and to bring the hot plate 64 into contact with the test plate. At the same time, the connecting plate... When plate 63 contacts limit rod 614, limit rod 614 restricts the movement distance of connecting plate 63, thereby preventing hot plate 64 and cold plate 66 from excessively clamping the test plate. Then, hot plate 64 is activated to heat the test plate, allowing cold plate 66 to feel the heat emitted by hot plate 64 through the test plate, thus measuring the thermal conductivity of the test plate. After the measurement is completed, door cover plate 4 is opened first, then hydraulic cylinder 62 is activated, causing hydraulic cylinder 62 to drive connecting plate 63 to move in the opposite direction. Then, pull ring 612 is pulled, causing pull ring 612 to move... The movement of the pull plate 611, and the sliding of the push plate 610 within the sliding groove 67 caused by the pull plate 611, causes the sliding block 69 to move the push plate 610, which in turn pushes the test plate forward, making it easier for the worker to remove the test plate. Pulling the pull plate 611 causes the sliding block 69 to slide within the sliding groove 67, which in turn moves the push plate 610, which in turn pushes the test plate forward, facilitating the removal of the test plate from between the hot plate 64 and the cold plate 66. The purpose is to facilitate workers to remove the test plate. Secondly, according to the thickness of the test plate, the insert 613 is inserted into a set of positioning holes 68, so that the distance between the limiting rod 614 and the cold plate 66 is the thickness of the test plate. The hydraulic cylinder 62 is activated, so that the hydraulic cylinder 62 pushes the connecting plate 63 to move and the hot plate 64 to contact the test plate. This achieves the purpose of facilitating the connection plate 63 to contact the limiting rod 614 at the same time, so that the limiting rod 614 limits the movement distance of the connecting plate 63, thereby avoiding the hot plate 64 and the cold plate 66 from excessively clamping the test plate.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flat plate thermal conductivity measuring instrument, comprising a housing (1), characterized in that: A thermal conductivity testing mechanism (6) is provided on the inner side of the housing (1). The thermal conductivity testing mechanism (6) includes a fixed frame (61) fixedly connected to the bottom of the inner side of the housing (1). A hydraulic cylinder (62) is fixedly connected to one side of the inner wall of the housing (1). A connecting plate (63) is installed on the telescopic end of the hydraulic cylinder (62). A hot plate (64) is installed on one end of the connecting plate (63). A fixed rod (65) is fixedly connected to the other side of the inner wall of the housing (1). A cold plate (66) is installed on one end of the fixed rod (65). The upper end of the fixed frame (61) is provided with a sliding groove (67), and the upper end of the fixed frame (61) near the sliding groove (67) is provided with a positioning hole (68). A sliding block (69) is slidably connected to the inner side of the sliding groove (67). A push plate (610) is fixedly connected to the upper end of the sliding block (69), and a pull plate (611) is fixedly connected to the lower end of the sliding block (69). An insert (613) is slidably connected to the inner side of the positioning hole (68), and a limit rod (614) is fixedly connected to the upper end of the insert (613).

2. The flat plate thermal conductivity measuring instrument according to claim 1, characterized in that: A pull ring (612) is fixedly connected to the front end of the pull plate (611), and the lower end of the connecting plate (63) is in contact with the upper end of the fixing frame (61).

3. The flat plate thermal conductivity measuring instrument according to claim 2, characterized in that: The hot plate (64) and the cold plate (66) are opposite each other, with the cold plate (66) located above the fixing frame (61).

4. The flat plate thermal conductivity measuring instrument according to claim 2, characterized in that: The push plate (610) is in contact with the fixing frame (61), and the limiting rod (614) corresponds to the connecting plate (63).

5. The flat plate thermal conductivity measuring instrument according to claim 1, characterized in that: The lower end of the housing (1) is fixedly connected to a base (2), and the lower end of the base (2) is fixedly connected to a support leg (3). The inner side of the housing (1) near the front of the thermal conductivity testing mechanism (6) is movably connected to a door cover (4) via a rotating shaft.

6. The flat plate thermal conductivity measuring instrument according to claim 5, characterized in that: The front end of the door cover (4) is fixedly connected to a door handle (5), and there are four sets of support legs (3), which are distributed at the four corners of the lower end of the base (2).

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