A light gypsum plastering layer thermal conductivity tester

Abstract

A kind of heat conductivity coefficient tester of light gypsum plastering layer, including rectangular structure mounting frame, controller is equipped on mounting frame, one suction cup is respectively equipped on the both sides of mounting frame, rectangular structure heating box is equipped in the middle position of mounting frame interior, electric heating wire is equipped in heating box, four rectangular structure support rods are equipped between mounting frame and heating box, one temperature detection box is equipped on each support rod, one temperature sensor is equipped in each temperature detection box.The utility model discloses through being equipped with the hand suction cup in the both sides of mounting frame, can fast, firmly with the whole tester adsorbed and fixed on the gypsum plastering wall surface of construction site, need not cutting sample, realizes to the in situ, nondestructive testing of wall, avoids destroying and guarantees that test result can truly reflect the thermal performance of whole wall surface.

Description

Technical Field

[0001] This utility model belongs to the technical field of thermal conductivity testing equipment for gypsum plaster layers, specifically relating to a thermal conductivity tester for lightweight gypsum plaster layers. Background Technology

[0002] Lightweight gypsum plaster mortar, as a new type of green and environmentally friendly interior wall plastering material, is increasingly widely used in modern buildings due to its advantages such as breathability and moisture regulation, fire resistance and thermal insulation, strong adhesion to the substrate, and high construction efficiency. Its thermal conductivity is one of the key parameters for evaluating the thermal insulation performance of walls, directly affecting building energy consumption and indoor thermal comfort. Therefore, accurate and rapid testing of the thermal conductivity of the gypsum plaster layer at the construction site is crucial for ensuring construction quality and verifying energy-saving effects.

[0003] Currently, the measurement of the thermal conductivity of building materials mainly relies on standard testing methods such as steady-state methods or transient plane heat source methods in laboratories. These methods typically require the use of large, precise, stationary testing equipment, such as protective hot plate apparatus or heat flow meter devices. The samples to be tested need to be cut and taken from the construction site, transported to the laboratory, and processed into standard-sized test blocks before testing can be performed. This traditional testing method has several significant drawbacks: 1. Destructive and unrepresentative: The cutting and sampling process can cause permanent damage to the completed plaster layer, requiring subsequent repairs and increasing costs. Furthermore, the small-sized samples may not fully represent the overall thermal performance of the entire wall surface, especially when there are differences in construction uniformity. 2. Poor timeliness: From sampling, transportation, and laboratory preparation to obtaining the final test results, the process is cumbersome and time-consuming, failing to meet the needs of rapid feedback and immediate control of quality at the construction site. If problems are discovered, they often occur in batches, resulting in high rectification costs. 3. Inability to achieve in-situ testing: Large laboratory equipment cannot be moved and cannot be deployed to the construction site for "in-situ" and "non-destructive" rapid screening of the wall. This makes it difficult for supervisors or contractors to conduct timely and comprehensive quality monitoring of key points in the construction process. Utility Model Content

[0004] This invention provides a thermal conductivity tester for lightweight gypsum plaster layers, aiming to solve the problems of destructiveness, non-representativeness, poor timeliness, and inability to perform in-situ testing in existing laboratory testing methods, and to provide a portable, in-situ, and rapid on-site testing device.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A thermal conductivity tester for lightweight gypsum plaster includes a rectangular mounting frame with a controller on it. Suction cups are located on both sides of the mounting frame. A rectangular heating box with an electric heating wire is located in the center of the mounting frame. Four rectangular support rods are positioned between the mounting frame and the heating box, each with a temperature detection box containing a temperature sensor. A battery compartment is located below the controller.

[0006] The temperature detection box has a horizontally arranged rectangular perforation, and the temperature detection box is slidably mounted on the support rod through the perforation.

[0007] The temperature detection box has a magnetic cover on top, and the bottom of the magnetic cover is perforated at the top.

[0008] The suction cup is a manual suction cup.

[0009] The top of each of the four support rods is equipped with a size scale.

[0010] The temperature sensor inside the temperature detection box is a wireless temperature sensor, and the temperature detection box is equipped with a battery.

[0011] The beneficial effects of this utility model by adopting the above technical solution are: the staff can easily carry the testing instrument to the construction site, fix the installation frame to the gypsum plaster layer with two manual suction cups, so that the heating surface of the heating box and the detection surface of the temperature detection box are in contact with the gypsum plaster layer, and control the heating box to heat the gypsum plaster layer by the controller. By adjusting the four temperature detection boxes on the four support rods to different detection distances, the thermal conductivity of the gypsum plaster layer can be tested on site. The temperature detection box has a magnetic cover on top, with a perforated top. Lifting the magnetic cover allows the temperature detection box to be easily removed and installed on the support rod, making it convenient for staff to place multiple temperature detection boxes on the support rod to carry out temperature detection operations. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the temperature detection box in this utility model.

[0013] Mounting frame 1, controller 2, suction cup 3, heating box 4, support rod 5, temperature detection box 6, magnetic cover 7, battery compartment 8. Detailed Implementation

[0014] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] like Figures 1-3 As shown, a thermal conductivity tester for lightweight gypsum plaster includes a rectangular mounting frame 1, a controller 2 mounted on the mounting frame 1, a suction cup 3 on each side of the mounting frame 1, a rectangular heating box 4 in the middle of the interior of the mounting frame 1, an electric heating wire inside the heating box 4, four rectangular support rods 5 between the mounting frame 1 and the heating box 4, a temperature detection box 6 on each support rod 5, and a temperature sensor inside each temperature detection box 6; a battery compartment 8 is located on the lower side of the controller 2.

[0017] The temperature detection box 6 has a rectangular perforation arranged horizontally, and the temperature detection box 6 is slidably mounted on the support rod 5 through the perforation.

[0018] The temperature detection box 6 has a magnetic cover 7 on the top, and the bottom of the magnetic cover 7 is a perforated top.

[0019] Suction cup 3 is a manual suction cup.

[0020] The tops of all four support rods 5 are equipped with dimensional scale lines.

[0021] The temperature sensor inside temperature detection box 6 is a wireless temperature sensor, and temperature detection box 6 contains a battery. Example

[0022] The staff takes the testing instrument to the construction site, selects a flat and representative plaster wall, and fixes the instrument to it using a manual suction cup, ensuring that the bottom surfaces of the heating box 4 and all temperature detection boxes 6 are in close contact with the wall. Based on testing standards or experience, and referring to the dimensional scale lines on the support rod 5, the four temperature detection boxes 6 are slid to different distances from the center of the heating box 4 (e.g., 10mm, 20mm, 30mm, 40mm). The test program is started via controller 2, and the electric heating wire begins heating at a constant power. The wireless temperature sensors in the four temperature detection boxes 65 synchronously and in real-time record the temperature change data over time at their respective locations and send it to controller 2. Controller 2 uses the recorded multiple sets of time-temperature data and the corresponding heat transfer model (such as a transient line heat source or surface heat source model) to calculate the thermal conductivity of the plaster layer at that location. After the test is completed, the power is turned off, the suction cup 3 is released, and the device can be removed.

[0023] This invention enables in-situ, non-destructive testing. By using manual suction cups on both sides of the mounting frame 1, the entire testing instrument can be quickly and firmly attached to the plaster wall at the construction site without cutting or sampling. This allows for in-situ, non-destructive testing of the wall, avoiding damage and ensuring that the test results accurately reflect the overall thermal performance of the wall.

[0024] With its compact structure and high portability, the entire device is integrated into a single mounting frame 1, making it compact and lightweight. Powered by the built-in battery compartment 8, it eliminates the dependence on large fixed equipment and external power sources. Staff can easily carry it to construction sites on different floors, achieving mobile and portable testing.

[0025] The measurement is accurate and efficient. The plaster layer is locally heated by the heating box 4, and multiple temperature detection boxes 6 that can slide and adjust on the support rod 5 can simultaneously measure the changes in the temperature field at different distances around the heating source. The scale lines on the support rod 5 ensure the accuracy of the distance setting, thus providing multiple sets of reliable data for calculations based on the transient plane heat source principle or heat flow analysis, and realizing rapid and accurate on-site thermal conductivity calculation.

[0026] The temperature detection box 6 slides on the support rod 5 through rectangular perforations and can be easily disassembled and locked in place via the magnetic cover 7 on top. This design allows users to flexibly arrange the number and location of temperature measurement points according to different testing needs (such as plaster layer thickness and expected thermal conductivity range), greatly enhancing the instrument's adaptability to different construction site conditions. The temperature detection box 6, with its wireless temperature sensor and built-in battery, enables wireless data transmission, completely avoiding cumbersome wiring problems on site, making the instrument installation, point placement, and data acquisition process simpler, more efficient, and reducing operational difficulty.

[0027] The controller 2, electric heating wire, temperature sensor and battery used in this utility model are all existing conventional technologies, and their structural features will not be described in detail.

[0028] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thermal conductivity tester for lightweight gypsum plaster layers, comprising a rectangular mounting frame with a controller mounted on the frame, characterized in that: The mounting frame has a suction cup on each side, and a rectangular heating box with an electric heating wire in the middle of the mounting frame. There are four rectangular support rods between the mounting frame and the heating box, and a temperature detection box on each support rod. Each temperature detection box contains a temperature sensor. The controller has a battery compartment on its lower side.

2. The thermal conductivity tester for a lightweight gypsum plaster layer according to claim 1, characterized in that: The temperature detection box has a horizontally arranged rectangular perforation, and the temperature detection box is slidably mounted on the support rod through the perforation.

3. The thermal conductivity tester for a lightweight gypsum plaster layer according to claim 2, characterized in that: The temperature detection box has a magnetic cover on top, and the bottom of the magnetic cover is perforated at the top.

4. The thermal conductivity tester for a lightweight gypsum plaster layer according to claim 3, characterized in that: The suction cup is a manual suction cup.

5. The thermal conductivity tester for a lightweight gypsum plaster layer according to claim 4, characterized in that: The tops of the four support rods are all equipped with dimensional scale lines.

6. The thermal conductivity tester for a lightweight gypsum plaster layer according to claim 5, characterized in that: The temperature sensor inside the temperature detection box is a wireless temperature sensor, and the temperature detection box is equipped with a battery.

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