A new portable device for measuring heat transfer coefficient on site

Abstract

The utility model proposes a novel portable heat transfer coefficient measuring device, including a foldable heat box, a bracket for supporting the heat box is installed in the heat box, a plurality of wire holes are arranged on the wall of the heat box, an electric heater, a temperature sensor, and a turbulent fan are arranged in the heat box, a data analyzer is arranged outside the heat box, and the connecting wires of the electric heater, the temperature sensor, and the turbulent fan are connected to the data analyzer through the wire holes. The utility model is easy to carry, is not limited by temperature difference, and can adapt to different on-site conditions.

Description

Technical Field

[0001] The utility model belongs to the field of heat conduction measuring equipment, in particular to a novel portable on-site heat transfer coefficient measuring device. Background Art

[0002] With the development of economy, the construction industry, transportation and industrial production have become the three major areas of energy consumption in my country, among which the construction industry is the largest area of ​​energy consumption. How to effectively reduce the energy consumption of buildings and make the construction field develop in the direction of low-carbon energy conservation is an important issue that needs to be solved in my country.

[0003] Among the various factors that affect building energy consumption, the heat transfer characteristics of the building envelope are one of the most important factors. The heat transfer coefficient detection method for building envelopes mainly adopts the hot box method. At present, the existing hot box method equipment has a complex structure and is bulky. It is usually carried out in the laboratory and cannot be tested on site. In addition, the heat flow method used for on-site testing is limited by the temperature difference requirements and can only be tested on-site during the heating season, which cannot meet the testing needs throughout the year. Therefore, there is an urgent need for a heat transfer coefficient field measurement device that is easy to carry, not limited by temperature difference, and can adapt to different field conditions to solve the above problems. Utility Model Content

[0004] In view of the above technical problems, the utility model proposes a novel portable on-site heat transfer coefficient measuring device, which is easy to carry, is not restricted by temperature difference and can adapt to different on-site conditions.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a new portable heat transfer coefficient measuring device, including a foldable hot box, a bracket for supporting the hot box is installed in the hot box, a plurality of wire holes are arranged on the wall of the hot box, an electric heater, a temperature sensor, and a turbulence fan are arranged in the hot box, and a data analyzer is arranged outside the hot box, and the connecting wires of the electric heater, the temperature sensor, and the turbulence fan are connected to the data analyzer through the wire holes.

[0006] Preferably, the heat box is a square body, one side of which is a detection port, and the heat box includes two box plates arranged opposite to each other, which are connected by a soft film.

[0007] Preferably, the bracket includes a fixing frame arranged corresponding to any box board, and both sides of the fixing frame are rotatably connected with a retractable supporting frame, and the supporting frame is supported between the two box boards.

[0008] Preferably, the support frame is arranged in a U shape, and the supporting end of the support frame is retractable.

[0009] Preferably, a heat-insulating layer is detachably connected to the outer surface of the heat box.

[0010] Preferably, a plurality of temperature sensors are provided, and the plurality of temperature sensors are evenly distributed on the inner side surface of the heat box on the side opposite to the detection port.

[0011] Preferably, the electric heater is connected inside the heat box and is located on the bottom surface of the heat box.

[0012] Preferably, the spoiler fans are provided in pairs and are located on both sides of the electric heater, and the air outlets of the spoiler fans are arranged obliquely.

[0013] Preferably, a thermal flow meter is also included. When in use, the thermal flow meter is located in the heat box and connected to the wall. The connecting line of the thermal flow meter is connected to the data analyzer through the wire hole.

[0014] Preferably, it also includes temperature sensors b, c, and d. When in use, the temperature sensor c is connected to the outer wall, and its connecting line is connected to the data analyzer. The temperature sensor b is located in the heat box and connected to the wall. The connecting line of the temperature sensor b is connected to the data analyzer through the wire hole. The temperature sensor d is used to monitor the outdoor temperature and is connected to the data analyzer.

[0015] Preferably, TBA terminals are set on the connecting lines of the electric heater, temperature sensor, turbulence fan, thermal flow meter, temperature sensor b, temperature sensor c, and temperature sensor d. The TBA terminals are located outside the hot box. By removing the TBA terminals, the electric heater, temperature sensor, turbulence fan, thermal flow meter, temperature sensor b, temperature sensor c, and temperature sensor d can be separated from the data analyzer and the test method can be changed.

[0016] Compared with the prior art, the advantages and positive effects of the utility model are: when in use, the foldable heat box can be supported by a bracket, and when not in use, the heat box can be folded for easy carrying. The folding can be achieved by combining the box plate with the soft film, and the soft film of the heat box can ensure its expansion and contraction within a certain range due to its own soft characteristics. The size of the heat box can be adjusted according to the size of the actual test structure on site, and can adapt to a variety of actual test conditions on site. By setting an electric heater, on-site testing can be carried out all year round without being restricted by ambient temperature. The temperature sensors set in the heat box can be removable. The equipment is suitable for on-site exterior walls, exterior windows and other enclosure structures. Heat transfer coefficient testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the structure when the utility model is used;

[0019] Figure 2 It is a front view of the heat box and the insulation layer in the utility model;

[0020] Figure 3 It is a side view of the heat box in the utility model;

[0021] Figure 4 It is a schematic diagram of the support structure in the utility model;

[0022] Figure 5 It is a folding diagram of the heat box in the utility model;

[0023] Figure 6 This is a front view of the hot box equipment of the utility model;

[0024] Figure 7 This is a side view of the hot box equipment of the utility model;

[0025] Figure 8 This is the connection diagram of the sensor TBS of the utility model.

[0026] In the above figures: 0, exterior wall; 1, heat box; 2, bracket; 3, insulation layer; 4, temperature sensor a; 5, temperature sensor b; 6, temperature sensor c; 7, temperature sensor d; 8, spoiler fan; 9, electric heater; 10, thermal flow meter; 11, data analyzer; 12, TBS terminal; 13, fixing bracket; 14, telescopic bracket; 15, box board; 16, soft film. DETAILED DESCRIPTION

[0027] The present invention is described in detail below by way of exemplary embodiments. However, it should be understood that, without further description, elements, structures and features in one embodiment may also be beneficially combined in other embodiments.

[0028] A new portable heat transfer coefficient measuring device, see Figure 1-8 , including a foldable heat box 1. In this embodiment, the foldable heat box 1 is a square body, one side of which is a detection port. The heat box includes two oppositely arranged box boards 15, and the box boards 15 are connected by a soft film 16 to form the heat box 1. The heat box 1 is usually folded by the soft film 16, and the box board 15 is made of flame-retardant material, which is light and small in size and easy to carry. Through the combination of the box board 15 and the soft film 16, it can be folded, and the soft film 16 of the heat box 1 can ensure that it can be stretched within a certain range due to its own soft characteristics, and the size of the heat box can be adjusted according to the size of the actual test structure on site, and can adapt to a variety of actual test conditions on site;

[0029] In order to prevent heat loss, a heat-insulating layer 3 is detachably connected to the outer surface of the heat box 1. The heat-insulating layer 3 may be a heat-insulating board or a heat-insulating felt, and the heat box 1 may be connected to the heat box 1 by a HOOk&LOOP connection, bonding, or the like.

[0030] A bracket 2 for supporting the hot box 1 is installed in the hot box 1. The bracket 2 includes a fixed frame 15 corresponding to any box plate 15. Both sides of the fixed frame 15 are rotatably connected with retractable support frames 16. The support frame 16 is supported between the two box plates 15. In this embodiment, the support frame 16 is U-shaped, and the supporting end of the support frame 16 is retractable. The hot box 1 changes the size of the box body by retracting to adapt to different conditions on site.

[0031] A plurality of wire holes are arranged on the wall of the hot box 1, an electric heater 9, a temperature sensor 4 and a turbulence fan 8 are arranged inside the hot box 1, and a data analyzer 11 is arranged outside the hot box 1, and connecting wires of the electric heater 9, the temperature sensor 4 and the turbulence fan 8 are connected to the data analyzer 11 through the wire holes.

[0032] In this embodiment, a plurality of temperature sensors 4 are provided, and the plurality of temperature sensors 4 are evenly distributed on the inner side of the heat box 1 on the side opposite to the detection port. The average of the test values ​​of the plurality of temperature sensors 4 can effectively eliminate the test error caused by the temperature gradient in the heat box 1, thereby ensuring the test accuracy. The number of the temperature sensors 4 can be determined according to the actual measurement size of the heat box 1;

[0033] In this embodiment, the electric heater 9 is connected to the hot box 1 and is located on the bottom surface of the hot box 1. The electric heater 9 adopts intelligent temperature control to control the constant temperature in the hot box 1. Two spoiler fans 8 are provided, located on both sides of the electric heater 9, and the air outlet of the spoiler fan 8 is set obliquely.

[0034] In this embodiment, a thermal flow meter 10 is also included. When in use, the thermal flow meter 10 is located in the heat box 1 and connected to the wall. The connecting line of the thermal flow meter 10 is connected to the data analyzer 11 through the wire hole.

[0035] In this embodiment, it also includes temperature sensor b5, temperature sensor c6, and temperature sensor d7. When in use, temperature sensor c6 is connected to the outer wall 0, and its connecting line is connected to the data analyzer 11. Temperature sensor b5 is located in the heat box and connected to the wall 0. The connecting line of temperature sensor b5 is connected to the data analyzer 11 through the wire hole. Temperature sensor d7 is used to monitor the outdoor temperature and is connected to the data analyzer. It also includes temperature sensor 5 and temperature sensor 6. When in use, temperature sensor 6 is connected to the outer wall 0, and its connecting line is connected to the data analyzer 11. Temperature sensor 5 is located in the heat box 1 and connected to the wall 0. The connecting line of temperature sensor 5 is connected to the data analyzer 11 through the wire hole.

[0036] A TBA terminal 12 is set on the connecting lines of the electric heater 9, the temperature sensor 4, the turbulence fan 8, the heat flow meter 10, the temperature sensor b5, the temperature sensor c6, and the temperature sensor d7. The TBA terminal 12 is located outside the hot box 1. By removing the TBA terminal, the electric heater 9, the temperature sensor 4, the turbulence fan 8, the heat flow meter 10, the temperature sensor b5, the temperature sensor c6, and the temperature sensor d7 can be separated from the data analyzer 11 to change the test method.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A novel portable on-site heat transfer coefficient measuring device, characterized in that: It includes a foldable heat box, which is a square body, one side of which is a detection port, and the heat box includes two box plates arranged opposite to each other, which are connected by a soft film; A support for supporting the hot box is installed in the hot box, and the support includes a fixed frame corresponding to any box plate, and retractable support frames are rotatably connected to both sides of the fixed frame, and the support frame is supported between the two box plates; the support frame is U-shaped, and the support end of the support frame is retractable. A plurality of wire holes are arranged on the wall of the hot box, an electric heater, a temperature sensor, and a spoiler fan are arranged inside the hot box, and a data analyzer is arranged outside the hot box, and the connecting wires of the electric heater, the temperature sensor, and the spoiler fan are connected to the data analyzer through the wire holes; There are multiple temperature sensors, and the multiple temperature sensors are evenly distributed on the inner side of the heat box on the side opposite to the detection port. The electric heater is connected to the heat box and is located on the bottom surface of the heat box. A heat-insulating layer is detachably connected to the outer surface of the heat box; It also includes temperature sensors b, c, and d. When in use, temperature sensor c is connected to the outer wall, and its connecting line is connected to the data analyzer. Temperature sensor b is located in the heat box and connected to the wall. The connecting line of temperature sensor b is connected to the data analyzer through a wire hole. Temperature sensor d is used to monitor the outdoor temperature and is connected to the data analyzer. TBA terminals are set on the connecting lines of the electric heater, temperature sensor, spoiler fan, thermal flow meter, temperature sensor b, temperature sensor c, and temperature sensor d. The TBA terminals are located outside the heat box. By disassembling the TBA terminals, the electric heater, temperature sensor, spoiler fan, thermal flow meter, temperature sensor b, temperature sensor c, and temperature sensor d can be separated from the data analyzer, and the test method can be changed.

2. The novel portable on-site heat transfer coefficient measuring device according to claim 1 is characterized in that: The spoiler fans are provided in pairs and are located on both sides of the electric heater, and the air outlets of the spoiler fans are arranged obliquely.

3. The novel portable on-site heat transfer coefficient measuring device according to claim 1 is characterized in that: It also includes a thermal flow meter. When in use, the thermal flow meter is located in the hot box and connected to the wall. The connecting line of the thermal flow meter is connected to the data analyzer through the wire hole.

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