Thermal performance detection device for building envelope structure

Abstract

The utility model relates to the technical field of thermal measurement, in particular to a thermal performance detection device for a building envelope structure, which comprises a thermal insulation block body, a heating resistance wire arranged in the thermal insulation groove and far away from a wall surface to be detected, and a temperature sensor arranged in the thermal insulation block body, the heat storage plate is arranged between the heating resistance wire and the wall surface to be detected; the temperature probe is arranged in the heat storage plate; comprising a movable frame, a first fixing rod, a second fixing rod, a tensioning bolt, a reinforcing plate, a first lantern ring, a second lantern ring, a third lantern ring and a fourth lantern ring, wherein the first fixing rod and the second fixing rod are respectively provided with a base, a top seat and a telescopic rod, so that the sealing performance and the applicability of the thermal performance detection device for the building envelope are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal measurement, in particular to a thermal performance detection device for a building enclosure structure. Background Art

[0002] The thermal performance testing of building envelope structures is designed to verify whether the thermal performance of building envelope structures (including exterior walls, roofs, and non-transparent curtain walls) meets the requirements of relevant energy-saving standards, thereby ensuring the building's energy efficiency and energy conservation. Since the building has already been constructed, it is impossible to cut and sample the walls for testing. In particular, testing of the exterior wall envelope must be conducted on-site at the building's wall envelope to be tested.

[0003] Chinese Patent Publication No. CN202631466U discloses a novel heating device for an on-site testing system for the apparent heat transfer coefficient of wall enclosure structures. The device primarily comprises a vapor chamber, a flexible electric heating coil layer, an outer insulation layer, an inner insulation layer, and an electric power regulator. The vapor chamber is positioned in close proximity to the wall surface to be tested, providing uniform heating of the wall. The inner insulation layer is placed around the vapor chamber, between the wall surface and the vapor chamber. The flexible electric heating coil layer is placed on the back of the vapor chamber to heat the vapor chamber. The outer insulation layer is placed on the back of the flexible electric heating coil layer to prevent heat generated by the heating coil from dissipating away from the back. The power supply to the flexible electric heating coil can be adjusted via the electric power regulator. This device is suitable for heating during on-site testing of the apparent heat transfer coefficient of wall enclosure structures. The heating device is lightweight, and the electric heating power is easily adjustable. The number of vapor chambers can be added or reduced based on the actual dimensions of the wall at the testing site. The device is quick to load and unload, making it suitable for transport. It can be seen that the heating device in the technical solution is not firmly supported and is inconvenient to move, thereby reducing the sealing and applicability of the heating device. Summary of the Invention

[0004] To this end, the present invention provides a method for overcoming the problem in the prior art that the heating device is not firmly supported and is inconvenient to move, thereby reducing the accuracy and applicability of the detection device.

[0005] To achieve the above-mentioned purpose, the present invention provides a device for detecting the thermal performance of a building envelope structure, comprising:

[0006] The detection unit includes a thermal insulation block, the thermal insulation block is provided with a thermal insulation groove opening toward the wall to be measured, a heating resistance wire arranged in the thermal insulation groove away from the wall to be measured, a thermal storage plate arranged between the heating resistance wire and the wall to be measured, and a temperature probe arranged inside the thermal storage plate, wherein a preset gap is provided between the thermal storage plate and the wall to be measured;

[0007] The fixing part includes a movable frame, a first fixing rod and a second fixing rod; the movable frame includes a shell for mounting the detection part, a plurality of threaded holes arranged on the shell away from the wall to be tested, a tensioning bolt passing through each threaded hole, a reinforcement plate arranged between the tensioning bolt and the insulation block, and a first ring, a second ring, a third ring and a fourth ring arranged on the outside of the shell, wherein the first ring and the second ring are coaxially arranged, the third ring and the fourth ring are coaxially arranged, and the first fixing rod passes through the first ring and the second ring, and the second fixing rod passes through the third ring and the fourth ring.

[0008] Furthermore, the first fixing rod and the second fixing rod respectively include a base, a top seat and a telescopic rod arranged between the base and the top seat; the base is used to fix the fixing rod on the building ground, and the top seat is used to fix the fixing rod on the top surface of the building; the telescopic rod includes a first rod body and a second rod body, and the first rod body and the second rod body are coaxially threadedly connected, wherein a screw is provided on the first rod body and a threaded hole is provided on the second rod body.

[0009] Furthermore, the heat storage plate is made of cast iron.

[0010] Furthermore, the thermal insulation block is made of high-density polyurethane foam.

[0011] Furthermore, a plurality of pressure sensors are embedded around the open end surface of the heat-insulating block.

[0012] Furthermore, a handle is provided at one end of the tensioning bolt away from the reinforcing plate.

[0013] Furthermore, a clamping head is provided at one end of the tensioning bolt close to the reinforcement plate, and the clamping head is in contact with the reinforcement plate.

[0014] Furthermore, a control module is included to control the temperature of the heating resistance wire.

[0015] Furthermore, it also includes a display module for displaying the detected temperature of the temperature probe and the monitored pressure of each of the pressure sensors.

[0016] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention uniformly heats the heat storage plate by arranging a heating resistance wire, and is provided with an insulation block, which can prevent the heat generated by the resistance wire from being lost from the back, thereby improving the accuracy of the detection, and pushes the reinforcement plate by tightening the bolts to ensure the sealing gap between the heat storage plate and the wall to be tested, and also realizes the movement of the detection device by arranging a telescopic rod, thereby improving the accuracy and applicability of the detection device.

[0017] Furthermore, the present invention enables the device to adapt to walls to be tested of different sizes and positions by providing a movable frame, a first fixing rod and a second fixing rod, thereby improving the versatility of the detection device.

[0018] Furthermore, the utility model is provided with a tensioning bolt that is rotated by a handle, so that the tensioning bolt moves and extends in the axial direction, drives the movement of the clamping head, and then pushes the reinforcement plate to clamp the detection part, thereby improving the sealing of the detection device.

[0019] Furthermore, the present invention adjusts the pressing force by rotating the handle, which does not require an additional driving device, thereby improving the adaptability of the detection device.

[0020] Furthermore, the present invention realizes real-time monitoring of the sealing state by providing a pressure sensor.

[0021] Furthermore, the utility model provides a plurality of threaded holes on the shell away from the wall to be measured and tensioning bolts passing through each threaded hole. When the first fixing rod or the second fixing rod is tilted, a gap appears between the open end surface of the insulation block and the wall to be measured. By controlling the hand wheel to adjust the extension length of the push rod, the gap is eliminated, thereby improving the accuracy of the detection device.

[0022] Furthermore, the present invention can conveniently move and adjust the position of the heating detection device by providing the first fixing rod and the second fixing rod, thereby improving the applicability of the detection device.

[0023] Furthermore, the utility model enhances the accuracy of sealing detection by arranging a pressure sensor embedded in the open end surface of the thermal insulation block. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic cross-sectional view of a device for detecting thermal performance of a building envelope structure according to an embodiment of the present utility model;

[0025] Figure 2 This is a structural diagram of the connection between the mobile frame and the first fixed rod and the second fixed rod according to an embodiment of the utility model;

[0026] Figure 3 This is a cross-sectional view of a telescopic rod according to an embodiment of the present utility model;

[0027] Figure 4 This is a schematic diagram of the circuit connection of the thermal performance detection device for building envelope structures according to an embodiment of the utility model;

[0028] In the figure, 11, insulation block; 12, heating resistance wire; 13, heat storage plate; 14, temperature probe; 15, pressure sensor; 16, control module; 17, display module; 18, mobile frame; 181, shell; 1811, threaded hole; 19, tensioning bolt; 191, handle; 192, clamping head; 20, reinforcement plate; 21, first ring; 22, second ring; 23, third ring; 24, fourth ring; 25, base; 26, top seat; 27, telescopic rod; 271, first rod body; 272, second rod body. DETAILED DESCRIPTION

[0029] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the embodiments described below are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0030] It should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0031] In the description of the present invention, “a plurality of” means at least two, such as two, three, etc., unless otherwise clearly defined.

[0032] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on the specific circumstances.

[0033] See also Figure 1-4 , which are respectively a schematic diagram of the cross-sectional structure of the thermal performance detection device for the building envelope structure according to an embodiment of the utility model; a schematic diagram of the structure of the connection between the movable frame and the first fixed rod and the second fixed rod according to an embodiment of the utility model; a cross-sectional view of the telescopic rod according to an embodiment of the utility model; and a schematic diagram of the circuit connection of the thermal performance detection device for the building envelope structure according to an embodiment of the utility model.

[0034] An embodiment of the present invention provides a device for detecting thermal performance of a building envelope structure, comprising:

[0035] The detection unit includes an insulation block 11, the insulation block 11 is provided with an insulation groove opening toward the wall to be measured, a heating resistor 12 arranged in the insulation groove away from the wall to be measured, a heat storage plate 13 arranged between the heating resistor 12 and the wall to be measured, and a temperature probe 14 arranged inside the heat storage plate 13, wherein a preset gap of 10 mm is set between the heat storage plate 13 and the wall to be measured;

[0036] The fixing part includes a mobile frame 18, a first fixing rod and a second fixing rod; the mobile frame 18 includes a housing 181 for mounting the detection unit, a plurality of threaded holes 1811 provided on the housing 181 away from the wall to be detected, and a tensioning bolt 19 passing through each threaded hole 1811.

[0037] A reinforcing plate 20 is arranged between the tensioning bolt 19 and the insulation block 11, and a first ring 21, a second ring 22, a third ring 23 and a fourth ring 24 are arranged on the outside of the shell 181, wherein the first ring 21 and the second ring 22 are coaxially arranged, the third ring 23 and the fourth ring 24 are coaxially arranged, and the first fixing rod passes through the first ring 21 and the second ring 22, and the second fixing rod passes through the third ring 23 and the fourth ring 24.

[0038] Specifically, the first fixing rod and the second fixing rod respectively include a base 25, a top seat 26 and a telescopic rod 27 arranged between the base 25 and the top seat 26; the base 25 is used to fix the fixing rod on the building ground, and the top seat 26 is used to fix the fixing rod on the top surface of the building; the telescopic rod 27 includes a first rod body 271 and a second rod body 272, and the first rod body 271 and the second rod body 272 are coaxially threadedly connected, wherein a lead screw is provided on the first rod body 271 and a threaded hole 1811 is provided on the second rod body 272.

[0039] Specifically, the heat storage plate 13 is made of cast iron.

[0040] Specifically, the thermal insulation block 11 is made of high-density polyurethane foam.

[0041] Specifically, the thickness of the heat storage plate 13 can be 6 mm, which is not limited to a specific thickness and only needs to meet the requirements of the wall thermal performance test.

[0042] Specifically, a plurality of pressure sensors 15 are embedded around the open end surface of the insulation block 11. This arrangement ensures that when the open end surface of the insulation block 11 first contacts the wall to be measured, the pressure sensors 15 do not change in value. However, when the open end of the insulation block 11 presses against the wall to be measured, the pressure sensors 15 begin to operate, ensuring close contact between the open end surface of the insulation block 11 and the wall to be measured, thereby preventing heat from being transferred to the external environment through the gap between the open end of the insulation block 11 and the wall to be measured.

[0043] Specifically, a handle 191 is provided at one end of the tensioning bolt 19 away from the reinforcing plate 20 .

[0044] Specifically, a pressing head 192 is provided at one end of the tensioning bolt 19 close to the reinforcing plate 20 , and the pressing head 192 is in contact with the reinforcing plate 20 .

[0045] Specifically, it also includes a control module 16 for controlling the temperature of the heating resistance wire 12. It can be understood that the specific structure of the control module 16 is not limited, and it itself and each unit therein can be composed of logic components, which include field programmable components, computers or microprocessors in computers; the control range of the temperature of the heating resistance wire 12 is between 50°C and 100°C.

[0046] Specifically, it also includes a display module 17 for displaying the detected temperature of the temperature probe 14 and the monitored pressure of each of the pressure sensors 15. It can be understood that the display module 17 of this embodiment can be a liquid crystal display, a light-emitting diode display or a touch screen display, and is not specifically limited. It only needs to clearly display the data collected by the temperature probe 14 and the pressure sensor 15.

[0047] Combine the various parts of the detection device together, adjust the position of the movable frame 18 by the first fixing rod and the second fixing rod, place the detection part on the shell 181 on the wall to be tested, and turn the handle 191 according to the monitoring pressure displayed by the display module 17 to move and extend the tensioning bolt 19 in the axial direction. The clamping head 192 pushes the reinforcement plate 20, so that the open end of the insulation block 11 is squeezed against the wall to be tested, thereby forming a closed space between the heat storage plate 13 and the wall to be tested. The heat generated by the heating resistor 12 is transferred to the wall to be tested through the heat storage plate 13, the insulation block 11 is insulated and heat-insulated, and the temperature change time of the temperature probe 14 is recorded.

[0048] For those skilled in the art, according to the concept of the embodiments of the present invention, there may be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A device for detecting thermal performance of building envelope structures, characterized in that: include: The detection unit includes a thermal insulation block, the thermal insulation block is provided with a thermal insulation groove opening toward the wall to be measured, a heating resistance wire arranged in the thermal insulation groove away from the wall to be measured, a thermal storage plate arranged between the heating resistance wire and the wall to be measured, and a temperature probe arranged inside the thermal storage plate, wherein a preset gap is provided between the thermal storage plate and the wall to be measured; The fixing part includes a movable frame, a first fixing rod and a second fixing rod; the movable frame includes a shell for mounting the detection part, a plurality of threaded holes arranged on the shell away from the wall to be tested, a tensioning bolt passing through each threaded hole, a reinforcement plate arranged between the tensioning bolt and the insulation block, and a first ring, a second ring, a third ring and a fourth ring arranged on the outside of the shell, wherein the first ring and the second ring are coaxially arranged, the third ring and the fourth ring are coaxially arranged, and the first fixing rod passes through the first ring and the second ring, and the second fixing rod passes through the third ring and the fourth ring.

2. The building envelope thermal performance testing device according to claim 1, characterized in that: The first fixing rod and the second fixing rod respectively include a base, a top seat and a telescopic rod arranged between the base and the top seat; the base is used to fix the fixing rod on the building ground, and the top seat is used to fix the fixing rod on the top surface of the building; the telescopic rod includes a first rod body and a second rod body, and the first rod body and the second rod body are coaxially threadedly connected, wherein a screw is provided on the first rod body and a threaded hole is provided on the second rod body.

3. The thermal performance testing device for building envelope structure according to claim 2, characterized in that: The heat storage plate is made of cast iron.

4. The thermal performance testing device for building envelope structure according to claim 3, characterized in that: The thermal insulation block is made of high-density polyurethane foam.

5. The thermal performance testing device for building envelope structure according to claim 4, characterized in that: A plurality of pressure sensors are embedded around the open end surface of the heat-insulating block.

6. The building envelope thermal performance testing device according to claim 5, characterized in that: A handle is provided at one end of the tensioning bolt away from the reinforcing plate.

7. The building envelope thermal performance testing device according to claim 6, characterized in that: A pressing head is provided at one end of the tensioning bolt close to the reinforcing plate, and the pressing head is in contact with the reinforcing plate.

8. The building envelope thermal performance testing device according to claim 7, characterized in that: It also includes a control module for controlling the temperature of the heating resistance wire.

9. The building envelope thermal performance testing device according to claim 8, characterized in that: It also includes a display module for displaying the detected temperature of the temperature probe and the monitored pressure of each of the pressure sensors.

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