CN216718277U - Detection device for building site heat transfer tester - Google Patents
Detection device for building site heat transfer tester Download PDFInfo
- Publication number
- CN216718277U CN216718277U CN202120498851.9U CN202120498851U CN216718277U CN 216718277 U CN216718277 U CN 216718277U CN 202120498851 U CN202120498851 U CN 202120498851U CN 216718277 U CN216718277 U CN 216718277U
- Authority
- CN
- China
- Prior art keywords
- heat transfer
- plate
- hot plate
- constant temperature
- heat flow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The utility model discloses a detection device for a construction site heat transfer tester, which comprises clamping devices with two symmetrically arranged ends, wherein a hot plate constant temperature device is arranged between the symmetrically arranged clamping devices, a heat flow damping plate and a cold plate constant temperature device are arranged on the upper end surface of the hot plate constant temperature device, and heat insulation materials are arranged on the two sides and the lower end of the hot plate constant temperature device. The utility model has the beneficial effects that: the temperature of the hot plate can be set and controlled within 20-120 ℃, the temperature of the cold plate can be set and controlled within-20-30 ℃, the heating power of the hot plate can be accurately measured when the temperature of the hot plate and the temperature of the cold plate are controlled to be constant, a heat flow damping plate and a heat flow sensor with the thickness of 0.5-3 mm can be clamped, the clamped gap is not more than 0.1 mu m, the heat flow density value of actual heat transfer is calculated through the Fourier heat transfer law, and the accuracy of the heat flow density value can be obtained by comparing the heat flow density value with the indication value of a building heat transfer site tester.
Description
Technical Field
The utility model relates to the technical field of measuring the heat transfer coefficient of a building wall or a material, in particular to a detection device for a building site heat transfer tester.
Background
The on-site measuring instrument for the heat transfer coefficient of the building is a measuring instrument for on-site measurement of the heat transfer coefficient of a building wall or a material, and generally comprises 3-8 temperature sensors, 1-5 heat flow sensors and a collecting and storing instrument, wherein the measuring range is generally the temperature (-40-60) DEG C, the heat flow (0.1-50) W/m2, the accuracy and the stability of the measured value are related to the evaluation of the energy-saving performance of the building, the heat flow sensors are usually installed in an embedded type and a surface-adhered type, and the heat transfer condition of an original heat resistance layer can be destroyed no matter which way is adopted, so that the heat resistance value is changed, the main reasons are that the heat conductivity of the heat flow sensors is inconsistent with the heat conductivity of the material of the measured heat resistance layer and the thickness of the material of the heat resistance layer is changed, so that the temperature field and the heat flow field are distorted, and the original transfer condition is changed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a detection device for a construction site heat transfer tester, so as to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the detection device for the building site heat transfer tester comprises clamping devices, wherein the two ends of each clamping device are symmetrically arranged, a hot plate constant temperature device is symmetrically arranged between the clamping devices, a heat flow damping plate and a cold plate constant temperature device are arranged on the upper end face of the hot plate constant temperature device, and heat insulation materials are arranged on the two sides and the lower end of the hot plate constant temperature device.
Preferably, the hot plate thermostat is composed of a heater and a soaking plate.
Preferably, the cold plate constant temperature device is composed of a circulating refrigeration system and an aluminum plate.
Preferably, the heater uses a 24V adjustable voltage DC power supply.
Preferably, the heat flow damping plate is provided with at least three symmetrical hollow cavities respectively.
Preferably, a standard temperature measuring device is further arranged on the outer side of the clamping device.
Preferably, the standard temperature measuring device is composed of two calibrated and corrected K-type thermocouples and a matched display device.
Preferably, the two calibrated and corrected K-type thermocouples are respectively connected with the soaking plate and the aluminum plate in a sticking manner.
Advantageous effects
According to the detection device for the building site heat transfer determinator, the temperature of the hot plate can be set and controlled within 20-120 ℃, the temperature of the cold plate can be set and controlled within-20-30 ℃, the heating power of the hot plate can be accurately measured when the temperature of the hot plate and the temperature of the cold plate are controlled to be constant, a heat flow damping plate and a heat flow sensor with the thickness of 0.5-3 mm can be clamped, the clamped gap does not exceed 0.1 mu m, the heat flow density value of actual heat transfer is calculated through the Fourier heat transfer law, and the accuracy of the heat flow density value can be obtained by comparing the heat flow density value with the indication value of the building site heat transfer determinator.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the hot plate thermostat of the present invention;
FIG. 3 is a schematic diagram of a heat flow damper plate structure according to the present invention.
Reference numerals
1-clamping device, 2-hot plate constant temperature device, 3-heat flow damping plate, 4-heat insulation material, 5-heater, 6-soaking plate, 7-hollowed hole and 8-cold plate constant temperature device.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Examples
As shown in fig. 1-3, a detection device for a construction site heat transfer tester comprises clamping devices 1, two ends of which are symmetrically arranged, a hot plate thermostat 2 is arranged between the symmetrically arranged clamping devices 1, a heat flow damping plate 3 and a cold plate thermostat 5 are arranged on the upper end face of the hot plate thermostat 2, and heat insulating materials 4 are arranged on two sides and the lower end of the hot plate thermostat 2.
Preferably, the hot plate thermostat 2 is composed of a heater 5 and a soaking plate 6.
Preferably, the cold plate thermostat 5 is formed by a circulating refrigeration system and an aluminum plate.
Preferably, the heater 5 uses a 24V adjustable voltage dc power supply.
Preferably, the heat flow damping plate 3 is provided with at least three symmetrical hollowed holes 7.
Preferably, a standard temperature measuring device is further arranged outside the clamping device 1.
Preferably, the standard temperature measuring device is composed of two calibrated and corrected K-type thermocouples and a matched display device.
Preferably, the two calibrated and corrected K-type thermocouples are respectively connected with the soaking plate 6 and the aluminum plate in a sticking manner.
The specific calibration method of the detection device comprises the following steps:
the temperature sensor of the measuring instrument of the building heat transfer coefficient on-site measuring instrument is disassembled, and is uniformly arranged on a cold plate and a hot plate together with a standard K-type thermocouple, and is firmly stuck by a heat insulation adhesive tape;
a heat flow sensor of a measuring instrument of the on-site measuring instrument for the building heat transfer coefficient is disassembled and vertically installed in a hollow hole of a heat flow damping plate;
and starting the detection device, setting the temperatures of the cold plate and the hot plate, starting the on-site building heat transfer coefficient determinator after the temperatures are stable, reading the temperatures of the cold plate and the hot plate from the standard K-type thermocouple, and calculating the temperature difference T of the cold plate and the hot plate. And reading the heating power W from the detection device, calculating the heat transfer area as S according to the hollow area of the thermal damping plate, and calculating the theoretical heat flow density as W/S.
Is suitable for a constant temperature bath at (-40-60) DEG C and has a vertical temperature field with the depth of more than 200 mm. The uniformity of the constant temperature bath is 0.02 ℃, and the volatility is 0.01 ℃/10 min.
The heat flow loading device can conduct one-dimensional heat flow, the side length of a hot plate is 300-600 mm, the side length of a cold plate is 300-600 mm, and the thickness is 10-20 mm.
The temperature of the hot plate can be set and controlled within (20-120) DEG C, and the temperature of the cold plate can be set and controlled within (20-30) DEG C.
The heat flow loading device can accurately measure the power, and can accurately measure the heating power of the hot plate when the temperature of the hot plate and the cold plate is controlled to be constant.
The heat flow loading device capable of clamping the heat flow damping plate can clamp the heat flow damping plate with the thickness within (0.5-3) mm and the heat flow sensor, and the gap after clamping is not more than 0.1 mu m.
The side length of the heat flow damping plate with good heat flow conduction is (100-600) mm, the middle of the heat flow damping plate is hollowed out to form a cavity with the same size as that of a heat flow sensor to be detected, and the side length of the cavity is (20-200) mm.
Through the Fourier heat transfer law, the heat flow density value of actual heat transfer can be calculated and compared with the indication value of the building heat transfer on-site measuring instrument, and the accuracy of the heat flow density value can be obtained
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall be included in the contents of the present invention within the scope of the protection of the present invention.
Claims (8)
1. A detection device for a construction site heat transfer tester comprises clamping devices (1) with two symmetrical ends, and is characterized in that: the symmetrical hot plate constant temperature device (2) is arranged between the clamping devices (1), the upper end face of the hot plate constant temperature device (2) is provided with a heat flow damping plate (3) and a cold plate constant temperature device (8), and the two sides and the lower end of the hot plate constant temperature device (2) are both provided with heat insulation materials (4).
2. The inspection device for a construction site heat transfer tester as claimed in claim 1, wherein: the hot plate constant temperature device (2) is composed of a heater (5) and a soaking plate (6).
3. The inspection device for a construction site heat transfer tester as claimed in claim 1, wherein: the cold plate constant temperature device (8) is composed of a circulating refrigeration system and an aluminum plate.
4. The inspection device for a construction site heat transfer tester as claimed in claim 2, wherein: the heater (5) uses a 24V adjustable voltage direct current power supply.
5. The inspection device for a construction site heat transfer tester as claimed in claim 1, wherein: the heat flow damping plate (3) is provided with at least three symmetrical hollow cavities (7) respectively.
6. The inspection device for a construction site heat transfer tester as claimed in claim 2, wherein: and a standard temperature measuring device is also arranged on the outer side of the clamping device (1).
7. The detecting device for the construction site heat transfer tester as claimed in claim 6, wherein: the standard temperature measuring device consists of two calibrated and corrected K-type thermocouples and a matched display device.
8. The detecting device for the construction site heat transfer tester as claimed in claim 7, wherein: and the two calibrated and corrected K-type thermocouples are respectively connected with the soaking plate (6) and the aluminum plate in a sticking way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120498851.9U CN216718277U (en) | 2021-03-09 | 2021-03-09 | Detection device for building site heat transfer tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120498851.9U CN216718277U (en) | 2021-03-09 | 2021-03-09 | Detection device for building site heat transfer tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216718277U true CN216718277U (en) | 2022-06-10 |
Family
ID=81871409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120498851.9U Active CN216718277U (en) | 2021-03-09 | 2021-03-09 | Detection device for building site heat transfer tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216718277U (en) |
-
2021
- 2021-03-09 CN CN202120498851.9U patent/CN216718277U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201503406U (en) | Improved flat plate instrument for testing thermal performance of fabric | |
| CN108490024B (en) | Method for measuring heterogeneous content of limited-thickness material based on virtual heat source principle | |
| CN201852743U (en) | Moderate-temperature stretching stress relaxation testing machine for pre-stressed rolled steel | |
| CN113092523B (en) | Device and method for testing heat conduction performance of film material | |
| CN106770447B (en) | Device and method for measuring heat conductivity coefficients of asphalt mixture at different temperatures | |
| CN108333215B (en) | A kind of analysis of thermal conductivity method of aerogel heat-proof layer in integral type T PS | |
| CN104267060A (en) | Method for measuring heat conductivity of active heat-protection type calorimeter by virtue of quasi-steady-state method and correction method of active heat-protection type calorimeter | |
| CN114791325A (en) | Heat flow calibration method for testing ground thermal strength cabin of aerospace plane | |
| CN216718277U (en) | Detection device for building site heat transfer tester | |
| CN108195879A (en) | The method that Transient Method measures material thermal conductivity and thermal diffusion coefficient | |
| CN106645284B (en) | Circular tube material heat conductivity coefficient measuring system and measuring method thereof | |
| CN201163271Y (en) | Thermal resistance series connection type heat transfer coefficient on-site detection system | |
| CN109738092B (en) | Bidirectional thermopile type thin film heat flowmeter and heat flow measuring method | |
| CN107894440B (en) | Concrete thermal expansion coefficient measuring device and measuring method | |
| CN104749214A (en) | Transient plane source method-based constant-temperature heating bath device for measuring liquid thermal conductivity | |
| CN203849193U (en) | Indoor rock sample heat conduction coefficient testing device | |
| CN110849929B (en) | Method for monitoring release state of sensor with suspension structure | |
| CN107741436A (en) | Method of the water-bath against the thermal conductivity factor under different vacuums inside vacuum measurement VIP | |
| Rennex | Error analysis for the national bureau of standards 1016 mm guarded hot plate | |
| CN103245692B (en) | Steady-state analysis-based method for measuring hemispherical total emissivity and heat conduction coefficient | |
| CN113252724B (en) | Method for detecting heat preservation performance of external wall | |
| Rabin et al. | Infrared temperature sensing of mechanically loaded specimens: thermal analysis | |
| CN103529073B (en) | A kind of asymmetric hot plate instrument | |
| CN209589899U (en) | A kind of measuring device of pipe surface heat transfer coefficient | |
| CN103267772B (en) | Transient analysis-based hemispherical total emittance measurement method for large-temperature difference sample |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |