CN216955816U - Wall heat conductivity testing device - Google Patents
Wall heat conductivity testing device Download PDFInfo
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- CN216955816U CN216955816U CN202123286575.9U CN202123286575U CN216955816U CN 216955816 U CN216955816 U CN 216955816U CN 202123286575 U CN202123286575 U CN 202123286575U CN 216955816 U CN216955816 U CN 216955816U
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Abstract
The utility model discloses a wall heat conductivity testing device which comprises a microcomputer automatic control system, a cold box, a test piece box, a metering box and a protection box, wherein the output end of the protection box is electrically connected with the input ends of a protection box heater and a protection box refrigerator through the microcomputer automatic control system, the output end of the metering box is electrically connected with the input end of the metering box heater through the microcomputer automatic control system, the metering box is also electrically connected with a temperature sensor and a humidity sensor, and the test piece box is electrically connected with the temperature sensor. Has the advantages that: dynamic or steady-state test conditions can be independently input according to requirements, the air temperatures of the cold boxes and the metering boxes on the two sides of the test piece box are intelligently regulated and controlled, monitored test data are transmitted to a computer client to be intelligently analyzed and calculated, huge workload caused by manual analysis and calculation is omitted, the advantages and the disadvantages of the thermal performance of the two wall bodies can be visually compared, test errors can be reduced, and the comparison and analysis accuracy is improved.
Description
Technical Field
The utility model relates to the technical field of building walls, in particular to a wall heat transfer performance testing device.
Background
Heat transfer refers to the transfer of energy due to temperature differences, also known as heat transfer. Known from the second law of thermodynamics, when having the temperature difference to exist, heat just must be followed high temperature and transferred to low temperature department, therefore the heat transfer is the very general transmission phenomenon in nature and engineering technical field, and in the building field, the heat transfer performance coefficient between the wall body also often needs the test, and general testing arrangement is more rigid, and difficult test is accurate, because can't correspond each other at wall body both ends, also appears the error in the aspect of the material and the structure of wall body easily, causes the inaccurate of final result.
An effective solution to the problems in the related art has not been proposed yet.
Disclosure of Invention
The utility model aims to provide a wall heat transfer performance testing device to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a wall body heat conductivity testing arrangement, includes computer automatic control system, cold box, test piece case, batch meter and guard box, the electric connection between the input of guard box output through computer automatic control system and guard box heater and guard box refrigerator, the input electric connection of meter box output through computer automatic control system and batch meter heater, the batch meter still with between temperature sensor and the humidity transducer electric connection, the electric connection between test piece case and the temperature sensor, the electric connection between the input of cold box output through computer automatic control system and cold box heater and cold box refrigerator.
Further, the cold box is electrically connected with a temperature sensor and a humidity sensor.
Furthermore, the microcomputer automatic control system controls the corresponding executive component through 1/0 and D/A conversion by the output signal of the computer.
Further, the metering box is electrically connected with the metering box power sensor.
Further, the cold box is electrically connected with the cold box power sensor.
Further, the protection box is electrically connected with the protection box power sensor.
Compared with the prior art, the utility model has the following beneficial effects: dynamic or steady-state test conditions can be independently input according to requirements, the air temperatures of the cold boxes and the metering boxes on the two sides of the test piece box are intelligently regulated and controlled, monitored test data are transmitted to a computer client to be intelligently analyzed and calculated, huge workload caused by manual analysis and calculation is omitted, the advantages and the disadvantages of the thermal performance of the two wall bodies can be visually compared, test errors can be reduced, and the comparison and analysis accuracy is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic view of a wall heat transfer performance testing device according to an embodiment of the utility model.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, a wall heat conductivity testing device according to an embodiment of the present invention includes a microcomputer automatic control system, a cold box, a test piece box, a metering box and a protection box, wherein an output end of the protection box is electrically connected with an input end of a protection box heater and an input end of a protection box refrigerator through the microcomputer automatic control system, the protection function is to protect 5 walls of the metering box from being affected by a laboratory environment, the unbalanced heat flow in the test piece and the heat flow flowing through the wall of the metering box are minimized by controlling the environmental temperature of the protection box, and the heat flow coefficient flowing through the wall of the metering box can be measured at the same time, an output end of the metering box is electrically connected with the input end of the metering box heater through the microcomputer automatic control system, the metering box is also electrically connected with a temperature sensor and a humidity sensor, the test piece box is electrically connected with the temperature sensor, and the test piece box is used for placing a test piece, and the output end of the cold box is electrically connected with the input ends of the cold box heater and the cold box refrigerator through a microcomputer automatic control system.
According to the scheme of the utility model, the cold box is electrically connected with the temperature sensor and the humidity sensor, the cold box has the function of forming a stable and uniform temperature field with the temperature lower than that of the metering box on the other side of the test piece box so as to form constant temperature difference on two sides of the test piece, the microcomputer automatic control system controls corresponding execution elements through 1/0 and D/A conversion of output signals of a computer to realize the functions of temperature control, calculation, temperature acquisition, test report printing, process curve display and the like, the metering box is electrically connected with the metering box power sensor, the cold box is electrically connected with the cold box power sensor, and the protective box is electrically connected with the protective box power sensor.
When the air temperature of the cold box, the metering box and the protective box reaches a set value, the temperature of each temperature control point is monitored to be kept stable, and the conditions of the one-dimensional stable state are as follows:
after a.4h, if the average air temperature sum of the measuring box and the cold box is obtained by time-by-time measurement, the absolute value of change per hour is not more than 0.1K and 0.3K respectively;
b. the absolute values of the hourly change of the temperature difference delta of the outer wall of the metering box and the hourly change of the temperature difference delta of the inner part and the outer part of the nose cone are respectively not more than 0.1K and 0.3K, and the changes of the temperature and the temperature difference are not unidirectional changes;
c. the power is stable and unchanged within 4 hours before the last sampling, and the power fluctuation is less than 3% of the measured value.
It indicates that the heat transfer process has stabilized.
In conclusion, dynamic or steady-state test conditions can be automatically input according to requirements, the air temperatures of the cold boxes and the metering boxes on the two sides of the test piece box are intelligently regulated and controlled, the monitored test data are transmitted to a computer client to be intelligently analyzed and calculated, huge workload caused by manual analysis and calculation is omitted, the advantages and the disadvantages of the thermal performance of the two wall bodies can be visually compared, test errors can be reduced, and the comparison and analysis accuracy is improved.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a wall body heat conductivity testing arrangement, its characterized in that, includes computer automatic control system, cold box, test piece case, batch meter and guard box, the electric connection between the guard box output passes through computer automatic control system and the input of guard box heater and guard box refrigerator, the input electric connection of microcomputer automatic control system and batch meter heater is passed through to the batch meter output, the batch meter still with temperature sensor and humidity transducer between the electric connection, electric connection between test piece case and the temperature sensor, the electric connection between the input of cold box output through computer automatic control system and cold box heater and cold box refrigerator.
2. The device for testing the heat transfer property of the wall body as claimed in claim 1, wherein the cold box is electrically connected with a temperature sensor and a humidity sensor.
3. The apparatus of claim 1, wherein the microcomputer control system controls the corresponding actuator via 1/0 and D/A conversion according to the computer output signal.
4. A wall heat transfer performance testing apparatus according to claim 1, wherein the measuring tank is electrically connected with a measuring tank power sensor.
5. The device for testing the heat transfer property of the wall body as claimed in claim 1, wherein the cold box is electrically connected with a cold box power sensor.
6. The device for testing the heat transfer property of the wall body as claimed in claim 1, wherein the protection box is electrically connected with a protection box power sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123286575.9U CN216955816U (en) | 2021-12-24 | 2021-12-24 | Wall heat conductivity testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123286575.9U CN216955816U (en) | 2021-12-24 | 2021-12-24 | Wall heat conductivity testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216955816U true CN216955816U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123286575.9U Active CN216955816U (en) | 2021-12-24 | 2021-12-24 | Wall heat conductivity testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216955816U (en) |
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2021
- 2021-12-24 CN CN202123286575.9U patent/CN216955816U/en active Active
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