CN-122016621-A - Test system for simulating plateau environment in full flow

CN122016621ACN 122016621 ACN122016621 ACN 122016621ACN-122016621-A

Abstract

The invention provides a full-flow simulation plateau environment testing system, which relates to the technical field of building material durability testing and comprises a test box body, wherein a through test cabin and a maintenance cabin are arranged in the test box body, an openable separation structure is arranged between the test cabin and the maintenance cabin, a low-pressure simulation system is arranged at a unit placement area outside the test box body and is communicated with the test cabin and the maintenance cabin and used for controlling air pressure in the test box body, a temperature simulation system comprises a heating module arranged at the maintenance cabin, a refrigerating module arranged at the outer unit placement area and a temperature detection assembly respectively arranged in the test cabin and the maintenance cabin, and the heating module and the refrigerating module are both used for adjusting the temperature in the test box body, and a humidity simulation system is arranged in the maintenance cabin and comprises a humidifying assembly, a dehumidifying assembly and a humidity detection assembly respectively arranged in the test cabin and the maintenance cabin.

Inventors

HU XIANG
BAI TIANWEN
SHI CAIJUN

Assignees

湖南大学

Dates

Publication Date: 20260512
Application Date: 20260228

Claims (10)

1. A full-flow test system for simulating a plateau environment, comprising: the test box comprises a test box body, wherein a test cabin and a maintenance cabin which can be communicated are arranged in the test box body, and an openable separation structure is arranged between the test cabin and the maintenance cabin; the low-pressure simulation system is arranged in a unit placement area outside the box body of the test box and is communicated with the test cabin and the maintenance cabin and used for regulating and controlling the air pressure in the box body of the test box; the temperature simulation system comprises a heating module arranged in the maintenance cabin, a refrigerating module arranged in the external unit placement area and a temperature monitoring assembly respectively arranged in the test cabin and the maintenance cabin, wherein the heating module and the refrigerating module are both used for adjusting the temperature in the test box body; humidity analog system sets up in the maintenance cabin, including humidification subassembly, dehumidification subassembly and arrange the humidity monitoring component in test cabin and maintenance cabin respectively, humidification subassembly, dehumidification subassembly all are used for controlling the humidity in the test box.
2. The full-process simulation plateau environment test system as claimed in claim 1, wherein a test bed is arranged in the test cabin, and the full-process simulation plateau environment test system is further provided with an electric power supply unit and an oxygen supply unit, wherein the test bed can be used for preparing cement paste, mortar, concrete and other building material products, and the electric power supply unit and the oxygen supply unit respectively provide electric power support and oxygen guarantee for test operation in the test cabin.
3. A full-flow simulation plateau environment test system as claimed in claim 1, wherein the internal space of the curing chamber is sized to accommodate curing requirements of cement paste, mortar, concrete and other building material samples, and the building material samples can be accommodated individually or simultaneously for curing.
4. The full-flow simulation plateau environment test system of claim 1, wherein the low-pressure simulation system comprises a compressed air input pipeline, a pressure relief pipeline and a pressure detection device, the compressed air input pipeline and the pressure relief pipeline are both communicated with the test box body, and the pressure detection device is respectively arranged on the compressed air input pipeline and the pressure relief pipeline.
5. The full-flow simulation plateau environment test system according to claim 4, wherein the low-pressure simulation system adjusts the air pressure in the test box body in one or more of compressed air regulation, temperature regulation, vacuumizing and chemical depressurization, and the air pressure detection device is a piston pressure gauge, a digital air pressure sensor or an electromagnetic pressure sensor.
6. The full-flow simulation plateau environment test system of claim 1, wherein the temperature simulation system further comprises a reheating circulation pipeline and a cooling circulation pipeline, the reheating circulation pipeline is communicated with the heating module, the cooling circulation pipeline is communicated with the cooling module, the temperature monitoring assembly is further arranged on the reheating circulation pipeline and the cooling circulation pipeline, the heating mode of the heating module is one or more of resistance heating, infrared heating and microwave heating, and the cooling mode of the cooling module is one or more of liquid nitrogen cooling, compressed air cooling, low-temperature liquid cooling and evaporative cooling.
7. The full-flow simulation plateau environment test system according to claim 1, further comprising a humidity circulation pipeline, wherein the humidity circulation pipeline is respectively communicated with a humidifying component and a dehumidifying component, the humidifying mode of the humidifying component is one or more of steam humidification, spray humidification, wet film humidification and direct water evaporation humidification, the dehumidifying mode of the dehumidifying component is one or more of condensation dehumidification, hygroscopic agent dehumidification, compressed air dehumidification and heat pump dehumidification, and the humidity monitoring device in the humidity monitoring component is a capacitive humidity sensor, a film humidity sensor or a dry and wet ball humidity sensor.
8. The full-flow simulation plateau environment test system of claim 1, wherein the separation structure is a separation door, and a manual pressure valve is arranged in the test cabin and is used for auxiliary regulation and normal pressure recovery of air pressure in the test cabin.
9. The full-flow test system for simulating the plateau environment according to claim 1, wherein the test cabin is provided with a single door which can be opened and closed, building material raw materials and test equipment can be put into the test cabin by opening the single door, when the test is performed, after the single door is closed, the environment parameters in the test box body are adjusted through a low-pressure simulation system, a temperature simulation system and a humidity simulation system, after the parameters are stabilized, the test is started, after the test is finished, the air pressure in the test box body is adjusted to normal pressure, and then the single door is opened.
10. The full-process plateau environment simulation test system according to claim 1, further comprising a central control unit, wherein the low-pressure simulation system, the temperature simulation system and the humidity simulation system are all connected with the central control unit, and the central control unit can receive detection signals of the temperature monitoring component, the humidity monitoring component and the air pressure detection device, regulate and control working states of the low-pressure simulation system, the temperature simulation system and the humidity simulation system according to set plateau environment parameters, so that the environment parameters in the test box body are stabilized in a set range.

Description

Test system for simulating plateau environment in full flow Technical Field The invention relates to the technical field of building material durability test, in particular to a full-flow test system for simulating a plateau environment. Background In the engineering construction of a plateau area, the performances of building materials such as cement paste, mortar, concrete and the like can be obviously changed due to special low-pressure, extreme temperature difference, low humidity and other complex environmental factors of the plateau, and the actual service performance is greatly different from the test result in the plain environment, so that the preparation and hardening maintenance full-flow performance of the building materials in the plateau environment is required to be subjected to accurate simulation test to ensure the safety of an engineering structure; At present, the plateau environment test for building materials is mainly divided into two types, namely an in-situ test and a laboratory simulation, wherein the in-situ test is limited by the natural conditions of the plateau and has the problems of long test period, high cost, uncontrollable parameters and the like, and the laboratory simulation is carried out only for a single environment parameter (such as only simulating low air pressure or single temperature) or continuous environment simulation of material preparation and hardening maintenance is not realized, so that the consistency of a simulation environment and the actual plateau environment is poor; The test data is difficult to truly reflect the performance change rule of the building material under the whole flow of the plateau, and cannot provide reliable basis for performance evaluation and selection of the building material for the plateau engineering Disclosure of Invention Aiming at the defects of the prior art, the invention provides a full-flow test system for simulating the plateau environment. A full-flow simulated plateau environment test system, comprising: the test box comprises a test box body, wherein a test cabin and a maintenance cabin which can be communicated are arranged in the test box body, and an openable separation structure is arranged between the test cabin and the maintenance cabin; The low-pressure simulation system is arranged in a unit placement area outside the box body of the test box and is communicated with the test cabin and the maintenance cabin and used for controlling the air pressure in the box body of the test box; The temperature simulation system comprises a heating module arranged in the maintenance cabin, a refrigerating module arranged in the external unit placement area and a temperature monitoring assembly respectively arranged in the test cabin and the maintenance cabin, wherein the heating module and the refrigerating module are both used for adjusting the temperature in the test box body; humidity analog system sets up in the maintenance cabin, including humidification subassembly, dehumidification subassembly and arrange the humidity monitoring component in test cabin and maintenance cabin respectively, humidification subassembly, dehumidification subassembly all are used for controlling the humidity in the test box. Preferably, the test cabin is internally provided with a test bed, and is also provided with an electric power supply unit and an oxygen supply unit, wherein the test bed can be used for preparing cement paste, mortar, concrete and other building material products, and the electric power supply unit and the oxygen supply unit respectively supply electric power and oxygen for test operation in the test cabin. Preferably, the internal space of the curing cabin is sized to accommodate curing requirements of cement paste, mortar, concrete and other building material samples, and can accommodate the building material samples for curing alone or simultaneously. Preferably, the low-pressure simulation system comprises a compressed air input pipeline, a pressure relief pipeline and a pressure detection device, wherein the compressed air input pipeline and the pressure relief pipeline are communicated with the box body of the test box, and the pressure detection device is respectively arranged on the compressed air input pipeline and the pressure relief pipeline. Preferably, the low-pressure simulation system adjusts the pressure in the test box body in one or more of compressed air regulation, temperature regulation, vacuumizing and chemical depressurization, and the pressure detection device is a piston pressure gauge, a digital pressure sensor or an electromagnetic pressure sensor. Preferably, the temperature simulation system further comprises a reheating circulation pipeline and a cooling circulation pipeline, the reheating circulation pipeline is communicated with the heating module, the cooling circulation pipeline is communicated with the refrigerating module, the temperature detection assembly is further arranged on th