Salt mist box

Abstract

The invention discloses a salt mist box, and belongs to the technical field of service performance tests of cement-based materials in a marine environment. The salt mist box comprises a box body, wherein the internal space of the box body is divided into an upper chamber and a lower chamber by a fixedly arranged sample rack; the salt mist box further comprises an ultraviolet light source located in the upper cavity and a salt water chamber located in the lower cavity and is provided with a spray tower. Wherein the sample rack is provided with a loading device, and the loading device is used for placing a sample and applying pressure to the sample. The salt mist box can simulate various environmental conditions, so that the service life and the performance change of a material can be predicted more accurately.

Description

Technical Field

[0001] The present application belongs to the technical field of service performance testing of cement-based materials in a marine environment, and specifically relates to a salt spray chamber capable of simulating the coupling of load effects and ultraviolet environmental factors. Background Art

[0002] In various land engineering and marine engineering projects, a large amount of cement-based materials are needed to build structures. However, cement-based materials have poor toughness and crack resistance. In the long-term use process, cement-based materials are not indestructible. In addition to their own problems, cement-based materials will also be damaged by the natural environment, loads, etc., which reduces their performance, causes damage and failure of engineering structures, and even causes catastrophic accidents.

[0003] The marine environment is characterized by high humidity, high temperature, high salt and high radiation. Cement-based materials serving in the marine environment will be affected by a variety of environmental factors such as salt spray, tides, and seawater splash, and the concrete materials of components such as beams and columns will be affected by the load of the superstructure.

[0004] Existing testing equipment is unable to conduct salt spray corrosion tests and ultraviolet aging tests on cement-based materials at the same time, and often requires the use of salt spray chambers and ultraviolet aging chambers for separate testing. Summary of the invention

[0005] The purpose of the present invention is to provide a salt spray chamber that can simulate the coupling of load action and ultraviolet environmental factors, thereby solving the problem that it is impossible to simultaneously conduct salt spray corrosion tests and ultraviolet aging tests on cement-based materials. At the same time, the salt spray chamber can apply a long-term static load of a certain intensity to achieve high efficiency, accuracy and consistency with actual test content.

[0006] The solution of this application example is implemented through the following contents.

[0007] A salt spray chamber comprises: The box body has an internal space divided into an upper chamber and a lower chamber by a fixed sample rack, and the sample rack is provided with a loading device, which is used to place the sample and apply pressure to the sample; An ultraviolet light source located in the upper chamber is used to generate ultraviolet light to irradiate the sample fixed to the loading device; The salt water chamber located in the lower chamber is provided with a spray tower for spraying salt mist toward the sample fixed to the loading device.

[0008] Optionally, the light source has a direction adjustment mechanism that can adjust the angle of the ultraviolet rays toward the loading device.

[0009] Optionally, the light source includes: a direction adjustment mechanism and an ultraviolet lamp tube; The orientation adjustment mechanism is connected to the upper chamber, and the ultraviolet lamp tube is connected to the orientation adjustment mechanism.

[0010] Optionally, the orientation adjustment mechanism includes a fixed rod, a telescopic rod and a lamp tube holder; The fixed rod and the telescopic rod are arranged to extend in the same direction, and the two ends of the fixed rod are respectively connected to the upper chamber and the lamp tube frame, and the two ends of the telescopic rod are respectively connected to the upper chamber and the lamp tube frame; The lamp tube frame is hinged to the fixed rod, and the lamp tube frame is hinged to the telescopic rod.

[0011] Optionally, the salt spray chamber further comprises a heating tube disposed inside the chamber for adjusting the temperature inside the chamber.

[0012] Optionally, the salt spray box also includes an operating table, and the salt spray box also includes a temperature sensor, and the heating tube and the temperature sensor are respectively connected to a control system in the operating table.

[0013] Optionally, the loading device includes a placement component and a pressurizing component that match each other, the placement component is used to place the sample, and the pressurizing component is used to apply pressure to the sample placed on the placement component.

[0014] Optionally, the placement component is provided with opposing guide rails, the pressurizing component includes two loading plates and multiple screws, the loading plates include an integrally formed vertical plate and a horizontal plate, the vertical plate is used to contact and squeeze the sample, the two loading plates are respectively connected to the screws through threaded holes set on the vertical plates, and the horizontal plate is provided with a slide groove, and the guide rails are slidably matched with the horizontal plate through the slide groove.

[0015] Optionally, the salt spray chamber further includes an operating table, and the salt spray chamber further includes a pressure sensor arranged on the vertical plate, and the pressure sensor is connected to a control system in the operating table.

[0016] Optionally, a conical disperser is provided on the top of the spray tower, and the spray is sprayed out through the conical disperser.

[0017] Beneficial effects: The salt spray chamber provided in the present application can combine the salt spray and ultraviolet tests together, and at the same time, based on the loading device, apply the long-term static load existing in actual engineering to the specimen, so as to achieve the efficiency, accuracy and consistency of the test content with the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For a clearer explanation, the following briefly introduces the drawings required for the description.

[0019] Figure 1 1 is an external structural diagram of a salt spray chamber for simulating the coupling of load action and ultraviolet environmental factors in an embodiment of the present invention; Figure 2 is a cross-sectional view of a salt spray chamber in an embodiment of the present invention; Figure 3 is a rear view of an embodiment of the present invention; Figure 4 is a cross-sectional view of an operating table in an embodiment of the present invention; Figure 5 is an internal top view of the salt spray box in an embodiment of the present invention; Figure 6 Detailed structural diagram of the salt spray generator in the embodiment of the present invention; Figure 7 is a specific structural diagram of a loading device in an embodiment of the present invention; Figure 8 It is a partial enlarged view of the salt spray chamber control system in an embodiment of the present invention.

[0020] Description of reference numerals: 1-base, 2-universal wheels, 3-box, 4-box cover, 5-opening, 6-single door, 7-observation window, 8-electric telescopic rod; 9-operating table, 10-control system, 11-dust cover, 12-salt water chamber top cover, 13-power switch; 14-laboratory water level indicator, 15-salt water room water level indicator, 16-pressure tank water level indicator; 17-lift control key, 18-telescopic control key, 19-spray control key, 20-brightness control knob; 21-pressure barrel air pressure instrument panel, 22-spray air pressure instrument panel, 23-test room water temperature display, 24-salt water room water temperature display, 25-pressure barrel water temperature display, 26-radiation intensity display; 27-pressure barrel water filling pipe, 28-pressure barrel drain pipe, 29-salt water delivery pipe protective sleeve, 30-salt water tank drain pipe, 31-test room drain pipe, 32-test room automatic overflow pipe, 33-test room sensor, 34-test room heating pipe; 35- brine tank, 36- spray tower, 37- salt spray generator, 38- brine suction pipe; 39-shelf, 40-sample rack, 41-fixed rod, 42-telescopic rod, 43-lamp rack, 44-ultraviolet lamp; 45-compressed air delivery pipe protective cover, 46-salt water injection port, 47-compressed air injection port, 48-compressed air nozzle, 49-salt water nozzle; 50-sample plate, 51-sample placement platform, 52-loading plate, 53-screw, 54-nut; 55-compressed air input pipe, 56-switch valve, 57-salt water chamber, 58-salt water chamber sensor, 59-salt water delivery pipe; 60-compressed air delivery pipe, 61-pressure barrel heating pipe, 62-pressure barrel sensor, 63-pressure barrel; 64-loading device, 65-guide rail, 66-screw hole, 67-pressure sensor, 68-ultraviolet radiation meter, 69-pressure barrel pressure regulating valve, 70-nozzle pressure regulating valve. DETAILED DESCRIPTION

[0021] In order to solve the problem that it is impossible to conduct salt spray corrosion test and ultraviolet aging test on cement-based materials at the same time, and the problem of poor consistency with actual conditions, in this application, a salt spray chamber that can simulate the coupling of load effects and ultraviolet environmental factors is proposed.

[0022] The salt spray chamber comprises a chamber body, an ultraviolet light source, and a salt water chamber.

[0023] The box body may be constructed by combining a metal frame and a metal skin; or the box body may be constructed by welding metal plates (such as stainless steel plates); in other examples, the box body may also be constructed in other forms.

[0024] A sample rack (which can be made of stainless steel) is arranged inside the box. In order to fix the sample rack, a shelf is arranged inside the box; based on this, a sample rack / sample rack is arranged on the shelf (such as placed or bolted or welded). That is, a storage plate or shelf can be welded on the inner wall of the box, and then used as a support point, and the edge of the sample rack can be placed on the above support point (which can be further fixed by welding, tying, bolting, etc.). And the internal space of the box is divided into two parts with different main functions by the sample rack, which are an upper chamber and a lower chamber respectively; the upper chamber and the lower chamber are used to place corresponding components accordingly.

[0025] The sample rack is a component associated with the placement and fixation of the sample. Specifically, the sample rack is provided with a loading device (realized by the cooperation of the protrusions and depressions mentioned later). The loading device is used to place the sample, fix the sample and apply pressure to the sample.

[0026] The ultraviolet light source is located in the upper chamber separated by the sample holder, and is used to generate irradiation for the sample (such as a concrete block) fixed to the loading device; the salt water chamber is located in the lower chamber, and a spray tower for spraying salt mist to the sample fixed to the loading device is also provided in the salt water chamber. In some examples, two spray towers are configured in the salt spray chamber; the number of spray towers can be other numbers. The spray tower spray mode can be realized as continuous spray or periodic spray - this can be achieved by controlling the opening and closing mode of the valve (or start-stop switch) by the control system. When spraying, use a pressure barrel pressure regulating valve to control the pressure barrel air pressure at 0.2-0.4Mpa, and use a nozzle pressure regulating valve to adjust the nozzle pressure to 0.1-0.2MPa.

[0027] The box is also equipped with equipment for generating ultraviolet rays and a salt water tank for generating salt mist. In this way, the two can generate ultraviolet rays and salt mist into the box to simulate the use scenarios of the samples in some scenarios.

[0028] Therefore, through the above settings, the samples placed on the loading device of the sample rack of the box can be subjected to the three simulated environmental conditions of pressure / load, ultraviolet light and salt spray respectively (other simulated conditions, such as temperature conditions, can also be added in other examples), so that the performance of the samples under more realistic natural conditions can be simulated, so as to obtain the performance of the samples in a real environment.

[0029] The box is a roughly rectangular structure. In order to facilitate movement and installation, the salt spray box can have a base, and the bottom of the base is provided with universal wheels. The box is set on the base, and can be moved in any direction through the universal wheels, and temporarily or permanently fixed at the target position - therefore, a locking mechanism can also be configured.

[0030] Considering the convenience of installation and maintenance of the test equipment, a box cover is provided on the box body, which can be a herringbone structure. The material of the box cover can be the same as that of the box body, such as stainless steel.

[0031] Furthermore, an opening may be provided on the box cover, and a single door (or double door) may be provided at the opening of the box cover; an observation window is provided in the single door for observation during the test or in other circumstances. The material of the single door may be stainless steel.

[0032] Furthermore, the box cover can be opened and closed manually or mechanically; accordingly, according to the different opening and closing methods of the box cover, it has corresponding installation and use methods. For example, for the mechanical control solution, an electric telescopic rod is provided between the box body and the box cover.

[0033] The electric telescopic rod can be extended to open the box cover, or shortened to close the box cover. The opening and closing can be achieved by rotating the box cover and the box body (one side rotates and the other side opens and closes); or the box cover and the box body are buckled and matched, and the box cover as a whole moves up and down relative to the box body with the telescopic rod to achieve opening and closing.

[0034] In particular, in some examples, the ultraviolet light source disposed in the upper chamber may have a direction adjustment mechanism with an adjustable angle of the ultraviolet light toward the loading device. That is, the direction adjustment mechanism can change the direction of the generated ultraviolet light. Therefore, the light source may include: a direction adjustment mechanism and an ultraviolet lamp. The direction adjustment mechanism is connected to the upper chamber, and the ultraviolet lamp is connected to the direction adjustment mechanism.

[0035] As a way to implement the orientation adjustment, the orientation adjustment mechanism may include a fixed rod, a telescopic rod, and a lamp tube rack. The fixed rod and the telescopic rod are arranged to extend in the same direction (e.g., parallel), and the two ends of the fixed rod are respectively connected to the upper chamber and the lamp tube rack (the ultraviolet lamp can be arranged in the lamp tube rack), and the two ends of the telescopic rod are respectively connected to the upper chamber and the lamp tube rack. The lamp tube rack is hinged to the fixed rod, and the lamp tube rack is hinged to the telescopic rod.

[0036] Thus, the extension and retraction of the telescopic rod can make the lamp holder rotate around the hinge of the fixed rod as the rotation center, thereby changing the direction of the lamp holder, and further changing the direction and irradiation position of the generated ultraviolet rays. The telescopic rod can be controlled by the operating system in the console, and controlled according to real-time operation or preset programs.

[0037] Therefore, through such a design, the amount of ultraviolet rays irradiated to the sample, the irradiation position and irradiation time can be adjusted. For example, the irradiation direction, position, and light intensity of light at different time points during the day can be simulated (by adjusting the brightness of the lamp - which can be achieved by the control system based on the rotation operation of the brightness knob) to produce a more realistic simulation effect.

[0038] In order to better simulate the natural environment, the salt spray chamber may also include a heating tube disposed in the chamber to adjust the temperature in the chamber and accordingly adjust the temperature of the environment in which the sample is located. In addition, the heating tube can also be used to adjust the temperature of the salt spray. Therefore, heating tubes with different functions and different names can be configured according to different heating or temperature adjustment requirements.

[0039] Based on the control needs of various electric control equipment or electronic components, the salt spray chamber can also include an operating table (the material can be stainless steel, and a control system is installed, and the power supply parameters required for its operation are, for example, 220V / 50Hz) and a temperature sensor. The control system can be provided with an openable and closable dust cover to protect various switches, buttons, knob indicator lights, such as dust and water.

[0040] The aforementioned heating tube and temperature sensor can be connected to the control system in the operating table respectively, so as to control whether to heat, heating time and heating temperature through the control system. That is, in some examples, the temperature is obtained by the temperature sensor, and then fed back to the control system, and then the heating operation of the heating tube is adjusted, or the heating time, or the heating stop time is adjusted according to the needs.

[0041] In addition to temperature sensors, sensors with various other functions can also be set. For example, a water level sensor can be set in the box body - it can be used to release the water in the box body as needed. Therefore, a drain pipe and an automatic overflow pipe can be set on the box body.

[0042] The drain pipe can completely drain the water in the box. Similarly, the salt water chamber can also be provided with a drain pipe so that all the water can be completely drained at the end of the experiment. Matchingly, a switch valve is provided on the drain pipe, which is operated by the control system.

[0043] The automatic overflow pipe can maintain a certain water level in the box under certain circumstances, and can correspond to the brine chamber arranged in the box. That is, the brine chamber can store brine, and a certain amount of water is maintained in it through the automatic overflow pipe, which is used to input into the brine tank in the box, and then the corresponding equipment generates salt mist.

[0044] In order to generate salt mist on demand, the source of salt water can be separated from the box. For example, a salt water chamber is set inside the aforementioned operating table, and a salt water chamber cover can be set on the operating table accordingly. That is, the salt water chamber (set in the operating table) cooperates with the salt water tank (set in the box). Water is transported between the salt water chamber and the salt water tank, so the two are connected to each other with a salt water delivery pipe. Correspondingly, a salt water delivery pipe protective cover (for example, plastic material) and a compressed air delivery pipe protective cover (for example, plastic material) can be set between the salt spray box and the operating table.

[0045] The brine tank is provided with a brine tank cover, which can be provided as a plate-shaped structure. For example, the top of a barrel-shaped brine tank is closed with the brine tank cover. A position above the brine tank cover, such as the area on the sample rack corresponding to the loading device, is provided with an ultraviolet radiation meter for detecting the amount of ultraviolet rays.

[0046] As a device for generating salt mist, the salt water tank cover is provided with two (or other numbers) spray towers. The spray towers are connected to the inside of the salt water tank through the holes in the salt water tank cover. A salt mist generator (which may be made of glass) is provided in the spray tower.

[0047] For example, the salt spray generator is provided with a salt water suction pipe, a salt water injection port, a compressed air injection port, a compressed air nozzle, and a salt water nozzle. Correspondingly, the operating table can be provided with a nozzle pressure regulating valve. In addition, in order to improve the atomization ability of the salt water, a conical disperser can also be provided on the top of the spray tower, and based on this, it can be understood that the spray is sprayed through the conical disperser.

[0048] Corresponding sensors, such as water level sensors and temperature sensors, can also be arranged in the brine chamber of the operating table. A brine delivery pipe is arranged in the brine chamber, which is connected to the box body and communicated with the brine tank in the box body.

[0049] A pressure barrel is installed in the operating table, and the sprayed salt mist is formed by pressurizing. A compressed air delivery pipe is installed in the pressure barrel (a compressed air input pipe is also installed on the operating table, and the compressed air source of the input pipe can be an external air compressor). A pressure barrel heating pipe and pressure barrel sensors (water level sensor, temperature sensor, air pressure sensor) are installed in the pressure barrel.

[0050] Furthermore, the operating table is also provided with a pressure barrel water filling pipe and a pressure barrel drainage pipe, which, as the name implies, are used to fill water into the pressure barrel and drain the water from the pressure barrel respectively; and the two are provided with valves / switch valves respectively. A pressure barrel pressure regulating valve can also be provided on the operating table.

[0051] The above mainly discusses the relevant content of salt spray, and the loading device (whose material is, for example, stainless steel) will be discussed next.

[0052] The loading device includes a placement component and a pressurizing component that match each other. In terms of function, the placement component is used to place the sample, and the pressurizing component is used to apply pressure to the sample placed on the placement component.

[0053] The position of the placement component can be configured according to the position of the salt water tank, or can also be appropriately adjusted near the above position. The position of the pressurizing component corresponds to the position of the placement component.

[0054] In order to facilitate pressurizing (applying load) the sample, the placement component can be provided with two opposing guide rails. Accordingly, the pressurizing component includes two loading plates and a plurality of screws. The loading plate includes an integrally formed vertical plate and a horizontal plate. The vertical plate (a pressure sensor connected to the control system in the operating table can be provided, which can be a wireless pressure sensor) is used to contact and squeeze the sample, and the two loading plates are respectively connected to the screws through threaded holes provided on the vertical plate, and the horizontal plate is provided with a slide groove, and the guide rails slide with the horizontal plate through the slide groove.

[0055] In some specific examples, the placement assembly includes a sample plate. The sample plate may be provided with a groove, and the groove is completely engaged with the sample holder to achieve positioning and fixing of the loading device (it may be a non-detachable connection, or it may be relatively slidable so as to be temporarily fixed at different selected positions).

[0056] The sample plate is provided with a placement platform and a guide rail. Accordingly, the pressurizing assembly includes a loading plate that can slide on the guide rail. A screw hole can be provided on the loading plate, and a screw rod is provided in the screw hole, and the two (the screw hole and the screw rod) are threadedly matched. For fastening, a nut is provided on the screw rod so as to lock the loading plate in a desired position. At the same time, in order to control or detect the pressure, a pressure sensor (which can be communicated with the aforementioned control system) can be provided on the loading plate.

[0057] Based on the above structure, various electronic components, devices and the control system in the operating console are electrically connected or communicatively connected to each other so that the control system obtains corresponding sensor information and performs corresponding operations according to preset control logic or operation control logic to control different target devices or electronic devices.

[0058] For example, the control system may include a power switch as a master switch for starting and stopping its operation. In addition, the control system may also include a water level indicator structure related to the water level, such as a water level indicator of a sensor in the box, a water level indicator of the brine chamber, and a water level indicator of the pressure tank.

[0059] Furthermore, the control system may also include various control buttons, such as a lifting control key for the box cover, a telescopic control key for the telescopic rod, a spray control key for the spray tower, and a brightness control knob for the ultraviolet lamp. The lifting control key may be configured with three gears: the first gear is for raising, the second gear is for pausing, and the third gear is for descending. The telescopic control key may have three gears: the first gear is for extending, the second gear is for pausing, and the third gear is for shortening. The brightness control knob may be configured to increase the brightness by rotating clockwise and decrease the brightness by rotating counterclockwise.

[0060] Furthermore, the control system may also include various display instruments or devices. For example, these instruments and devices include but are not limited to the pressure barrel pressure instrument panel of the pressure barrel, the spray pressure instrument panel of the spray tower, the test chamber water temperature display of the test chamber sensor; the brine chamber water temperature display of the brine chamber sensor; the pressure barrel water temperature display of the pressure barrel sensor, and the pressure display of the pressure sensor.

[0061] Through the above scheme, the salt spray chamber provided by the present invention is a test equipment that can simulate the coupling of load effect and ultraviolet environmental factors. The salt spray chamber can simultaneously simulate multiple environmental factors such as ultraviolet rays, humidity, salt spray, etc., so it is closer to the corrosion and aging conditions in the actual environment, so that the service life and performance changes of the material can be predicted more accurately.

[0062] In addition, multiple heating tubes and sensors are arranged inside the salt spray chamber and operating table to ensure that the test air temperature, water temperature, and salt spray temperature are the same as the experimental environment temperature, and are monitored in real time through sensors.

[0063] Through comprehensive testing in a salt spray chamber that simulates load effects and ultraviolet environmental factors, the aging and corrosion process of the material can be accelerated. Researchers can obtain more comprehensive material performance data, reduce failures or failures caused by environmental factors, and improve the stability and durability of cement-based materials under various marine environmental conditions.

[0064] The following is a detailed description of specific examples of the present invention with reference to the accompanying drawings.

[0065] like Figures 1 to 8As shown, the present invention is a salt spray chamber for simulating load action and ultraviolet environmental factor coupling. The salt spray chamber is designed to have a salt spray deposition amount of 1.0-2.0 ml / 80 cm2.h inside. The salt solution can be configured as a sodium chloride solution according to the standard (GB / T10125-2021), or a high-concentration seawater solution can be configured according to the standard (ASTM D1141-98).

[0066] like Figure 1 As shown, the salt spray chamber comprises a base 1 .

[0067] A box body 3 is arranged on the base 1; a universal wheel 2 is arranged under the base 1. A box cover 4 is arranged on the box body 3, and an electric telescopic rod 8 is arranged between the box body 3 and the box cover 4. An opening 5 is arranged on one side of the box cover 4. A single door 6 is arranged at the opening 5. An observation window 7 is arranged in the single door 6.

[0068] The box body 3 is provided with a test chamber heating tube 34 , a test chamber sensor 33 (such as a water level sensor and a temperature sensor), a salt water tank 35 , and a shelf 39 .

[0069] The salt water tank 35 is provided with a tank cover 4; the tank cover 4 is provided with an ultraviolet radiation meter 68; and two spray towers 36 are provided in the tank cover 4. The spray tower 36 can also be equipped with a conical disperser to achieve functions such as guiding the mist, adjusting the amount of mist, and uniformly falling mist. The spray tower 36 is provided with a salt mist generator 37. The salt mist generator 37 is provided with a salt water suction pipe 38.

[0070] A sample rack 40 is disposed on the shelf 39 .

[0071] A fixed rod 41 and a telescopic rod 42 are arranged in the box body 3 ; a lamp tube holder 43 is arranged on the fixed rod 41 and the telescopic rod 42 ; and an ultraviolet lamp tube 44 is arranged in the lamp tube holder 43 .

[0072] The box body 3 is provided with a laboratory drain pipe 31, a laboratory automatic overflow pipe 32, and a brine tank drain pipe 30. The brine tank drain pipe 30 and the laboratory automatic overflow pipe 32 are provided with a switch valve 56.

[0073] The salt spray chamber further comprises an operating table 9. In addition, the operating table 9 is provided with a control system 10, a dust cover 11, a salt water chamber top cover 12, a salt water chamber 57, and a pressure barrel 63.

[0074] A brine chamber sensor 58 (eg, including a water level sensor, a temperature sensor) and a brine delivery pipe 59 are disposed in the brine chamber 57 .

[0075] The pressure barrel 63 is provided with a compressed air delivery pipe 60 , a pressure barrel heating pipe 61 , and a pressure barrel sensor 62 (such as a water level sensor, a temperature sensor, an air pressure sensor, etc.).

[0076] In addition, the operating table 9 is provided with a pressure tank water filling pipe 27, a pressure tank drain pipe 28, a compressed air input pipe 55, a pressure tank pressure regulating valve 69, and a nozzle pressure regulating valve 70. In addition, a switch valve 56 is provided on the pressure tank water filling pipe 27 and the pressure tank drain pipe 28.

[0077] The box body 3, the box cover 4, the single door 6, the operating table 9, and the sample rack 40 are made of stainless steel. The box body, the box cover, and the single door made of stainless steel can be used to prevent ultraviolet rays from penetrating outward and protect the internal facilities of the operating table. The sample rack made of stainless steel can be used to bear the load generated by the dead weight of the sample (sample) and the loading device.

[0078] On the basis of the above structure, the interior of the box 3 can be heated directly by steam. This method has the advantages of fast heating speed, uniform temperature distribution, and adjustable temperature (accuracy is not less than ±1°C). For example, in some cases, the temperature inside the test room of the salt spray box can be controlled at 35°C to 60°C.

[0079] Similarly, the temperature in the pressure barrel 63 in the operating table is controlled at 47°C to 70°C, and the temperature is adjustable with an accuracy of not less than ±1°C.

[0080] As a fluid transmission channel between the box body and the operating table, a saline delivery pipe protective cover 29 and a compressed air delivery pipe protective cover 45 can be arranged between the box body 3 and the operating table 9. The saline delivery pipe protective cover 29 and the compressed air delivery pipe protective cover 45 are made of plastic.

[0081] The salt mist generator 37 (for example, made of quartz glass) is provided with a salt water injection port 46 , a compressed air injection port 47 , a compressed air nozzle 48 , and a salt water nozzle 49 .

[0082] A loading device 64 is disposed on the sample rack 40 ; the loading device 64 includes: a sample plate 50 .

[0083] The sample plate 50 is provided with a sample placement platform 51, a guide rail 65, and a loading plate 52 that can slide on the guide rail 65. The loading plate 52 is provided with a screw hole 66 threadedly connected with a screw rod 53, and a nut 54 is also provided on the screw rod 53; the loading plate 52 is provided with a pressure sensor 67.

[0084] In terms of materials, the loading device 64 uses high-rigidity stainless steel to prevent the loading plate from deforming during loading, thereby ensuring the uniformity of loading on the sample. When using the salt spray test, the side of the sample plate with the groove is inserted into the sample holder downward, and the loaded sample is placed on the placement platform. Then, the loading plate is moved along the guide rail to be close to the surface of the sample, and the screw passes through the screw hole to connect the two loading plates. First tighten the nut on one loading plate; tighten the nut on the other loading plate in a cross order, and determine the load size according to the pressure sensor. The pressure sensor 67 in the example has a wireless transmission function, so the corresponding pressure sensor can be added according to the actual number and material of the sample, so as to monitor and transmit the loading status of the sample to the operating system in real time.

[0085] The control system 10 of the operating table includes a power switch 13 for starting or stopping the test process.

[0086] In addition, in order to realize various control functions, the control system also includes the following devices: The laboratory water level indicator light 14 of the laboratory sensor 33; the brine chamber water level indicator light 15 of the brine chamber 57; the pressure barrel water level indicator light 16 of the pressure barrel 63; the lifting control key 17 of the box cover 4; the telescopic control key 18 of the telescopic rod 42; the spray control key 19 of the spray tower 36; the brightness control knob 20 of the ultraviolet lamp 44; the pressure barrel air pressure instrument panel 21 of the pressure barrel 63; the spray air pressure instrument panel 22 of the spray tower 36; the laboratory water temperature display 23 of the laboratory sensor 33; the brine chamber water temperature display 24 of the brine chamber sensor 58; the pressure barrel water temperature display 25 of the pressure barrel sensor 62; the radiation intensity display 26 of the ultraviolet radiometer 68.

[0087] Functionally, the test chamber water level indicator 14, the salt water chamber water level indicator 15, and the pressure barrel water level indicator 16 are used to monitor the water level of each part in the salt spray chamber. If the actual water level is lower than the water level sensor, the water level indicator of the corresponding part will light up, indicating that the part is short of water. When any water level indicator lights up, the salt spray chamber stops working to prevent the salt spray chamber from drying out.

[0088] The range of the pressure gauge and barometer is 0-1MPa; the range of the temperature display and temperature sensor is 0-90℃; the range of the UV radiation meter 68 is 0-50W / m 2 / nm, the UV wavelength test range and peak wavelength are λ=375-475nm, λp=420nm.

[0089] The lifting control key 17 has three gears, the first gear is for raising, the second gear is for pausing, and the third gear is for descending. The telescopic control key 18 has three gears, the first gear is for extending, the second gear is for pausing, and the third gear is for shortening. The brightness control knob 20 is rotated clockwise to increase the brightness, and counterclockwise to reduce the brightness.

[0090] The above embodiments shown in the drawings have described in detail the structures, features, functions and effects involved in this application. However, the above contents are only preferred embodiments of this application, and this application should not limit the scope of implementation by the drawings. Any changes made in accordance with the concept of this application, or modifications to, or equivalent embodiments of equivalent changes, still do not exceed the spirit covered by the description and drawings, and should be within the scope of protection of this application.

Claims

1. A salt spray chamber, characterized in that: include: The box body has an internal space divided into an upper chamber and a lower chamber by a fixed sample rack, and the sample rack is provided with a loading device, and the loading device is used to place the sample and apply pressure to the sample; An ultraviolet light source located in the upper chamber is used to generate ultraviolet light to irradiate the sample fixed to the loading device; The salt water chamber located in the lower chamber is provided with a spray tower for spraying salt mist toward the sample fixed to the loading device.

2. The salt spray chamber according to claim 1, characterized in that: The light source has a direction adjustment mechanism with which the angle of the ultraviolet rays toward the loading device can be adjusted.

3. The salt spray chamber according to claim 2, characterized in that: The light source comprises: a direction adjustment mechanism and an ultraviolet lamp tube; The orientation adjustment mechanism is connected to the upper chamber, and the ultraviolet lamp is connected to the orientation adjustment mechanism.

4. The salt spray chamber according to claim 2 or 3, characterized in that: The orientation adjustment mechanism includes a fixed rod, a telescopic rod and a lamp tube holder; The fixed rod and the telescopic rod are arranged to extend in the same direction, and the two ends of the fixed rod are respectively connected to the upper chamber and the lamp tube frame, and the two ends of the telescopic rod are respectively connected to the upper chamber and the lamp tube frame; The lamp tube frame is hinged to the fixed rod, and the lamp tube frame is hinged to the telescopic rod.

5. The salt spray chamber according to claim 1, characterized in that: The salt spray chamber also includes a heating pipe arranged in the chamber to adjust the temperature in the chamber.

6. The salt spray chamber according to claim 1 or 5, characterized in that: The salt spray box also includes an operating table, and the salt spray box also includes a temperature sensor. The heating tube and the temperature sensor are respectively connected to a control system in the operating table.

7. The salt spray chamber according to claim 1, characterized in that: The loading device comprises a placement component and a pressurizing component which match each other. The placement component is used to place the sample, and the pressurizing component is used to apply pressure to the sample placed on the placement component.

8. The salt spray chamber according to claim 7, characterized in that: The placement component is provided with opposing guide rails, and the pressurizing component includes two loading plates and multiple screws. The loading plates include an integrally formed vertical plate and a horizontal plate. The vertical plate is used to contact and squeeze the sample. The two loading plates are respectively connected to the screws through threaded holes set on the vertical plates, and the horizontal plate is provided with a slide groove. The guide rails are slidably matched with the horizontal plates through the slide groove.

9. The salt spray chamber according to claim 8, characterized in that: The salt spray box also includes an operating table, and the salt spray box also includes a pressure sensor arranged on the vertical plate, and the pressure sensor is connected to the control system in the operating table.

10. The salt spray chamber according to claim 1, characterized in that: A conical disperser is disposed on the top of the spray tower, and the spray is sprayed out through the conical disperser.

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