A high temperature and high humidity gas corrosion test chamber

Abstract

The utility model discloses a high temperature and high humidity gas corrosion test box, include: the humidity sensor is arranged in the experiment box body, the experiment box body is divided into first space and second space by the partition board that is set up vertically, and the top and bottom of partition board all have interval with the experiment box body, the inside box body of setting up in the first space is suspended, the top of inside box body is provided with the exhaust hole bottom and is provided with the air inlet, the input end of exhaust pump is connected with the exhaust hole, the circulating fan, the heater, the evaporimeter and the humidifier are sequentially set up in second space from top to bottom, and the pressure balance mouth, the air inlet are set up on the experiment box body, the evaporimeter is connected with refrigerating system, and the gas cylinder is connected with first flow controller, air inlet through pipeline in proper order, and air inlet is connected with second flow controller through pipeline by air inlet pump in proper order, controller. The utility model can adjust the corrosive gas concentration in the box and satisfy the test demand of high temperature and high humidity.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, and in particular to a high temperature and high humidity gas corrosion test chamber. Background Technology

[0002] Corrosion testing standards specify requirements for air exchange rate and air velocity. Since temperature and humidity requirements are not stringent, existing gas corrosion chambers on the market primarily control temperature through external heaters and humidifiers, rather than through forced internal air circulation. The advantage of not using forced circulation is that it allows for very low air velocity without a fan, simplifying control. Most existing gas corrosion test chambers have a maximum high temperature limit of around 60°C and a relative humidity of no less than 60%.

[0003] However, with the development of technology, some companies have begun to conduct gas corrosion tests under high temperature and high humidity conditions, such as gas corrosion tests at 85℃ and 85%RH. High temperature and high humidity conditions require refrigeration assistance to achieve precise control, which means that existing gas corrosion test chambers cannot meet the latest testing requirements. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model proposes a high-temperature and high-humidity gas corrosion test chamber that can adjust the concentration of corrosive gases inside the chamber and meet the testing requirements for high temperature and high humidity.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A high-temperature and high-humidity gas corrosion test chamber includes: a test chamber body, an exhaust pump, a gas cylinder, and an intake pump. A temperature and humidity sensor is installed inside the test chamber body. The test chamber body is divided into a first space and a second space by a vertically erected partition, with gaps between the top and bottom of the partition and the test chamber body. A suspended inner chamber body is installed in the first space. An exhaust port is located at the top of the inner chamber body, and an intake port is located at the bottom of the inner chamber body. The input end of the exhaust pump extends into the first space and is connected to the exhaust port. The output end of the exhaust pump is connected to a corrosive gas treatment device. The second space is equipped with a circulating fan, a heater, an evaporator, and a humidifier arranged sequentially from top to bottom. A pressure balancing port is provided on the experimental chamber above the circulating fan, and an air inlet is provided on the experimental chamber between the evaporator and the humidifier. The evaporator is connected to the refrigeration system. The gas cylinder is connected to the first flow controller and the air inlet in sequence through pipelines. The air pump is connected to the second flow controller and the air inlet in sequence through pipelines. The temperature and humidity sensor, heater, humidifier, circulating fan, refrigeration system, first flow controller, and second flow controller are all electrically connected to the controller.

[0007] Preferably, the inner chamber is mounted on an adjustable-height bracket inside the experimental chamber.

[0008] Preferably, the bracket includes adjustable supports disposed on both sides of the experimental chamber and a perforated support plate adapted to the locking holes on the adjustable supports.

[0009] Preferably, the top of the inner box is provided with several exhaust holes, and the bottom of the inner box is provided with several air inlets.

[0010] Preferably, both sides of the partition are fixedly connected to the experimental chamber by screws.

[0011] Preferably, the experimental chamber is equipped with a cabinet door.

[0012] Preferably, the refrigeration system includes a compressor, a bypass valve, a condenser, a dryer filter, and a capillary tube. The evaporator, compressor, condenser, dryer filter, and capillary tube are connected in sequence to form a circuit. The two ends of the bypass valve are respectively connected to the outlet of the compressor and the circuit between the evaporator and the capillary tube through pipelines. The bypass valve is electrically connected to the controller.

[0013] Based on the above technical solution, the beneficial effects of this utility model are as follows: This utility model includes an experimental chamber, a gas cylinder for storing corrosive gases, an air intake pump for blowing in air, a first flow controller and a second flow controller for controlling the amount of corrosive gases and air entering, a refrigeration system for cooling, a humidifier for inputting water vapor, and an exhaust pump and controller for discharging the mixed gas. This application adjusts the ratio of air to corrosive gases by controlling the first and second flow controllers, thereby regulating the concentration of corrosive gases inside the chamber. Furthermore, by incorporating a refrigeration system, a heater, and a humidifier, this application can create high-temperature and high-humidity conditions within the experimental chamber, thus meeting new testing requirements. Attached Figure Description

[0014] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the structure of a high-temperature and high-humidity gas corrosion test chamber in one embodiment.

[0016] In the figure, the attached figures are labeled as follows:

[0017] 1. Experimental chamber; 11. Air inlet; 12. Inner chamber; 13. Heater; 14. Evaporator; 15. Circulating fan; 16. Pressure balance port; 17. Cabinet door; 2. Gas cylinder; 3. Air pump; 41. First flow controller; 42. Second flow controller; 51. Compressor; 52. Bypass valve; 53. Condenser; 54. Dryer filter; 55. Capillary tube; 6. Humidifier; 7. Exhaust pump; 8. Controller; 9. Corrosive gas treatment device; 10. Temperature and humidity sensor. Detailed Implementation

[0018] To more clearly illustrate this utility model, the following description, in conjunction with preferred embodiments, further clarifies the invention. Those skilled in the art should understand that the specific description below is illustrative rather than restrictive and should not be construed as limiting the scope of protection of this utility model.

[0019] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1As shown, this embodiment provides a high-temperature and high-humidity gas corrosion test chamber, including: a test chamber 1, an exhaust pump 7, a gas cylinder 2, and an air inlet pump 3. A temperature and humidity sensor 10 is installed inside the test chamber 1. The test chamber 1 is divided into a first space and a second space by a vertically erected partition, with gaps between the top and bottom of the partition and the test chamber 1. A suspended inner chamber 12 is installed in the first space. An exhaust port is provided at the top of the inner chamber 12, and an air inlet port is provided at the bottom of the inner chamber 12. The input end of the exhaust pump 7 extends into the first space and is connected to the exhaust port. The output end of the exhaust pump 7 is connected to a corrosive gas treatment device 9. In the second space... The following components are arranged sequentially from top to bottom: a circulating fan 15, a heater 13, an evaporator 14, and a humidifier 6. A pressure balancing port 16 is provided on the experimental chamber 1 above the circulating fan 15. An air inlet 11 is provided on the experimental chamber 1 between the evaporator 14 and the humidifier 6. The evaporator 14 is connected to the refrigeration system. The gas cylinder 2 is connected to the first flow controller 41 and the air inlet 11 in sequence through pipelines. The air pump 3 is connected to the second flow controller 42 and the air inlet 11 in sequence through pipelines. The temperature and humidity sensor 10, the heater 13, the humidifier 6, the circulating fan 15, the refrigeration system, the first flow controller 41, and the second flow controller 42 are all electrically connected to the controller 8.

[0022] In this embodiment, both the heater 13 and the evaporator 14 are directly fixed to the experimental chamber 1 by sheet metal and screws.

[0023] In one embodiment of a high-temperature and high-humidity gas corrosion test chamber, the inner chamber 12 is mounted on an adjustable-height bracket inside the test chamber 1.

[0024] Specifically, the bracket includes adjustable supports disposed on both sides of the experimental chamber 1, and a hollowed-out tray that matches the locking holes on the adjustable supports.

[0025] In one embodiment of a high-temperature and high-humidity gas corrosion test chamber, the top of the inner chamber 12 is provided with several exhaust holes, and the bottom of the inner chamber 12 is provided with several air inlets.

[0026] In one embodiment of a high-temperature and high-humidity gas corrosion test chamber, both sides of the partition are fixedly connected to the test chamber body 1 by screws.

[0027] In one embodiment of a high-temperature and high-humidity gas corrosion test chamber, the test chamber 1 is provided with a cabinet door 17.

[0028] In one embodiment of a high-temperature and high-humidity gas corrosion test chamber, the refrigeration system includes a compressor 51, a bypass valve 52, a condenser 53, a dryer filter 54, and a capillary tube 55. The evaporator 14, compressor 51, condenser 53, dryer filter 54, and capillary tube 55 are connected to form a circuit. The two ends of the bypass valve 52 are respectively connected to the outlet of the compressor 51 and the circuit between the evaporator 14 and the capillary tube 55 through pipelines. The bypass valve 52 is electrically connected to the controller 8.

[0029] In this embodiment, after the refrigerant (such as Freon) absorbs heat from the compressed air in the evaporator 14, it vaporizes into a low-temperature, low-pressure gaseous refrigerant, which is then drawn into the refrigeration compressor 51. After being compressed into a high-temperature, high-pressure gaseous refrigerant, it is discharged into the condenser 53, where it releases heat and condenses into a high-pressure liquid. This liquid then passes through a dryer filter 54 to remove moisture and impurities, and is throttled by a capillary tube 55 into a low-pressure, low-temperature refrigerant, which re-enters the evaporator 14 to absorb heat and vaporize, thus achieving cyclic refrigeration. During the refrigeration process, if the evaporator 14 provides excessive cooling capacity, a portion of the high-temperature gas is supplied through the bypass valve 52 to reduce the cooling capacity of the evaporator 14. Simultaneously, the power of the compressor 51 is reduced to adjust the output power of the refrigeration system.

[0030] The process is as follows:

[0031] The ambient air and corrosive gas are mixed in proportion and simultaneously introduced into the experimental chamber 1 by the air pump 3 that blows in ambient air and the gas cylinder 2 that stores corrosive gas. The concentration and flow rate of the corrosive gas entering the experimental chamber 1 are controlled by the first flow controller 41 and the second flow controller 42.

[0032] When ambient air and corrosive gases enter the experimental chamber 1, they mix with the water vapor generated by the humidifier 6, and the temperature and humidity of the air inside the chamber are controlled by the temperature control of the evaporator 14 and the heater 13.

[0033] The circulating fan 15 forces the mixed gas outside the inner chamber 12 to circulate; the exhaust pump 7 removes the mixed gas from the inner chamber 12, creating a negative pressure inside the inner chamber 12. This causes the air pressure inside the experimental chamber 1 to be higher than the air pressure inside the inner chamber 12, thereby forcing the gas inside the experimental chamber 1 to continuously enter the inner chamber 12 and form a unidirectional upward airflow. The flow rate is the flow rate controlled by the exhaust pump 7. The flow rate divided by the volume of the inner chamber 12 is the air exchange rate per unit time.

[0034] The above description is merely a preferred embodiment of a high-temperature and high-humidity gas corrosion test chamber disclosed in this utility model, and is not intended to limit the scope of protection of the embodiments in this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments in this specification should be included within the scope of protection of the embodiments in this specification.

[0035] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0036] The embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on its differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

Claims

1. A high-temperature and high-humidity gas corrosion test chamber, characterized in that, include: The experimental chamber comprises an exhaust pump, a gas cylinder, and an intake pump. A temperature and humidity sensor is installed inside the experimental chamber. The chamber is divided into a first space and a second space by a vertically erected partition, with gaps between the top and bottom of the partition and the experimental chamber. A suspended inner chamber is located within the first space. An exhaust vent is located at the top of the inner chamber, and an intake vent is located at the bottom. The input end of the exhaust pump extends into the first space and is connected to the exhaust vent. The output end of the exhaust pump is connected to a corrosive gas treatment device. The second space contains... The experimental chamber is arranged from top to bottom as follows: a circulating fan, a heater, an evaporator, and a humidifier. A pressure balancing port is provided on the experimental chamber above the circulating fan, and an air inlet is provided on the experimental chamber between the evaporator and the humidifier. The evaporator is connected to the refrigeration system. The gas cylinder is connected to the first flow controller and the air inlet in sequence through pipelines. The air pump is connected to the second flow controller and the air inlet in sequence through pipelines. The temperature and humidity sensor, heater, humidifier, circulating fan, refrigeration system, first flow controller, and second flow controller are all electrically connected to the controller.

2. The high-temperature and high-humidity gas corrosion test chamber according to claim 1, characterized in that, The inner chamber is mounted on an adjustable-height bracket inside the experimental chamber.

3. The high-temperature and high-humidity gas corrosion test chamber according to claim 2, characterized in that, The bracket includes adjustable supports disposed on both sides of the experimental chamber, and a perforated support plate adapted to the locking holes on the adjustable supports.

4. The high-temperature and high-humidity gas corrosion test chamber according to claim 1, characterized in that, The top of the inner box is provided with several exhaust holes, and the bottom of the inner box is provided with several air inlets.

5. A high-temperature and high-humidity gas corrosion test chamber according to claim 1, characterized in that, Both sides of the partition are fixedly connected to the experimental chamber by screws.

6. The high-temperature and high-humidity gas corrosion test chamber according to claim 1, characterized in that, The experimental chamber is equipped with cabinet doors.

7. A high-temperature and high-humidity gas corrosion test chamber according to claim 1, characterized in that, The refrigeration system includes a compressor, a bypass valve, a condenser, a dryer filter, and a capillary tube. The evaporator, compressor, condenser, dryer filter, and capillary tube are connected in sequence to form a circuit. The two ends of the bypass valve are respectively connected to the outlet of the compressor and the circuit between the evaporator and the capillary tube through pipelines. The bypass valve is electrically connected to the controller.

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