Automatic brine preparation equipment for salt spray test

Abstract

The utility model discloses automatic saline water preparation equipment for a salt spray test. Comprising a brine tank, a master controller, and a stirrer, a saturated sodium chloride adding device, a hydrochloric acid titration device, a sodium hydroxide titration device, a first liquid level sensor, a second liquid level sensor, a PH value sensor, a density sensor, a brine delivery pump and a pure water adding device which are respectively in communication connection with the master controller, the saturated sodium chloride adding device, the hydrochloric acid titration device, the sodium hydroxide titration device, the brine delivery pump and the pure water adding device are hermetically communicated with an inner cavity of the brine tank, and the first liquid level sensor and the second liquid level sensor are arranged on the side wall of the inner cavity of the brine tank; the first liquid level sensor is arranged above the second liquid level sensor, and a preset height difference exists between the first liquid level sensor and the second liquid level sensor. The equipment disclosed by the utility model can be used for automatically preparing saline water in a closed environment, so that the saline water preparation is more accurate and higher in safety, the physical strength and time of test personnel are saved, and the test cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of corrosion resistance testing technology for metal materials and products, specifically to an automatic brine preparation device for salt spray testing. Background Technology

[0002] Metal materials and their products are subject to corrosion damage due to atmospheric environment during production, transportation, storage and use. Indoor accelerated corrosion testing is the main test method for studying atmospheric corrosion. Indoor accelerated corrosion testing mainly includes salt spray test and cyclic salt spray corrosion test.

[0003] As users increasingly demand higher levels of comfort and durability from their products, and consumers become more aware of their rights, the number of corrosion complaints is rising. To address product corrosion issues, companies are now paying particular attention to the corrosion resistance of their products. Salt spray testing is a primary testing method for these companies. Currently, the salt water tank capacity of salt spray chambers on the market ranges from 50L to 200L. During salt spray testing, as the test cycle lengthens, the consumption of salt water in the tank also increases. Therefore, manual preparation of salt water is necessary to replenish the water and ensure the test continues smoothly. However, the salt water preparation process involves significant exposure to air, where carbon dioxide dissolves in the salt water, causing pH instability. Furthermore, salt water preparation requires physical exertion and time from testing personnel, increasing the cost of the test.

[0004] The prior art discloses a portable brine preparation device with stirring, automatic addition of pure water and brine output functions. However, the preparation process of this brine preparation device is not automated enough. It cannot automatically add salt, automatically adjust density and pH value, and still requires manual assistance.

[0005] In summary, in view of the problems existing in the prior art, there is an urgent need in the field for an automatic brine preparation device that can automatically prepare brine for salt spray testing in a closed environment. Utility Model Content

[0006] In view of this, the purpose of this utility model embodiment is to provide an automatic brine preparation device for salt spray testing, which can solve the problems of existing devices being exposed to air and unable to achieve automation in the brine preparation process.

[0007] Based on the above objectives, one aspect of this utility model provides an automatic brine preparation device for salt spray testing, including a brine tank, a main controller, and a stirrer, a saturated sodium chloride addition device, a hydrochloric acid titration device, a sodium hydroxide titration device, a first liquid level sensor, a second liquid level sensor, a pH sensor, a density sensor, a brine delivery pump, and a pure water addition device, all of which are communicatively connected to the main controller. The brine tank is entirely sealed, and the saturated sodium chloride addition device, the hydrochloric acid titration device, the sodium hydroxide titration device, the brine delivery pump, and the pure water addition device are all sealed and connected to the inner cavity of the brine tank. The first liquid level sensor and the second liquid level sensor are disposed on the inner wall of the brine tank, with the first liquid level sensor located above the second liquid level sensor and having a predetermined height difference between them.

[0008] Preferably, in the above-described automatic brine preparation equipment for salt spray testing, the outer surface of the brine tank is covered with insulating cotton.

[0009] In the above-described automatic brine preparation equipment for salt spray testing, preferably, the stirrer is located at the center of the bottom of the brine tank.

[0010] Preferably, in the above-described automatic brine preparation equipment for salt spray testing, the pH sensor and the density sensor are located at the bottom of the inner cavity of the brine tank.

[0011] Preferably, in the above-described automatic brine preparation equipment for salt spray testing, the saturated sodium chloride addition device, the hydrochloric acid titration device, and the sodium hydroxide titration device are respectively connected to the upper part of the brine tank.

[0012] Beneficial effects

[0013] This invention provides an automatic brine preparation device for salt spray testing, capable of automatically preparing brine for salt spray tests in a closed environment. The connections between the saturated sodium chloride addition device, hydrochloric acid titration device, sodium hydroxide titration device, brine delivery pump, and pure water addition device and the brine tank are sealed, creating a closed space within the brine tank. This prevents the brine from being exposed to air during preparation, resulting in more accurate and safer brine preparation. Furthermore, a central controller manages the stirrer, saturated sodium chloride addition device, hydrochloric acid titration device, sodium hydroxide titration device, first level sensor, second level sensor, pH sensor, density sensor, brine delivery pump, and pure water addition device. This enables automatic addition of pure water and salt, automatic monitoring of solution level, density, and pH, automatic stirring, automatic adjustment of density and pH, and automatic brine output. This fully automates the brine preparation process, saving personnel time and effort, and reducing testing costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an automatic brine preparation device for salt spray testing according to an embodiment of the present invention. Detailed Implementation

[0015] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0016] It should be noted that all expressions such as "first" and "second" used in the embodiments of this utility model are for the purpose of distinguishing multiple entities or parameters with the same name but different names. It can be seen that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of this utility model. Subsequent embodiments will not explain this in detail.

[0017] Based on the above objectives, this utility model provides an embodiment of an automatic brine preparation device for salt spray testing. Figure 1 This is a schematic diagram of an automatic brine preparation device for salt spray testing according to this embodiment. Figure 1 As shown, the automatic brine preparation equipment for salt spray testing mainly includes a brine tank 1, a main controller 12, and a stirrer 2, a saturated sodium chloride addition device 3, a hydrochloric acid titration device 4, a sodium hydroxide titration device 5, a first liquid level sensor 6, a second liquid level sensor 7, a pH sensor 8, a density sensor 9, a brine delivery pump 10, and a pure water addition device 11, all of which are communicatively connected to the main controller 12.

[0018] The brine tank 1 is made of a corrosion-resistant, high-strength composite material. The brine tank 1 is entirely sealed and has several mounting holes. The saturated sodium chloride adding device 3, the hydrochloric acid titration device 4, the sodium hydroxide titration device 5, the brine delivery pump 10, and the pure water adding device 11 are all sealed and connected to the inner cavity of the brine tank 1 through these mounting holes. Therefore, the brine preparation process can be carried out in a sealed environment. Preferably, the outer surface of the brine tank 1 is covered with insulating cotton.

[0019] The first liquid level sensor 6 and the second liquid level sensor 7 are disposed on the inner wall of the brine tank 1. The first liquid level sensor 6 is located above the second liquid level sensor 7 and there is a predetermined height difference between them. That is, the first liquid level sensor 6 is a high liquid level sensor and the second liquid level sensor 7 is a low liquid level sensor, which is used to detect the liquid level range of the brine tank.

[0020] The stirrer 2 is located at the center of the bottom of the inner cavity of the brine tank 1. The stirrer 2 is made of a corrosion-resistant material, such as ceramic.

[0021] The saturated sodium chloride adding device 3, the hydrochloric acid titration device 4, and the sodium hydroxide titration device 5 are respectively connected to the upper part of the brine tank 1. The pure water adding device 11 is connected to the inner cavity of the brine tank 1 from the upper part of the outer wall of the brine tank 1. The pH sensor 8 and the density sensor 9 are located at the bottom of the inner cavity of the brine tank 1. The brine delivery pump 10 is connected to the inner cavity of the brine tank 1 from the lower part of the outer wall of the brine tank 1.

[0022] In summary, the automatic brine preparation equipment for salt spray testing provided by this utility model can automatically prepare brine for salt spray testing in a closed environment. The connections between the saturated sodium chloride addition device, hydrochloric acid titration device, sodium hydroxide titration device, brine delivery pump, and pure water addition device and the brine tank are sealed, creating a closed space within the brine tank. This prevents the brine from being exposed to air during preparation, resulting in more accurate and safer brine preparation. Furthermore, a central controller manages the stirrer, saturated sodium chloride addition device, hydrochloric acid titration device, sodium hydroxide titration device, first level sensor, second level sensor, pH sensor, density sensor, brine delivery pump, and pure water addition device. This enables automatic addition of pure water and salt, automatic monitoring of solution level, density, and pH, automatic stirring, automatic adjustment of density and pH, and automatic brine output. This fully automates the brine preparation process, reduces human error, improves the quality of brine preparation, saves labor and time for testing personnel, and lowers testing costs.

[0023] The main operation of this utility model's device, which automatically prepares brine according to a preset calculation program, is summarized as follows: The first liquid level sensor 6, the second liquid level sensor 7, and the density sensor 9 feed back monitoring data to the main controller 12. The main controller 12 analyzes and calculates the monitoring data, and controls the pure water addition device 11 and the saturated sodium chloride addition device 3 based on the calculation results to adjust the solution density. The pH sensor 8 feeds back pH data to the main controller 12. The main controller 12 analyzes and calculates the pH data, and controls the hydrochloric acid titration device 4 and the sodium hydroxide titration device 5 based on the calculation results to adjust the solution pH. Through the above preparation process, brine with the required density and pH is prepared. Finally, according to the terminal demand, the main controller 12 controls the brine delivery pump 10 to deliver the prepared brine to the user end.

[0024] Although the present invention has been described in detail above with general description and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A salt water automatic configuration device for salt spray test, characterized by, The brine tank is wholly sealed, the saturated sodium chloride adding device, the hydrochloric acid titration device, the sodium hydroxide titration device, the brine conveying pump and the pure water adding device are in sealed communication with the inner cavity of the brine tank respectively, the first liquid level sensor and the second liquid level sensor are arranged on the inner cavity sidewall of the brine tank, and the first liquid level sensor is located above the second liquid level sensor and has a predetermined height difference therebetween.

2. The automatic brine configuring apparatus for a salt spray test according to claim 1, wherein The outer surface of the brine tank is covered with heat preservation cotton.

3. The automatic brine configuring apparatus for a salt spray test according to claim 1, wherein The stirrer is arranged at the central position of the inner cavity bottom of the brine tank.

4. The automatic brine configuring apparatus for a salt spray test according to claim 1, wherein The PH value sensor and the density sensor are arranged at the inner cavity bottom of the brine tank.

5. The automatic brine configuring apparatus for salt spray test according to claim 1, wherein The saturated sodium chloride adding device, the hydrochloric acid titration device and the sodium hydroxide titration device are connected to the upper portion of the brine tank respectively.

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