Hydrochloric acid ammonia corrosion test chamber

Abstract

The utility model discloses a hydrochloric acid ammonia gas corrosion test case relates to test case technical field, including test case main part, support seat, waste gas treatment tank, support seat top both sides are connected with test case main part and waste gas treatment tank respectively. The utility model discloses a ammonia gas injection pipe and hydrochloric acid injection pipe inject proper amount of ammonia gas and hydrochloric acid gas into test case main part, wherein the hydrochloric acid conduit and ammonia gas exhaust pipe correspondingly connected of ammonia gas injection pipe and hydrochloric acid injection pipe are upside down distribution in test case main part, are favorable to the full mixing of hydrochloric acid gas and the ammonia gas below, form even corrosive gas environment, this can ensure that the corrosion effect that each part in test case receives is more consistent, thereby obtains accurate test result, wherein the test case main part inner wall has been daubed anticorrosive layer coating), can effectively prevent the corrosion of hydrochloric acid and ammonia gas to test case main part inner wall.

Description

Technical Field

[0001] This utility model relates to the field of test chamber technology, and in particular to a hydrochloric acid ammonia corrosion test chamber. Background Technology

[0002] In modern home and industrial environments, corrosion is always a key factor affecting the service life and safety of equipment. Taking smart toilets as an example, they are in the humid, enclosed environment of the bathroom with detergent residue for a long time, and are susceptible to corrosion by corrosive gases such as hydrochloric acid and ammonia. Test chambers are used to simulate the corrosive conditions that toilets may encounter in the bathroom environment, including gases from sewer backflow, corrosive gases generated by bathing and other activities, and ammonia substances generated in the excretion area. By exposing the product to a closed, dark air environment with a high concentration of corrosive gases such as hydrochloric acid and ammonia, the quality changes of the product, components and materials under the harsh environmental conditions of corrosive gases are analyzed.

[0003] A test chamber with internal anti-corrosion function, disclosed in announcement number CN216093719U, includes a base plate to which a bottom box is bolted. The inner wall of the bottom box is bonded with a polyethylene layer. A fixing plate is slidably connected inside the bottom box, and springs are bolted to both sides of the inner wall of the fixing plate. By opening the baffle, the fixing plate is pulled out of the bottom box using a handle, and two clamps are used to clamp and fix the hydrochloric acid container by pushing the springs. The fixing plate is then pushed back into the bottom box and fixed using a clamp. After that, relevant experiments are carried out. Hydrochloric acid gas is transported into the top box through a pipe. The alkaline mesh in the treatment plate neutralizes the hydrochloric acid gas, and the condensate produced by the neutralization reaction is absorbed by the water-absorbing pad. This can prevent hydrochloric acid from splashing and causing injury to personnel, and can effectively treat hydrochloric acid gas to prevent direct discharge and environmental damage.

[0004] The existing technology described above uses a pipe to deliver hydrochloric acid gas into the top chamber, where it is neutralized by an alkaline mesh. However, the gas injection position in the pipe is fixed and difficult to adjust, meaning the injection angle and range are fixed. This results in an excessively high concentration of hydrochloric acid gas in a certain area of ​​the top chamber, while the concentration is lower in other areas, leading to incomplete neutralization. Furthermore, a certain area of ​​the alkaline mesh is continuously subjected to high concentrations of hydrochloric acid gas, causing rapid consumption of alkaline substances in that area, while other areas are not fully utilized. This reduces the lifespan of the alkaline mesh, requiring frequent replacement and increasing maintenance costs. Therefore, corresponding improvements are needed. Utility Model Content

[0005] The purpose of this invention is to provide a hydrochloric acid ammonia corrosion test chamber to solve the problem mentioned in the background art that the gas mixing effect of the existing hydrochloric acid ammonia corrosion test chamber is poor during use, which affects the experimental efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a hydrochloric acid and ammonia corrosion test chamber, comprising a test chamber body, a support base, and an exhaust gas treatment box, wherein the test chamber body and the exhaust gas treatment box are respectively connected to the top two sides of the support base;

[0007] The test chamber has hydrochloric acid injection pipes and ammonia injection pipes connected to its outer ends at both ends. Both pipes are equipped with corrosion-resistant pressure-reducing valves. One end of each pipe extends into the test chamber and is connected to a hydrochloric acid conduit and an ammonia discharge pipe, respectively. An adjustment mechanism is located on one side of the top of the test chamber. A U-shaped gas pipe is connected to the outer side of the test chamber, and a connecting pipe is connected to one side of the U-shaped gas pipe. A gas valve is installed on the connecting pipe, and one end of the connecting pipe extends into the waste gas treatment box. An inlet pipe is connected to the top of the outer side of the waste gas treatment box, and one end of the inlet pipe is connected to an external water supply device. An exhaust pipe is connected to the outer side of the waste gas treatment box below the inlet pipe. A rectangular groove is located on the outer side of the waste gas treatment box, and a servo motor is connected inside the rectangular groove. An airflow disturbance component is located inside the waste gas treatment box.

[0008] Furthermore, nozzles are evenly connected to one side of both the hydrochloric acid conduit and the ammonia emission pipe, and a connecting plate is fixed to one end of both the hydrochloric acid conduit and the ammonia emission pipe.

[0009] Furthermore, the interior of the test chamber body is coated with an anti-corrosion layer, which is a polytetrafluoroethylene coating.

[0010] Furthermore, the adjustment mechanism includes a support plate, which is fixed to the top of the test chamber body. A rotary motor is connected to the outside of the support plate, and a rotary shaft is fixed to the output shaft end of the rotary motor. A turntable is fixed to one end of the rotary shaft, and a swing column is fixed to the outside of the turntable. A hinge arm is movably connected to the outside of the swing column, and a toothed plate transmission component is movably connected to one end of the hinge arm.

[0011] Furthermore, the toothed plate transmission component includes two transmission toothed plates and a connecting column. The connecting column connects the two transmission toothed plates. A limit block passes through the inside of the connecting column and is fixed to the outside of the test chamber body. Gears are meshed at both ends of one side of the toothed plate transmission component, and a forward and reverse adjustment shaft is fixed at one end of each gear. One end of each forward and reverse adjustment shaft is fixedly connected to the connecting plate.

[0012] Furthermore, the airflow disturbance component includes a stirring shaft, which is fixed to one end of a servo motor. A connecting sleeve is uniformly fixed to the outside of the stirring shaft, and multiple airflow disturbance plates are uniformly connected to the outside of the connecting sleeve.

[0013] Furthermore, the outer side of the outer connecting sleeve of the airflow disturbance plate is provided with multiple holes arranged in a ring, and each airflow disturbance plate is uniformly provided with multiple through holes with a triangular cross section.

[0014] Compared with the prior art, the beneficial effects of this utility model are: when the hydrochloric acid and ammonia corrosion test chamber is used, the injected ammonia and hydrochloric acid gas can be introduced from multiple angles and in all directions to ensure the uniform distribution of ammonia and sulfuric acid gas, and it also has the function of waste gas treatment so that the emitted gas will not pollute the air.

[0015] Appropriate amounts of ammonia and hydrochloric acid are injected into the main body of the test chamber through ammonia injection pipes and hydrochloric acid injection pipes. The hydrochloric acid conduit and ammonia discharge pipe connected to the ammonia injection pipes are distributed vertically within the main body of the test chamber. This facilitates thorough mixing of the hydrochloric acid gas with the ammonia gas below, forming a uniform corrosive gas environment. This ensures that the corrosion effect on all parts of the test chamber is relatively consistent, thereby obtaining accurate test results. The inner wall of the main body of the test chamber is coated with an anti-corrosion layer, which can effectively prevent hydrochloric acid and ammonia gas from corroding the inner wall of the main body of the test chamber, ensuring that the main body of the test chamber maintains stable performance during long-term use.

[0016] During the gas injection process through the hydrochloric acid conduit and ammonia exhaust pipe, the rotary motor drives the rotating shaft and turntable to rotate, which in turn, in conjunction with the swing column, causes the articulated arm and articulated arm to move up and down. The toothed transmission component meshes with the gear, which allows the gear to rotate in both directions, and causes the forward and reverse adjustment shaft, connecting plate, hydrochloric acid conduit and ammonia exhaust pipe to rotate synchronously. This allows for adjustment of the gas injection angle and range, optimizing the gas distribution in the test chamber and ensuring that hydrochloric acid and ammonia can be mixed evenly to reach the set concentration. This helps to improve the accuracy and reliability of the test, as well as the efficiency and flexibility of the experiment.

[0017] Liquid is injected into the drain pipe through the inlet pipe and then sprayed evenly through the outlet head to spray the waste gas injected into the waste gas treatment box. HCl gas is highly soluble in water to form hydrochloric acid solution, which effectively removes HCl from the waste gas, preventing it from being directly emitted into the atmosphere and causing acid rain or equipment corrosion. Spraying can also remove particulate matter carried in the waste gas, which helps to purify the waste gas.

[0018] During the waste gas treatment process, the stirring shaft drives multiple airflow disturbance plates to rotate, which, together with the through holes, can enhance the gas-liquid contact efficiency and ensure that the waste gas can come into contact with the spray liquid, thereby enhancing the waste gas treatment efficiency and effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model;

[0022] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A in the middle;

[0023] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;

[0024] Figure 5 This is a schematic diagram of the airflow disturbance component of this utility model.

[0025] The following are the annotations in the diagram: 1. Main body of the test chamber; 101. Anti-corrosion layer; 2. Support base; 3. Hydrochloric acid injection pipe; 4. Ammonia injection pipe; 5. Corrosion-resistant pressure reducing valve; 6. U-shaped gas pipe; 7. Connecting pipe; 8. Waste gas treatment box; 801. Rectangular tank; 9. Exhaust pipe; 10. Liquid inlet pipe; 11. Servo motor; 1101. Stirring shaft; 1102. Connecting sleeve; 1103. Airflow disturbance plate; 1104. Through hole; 1 2. Adjustment mechanism; 1201. Rotary motor; 1202. Support plate; 1203. Rotating shaft; 1204. Turntable; 1205. Swing column; 1206. Hinge arm; 1207. Gear plate transmission component; 1208. Gear; 1209. Forward and reverse adjustment shaft; 13. Hydrochloric acid conduit; 14. Ammonia exhaust pipe; 15. Nozzle; 16. Drain pipe; 1601. Water outlet; 17. Connecting plate; 18. Limit block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] Please see Figures 1-5 The present invention provides the following technical solution:

[0028] Example 1

[0029] To address the issues of poor gas mixing and low efficiency in existing hydrochloric acid-ammonia corrosion test chambers, the following technical solution is proposed. Please refer to the following for details. Figure 1 , Figure 2 , Figure 3 , Figure 4 The hydrochloric acid and ammonia corrosion test chamber includes a test chamber body 1, a support base 2, and an exhaust gas treatment box 8. The test chamber body 1 and the exhaust gas treatment box 8 are respectively connected to the top two sides of the support base 2. The interior of the test chamber body 1 is coated with an anti-corrosion layer 101, which is a polytetrafluoroethylene (PTFE) coating. The two ends of the outer side of the test chamber body 1 are respectively connected to a hydrochloric acid injection pipe 3 and an ammonia injection pipe 4. Corrosion-resistant pressure reducing valves 5 are installed on both the hydrochloric acid injection pipe 3 and the ammonia injection pipe 4. One end of the hydrochloric acid injection pipe 3 and the ammonia injection pipe 4 extends into the interior of the test chamber body 1 and is respectively connected to a hydrochloric acid conduit 13 and an ammonia exhaust pipe 14. Spray nozzles 15 are evenly connected to one side of both the hydrochloric acid conduit 13 and the ammonia exhaust pipe 14. A connecting plate 17 is fixed to one end of both the hydrochloric acid conduit 13 and the ammonia exhaust pipe 14.

[0030] During use, the test sample is placed into the main body 1 of the test chamber. Then, hydrochloric acid gas and ammonia gas are injected into the main body 1 of the test chamber through the hydrochloric acid injection pipe 3 and the ammonia gas injection pipe 4. The gas is then injected into the hydrochloric acid conduit 13 and discharged from multiple nozzles 15, thereby allowing the ammonia gas and hydrochloric acid gas to mix thoroughly and form a uniform corrosive gas environment. The inner wall of the main body 1 of the test chamber is coated with an anti-corrosion layer 101, which can enhance the anti-corrosion performance of the main body 1 of the test chamber and extend its service life. The changes of the test sample are observed and relevant data are recorded. After the experiment is completed, the test sample is analyzed to evaluate its rust prevention ability and anti-corrosion performance.

[0031] An adjustment mechanism 12 is provided on one side of the top of the test chamber body 1. The adjustment mechanism 12 includes a support plate 1202, which is fixed to the top of the test chamber body 1. A rotary motor 1201 is connected to the outside of the support plate 1202, and a rotary shaft 1203 is fixed to the output shaft end of the rotary motor 1201. A turntable 1204 is fixed to one end of the rotary shaft 1203, and a swing column 1205 is fixed to one end of the turntable 1204. A hinged arm 1206 is movably connected to the outside of the swing column 1205. Furthermore, one end of the hinge arm 1206 is movably connected to a toothed plate transmission component 1207, which includes two transmission toothed plates and a connecting column. The connecting column connects the two transmission toothed plates, and a limit block 18 passes through the inside of the connecting column. The limit block 18 is fixed to the outside of the test chamber body 1. Both ends of one side of the toothed plate transmission component 1207 are meshed with gears 1208, and one end of each gear 1208 is fixed with a forward and reverse adjustment shaft 1209. One end of each forward and reverse adjustment shaft 1209 is fixedly connected to the connecting plate 17.

[0032] In this embodiment, the drive motor 1201 drives the rotating shaft 1203 to rotate, thereby driving the turntable 1204 and the swing column 1205 to rotate. The swing column 1205 drives the hinge arm 1206 to move up and down, and drives the toothed plate transmission component 1207 to move synchronously. During the up and down movement of the toothed plate transmission component 1207, it meshes with the gear 1208, causing the gear 1208 to rotate in both directions. This causes the forward and reverse adjustment shaft 1209 to rotate synchronously, and drives the connecting plate 17, the hydrochloric acid conduit 13, and the ammonia emission pipe 14 to rotate synchronously. This, in turn, adjusts the jet direction of the nozzle 15, further promoting airflow distribution, so that the mixed gas can quickly reach the set concentration, improving the accuracy and reliability of the test.

[0033] Example 2

[0034] This embodiment differs from Embodiment 1 in that it utilizes an airflow disturbance component to achieve thorough agitation and mixing of the exhaust gas and spray liquid, thereby improving exhaust gas treatment efficiency. Therefore, the following technical solution is disclosed; please refer to the details. Figure 1 , Figure 2 , Figure 5 A U-shaped air pipe 6 is connected to the outside of the test chamber body 1, and a connecting pipe 7 is connected to one side of the U-shaped air pipe 6. An air valve is installed on the connecting pipe 7. One end of the connecting pipe 7 extends into the interior of the exhaust gas treatment box 8. An inlet pipe 10 is connected to the top of the outside of the exhaust gas treatment box 8, and one end of the inlet pipe 10 is connected to an external water supply device. An exhaust pipe 9 is connected to the outside of the exhaust gas treatment box 8 below the inlet pipe 10. A rectangular groove 801 is provided on the outside of the exhaust gas treatment box 8, and a servo motor 11 is connected inside the rectangular groove 801.

[0035] In use, open the air valve on the connecting pipe 7 to allow the experimental waste gas to be injected into the connecting pipe 7 from the U-shaped air pipe 6, and then further introduced into the waste gas treatment box 8. Then connect the liquid inlet pipe 10 to the external water supply equipment, and inject the spray liquid into the liquid inlet pipe 10, and then inject it into the drain pipe 16. The liquid is then sprayed evenly from multiple water outlets 1601. The spray liquid can be used to contact the waste gas, accelerate the absorption of hydrochloric acid and delayed oxidants in the waste gas, and remove particulate matter in the waste gas, thereby achieving the effect of gas purification and avoiding direct discharge of pollutants into the air.

[0036] The exhaust gas treatment box 8 is equipped with an airflow disturbance component, which includes a stirring shaft 1101. The stirring shaft 1101 is fixed to one end of the servo motor 11. A connecting sleeve 1102 is uniformly fixed on the outside of the stirring shaft 1101. Multiple airflow disturbance plates 1103 are uniformly connected to the outside of the connecting sleeve 1102. Multiple airflow disturbance plates 1103 are arranged on the outside of the connecting sleeve 1102 and are arranged in a ring. Multiple through holes 1104 with triangular cross sections are uniformly arranged on the airflow disturbance plates 1103.

[0037] In this embodiment, the servo motor 11 is driven to rotate the stirring shaft 1101, thereby rotating multiple connecting sleeves 1102 and airflow disturbance plate 1103, which in turn agitates the airflow and spray liquid, accelerating the purification efficiency.

[0038] 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 mechanical connection or an electrical 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.

[0039] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hydrochloric acid and ammonia corrosion test chamber, comprising a test chamber body (1), a support base (2), and an exhaust gas treatment box (8), wherein the test chamber body (1) and the exhaust gas treatment box (8) are respectively connected to the top two sides of the support base (2); Its features are: The outer ends of the test chamber body (1) are respectively connected to hydrochloric acid injection pipe (3) and ammonia injection pipe (4). Both the hydrochloric acid injection pipe (3) and the ammonia injection pipe (4) are equipped with corrosion-resistant pressure reducing valves (5). One end of the hydrochloric acid injection pipe (3) and the ammonia injection pipe (4) extends into the interior of the test chamber body (1) and is respectively connected to a hydrochloric acid conduit (13) and an ammonia discharge pipe (14). An adjustment mechanism (12) is provided on one side of the top of the test chamber body (1). A U-shaped gas pipe (6) is connected to the outer side of the test chamber body (1), and one side of the U-shaped gas pipe (6) is connected to a... A connecting pipe (7) is provided with an air valve. One end of the connecting pipe (7) extends into the interior of the waste gas treatment box (8). An inlet pipe (10) is connected to the top of the outer side of the waste gas treatment box (8), and one end of the inlet pipe (10) is connected to an external water supply device. An exhaust pipe (9) is connected to the outer side of the waste gas treatment box (8) below the inlet pipe (10). A rectangular groove (801) is provided on the outer side of the waste gas treatment box (8), and a servo motor (11) is connected inside the rectangular groove (801). An airflow disturbance component is provided inside the waste gas treatment box (8).

2. The hydrochloric acid-ammonia corrosion test chamber according to claim 1, characterized in that: The hydrochloric acid conduit (13) and the ammonia discharge pipe (14) are both uniformly connected to one side of a nozzle (15), and a connecting plate (17) is fixed to one end of the hydrochloric acid conduit (13) and the ammonia discharge pipe (14).

3. The hydrochloric acid-ammonia corrosion test chamber according to claim 1, characterized in that: The interior of the test chamber body (1) is coated with an anti-corrosion layer (101), and the anti-corrosion layer (101) is a polytetrafluoroethylene (PTFE) coating.

4. The hydrochloric acid-ammonia corrosion test chamber according to claim 1, characterized in that: The adjustment mechanism (12) includes a support plate (1202), which is fixed to the top of the test chamber body (1). A rotary motor (1201) is connected to the outside of the support plate (1202), and a rotary shaft (1203) is fixed to the output shaft end of the rotary motor (1201). A turntable (1204) is fixed to one end of the rotary shaft (1203), and a swing column (1205) is fixed to one end of the turntable (1204). A hinge arm (1206) is movably connected to the outside of the swing column (1205), and a toothed plate transmission component (1207) is movably connected to one end of the hinge arm (1206).

5. The hydrochloric acid-ammonia corrosion test chamber according to claim 4, characterized in that: The toothed plate transmission component (1207) includes two transmission toothed plates and a connecting column. The connecting column connects the two transmission toothed plates. A limiting block (18) passes through the inside of the connecting column, and the limiting block (18) is fixed to the outside of the test chamber body (1). Gears (1208) are meshed at both ends of one side of the toothed plate transmission component (1207), and a positive and negative adjustment shaft (1209) is fixed at one end of each gear (1208). One end of each positive and negative adjustment shaft (1209) is fixedly connected to the connecting plate (17).

6. The hydrochloric acid-ammonia corrosion test chamber according to claim 1, characterized in that: The airflow disturbance component includes a stirring shaft (1101), which is fixed to one end of a servo motor (11). A connecting sleeve (1102) is uniformly fixed on the outside of the stirring shaft (1101), and multiple airflow disturbance plates (1103) are uniformly connected on the outside of the connecting sleeve (1102).

7. The hydrochloric acid-ammonia corrosion test chamber according to claim 6, characterized in that: The outer side of the connecting sleeve (1102) of the airflow disturbance plate (1103) is provided with multiple holes in a ring shape, and multiple through holes (1104) with triangular cross sections are uniformly provided on the airflow disturbance plate (1103).

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