Multi-channel double-circulation gas corrosion test device

Abstract

SOLUTION: A multi-channel double-circulation gas corrosion test device comprises a to-be-detected module, an acid detection module, an alkali detection module, a controller and a waste gas treatment module; the waste gas treatment module comprises a barrel body; the bottom of the barrel body is respectively communicated with pipeline exhaust valves of the acid detection module and the alkali detection module through an acid gas pipe and an alkali gas pipe; the top of the barrel body is communicated with a gas outlet pipe; a rotating shaft is rotationally connected into the barrel body; and the surface of the rotating shaft is fixedly connected with a spiral blade and a group of pull rods.EFFECT: Waste gas is introduced into the barrel body to be absorbed to form an acidic water body or an alkaline water body, so that waste gas generated by subsequent detection work can be neutralized, acid waste gas and alkali waste gas generated by the acid detection module and the alkali detection module are subjected to an internal neutralization reaction, the waste gas treatment effect is greatly improved, and additional acid or alkali does not need to be added. The operation is simpler, and the cost of the corrosion test is reduced.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to the technical field of corrosion testing, and more particularly to a multi-channel dual circulation gas corrosion testing apparatus. [Background technology]

[0002] Corrosion testing is the process of detecting and recording the loss or destruction of materials caused by environmental factors through specified equipment, thereby determining the corrosion resistance of the material. With the rapid development of industrial technology, many products, such as some plastics, rubber, metal materials, and electronic components, require corrosion testing before shipment. Typically, the test item is exposed to an acidic gas environment (e.g., hydrogen chloride gas) and an alkaline gas environment (e.g., ammonia gas), and the change in gas concentration determines whether the test item is corroded.

[0003] Chinese Patent Application No. CN117517182A discloses a dual circulation corrosion testing system. Its key technical solution includes a detection target module, an alkali detection module, an acid detection module, a controller, a neutralization bucket, and a mixing module. The alkali detection module and acid detection module are connected to the detection target module, the controller is attached to the alkali detection module and the acid detection module, the two neutralization buckets are fixed respectively in the alkali detection module and the acid detection module, and the two mixing modules are fixed respectively in the alkali detection module and the acid detection module. Closed-loop control is achieved by gas flow mixing, mixing corrosive gases into the circulating air, and closed-loop concentration control is achieved by the first and second sensors. Precise gas concentration control is achieved, with the supply gas controlled by a make-up valve and feedback via the first and second sensors to dynamically control the concentration in real time.

[0004] However, in the above-mentioned technology, one neutralization bucket is provided for each of the acid detection module and alkali detection module to treat the exhaust gas against acid gas or alkali gas. However, before use, alkali and acid are added to the two neutralization buckets, respectively, and then the acid exhaust gas and alkali exhaust gas are neutralized. This not only makes the handling cumbersome, but also consumes additional acid or alkali, which increases the cost of the corrosion test.

[0005] Therefore, the present invention provides a multi-channel dual circulation gas corrosion testing apparatus. Summary of the Invention [Means for solving the problem]

[0006] To make up for the deficiencies of the prior art, at least one technical problem proposed in the background art is solved.

[0007] The technical means used in the present invention to solve the above technical problems is a multi-channel dual circulation gas corrosion testing device, comprising: a detection object module, an acid detection module, an alkali detection module, a controller and an exhaust gas treatment module; The exhaust gas treatment module includes a bucket body, the bottom of which is connected to the piping gas exhaust valves of the acid detection module and the alkali detection module via acid gas piping and alkali gas piping, respectively; the top of the bucket body is connected to a gas exhaust piping, and the gas exhaust piping is equipped with a valve; a rotating shaft is rotatably connected inside the bucket body and is driven by a motor; a spiral blade and a set of pull rods are fixedly connected to the surface of the rotating shaft, the length of the pull rod is greater than the radius of the spiral blade; and an acid exhaust gas sensor and an alkali exhaust gas sensor are installed inside the top of the bucket body.

[0008] Preferably, the detection target module is provided as a set, and the detection target module includes a storage air bag, an air bag gas supply valve, a two-position three-way valve, and an air bag gas exhaust valve; The acid detection module has the same structure as the alkali detection module, and both the acid detection module and the alkali detection module include a first connecting pipe, a first transport pipe, a second transport pipe, a pressure sensor, a piping gas supply valve, a circulation pump, a second connecting pipe, a first concentration sensor, a refill valve, a mixing device, a second concentration sensor, and a piping gas exhaust valve.

[0009] Preferably, a water supply pipe and a water outlet pipe are connected to the top and bottom of the bucket body, respectively, and valves are provided on the water supply pipe and the water outlet pipe. A pH sensor is fixedly connected to the side of the bucket body, and the detection end of the pH sensor is inserted into the bucket body.

[0010] Preferably, the bucket body and the gas discharge pipe are connected to each other via a gas discharge casing, absorbent cotton is provided within the gas discharge casing, a conduit is connected between the gas discharge casing and the side of the bucket body, water-conducting cotton is provided within the conduit, one end of the water-conducting cotton extends into the bucket body, and the other end contacts the absorbent cotton.

[0011] Preferably, a retaining plate and an elastic sheet are fixedly connected to the upper and lower sides of the absorbent cotton, respectively, and both the retaining plate and the elastic sheet are fixedly connected inside the gas discharge casing. A spring is fixedly connected between the retaining plate and the elastic sheet, and the spring passes through the absorbent cotton. Each of the retaining plates has a set of through holes on its surface, and each of the elastic sheets has a set of through grooves on its surface. The center of the elastic sheet protrudes downward into the bucket body, and a roller is rotatably connected to the top of the rotating shaft via a holder.

[0012] Preferably, a pair of retaining rings are provided on the inner wall surface of each of the bucket bodies, the inner side of the retaining rings being lower than the outer side, and the surface of the retaining rings being provided with notches.

[0013] Preferably, the notches of the adjacent retaining rings are alternately provided.

[0014] Preferably, a set of damping blocks is uniformly provided under each of the retaining rings, and a wavy elastic thread is fixedly connected between adjacent damping blocks.

[0015] Preferably, a magnetic body is fixedly connected to one end of the pull rod that extends below the retaining ring, a guide block is fixedly connected to the center of the elastic thread, and the guide block and the magnetic body attract each other when they come close to each other.

[0016] Preferably, a receiving chamber is opened in the damping block, a rubber membrane is fixedly connected in the receiving chamber, an elastic member is fixedly connected between the rubber membrane and the receiving chamber, the ends of the elastic thread extend into the receiving chamber and are fixedly connected to the rubber membrane, a set of guide holes is provided on the surface of the damping block, and the guide holes and the receiving chamber are connected to each other. [Effects of the Invention]

[0017] First, the multi-channel dual circulation gas corrosion testing device of the present invention, whether performing acid or alkali detection, allows exhaust gas to flow into the bucket body for absorption, forming an acidic water body or an alkaline water body, and then neutralizing the exhaust gas generated in the subsequent detection work, thereby allowing an internal neutralization reaction to occur between the acidic exhaust gas and alkaline exhaust gas generated in the acid detection module and alkaline detection module, greatly improving the exhaust gas treatment effect, while eliminating the need to add acid or alkali, making it easier to handle and reducing the cost of corrosion testing. Second, in the multi-channel double circulation gas corrosion testing device of the present invention, the motor rotates the rotating shaft, the spiral blade and the pull rod to stir the water body and accelerate the process of exhaust gas dissolution into the water. As the spiral blade rotates, it pushes the water body downward, generating a downward water flow in the middle of the bucket, which then rises along the side walls of the bucket, forming a circulation process in the water body and promoting the uniform dissolution of exhaust gas in each part of the water body. At the same time, the exhaust gas bubbles are affected by the circulating water body, and the water flow moving downward in the middle of the bucket transports the air bubbles downward, which then gradually rises along the rising water flow on the side walls of the bucket, extending the residence time of the air bubbles in the water body and increasing the level of absorption of exhaust gas by the water body. The pull rod disperses the air bubbles as it rotates, further improving the efficiency of exhaust gas dissolution. [Brief explanation of the drawings]

[0018] The present invention will be further described below with reference to the drawings. [Figure 1] 1 is a structural schematic diagram of the present invention; [Figure 2] 1 is a structural schematic diagram of an exhaust gas treatment module according to the present invention; [Figure 3] 2 is a schematic diagram of the internal structure of the bucket body according to the present invention. FIG. [Figure 4] FIG. 4 is a partial enlarged view of a portion A in FIG. 3. [Figure 5] 2 is a schematic diagram showing the structure of the retaining plate, absorbent cotton and elastic sheet according to the present invention; FIG. [Figure 6] 1 is a structural schematic diagram of a spiral blade and a pull rod according to the present invention; FIG. [Figure 7] 1 is a structural schematic diagram of a retaining ring according to the present invention. FIG. [Figure 8] 1 is a cross-sectional view of a bucket body of the present invention. [Figure 9] FIG. 9 is a partial enlarged view of a portion B in FIG. 8. [Figure 10] FIG. 10 is a partial enlarged view of a portion C in FIG. 9. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to easily understand the technical means, creative features, objectives and effects achieved by the present invention, the present invention will be further described in conjunction with the following specific embodiments.

[0020] (Experimental Example 1) As shown in FIGS. 1 to 7, the multi-channel double circulation gas corrosion testing device according to the embodiment of the present invention includes a detection target module 1, an acid detection module 2, an alkali detection module 3, a controller 4, and an exhaust gas treatment module. The detection object module 1 is provided as a set, and the detection object module 1 includes a storage air bag 101, an air bag gas supply valve 102, a two-position three-way valve 103, and an air bag gas exhaust valve 104, The acid detection module 2 has the same structure as the alkali detection module 3, and both the acid detection module 2 and the alkali detection module 3 include a first connecting pipe 201, a first transport pipe 202, a second transport pipe 203, a pressure sensor 204, a piping gas supply valve 205, a circulation pump 206, a second connecting pipe 207, a first concentration sensor 208, a supply valve 209, a mixing device 210, a second concentration sensor 211, and a piping gas exhaust valve 212.

[0021] The specific connection method and operation flow of the detection target module 1, acid detection module 2, alkali detection module 3 and controller 4 of the present invention can refer to the technical content disclosed in the double circulation corrosion test system of CN117517182A, and will not be further described here. However, the acid gas and alkaline gas used for detection are hydrogen chloride gas and ammonia gas, respectively.

[0022] The exhaust gas treatment module includes a bucket body 5, which contains clean water. The bottom of the bucket body 5 is connected to the gas exhaust valves 212 of the acid detection module 2 and the alkali detection module 3 via an acid gas pipe 6 and an alkali gas pipe 7, respectively. The top of the bucket body 5 is connected to a gas exhaust pipe 8, which is equipped with a valve. A rotating shaft 9 is rotatably connected within the bucket body 5 and is driven by a motor 10. A spiral blade 11 and a set of pull rods 12 are fixedly connected to the surface of the rotating shaft 9, and the length of the pull rod 12 is greater than the radius of the spiral blade 11. An acid exhaust gas sensor and an alkali exhaust gas sensor are installed within the top of the bucket body 5.

[0023] After the primary acid or alkali detection operation is completed, the pipe gas exhaust valve 212 of the acid detection module 2 or alkali detection module 3 is opened, and the acid exhaust gas or alkali exhaust gas flows into the bucket body 5 through the acid gas pipe 6 or alkali gas pipe 7, forming bubbles and continuing to rise. The motor 10 rotates the rotating shaft 9, the spiral blade 11, and the pull rod 12, stirring the water body and accelerating the process of the exhaust gas dissolving in water. In addition, as the spiral blade 11 rotates, the water body is pushed downward, and further downward water is poured into the middle of the bucket body 5. The water flows upward along the side wall of the bucket body 5, forming a circulation process of the water body and promoting uniform dissolution of the exhaust gas in each part of the water body. The air bubbles in the exhaust gas are affected by the circulating water body, and the water flow moving downward in the middle of the bucket body 5 transports the air bubbles downward. The air bubbles then gradually float up as the water flow rises on the side wall of the bucket body 5, lengthening the residence time of the air bubbles inside the water body and increasing the level of absorption of the exhaust gas by the water body. The pull rod 12 disperses the air bubbles as it rotates, further improving the efficiency of dissolving the exhaust gas.

[0024] When the present invention is used, whether acid or alkali detection is performed, the exhaust gas flows into the bucket body 5 and is absorbed, forming an acidic or alkaline water body, which can then neutralize the exhaust gas generated in the subsequent detection operation, thereby causing an internal neutralization reaction between the acidic exhaust gas and alkaline exhaust gas generated in the acid detection module 2 and alkaline detection module 3, greatly improving the effect of exhaust gas treatment, while eliminating the need to add acid or alkali, making handling easier and reducing the cost of corrosion testing.

[0025] It is worth mentioning that in the treatment stage, the valve of the gas exhaust pipe 8 is always in a closed state, and if there is a large amount of acid exhaust gas or alkaline exhaust gas generated and the exhaust gas cannot be completely neutralized after entering the bucket body 5, the bucket body 5 can be used as a temporary storage container. For example, after the first acid detection operation, the water in the bucket body 5 absorbs a small amount of acid exhaust gas and becomes acidic. When the next alkali detection operation is performed, if the amount of alkaline exhaust gas generated is greater than the amount of acid exhaust gas generated last time, the alkaline exhaust gas can be introduced into the bucket body 5 for neutralization, and then the excess alkaline exhaust gas can be stored. Some of the exhaust gas dissolves in water, and some is stored in the upper part of the bucket body 5. If the next time an alkali is detected, the alkaline exhaust gas continues to be stored, and the next time an acid is detected, a neutralization process can be performed. During the process, the action of the spiral blade 11 and the pull rod 12 allows the circulating water body to continuously bring the exhaust gas stored in the upper part of the bucket into the water, increasing the efficiency of absorption by water and allowing it to constantly participate in the neutralization reaction. When the acid exhaust gas sensor or alkali exhaust gas sensor on the upper part of the bucket 5 detects that the exhaust gas concentration has dropped to a certain threshold, the gas discharge pipe 8 can be opened to discharge the exhaust gas.

[0026] The number of exhaust gas treatment modules can be set according to actual needs. If the number of acid or alkali detections is always high and the acid or alkali exhaust gas generated is always excessive, multiple exhaust gas treatment modules can be installed to store the excess exhaust gas and increase the maximum storage capacity of the exhaust gas.

[0027] A water supply pipe 13 and a water outlet pipe 14 are connected to the top and bottom of the bucket body 5, respectively, and valves are provided on the water supply pipe 13 and the water outlet pipe 14. A PH sensor 15 is fixedly connected to the side of the bucket body 5, and the detection end of the PH sensor 15 is inserted into the bucket body 5. The pH sensor 15 monitors the hydrogen ion index of the water body inside the bucket body 5 in real time. When the water body becomes neutral after the exhaust gas treatment module has operated several times, the water outlet pipe 14 is opened to discharge the water body in a timely manner, and new clean water is injected through the water supply pipe 13. This prevents the remaining chloride ion and ammonium ion concentrations in the water body from being high, thereby preventing a decrease in the exhaust gas dissolution efficiency.

[0028] The bucket body 5 and the gas discharge pipe 8 are connected to each other via a gas discharge casing 16, which is provided with absorbent cotton 17, which may be made of sponge or the like. A conduit 18 is connected between the gas discharge casing 16 and the side of the bucket body 5, and a water-conducting cotton is provided within the conduit 18, with one end extending into the bucket body 5 and the other end contacting the absorbent cotton 17. The water-conducting cotton conducts water from within the bucket body 5 into the absorbent cotton 17, filling the absorbent cotton 17. When the exhaust gas from the bucket body 5 is discharged through the gas discharge casing 16 and the gas discharge pipe 8, the absorbent cotton 17 can adsorb and capture acid gases and alkaline gases remaining in the exhaust gas, further reducing the content of harmful gases in the exhaust gas and mitigating environmental pollution.

[0029] A retaining plate 20 and an elastic sheet 21 are fixedly connected to the upper and lower sides of the absorbent cotton 17, respectively, and the retaining plate 20 and the elastic sheet 21 are both fixedly connected within the gas discharge casing 16. The elastic sheet 21 is a metal elastic sheet 21. A spring 22 is fixedly connected between the retaining plate 20 and the elastic sheet 21, and the spring 22 passes through the absorbent cotton 17. Each of the retaining plates 20 has a set of through holes 23 on its surface, and each of the elastic sheets 21 has a set of through grooves 24 on its surface. The center of the elastic sheet 21 protrudes downward into the bucket body 5. In order to easily replace the absorbent cotton 17 if it is damaged, the gas discharge casing 16, the absorbent cotton 17, the retaining plate 20 and the elastic sheet 21 may be fixedly connected in a detachable manner. A roller 26 is rotatably connected to the top of the rotating shaft 9 via a holder 25. When the rotating shaft 9 rotates, the holder 25 rotates together with it, and the roller 26 moves below the gas discharge casing 16. The roller 26 rolls on the surface of the elastic sheet 21, causing the elastic sheet 21 to expand upward, pushing out the adsorbent cotton 17, pushing out the moisture inside the adsorbent cotton 17 and returning the moisture to the inside of the bucket body 5. After the roller 26 passes over the elastic sheet 21, the spring 22 resets the elastic sheet 21 downward, and the adsorbent cotton 17 is reset accordingly. The water-conducting cotton then conducts moisture back into the adsorbent cotton 17, so that the adsorbent cotton 17 forms a water absorption and extrusion circulation process, constantly renewing the moisture inside the adsorbent cotton 17 and preventing a decrease in the adsorption effect due to saturation of the amount of acidic or alkaline gas adsorbed inside it, thereby further improving the efficiency of exhaust gas purification.

[0030] A set of retaining rings 27 is provided on the inner wall surface of each of the bucket body 5, the inner sides of which are lower than the outer sides, and the surfaces of the retaining rings are provided with notches 28. The notches 28 of adjacent retaining rings 27 are alternately arranged, so that exhaust gas bubbles are blocked by the retaining rings 27 as they rise up on the inner wall of the bucket body 5, and then move horizontally in the circumferential direction of the bucket body 5 below the retaining rings 27 until they reach the notches 28, where they continue to rise through the notches 28 before being blocked by the next retaining ring 27. The blocking effect of the multiple retaining rings 27 slows the rising speed of the bubbles and prolongs the contact time between the bubbles and the water body, allowing the water body to further absorb and dissolve the acid or alkali gas in the bubbles.

[0031] Example 2 As shown in Figures 8 to 10, in another embodiment of the present invention, compared to Example 1, a set of damping blocks 29 is uniformly provided on the underside of each of the retaining rings 27, and a wavy elastic thread 30 is fixedly connected between adjacent damping blocks 29. By providing a plurality of damping blocks 29 and elastic threads 30, the roughness of the underside of the retaining rings 27 is increased, and the retention effect of air bubbles is improved so that the bubbles adhere to the surface of the elastic threads 30 between the damping blocks 29, thereby slowing down the speed of the bubbles moving horizontally and further extending the contact time between the bubbles and the water body.

[0032] A magnetic body 31 is fixedly connected to one end of the pull rod 12 that extends below the retaining ring 27, and a guide block 32 is fixedly connected to the center of the elastic thread 30, and the guide block 32 and the magnetic body 31 attract each other when they approach each other. The magnetic body 31 rotates with the pull rod 12, and when the magnetic body 31 approaches the guide block 32, an attractive force is generated, deforming the elastic thread 30 and causing it to constantly swing up and down due to its own elastic force. The elastic thread 30 cuts and breaks the air bubbles between the damping blocks 29, reducing the size of the bubbles and further increasing the contact area between the bubbles and water, thereby improving dissolution efficiency.

[0033] A storage chamber 33 is opened in the damping block 29, a rubber membrane 34 is fixedly connected in the storage chamber 33, and an elastic member is fixedly connected between the rubber membrane 34 and the storage chamber 33, and the ends of the elastic thread 30 extend into the storage chamber 33 and are fixedly connected to the rubber membrane 34, and a set of guide holes 35 is provided on the surface of the damping block 29, and the guide holes 35 and the storage chamber 33 are connected to each other. When the magnetic material 31 attracts the guide block 32, the elastic thread 30 pulls and deforms the rubber membrane 34, and the rubber membrane 34 then pushes the water inside the storage chamber 33 out through multiple guide holes 35, causing the air bubbles between the damping blocks 29 to be further impact-crushed by the water flow, increasing the fineness of the bubbles.The elastic member then pulls and resets the rubber membrane 34, and the storage chamber 33 re-absorbs water through the guide holes 35.The storage chamber 33 continues to circulate like a water suction fountain, increasing the fluidity of the water body below the retaining ring 27 and improving the uniformity of the exhaust gas absorption by the water body.

[0034] The operating principle is as follows: after the primary acid or alkali detection operation is completed, the pipe gas exhaust valve 212 of the acid detection module 2 or alkali detection module 3 is opened, and the acid exhaust gas or alkali exhaust gas flows into the bucket body 5 through the acid gas pipe 6 or alkali gas pipe 7, forming bubbles that continue to rise. The motor 10 rotates the rotating shaft 9, the spiral blade 11, and the pull rod 12, stirring the water body and accelerating the process of the exhaust gas dissolving in water. When the spiral blade 11 rotates, it pushes the water body downward, further reaching the middle of the bucket body 5. A downward water flow is generated, and the water flow rises along the side wall of the bucket body 5, forming a water circulation process that promotes uniform dissolution of the water body into the exhaust gas at each position. In addition, the exhaust gas bubbles are affected by the circulating water body, and the water flow moving down the middle of the bucket body 5 transports the air bubbles downward. The air bubbles then gradually float up as they follow the upward water flow on the side wall of the bucket body 5, lengthening the residence time of the air bubbles inside the water body and increasing the level of absorption of the exhaust gas by the water body. The pull rod 12 disperses the air bubbles as it rotates, further improving the efficiency of exhaust gas dissolution. As exhaust gas bubbles rise to the surface of the inner wall of the bucket body 5, they are blocked by the retaining ring 27, and then move horizontally around the periphery of the bucket body 5 below the retaining ring 27 until they reach the notch 28, where they continue to rise through the notch 28 and are blocked by another retaining ring 27. The blocking action of the retaining rings 27 slows the rising speed of the bubbles, prolonging the contact time between the bubbles and the water body, allowing the water body to further absorb and dissolve the acid or alkali gas in the bubbles. The pH sensor 15 monitors the hydrogen ion index of the water body inside the bucket body 5 in real time. After the exhaust gas treatment module has operated several times, when the water body becomes neutral, the outlet pipe 14 is opened to discharge the water body in a timely manner, and fresh clean water is introduced through the water supply pipe 13 to prevent the remaining chloride ion and ammonium ion concentrations in the water body from being high, thereby preventing a decrease in the exhaust gas dissolution efficiency. The water-conducting cotton conducts the water inside the bucket body 5 into the absorbent cotton 17, filling the absorbent cotton 17 with moisture.Furthermore, when the exhaust gas inside the bucket body 5 is discharged through the gas discharge casing 16 and the gas discharge piping 8, the absorbent cotton 17 can adsorb and capture the acid gases and alkaline gases remaining in the exhaust gas, further reducing the content of harmful gases in the exhaust gas and reducing environmental pollution. When the rotating shaft 9 rotates, the holder 25 rotates together, and the roller 26 moves below the gas discharge casing 16. The roller 26 rolls on the surface of the elastic sheet 21, causing the elastic sheet 21 to expand upward, pushing out the absorbent cotton 17, and squeezing out the moisture inside the absorbent cotton 17, causing the moisture to flow back into the bucket body 5. After the roller 26 passes over the elastic sheet 21, the spring 22 resets the elastic sheet 21 downward, and the absorbent cotton 17 is also reset accordingly. The water-conducting cotton then conducts moisture back into the absorbent cotton 17, so that the absorbent cotton 17 forms a water absorption and extrusion cycle, constantly renewing the moisture inside the absorbent cotton 17. This prevents the absorbent cotton 17 from reaching saturation in its adsorption capacity for acidic or alkaline gases, thereby further improving the efficiency of purifying exhaust gases. By providing multiple damping blocks 29 and elastic threads 30, the roughness of the underside of the retaining ring 27 is increased, and the retention effect of the bubbles is improved so that the bubbles adhere to the surface of the elastic threads 30 between the damping blocks 29, reducing the speed of the bubbles moving horizontally and further extending the contact time between the bubbles and the water body. The magnetic body 31 rotates together with the pull rod 12. When the magnetic body 31 approaches the guide block 32, an attractive force is generated, deforming the elastic thread 30, causing the elastic thread 30 to constantly swing up and down due to its own elastic force. The elastic thread 30 cuts and breaks the air bubbles between the damping blocks 29, reducing their size and further increasing the contact area between the bubbles and the water, thereby improving dissolution efficiency. When the magnetic body 31 attracts the guide block 32, the elastic thread 30 pulls and deforms the rubber membrane 34. The rubber membrane 34 then pushes the water in the storage chamber 33 out through the multiple guide holes 35, causing the air bubbles between the damping blocks 29 to be further impact-broken by the water flow, making the bubbles finer. The elastic member then pulls and resets the rubber membrane 34, allowing the storage chamber 33 to re-absorb water through the guide holes 35. The storage chamber 33 continues to circulate like a water suction fountain, increasing the fluidity of the water below the retaining ring 27 and improving the uniformity of the water's absorption of exhaust gases.

[0035] The above terms "front," "rear," "left," "right," "top," and "bottom" are all based on Figure 1 in the specification drawings, and are inferred sequentially based on the viewpoint of human observation, with the side of the device facing the observer being defined as "front" and the side to the left of the observer being defined as "left."

[0036] In describing the present invention, the orientations or positional relationships indicated by terms such as "center," "vertical," "horizontal," "front," "rear," "left," "right," "longitudinal," "horizontal," "top," "bottom," "inside," and "outside" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate the description of the present invention. They do not indicate or imply that the indicated devices or elements must be configured and operated in a specific orientation or in a specific direction, but are intended to simplify the description and should not be understood as limiting the scope of protection of the present invention.

[0037] The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. The present invention also allows for various modifications and improvements without departing from the spirit and scope of the present invention, and all such modifications and improvements fall within the scope of the present invention for which protection is sought. The scope of protection of the claims of the present invention is defined by the appended claims and their equivalents. [Explanation of symbols]

[0038] 1, detection target module; 101, storage air bag; 102, air bag gas supply valve; 103, two-position three-way valve; 104, air bag gas discharge valve; 2, acid detection module; 201, first connecting pipe; 202, first transport pipe; 203, second transport pipe; 204, pressure sensor; 205, piping gas supply valve; 206, circulation pump; 207, second connecting pipe; 208, first concentration sensor; 209, make-up valve; 210, mixing device; 211, second concentration sensor; 212, piping gas discharge valve; 3, alkali detection module; 4, controller; 5, bucket body; 6 , Acid gas piping; 7, Alkaline gas piping; 8, Gas exhaust piping; 9, Rotating shaft; 10, Motor; 11, Spiral blade; 12, Pull rod; 13, Water supply pipe; 14, Water outlet pipe; 15, PH sensor; 16, Gas exhaust casing; 17, Absorbent cotton; 18, Conduit; 20, Retaining plate; 21, Elastic sheet; 22, Spring; 23, Through hole; 24, Through groove; 25, Holder; 26, Roller; 27, Retaining ring; 28, Notch; 29, Damping block; 30, Elastic thread; 31, Magnetic material; 32, Guide block; 33, Storage chamber; 34, Rubber membrane; 35, Guide hole.

Claims

1. A multi-channel dual circulation gas corrosion testing device comprising a detection target module (1), an acid detection module (2), an alkali detection module (3), a controller (4) and an exhaust gas treatment module, The exhaust gas treatment module includes a bucket body (5), the bottom of which is connected to the gas exhaust valves (212) of the acid detection module (2) and the alkali detection module (3) via an acid gas pipe (6) and an alkali gas pipe (7), respectively; a gas exhaust pipe (8) is connected to the top of the bucket body (5), and a valve is provided on the gas exhaust pipe (8); a rotating shaft (9) is rotatably connected within the bucket body (5), and the rotating shaft (9) is driven by a motor (10); a spiral blade (11) and a set of pull rods (12) are fixedly connected to the surface of the rotating shaft (9), the length of the pull rod (12) is greater than the radius of the spiral blade (11); and an acid exhaust gas sensor and an alkali exhaust gas sensor are provided within the top of the bucket body (5).

2. The detection target module (1) is provided as a set, and the detection target module (1) includes a storage air bag (101), an air bag gas supply valve (102), a two-position three-way valve (103), and an air bag gas exhaust valve (104); 2. The multi-channel dual circulation gas corrosion testing apparatus according to claim 1, wherein the acid detection module (2) has the same structure as the alkali detection module (3), and the acid detection module (2) and the alkali detection module (3) each include a first connecting pipe (201), a first transport pipe (202), a second transport pipe (203), a pressure sensor (204), a piping gas supply valve (205), a circulation pump (206), a second connecting pipe (207), a first concentration sensor (208), a make-up valve (209), a mixing device (210), a second concentration sensor (211), and a piping gas exhaust valve (212).

3. 2. The multi-channel double circulation gas corrosion testing device according to claim 1, wherein a water supply pipe (13) and a water outlet pipe (14) are connected to the top and bottom of the bucket body (5), respectively, and the water supply pipe (13) and the water outlet pipe (14) are both equipped with valves. A pH sensor (15) is fixedly connected to the side of the bucket body (5), and the detection end of the pH sensor (15) is inserted into the bucket body (5).

4. 2. The multi-channel double circulation gas corrosion testing device according to claim 1, wherein the bucket body (5) and the gas discharge pipe (8) are connected to each other via a gas discharge casing (16), absorbent cotton (17) is provided within the gas discharge casing (16), a conduit (18) is connected between the gas discharge casing (16) and a side surface of the bucket body (5), and water-conducting cotton is provided within the conduit (18), one end of the water-conducting cotton extends into the bucket body (5) and the other end contacts the absorbent cotton (17).

5. 5. The multi-channel double circulation gas corrosion testing apparatus according to claim 4, characterized in that a retaining plate (20) and an elastic sheet (21) are fixedly connected to the upper and lower sides of the absorbent cotton (17), respectively, and the retaining plate (20) and the elastic sheet (21) are both fixedly connected within the gas discharge casing (16), a spring (22) is fixedly connected between the retaining plate (20) and the elastic sheet (21) and passes through the absorbent cotton (17), each of the retaining plates (20) has a set of through holes (23) on its surface, each of the elastic sheets (21) has a set of through grooves (24) on its surface, the center of the elastic sheet (21) protrudes downward into the bucket body (5), and a roller (26) is rotatably connected to the top of the rotating shaft (9) via a holder (25).

6. 2. The multi-channel double circulation gas corrosion testing device according to claim 1, wherein a set of retaining rings (27) is provided on the inner wall surface of each bucket body (5), the inner side of each retaining ring (27) is lower than the outer side, and a notch (28) is provided on the surface of each retaining ring (27).

7. 7. The multi-channel double circulation gas corrosion testing device according to claim 6, wherein the notches (28) of the adjacent retaining rings (27) are alternately provided.

8. The multi-channel double circulation gas corrosion testing device according to claim 7, characterized in that a set of damping blocks (29) is uniformly provided under each of the retaining rings (27), and a wavy elastic thread (30) is fixedly connected between adjacent damping blocks (29).

9. 9. The multi-channel double circulation gas corrosion testing device according to claim 8, wherein a magnetic body is fixedly connected to one end of the pull rod that extends below the retaining ring, a guide block is fixedly connected to the center of the elastic thread, and the guide block and the magnetic body attract each other when they approach each other.

10. 10. The multi-channel double circulation gas corrosion testing apparatus according to claim 9, wherein a receiving chamber (33) is opened in the damping block (29), a rubber membrane (34) is fixedly connected in the receiving chamber (33), an elastic member is fixedly connected between the rubber membrane (34) and the receiving chamber (33), the end of the elastic thread (30) extends into the receiving chamber (33) and is fixedly connected to the rubber membrane (34), and a pair of guide holes (35) are provided on the surface of each damping block (29), and the guide holes (35) and the receiving chamber (33) are connected to each other.

Images