Electrochemical anode conductive explosion-proof device

Abstract

The utility model relates to electrochemistry anodic oxidation preparation technical field, concretely relates to a kind of electrochemistry anode electric conduction explosion-proof device, composite electrically conductive shaft is from top to bottom through the sealed shell, and elastic electrically conductive contact device includes device shell, terminal, spring and electrically conductive contact;Device shell is fixedly connected in the shell interior, and the first cavity and the second cavity that are respectively adapted with electrically conductive contact and spring are provided in device shell interior, electrically conductive contact and the first cavity slidingly connect, one end of electrically conductive contact is in contact with composite electrically conductive shaft, the other end of electrically conductive contact is connected with spring and terminal, and terminal extends to the outside of sealed shell;Positive pressure explosion-proof gas circulation component includes the air inlet, gas outlet and explosion-proof gas source connected with air inlet set on sealed shell;The device can automatically compensate the contact displacement caused by stirring paddle rotation and vibration through elastic electrically conductive contact device structure, to ensure that electrically conductive contact has good contact pressure at close moment, and high stability.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical anodic oxidation preparation technology, specifically to an electrochemical anodic conductive explosion-proof device. Background Technology

[0002] In the actual production process of electrolysis, the anode agitator plays a crucial role. It must ensure the efficient and stable transmission of current from the external power source to the anode within the electrolytic cell, providing continuous power support for the electrolytic reaction. Simultaneously, it must continuously stir the electrolyte to promote uniform ion distribution, significantly improving the rate and efficiency of the electrolytic reaction. However, existing anode agitator conductive devices on the market have revealed numerous serious problems during long-term operation. The conductivity stability requirements of the anode agitator are extremely high. Some existing devices use a metal brush contacting the agitator, but in the highly corrosive environment of the electrolyte, a corrosion layer easily forms on the surface of the metal brush. Furthermore, the metal brush is prone to wear during long-term high-speed friction, requiring frequent replacement. This not only affects production progress but also increases production costs for enterprises. At the same time, existing devices, in order to ensure conductivity stability and sealing, employ multi-layered sealing and multi-component conductive systems. The excessive number of parts leads to increased manufacturing costs, complex assembly, and difficult maintenance. Improper installation can also result in decreased sealing or conductivity performance. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defects in the prior art, thereby providing an electrochemical anodic conductive explosion-proof device.

[0004] An electrochemical anodic conductive explosion-proof device includes: a sealed housing, an elastic conductive contact device, a positive pressure explosion-proof gas circulation assembly, and a composite conductive shaft;

[0005] The composite conductive shaft runs through the sealed housing from top to bottom. The upper end of the composite conductive shaft is fixedly connected to the power source, and the lower end of the composite conductive shaft is connected to the stirring paddle.

[0006] The elastic conductive contact device includes a device housing, a terminal block, a spring, and a conductive contact. The device housing is fixed inside the housing. The device housing has a first cavity and a second cavity that are respectively adapted to the conductive contact and the spring. The conductive contact is slidably connected to the first cavity. One end of the conductive contact is in contact with the composite conductive shaft, and the other end of the conductive contact is connected to the spring and the terminal block. The terminal block extends to the outside of the sealed housing.

[0007] The positive pressure explosion-proof gas circulation assembly includes an air inlet, an air outlet, and an explosion-proof gas source connected to the air inlet, all disposed on a sealed housing.

[0008] Furthermore, the sealed housing includes an explosion-proof housing cover and an explosion-proof housing. The top of the explosion-proof housing is fixedly connected to the explosion-proof housing cover. The composite conductive shaft passes through the explosion-proof housing cover and the explosion-proof housing from top to bottom. The device housing is fixedly connected inside the explosion-proof housing. The air inlet and air outlet are both located on the explosion-proof housing.

[0009] Furthermore, both the explosion-proof cover and the explosion-proof housing have a multi-layer structure, consisting of an explosion-proof layer, a fire-resistant and heat-insulating layer, and a corrosion-resistant layer connected sequentially from the inside out.

[0010] Furthermore, the top of the explosion-proof housing cover and the bottom of the explosion-proof housing are respectively provided with a first groove and a second groove. The sealing gasket of the explosion-proof housing cover is connected with the first groove and the second groove. The positions where the explosion-proof housing cover and the explosion-proof housing are penetrated by the composite conductive shaft are respectively provided with a third groove and a fourth groove. The third groove and the fourth groove are respectively provided with a sealing ring and a sealing sheet.

[0011] Furthermore, the composite conductive shaft includes a metal core and a graphite layer wrapped around the metal core.

[0012] Furthermore, the sealed housing is equipped with multiple pressure relief valves.

[0013] Furthermore, the device also includes multiple sensors and a data processing unit, with the multiple sensors all communicatively connected to the data processing unit.

[0014] Furthermore, multiple sensors include temperature sensors, pressure sensors, gas concentration sensors, and current sensors;

[0015] A temperature sensor is installed on both the agitator and the flexible conductive contact device;

[0016] The sealed housing contains a pressure sensor and a gas concentration sensor.

[0017] The flexible conductive contact device is also equipped with a current sensor.

[0018] Furthermore, the device also includes an alarm system, which is connected to the data processing unit.

[0019] The technical solution of this utility model has the following advantages:

[0020] 1. The elastic conductive contact device designed in this utility model uses the pressure applied by the spring to make the conductive contact tightly adhere to the surface of the composite conductive shaft, forming a reliable conductive connection. This elastic structure can automatically compensate for the contact displacement caused by the rotation and vibration of the stirring paddle, thereby ensuring that the conductive contact has good contact pressure at all times and ensuring the stability of conductivity.

[0021] 2. The technical solution of this utility model continuously injects inert gas into the sealed shell through a positive pressure explosion-proof gas circulation component, so that the pressure inside the sealed shell cavity is always 0.05-0.1 MPa higher than the pressure inside the electrolytic cell. When a small amount of flammable and explosive gas enters the sealed shell cavity, it will be immediately diluted by the positive pressure inert gas and discharged from the outlet, so that the flammable and explosive gas inside the sealed shell cavity cannot accumulate to an explosive concentration, and the explosion-proof effect is good.

[0022] 3. The technical solution of this utility model has a simple structure, few parts, low manufacturing cost, can be quickly assembled and is easy to maintain. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific 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 from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of an electrochemical anode conductive explosion-proof device.

[0025] Figure 2 for Figure 1 Top view.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1-Explosion-proof housing cover; 2-Explosion-proof housing; 3-Flexible conductive contact device; 4-Terminal;

[0028] 5-Spring; 6-Conductive contact; 7-Composite conductive shaft; 8-Sealing structure sealing plate;

[0029] 9-Sealing structure sealing ring; 10-Explosion-proof housing cover sealing gasket; 11-Air inlet;

[0030] 12 - Air outlet. Detailed Implementation

[0031] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0032] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] 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.

[0034] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] Please see Figures 1-2 An electrochemical anodic conductive explosion-proof device includes: a sealed housing, an elastic conductive contact device 3, a positive pressure explosion-proof gas circulation assembly, and a composite conductive shaft 7;

[0036] The composite conductive shaft 7 extends through the sealed housing from top to bottom. The upper end of the composite conductive shaft 7 is fixedly connected to the power source, and the lower end of the composite conductive shaft 7 is connected to the stirring paddle.

[0037] The elastic conductive contact device 3 includes a housing, terminals 4, multiple springs 5, and conductive contacts 6. The housing is fixed inside the casing. Inside the housing, there are a first cavity and a second cavity that are respectively adapted to the conductive contacts 6 and the multiple springs 5. The conductive contacts 6 are slidably connected to the first cavity. One end of the conductive contacts 6 contacts the composite conductive shaft 7, and the other end of the conductive contacts 6 is connected to the multiple springs 5 ​​and the terminals 4, with the terminals 4 extending to the outside of the sealed casing. The conductive contacts 6 are made of a copper-silver alloy material with high conductivity and strong corrosion resistance. When the composite conductive shaft 7 is connected to a power source, the pressure applied by the springs 5 ​​causes the conductive contacts 6 to fit tightly against the surface of the composite conductive shaft 7, forming a reliable conductive connection. This elastic structure can automatically compensate for the contact displacement caused by the rotation and vibration of the stirring paddle, thereby ensuring good contact pressure when the conductive contacts 6 are tightly closed, ensuring the stability of conductivity. At the same time, the surface of the conductive contacts 6 is silver-plated to further reduce contact resistance and improve conductivity efficiency.

[0038] The positive pressure explosion-proof gas circulation assembly includes an air inlet 11, an air outlet 12, and an explosion-proof gas source connected to the air inlet 11, all disposed on the sealed housing. The explosion-proof gas source continuously injects inert gases such as nitrogen into the sealed housing through the air inlet 11, ensuring that the pressure inside the sealed housing cavity is always 0.05-0.1 MPa higher than the pressure inside the electrolytic cell. When a small amount of flammable and explosive gas enters the sealed housing cavity, it will be immediately diluted by the positive pressure inert gas and discharged from the air outlet 12, preventing the flammable and explosive gas inside the sealed housing cavity from accumulating to an explosive concentration.

[0039] The sealed housing includes an explosion-proof housing cover 1 and an explosion-proof housing 2. The top of the explosion-proof housing 2 is fixedly connected to the explosion-proof housing cover 1. The composite conductive shaft 7 passes through the explosion-proof housing cover 1 and the explosion-proof housing 2 from top to bottom. The device housing is fixedly connected inside the explosion-proof housing 2. The air inlet 11 and the air outlet 12 are both provided on the explosion-proof housing 2.

[0040] Both the explosion-proof housing cover 1 and the explosion-proof housing 2 have a multi-layer structure, consisting of an explosion-proof layer, a fireproof and heat-insulating layer, and a corrosion-resistant layer connected sequentially from the inside out. The explosion-proof layer is made of special steel with excellent impact resistance, such as high-manganese steel, which can withstand possible internal explosion impacts. The fireproof and heat-insulating layer is made of ceramic fiber material, which effectively prevents the heat and flame generated by the internal explosion from spreading outward. The corrosion-resistant layer is made of fiberglass, which can prevent corrosion from external electrolytes.

[0041] The top of the explosion-proof housing cover 1 and the bottom of the explosion-proof housing 2 are respectively provided with a first groove and a second groove. The explosion-proof housing cover sealing gasket 10 is connected with the first groove and the second groove. The explosion-proof housing cover 1 and the explosion-proof housing 2 are respectively provided with a third groove and a fourth groove at the position through which the composite conductive shaft 7 passes. The third groove and the fourth groove are respectively provided with a sealing structure sealing ring 9 and a sealing structure sealing sheet 8. The sealing structure sealing sheet 8, the sealing structure sealing ring 9 and the explosion-proof housing cover sealing gasket 10 are all made of materials such as polytetrafluoroethylene (PTFE) and fluororubber, which are corrosion-resistant, wear-resistant and have certain flame-retardant properties. The flammable and explosive gases leaking from between the stirring paddle and the electrolytic cell are blocked by the sealing structure sealing sheet 8, the sealing structure sealing ring 9 and the explosion-proof housing cover sealing gasket 10, preventing the flammable and explosive gases from entering the sealed housing and causing an explosion.

[0042] In this embodiment, to further ensure the stable operation of the overall device, a special design can be made at the connection between the stirring paddle and the electrolytic cell. Specifically, the connection can be designed as a layered labyrinth-type sealing structure. When flammable and explosive gases attempt to leak from the inside, they will be blocked multiple times in the labyrinth channel. Due to the continuous collision and diffusion of gas molecules inside the sealed channel, the leakage rate can be greatly reduced. Experimental data has verified that the labyrinth-type sealing structure can achieve a leakage prevention efficiency of over 99% for common flammable gases such as hydrogen. The labyrinth-type sealing structure is a common structural design in the sealing field and belongs to the prior art. The specific structure in this embodiment will not be described in detail here, as long as it can meet the actual needs.

[0043] In this embodiment, the composite conductive shaft 7 is made of graphite-metal composite material, with a high-strength metal core inside, such as a titanium alloy core. Its main function is to provide good mechanical strength and support performance, ensuring the structural stability of the stirring paddle during high-speed rotation. A high-purity graphite layer is wrapped around the metal core. The excellent conductivity and chemical stability of graphite can effectively resist the corrosion of electrolyte, greatly extending the service life of conductive components and achieving low-resistance conductivity. Experimental verification shows that compared with traditional designs, the contact resistance in this solution is reduced by more than 60%. The graphite layer is firmly bonded to the metal core through a special hot-pressing process, and the interface resistance between the two is extremely low, which can ensure that the current is conducted uniformly and efficiently throughout the shaft.

[0044] In this embodiment, in order to monitor the operating status of the device in real time and promptly detect and address potential safety hazards, the device is also equipped with an intelligent monitoring system consisting of multiple sensors and a data processing unit. All sensors are communicatively connected to the data processing unit, and are installed at key locations within the device, as detailed below:

[0045] Multiple sensors include temperature sensors, pressure sensors, gas concentration sensors, and current sensors;

[0046] A temperature sensor is installed on both the stirring paddle and the elastic conductive contact device 3;

[0047] The sealed housing contains a pressure sensor and a gas concentration sensor.

[0048] A current sensor is also installed on the flexible conductive contact device 3.

[0049] This device also includes an alarm system connected to the data processing unit. The data processing unit sends the aggregated, analyzed, and processed data to the remote monitoring center in real time, allowing staff to monitor the device's operation anytime, anywhere and make timely decisions. The data processing unit's built-in algorithm compares the acquired data with corresponding safety thresholds. When a sensor reading at a certain location is about to exceed the set threshold, the alarm system alerts staff to conduct inspections and take appropriate action. When the temperature sensor detects excessively high temperatures, cooling can be enhanced by adjusting the fan speed or coolant flow in the external heat dissipation system to prevent overheating and subsequent malfunctions. When the pressure sensor detects abnormal pressure in the internal cavity of the sealed housing, it automatically adjusts the output of inert gas from the explosion-proof gas source and adaptively adjusts the amount of inert gas filling the internal cavity of the sealed housing. The gas concentration sensor continuously monitors the concentration of flammable and explosive gases; when the concentration approaches 20% of the lower explosive limit, the alarm system issues an alarm to prompt personnel to inspect and handle the situation. The current sensor monitors the magnitude and stability of the current on the elastic conductive contact device 3 in real time; when abnormal current fluctuations are detected, the cause is analyzed and corresponding measures are taken, such as adjusting the contact pressure of the conductive contact 6 or checking the connection of the composite conductive shaft 7, to ensure stable conductivity. Simultaneously, multiple pressure relief valves are installed on the sealed housing. When the internal pressure rises sharply due to an explosion or other reasons, the pressure relief valves can be opened remotely or automatically to quickly release the pressure and reduce the harm of the explosion to equipment and personnel.

[0050] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An electrochemical anodic conductive explosion-proof device, characterized in that, include: Sealed housing, elastic conductive contact device (3), positive pressure explosion-proof gas circulation assembly and composite conductive shaft (7); The composite conductive shaft (7) runs through the sealed housing from top to bottom. The upper end of the composite conductive shaft (7) is fixed to the power source, and the lower end of the composite conductive shaft (7) is connected to the stirring paddle. The elastic conductive contact device (3) includes a device housing, a terminal block (4), a spring (5), and a conductive contact (6); the device housing is fixed inside the housing, and the device housing is provided with a first cavity and a second cavity that are adapted to the conductive contact (6) and the spring (5) respectively. The conductive contact (6) is slidably connected to the first cavity. One end of the conductive contact (6) is in contact with the composite conductive shaft (7), and the other end of the conductive contact (6) is connected to the spring (5) and the terminal block (4), and the terminal block (4) extends to the outside of the sealed housing; The positive pressure explosion-proof gas circulation assembly includes an air inlet (11), an air outlet (12) disposed on a sealed housing, and an explosion-proof gas source connected to the air inlet (11).

2. The electrochemical anodic conductive explosion-proof device according to claim 1, characterized in that, The sealed housing includes an explosion-proof housing cover (1) and an explosion-proof housing (2). The top of the explosion-proof housing (2) is fixedly connected to the explosion-proof housing cover (1). The composite conductive shaft (7) passes through the explosion-proof housing cover (1) and the explosion-proof housing (2) from top to bottom. The device housing is fixedly connected inside the explosion-proof housing (2). The air inlet (11) and the air outlet (12) are both located on the explosion-proof housing (2).

3. The electrochemical anodic conductive explosion-proof device according to claim 2, characterized in that, Both the explosion-proof housing cover (1) and the explosion-proof housing (2) are multi-layered structures, consisting of an explosion-proof layer, a fireproof and heat-insulating layer, and a corrosion-resistant layer connected sequentially from the inside out.

4. The electrochemical anodic conductive explosion-proof device according to claim 2, characterized in that, The top of the explosion-proof housing cover (1) and the bottom of the explosion-proof housing (2) are respectively provided with a first groove and a second groove. The explosion-proof housing cover sealing gasket (10) is connected with the first groove and the second groove. The explosion-proof housing cover (1) and the explosion-proof housing (2) are respectively provided with a third groove and a fourth groove at the position through which the composite conductive shaft (7) passes. The third groove and the fourth groove are respectively provided with a sealing structure sealing ring (9) and a sealing structure sealing sheet (8).

5. The electrochemical anodic conductive explosion-proof device according to claim 1, characterized in that, The composite conductive shaft (7) includes a metal core and a graphite layer wrapped around the metal core.

6. The electrochemical anodic conductive explosion-proof device according to claim 1, characterized in that, The sealed housing is equipped with multiple pressure relief valves.

7. The electrochemical anodic conductive explosion-proof device according to claim 1, characterized in that, The device also includes multiple sensors and a data processing unit, with the multiple sensors communicating with the data processing unit.

8. The electrochemical anodic conductive explosion-proof device according to claim 7, characterized in that, Multiple sensors include temperature sensors, pressure sensors, gas concentration sensors, and current sensors; A temperature sensor is installed on both the stirring paddle and the elastic conductive contact device (3); The sealed housing contains a pressure sensor and a gas concentration sensor. A current sensor is also provided on the elastic conductive contact device (3).

9. The electrochemical anodic conductive explosion-proof device according to claim 8, characterized in that, The device also includes an alarm system, which is connected to the data processing unit.

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