Electric demisting insulation box with gas protection

Abstract

An electric demisting insulation box with a gas protection function relates to the technical field of insulation boxes and comprises an insulation box and a gas pipeline, an electric demisting upper steam chamber is arranged on one side of the insulation box, a quartz tube used for isolating current is arranged between the electric demisting upper steam chamber and the insulation box, the gas pipeline is arranged on one side of the outer wall of the insulation box, and the gas pipeline is arranged on the outer wall of the insulation box. The gas conveying pipeline is arranged on one side of the insulation box and communicated with the interior of the insulation box, inert gas is contained in the gas conveying pipeline, the gas pressure of the inert gas is larger than that of the interior of the electric demisting steam feeding chamber, and pressure difference is formed in the insulation box by arranging the gas conveying pipeline on one side of the insulation box and conveying the inert gas. According to the utility model, corrosive gas in the electric demisting steam feeding chamber is effectively prevented from entering the insulation box, so that a reliable gas protection barrier can be constructed for electrical equipment in the box, the damage risk of the external corrosive gas to the electrical equipment is greatly reduced, and the problems of equipment failure and performance reduction caused by gas corrosion are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of insulation boxes, and more specifically to an electric demisting insulation box with gas protection. Background Art

[0002] As an efficient gas purification method, electrostatic demisting technology is widely used in industrial production to remove droplets and particles from gases. Traditional electrostatic demisting systems usually include electrostatic demisters, insulation boxes, and corresponding control systems. Electrostatic demisters generate electric fields by applying high voltage, so that charged droplets and particles move to the dust collecting electrode under the action of the electric field force and are collected. The insulation box is used to isolate the electrostatic demisting device from the external environment and protect sensitive components such as internal electric heaters and instrumentation equipment from the influence of external corrosive gases.

[0003] Although the electrostatic demister technology performs well in industrial applications, its existing insulation box design has some defects. At present, the insulation box is mainly isolated from the electrostatic demister steam chamber by quartz tubes and cover plates. However, during the crimping process of the cover plate, leakage is prone to occur due to poor sealing. This causes the corrosive gas in the electrostatic demister steam chamber to penetrate into the insulation box, causing damage to the box wall, electric heater, instrumentation equipment, etc. Long-term exposure to this environment will not only shorten the service life of the equipment, but also increase maintenance costs.

[0004] What’s more serious is that the intrusion of corrosive gases can also cause discharge in the electrostatic demister, leading to unstable equipment operation, affecting the continuity and stability of the process, and thus reducing the demisting effect. These problems not only increase the operating costs of the enterprise, but also pose potential risks to the environment and personnel safety.

[0005] Therefore, in view of the above-mentioned technical defects, it is necessary to propose an electric demisting insulation box with gas protection. Utility Model Content

[0006] The utility model aims to address the above-mentioned defects and proposes an electric defogging insulation box with gas protection. When in use, the insulation box can effectively prevent the penetration of corrosive gases and protect internal equipment from damage, thereby improving the stability and service life of the electric defogging system.

[0007] The utility model provides an electric demisting insulation box with gas protection, comprising:

[0008] An insulating box, one side of which is provided with an electric defogging steam chamber, a quartz tube for isolating current is provided between the electric defogging steam chamber and the insulating box, and a cover plate for preventing gas leakage is provided at the quartz tube;

[0009] A gas transmission pipeline is arranged on one side of the outer wall of an insulating box, and the gas transmission pipeline is communicated with the inside of the insulating box. The gas transmission pipeline contains inert gas, and the gas pressure of the inert gas is greater than the gas pressure in the upper steam chamber of the electric demister.

[0010] A monitoring unit is arranged on the insulating box. The monitoring unit includes a pressure transmitter and a controller. During use, the pressure transmitter and the controller can monitor and adjust the gas pressure difference inside the insulating box.

[0011] Preferably: A check valve, a globe valve, and a regulating valve are sequentially arranged on the gas transmission pipeline from the inner side to the outer end. The check valve is used to prevent the reverse flow of inert gas, the globe valve is used to completely cut off or connect the gas transmission pipeline, and the regulating valve is used to precisely adjust the gas flow rate and pressure.

[0012] Preferably: A flow meter for measuring the flow rate of inert gas is arranged at the air inlet end of the gas transmission pipeline.

[0013] Preferably: A gas compressor for supplying gas is also arranged at one end of the gas transmission pipeline.

[0014] Preferably: The inert gas can be any one of nitrogen, argon, or helium.

[0015] Preferably: The controller is electrically connected to the pressure transmitter and the regulating valve respectively.

[0016] Preferably: The controller is also communicatively linked to the DCS system of an external unit.

[0017] The beneficial effects of the present utility model are as follows:

[0018] 1. Compared with the prior art, in this solution, a gas transmission pipeline is arranged on one side of the insulating box to transport inert gas, forming a pressure difference inside the insulating box, effectively preventing the corrosive gas in the upper steam chamber of the electric demister from entering the insulating box. In this way, a reliable gas protection barrier can be constructed for the electrical equipment inside the box, greatly reducing the damage risk of external corrosive gas to the electrical equipment, and thus avoiding the problems of equipment failure and performance degradation caused by gas corrosion.

[0019] 2. By setting up a controller and a pressure transmitter, the utility model can monitor the gas pressure in the insulating box in real time and accurately. During use, the controller can automatically adjust the opening degree of the regulating valve according to the signal transmitted by the pressure transmitter to ensure that the gas pressure in the insulating box always remains within the set range. This greatly improves the reliability and stability of the equipment operation. For example, when the pressure in the insulating box changes due to certain reasons, the system can quickly respond and timely adjust the input or output of the gas, avoiding the adverse effects on the equipment caused by excessive pressure fluctuations. At the same time, it also reduces the need for manual intervention, improving production efficiency and management convenience. Brief Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of an electric demisting insulating box with gas protection of the utility model.

[0021] Figure 1 In the figure: 1 - insulating box; 2 - upper steam chamber of electric demisting; 3 - flue gas outlet; 4 - quartz tube; 5 - gas transmission pipeline; 6 - check valve; 7 - stop valve; 8 - regulating valve; 9 - flowmeter; 10 - pressure transmitter; 11 - controller. Detailed Embodiment

[0022] Next, the technical solutions of the utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the utility model.

[0023] As shown in the attached Figure 1 figure: An electric demisting insulating box with gas protection includes an insulating box 1 and an upper steam chamber 2 of electric demisting arranged on one side of the insulating box 1. A quartz tube 4 for isolating current is arranged between the inside of the insulating box 1 and the upper steam chamber 2 of electric demisting, and a cover plate for preventing gas leakage is arranged at the quartz tube 4. At the same time, at least one gas transmission pipeline 5 is communicated from the outer end face to the inside of the insulating box 1, and the gas transmission pipeline 5 is filled with inert gas with positive pressure. In this way, during use, it is allowed to inject inert gas with positive pressure into the insulating box 1 through external equipment, and then make the gas pressure in the insulating box 1 higher than the gas pressure in the upper steam chamber 2 of electric demisting. In this way, it can be ensured that even if there is a leak point in the quartz tube 4 or gas leakage occurs, the corrosive gas in the upper steam chamber 2 of electric demisting will not enter the insulating box 1, and thus the electrical equipment in the insulating box 1 can be protected.

[0024] Furthermore, for the convenience of transporting inert gas, a gas compressor for supplying gas is provided at one end of the gas pipeline 5. During use, the gas compressor is allowed to supply gas into the insulation box 1 through the gas pipeline 5.

[0025] Furthermore, a flue gas outlet 3 for exhausting gas is also provided at the upper electric demister chamber 2. When the gas is treated by the electric demister in the upper electric demister chamber 2, it can be discharged through the flue gas outlet 3. In addition, it should be noted that the electric demister, as a standard configuration in the upper electric demister chamber 2, is a conventional well-known device in this field.

[0026] In this embodiment, a check valve 6, a globe valve 7, and a regulating valve 8 are sequentially arranged on the gas pipeline 5 from the inner side to the outer end. The check valve 6 is used to prevent the reverse flow of inert gas. For example, when the gas passes through in the forward direction, the valve opens. Once the gas shows a tendency of reverse flow, the valve will quickly close to prevent the reverse flow of gas. At the same time, the globe valve 7 is used to completely cut off or connect the gas pipeline 5. For example, when it is necessary to completely stop the gas transportation, closing the globe valve 7 can reliably cut off the gas passage and prevent the gas from passing through. When it is necessary to resume the gas supply, just open the globe valve 7.

[0027] Finally, the regulating valve 8 is used to precisely adjust the gas flow rate and pressure. For example, during the process of the gas pipeline 5 transporting gas to the insulation box 1, the regulating valve 8 can adjust the gas supply amount in real time according to factors such as the pressure change in the insulation box 1 and the process requirements, ensuring that the gas pressure in the insulation box 1 always remains within the set range. When the pressure in the insulation box 1 is lower than the set value, the regulating valve 8 will automatically increase the opening degree to increase the gas flow rate to increase the pressure. When the pressure is higher than the set value, the regulating valve 8 will decrease the opening degree to reduce the gas flow rate to maintain the pressure stability.

[0028] Furthermore, a flowmeter 9 for measuring the flow rate of inert gas is also provided at the inlet end of the gas pipeline 5. During use, the flowmeter 9 can judge whether there is a leakage point in the insulation box 1 and the flow rate of the supplementary nitrogen, which not only ensures the dryness in the insulation box 1, but also protects the equipment and instruments from being damaged, and at the same time, the operation of the electric demister equipment is more stable.

[0029] Based on the above embodiments, at least one set of monitoring units is further provided on the insulation box 1. The monitoring unit includes a pressure transmitter 10 and a controller 11. The pressure transmitter 10 can be arranged inside or outside the insulation box 1, and then the controller 11 is electrically connected to the pressure transmitter 10 and the regulating valve 8 respectively. During use, the pressure transmitter 10 can sense the gas pressure inside the insulation box 1 and convert it into an electrical signal to be transmitted to the controller 11. After receiving the signal, the controller 11 determines whether the pressure is lower than the set value. If it is lower than the set value, an opening signal is sent to the regulating valve 8 to allow more gas to enter the insulation box 1; if the pressure is higher than the set value, a closing signal is sent to reduce or prevent gas from entering. In this way, the automatic regulation and monitoring of the gas pressure inside the insulation box 1 are achieved.

[0030] Further, the controller 11 can also be connected to the DCS system of the external unit. During use, the controller 11 can transmit the processed pressure data to the DCS system via the communication link. The DCS system will analyze and compare the received pressure data based on the preset pressure set value, and then send the control instruction of the regulating valve to the controller 11. Finally, after receiving the instruction, the controller 11 will output the corresponding control signal to the regulating valve to adjust the internal pressure of the insulation box.

[0031] In addition, it should be pointed out that the DCS system mentioned here, that is, the distributed control system, is a mature technology widely used in the field of industrial automation. It consists of multiple control nodes and realizes data exchange and transmission of control instructions through a high-speed communication network. The DCS system has functions such as real-time monitoring, data processing, and automatic control, and can accurately control the industrial process according to the preset control logic.

[0032] Based on the above embodiments, the inert gas transported in the conveying pipeline can be any one of nitrogen, argon, or helium. During use, the characteristics of nitrogen, argon, or helium can be utilized to effectively protect the electrical equipment inside the insulation box 1. For example: Nitrogen is a colorless and odorless inert gas with stable chemical properties. In the insulation box 1, it will not react chemically with materials such as metals and plastics in the electrical equipment, nor will it corrode or oxidize these components. Due to its non-conductive property, it can prevent problems such as electrical short circuits and leakage, providing a stable operating environment for the electrical equipment; Argon is also an inert gas with high insulation. Inside the insulation box 1, it can form an insulating layer around the electrical equipment to improve the insulation performance of the equipment; Helium is an extremely inactive inert gas that will not react chemically with the materials in the electrical equipment.

[0033] In addition, when nitrogen, argon or helium enters the insulating box 1, a pressure difference will be formed inside the insulating box 1, making the gas pressure inside the insulating box 1 greater than the gas pressure inside the upper gas chamber 2 of the electrostatic demister. In this way, these inert gases can suppress the corrosive gases inside the upper gas chamber 2 of the electrostatic demister, thereby ensuring the continuous operation of the equipment inside the insulating box 1.

[0034] Finally, it should be noted that the above embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting it. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. An electric demisting insulation box with gas protection, characterized in that: include: An insulating box (1), wherein an electric demisting steam chamber (2) is provided on one side of the insulating box (1), a quartz tube (4) for isolating electric current is provided between the electric demisting steam chamber (2) and the insulating box (1), and a cover plate for preventing gas leakage is provided at the quartz tube (4); A gas pipeline (5), the gas pipeline (5) being arranged on one side of the outer wall of the insulation box (1), and the gas pipeline (5) being connected to the inside of the insulation box (1), the gas pipeline (5) containing inert gas, wherein the gas pressure of the inert gas is greater than the gas pressure in the electric demisting steam chamber (2); A monitoring unit is provided on the insulating box (1), and comprises a pressure transmitter (10) and a controller (11). When in use, the pressure transmitter (10) and the controller (11) can monitor and adjust the gas pressure difference in the insulating box (1).

2. The gas-protected electric demisting insulation box according to claim 1 is characterized in that: The gas pipeline (5) is provided with a check valve (6), a stop valve (7) and a regulating valve (8) in order from the inside to the outside. The check valve (6) is used to prevent the inert gas from flowing back, the stop valve (7) is used to completely cut off or connect the gas pipeline (5), and the regulating valve (8) is used to accurately adjust the gas flow and pressure.

3. The gas-protected electric demisting insulation box according to claim 1, characterized in that: A flow meter (9) for measuring the flow rate of the inert gas is arranged on the gas inlet end of the gas delivery pipeline (5).

4. The gas-protected electric demisting insulation box according to claim 1, characterized in that: A gas compressor for supplying gas is also provided at one end of the gas pipeline (5).

5. The gas-protected electric demisting insulation box according to claim 1, characterized in that: The inert gas can be any one of nitrogen, argon or helium.

6. An electric demisting insulation box with gas protection according to any one of claims 1 or 2, characterized in that: The controller (11) is electrically connected to the pressure transmitter (10) and the regulating valve (8) respectively.

7. The gas-protected electric demisting insulation box according to claim 1, characterized in that: The controller (11) is also linked to the DCS system of the external unit for communication.

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