A heat preservation structure for a composite electric dust collector
Patent Information
- Application Number
- CN202521902710.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-09-11
- Estimated Expiration
- 2035-09-04
AI Technical Summary
[0004]本实用新型的目的是提供一种保温性能优异，从而防止酸性气体凝结成液滴腐蚀内部壳体的现象发生、结构稳定、防水效果好的用于复合式电收尘器的保温结构，以解决传统保温不良导致的电收尘器内部温度波动大、壳体易结露引发酸性腐蚀、内部极板与极线损坏、收尘效率下降及设备寿命缩短的技术问题
1、本实用新型通过内、中、外三层保温材料层层包裹住电收尘器，极大地增加了热阻，有效阻隔电收尘器内部高温烟气热量向外部低温环境的散失，同时也减少了外部冷空气对壳体的冷却效应，同时通过防水层可有效防止雨水、雪水等渗透到保温层内部，从而保护保温材料不被浸湿，整体上可确保电收尘器处于稳定的工作温度环境中，使其始终保持高效的除尘状态。
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Figure CN224736452U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of metallurgical process technology, specifically to a heat preservation structure for a composite electrostatic precipitator. Background Technology
[0002] In the flue gas purification system of the copper smelting industry, the electrostatic precipitator (ESP) is the core purification equipment, and its performance directly affects the flue gas treatment effect and environmental compliance level. The working principle of an ESP is to use high-voltage direct current to create a strong electric field between the anode and cathode, causing the dust particles in the dust-laden flue gas flowing through the electric field to become charged. The charged dust particles are then adsorbed onto the collecting plates under the action of the electric field force and fall into the ash hopper through a rapping device, thereby achieving flue gas purification. It has advantages such as large flue gas handling capacity, high efficiency, and low resistance, and is widely used in high-temperature flue gas treatment in industries such as metallurgy, power, and cement.
[0003] The stable and efficient operation of an electrostatic precipitator depends on the precise control of its internal operating temperature. Therefore, the insulation structure of the electrostatic precipitator has a significant impact on its operation. Poor insulation of the casing can easily lead to a rapid drop in internal temperature, causing the flue gas temperature in the electric field to fall below the acid dew point. This causes acidic gases such as sulfur dioxide and sulfur trioxide in the flue gas to condense into droplets, which combine with dust to form corrosive sludge. This sludge corrodes the internal plates, wires, and steel structure of the casing, increasing maintenance frequency and shortening the equipment's lifespan. Furthermore, excessive temperature differences between the inlet and outlet can disrupt the airflow distribution within the electric field, reducing the dust's ingress velocity and consequently affecting the electrostatic precipitator's dust collection efficiency. Utility Model Content
[0004] The purpose of this invention is to provide a thermal insulation structure for composite electrostatic precipitators that has excellent thermal insulation performance, prevents acidic gases from condensing into droplets and corroding the internal shell, has a stable structure, and good waterproof effect. This solves the technical problems of large internal temperature fluctuations, easy condensation of the shell leading to acid corrosion, damage to internal plates and wires, reduced dust collection efficiency, and shortened equipment life caused by poor thermal insulation in traditional electrostatic precipitators.
[0005] To solve the above technical problems, the solution adopted by this utility model is as follows: An insulation structure for a composite electrostatic precipitator is disclosed, comprising an insulation layer, a waterproof layer, and a fixing component. The insulation layer consists of 2-3 layers: an inner insulation layer, a middle insulation layer, and an outer insulation layer. The insulation layer, from the inside out, consists of an inner insulation layer, a middle insulation layer, and an outer insulation layer, wrapping around the exterior of the electrostatic precipitator. The fixing component is located between the middle and outer insulation layers and passes through the middle and inner insulation layers, connecting to the exterior of the electrostatic precipitator. The outer side of the outer insulation layer is connected to the waterproof layer. The electrostatic precipitator, the inner insulation layer, and the middle insulation layer are connected by a high-temperature adhesive. The waterproof layer comprises fiberglass cloth and corrugated aluminum sheet, which wrap around the outer insulation layer from the inside out. The number of inner insulation layers can be set as needed.
[0006] During operation, first clean and remove rust from the outer steel shell of the electrostatic precipitator. Then, adhere the inner insulation layer to the steel shell using a high-temperature adhesive. Next, lay the remaining inner insulation layer in a staggered pattern, adhering it to the previous layer with the same high-temperature adhesive. After all the inner insulation layers are laid and adhered in a staggered pattern, then apply the middle insulation layer. This staggered laying method reduces thermal bridging, resulting in more uniform and efficient insulation. The middle insulation layer is secured using fixing components. These components firmly fix the inner and middle insulation layers to the electrostatic precipitator shell, preventing detachment. To ensure long-term stability, the outer insulation layer is located on the outside of the fixed components. This allows for a smooth overall structure while completing the insulation layer encapsulation for insulation, facilitating the adhesion of fiberglass cloth to the outer insulation layer. The corrugated aluminum plate installed outside the fiberglass cloth prevents damage from external influences. This ensures that the internal temperature of the electrostatic precipitator is above the flue gas dew point temperature, preventing the condensation of moisture and acidic gases in the flue gas, which could corrode and damage the internal components of the electrostatic precipitator, thereby extending the service life of the equipment and ensuring the continuous, efficient, and stable operation of the electrostatic precipitator.
[0007] Furthermore, the fixing component includes insulating nails and a limiting fixing net; several insulating nails are provided, evenly distributed on the outside of the electrostatic precipitator, and penetrate through the inner and middle insulation layers to connect with the limiting fixing net; the limiting fixing net is located between the middle and outer insulation layers; the outer insulation layer is fixedly connected to the limiting fixing net. The insulating nails are installed on the clean and dry electrostatic precipitator shell at equal intervals of 4-6 per square meter. When installing the inner and middle insulation layers, ensure that the insulating nails penetrate through both layers. After pressing the limiting fixing net against the middle insulation layer, it is fixed to the end point of the insulating nail. The limiting fixing net is then fixed by bending the insulating nail or by tightening it, pressing it firmly against the surface of the middle insulation layer. The outer insulation layer is laid on the limiting fixing net, which is generally made of wire mesh.
[0008] Furthermore, the fiberglass cloth is uniformly coated with a waterproofing agent and a colored polymer waterproof coating. The waterproofing agent is evenly applied to both the inner and outer sides of the fiberglass cloth. The waterproofing agent on the inner side adheres to the outer insulation layer. After the waterproofing agent on the outer side dries, multiple layers of colored polymer waterproof coating are applied. The fiberglass cloth acts as a carrier for the waterproof coating, providing strength and integrity, effectively preventing cracking of the coating layer. The colored polymer waterproof coating provides secondary waterproofing while also making the appearance cleaner, and the color change allows for visual inspection of any coating damage.
[0009] Furthermore, the inner insulation layer uses aluminum silicate needle-punched felt as the insulation material; the middle insulation layer uses composite silicate board as the insulation material; and the outer insulation layer uses sepiolite gypsum as the insulation material. The inner insulation layer, made of aluminum silicate needle-punched felt, has a low thermal conductivity and high temperature resistance, ensuring the thermal stability of the entire insulation layer. When the aluminum silicate needle-punched felt is laid in a staggered pattern and the composite silicate board is laid, sepiolite gypsum is used as a smoothing material to smooth the joints, reducing thermal bridging and ensuring the insulation effect of the inner and middle insulation layers. The sepiolite gypsum used as the outer insulation layer is directly applied to the fixed components, forming multiple layers of insulation with the inner and middle insulation layers. It also fills all gaps to prevent internal air convection and heat loss, enhancing the insulation effect and providing an ideal flat base layer for subsequent fiberglass cloth laying.
[0010] The working principle of this utility model is as follows: After cleaning and removing rust from the outer steel shell of the electrostatic precipitator, weld 4-6 insulation anchors at equal intervals per square meter and install them on the outer shell. The first layer of inner insulation, made of aluminum silicate needle-punched felt, passes through the anchors and is then bonded to the steel shell using high-temperature adhesive. The remaining inner insulation layers are then bonded using high-temperature adhesive, with each subsequent layer laid in a staggered pattern. After all inner insulation layers are installed, the middle insulation layer, made of composite silicate board, is laid, ensuring that the anchors pass through all inner and middle insulation layers. The joints between the inner insulation layer (aluminum silicate needle-punched felt) and the middle insulation layer (composite silicate board) are smoothed with sepiolite gypsum coating. A retaining mesh is used to hold the middle insulation layer in place, and then anchors are applied through the inner and middle insulation layers. The insulation layers are secured with anchoring nails to the limiting and fixing mesh, thereby fixing the inner and middle insulation layers. The outer insulation layer, made of sepiolite, is coated on the limiting and fixing mesh, forming multiple layers of insulation with the inner and middle insulation layers. This fills all gaps, prevents internal air convection and heat loss, enhances the insulation effect, and provides an ideal flat base for subsequent fiberglass cloth laying. A waterproofing agent is evenly applied to the fiberglass cloth, which is then adhered to the outer insulation layer made of sepiolite through the waterproofing agent. After the waterproofing agent dries, multiple layers of colored polymer waterproof coating are applied, providing secondary waterproofing, making the appearance cleaner, and allowing for visual inspection of coating damage through color changes. Corrugated aluminum plates are installed on the outside of the fiberglass cloth to prevent damage caused by external environmental factors.
[0011] The beneficial effects of this utility model are as follows: 1. This utility model uses three layers of insulation material—inner, middle, and outer—to wrap the electrostatic precipitator, which greatly increases the thermal resistance and effectively prevents the loss of heat from the high-temperature flue gas inside the electrostatic precipitator to the low-temperature external environment. It also reduces the cooling effect of external cold air on the shell. At the same time, the waterproof layer can effectively prevent rainwater and snow water from penetrating into the insulation layer, thus protecting the insulation material from getting wet. Overall, it can ensure that the electrostatic precipitator is in a stable working temperature environment, so that it can always maintain a highly efficient dust removal state.
[0012] 2. This utility model uses a mechanical anchoring structure of thermal insulation nails and wire limiting and fixing mesh to tightly press the inner layer of aluminum silicate needle-punched felt and the middle layer of composite silicate board onto the equipment shell, effectively preventing the insulation layer from loosening and falling off, greatly enhancing the stability and seismic resistance of the overall structure, and the insulation efficiency can be significantly improved by filling and covering with sepiolite. Attached Figure Description
[0013] Figure 1 This is a partial cross-sectional structural diagram of the present invention.
[0014] In the diagram: 1. Electrostatic precipitator; 2. Insulation layer; 21. Inner insulation layer; 22. Middle insulation layer; 23. Outer insulation layer; 3. Waterproof layer; 31. Fiberglass cloth; 32. Corrugated aluminum plate; 4. Fixing components; 41. Insulation clips; 42. Limiting and fixing net; 5. High-temperature adhesive. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] 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; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0017] The following is a detailed description of the insulation structure for a composite electrostatic precipitator according to the present invention, with reference to the accompanying drawings: Example
[0018] A thermal insulation structure for a composite electrostatic precipitator, used to insulate the electrostatic precipitator 1, includes an insulation layer 2, a waterproof layer 3, and a fixing component 4; the insulation layer 2 consists of three layers: an inner insulation layer 21, a middle insulation layer 22, and an outer insulation layer 23; the electrostatic precipitator 1, the inner insulation layer 21, and the middle insulation layer 22 are connected by a high-temperature adhesive 5; the fixing component 4 includes insulation clamps 41 and a limiting fixing net 42; the waterproof layer 3 includes fiberglass cloth 31 and a corrugated aluminum plate. 32; the inner insulation layer 21 uses aluminum silicate needle-punched felt as the insulation material; the middle insulation layer 22 uses composite silicate board as the insulation material; the outer insulation layer 23 uses sepiolite gypsum as the insulation material; the insulation layer 2 is wrapped around the outside of the electrostatic precipitator 1 in the following order from the inside to the outside: inner insulation layer 21, middle insulation layer 22, and outer insulation layer 23; the fiberglass cloth 31 is uniformly coated with a waterproofing agent and a colored polymer waterproof coating; The limiting and fixing net 42 is located between the middle insulation layer 22 and the outer insulation layer 23; the insulation nails 41 are provided with several roots, evenly distributed on the outside of the electrostatic precipitator 1, and penetrate through the inner insulation layer 21 and the middle insulation layer 22 to connect with the limiting and fixing net 42; the outer insulation layer 23 is fixedly connected to the limiting and fixing net 42, and its outer side is connected to the fiberglass cloth 31 of the waterproof layer 3; the corrugated aluminum plate 32 is added to the outside of the fiberglass cloth 31.
[0019] The working principle of this embodiment is as follows: After cleaning and removing rust from the exterior steel shell of the electrostatic precipitator 1, six insulation anchors 41 are welded at equal intervals per square meter and installed on the outer shell of the electrostatic precipitator 1. The first layer of the inner insulation layer 21, made of aluminum silicate needle-punched felt, passes through the insulation anchors 41 and is then bonded to the outer steel shell of the electrostatic precipitator 1 using high-temperature adhesive 5. The remaining two layers are bonded to the outer steel shell of the electrostatic precipitator 1 by staggering the inner insulation layer 21 with the previous inner insulation layer 221. After all the inner insulation layers 21 are installed and bonded, the middle insulation layer 22, made of composite silicate board, is laid and bonded, ensuring that the insulation anchors 41 pass through all the inner insulation layers 21 and the middle insulation layer 22. The joints between the inner insulation layer 21 made of aluminum silicate needle-punched felt and the middle insulation layer 22 made of composite silicate board are smoothed with sepiolite gypsum coating. The limiting and fixing net 42 presses down on the middle insulation layer 22, and then the anchors 41 are bonded to the inner insulation layer 22. The inner insulation layer 21 and the middle insulation layer 22 are fixed by the insulation nails 41. The inner insulation layer 21 and the middle insulation layer 22 are fixed by the insulation nails 41. The outer insulation layer 23, made of sepiolite, is coated on the insulation nails 42. While forming multiple insulation layers with the inner insulation layer 21 and the middle insulation layer 22, it can fill all gaps, prevent internal air convection and heat loss, and enhance the insulation effect. Waterproofing agent is evenly applied to the fiberglass cloth 31. The fiberglass cloth 31 is adhered to the outer insulation layer 23 made of sepiolite through the waterproofing agent. After the waterproofing agent dries, multiple layers of colored polymer waterproof coating are applied. While performing secondary waterproofing, it can also make the appearance cleaner and can be visually checked for coating damage by color change. Corrugated aluminum plate 32 is installed on the outside of fiberglass cloth 31 to prevent the fiberglass cloth 31 from being damaged by the external environment.
[0020] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A thermal insulation structure for a composite electrostatic precipitator, used for thermal insulation of the electrostatic precipitator (1), characterized in that: It includes an insulation layer (2), a waterproof layer (3), and a fixing component (4); the insulation layer (2) is composed of an inner insulation layer (21), a middle insulation layer (22), and an outer insulation layer (23) with 2 to 4 layers; The insulation layer (2) consists of an inner insulation layer (21), a middle insulation layer (22), and an outer insulation layer (23) from the inside out, which wrap around the outside of the electrostatic precipitator (1); the fixing component (4) is located between the middle insulation layer (22) and the outer insulation layer (23), and passes through the middle insulation layer (22) and the inner insulation layer (21) to connect with the outside of the electrostatic precipitator (1); the outer side of the outer insulation layer (23) is connected to the waterproof layer (3); the electrostatic precipitator (1), the inner insulation layer (21), and the middle insulation layer (22) are connected by a high-temperature adhesive (5); The waterproof layer (3) includes fiberglass cloth (31) and corrugated aluminum plate (32); the fiberglass cloth (31) and corrugated aluminum plate (32) wrap around the outer insulation layer (23) from the inside out.
2. The insulation structure for a composite electrostatic precipitator according to claim 1, characterized in that: The fixing component (4) includes thermal insulation nails (41) and a limiting fixing net (42); the thermal insulation nails (41) are provided with several roots, which are evenly distributed on the outside of the electrostatic precipitator (1) and penetrate through the inner insulation layer (21) and the middle insulation layer (22) to connect with the limiting fixing net (42); the limiting fixing net (42) is located between the middle insulation layer (22) and the outer insulation layer (23); the outer insulation layer (23) is fixedly connected to the limiting fixing net (42).
3. The heat retaining structure for a composite electric dust collector according to claim 1, wherein: The fiberglass cloth (31) is coated with a waterproofing agent and a colored polymer waterproof coating.
4. The heat retaining structure for a composite electric dust collector according to claim 1, wherein: The inner insulation layer (21) uses aluminum silicate needle-punched felt as the insulation material; the middle insulation layer (22) uses composite silicate board as the insulation material; and the outer insulation layer (23) uses sepiolite gypsum as the insulation material.