Method for in-situ replacement of a dust collector

Abstract

This invention provides a method for on-site replacement and modification of a dust collector. The method includes: installing a spare dust collector frame and a spare sliding mechanism, and assembling the new dust collector body at a different location; shutting down the original dust collector and dismantling the original dust collector and its support frame; installing the new dust collector bracket, dust collector frame beams, and dust collector hopper; moving the new dust collector body piece by piece; reinforcing and sealing the connection between the dust collector hopper and the dust collector side plates; and reinstalling the auxiliary equipment of the new dust collector body, completing the dust collector modification and replacement. This invention combines the original equipment requirements with the need for rapid modification, creating a completely new dust collector modification process that improves the efficiency of online modification and installation, reduces personnel input, and lowers safety risks.

Description

Technical Field

[0001] This invention relates to the field of metallurgical engineering technology, and more specifically, to a method for on-site replacement and modification of a dust collector. Background Technology

[0002] Currently, electricity supply still relies mainly on coal-fired power generation. In today's era of rapid economic development, the emission of large amounts of coal-fired flue gas, especially particulate matter with a particle size between 0.5 and 5 μm, poses the greatest threat to human health and is the main culprit for various toxic substances in the atmosphere. It is a key area for the prevention and control of particulate matter in the atmosphere.

[0003] Both electrostatic precipitators and bag filters are high-efficiency dust collectors, each with its own advantages. Under suitable operating conditions, both have achieved good practical application results. Electrostatic precipitators, with their low resistance, strong adaptability to flue gas changes, and low maintenance requirements, are widely used in industries such as metallurgy, power, and building materials, and to this day, they still hold a dominant position in the environmental protection field.

[0004] As dust collectors are used, their efficiency gradually decreases, eventually failing to meet usage requirements and necessitating replacement or upgrades. Currently, production typically requires shutting down the original dust collector first, followed by the gradual dismantling of the old one and the gradual installation of the new one. This results in a long downtime period, making it prone to environmental issues during the upgrade process. Summary of the Invention

[0005] In view of this, the present invention proposes a method for on-site replacement and modification of dust collectors, which aims to solve the problem that the existing method for on-site replacement and modification of dust collectors requires shutting down the original dust collector and then gradually dismantling the original dust collector and gradually installing the new dust collector, resulting in a long downtime period for the dust collector.

[0006] This invention proposes a method for on-site replacement and modification of a dust collector, comprising the following steps: installing a spare dust collector frame and a spare sliding mechanism on one side of the original dust collector installation location; assembling a new dust collector body on the spare dust collector frame and the spare sliding mechanism at a different location; installing a dust collector ring beam and a sliding pad at the bottom of the new dust collector body; the sliding pad is used for sliding on the spare sliding mechanism; the dust collector ring beam is located below the dust collector side plate of the new dust collector body and is connected to the dust collector side plate; the spare dust collector frame is used for installation support of the new dust collector body, and the spare sliding mechanism is used for sliding support of the installed new dust collector body; after the new dust collector body is assembled at a different location, the original dust collector body is then replaced with a new dust collector body. The dust collector is shut down, the original dust collector and its support frame are dismantled, and the foundation of the original dust collector is repaired. After the original dust collector is dismantled, a new dust collector support frame, dust collector frame beams, and dust collector hopper are installed on the original dust collector foundation. The dust collector frame beams serve as sliding beams and support beams for the new dust collector body. After the dust collector frame beams and dust collector hoppers are installed, the new dust collector body is moved one by one, so that the new dust collector body slides to the corresponding installation position on the dust collector frame beams. After the new dust collector body has slid, the connection between the dust collector hopper and the dust collector side plate is reinforced and sealed. After the new dust collector is reinforced and sealed, the auxiliary equipment of the new dust collector body is reinstalled, completing the dust collector modification and replacement.

[0007] Furthermore, in the above-mentioned method for replacing and modifying the dust collector in situ, the reinforcement and sealing of the connection between the dust collector hopper and the dust collector side plate specifically involves: installing an inclined sealing plate on the inner side of the dust collector ring beam and the sliding pad, and welding the two ends of the sealing plate to the upper flange plate of the dust collector ring beam and the upper flange plate of the dust collector frame beam, respectively; installing a reinforcing plate at the joint between the dust collector hopper side plate and the sealing plate, and welding the two ends of the reinforcing plate to the dust hopper side plate and the sealing plate, respectively.

[0008] Furthermore, in the above-mentioned method for replacing and modifying the dust collector in situ, when installing the reinforcing plate, the thickness of the reinforcing plate is determined according to the thickness of the ash hopper side plate; when determining the thickness of the reinforcing plate according to the thickness of the ash hopper side plate: the thickness Δδ of the ash hopper side plate is obtained, and a first preset ash hopper side plate thickness δ1, a second preset ash hopper side plate thickness δ2, and a third preset ash hopper side plate thickness δ3 are preset, and a first preset reinforcing plate thickness T1, a second preset reinforcing plate thickness T2, a third preset reinforcing plate thickness T3, and a fourth preset reinforcing plate thickness T4 are also preset. According to the relationship between the thickness Δδ of the ash hopper side plate and each of the preset ash hopper side plate thicknesses, each of the preset reinforcing plate thicknesses is selected as the thickness of the reinforcing plate.

[0009] Furthermore, in the above-mentioned method for replacing and modifying the dust collector in situ, when selecting the thickness of each preset reinforcing plate as the thickness of the reinforcing plate based on the relationship between the thickness Δδ of the side plate of the ash hopper and the thickness of each preset side plate of the ash hopper: when Δδ < δ1, the first preset reinforcing plate thickness T1 is selected as the thickness of the reinforcing plate; when δ1 ≤ Δδ < δ2, the second preset reinforcing plate thickness T2 is selected as the thickness of the reinforcing plate; when δ2 ≤ Δδ < δ3, the third preset reinforcing plate thickness T3 is selected as the thickness of the reinforcing plate; when Δδ ≥ δ3, the fourth preset reinforcing plate thickness T4 is selected as the thickness of the reinforcing plate; wherein, δ1 < δ2 < δ3, T1 > T2 > T3 > T4.

[0010] Furthermore, in the above-mentioned method for replacing and modifying the dust collector in situ, after selecting the i-th preset reinforcing plate thickness Ti as the thickness of the reinforcing plate, i=1, 2, 3, 4, the width of the reinforcing plate is determined according to the i-th preset reinforcing plate thickness Ti; when determining the width of the reinforcing plate: a first preset reinforcing plate width b1, a second preset reinforcing plate width b2, a third preset reinforcing plate width b3, a fourth preset reinforcing plate width b4, and a fifth preset reinforcing plate width b5 are set, and a reinforcing plate thickness preset reference value matrix L is set, where L(L1, L2, L3, L4), where L1 is the first preset reinforcing plate thickness preset reference value, L2 is the second preset reinforcing plate thickness preset reference value, L3 is the third preset reinforcing plate thickness preset reference value, and L4 is the fourth preset reinforcing plate thickness preset reference value. The width of the reinforcing plate is determined according to the relationship between the i-th preset reinforcing plate thickness Ti and each preset reinforcing plate thickness preset reference value.

[0011] Furthermore, in the above-mentioned method for replacing and modifying the dust collector in situ, when determining the width of the reinforcing plate based on the relationship between the thickness Ti of the i-th preset reinforcing plate and the preset reference values ​​of the thickness of each preset reinforcing plate: when Ti < L1, the width b1 of the first preset reinforcing plate is selected as the width of the reinforcing plate; when L1 ≤ Ti < L2, the width b2 of the second preset reinforcing plate is selected as the width of the reinforcing plate; when L2 ≤ Ti < L3, the width b3 of the third preset reinforcing plate is selected as the width of the reinforcing plate; when L3 ≤ Ti < L4, the width b4 of the fourth preset reinforcing plate is selected as the width of the reinforcing plate; when Ti ≥ L4, the width b5 of the fifth preset reinforcing plate is selected as the width of the reinforcing plate.

[0012] Furthermore, in the above-mentioned method of replacing and modifying the dust collector in situ, when installing a spare dust collector frame on one side of the original dust collector installation location, the spare dust collector frame is installed on the same straight line as the original support frame of the original dust collector.

[0013] Furthermore, in the above-mentioned method of replacing and modifying the dust collector in situ, when installing the new dust collector bracket, dust collector frame beam and dust collector hopper, the new dust collector bracket and dust collector frame beam are installed first, and after the dust collector frame beam is formed, the dust collector hoppers are installed one by one and the dust collector hoppers are welded to the dust collector frame beam as a whole.

[0014] Furthermore, in the above-mentioned method of replacing and modifying dust collectors in situ, when moving the new dust collector body one by one, a hydraulic push-pull device is used to slide the new dust collector body, which has been assembled on the dust collection platform, to the corresponding installation position of the dust collector one by one; the auxiliary equipment of the new dust collector body includes: scraper conveyor platform and scraper conveyor, bucket elevator and ash conveying system, corresponding electrical system, and dust collector inlet and outlet air ducts.

[0015] Furthermore, in the above-mentioned method of replacing and modifying the dust collector in situ, after the auxiliary equipment is reinstalled, the spare dust collection platform and spare sliding mechanism are removed.

[0016] The present invention provides a method for on-site replacement and modification of dust collectors, which involves dismantling the dust collector and its frame in situ and then sliding it back to its original position. This method combines the equipment's inherent requirements with the need for rapid modification, forming a completely new dust collector modification process. It improves the efficiency of online modification and installation, reduces personnel input, lowers safety risks, and solves the problem of long downtime caused by the existing method of shutting down the original dust collector and gradually dismantling and installing the new one. Furthermore, this method significantly shortens the dust collector modification period, allowing procedures that would otherwise require shutdown to be performed during normal production, thus reducing downtime and lowering the probability of environmental problems caused by dust collector modifications. Simultaneously, this method saves human resources by concentrating manpower on modifications within a short period, improving overall personnel efficiency. Furthermore, this method simultaneously promotes a change and extension to the structure of the dust collector itself, enabling the structural design of the dust collector equipment to be fully integrated with the overall transformation method, thus paving the way for the transformation of subsequent dust collector equipment. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0018] Figure 1 A flowchart illustrating the method for on-site replacement and modification of a dust collector according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the installation structure of the new dust collector provided in an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the connection node in the new dust collector provided in an embodiment of the present invention;

[0021] Figure 4 for Figure 3 A magnified view of a section at point A in the middle;

[0022] Figure 5 This is a schematic diagram of the original dust collector being dismantled, provided in an embodiment of the present invention.

[0023] Figure 6 A schematic diagram of the installation structure of the dust collector update bracket and dust collector frame beam provided in an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure of the first new dust collector sliding into place according to an embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the second new dust collector sliding into place according to an embodiment of the present invention;

[0026] Figure 9 A schematic diagram of the structure for dismantling the spare dust removal platform and spare sliding mechanism provided in an embodiment of the present invention. Detailed Implementation

[0027] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0028] See Figure 1 This is a flowchart illustrating the method for in-situ replacement and modification of a dust collector according to an embodiment of the present invention. As shown in the figure, the method for in-situ replacement and modification of a dust collector includes the following steps:

[0029] Step S1: Install a spare dust collector frame and a spare sliding mechanism on one side of the original dust collector installation location, and perform off-site assembly of the new dust collector body on the spare dust collector frame and spare sliding mechanism. Install a dust collector ring beam and a sliding pad at the bottom of the new dust collector body; the sliding pad is used for sliding on the spare sliding mechanism; the dust collector ring beam is set below the dust collector side plate of the new dust collector body and connected to the dust collector side plate; the spare dust collector frame is used for installation support of the new dust collector, and the spare sliding mechanism is used for sliding support of the installed new dust collector body.

[0030] Specifically, firstly, it can be done on one side of the original dust collector 1 installation location (e.g. Figure 2 As shown on the left, a spare dust collector stand 2 is installed. The spare dust collector stand 2 is installed on the same straight line as the original support stand 101 of the original dust collector 1. A spare sliding mechanism 3 is installed above the spare dust collector stand 2. Alternatively, the necessary stand structure and sliding structure for assembling the new dust collector can be constructed on-site, serving as the spare dust collector stand 2 and the spare sliding mechanism 3, respectively. The spare dust collector stand 2 is used to support the installation of the new dust collector body 4, supporting it to the preset installation height. The spare sliding mechanism 3 is used to slide and support the installed new dust collector body 4, allowing it to slide along the spare sliding mechanism 3 to the corresponding installation position. Then, the bottom structure of the new dust collector body 4 is arranged in the form of a ring beam, forming a dust collector ring beam 5, as shown below. Figure 3 and Figure 4 As shown, a sliding pad 6 is installed below the dust collector ring beam 5 to facilitate the sliding of the new dust collector body 4. Finally, according to the dust collector's own structural form, in production mode, the new dust collector body 4 is assembled on the spare dust collection platform 2 and the spare sliding mechanism 3, as shown. Figure 2 As shown. In this embodiment, two dust collectors are arranged side-by-side as an example; however, the number of dust collectors can be other than those specified in this embodiment. In this embodiment, the sliding pad 6 is used for sliding on the spare sliding mechanism 3; the dust collector ring beam 5 is located below the dust collector side plate 41 of the new dust collector body 4 and is connected to the dust collector side plate 41; the spare dust collector platform 2 is used for supporting the installation of the new dust collector body 4, and the spare sliding mechanism 3 is used for sliding support of the installed new dust collector body 4.

[0031] Step S2: After the new dust collector body is assembled in a different location, the original dust collector is shut down, the original dust collector and its support frame are dismantled, and the foundation of the original dust collector is repaired.

[0032] Specifically, after the new dust collector body 4 is assembled at a different location, communication with the production department begins regarding the downtime. Once the original dust collector 1 is shut down, it will be completely dismantled, including its original support frame 101. Finally, the foundation of the original dust collector 1 will be repaired, such as... Figure 5 As shown.

[0033] Step S3: After the original dust collector is removed, install the new dust collector bracket, dust collector frame beam, and dust collector hopper on the basis of the original dust collector; the dust collector frame beam is used as the sliding beam and support beam of the new dust collector body.

[0034] Specifically, after the original dust collector 1 is removed, the replacement bracket 7 and the dust collector frame beam 8 are installed first, such as... Figure 6 As shown; wherein, the dust collector frame beam 8 serves as a sliding beam and support beam for the new dust collector body 4. The dust collector frame beam 8 and the standby sliding mechanism 3 are arranged in a straight line so that the new dust collector body 4 can slide along the dust collector frame beam 8 and the standby sliding mechanism 3 onto the dust collector frame beam 8, and be supported by the bracket 7 and the dust collector frame beam 8. Then, after the dust collector frame beam 8 is formed, as... Figure 3 and Figure 4 As shown, the dust collector hoppers 9 are installed one by one and welded to the dust collector frame beams 8. In this embodiment, the dust collector frame beams 8 are cut with serrated structures (not shown in the figure) to serve as sliding support reaction supports, so that the hydraulic push-pull device can be locked at the serrated structures to apply a sliding force to the new dust collector body 4, facilitating the sliding of the facility.

[0035] Step S4: After the dust collector frame beam and dust collector hopper are installed, the new dust collector body is pushed one by one, so that the new dust collector body slides one by one to the corresponding installation position of the dust collector on the dust collector frame beam.

[0036] Specifically, after the dust collector frame beam 8 and dust collector hopper 9 are installed, the new dust collector body 4, which has been assembled on the dust collector platform 2, can be slid one by one to the corresponding installation position of the dust collector using a hydraulic push-pull device, such as... Figure 7 As shown, the first new dust collector body 4 slides into place; as Figure 8 As shown, the second new dust collector body 4 slides into place. The hydraulic push-pull device can refer to the top-push sliding structure disclosed in Chinese Publication No. CN218596067U, or other methods can be used to push the new dust collector bodies one by one.

[0037] Step S5: After the new dust collector body is slid, the connection between the dust collector hopper and the dust collector side plate is reinforced and sealed.

[0038] Specifically, due to the high pressure of the dust collector, air leakage will occur at the sliding point, that is, air leakage will occur during the sliding between the dust collector frame beam 8 and the dust collector ring beam 5. In order to achieve the sealing of the new dust collector, the connection between the dust collector hopper and the dust collector side plate is reinforced and sealed, and the dust collector body structure is slid-mounted. Therefore, after the new dust collector body 4 is slid-mounted, the connection between the dust collector hopper and the dust collector side plate is sealed, and the connection between the dust collector hopper 9 and the dust collector side plate 41 is reinforced. In this embodiment, firstly, on the inner side of the dust collector ring beam 5 and the sliding pad 6 (e.g., Figure 4 As shown on the left side, an inclined sealing plate 10 is installed, and both ends of the sealing plate 10 are welded to the upper flange plate 51 of the dust collector ring beam 5 and the upper flange plate 31 of the spare sliding mechanism 3, respectively. Then, a reinforcing plate 11 is installed at the joint between the dust collector hopper side plate 91 and the sealing plate 10, and both ends of the reinforcing plate 11 are welded to the dust collector side plate 91 and the sealing plate 10, respectively, to achieve reinforcement. The thickness of the sealing plate 10 is the same as the thickness of the dust collector side plate 91, which is 6mm.

[0039] Step S6: After the new dust collector is reinforced and sealed, the auxiliary equipment of the new dust collector body is reinstalled to complete the dust collector modification and replacement.

[0040] Specifically, after the main structure of the dust collector is slidably installed, the auxiliary structures and equipment of the new dust collector body 4 are reinstalled. The auxiliary equipment of the new dust collector body mainly includes: the scraper conveyor platform and scraper conveyor, the bucket elevator and ash conveying system, the corresponding electrical system, and the dust collector's inlet and outlet ducts. Finally, after the auxiliary equipment is reinstalled, all modifications to the dust collector are completed, and the spare dust collection platform 2 and spare sliding mechanism 3 are removed. Figure 9 As shown.

[0041] In step S5, preferably, when installing the reinforcing plate 11, the thickness of the reinforcing plate 11 can be determined based on the thickness of the ash hopper side plate 91. Specifically, when determining the thickness of the reinforcing plate 11 based on the thickness of the ash hopper side plate 91: the thickness Δδ of the ash hopper side plate 91 is obtained, and a first preset ash hopper side plate thickness δ1, a second preset ash hopper side plate thickness δ2, and a third preset ash hopper side plate thickness δ3 are preset. At the same time, a first preset reinforcing plate thickness T1, a second preset reinforcing plate thickness T2, a third preset reinforcing plate thickness T3, and a fourth preset reinforcing plate thickness T4 are also preset. Based on the relationship between the thickness Δδ of the ash hopper side plate 91 and each preset ash hopper side plate thickness, each preset reinforcing plate thickness is selected as the thickness of the reinforcing plate 11.

[0042] Furthermore, when selecting the thickness of each preset reinforcing plate as the thickness of the reinforcing plate 11 based on the relationship between the thickness Δδ of the ash hopper side plate 91 and the thickness of each preset ash hopper side plate:

[0043] When Δδ<δ1, the first preset reinforcement plate thickness T1 is selected as the thickness of the reinforcement plate;

[0044] When δ1≤Δδ<δ2, the second preset reinforcement plate thickness T2 is selected as the thickness of the reinforcement plate;

[0045] When δ2≤Δδ<δ3, the third preset reinforcement plate thickness T3 is selected as the thickness of the reinforcement plate;

[0046] When Δδ≥δ3, the fourth preset reinforcement plate thickness T4 is selected as the thickness of the reinforcement plate; where δ1<δ2<δ3, T1>T2>T3>T4.

[0047] It can be seen that, based on the relationship between the thickness Δδ of the ash hopper side plate 91 and the thickness of each preset ash hopper side plate, the thickness of each preset reinforcing plate is used as the thickness of the reinforcing plate 11. This allows for effective adjustment of the reinforcing plate thickness according to the thickness of the ash hopper side plate, enabling the selection of a suitable reinforcing plate thickness for reinforcement, thereby improving the reinforcement effect. Furthermore, when the ash hopper side plate 91 is thicker, the thickness of the reinforcing plate 11 is reduced. While providing a certain reinforcing performance with the thicker ash hopper side plate 91, this enhances the strength of the dust collector.

[0048] In this embodiment, after selecting the i-th preset reinforcing plate thickness Ti as the thickness of the reinforcing plate 11, i = 1, 2, 3, 4, the width of the reinforcing plate 11 can be determined based on the i-th preset reinforcing plate thickness Ti. Specifically, when determining the width of the reinforcing plate 11: a first preset reinforcing plate width b1, a second preset reinforcing plate width b2, a third preset reinforcing plate width b3, a fourth preset reinforcing plate width b4, and a fifth preset reinforcing plate width b5 are set, and a reinforcing plate thickness preset reference value matrix L is set, where L(L1, L2, L3, L4), where L1 is the first preset reinforcing plate thickness preset reference value, L2 is the second preset reinforcing plate thickness preset reference value, L3 is the third preset reinforcing plate thickness preset reference value, and L4 is the fourth preset reinforcing plate thickness preset reference value. The width of the reinforcing plate is determined based on the relationship between the i-th preset reinforcing plate thickness Ti and each preset reinforcing plate thickness preset reference value.

[0049] Specifically, when determining the width of the reinforcing plate based on the relationship between the thickness Ti of the i-th preset reinforcing plate and the preset reference values ​​of the thickness of each preset reinforcing plate:

[0050] When Ti < L1, the width of the first preset reinforcing plate b1 is selected as the width of the reinforcing plate;

[0051] When L1≤Ti<L2, the second preset reinforcing plate width b2 is selected as the width of the reinforcing plate;

[0052] When L2≤Ti<L3, the width of the third preset reinforcing plate b3 is selected as the width of the reinforcing plate;

[0053] When L3≤Ti<L4, the width of the fourth preset reinforcing plate b4 is selected as the width of the reinforcing plate;

[0054] When Ti≥L4, the width of the fifth preset reinforcing plate, b5, is selected as the width of the reinforcing plate. Wherein, L1<L2<L3<L4, and b1<b2<b3<b4<b5, preferably, 150mm≤b1<b2<b3<b4<b5≤200mm.

[0055] It can be seen that by adjusting the width of the reinforcing plate 11 according to its thickness, it is possible to prevent the reinforcing plate 11 from becoming too thick, which would reduce its connection and load-bearing capacity and cause it to fail. This ensures the compensating strength performance of the reinforcing plate.

[0056] In summary, the on-site replacement and modification method for dust collectors provided in this embodiment allows for the removal of the dust collector and its frame in situ, followed by a sliding reinstallation of the entire dust collector in its original location. This method combines the equipment's inherent requirements with the need for rapid modification, forming a completely new dust collector modification process. It improves the efficiency of online modification and installation, reduces personnel input, lowers safety risks, and solves the problem of long downtime caused by the existing method of shutting down the original dust collector and gradually dismantling and installing the new one. Furthermore, this method significantly shortens the dust collector modification period, allowing procedures that would otherwise require shutdown to be performed during normal production, thus reducing downtime and lowering the probability of environmental problems caused by dust collector modifications. Simultaneously, this method saves human resources by concentrating manpower on modifications within a short period, improving overall personnel efficiency. Furthermore, this method simultaneously promotes a change and extension to the structure of the dust collector itself, enabling the structural design of the dust collector equipment to be fully integrated with the overall transformation method, thus paving the way for the transformation of subsequent dust collector equipment.

[0057] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0058] Furthermore, it should be noted that, in the description of this invention, 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 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 invention according to the specific circumstances.

[0059] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A method of in-situ replacement retrofitting of a dust collector, characterized in that, Includes the following steps: A spare dust collector frame and a spare sliding mechanism are installed on one side of the original dust collector installation location. The new dust collector body is then assembled at a different location on the spare dust collector frame and the spare sliding mechanism. A dust collector ring beam and a sliding pad are installed at the bottom of the new dust collector body. The sliding pad is used for sliding on the spare sliding mechanism. The dust collector ring beam is located below the dust collector side plate of the new dust collector body and is connected to the dust collector side plate. The spare dust collector frame is used to support the installation of the new dust collector body, and the spare sliding mechanism is used to provide sliding support for the installed new dust collector body. After the new dust collector body is assembled in a different location, the original dust collector will be shut down, the original dust collector and its support frame will be dismantled, and the foundation of the original dust collector will be repaired. After the original dust collector is removed, a new dust collector support frame, dust collector frame beams, and dust collector hopper are installed on the basis of the original dust collector; the dust collector frame beams are used as sliding beams and support beams for the new dust collector body. After the dust collector frame beam and dust collector hopper are installed, the new dust collector body is pushed one by one, so that the new dust collector body slides one by one to the corresponding installation position of the dust collector on the dust collector frame beam. After the new dust collector body is slid out, the connection between the dust collector hopper and the dust collector side plate is reinforced and sealed. After the seal of the new dust collector is reinforced, the auxiliary equipment of the new dust collector body is reinstalled to complete the dust collector modification and replacement. The specific steps for reinforcing and sealing the connection between the dust collector hopper and the dust collector side plate are as follows: An inclined sealing plate is installed on the inner side of the dust collector ring beam and the sliding pad, and the two ends of the sealing plate are respectively welded to the upper flange plate of the dust collector ring beam and the upper flange plate of the dust collector frame beam. A reinforcing plate is installed at the joint between the dust collector hopper side plate and the sealing plate, and the two ends of the reinforcing plate are welded to the dust collector side plate and the sealing plate respectively. When installing the reinforcing plate, the thickness of the reinforcing plate is determined according to the thickness of the ash hopper side plate; When determining the thickness of the reinforcing plate based on the thickness of the ash hopper side plate: the thickness Δδ of the ash hopper side plate is obtained, and a first preset ash hopper side plate thickness δ1, a second preset ash hopper side plate thickness δ2, and a third preset ash hopper side plate thickness δ3 are preset. At the same time, a first preset reinforcing plate thickness T1, a second preset reinforcing plate thickness T2, a third preset reinforcing plate thickness T3, and a fourth preset reinforcing plate thickness T4 are also preset. Based on the relationship between the thickness Δδ of the ash hopper side plate and each of the preset ash hopper side plate thicknesses, each of the preset reinforcing plate thicknesses is selected as the thickness of the reinforcing plate. When selecting the thickness of each preset reinforcing plate as the thickness of the reinforcing plate based on the relationship between the thickness Δδ of the ash hopper side plate and the thickness of each preset ash hopper side plate: When Δδ<δ1, the first preset reinforcing plate thickness T1 is selected as the thickness of the reinforcing plate; When δ1≤Δδ<δ2, the second preset reinforcement plate thickness T2 is selected as the thickness of the reinforcement plate; When δ2≤Δδ<δ3, the third preset reinforcement plate thickness T3 is selected as the thickness of the reinforcement plate; When Δδ≥δ3, the fourth preset reinforcement plate thickness T4 is selected as the thickness of the reinforcement plate; Among them, δ1<δ2<δ3, T1>T2>T3>T4; After selecting the i-th preset reinforcement plate thickness Ti as the thickness of the reinforcement plate, i = 1, 2, 3, 4, the width of the reinforcement plate is determined according to the i-th preset reinforcement plate thickness Ti. When determining the width of the reinforcing plate: a first preset reinforcing plate width b1, a second preset reinforcing plate width b2, a third preset reinforcing plate width b3, a fourth preset reinforcing plate width b4, and a fifth preset reinforcing plate width b5 are set, and a reinforcing plate thickness preset reference value matrix L is set, where L (L1, L2, L3, L4) is the first preset reinforcing plate thickness preset reference value, L2 is the second preset reinforcing plate thickness preset reference value, L3 is the third preset reinforcing plate thickness preset reference value, and L4 is the fourth preset reinforcing plate thickness preset reference value. The width of the reinforcing plate is determined according to the relationship between the i-th preset reinforcing plate thickness Ti and each preset reinforcing plate thickness preset reference value. When determining the width of the reinforcing plate based on the relationship between the i-th preset reinforcing plate thickness Ti and the preset reference values ​​for the thickness of each preset reinforcing plate: When Ti < L1, the width b1 of the first preset reinforcing plate is selected as the width of the reinforcing plate; When L1≤Ti<L2, the second preset reinforcing plate width b2 is selected as the width of the reinforcing plate; When L2≤Ti<L3, the width b3 of the third preset reinforcing plate is selected as the width of the reinforcing plate; When L3≤Ti<L4, the width b4 of the fourth preset reinforcing plate is selected as the width of the reinforcing plate; When Ti≥L4, the width b5 of the fifth preset reinforcing plate is selected as the width of the reinforcing plate.

2. The method for on-site replacement and modification of a dust collector according to claim 1, characterized in that, When installing a spare dust collector stand on one side of the original dust collector installation location, the spare dust collector stand is installed on the same straight line as the original support stand of the original dust collector.

3. The method for on-site replacement and modification of a dust collector according to claim 1, characterized in that, When installing the dust collector replacement bracket, dust collector frame beam, and dust collector hopper, first install the dust collector replacement bracket and dust collector frame beam. After the dust collector frame beam is formed, install the dust collector hoppers one by one and weld the dust collector hoppers to the dust collector frame beam as a whole.

4. The method for on-site replacement and modification of a dust collector according to claim 1, characterized in that, When moving the new dust collector body one by one, the hydraulic push-pull device is used to slide the new dust collector body, which has been assembled on the dust collection platform, to the corresponding installation position of the dust collector one by one. The auxiliary equipment of the new dust collector body includes: scraper conveyor platform and scraper conveyor, bucket elevator and ash conveying system, corresponding electrical system, and dust collector inlet and outlet ducts.

5. The method for on-site replacement and modification of a dust collector according to claim 1, characterized in that, After the auxiliary equipment is reinstalled, the spare dust removal platform and spare sliding mechanism are removed.

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