Orifice plate structure and high temperature dust collector

Abstract

The utility model discloses orifice plate structure and high temperature dust remover. Orifice plate structure includes: upper orifice plate is equipped with the mounting hole site of adapting with filter core head connector on the upper orifice plate, lower orifice plate is equipped with the first through -hole of adapting with filter core pipe body on the lower orifice plate, the cavity of thickness 100~200mm is formed between the lower orifice plate and upper orifice plate, support mechanism is connected upper orifice plate and lower orifice plate and supports the cavity. The utility model discloses through the design of upper orifice plate, lower orifice plate and cavity, reduced the complexity of processing, make the production process more efficient, avoid the high cost problem that thick orifice plate brought, significantly reduce the overall cost of equipment, through the design of cavity, can reduce the overall weight of orifice plate structure, simultaneously keep its necessary support strength and stiffness. Through setting up the support mechanism that supports the cavity, the compression resistance of orifice plate structure is enhanced, and the strength and stiffness of orifice plate structure can be ensured by thin upper orifice plate and lower orifice plate.

Description

Technical Field

[0001] This utility model relates to the technical field of dust collectors, and more specifically, to perforated plate structures and high-temperature dust collectors. Background Technology

[0002] The dust collection element of a dust collector is a filter element. The filter element head is typically fixed to a perforated plate that is then mounted on the dust collector housing. For large volumes of industrial flue gas dust removal, to improve dust collection efficiency, multiple filter elements are usually integrated into the perforated plate to operate simultaneously.

[0003] The size and number of openings in the perforated plate must meet the filter element installation and layout requirements, especially when the flue gas volume is large and the filter element with a small pipe diameter is used, resulting in a large number of openings and a small spacing between them. To meet the strength and rigidity requirements under design conditions, the perforated plate needs to adopt a multi-hole thick plate structure, with a thickness generally ≥60mm. A large perforated plate thickness makes opening the holes more difficult, increases manufacturing difficulty, and significantly increases equipment costs.

[0004] Currently, dust collectors used in high-temperature (≥300℃) industrial flue gas dust removal systems are typically made of heat-resistant steel (such as Cr-Mo) or stainless steel. Therefore, the connection between the perforated plate and the dust collector shell is usually welded. However, the perforated plate is completely exposed to the flue gas environment, and its working metal wall temperature is close to the flue gas medium temperature. While the inner side of the dust collector shell is in direct contact with the flue gas, its outer side experiences natural air convection, resulting in a metal wall temperature much lower than the flue gas medium temperature. Consequently, the excessive temperature difference between the perforated plate and the dust collector shell during the filtration process can easily generate excessive local thermal stress, causing inconsistent expansion between the perforated plate and the shell. This can lead to localized weld cracking and bulging deformation of the dust collector shell. Utility Model Content

[0005] Firstly, the purpose of this utility model is to provide a perforated plate structure to solve the technical problem that perforated plates in the prior art need to adopt a multi-hole thick plate structure.

[0006] To achieve the first objective mentioned above, the technical solution of the perforated plate structure provided by this utility model is as follows: The perforated plate structure, installed inside the high-temperature dust collector and supporting the filter element, includes: an upper perforated plate with mounting holes adapted to the filter element head connector; a lower perforated plate with a first through hole adapted to the filter element tube body; a cavity with a thickness of 100-200mm formed between the lower and upper perforated plates; and a support mechanism connecting the upper and lower perforated plates and supporting the cavity.

[0007] The aforementioned perforated plate structure offers the following advantages: The design of the upper and lower perforated plates and the cavity reduces processing complexity, making the production process more efficient and avoiding the high costs associated with thick perforated plates, thus significantly reducing the overall cost of the equipment. The cavity design reduces the overall weight of the perforated plate structure while maintaining necessary support strength and rigidity. The matching of the mounting holes with the first through hole ensures rapid and efficient installation of the filter element. The support mechanism that supports the cavity enhances the compressive strength of the perforated plate structure. Using thinner upper and lower perforated plates ensures the strength and rigidity of the perforated plate structure, effectively supporting the entire cavity and the filter element installation, enhancing the overall stability and reliability of the equipment, and preventing deformation problems caused by insufficient support during long-term operation.

[0008] As a further improvement to the above-mentioned perforated plate structure, the support mechanism includes: a sleeve, the upper and lower open ends of which are respectively connected to the mounting hole and the first through hole, and the inner wall of the sleeve is adapted to the filter element tube body; and a support ring, which connects the outer periphery of the upper and lower perforated plates and is used to connect to the inner wall of the dust collector housing. Thus, the discrete distribution of the sleeves can provide better support; and the sleeves can also act as a seal, preventing gas from entering the cavity from the filter element head area (the tube body not connected to the head connector and located within the cavity).

[0009] As a further improvement to the above-mentioned perforated plate structure: the thickness of the upper perforated plate is 10-20 mm; the thickness of the lower perforated plate is 2-4 mm; the wall thickness of the sleeve is 2-4 mm; and the wall thickness of the support ring is 2-4 mm. Through the supporting action of the sleeve and the support ring, the necessary support strength and rigidity can be obtained using a relatively thin plate material.

[0010] As a further improvement to the above-mentioned perforated plate structure: the number of mounting holes, first through holes and sleeves is ≥50 sets; the inner diameter of the sleeve is 50-120mm; and the edge distance between adjacent sleeves is 20-50mm.

[0011] Secondly, the purpose of this utility model is to provide a perforated plate structure to solve the technical problems in the prior art where the perforated plate needs to adopt a multi-hole thick plate structure and the temperature difference between the perforated plate and the dust collector shell is too large during the filtration process.

[0012] To achieve the second objective mentioned above, the technical solution for the perforated plate structure provided by this utility model is as follows: A perforated plate structure, installed inside a high-temperature dust collector and supporting the filter element, includes: an upper perforated plate with mounting holes adapted to the filter element head connector; a lower perforated plate with a first through hole adapted to the filter element tube body; a cavity with a thickness of 100-200mm formed between the lower and upper perforated plates; and a heat exchange mechanism for inputting and discharging heat exchange medium into and out of the cavity, the heat exchange mechanism including a feed pipe and a discharge pipe communicating with the cavity.

[0013] The aforementioned perforated plate structure offers the following advantages: The design of the upper and lower perforated plates and the cavity reduces processing complexity, making the production process more efficient and avoiding the high costs associated with thick perforated plates, thus significantly reducing the overall cost of the equipment. The cavity design reduces the overall weight of the perforated plate structure while maintaining necessary support strength and rigidity. The matching of the mounting holes with the first through hole ensures rapid and efficient installation of the filter element. By incorporating a heat exchange mechanism for inputting and discharging the heat exchange medium into and out of the cavity, the working metal wall temperature of the perforated plate structure can be reduced, thereby decreasing the temperature difference between the perforated plate and the dust collector shell during the filtration process, reducing localized thermal stress, and preventing localized weld cracking and bulging deformation of the dust collector shell.

[0014] As a further improvement to the above-mentioned orifice plate structure, the heat exchange mechanism also includes a heat exchange channel disposed in the cavity, and the heat exchange channel is provided with a medium flow hole.

[0015] As a further improvement to the above-mentioned orifice plate structure: the heat exchange channel is formed by a first vertical partition plate supported between the upper and lower orifice plates, and the medium flow hole is disposed on the first vertical partition plate, the thickness of which is 2-4 mm. Thus, the first vertical partition plate also serves a supporting function.

[0016] As a further improvement to the above-mentioned orifice plate structure, the heat exchange channel includes: a first channel passing through the center of the cavity, with both ends connected to the feed pipe; a second channel passing through the center of the cavity and perpendicular to the first channel, with both ends connected to the discharge pipe; and an annular channel located on the outer periphery of the cavity, with its outlet end connected to the discharge pipe. This allows the heat exchange medium to be distributed rapidly and uniformly within the cavity, significantly improving heat exchange efficiency.

[0017] As a further improvement to the orifice plate structure described above, a partition plate is provided in the middle of the first channel; thereby improving the uniformity of heat exchange medium flow. The ratio of the width of the first and second channels to the outer diameter of the cavity is 0.02 to 0.03; the ratio of the width of the annular channel to the outer diameter of the cavity is 0.01 to 0.02. Therefore, determining the size of the heat exchange channels according to the size of the cavity can ensure better heat exchange efficiency.

[0018] As a further improvement to the above-mentioned perforated plate structure, a support mechanism is also included, which connects the upper and lower perforated plates and supports the cavity.

[0019] As a further improvement to the above-mentioned perforated plate structure: the support mechanism includes: a sleeve, the upper and lower open ends of which are respectively connected to the mounting hole and the first through hole, and the inner wall of the sleeve is adapted to the filter element tube body; a support ring, which connects the outer periphery of the upper and lower perforated plates, and is used to connect to the inner wall of the dust collector housing, and the support ring is provided with a second through hole adapted to the feed pipe and the discharge pipe.

[0020] As a further improvement to the above-mentioned perforated plate structure, the support mechanism further includes a second vertical partition that divides the cavity into multiple chambers along a direction parallel to the second channel.

[0021] Thirdly, the purpose of this utility model is to provide a high-temperature dust collector and a dust removal method that employs any one or a combination of the above two perforated plate structures.

[0022] To achieve the third objective mentioned above, the technical solution of the high-temperature dust collector and dust removal method provided by this utility model is as follows: The high-temperature dust collector includes multiple filter elements and the aforementioned perforated plate structure, with a gap between the outer periphery of the perforated plate structure and the dust collector housing. When the perforated plate structure described in the second aspect is used, the dust collector housing is provided with a third through hole adapted to the feed pipe and discharge pipe.

[0023] As a further improvement to the aforementioned high-temperature dust collector, it also includes an orifice plate mounting structure, which comprises: a support, the support being connected to the inner wall of the dust collector housing and supporting the outer side of the lower orifice plate; and a sealing expansion joint, the sealing expansion joint being expanded and connected between the outer side of the upper orifice plate and the inner wall of the dust collector housing.

[0024] As a further improvement to the above-mentioned high-temperature dust collector: the support is at least three and symmetrically distributed on the inner wall of the dust collector housing; the support includes a support plate and ear plates located on both sides below the support plate.

[0025] As a further improvement to the above-mentioned high-temperature dust collector: a flange is provided on the outer periphery of the lower perforated plate, and the flange and the support plate are provided with matching bolt holes, and the flange and the support plate are connected by bolts and nuts.

[0026] As a further improvement to the aforementioned high-temperature dust collector, the flange is annular.

[0027] Based on the two perforated plate structures mentioned above, the high-temperature dust collector of this invention has a gap between the outer periphery of the perforated plate structure and the dust collector shell. This gap can provide a buffer for the expansion of the perforated plate and the shell, effectively preventing the shell from bulging and deforming. In addition, a new perforated plate installation structure is adopted, which makes the installation of the perforated plate structure and the shell more efficient and has a good sealing effect.

[0028] The dust removal method involves using the aforementioned high-temperature dust collector to filter the high-temperature dust-laden gas.

[0029] It is evident that the perforated plate structure, high-temperature dust collector, and dust removal method of this utility model, by adopting a perforated plate structure with a support mechanism and / or heat exchange mechanism, not only have a simple structure, are easy to process and manufacture, have low material and processing costs, and high strength and rigidity, but also effectively solve the technical problems in the prior art where the perforated plate needs to adopt a multi-hole thick plate structure and the temperature difference between the perforated plate and the dust collector shell is too large during the filtration process, thus possessing strong practicality.

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the present invention. Attached Figure Description

[0031] The accompanying drawings, which form part of this utility model, are used to aid in understanding this utility model. The content provided in the drawings and the related descriptions in this utility model can be used to explain this utility model, but do not constitute an undue limitation of this utility model. In the drawings: Figure 1 This is a schematic diagram of the high-temperature dust collector according to Embodiment 1 of this utility model.

[0032] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0033] Figure 3 for Figure 1 BB-direction sectional view.

[0034] Figure 4 for Figure 3 CC-direction sectional view.

[0035] Figure 5 for Figure 4 Enlarged view of point D in the middle.

[0036] Figure 6 This is a schematic diagram of the high-temperature dust collector according to Embodiment 2 of this utility model.

[0037] Figure 7 for Figure 6 Enlarged view of point E in the middle.

[0038] Figure 8 for Figure 6 FF section view.

[0039] Figure 9 This is a schematic diagram of the perforated plate structure in the high-temperature dust collector of Embodiment 3 of this utility model.

[0040] Figure 10 for Figure 9 GG section view.

[0041] Figure 11 This is a schematic diagram of the flow path of the heat exchange medium in the perforated plate structure cavity of the high-temperature dust collector in Embodiment 3 of this utility model.

[0042] Figure 12 This is a schematic diagram of the perforated plate mounting structure in the high-temperature dust collector of Embodiment 3 of this utility model.

[0043] Figure 13 This is a schematic diagram of the perforated plate structure in the high-temperature dust collector of embodiment 4 of the present utility model.

[0044] Figure 14 for Figure 13 HH sectional view.

[0045] Figure 15 for Figure 14 Enlarged view of point I in the middle.

[0046] Figure 16 for Figure 14 Enlarged view of point J in the middle.

[0047] The relevant markings in the above figures are: 100-Dust collector housing, 200-Filter element, 300-Perforated plate structure, 410-Upper perforated plate, 420-Lower perforated plate, 421-Flange, 431-Sleeve, 432-Support ring, 433-Second vertical partition, 511-Support plate, 512-Ear plate, 520-Sealing expansion joint, 610-Infeed pipe, 620-Discharge pipe, 630-Media flow hole, 640-First vertical partition, 710-First channel, 711-Separator plate, 720-Second channel, 730-Annular channel. Detailed Implementation

[0048] The present invention will now be clearly and completely described in conjunction with the accompanying drawings. Those skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be particularly noted that: The technical solutions and features provided in the various parts of this utility model, including the following description, can be combined with each other without conflict.

[0049] Furthermore, the embodiments of the present invention described below are generally only a part of the embodiments of the present invention, and not all of the embodiments. Therefore, all other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the protection scope of the present invention.

[0050] Regarding the terminology and units used in this utility model: The terms "comprising," "having," and any variations thereof in the specification, claims, and related parts of this utility model are intended to cover non-exclusive inclusion. Example 1

[0051] Figure 1 This is a schematic diagram of the high-temperature dust collector in this embodiment. Figure 2 for Figure 1 Enlarged view of point A in the middle. Figure 3 for Figure 1 BB-direction sectional view. Figure 4 for Figure 3 CC-direction sectional view. Figure 5 for Figure 4 Enlarged view of point D in the middle.

[0052] like Figure 1 The high-temperature dust collector shown includes multiple filter elements 200, a perforated plate structure 300, and a perforated plate mounting structure. The perforated plate structure 300 is located inside the high-temperature dust collector and supports the filter elements 200. A gap is left between the outer periphery of the perforated plate structure 300 and the dust collector housing 100.

[0053] like Figure 1-5 The perforated plate structure 300 shown includes an upper perforated plate 410, a lower perforated plate 420, and a support mechanism. The upper perforated plate 410 has mounting holes adapted to the head connector of the filter element 200. The lower perforated plate 420 has a first through hole adapted to the body of the filter element 200. A cavity with a thickness of 137 mm is formed between the lower perforated plate 420 and the upper perforated plate 410 (i.e., the distance between the edges of the upper perforated plate 410 and the lower perforated plate 420). The support mechanism connects the upper perforated plate 410 and the lower perforated plate 420 and supports the cavity.

[0054] The support mechanism includes a sleeve 431 and a support ring 432. The upper and lower open ends of the sleeve 431 are connected to the mounting hole and the first through hole, respectively, and the inner wall of the sleeve 431 is adapted to the tube body of the filter element 200. The support ring 432 is connected to the outer periphery of the upper perforated plate 410 and the lower perforated plate 420, and the support ring 432 is used to connect with the inner wall of the dust collector housing 100.

[0055] The upper perforated plate 410 has a thickness of 14 mm; the lower perforated plate 420 has a thickness of 3 mm; the sleeve 431 has a wall thickness of 3 mm; and the support ring 432 has a wall thickness of 3 mm.

[0056] The number of mounting holes, first through holes, and sleeves 431 is greater than 500 sets (the specific number can be counted from the figure); the inner diameter of the sleeve 431 is 78mm; the edge distance between adjacent sleeves 431 is 36mm.

[0057] The orifice plate mounting structure includes a support and a sealing expansion joint 520. The support is connected to the inner wall of the dust collector housing 100 and supports the outer side of the lower orifice plate 420. The sealing expansion joint 520 expands and connects between the outer side of the upper orifice plate 410 and the inner wall of the dust collector housing 100.

[0058] The support brackets are four in number and symmetrically distributed on the inner wall of the dust collector housing 100. Each support bracket includes a support plate 511 and ear plates 512 located on both sides below the support plate 511. An annular flange 421 is provided on the outer periphery of the lower perforated plate 420. The flange 421 and the support plate 511 are provided with matching bolt holes, and the flange 421 and the support plate 511 are connected by bolts and nuts (the bolt holes, bolts, and nuts are not shown in the figure). Example 2

[0059] Figure 6 This is a schematic diagram of the high-temperature dust collector in this embodiment. Figure 7 for Figure 6 Enlarged view of point E in the middle. Figure 8 for Figure 6 FF section view.

[0060] Based on Example 1, the differences between the high-temperature dust collector and the orifice plate structure 300 in this example are: Figure 6-7 As shown, it also includes a heat exchange mechanism for inputting and discharging heat exchange medium into and out of the cavity. The heat exchange mechanism includes a feed pipe 610 and a discharge pipe 620 communicating with the cavity. The support ring 432 is provided with a second through hole adapted to the feed pipe 610 and the discharge pipe 620. The dust collector housing 100 is provided with a third through hole adapted to the feed pipe 610 and the discharge pipe 620. Example 3

[0061] Figure 9 This is a schematic diagram of the perforated plate structure in the high-temperature dust collector of this embodiment. Figure 10 for Figure 9 GG section view. Figure 11 This is a schematic diagram of the flow path of the heat exchange medium in the orifice plate structure cavity of the high-temperature dust collector in this embodiment. Figure 12 This is a schematic diagram of the perforated plate mounting structure in the high-temperature dust collector of this embodiment.

[0062] Based on Example 2, the differences between the high-temperature dust collector and the orifice plate structure 300 in this example are: Figure 9-12 As shown, the heat exchange mechanism also includes a heat exchange channel disposed in the cavity, and the heat exchange channel is provided with a medium flow hole 630.

[0063] The heat exchange channel is formed by a first vertical partition 640 (horizontal, vertical and annular) supported between the upper orifice plate 410 and the lower orifice plate 420. The medium flow hole 630 is provided on the first vertical partition 640. The thickness of the first vertical partition 640 is 3mm.

[0064] The heat exchange channel includes a first channel 710, a second channel 720, and an annular channel 730. The first channel 710 passes through the center of the cavity, and its two ends are connected to the feed pipe 610. A partition plate 711 is provided in the middle of the first channel 710. The second channel 720 passes through the center of the cavity and is perpendicular to the first channel 710. Its two ends are connected to the discharge pipe 620. The annular channel 730 is located on the outer periphery of the cavity, and its outlet end is connected to the discharge pipe 620.

[0065] The ratio of the width of the first channel 710 and the second channel 720 (94 mm in this example) to the outer diameter of the cavity (i.e., the inner diameter of the support ring 432, which is 3529 mm) is 0.0266; the ratio of the width of the annular channel 730 (47.5 mm in this example) to the outer diameter of the cavity is 0.0135. Example 4

[0066] Figure 13 This is a schematic diagram of the perforated plate structure in the high-temperature dust collector of this embodiment. Figure 14 for Figure 13 HH sectional view. Figure 15 for Figure 14 Enlarged view of point I in the middle. Figure 16 for Figure 14 Enlarged view of point J in the middle.

[0067] Based on Example 3, the differences between the high-temperature dust collector and the orifice plate structure 300 in this example are: Figure 12-15 As shown, the support mechanism also includes a second vertical partition 433 that divides the cavity into multiple chambers along a direction parallel to the second channel 720.

[0068] The foregoing has described the relevant content of this utility model. Those skilled in the art will be able to implement this utility model based on these descriptions. All other embodiments obtained by those skilled in the art based on the above description of this utility model without inventive effort should fall within the protection scope of this utility model.

Claims

1. A perforated plate structure provided in a high temperature dust collector and supporting a filter core (200), characterized in that: The hole plate structure comprises: an upper hole plate (410) provided with a mounting hole position adapted to the head joint of the filter core (200); a lower hole plate (420) provided with a first through hole adapted to the pipe body of the filter core (200); the lower hole plate (420) and the upper hole plate (410) form a cavity with a thickness of 100-200 mm; a support mechanism connecting the upper hole plate (410) and the lower hole plate (420) and supporting the cavity.

2. The well plate structure of claim 1, wherein: The support mechanism comprises: a sleeve (431) with its upper and lower opening ends connected to the mounting hole position and the first through hole respectively, and the inner wall of the sleeve (431) being adapted to the pipe body of the filter core (200); a support ring (432) connecting the outer periphery of the upper hole plate (410) and the lower hole plate (420), and being used for connecting with the inner wall of the dust collector shell (100).

3. The well plate structure of claim 2, wherein: The thickness of the upper hole plate (410) is 10-20 mm; the thickness of the lower hole plate (420) is 2-4 mm; the wall thickness of the sleeve (431) is 2-4 mm; and the wall thickness of the support ring (432) is 2-4 mm.

4. The well plate structure of claim 3, wherein: The number of the mounting hole position, the first through hole and the sleeve (431) is ≥50 groups; the inner diameter of the sleeve (431) is 50-120 mm; and the edge distance of adjacent sleeves (431) is 20-50 mm.

5. A high temperature dust collector comprising a plurality of filter cartridges (200), characterized in that: The hole plate structure (300) of any one of claims 1-4 is further provided with a gap between the outer periphery of the hole plate structure (300) and the dust collector shell (100).

6. The high temperature dust precipitator of claim 5 wherein: The hole plate mounting structure comprises: a bracket connected to the inner wall of the dust collector shell (100) and supporting the outer side of the lower hole plate (420); a sealing expansion joint (520) expandedly connected between the outer side of the upper hole plate (410) and the inner wall of the dust collector shell (100).

7. The high temperature dust precipitator of claim 6 wherein: The bracket is at least three and symmetrically distributed on the inner wall of the dust collector shell (100); and the bracket comprises a support plate (511) and ear plates (512) arranged on both sides below the support plate (511).

8. The high temperature dust precipitator of claim 7 wherein: A flange (421) is arranged on the outer periphery of the lower hole plate (420), the flange (421) is provided with a bolt hole adapted to the support plate (511), and the flange (421) and the support plate (511) are connected through a bolt and a nut.

9. The high temperature dust precipitator of claim 8 wherein: The flange (421) is annular.

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