Blast furnace gas pipeline silencer

Abstract

The utility model discloses a blast furnace gas pipeline silencer which comprises a shell, a gas inlet is formed in one side of the shell, a gas outlet is formed in the other side of the shell, a silencing assembly is arranged in the shell and comprises a silencing plate, a second silencing cavity is formed in the inner wall of the shell, and a gas outlet is formed in the other side of the shell. The inner wall of the second silencing cavity is connected with a sound absorption plate through bolts, one side of the sound absorption plate is connected with a silencing plate through bolts, the circumferential inner wall of the silencing plate is provided with a first silencing cavity, the circumferential outer wall of the silencing plate is connected with a fixing column through bolts, and one end of the fixing column is connected with the inner wall of the shell through bolts. According to the blast furnace gas pipeline silencer, due to the fact that the silencer is provided with the silencing assembly, the noise reduction effect of the device can be better improved, and due to the fact that the device is provided with the overhauling assembly, the service life of the device can be better maintained.

Description

Technical Field

[0001] This utility model relates to the field of noise pollution control technology, specifically a blast furnace gas pipeline silencer. Background Technology

[0002] Blast furnace gas generates strong low-frequency noise (110~130dB) due to sudden changes in flow rate and pressure drop during the pressure regulating valve group or pressure reduction process, which far exceeds the limit of the "Industrial Enterprise Noise Hygiene Standard". It needs to be reduced to below 85dB by a silencer to protect the health of workers and the surrounding environment. Therefore, a blast furnace gas pipeline silencer is needed.

[0003] Existing technology, patent document CN219712695U, discloses a gas pipeline silencer, comprising a silencer body and reducing bodies installed at both ends of the silencer body. Connecting pipes and flanges are installed at the ends of the reducing bodies. The silencer body includes at least one hollow cavity and a sound-absorbing body connected to the hollow cavity on both sides. The hollow cavity includes an outer partition plate, an inner perforated plate, and sound-absorbing material filled between them. The sound-absorbing body includes two perforated plates surrounding the cavity and sound-absorbing material filled within the cavity formed by the two perforated plates. The ends of the sound-absorbing body facing the air inlet and outlet are both set as triangular prisms. The opening ratio of the inner perforated plate and the perforated plates is not less than 20%. This utility model has a simple structure, is easy to install, allows gas to pass through smoothly, releases static electricity when connected to the gas pipeline via the outer steel plate, ensures safe use, rationally distributes gas pressure, meets the requirements for sound absorption and energy dissipation with the opening ratio, significantly reduces noise, and achieves the required silencing effect.

[0004] Although the device has many beneficial effects, it still has the following problems: the sound absorption effect of the device is weak by means of the opening ratio alone; secondly, when there is a problem inside the device, it is cumbersome to disassemble the whole device. Summary of the Invention

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved:

[0007] To address the aforementioned issues of weak sound absorption and cumbersome disassembly, this utility model is proposed.

[0008] Therefore, the purpose of this utility model is to provide a blast furnace gas pipeline silencer, which aims to solve the problem of weak sound absorption effect as much as possible and to facilitate maintenance.

[0009] 2. Technical Solution:

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] A blast furnace gas pipeline silencer includes a housing, an air inlet on one side of the housing, an air outlet on the other side of the housing, and a silencer assembly inside the housing. The silencer assembly includes a silencer plate, and a second silencer cavity is formed in the inner wall of the housing. A sound-absorbing plate is bolted to the inner wall of the second silencer cavity, and a silencer plate is bolted to one side of the sound-absorbing plate. A first silencer cavity is formed in the inner circumference of the silencer plate, and a fixing column is bolted to the outer circumference of the silencer plate. One end of the fixing column is bolted to the inner wall of the housing, and a maintenance assembly is provided on the outer circumference of the housing. The structural design of the fixing column facilitates better fixation of the silencer plate, thereby helping to maintain the overall stability of the device.

[0012] As a preferred embodiment of the blast furnace gas pipeline silencer of this utility model, the silencer plate has a sound-absorbing plate inside and a sound-absorbing plate on one side.

[0013] As a preferred embodiment of the blast furnace gas pipeline silencer of this utility model, the sound-absorbing plate is provided with sound-absorbing cotton inside, and sound-absorbing cotton is provided on one side of the sound-absorbing cotton. The multi-layer structure design facilitates a better noise reduction structure design for the device, thus improving the practicality of the device.

[0014] As a preferred embodiment of the blast furnace gas pipeline silencer of this utility model, the maintenance component includes a cover plate, a groove is formed on the outer circumference of the shell, the inner wall of the groove is connected to the cover plate by a damping bearing, a handle is bolted to the surface of the cover plate, a rubber strip is provided on the surface of the cover plate, and a rubber pad is provided on the inner wall of the groove. The structural design of the rubber strip and the rubber pad facilitates better maintenance of the sealing effect inside the device.

[0015] In a preferred embodiment of the blast furnace gas pipeline silencer of this utility model, the sound-absorbing plate is made of centrifugal glass wool, and the sound-absorbing plate is made of porous aluminum plate.

[0016] In a preferred embodiment of the blast furnace gas pipeline silencer of this utility model, the sound-absorbing cotton is made of glass fiber cloth and the sound-absorbing cotton is made of polyester fiber.

[0017] 3. Beneficial effects:

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This type of blast furnace gas pipeline silencer is equipped with a sound-absorbing component. When gas passes through the inside of the device, the noise is effectively reduced by the cooperation between the internal structures of the first and second sound-absorbing chambers. This results in a double sound absorption design, which helps to meet the emission standards and improves the noise reduction effect of the device to a certain extent.

[0020] This type of blast furnace gas pipeline silencer is equipped with maintenance components. The cover plate and handle structure design facilitate maintenance in case of unexpected situations inside the shell. The rubber ring and rubber gasket structure design reduces the possibility of gas leakage, thereby facilitating better maintenance of the device's service life. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] in:

[0023] Figure 1 This is a schematic diagram of the overall structure of a blast furnace gas pipeline silencer according to the present invention.

[0024] Figure 2 This is a schematic cross-sectional view of the overall structure of a blast furnace gas pipeline silencer according to the present invention.

[0025] Figure 3 This utility model relates to a silencer for blast furnace gas pipelines. Figure 2 A schematic diagram of the structure of section A in the middle;

[0026] Figure 4 This is a schematic diagram of the maintenance component structure of a blast furnace gas pipeline silencer according to the present invention.

[0027] The following are the labels in the diagram: 1. Housing; 2. Air inlet; 3. Air outlet; 4. Silencing assembly; 41. First silencing chamber; 42. Fixing column; 43. Silencing plate; 44. Second silencing chamber; 45. Sound-absorbing cotton; 46. Sound-absorbing cotton; 47. Silencing plate; 48. Sound-absorbing plate; 49. Sound-absorbing plate; 5. Maintenance assembly; 51. Groove; 52. Rubber pad; 53. Cover plate; 54. Rubber strip; 55. Handle. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0030] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to 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 the present invention.

[0031] The term "connection method" should be interpreted broadly. For example, "connection" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0033] This utility model provides an overall structural schematic diagram of an embodiment of a blast furnace gas pipeline silencer, including:

[0034] Please see Figures 1-4 This utility model provides a technical solution:

[0035] A blast furnace gas pipeline silencer includes a housing 1, an air inlet 2 on one side of the housing 1, and an air outlet 3 on the other side of the housing 1. A silencer assembly 4 is disposed inside the housing 1, the silencer assembly 4 including a silencer plate 43. A second silencer cavity 44 is formed in the inner wall of the housing 1. A sound-absorbing plate 49 is bolted to the inner wall of the second silencer cavity 44. A silencer plate 43 is bolted to one side of the sound-absorbing plate 49. A first silencer cavity 41 is formed in the inner circumference of the silencer plate 43. A fixing column 42 is bolted to the outer circumference of the silencer plate 43. One end of the fixing column 42 is bolted to the inner wall of the housing 1. A maintenance assembly 5 is disposed in the outer circumference of the housing 1. When gas passes through the device, the cooperation between the internal structures of the first silencer cavity 41 and the second silencer cavity 44 results in a dual sound absorption design, thus significantly reducing the decibel level.

[0036] It is worth noting that, in order to achieve a better initial noise reduction effect on the device, a sound-absorbing plate 47 is provided inside the sound-absorbing plate 43, and a sound-absorbing plate 48 is provided on one side of the sound-absorbing plate 47. Through the structural design of the sound-absorbing plate 43, it is easy to achieve a better initial noise reduction effect on the device.

[0037] Next, in order to achieve a better dual noise reduction effect for the device, the sound-absorbing plate 49 is specifically provided with sound-absorbing cotton 45 inside, and sound-absorbing cotton 46 is provided on one side of the sound-absorbing cotton 45. Through the structural design of the sound-absorbing plate 49, it is easy to achieve a better dual noise reduction effect for the device.

[0038] Meanwhile, to extend the service life of the maintenance device, the maintenance component 5 specifically includes a cover plate 53. A groove 51 is formed on the outer circumferential wall of the housing 1. The inner wall of the groove 51 is connected to the cover plate 53 through a damping bearing. A handle 55 is bolted to the surface of the cover plate 53. A rubber strip 54 is provided on the surface of the cover plate 53. A rubber pad 52 is provided on the inner wall of the groove 51. Through the structural design of the cover plate 53 and the handle 55, the maintenance is facilitated in case of other unexpected situations inside the housing 1. Furthermore, the structural design of the rubber ring and the rubber pad 52 reduces the possibility of gas leakage, thereby extending the service life of the maintenance device.

[0039] Furthermore, in order to better improve the overall noise reduction effect of the device, the sound-absorbing plate 47 is made of centrifugal glass wool, and the sound-absorbing plate 48 is made of porous aluminum plate. The sound-absorbing plate 47 made of centrifugal glass wool and the sound-absorbing plate 48 made of porous aluminum plate can better improve the overall noise reduction effect of the device during the gas flow process.

[0040] Finally, in order to better meet emission requirements, the sound-absorbing cotton 45 is made of glass fiber cloth, and the sound-absorbing cotton 46 is made of polyester fiber. The sound-absorbing cotton 45 made of glass fiber cloth and the sound-absorbing cotton 46 made of polyester fiber can effectively absorb noise inside the pipe and better meet emission requirements.

[0041] In addition, the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the internal structure and method.

[0042] Combination Figures 1-4 The specific usage process of the blast furnace gas pipeline silencer according to this embodiment is as follows:

[0043] 1: When using this type of blast furnace gas pipeline silencer, after the operator moves the housing 1 to a suitable position, the air inlet 2 and the air outlet 3 are installed in the suitable position through the flange, and then it can be used.

[0044] 2: When the device needs to perform noise reduction operation on the pipeline, the device is equipped with a noise reduction component 4. The device has a first noise reduction chamber 41 and a second noise reduction chamber 44. Through the structure of the sound-absorbing cotton 45 and the sound-absorbing cotton 46 inside the sound-absorbing plate 43, and the structure of the sound-absorbing plate 47 and the sound-absorbing plate 48 inside the sound-absorbing plate 49, the noise is doubled and the noise is absorbed, which makes it easier to meet the emission requirements of the standard and to a certain extent helps to improve the noise reduction effect of the device.

[0045] 3: When the device needs to be repaired, the device is equipped with a repair component 5. The operator can lift the cover plate 53 from the inner wall of the groove 51 by holding the handle 55 and connecting it through the damping bearing. The internal device can then be repaired. The structural design of the rubber strip 54 and rubber pad 52 reduces the possibility of gas leakage, thereby facilitating better maintenance of the overall service life of the device.

[0046] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A silencer for blast furnace gas pipelines, characterized in that, The device includes a housing (1), an air inlet (2) on one side of the housing (1), an air outlet (3) on the other side of the housing (1), a sound-absorbing assembly (4) inside the housing (1), the sound-absorbing assembly (4) including a sound-absorbing plate (43), a second sound-absorbing cavity (44) on the inner wall of the housing (1), a sound-absorbing plate (49) connected to the inner wall of the second sound-absorbing cavity (44) by bolts, a sound-absorbing plate (43) on one side of the sound-absorbing plate (49) by bolts, a first sound-absorbing cavity (41) on the inner circumference of the sound-absorbing plate (43), a fixing column (42) on the outer circumference of the sound-absorbing plate (43) by bolts, one end of the fixing column (42) being connected to the inner wall of the housing (1) by bolts, and a maintenance assembly (5) on the outer circumference of the housing (1).

2. The blast furnace gas pipeline silencer according to claim 1, characterized in that, The sound-absorbing plate (47) is provided inside the sound-absorbing plate (43), and a sound-absorbing plate (48) is provided on one side of the sound-absorbing plate (47).

3. The blast furnace gas pipeline silencer according to claim 1, characterized in that, The sound-absorbing panel (49) is provided with sound-absorbing cotton (45) inside, and sound-absorbing cotton (46) is provided on one side of the sound-absorbing cotton (45).

4. The blast furnace gas pipeline silencer according to claim 1, characterized in that, The maintenance assembly (5) includes a cover plate (53), and a groove (51) is provided on the outer circumference of the housing (1). The inner wall of the groove (51) is connected to the cover plate (53) by a damping bearing. A handle (55) is bolted to the surface of the cover plate (53). A rubber strip (54) is provided on the surface of the cover plate (53), and a rubber pad (52) is provided on the inner wall of the groove (51).

5. The blast furnace gas pipeline silencer according to claim 2, characterized in that, The sound-absorbing plate (47) is made of centrifugal glass wool, and the sound-absorbing plate (48) is made of porous aluminum plate.

6. The blast furnace gas pipeline silencer according to claim 3, characterized in that, The sound-absorbing cotton (45) is made of glass fiber cloth, and the sound-absorbing cotton (46) is made of polyester fiber.

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