A pipeline steam purging silencer

Abstract

This application belongs to the technical field of municipal pipeline cleaning equipment manufacturing, specifically a pipeline steam purging silencer, including a hollow primary silencer structure, a hollow secondary silencer structure, an input pipe, and an output bend. The primary silencer structure is located inside the secondary silencer structure. The input end of the input pipe is located outside the secondary silencer structure, and the output end of the input pipe is inside the secondary silencer structure and connects to its interior. An output bend is provided on the secondary silencer structure away from the input pipe. A first drainer is provided on the primary silencer structure, extending to the outside of the secondary silencer structure. A collection chamber is provided at the bottom of the secondary silencer structure. A second drainer, which cooperates with the collection chamber, is provided on the side wall of the secondary silencer structure. Through holes are provided on the side wall of the primary silencer structure. This invention solves the problems of insufficient noise control, low debris collection efficiency, and difficult maintenance of current silencer equipment.

Description

Technical Field

[0001] This application belongs to the field of municipal pipeline cleaning equipment manufacturing technology, specifically a pipeline steam purging silencer. Background Technology

[0002] Currently, temporary vent pipes or simple silencers are typically used in the pre-commissioning purging of steam pipelines. These devices mainly reduce noise or have no noise reduction effect by diffusing the airflow at the pipe inlet or by setting up a simple sound insulation layer, while collecting debris through filters or containers at the end of the pipeline.

[0003] However, this method has many drawbacks:

[0004] Insufficient noise control: Traditional silencers have a simple structure and poor attenuation effect on high-frequency steam flow impact noise, resulting in a still relatively high noise level (usually exceeding 110dB).

[0005] Low debris collection efficiency: Temporary filters are prone to clogging and lack debris guidance structures, causing some rust, welding slag, etc. to scatter into the surrounding environment, threatening the safety of personnel and equipment.

[0006] Poor structural stability: The use of non-standard components (such as ordinary steel pipe welding) makes the welds prone to cracking or the components to deform under high temperature and pressure during long-term use.

[0007] Maintenance difficulties: The filter or collection device is inconvenient to disassemble and cannot be reused. Utility Model Content

[0008] The purpose of this application is to address the shortcomings of existing technologies by designing a pipeline steam purging silencer using a primary and secondary silencing structure in conjunction with an input pipe and an output bend. The two-stage silencing structure rapidly attenuates high-frequency steam flow impact noise, while the collection chamber collects impurities and two drainers discharge wastewater, thus solving the problems of insufficient noise control, low waste collection efficiency, and difficult maintenance of current silencing equipment.

[0009] To achieve the above objectives, this application adopts the following technical solution:

[0010] A pipeline steam purging silencer includes a hollow primary silencer structure, a hollow secondary silencer structure, an input pipe, and an output bend. The primary silencer structure is located inside the secondary silencer structure. The input end of the input pipe is located outside the secondary silencer structure, and the output end of the input pipe is inside the secondary silencer structure and communicates with the interior of the secondary silencer structure. The output bend is disposed on the secondary silencer structure away from the input pipe. The primary silencer structure is provided with a first drain that extends through to the outside of the secondary silencer structure. The bottom of the secondary silencer structure is provided with a collection chamber. The side wall of the secondary silencer structure is provided with a second drain that cooperates with the collection chamber. The side wall of the primary silencer structure is provided with a through hole.

[0011] Preferably, the secondary noise reduction structure includes a first steel pipe and sound-absorbing cotton. The inner circumferential wall of the first steel pipe is provided with sound-absorbing cotton. The lower end of the first steel pipe is sealed to form the collection chamber. The two ends of the primary noise reduction structure pass through the side wall of the first steel pipe. The upper end of the first steel pipe is connected to the output bend.

[0012] Preferably, the output bend is connected to the upper end of the first steel pipe via a sealed bearing.

[0013] Preferably, the second drain device includes a second drain pipe and a second flange cover. The interior of the second drain pipe is connected to the collection chamber. The lower end of the second drain pipe is located at the lower end of the first steel pipe. The lower end of the second drain pipe is fitted with the second flange cover.

[0014] Preferably, the lower end of the first steel pipe is provided with a support leg, and the lower end of the second sewage pipe is above the lower end of the support leg.

[0015] Preferably, the primary silencing structure includes a second steel pipe with an open lower end and a sealed upper end. The side wall of the second steel pipe has several through holes. The lower end of the second steel pipe is connected to the inlet end of the first sewage discharger within the secondary silencing structure. The output end of the input pipe is fixedly connected to the side wall of the second steel pipe, and the interior of the input pipe is in communication with the interior of the second steel pipe.

[0016] Preferably, the first drain device includes a first drain pipe and a first flange cover. The bottom wall of the secondary sound-absorbing structure is penetrated between the two ends of the first drain pipe. The upper end of the first drain pipe is connected to the second steel pipe, and the lower end of the first drain pipe is fitted with the first flange cover.

[0017] This application has the following beneficial effects:

[0018] This application adopts a primary and secondary silencing structure in conjunction with an input pipe and an output bend to design a pipeline steam purging silencer. The two-stage silencing structure enables rapid attenuation of high-frequency steam flow impact noise. At the same time, impurities are collected through a collection chamber, and sewage is discharged through two drainers. This solves the problems of insufficient noise control, low debris collection efficiency, and difficult maintenance of current silencing equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this application;

[0020] Figure 2 This is a top view of this application.

[0021] Among them, 1. Input pipe; 2. Output bend pipe; 3. Collection bin; 4. First steel pipe; 5. Sound-absorbing cotton; 6. Second sewage pipe; 7. Second flange cover; 8. Support leg; 9. Second steel pipe; 10. Through hole; 11. First sewage pipe; 12. First flange cover. Detailed Implementation

[0022] like Figure 1-2 As shown, a pipeline steam purging silencer includes a hollow primary silencer structure, a hollow secondary silencer structure, an input pipe 1, and an output bend 2. The primary silencer structure is located inside the secondary silencer structure. The input end of the input pipe 1 is located outside the secondary silencer structure, and the output end of the input pipe 1 is inside the secondary silencer structure and communicates with the interior of the secondary silencer structure. The output bend 2 is provided on the secondary silencer structure away from the input pipe 1. The primary silencer structure is provided with a first drain that extends through to the outside of the secondary silencer structure. The bottom of the secondary silencer structure is provided with a collection chamber 3. The side wall of the secondary silencer structure is provided with a second drain that cooperates with the collection chamber 3. The side wall of the primary silencer structure is provided with a through hole 10.

[0023] In this embodiment, during use, the input end of the input pipe 1 is connected to the steam pipe outlet of the municipal pipeline through a flange to ensure sealing. During purging, the high-temperature steam flows through the input pipe 1 into the primary silencing structure, then through the through hole 10 into the secondary silencing structure, and finally out through the output bend 2. The noise is gradually attenuated. The debris located in the primary silencing structure (the debris blown out of the steam pipe during purging, such as particulate impurities in the steam flow, parts that have fallen off the inner wall of the steam pipe, etc.) is discharged to the outside of the secondary silencing structure through the first drain. The impurities that have been purged and entered the secondary silencing structure through the through hole 10 are discharged to the outside of the secondary silencing structure through the second drain.

[0024] As a preferred embodiment, the secondary noise reduction structure includes a first steel pipe 4 and sound-absorbing cotton 5. The inner circumferential wall of the first steel pipe 4 is lined with sound-absorbing cotton 5. The lower end of the first steel pipe 4 is sealed to form the collection chamber 3. The two ends of the primary noise reduction structure penetrate the side wall of the first steel pipe 4, and the upper end of the first steel pipe 4 connects to the output bend 2. With this configuration, noise is absorbed by the sound-absorbing cotton 5. The airflow entering the primary noise reduction structure is dispersed by the through holes 10, forming primary noise reduction. Then, it is absorbed by the sound-absorbing cotton 5, achieving secondary noise reduction, which can reduce the noise from 120dB to below 80dB. The first steel pipe 4 is made of D1020×10 steel pipe, and the secondary noise reduction structure is made of D219×8 seamless steel pipe. The secondary noise reduction structure is then welded inside the first steel pipe 4. D10 small holes are evenly distributed on the outer casing wall, and the inner wall of the first steel pipe 4 is filled with ceramic fiber sound-absorbing cotton. This design allows for quick replacement of the sound-absorbing cotton.

[0025] As a preferred embodiment, the output bend 2 is connected to the upper end of the first steel pipe 4 via a sealed bearing. This configuration allows the output bend 2 to rotate around the axis of the first steel pipe 4, enabling adjustments to the output steam flow according to the actual situation and preventing the steam flow from impacting nearby buildings and facilities. The output bend 2 uses a D530×10 steel elbow to guide the steam flow in a spiral motion, separating debris through centrifugal force.

[0026] In a preferred embodiment, the second drain device includes a second drain pipe 6 and a second flange cover 7. The interior of the second drain pipe 6 is connected to the collection chamber 3, and the lower end of the second drain pipe 6 is located at the lower end of the first steel pipe 4. The second flange cover 7 is fitted onto the lower end of the second drain pipe 6. In this way, impurities located in the collection chamber 3 can be discharged through the second drain pipe 6, and the second flange cover 7 can be opened periodically for drainage.

[0027] As a preferred embodiment, the lower end of the first steel pipe 4 is provided with a support leg 8, and the lower end of the second sewage pipe 6 is above the lower end of the support leg 8. Providing the support leg 8 prevents the lower end of the second sewage pipe 6 from touching the ground and also facilitates the installation of the entire device.

[0028] In a preferred embodiment, the primary silencing structure includes a second steel pipe 9, which is open at the lower end and sealed at the upper end. The side wall of the second steel pipe 9 has several through holes 10. The lower end of the second steel pipe 9 is connected to the inlet end of the first sewage discharger within the secondary silencing structure. The output end of the input pipe 1 is fixedly connected to the side wall of the second steel pipe 9, and the interior of the input pipe 1 communicates with the interior of the second steel pipe 9. With this configuration, the steam flow entering the second steel pipe 9 is dispersed by the through holes 10.

[0029] In a preferred embodiment, the first drain device includes a first drain pipe 11 and a first flange cover 12. The two ends of the first drain pipe 11 penetrate the bottom wall of the secondary sound-absorbing structure. The upper end of the first drain pipe 11 connects to the second steel pipe 9, and the lower end of the first drain pipe 11 is fitted with the first flange cover 12. With this configuration, impurities remaining in the first steel pipe 9 can be discharged by periodically opening the first flange cover 12. The first flange cover 12 is bolted in place, allowing for quick opening and closing.

[0030] As a preferred embodiment, the first drain pipe 11 and the second steel pipe 9 are integrally formed. This arrangement facilitates installation.

Claims

1. A pipeline vapor purge silencer characterized by, The device includes a hollow primary silencing structure, a hollow secondary silencing structure, an input pipe (1), and an output bend (2). The primary silencing structure is located inside the secondary silencing structure. The input end of the input pipe (1) is located outside the secondary silencing structure. The output end of the input pipe (1) is inside the secondary silencing structure and communicates with the interior of the secondary silencing structure. The output bend (2) is provided on the secondary silencing structure away from the input pipe (1). The primary silencing structure is provided with a first drain that extends through to the outside of the secondary silencing structure. The bottom of the secondary silencing structure is provided with a collection chamber (3). The side wall of the secondary silencing structure is provided with a second drain that cooperates with the collection chamber (3). The side wall of the primary silencing structure is provided with a through hole (10).

2. A pipeline vapor purge silencer according to claim 1 wherein, The secondary noise reduction structure includes a first steel pipe (4) and sound-absorbing cotton (5). The inner circumferential wall of the first steel pipe (4) is provided with sound-absorbing cotton (5). The lower end of the first steel pipe (4) is sealed to form the collection chamber (3). The two ends of the primary noise reduction structure pass through the side wall of the first steel pipe (4). The upper end of the first steel pipe (4) is connected to the output bend (2).

3. A pipeline vapor purge silencer according to claim 2 wherein, The output bend (2) is connected to the upper end of the first steel pipe (4) via a sealed bearing.

4. A pipeline vapor purge silencer according to claim 2 wherein, The second drain device includes a second drain pipe (6) and a second flange cover (7). The interior of the second drain pipe (6) is connected to the collection chamber (3). The lower end of the second drain pipe (6) is located at the lower end of the first steel pipe (4). The lower end of the second drain pipe (6) is fitted with the second flange cover (7).

5. A pipeline vapor purge silencer according to claim 4 wherein, The lower end of the first steel pipe (4) is provided with a support leg (8), and the lower end of the second sewage pipe (6) is above the lower end of the support leg (8).

6. A pipeline vapor purge silencer according to claim 1 wherein, The primary silencing structure includes a second steel pipe (9), which has an open lower end and a sealed upper end. The side wall of the second steel pipe (9) is provided with several through holes (10). The lower end of the second steel pipe (9) is connected to the inlet end of the first sewage discharger in the secondary silencing structure. The output end of the input pipe (1) is fixedly connected to the side wall of the second steel pipe (9). The interior of the input pipe (1) is connected to the interior of the second steel pipe (9).

7. A pipeline vapor purge silencer according to claim 6 wherein, The first drain device includes a first drain pipe (11) and a first flange cover (12). The bottom wall of the secondary sound-absorbing structure is penetrated between the two ends of the first drain pipe (11). The upper end of the first drain pipe (11) is connected to the second steel pipe (9). The lower end of the first drain pipe (11) is fitted with the first flange cover (12).

8. A pipeline vapor purge silencer according to claim 7 wherein, The first sewage pipe (11) and the second steel pipe (9) are integrally formed.

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