A gas dispenser muffler with installation misalignment compensation

Abstract

The utility model belongs to the field of silencer especially has the installation misplacement compensation's gasifier silencer, it includes the connecting pipeline, one end of connecting pipeline is equipped with the stainless steel bellows, another end fixed mounting of stainless steel bellows has the silencer main part, one end fixed mounting of silencer main part has the output pipeline. The utility model can pass through the wave node expansion or the bending of stainless steel bellows, flexible adaptation radial, angular offset, avoid the stress concentration problem of rigid connection, prevent the component damage, always guarantee the airflow passage unobstructed, ensure that the gasification operation is stably carried out, and adopt the compound noise reduction structure, the expansion chamber can reflect most of the middle and low frequency sound waves through the cross section mutation, the hole groove pipe of wrapping high temperature glass wool can absorb the middle and high frequency noise, realize the comprehensive weakening to the middle and high low frequency mixed noise of gasifier operation.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, and in particular to a gas dispenser silencer with installation misalignment compensation. Background Technology

[0002] The gas dispenser silencer is a specialized noise reduction device adapted to gas dispensers for compressed natural gas (CNG), liquefied natural gas (LNG), and other fuels. Its core function is to reduce the industrial noise generated by the high-speed airflow, valve opening and closing, and pressure fluctuations during the operation of the gas dispenser. Through specific acoustic structures (such as resistive expansion chambers, resistive sound-absorbing material layers, and impedance composite channels), it reflects, absorbs, interferes with, or dampens sound waves according to the laws of noise propagation, reducing the operating noise of the gas dispenser from 85-110 decibels to 60-70 decibels, which meets the "Emission Standard for Environmental Noise at the Boundary of Industrial Enterprises". At the same time, it must meet the requirements of gas equipment for sealing, high pressure resistance, and corrosion resistance to ensure gas dispensing safety and compliance with surrounding acoustic standards.

[0003] However, existing equipment mostly uses rigid connections. When the gas dispenser is working, the airflow pulsation causes the silencer to vibrate slightly, which in turn causes dynamic misalignment between the connecting pipe and the silencer body. Rigid connections cannot accommodate this misalignment, easily leading to stress concentration at the connection points. Over time, this can damage components or even block the airflow channel, interrupting gas dispensing operations. Furthermore, existing equipment often uses a single noise reduction structure, which cannot cover the full frequency range of noise generated by the gas dispenser during operation. This results in some frequency ranges of noise not being effectively controlled, making it difficult to meet the environmental noise emission standards at the plant boundary and causing interference to the surrounding acoustic environment.

[0004] Therefore, we propose a gas dispenser muffler with installation misalignment compensation to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gas dispenser muffler with installation misalignment compensation includes a connecting pipe, one end of which is provided with a stainless steel corrugated pipe, and the other end of which is fixedly installed with a muffler body; an output pipe is fixedly installed at one end of the muffler body.

[0007] Specifically, a first fixed flange is fixedly fitted on the end of the connecting pipe away from the stainless steel corrugated pipe, and an adjustable flange is fixedly fitted on the ends of the stainless steel corrugated pipe and the connecting pipe that are close to each other.

[0008] Specifically, the flange holes of both adjustable flanges are elliptical, which can compensate for radial static misalignment and reduce the reliance on stainless steel bellows for compensation.

[0009] Specifically, a stainless steel sleeve is fitted over the outer side of the stainless steel corrugated pipe, and there is a gap between the inner wall of the stainless steel sleeve and the stainless steel corrugated pipe to facilitate the protection of the stainless steel corrugated pipe.

[0010] Specifically, the muffler body has an expansion chamber inside, which can reflect most of the low and medium frequency sound waves through abrupt changes in cross-section.

[0011] Specifically, the muffler body has a perforated tube fixedly installed inside, which allows the high-temperature resistant glass wool to absorb and consume mid-to-high frequency noise when airflow occurs.

[0012] Specifically, the silencer body has a sound-absorbing chamber on its inner side, and the inside of the sound-absorbing chamber is filled with high-temperature resistant glass wool, which facilitates the reduction of mid-to-high frequency noise.

[0013] Specifically, a second fixed flange is fixedly fitted on the outside of the output pipe to facilitate the connection of the output pipe to the muffler body.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] This utility model discloses a gas dispenser muffler with installation misalignment compensation. It is connected by a stainless steel corrugated pipe. When the gas dispenser is working, the airflow pulsation causes the muffler to vibrate. When the connecting pipe and the main body of the muffler are dynamically misaligned, the stainless steel corrugated pipe can expand or bend through the corrugations to flexibly adapt to radial and angular misalignment, avoiding stress concentration problems of rigid connections, preventing component damage, ensuring unobstructed airflow, and ensuring stable gas dispensing operations. In addition, it adopts a composite noise reduction structure. The expansion chamber can reflect most of the low and medium frequency sound waves through cross-sectional abrupt changes, and the perforated tube wrapped with high-temperature resistant glass wool can absorb mid and high frequency noise, thus achieving comprehensive reduction of the mixed mid, high and low frequency noise generated during the operation of the gas dispenser. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a gas dispenser muffler with installation misalignment compensation proposed in this utility model;

[0017] Figure 2 This is a three-dimensional cross-sectional view of a gas dispenser muffler with installation misalignment compensation proposed in this utility model;

[0018] Figure 3 This is a three-dimensional cross-sectional view of the connecting pipe and the output pipe of a gas dispenser muffler with installation misalignment compensation proposed in this utility model.

[0019] Figure 4This utility model presents a three-dimensional structural diagram of a connecting pipe, adjustable flange, stainless steel corrugated pipe, and stainless steel pipe sleeve for a gas dispenser silencer with installation misalignment compensation.

[0020] Figure 5 This is a three-dimensional cross-sectional view of the muffler body, perforated tube, and high-temperature resistant glass wool of a gas dispenser muffler with installation misalignment compensation proposed in this utility model.

[0021] In the diagram: 1. Connecting pipe; 2. First fixed flange; 3. Adjustable flange; 4. Stainless steel corrugated pipe; 5. Stainless steel pipe sleeve; 6. Silencer body; 7. Expansion chamber; 8. Grooved pipe; 9. High-temperature resistant glass wool; 10. Sound-absorbing chamber; 11. Output pipe; 12. Second fixed flange. Detailed Implementation

[0022] Reference Figure 1-5 A gas dispenser muffler with installation misalignment compensation includes a connecting pipe 1, one end of which is provided with a stainless steel corrugated pipe 4, and the other end of the stainless steel corrugated pipe 4 is fixedly installed with a muffler body 6; one end of the muffler body 6 is fixedly installed with an output pipe 11.

[0023] In this embodiment, a first fixed flange 2 is fixedly fitted on the end of the connecting pipe 1 away from the stainless steel corrugated pipe 4, and an adjustable flange 3 is fixedly fitted on the ends of the stainless steel corrugated pipe 4 and the connecting pipe 1 that are close to each other.

[0024] In this embodiment, the flange holes of the two adjustable flanges 3 are both elliptical, which can compensate for radial static misalignment and reduce the reliance on the stainless steel bellows 4 for compensation.

[0025] In this embodiment, a stainless steel sleeve 5 is fitted on the outer side of the stainless steel corrugated pipe 4, and there is a gap between the inner wall of the stainless steel sleeve 5 and the stainless steel corrugated pipe 4, which facilitates the protection of the stainless steel corrugated pipe 4.

[0026] In this embodiment, the muffler body 6 has an expansion chamber 7 inside, which can reflect most of the low and medium frequency sound waves through abrupt changes in cross-section.

[0027] In this embodiment, a perforated tube 8 is fixedly installed inside the muffler body 6 to facilitate the absorption and consumption of mid-to-high frequency noise by the high-temperature resistant glass wool 9 when the airflow is flowing.

[0028] In this embodiment, a sound-absorbing chamber 10 is provided on the inner side of the muffler body 6. The sound-absorbing chamber 10 is filled with high-temperature resistant glass wool 9, which facilitates the reduction of mid-to-high frequency noise.

[0029] In this embodiment, a second fixed flange 12 is fixedly sleeved on the outside of the output pipe 11 to facilitate the connection of the output pipe 11 to the muffler body 6.

[0030] Working principle: During gas dispensing, the operator bolts the first fixed flange 2 on the connecting pipe 1 to the flange at the gas nozzle. After connection, the second fixed flange 12 on the outside of the output pipe 11 is bolted to the flange at the gas tank inlet. A silencer body 6 is fixedly installed at the other end of the output pipe 11, and a stainless steel bellows 4 is fixedly installed at the other end of the silencer body 6. The stainless steel bellows 4 and the connecting pipe 1 are connected by an adjustable flange 3. During installation, the adjustable flange 3 does not require significant movement of the silencer body 6; alignment is quickly achieved by adjusting the position of the bolts within the elliptical holes, thus compensating for radial static misalignment and reducing reliance on the stainless steel bellows 4 for compensation. When the gas dispenser is working, the airflow... The pulsation causes the silencer to vibrate slightly, which in turn causes the connecting pipe 1 and the silencer body 6 to shift dynamically. At this time, the stainless steel bellows 4 can respond quickly by the expansion or contraction of the corrugations (when the radial shift occurs, the corrugations are stretched or compressed laterally to absorb the displacement; when the angular shift occurs, one side of the corrugations is compressed and the other side is stretched to achieve angle adaptation), thereby avoiding stress concentration caused by rigid connection and ensuring that the airflow channel is always unobstructed. When the gas flows, the airflow first enters the expansion chamber 7, and most of the mid-to-low frequency sound waves are reflected by the abrupt change in cross section. Then, the airflow continues to propagate forward after passing through the resistant silencer. Through the perforated tube 8 wrapped with high-temperature resistant glass wool 9, the mid-to-high frequency noise is absorbed and consumed by the high-temperature resistant glass wool 9, thereby weakening the mid-to-high frequency noise. After the silencer is completed, it enters the gas tank through the output pipe 11 to complete the gas filling.

[0031] The technological advancements of this invention compared to existing technologies are as follows: the expansion, contraction, or bending of the stainless steel corrugated pipe 4 allows for flexible adaptation to radial and angular offsets, avoiding stress concentration issues associated with rigid connections, preventing component damage, ensuring unobstructed airflow channels, and guaranteeing stable gas dispensing operations. Furthermore, the composite noise reduction structure allows the expansion chamber 7 to reflect most mid-to-low frequency sound waves through abrupt changes in cross-section, while the perforated tube 8 wrapped with high-temperature resistant glass wool 9 absorbs mid-to-high frequency noise, thus comprehensively reducing the mixed mid-to-high frequency noise generated during gas dispenser operation.

Claims

1. A gas dispenser muffler with installation misalignment compensation, characterized in that, It includes a connecting pipe (1), one end of which is provided with a stainless steel corrugated pipe (4), and the other end of which is fixedly installed with a silencer body (6). An output pipe (11) is fixedly installed at one end of the muffler body (6). The first fixed flange (2) is fixedly fitted on the end of the connecting pipe (1) away from the stainless steel corrugated pipe (4). Adjustable flanges (3) are fixedly fitted on the ends of the stainless steel corrugated pipe (4) and the connecting pipe (1) that are close to each other. The flange holes of the two adjustable flanges (3) are elliptical. The stainless steel corrugated pipe (4) is fitted with a stainless steel sleeve (5) on its outer side. There is a gap between the inner wall of the stainless steel sleeve (5) and the stainless steel corrugated pipe (4). An expansion chamber (7) is opened inside the muffler body (6). A perforated tube (8) is fixedly installed inside the muffler body (6). A sound-absorbing chamber (10) is opened on the inner side of the muffler body (6). The sound-absorbing chamber (10) is filled with high-temperature resistant glass wool (9).

2. A gas dispenser muffler with installation misalignment compensation according to claim 1, characterized in that, The outer side of the output pipe (11) is fixedly fitted with a second fixed flange (12).

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