A Noise Reduction Method, Device and Storage Medium for a Gas Pressure Regulating Device

Abstract

The present invention relates to the technical field of gas equipment, and particularly to a noise reduction method, device and storage medium for a gas pressure regulating device, which includes the following steps: collecting noise data at a first collection point to obtain a first sound source signal; performing real-time processing and analysis on the first sound source signal, first filtering it to remove high-frequency clutter to obtain a second sound source signal, and then analyzing the characteristics of the second sound source signal to obtain a second amplitude and a second phase; actively emitting a third sound source signal at the sound generation point, the third sound source signal includes a third amplitude and a third phase, the third amplitude is the same as the second amplitude, and the third phase is opposite to the second phase. Among them, the first collection point is located inside the outlet pipe of the gas pressure regulating device, and the sound generation point is located outside the outlet pipe of the gas pressure regulating device. In the present invention, noise can be actively eliminated to achieve the effect of active noise reduction, effectively reducing the medium and low-frequency noise components of the gas pressure regulating device and reducing sound pollution.

Description

Technical Field

[0001] The present invention relates to the technical field of gas equipment, and particularly to a noise reduction method, device and storage medium for a gas pressure regulating device. Background Art

[0002] The gas pressure regulating device plays a role of reducing high-pressure gas to low-pressure gas in the gas transmission and distribution process, and its function is similar to that of a power transformer. However, during the air flow pressure reduction process, due to the rapid change of the air flow, intense impact on the inner wall of the pressure regulating device will occur inside the pressure regulating device, generating low-frequency noise. This noise is likely to cause discomfort to people and will cause the noise during the operation of the pressure regulating device to exceed the national environmental protection standards, leading to complaints from residential users.

[0003] With the development of users, the consumption of natural gas gradually increases, and the high-load operation faced by the pressure regulating device becomes more and more frequent. The noise problem of the pressure regulating device is becoming increasingly prominent. Therefore, how to effectively solve this problem has become an urgent need for current gas enterprises.

[0004] The information disclosed in this background art section is only intended to deepen the understanding of the overall background art of the present invention, and should not be regarded as an admission or any form of implication that this information constitutes the prior art known to those skilled in the art. Summary of the Invention

[0005] The present invention provides a noise reduction method, device and storage medium for a gas pressure regulating device, thereby effectively solving the problems in the background art.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: a noise reduction method for a gas pressure regulating device, including the following steps:

[0007] Collect noise data at a first collection point to obtain a first sound source signal;

[0008] Perform real-time processing and analysis on the first sound source signal. First, filter it to remove high-frequency clutter to obtain a second sound source signal, and then analyze the characteristics of the second sound source signal to obtain a second amplitude and a second phase;

[0009] Actively emit a third sound source signal at the sound generation point. The third sound source signal includes a third amplitude and a third phase. The third amplitude is the same as the second amplitude, and the third phase is opposite to the second phase.

[0010] Further, the first collection point is located inside the outlet pipe of the gas pressure regulating device, and the sound generation point is located outside the outlet pipe of the gas pressure regulating device.

[0011] Further, noise data is collected at the second collection point to obtain a fourth sound source signal. The second collection point is located outside the outlet pipe of the gas pressure regulating device. The characteristics of the fourth sound source signal are analyzed in real time to obtain a fourth amplitude and a fourth phase.

[0012] A compensation waveform is generated. The amplitude of the compensation waveform is the same as the fourth amplitude, and the phase of the compensation waveform is opposite to the fourth phase. The compensation waveform is superimposed on the third sound source signal.

[0013] Further, a flared section is provided on the outlet pipe. The flared section is along the direction of gas movement, and its cross-section gradually increases. The first collection point is located near the flared section and at the rear end of the flared section along the gas movement, and the sound generation point is located far from the flared section.

[0014] Further, the actively emitting the third sound source signal at the sound generation point includes:

[0015] A vibration source is attached to the outer wall of the outlet pipe, and the vibration source emits vibrations.

[0016] The vibration source drives the outer wall of the outlet pipe to vibrate, and the outlet pipe is used as a sound cavity to emit the third sound source signal.

[0017] The present invention further includes a noise reduction device for a gas pressure regulating device, including:

[0018] A first sensor, which is arranged inside the outlet pipe to collect noise data.

[0019] A filter, which is arranged outside the outlet pipe and is communicatively connected to the first sensor, filters the first sound source signal collected by the first sensor, and obtains a second sound source signal.

[0020] A processor, which is arranged outside the outlet pipe and is communicatively connected to the filter. The processor processes the second sound source signal and analyzes its characteristics.

[0021] A sound generating device, and the processor controls the sound generating device to emit a third sound source signal.

[0022] A memory and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method as described above is implemented.

[0023] Further, a second sensor is also arranged outside the outlet pipe. The second sensor is communicatively connected to the processor and collects noise data outside the outlet pipe to obtain a fourth sound source signal. The processor analyzes the fourth sound source signal, generates a compensation waveform, and superimposes the compensation waveform on the third sound source signal.

[0024] Further, a flared section is provided on the air outlet pipe. The cross-section of the flared section gradually increases along the direction of gas movement. The first sensor is located at the rear end of the flared section along the direction of gas movement, and the sound generating device is arranged outside the air outlet pipe and at one end far from the flared section.

[0025] Further, the sound generating device is a resonance device and includes a resonance surface. The resonance surface is attached to the outer wall of the air outlet pipe, and the resonance surface drives the air outlet pipe to vibrate and generate sound.

[0026] The present invention also includes a storage medium, on which a computer program is stored. When the computer program is executed by a processor, the method as described above is implemented.

[0027] The beneficial effects of the present invention are as follows: By collecting noise data and then performing real-time processing and analysis, since when the gas pressure regulating equipment operates, its noise is mainly generated when the gas violently impacts the inner wall of the air outlet pipe after passing through the pressure regulating valve, resulting in low-frequency noise. Therefore, the low and medium-frequency noise has a certain regularity in the short term, while the high-frequency noise is less and does not have regularity in the short term, making it difficult to eliminate the high-frequency noise. So, the high-frequency clutter is filtered out, and then the waveforms of the low and medium frequencies of the noise in the short term are analyzed to obtain the amplitude and phase at each main frequency, thereby obtaining the characteristics of the low and medium-frequency noise. At this time, a noise reduction waveform is actively emitted. The amplitude of the noise reduction waveform is the same as that of the low and medium-frequency noise, and the phase is opposite, so that the noise can be actively eliminated, achieving the effect of active noise reduction, effectively reducing the low and medium-frequency noise components of the gas pressure regulating equipment and reducing the noise pollution. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 is a flowchart of the method in the present invention;

[0030] Figure 2 is a schematic structural diagram of the noise reduction device in the present invention;

[0031] Figure 3 is a schematic diagram of the storage medium. Detailed Embodiments

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0033] As Figure 1 shown: A noise reduction method for a gas pressure regulating device includes the following steps:

[0034] Collect noise data at the first collection point to obtain the first sound source signal;

[0035] Perform real-time processing and analysis on the first sound source signal. First, filter it to remove high-frequency clutter to obtain the second sound source signal, and then analyze the characteristics of the second sound source signal to obtain the second amplitude and the second phase;

[0036] Actively emit a third sound source signal at the sound generation point. The third sound source signal includes a third amplitude and a third phase. The third amplitude is the same as the second amplitude, and the third phase is opposite to the second phase.

[0037] Among them, the first collection point is located inside the outlet pipe of the gas pressure regulating device, and the sound generation point is located outside the outlet pipe of the gas pressure regulating device.

[0038] By collecting noise data and then performing real-time processing and analysis, since when the gas pressure regulating device operates, its noise is mainly caused by the gas hitting the inner wall of the outlet pipe violently after passing through the pressure regulating valve, thus generating low-frequency noise. Therefore, the medium and low-frequency noise has a certain regularity in the short term, while the high-frequency noise is less and does not have regularity in the short term, making it difficult to eliminate the high-frequency noise. So, filter out the high-frequency clutter among them, and then analyze the medium and low-frequency waveforms of the noise in the short term to obtain the amplitude and phase at each main frequency, thereby obtaining the characteristics of the medium and low-frequency noise. At this time, actively emit a noise reduction waveform. The amplitude of the noise reduction waveform is the same as the amplitude of the medium and low-frequency noise, and the phase is opposite, so that the noise can be actively eliminated, achieving the effect of active noise reduction, effectively reducing the medium and low-frequency noise components of the gas pressure regulating device and reducing the noise pollution.

[0039] By setting the first collection point inside the outlet pipe, the quality of the collected noise can be improved. In this embodiment, collect noise data at the second collection point to obtain the fourth sound source signal. The second collection point is located outside the outlet pipe of the gas pressure regulating device, and analyze the characteristics of the fourth sound source signal in real time to obtain the fourth amplitude and the fourth phase;

[0040] Generate a compensation waveform. The amplitude of the compensation waveform is the same as the fourth amplitude, and the phase of the compensation waveform is opposite to the fourth phase. Superimpose the compensation waveform onto the third sound source signal.

[0041] Since the environment in the gas outlet pipe is a gas environment, it is not convenient to set the sound generating device inside the gas outlet pipe. As a result, there will be a certain error between the waveform of active noise reduction and the noise waveform. Therefore, after active noise reduction, the residual noise is collected to generate a compensation waveform, and the waveform of noise reduction is corrected and compensated in real time to further reduce the noise.

[0042] A flared section is provided on the gas outlet pipe. Along the direction of gas movement, the cross-section of the flared section gradually increases. The first acquisition point is located near the flared section and at the rear end of the flared section along the gas movement direction, and the sound generating point is located far from the flared section.

[0043] By providing a flared section on the gas outlet pipe, when the gas passes through the flared section, due to the gradually increasing cross-section of the flared section, it is beneficial to reduce its impact on the inner wall of the gas outlet pipe, thereby promoting the better conversion of low-frequency narrow-band characteristics and medium-high frequency broadband characteristics of noise into plane waves, reducing clutter. Then, the first acquisition point is set behind the flared section. At this time, the collected noise waveform signal is more stable with less distortion, improving the effect of active noise reduction.

[0044] Due to the gas environment inside the gas outlet pipe, it is not convenient to set the sound generating device inside the gas outlet pipe. If only an ordinary loudspeaker is set outside the gas outlet pipe, there will be a large difference in sound quality between the third sound source signal and the second sound source signal, affecting the noise reduction effect. Therefore, a vibration source is attached to the outer wall of the gas outlet pipe, and the vibration source emits vibrations; the vibration source drives the outer wall of the gas outlet pipe to vibrate, using the gas outlet pipe as a sound cavity to emit the third sound source signal. By attaching a vibration source to the outer wall of the gas outlet pipe and driving the gas outlet pipe to vibrate, using the gas outlet pipe as a sound cavity, the sound quality emitted will be similar to the sound quality of the noise generated when the gas impacts the inner wall of the gas outlet pipe inside, so as to better eliminate the noise. Moreover, when the gas outlet pipe is used as a sound cavity, the sound is more obvious inside the gas outlet pipe and will directly cancel out the noise inside the gas outlet pipe, improving the noise reduction effect.

[0045] Such as Figure 2 shown, the noise reduction device of a gas pressure regulating device is further included in this embodiment. Figure 2 In the figure, the arrow direction is the gas movement direction. The noise reduction device 2 includes:

[0046] A first sensor 21, which is arranged inside the gas outlet pipe 1 to collect noise data;

[0047] A filter 22, which is arranged outside the gas outlet pipe 1 and is communicatively connected with the first sensor 21 to filter the first sound source signal collected by the first sensor 21 and obtain a second sound source signal;

[0048] A processor 23, which is arranged outside the gas outlet pipe 1 and is communicatively connected with the filter 22. The processor 23 processes the second sound source signal and analyzes its characteristics;

[0049] The sound generating device 24, and the processor 23 controls the sound generating device 24 to emit a third sound source signal;

[0050] A memory and a computer program stored on the memory and executable on the processor 23. When the processor 23 executes the computer program, the above-mentioned method is implemented.

[0051] By collecting noise data and then performing real-time processing and analysis. Since when the gas pressure regulating equipment is operating, its noise is mainly caused by the gas hitting the inner wall of the outlet pipe 1 violently after passing through the pressure regulating valve, thus generating low-frequency noise. Therefore, the low and medium frequency noise has a certain regularity in the short term, while the high-frequency noise is less and does not have regularity in the short term, making it difficult to eliminate the high-frequency noise. So, filter out the high-frequency clutter therein, and then analyze the waveforms of the low and medium frequencies of the noise in the short term to obtain the amplitudes and phases at each main frequency, thereby obtaining the characteristics of the low and medium frequency noise. At this time, actively emit a noise reduction waveform, the amplitude of the noise reduction waveform is the same as that of the low and medium frequency noise, and the phase is opposite, so that the noise can be actively eliminated, achieving the effect of active noise reduction, effectively reducing the low and medium frequency noise components of the gas pressure regulating equipment and reducing the sound pollution.

[0052] In this embodiment, a second sensor 25 is further provided outside the outlet pipe 1. The second sensor 25 is communicatively connected to the processor 23 and collects noise data outside the outlet pipe 1 to obtain a fourth sound source signal. The processor 23 analyzes the fourth sound source signal to generate a compensation waveform and superimposes the compensation waveform into the third sound source signal.

[0053] Since the environment in the outlet pipe 1 is a gas environment and it is not convenient to arrange the sound generating device 24 inside the outlet pipe 1, there will be a certain error between the actively noise-reducing waveform and the noise waveform. Therefore, after active noise reduction, collect the residual noise to generate a compensation waveform and correct and compensate the noise reduction waveform in real time to further reduce the noise.

[0054] Wherein, a flared section 11 is provided on the outlet pipe 1. The cross-section of the flared section 11 gradually increases along the gas movement direction. The first sensor 21 is located at the rear end of the flared section 11 along the gas movement direction. The sound generating device 24 is arranged outside the outlet pipe 1 and at one end far from the flared section 11.

[0055] By providing a flared section 11 on the outlet pipe 1, when the gas passes through the flared section 11, since the cross-section of the flared section 11 gradually increases, it is beneficial to reduce its impact on the inner wall of the outlet pipe 1, thereby promoting the better conversion of the noise with low-frequency narrowband characteristics and medium and high-frequency broadband characteristics into plane waves, reducing clutter. Then, set the first sensor 21 behind the flared section 11. At this time, the collected noise waveform signal is more stable and has less distortion, improving the effect of active noise reduction.

[0056] Preferably, in the above embodiment, the sound generating device 24 is a resonance device and includes a resonance surface that fits against the outer wall of the air outlet pipe 1, and the resonance surface drives the air outlet pipe 1 to vibrate and generate sound.

[0057] Due to the gas environment inside the air outlet pipe 1, it is not convenient to arrange the sound generating device 24 inside the air outlet pipe 1. If only a common loudspeaker is arranged outside the air outlet pipe 1, there will be a large difference in sound quality between the third sound source signal and the second sound source signal, which will affect the noise reduction effect. Therefore, a vibration source is attached to the outer wall of the air outlet pipe 1, and the vibration source emits vibrations; the vibration source drives the outer wall of the air outlet pipe 1 to vibrate, and the air outlet pipe 1 is used as a sound cavity to emit the third sound source signal. By attaching a vibration source to the outer wall of the air outlet pipe 1 and driving the air outlet pipe 1 to vibrate, and using the air outlet pipe 1 as a sound cavity, the generated sound quality will be similar to the sound quality of the noise generated when the gas impacts the inner wall of the air outlet pipe 1 inside the air outlet pipe 1, so as to better eliminate the noise. Moreover, when the air outlet pipe 1 is used as a sound cavity, the sound is more obvious inside the air outlet pipe 1 and will directly cancel out the noise inside the air outlet pipe 1, improving the noise reduction effect.

[0058] As Figure 3 shown, an embodiment of the present application further provides a storage medium, on which a computer program is stored, and when the computer program is run by a processor, it executes the above method.

[0059] Among them, the storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (abbreviated as SRAM), electrically erasable programmable read-only memory (abbreviated as EEPROM), erasable programmable read-only memory (abbreviated as EPROM), programmable read-only memory (abbreviated as PROM), read-only memory (abbreviated as ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0060] In the description of the present invention, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0061] In the present invention, unless otherwise clearly defined or limited, terms such as "installed", "connected", "linked", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0063] Any process or method description shown in the flowchart or described in other ways herein can be understood as representing a module, segment, or part of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present invention includes additional implementations, where the functions can be executed in a substantially simultaneous manner or in the reverse order according to the functions involved, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present invention pertain.

[0064] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a definitional sequence list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, apparatus, or device (such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device), or used in conjunction with these instruction execution systems, apparatus, or devices. For the purposes of this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport a program for use by or in conjunction with an instruction execution system, apparatus, or device. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection portion having one or more wirings (electronic device), a portable computer diskette case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable media on which the program can be printed, because the program can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpretation, or otherwise processing as appropriate, and then stored in a computer memory.

[0065] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or a combination of the following techniques well-known in the art can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application-specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), and the like.

[0066] Those of ordinary skill in the art of this technology can understand that all or part of the steps carried by the method of implementing the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiments.

[0067] The above-mentioned storage medium can be a read-only memory, a disk, or an optical disc, etc. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A noise reduction method for a gas pressure regulating device, characterized in that, It includes the following steps: Collect noise data at the first collection point to obtain a first sound source signal; Perform real-time processing and analysis on the first sound source signal. First, filter it to remove high-frequency clutter to obtain a second sound source signal, and then analyze the characteristics of the second sound source signal to obtain a second amplitude and a second phase; Actively emit a third sound source signal at the sound generation point. The third sound source signal includes a third amplitude and a third phase. The third amplitude is the same as the second amplitude, and the third phase is opposite to the second phase; The first collection point is located inside the outlet pipe of the gas pressure regulating device, and the sound generation point is located outside the outlet pipe of the gas pressure regulating device; Collect noise data at the second collection point to obtain a fourth sound source signal. The second collection point is located outside the outlet pipe of the gas pressure regulating device, and analyze the characteristics of the fourth sound source signal in real time to obtain a fourth amplitude and a fourth phase; Generate a compensation waveform. The amplitude of the compensation waveform is the same as the fourth amplitude, and the phase of the compensation waveform is opposite to the fourth phase. Superimpose the compensation waveform on the third sound source signal; The actively emitting the third sound source signal at the sound generation point includes: Attach a vibration source to the outer wall of the outlet pipe, and the vibration source emits vibrations; The vibration source drives the outer wall of the outlet pipe to vibrate, using the outlet pipe as a sound cavity to emit the third sound source signal; Provide a flared section on the outlet pipe. The flared section is along the gas movement direction, and its cross-section gradually increases. The first collection point is located near the flared section and at the rear end of the flared section along the gas movement, and the sound generation point is located far from the flared section.

2. A noise reduction device for a gas pressure regulating device, characterized in that, It includes: A first sensor, which is arranged inside the outlet pipe to collect noise data; A filter, which is arranged outside the outlet pipe and is communicatively connected to the first sensor, filters the first sound source signal collected by the first sensor, and obtains a second sound source signal; A processor, which is arranged outside the outlet pipe and is communicatively connected to the filter. The processor processes the second sound source signal and analyzes its characteristics; A sound generating device, and the processor controls the sound generating device to emit a third sound source signal; A memory and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method as claimed in claim 1 is implemented.

3. The noise reduction device of the gas pressure regulating equipment according to claim 2, characterized in that, A second sensor is further arranged outside the outlet pipe. The second sensor is communicatively connected to the processor, collects noise data outside the outlet pipe to obtain a fourth sound source signal, and the processor analyzes the fourth sound source signal, generates a compensation waveform, and superimposes the compensation waveform on the third sound source signal.

4. The noise reduction device for the gas pressure regulating equipment according to claim 3, characterized in that, Provide a flared section on the outlet pipe. The flared section is along the gas movement direction and its cross-section gradually increases. The first sensor is located at the rear end of the flared section along the gas movement direction, and the sound generating device is arranged outside the outlet pipe and at one end far from the flared section.

5. The noise reduction device of the gas pressure regulating equipment according to claim 2, characterized in that, The sound generating device is a resonance device and includes a resonance surface. The resonance surface is attached to the outer wall of the outlet pipe, and the resonance surface drives the outlet pipe to vibrate and generate sound.

6. A storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the method as described in claim 1.

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