Gas engine sound acquisition device

Abstract

The utility model relates to the technical field of gas engine accessories, and discloses a gas engine sound collection device which comprises an auscultation head fixing shell, a sound transmission guide pipe, a sound conversion module sleeve shell and a sound conversion module. An auscultation head mounting groove is formed in the auscultation head fixing shell, an auscultation head is sleeved with the auscultation head mounting groove, a magnet mounting groove is formed in the periphery of the auscultation head mounting groove along the inner wall of the auscultation head fixing shell, a magnet is sleeved with the magnet mounting groove, and the remaining gap in the auscultation head fixing shell is filled with sound insulation cotton. A sound conversion module sleeve shell is arranged at one end of the stethoscope head fixing shell, a sound conversion module is sleeved with the sound conversion module sleeve shell, the stethoscope head is connected with the sound conversion module through a sound transmission guide pipe, and the sound transmission guide pipe is wrapped with a layer of sound insulation cotton. The gas engine sound collection device can shield sound interference outside an engine body and can be installed at a detection point to continuously collect engine operation sound.

Description

Technical Field

[0001] The utility model relates to the technical field of gas engine accessories, in particular to a sound acquisition device for a gas engine. Background Technique

[0002] Gas generator sets are favored by the market for their advantages such as high efficiency, low emissions, and low maintenance costs. To ensure the safe operation of gas engines, it is particularly crucial to detect engine faults. Some gas engine faults are difficult to detect through traditional sensors, but they can often be reflected by sounds. The commonly used engine sound detection equipment on the market currently is an engine fault stethoscope, which requires operators to hold the equipment and press the probe against the detection point, and then manually listen and judge through headphones.

[0003] The previous gas engine sound acquisition devices have the following disadvantages: 1. They cannot shield the sound interference outside the engine body and cannot be installed at the detection point to continuously collect the running sound of the engine. Therefore, those skilled in the art provide a gas engine sound acquisition device to solve the problems raised in the above background technique. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a gas engine sound acquisition device to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A gas engine sound acquisition device includes a stethoscope head fixing shell, a sound transmission conduit, a sound conversion module housing, and a sound conversion module;

[0007] A stethoscope head installation groove is arranged in the stethoscope head fixing shell, and a stethoscope head is sleeved in the stethoscope head installation groove. A magnet installation groove is arranged along the inner wall of the stethoscope head fixing shell outside the stethoscope head installation groove, and a magnet is sleeved in the magnet installation groove. The remaining voids inside the stethoscope head fixing shell are all filled with sound insulation cotton. One end of the stethoscope head fixing shell is provided with a sound conversion module housing, and a sound conversion module is sleeved in the sound conversion module housing. The stethoscope head is connected to the sound conversion module through a sound transmission conduit, and a layer of sound insulation cotton is wrapped outside the sound transmission conduit. Inside the sound conversion module, the sound transmission conduit and the microphone are closely installed head-to-head through a fixing bracket. The tail of the sound transmission conduit is in a horn shape, and the microphone is located inside the horn mouth.

[0008] As a further scheme of the utility model: A sealing cover is installed on one side of the sound conversion module housing through screws, and an L-shaped mounting plate is welded at the back corner of the sound conversion module housing. The sealing cover seals the sound conversion module housing, and the L-shaped mounting plate facilitates the installation and fixation of the sound conversion module housing through a matching bolt.

[0009] As a further solution of the present utility model: a stethoscope diaphragm is adhesively bonded to the bottom of the stethoscope head fixing shell, and the material of the stethoscope diaphragm is titanium metal with less attenuation of sound wave transmission.

[0010] As a further solution of the present utility model: the sound transmission catheter is a traditional sound transmission catheter for medical stethoscopes, and the material is PVC.

[0011] As a further solution of the present utility model: the housing and the sealing cover of the sound conversion module are made of sound insulation board materials.

[0012] As a further solution of the present utility model: the magnet is a neodymium magnet, the stethoscope head fixing shell is of a rectangular structure, and the magnet is a neodymium magnet with strong magnetism, which is convenient to tightly adsorb and fix the stethoscope head fixing shell.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. A layer of sound insulation cotton is wrapped outside the sound transmission catheter to prevent external sounds from interfering with the collected sound signals during the transmission process. Inside the sound conversion module, the sound transmission catheter and the microphone are installed adjacent to each other head-to-head through a fixing bracket. The tail of the sound transmission catheter is in a horn shape, and the microphone is located inside the horn mouth. This method is more conducive to the microphone to collect sound signals. The housing and the sealing cover of the sound conversion module are made of sound insulation board, which effectively eliminates the interference of external noise when the microphone receives sound.

[0015] 2. Finally, the microphone converts the collected sound signals excluding external interference into electrical signals for further analysis and judgment by technicians or computer software. The gas engine sound collection device can shield the external sound interference of the engine body and can be installed at the detection point to continuously collect the running sound of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of a gas engine sound collection device of the present utility model.

[0017] Figure 2 It is a schematic diagram of the internal structure of the housing of the sound conversion module of a gas engine sound collection device of the present utility model.

[0018] Figure 3 It is a schematic diagram of the internal structure of the stethoscope head fixing shell of a gas engine sound collection device of the present utility model.

[0019] Figure 4 It is a schematic diagram of the outer wrapping layer structure of the sound transmission catheter of a gas engine sound collection device of the present utility model.

[0020] Figure 5Schematic diagram of the microphone structure of a sound collection device for a gas engine of the present utility model.

[0021] In the figure: 1, stethoscope head; 2, stethoscope head fixing shell; 3, magnet; 4, sound transmission catheter; 5, sound conversion module; 6, microphone; 7, sealing cover; 8, sound conversion module housing; 9, L-shaped mounting plate; 10, sound insulation cotton; 11, stethoscope head mounting groove; 12, magnet mounting groove; 13, stethoscope membrane. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5 , in the embodiments of the present utility model, a sound collection device for a gas engine includes a stethoscope head fixing shell 2, a sound transmission catheter 4, a sound conversion module housing 8 and a sound conversion module 5;

[0024] A stethoscope head mounting groove 11 is provided in the stethoscope head fixing shell 2, and a stethoscope head 1 is sleeved in the stethoscope head mounting groove 11. A magnet mounting groove 12 is provided on the periphery of the stethoscope head mounting groove 11 and along the inner wall of the stethoscope head fixing shell 2, and a magnet 3 is sleeved in the magnet mounting groove 12. The remaining gaps inside the stethoscope head fixing shell 2 are all filled with sound insulation cotton 10. One end of the stethoscope head fixing shell 2 is provided with a sound conversion module housing 8, and a sound conversion module 5 is sleeved in the sound conversion module housing 8. The stethoscope head 1 is connected to the sound conversion module 5 through a sound transmission catheter 4. The outside of the sound transmission catheter 4 is wrapped with a layer of sound insulation cotton 10. Inside the sound conversion module 5, the sound transmission catheter 4 and the microphone 6 are closely installed head-to-head through a fixing bracket. The tail of the sound transmission catheter 4 is trumpet-shaped and the microphone 6 is located inside the trumpet mouth.

[0025] Among them, one side of the sound conversion module housing 8 is installed with a sealing cover 7 by screws, and an L-shaped mounting plate 9 is welded at the back corner of the sound conversion module housing 8; the sealing cover 7 seals the sound conversion module housing 8, and the L-shaped mounting plate 9 is convenient for installing and fixing the sound conversion module housing 8 through a matching bolt.

[0026] Among them, a stethoscope membrane 13 is bonded to the bottom of the stethoscope head fixing shell 2, and the material of the stethoscope membrane 13 is titanium metal with less attenuation of sound wave transmission; the stethoscope membrane 13 made of titanium metal avoids the attenuation of sound wave transmission and improves the sound collection efficiency.

[0027] Among them, the sound-conducting catheter 4 is a traditional sound-conducting catheter for medical stethoscopes, and the material is PVC; the sound signal collected by the stethoscope head 1 is transmitted into the sound conversion module 5 through the sound-conducting catheter 4.

[0028] Among them, the housing 8 of the sound conversion module and the sealing cover 7 are made of sound insulation board materials; in this way, the interference of external noise during the sound collection of the microphone 6 is well eliminated.

[0029] Among them, the magnet 3 is a neodymium magnet, and the stethoscope head fixing shell 2 is of a rectangular structure; the magnet 3 is a neodymium magnet with strong magnetism, which is convenient for tightly adsorbing and fixing the stethoscope head fixing shell 2.

[0030] The working principle of the present utility model is as follows: when collecting the sound of a certain part of a gas engine, the stethoscope head 1 installed on the stethoscope head fixing shell 2 is placed on the detection part, and the stethoscope head 1 is tightly adsorbed on the detection position through the magnet 3. The sound signal collected by the stethoscope head 1 is transmitted into the sound conversion module 5 through the sound-conducting catheter 4. The length of the sound-conducting catheter 4 is determined according to the specific on-site use situation, and it is only necessary to ensure that the sound conversion module 5 is far away from the sound interference source. A layer of sound insulation cotton 10 is wrapped outside the sound-conducting catheter 4 to prevent the external sound from interfering with the collected sound signal during the transmission process. Among them, the sound-conducting catheter 4 and the microphone 6 in the sound conversion module 5 are installed adjacent to each other head-to-head through a fixing bracket. The tail of the sound-conducting catheter 4 is in a horn shape, and the microphone 6 is located inside the horn opening. This way is more conducive to the microphone 6 to collect the sound signal. The housing 8 of the sound conversion module and the sealing cover 7 are sound insulation boards, which well eliminate the interference of external noise during the sound collection of the microphone 6. Finally, the microphone 6 converts the collected sound signal excluding external interference into an electrical signal for further analysis and judgment by technicians or computer software. The gas engine sound collection device can shield the external sound interference of the engine body and can be installed at the detection point to continuously collect the running sound of the engine.

[0031] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution and the inventive concept of the present utility model, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A gas engine sound collection device, comprising a stethoscope head fixing shell (2), a sound transmission conduit (4), a sound conversion module housing (8) and a sound conversion module (5); It is characterized in that; A stethoscope head mounting groove (11) is provided inside the stethoscope head fixing shell (2), and a stethoscope head (1) is sleeved inside the stethoscope head mounting groove (11). A magnet mounting groove (12) is provided around the stethoscope head mounting groove (11) and along the inner wall of the stethoscope head fixing shell (2), and a magnet (3) is sleeved inside the magnet mounting groove (12). The remaining void inside the stethoscope head fixing shell (2) is completely filled with sound insulation cotton (10). One end of the stethoscope head fixing shell (2) is provided with a sound conversion module housing (8), and a sound conversion module (5) is sleeved inside the sound conversion module housing (8). The stethoscope head (1) is connected to the sound conversion module (5) through a sound transmission conduit (4). The outside of the sound transmission conduit (4) is wrapped with a layer of sound insulation cotton (10). Inside the sound conversion module (5), the sound transmission conduit (4) and the microphone (6) are installed adjacent to each other head-to-head through a fixing bracket. The tail of the sound transmission conduit (4) is trumpet-shaped, and the microphone (6) is located inside the trumpet opening.

2. The sound acquisition device of a gas engine according to claim 1, characterized in that: A sealing cover (7) is installed on one side of the sound conversion module housing (8) by screws, and an L-shaped mounting plate (9) is welded at the back corner of the sound conversion module housing (8).

3. The sound acquisition device for a gas engine according to claim 1, wherein: A stethoscope membrane (13) is bonded to the bottom of the stethoscope head fixing shell (2), and the material of the stethoscope membrane (13) is titanium metal with less attenuation of sound wave transmission.

4. The sound acquisition device for a gas engine according to claim 1, characterized in that: The sound transmission conduit (4) is a traditional medical stethoscope sound transmission conduit, and the material is PVC.

5. The sound acquisition device of a gas engine according to claim 1, characterized in that: The sound conversion module housing (8) and the sealing cover (7) are made of sound insulation board material.

6. The sound acquisition device for a gas engine according to claim 1, wherein: The magnet (3) is a neodymium magnet, and the stethoscope head fixing shell (2) is of a rectangular structure.

Images