Portable silencer for gas first-aid repair

Abstract

The utility model discloses a portable silencer for fuel gas first-aid repair, which comprises a sleeve, a conical baffle plate is fixedly connected on a mounting plate, a plurality of groups of conical blocks are fixedly connected in an expansion cavity, and the expansion cavity is divided into a plurality of groups of multi-cavity chambers for reducing gas flow speed by the conical blocks; the portable gas diffusion silencer is designed, and the aim of silencing is achieved by adopting the theories of resistant silencing, resistive silencing and the like, adopting the technologies of sound absorption, sound insulation, sound reduction and the like and adopting the methods of flow velocity reduction, gas diffusion, multi-cavity sound insulation, speed gradient reduction at an exhaust port, heat energy conversion and the like. Therefore, noise occupational hazards of noise to diffusion operation staff can be eliminated, noise hazards to the surroundings during diffusion operation are reduced, complaints of residents are reduced, meanwhile, injuries of gravel sprayed by the diffusion pipe to the staff in the diffusion operation process can be eliminated, and the safety of the staff is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas emergency repair equipment, in particular to a portable silencer for gas emergency repair. Background Technique

[0002] During the medium-pressure gas emergency repair and gas release, and the wiring replacement process, due to the relatively high gas pressure in the pipeline, when the gas is discharged through the gas release pipe, whistling and noise will be generated. Moreover, the greater the pressure during the gas release operation, the greater the noise. After measurement, the noise is generally above 100 decibels. Due to the characteristics of the gas pipeline network, a large number of emergency repair operations are carried out in residential areas, causing serious noise pollution to the surrounding environment. It not only poses a risk of occupational hazards to the operating workers but also causes dissatisfaction among the surrounding residents. The noise generated during the gas release operation seriously exceeds the limit requirements of the national standard. Therefore, measures must be taken to reduce the noise; and during the emergency repair and purging operation of the workers, sundries in the pipeline, such as stones or sand grains, are ejected with the high-pressure air flow, which will cause harm to the operating workers. Therefore, we need to propose a portable silencer for gas emergency repair. Content of the Utility Model

[0003] The purpose of the utility model is to provide a portable silencer for gas emergency repair, which can eliminate the noise occupational hazards of the gas release operation workers, reduce the noise hazards caused to the surrounding during the gas release operation, reduce the complaints of the residents, and at the same time can eliminate the harm of the sand and stones ejected by the gas release pipe during the gas release operation to the personnel, and improve the safety of the operating workers, so as to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution:

[0005] A portable silencer for gas emergency repair, including a sleeve, the inner wall of the sleeve is fixedly connected with an expansion pipe, multiple groups of first through holes and second through holes are opened on the expansion pipe, an expansion cavity is arranged in the expansion pipe, one end of the sleeve is communicated with a diversion pipe for gas transmission, multiple groups of diffusion holes are opened at the end of the diversion pipe extending into the sleeve, a mounting plate is fixedly connected in the expansion cavity, a baffle plate arranged in a conical shape is fixedly connected to the mounting plate, multiple conical blocks are fixedly connected in the expansion cavity, and multiple multi-chambers for decelerating the gas flow velocity are separated in the expansion cavity through the conical blocks.

[0006] Preferably, the inside of the sleeve is filled with a sound-absorbing material for sound absorption, one end of the sleeve is arranged in an open shape, and the end of the sleeve arranged in an open shape is set as an exhaust port for gas discharge.

[0007] Preferably, multiple groups of deceleration holes for gas deceleration are arranged in a circular array on the mounting plate.

[0008] Preferably, a baffle is fixedly connected inside the expansion cavity. The baffle is arranged between a group of tapered blocks and the mounting plate, and a communication hole is provided on the baffle.

[0009] Preferably, a conveying cavity is separated inside the sleeve through an expansion pipe, and the expansion cavity is communicated with the conveying cavity through a first through hole and a second through hole.

[0010] Preferably, a flange is fixedly connected to the guide pipe.

[0011] Preferably, a collection hole for discharging sundries is provided at the end of the sleeve, and a sealing mechanism for sealing the collection hole is arranged at the end of the sleeve.

[0012] Preferably, the sealing mechanism includes an annular sealing plate, a sealing gasket and a stop block. The sealing gasket is arranged on the side of the sealing plate. The annular sealing plate is fixedly installed on the side of the sleeve through fixing screws. The stop block is fixedly connected to the side of the annular sealing plate, and the stop block is inserted into the collection hole.

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

[0014] To solve the problem of excessive noise during the gas dispersion process, the present utility model designs a portable gas dispersion silencer. By adopting theories such as reactive silencing and resistive silencing, and technologies such as sound absorption, sound insulation and noise reduction, the purpose of silencing is achieved by methods such as reducing the flow rate, gas diffusion, multi-chamber sound insulation, reducing the velocity gradient at the discharge port, and heat energy conversion. Thus, the noise occupational hazards to the workers during the dispersion operation can be eliminated, the noise hazards to the surrounding area during the dispersion operation can be reduced, the complaints from residents can be reduced, and at the same time, the injury to personnel caused by the sand and stones ejected from the dispersion pipe during the dispersion operation can be eliminated, and the safety of the operating personnel can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is one of the schematic cross-sectional structural diagrams of the present utility model;

[0017] Figure 3 is another schematic structural diagram of the present utility model;

[0018] Figure 4 is a schematic structural diagram of the guide pipe, mounting plate, baffle plate and other structures of the present utility model;

[0019] Figure 5 is a schematic structural diagram of the mounting plate and baffle plate of the present utility model;

[0020] Figure 6 is a schematic structural diagram of the tapered block of the present utility model;

[0021] Figure 7 Schematic diagram of the expansion pipe structure of the present utility model.

[0022] In the figure: 1, sleeve; 2, diversion pipe; 3, diffusion hole; 4, expansion pipe; 5, first through hole; 6, mounting plate; 7, deceleration hole; 8, baffle plate; 9, second through hole; 10, baffle; 11, communication hole; 12, conical block; 13, expansion cavity; 14, multi-chamber; 15, conveying cavity; 16, collection hole; 17, annular sealing plate; 18, sealing gasket; 19, stop block; 20, flange. Specific embodiments

[0023] 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 efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figure 1-7 , the present utility model provides a portable silencer for gas emergency repair, including a sleeve 1. An expansion pipe 4 is fixedly connected to the inner wall of the sleeve 1. A plurality of groups of first through holes 5 and second through holes 9 are opened on the expansion pipe 4. An expansion cavity 13 is arranged inside the expansion pipe 4. One end of the sleeve 1 is communicated with a diversion pipe 2 for gas transmission. A plurality of groups of diffusion holes 3 are opened at one end of the diversion pipe 2 extending into the sleeve 1. A mounting plate 6 is fixedly connected inside the expansion cavity 13. A baffle plate 8 arranged in a conical shape is fixedly connected to the mounting plate 6. A plurality of conical blocks 12 are fixedly connected inside the expansion cavity 13. The expansion cavity 13 is separated by the conical blocks 12 into a plurality of multi-chambers 14 for reducing the gas flow rate.

[0025] In this embodiment, by arranging the baffle plate 8, the gas flow direction can be changed. At the same time, the baffle plate 8 can block impurities such as sand and gravel in the discharged gas. Through the self-weight action of the sand and gravel and other impurities, the sand and gravel filtering effect is realized. By arranging the multi-chambers 14, when the gas passes through the tortuous multi-chambers 14, the gas flow rate is reduced, and the third noise reduction is realized.

[0026] The inside of the sleeve 1 is filled with a sound-absorbing material for sound absorption. One end of the sleeve 1 is open, and the open end of the sleeve 1 is set as an exhaust port for gas discharge.

[0027] A plurality of groups of deceleration holes 7 for gas deceleration are arranged in an annular array on the mounting plate 6.

[0028] It is worth noting that the deceleration holes 7 can decelerate the gas, reduce the gas flow rate into the multi-chambers 14, and facilitate subsequent noise reduction of the gas.

[0029] A baffle plate 10 is fixedly connected inside the expansion cavity 13. The baffle plate 10 is arranged between a group of conical blocks 12 and the mounting plate 6, and a communication hole 11 is formed on the baffle plate 10.

[0030] It is worth mentioning that the baffle plate 10 can prevent gas backflow.

[0031] The inside of the sleeve 1 is separated into a conveying cavity 15 by an expansion pipe 4. The expansion cavity 13 is communicated with the conveying cavity 15 through a first through hole 5 and a second through hole 9.

[0032] A flange 20 is fixedly connected to the diversion pipe 2.

[0033] It should be noted that the flange 20 and the fixing screws can be used to fixedly install the silencer on the gas discharge pipe.

[0034] A collection hole 16 for discharging sundries is formed at the end of the sleeve 1, and a sealing mechanism for sealing the collection hole 16 is arranged at the end of the sleeve 1.

[0035] In this embodiment, by opening the sealing mechanism, the collected sundries can be discharged through the collection hole 16.

[0036] The sealing mechanism includes an annular sealing plate 17, a sealing gasket 18 and a stopper 19. The sealing gasket 18 is arranged on the side of the sealing plate. The annular sealing plate 17 is fixedly installed on the side of the sleeve 1 through fixing screws. The stopper 19 is fixedly connected to the side of the annular sealing plate 17, and the stopper 19 is inserted into the collection hole 16.

[0037] It should be noted that when the annular sealing plate 17 is installed, the sealing gasket 18 can be made to closely adhere to the side of the sleeve 1, so as to seal the collection hole 16. By arranging the stopper 19 in the collection hole 16, when the annular sealing plate 17 is installed, the positioning of the annular sealing plate 17 can be realized, so as to facilitate the installation of the annular sealing plate 17.

[0038] During the specific use process, first, the flange 20 and the fixing screws are used to fixedly install the silencer on the gas discharge pipe. When the high-pressure discharged gas is conveyed to the expansion cavity 13 through the diversion pipe 2, part of the gas can diffuse into the expansion chamber through the diffusion holes 3. When the air is discharged to the expansion chamber through the diffusion holes 3, the air pressure can be reduced and the air flow rate can be decreased. Another part of the high-pressure discharged gas is sprayed onto the baffle plate 8 through the diversion pipe 2. The baffle plate 8 changes the gas flow direction, and at the same time, the baffle plate 8 can block impurities such as sand and gravel in the discharged gas. Through the self-weight action of the sand and gravel and other impurities, the sand and gravel filtering effect is realized.

[0039] After the high-pressure discharged gas enters the expansion cavity 13, some of the gas can enter the conveying cavity 15 through the first through hole 5 and the second through hole 9 for conveying, and then enter the multi-chamber 14 through the first through hole 5 and the second through hole 9. By setting multiple groups of the first through hole 5 and the second through hole 9, the width of the sound absorption frequency band can be increased, and the position of the resonance sound absorption peak can be changed by the depth of the first through hole 5 and the second through hole 9. This realizes the first noise reduction through the pressure drop. By filling the attracting material in the sleeve 1, the sound absorption material converts the kinetic energy of the noise into heat energy, thereby realizing the second noise reduction. Another part of the gas can also enter the multi-chamber 14 after passing through the deceleration hole 7 and the communication hole 11. When the gas passes through the tortuous multi-chamber 14, the gas flow rate decreases, realizing the third noise reduction.

[0040] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable silencer for gas emergency repair, comprising a sleeve (1), characterized in that: An expansion pipe (4) is fixedly connected to the inner wall of the casing (1). A plurality of groups of first through holes (5) and second through holes (9) are formed in the expansion pipe (4). An expansion cavity (13) is arranged in the expansion pipe (4). A diversion pipe (2) for gas transportation is communicated with the end of the casing (1). A plurality of groups of diffusion holes (3) are formed in one end of the diversion pipe (2) extending into the casing (1). A mounting plate (6) is fixedly connected in the expansion cavity (13). A baffle plate (8) arranged in a conical shape is fixedly connected to the mounting plate (6). A plurality of conical blocks (12) are fixedly connected in the expansion cavity (13). The expansion cavity (13) is separated by the conical blocks (12) into a plurality of multi-chambers (14) for reducing the gas flow velocity.

2. The portable silencer for gas emergency repair according to claim 1, characterized in that: The inside of the casing (1) is filled with a sound-absorbing material for sound absorption. One end of the casing (1) is arranged in an open manner. The end of the casing (1) arranged in an open manner is set as an exhaust port for gas discharge.

3. The portable silencer for gas emergency repair according to claim 1, characterized in that: A plurality of groups of deceleration holes (7) for gas deceleration are formed in a circular array on the mounting plate (6).

4. A portable silencer for gas emergency repair according to claim 1, characterized in that: A baffle plate (10) is fixedly connected in the expansion cavity (13). The baffle plate (10) is arranged between a group of conical blocks (12) and the mounting plate (6). A communication hole (11) is formed in the baffle plate (10).

5. The portable silencer for gas emergency repair according to claim 1, wherein: The inside of the casing (1) is separated into a conveying cavity (15) by the expansion pipe (4). The expansion cavity (13) is communicated with the conveying cavity (15) through the first through holes (5) and the second through holes (9).

6. The portable silencer for gas emergency repair according to claim 1, wherein: A flange plate (20) is fixedly connected to the diversion pipe (2).

7. The portable silencer for gas emergency repair according to claim 1, wherein: A collection hole (16) for debris discharge is formed in the end of the casing (1). A sealing mechanism for sealing the collection hole (16) is arranged at the end of the casing (1).

8. A portable silencer for gas emergency repair according to claim 7, characterized in that: The sealing mechanism includes an annular sealing plate (17), a sealing gasket (18) and a stop block (19). The sealing gasket (18) is arranged on the side of the sealing plate. The annular sealing plate (17) is fixedly installed on the side of the casing (1) through fixing screws. The stop block (19) is fixedly connected to the side of the annular sealing plate (17). The stop block (19) is inserted into the collection hole (16).

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