Diffusing, silencing and noise-reducing device for gas buried valve

Abstract

The utility model relates to the field of sound attenuation and noise reduction devices, in particular to a diffusion sound attenuation and noise reduction device for a gas buried valve, which comprises a first hot galvanizing metal net, a mounting frame, a connecting spring, a self-pressure-relief top cover, a gland and a gas diffusion valve, the upper end of the first hot-dip galvanized metal net is sleeved with a mounting frame, a self-pressure-relief top cover used for safely relieving pressure when the flow rate of exhausted gas exceeds 30 m / s and the pressure exceeds 0.3 Mpa is mounted in the center of the upper surface of the mounting frame, a gland used for relieving pressure is mounted in the center of the upper surface of the self-pressure-relief top cover, and three sets of air diffusion valves are sequentially and transversely mounted at the upper end of the gland. According to the diffusion, noise reduction and noise reduction device for the gas buried valve, noise generated in the exhaust process of gas is reduced again through the secondary noise reduction silencer, when the gas passes through the silencer, sound waves can be reflected, absorbed, scattered and the like through a noise reduction material and an internal structure, the noise reduction effect is good, and the noise reduction effect is good. Therefore, the noise propagation is weakened again.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of noise reduction device, especially to a kind of gas buried valve diffusion sound attenuation noise reduction device. BACKGROUND

[0002] Gas buried valve device is a kind of valve specially designed for gas pipeline system, its main feature is buried installation, usually used for city gas, heat exchanger, steel plant and other equipment gas transmission and cut-off, this kind of valve device is usually composed of carbonized teflon sealing ring and spring, and it has strong adaptability to pressure and temperature changes, and will not produce any leakage within the marked pressure and temperature range.

[0003] When the pressure inside the gas system exceeds the design limit, it may cause physical damage to the pipeline, valve and other equipment, which not only may cause expensive repair costs, but also may cause dangerous accidents, such as explosion or fire, and the noise generated during the traditional gas discharge is usually large, which causes disturbance to the surrounding environment and personnel, and if the gas discharge is too concentrated, it not only increases the noise, but also may cause additional risk due to local high pressure.

[0004] Therefore, in order to overcome the problem that in the system without automatic pressure relief mechanism, it may cause equipment damage and even safety accidents, and the noise generated during the traditional gas discharge is usually large, a gas buried valve diffusion sound attenuation noise reduction device can be designed, which mainly reduces the noise generated during the gas discharge process by the action of two-stage noise reduction muffler, when the gas passes through the muffler, the sound attenuation material and internal structure will reflect, absorb and scatter the sound wave, so as to weaken the propagation of noise again, which can reduce the influence of noise on the surrounding environment and personnel, improve the comfort and safety of work, and increase the safety automatic pressure relief top cover to ensure the continuity and safety of operation. SUMMARY

[0005] In order to overcome the problem that in the system without automatic pressure relief mechanism, it may cause equipment damage and even safety accidents, and the noise generated during the traditional gas discharge is usually large.

[0006] The technical scheme of the utility model is as follows: a kind of gas buried valve diffusion sound attenuation noise reduction device, including first hot-dip galvanized metal net, installation frame, connecting spring, self pressure relief top cover, gland, and gas diffusion valve;First hot-dip galvanized metal net upper end is equipped with installation frame, and the center of installation frame upper surface is installed with self pressure relief top cover for safe pressure relief when discharging gas flow rate exceeds 30m / s, pressure exceeds 0.3Mpa, the center of self pressure relief top cover upper surface is installed with gland for pressure relief, and the upper end of gland is sequentially transversely installed with three groups of gas diffusion valve, and the lower end of self pressure relief top cover is elastically connected with connecting spring, and connecting spring is provided with spring damper inside.

[0007] Preferably, the first hot-dip galvanized metal mesh serves as the basic protective layer of the device, which not only provides physical protection against external impurities entering the interior of the device, but also participates in preliminary sound absorption and diffusion, helping to reduce noise. The pressure relief top cover is one of the core components of the device, designed to monitor the flow rate and pressure of the exhaust gas. The gland is located at the center of the upper surface of the self-pressure relief top cover, assisting in pressure relief operation. The design of the gland helps to guide the flow of high-pressure gas to the subsequent air diffuser valve, ensuring that the gas can be discharged in an orderly and uniform manner. The air diffuser valve functions to disperse the high-pressure gas from the gland to reduce the speed and pressure of the gas discharge, thereby reducing noise and vibration caused by high-speed gas flow. The spring damper is located inside the connecting spring to absorb vibration energy and reduce the impact of mechanical vibration on the device.

[0008] Preferably, the second nut is installed at the end of the connecting spring away from the mounting frame, and the second screw is threadedly connected inside the second nut.

[0009] Preferably, two groups of air diffuser holes are symmetrically installed on the upper surface of the self-pressure relief top cover on both sides of the air diffuser valve, and the first hot-dip galvanized metal mesh is sleeved with a base at the lower end.

[0010] Preferably, a fixing frame is installed on the lower surface of the base, and the material of the mounting frame and the base is cast aluminum.

[0011] Preferably, a first nut is installed at the center of the lower surface of the fixing frame, and a first screw is threadedly connected inside the first nut.

[0012] Preferably, sound-absorbing sponge is installed inside the first hot-dip galvanized metal mesh, and a second hot-dip galvanized metal mesh is installed on the side of the sound-absorbing sponge away from the first hot-dip galvanized metal mesh.

[0013] Preferably, a plurality of metal mesh grids are linearly arranged on the surfaces of the first and second hot-dip galvanized metal meshes.

[0014] The utility model discloses a beneficial effect: compared with traditional one kind of gas buried valve diffusion sound reduction device, this novel provides a firm and corrosion -resistant protective layer through first hot -dipped galvanized metal net, be helpful to the sound absorption and diffusion of preliminary, reduce the noise spread also protect internal component from the influence of outside environment, provide the stable basic structure for whole device, when the discharge gas flow rate exceeds 30m / s or pressure exceeds 0.3Mpa, self -relieving top cover can open automatically and carry out safe pressure relief, effectively prevent system from being damaged or causing safety accident because of too high pressure or flow rate, this is the key design of guaranteeing system safety, be located on the surface center of self -relieving top cover, assist to carry out pressure relief operation, ensure that high -pressure gas can be effectively guided to subsequent air -diffusion valve to realize uniform, orderly discharge, three groups of transverse installation air -diffusion valve will high -pressure gas from gland dispersion discharge, this not only reduces the pressure and flow rate of single point, reduces noise and vibration, also makes gas release more uniform and gentle, self -relieving top cover is elastically connected to the lower end of mounting frame through connecting spring, this design allows the top cover to move flexibly according to internal pressure change, and simultaneously spring damper can absorb vibration energy, reduce the influence of mechanical vibration on device, ensure smooth action, increase the stability and durability of device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The utility model discloses a kind of gas buried valve diffusion sound reduction device overall structure schematic diagram of the utility model, as shown in the figure.

[0016] Figure 2 The utility model discloses a kind of gas buried valve diffusion sound reduction device metal grid structure schematic diagram, as shown in the figure.

[0017] Figure 3 The utility model discloses a kind of gas buried valve diffusion sound reduction device spring structure schematic diagram, as shown in the figure.

[0018] Figure 4 The utility model discloses a kind of gas buried valve diffusion sound reduction device air-diffusion valve structure schematic diagram, as shown in the figure.

[0019] Figures and signs are explained: 1, first hot-dipped galvanized metal net; 2, mounting frame; 3, base; 4, first nut; 5, first screw; 6, fixed frame; 7, metal grid; 8, sound-absorbing sponge; 9, second hot-dipped galvanized metal net; 10, connecting spring; 11, second nut; 12, second screw; 13, self-relieving top cover; 14, gland; 15, air-diffusion hole; 16, air-diffusion valve. DETAILED DESCRIPTION

[0020] The utility model is further explained in connection with the drawings and examples.

[0021] Please refer to Figure 1 -Figure 4 The utility model provides a kind of embodiment: a kind of gas buried valve dissipates sound reduction noise device, including first galvanized metal net 1, installation frame 2, connecting spring 10, self pressure relief top cover 13, gland 14 and gas dispersion valve 16;First galvanized metal net 1 upper end is equipped with installation frame 2, and the upper surface center of installation frame 2 is equipped with self pressure relief top cover 13 for when discharging gas flow rate exceeds 30m / s, pressure exceeds 0.3Mpa, and self pressure relief top cover 13 upper surface center is equipped with gland 14 for pressure relief, and three groups of gas dispersion valve 16 are sequentially transversely installed in the upper end of gland 14, and connecting spring 10 is elastically connected to the lower end of self pressure relief top cover 13, and spring damper is equipped in connecting spring 10.

[0022] Please refer to Figure 1 - Figure 2 In the embodiment, second nut 11 is installed at the end of connecting spring 10 away from installation frame 2, second screw 12 is threadedly connected inside second nut 11, and the pre-tightening force of connecting spring 10 can be conveniently adjusted by rotating second screw 12, so as to adapt to different working conditions and requirements, which makes the device more flexible to cope with various pressure changes, the combination of second screw 12 and second nut 11 provides a more stable fixing point for connecting spring 10, which helps to reduce loosening or displacement problems caused by external vibration or internal pressure fluctuation, improves the stability of the overall structure, this design simplifies the process of checking and maintaining connecting spring 10, if it is necessary to replace or adjust the spring, only second screw 12 and second nut 11 need to be operated, without disassembling the entire device, saving time and labor cost, two groups of gas dispersion holes 15 are symmetrically installed on the upper surface of self pressure relief top cover 13 on both sides of gas dispersion valve 16, and base 3 is sleeved at the lower end of first galvanized metal net 1, two groups of symmetrically installed gas dispersion holes 15 can assist gas dispersion valve 16 to discharge gas, so that gas can be released more uniformly, which not only helps to reduce noise and vibration caused by concentrated gas discharge, but also reduces the risk of local excessive pressure, by increasing additional gas dispersion path, even if main gas dispersion valve 16 is blocked or fails, gas dispersion hole 15 can also serve as a backup channel to ensure that gas can be safely released, reducing the risk of excessive pressure accumulation in the system, the design of base 3 provides a more solid support foundation for the entire device, enhancing the stability and durability of the overall structure.

[0023] Please refer to Figure 2 - Figure 3In this embodiment, the base 3 lower surface is mounted with a fixed frame 6, the installation frame 2 and the base 3 material is cast aluminum, the fixed frame 6 increases the stability of the entire device, ensures that it can be firmly maintained in place under various working conditions, reduces movement or shaking caused by external vibration or internal pressure changes, cast aluminum material has good corrosion resistance, especially suitable for gas buried valve diffusion sound attenuation noise reduction device used in underground or humid environment, prolongs the service life of the equipment, compared with traditional materials such as steel, cast aluminum has a higher strength-to-weight ratio, which means that while ensuring the structural strength, it can significantly reduce the overall weight of the device, facilitating transportation and installation, the lower surface of the fixed frame 6 is centrally mounted with a first nut 4, the first nut 4 is internally threaded with a first screw 5, the combination of the first screw 5 and the first nut 4 provides a solid fixing method that can ensure the entire device is more securely installed in the predetermined position, reducing the risk of displacement caused by external vibration or operation, the height or angle of the device can be easily adjusted by rotating the first screw 5, making the installation process more flexible and able to adapt to different terrains and installation requirements, this adjustment mechanism is crucial to ensure the device is in the best working condition, the use of screw and nut design simplifies the installation and disassembly process of the device, compared with welding or other permanent connection methods, this method can quickly complete assembly or maintenance without special tools, improving work efficiency, the additional support provided by the first screw 5 can help distribute the pressure the device is subjected to, especially when the ground is not flat or weak, it can effectively prevent the device from sinking or tilting.

[0024] Please refer to Figure 3 Figure 4 ​In this embodiment, the first hot-dip galvanized metal net 1 is installed with sound-absorbing sponge 8 on the inside, and the second hot-dip galvanized metal net 9 is installed on the side away from the first hot-dip galvanized metal net 1. The sound-absorbing sponge 8 can effectively absorb the noise generated during the gas emission process, significantly reducing environmental noise pollution. Placing the sound-absorbing sponge 8 between the two layers of hot-dip galvanized metal nets can maximize its sound-absorbing effect and provide a quieter operating environment. The first and second hot-dip galvanized metal nets 9 not only provide physical protection for the sound-absorbing sponge 8, preventing external objects from directly contacting and possibly damaging the sponge material, but also enhance the structural strength and durability of the entire device. The hot-dip galvanizing process gives the metal net excellent corrosion resistance, allowing it to be used in harsh environments for a long time without rusting or being damaged, thereby extending the service life of the entire sound-absorbing device. The first hot-dip galvanized metal net 1 and the second hot-dip galvanized metal net 9 have multiple sets of metal grids 7 linearly arranged on their surfaces. The metal grids 7 help to diffuse and direct sound waves, allowing noise to more evenly contact the internal sound-absorbing sponge 8 layer, thereby improving the overall sound-absorbing effect. The linearly arranged metal grids 7 not only do not weaken the overall strength of the metal net, but also enhance its rigidity and load-bearing capacity through optimized structural layout, making the entire device more robust and durable. The grid design allows gas to more easily penetrate the two layers of metal nets, ensuring smooth airflow while also helping to dissipate heat and prevent local overheating.

[0025] When the system is in normal operating conditions, i.e., the flow rate of the exhaust gas does not exceed 30 m / s and the pressure does not exceed 0.3 Mpa, the self-relief top cover 13 remains closed. At this time, the first hot-dip galvanized metal net 1, the sound-absorbing sponge 8, and the second hot-dip galvanized metal net 9 work together to preliminarily absorb sound and control noise for the gas passing through the device. As the pressure or flow rate of the gas in the system rises, once it reaches the set safety threshold (i.e., the flow rate exceeds 30 m / s or the pressure exceeds 0.3 Mpa), the self-relief top cover 13 will automatically activate its safety relief function. The self-relief top cover 13 begins to open, allowing excess high-pressure gas to pass through. Since the lower end of the self-relief top cover 13 is connected by a connecting spring 10, and a spring damper is installed inside the spring, this allows the top cover to move smoothly in response to pressure changes while reducing vibrations, protecting the stability of the entire system. Three sets of horizontally arranged gas dispersion valves 16 are installed above the opened self-relief top cover 13. These gas dispersion valves 16 divide the high-pressure gas into multiple directions for discharge, reducing the intense noise that may be generated by direct discharge. In addition, two sets of gas dispersion holes 15 are symmetrically installed on both sides of the self-relief top cover 13 above the surface, further helping to evenly release the gas and reduce noise levels. After the initial diffusion and pressure relief, the gas still needs to pass through the structure layer composed of the first hot-dip galvanized metal net 1 and the second hot-dip galvanized metal net 9. The sound-absorbing sponge 8 installed here will further absorb the remaining noise, ensuring that the emission process is as quiet as possible.

[0026] Through the above steps, the design of the self-relief top cover 13 can automatically perform safety relief when the exhaust gas flow rate exceeds 30 m / s and the pressure exceeds 0.3 Mpa, effectively preventing safety hazards caused by excessive pressure or flow rate. The combination of sound-absorbing sponge 8 and first and second hot-dipped galvanized metal mesh 1 and 9 can effectively absorb and isolate noise, reducing noise pollution during gas exhaust. The installation frame 2 and base 3 made of cast aluminum provide a solid support, while the spring damper inside the connecting spring 10 enhances the stability and durability of the entire device. The end of the connecting spring 10 away from the installation frame 2 is further reinforced by the second nut 11 and second screw 12, allowing the tightness of the connecting spring 10 to be adjusted according to specific needs to adapt to different working environments and conditions. Three groups of air diffuser valves 16 are installed horizontally on the upper end of the gland 14, and two groups of air diffuser holes 15 are symmetrically installed on the upper surface of the self-relief top cover 13 on both sides of the air diffuser valves 16, ensuring that the gas can be released more uniformly, reducing the risk of concentrated discharge. The problem of noise generated during traditional gas exhaust is often large.

Claims

1. A kind of gas buried valve dissipates noise reduction device, including the first hot-dip galvanized metal net (1);Its characterized in that: It also includes the installation frame (2), connecting spring (10), self pressure relief top cover (13), gland (14), and air diffuser valve (16); the first hot galvanized metal net (1) is sleeved with the installation frame (2) on the upper end, the center of the upper surface of the installation frame (2) is installed with the self pressure relief top cover (13) for safe pressure relief when the exhaust gas flow rate exceeds 30m / s and the pressure exceeds 0.3Mpa, the upper surface of the self pressure relief top cover (13) is installed with the gland (14) for pressure relief, the upper end of the gland (14) is sequentially transversely installed with three groups of air diffuser valves (16), the lower end of the self pressure relief top cover (13) is elastically connected with the connecting spring (10), and the connecting spring (10) is internally provided with a spring damper.

2. The gas buried valve diffusion sound attenuation noise reduction device according to claim 1, characterized in that: The end of the connecting spring (10) away from the installation frame (2) is installed with the second nut (11), and the second nut (11) is internally threadedly connected with the second screw rod (12).

3. The gas buried valve diffusion sound attenuation noise reduction device according to claim 1, characterized in that: The upper surface of the self pressure relief top cover (13) is symmetrically installed with two groups of air diffuser holes (15) on both sides of the air diffuser valve (16), and the lower end of the first hot galvanized metal net (1) is sleeved with the base (3).

4. The gas buried valve diffusion sound attenuation noise reduction device according to claim 3, characterized in that: The lower surface of the base (3) is installed with the fixing frame (6), and the materials of the installation frame (2) and the base (3) are cast aluminum.

5. The gas buried valve diffusing noise reduction device according to claim 4, characterized in that: The center of the lower surface of the fixing frame (6) is installed with the first nut (4), and the first nut (4) is internally threadedly connected with the first screw rod (5).

6. The gas buried valve diffusion sound attenuation noise reduction device according to claim 1, characterized in that: The inner side of the first hot galvanized metal net (1) is installed with the sound-absorbing sponge (8), and the side of the sound-absorbing sponge (8) away from the first hot galvanized metal net (1) is installed with the second hot galvanized metal net (9).

7. The gas buried valve diffusion sound abatement noise reduction device of claim 1, wherein: The surfaces of the first hot galvanized metal net (1) and the second hot galvanized metal net (9) are linearly provided with a plurality of metal meshes (7).

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