Natural gas blow-off valve with noise reduction structure

Abstract

The utility model discloses a natural gas blow-off valve with a noise reduction structure, and relates to the technical field of plastic buckets. Comprising a noise reduction pipe fixed to the output end of the blow-off valve body, a plurality of sets of flow reduction blocks arranged in the noise reduction pipe and a plurality of sets of flow reduction cavities arranged in the noise reduction pipe, the outer surface of each flow reduction block is of a curved surface structure, and the diameter of the input end of each flow reduction block is smaller than that of the output end of each flow reduction block; according to the blow-off valve, noise reduction is carried out through the blow-off valve body, gas flows through the multiple sets of flow reducing blocks, in the process that the gas passes through the flow reducing blocks, the flow reducing cavity is formed in the noise reducing pipe through a gap between every two adjacent sets of flow reducing blocks, and the flow reducing cavity is formed in the noise reducing pipe. And the gas is retained in the flow reducing cavity, so that the flow speed of the gas is slowed down, the noise generated when the gas flows out is reduced, and the noise reducing assembly is externally arranged and can be used for further reducing the noise of the large blow-off valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic barrels, in particular to a natural gas relief valve with a noise reduction structure. Background Art

[0002] The relief valve is a safety warning device for pipeline transportation of flammable and explosive gases. When the pressure at the control point exceeds the set value (bubble burst pressure) due to some temporary reason, the valve discharges a certain amount of gas. An existing patent for a relief valve for natural gas, patent publication number CN217502738U, includes a base, a valve body is fixedly provided on the top of the base, a valve seat is provided on the top of the valve body, a rain cover is provided on the outside of the valve body and the valve seat, the rain cover is fixedly connected to the top of the base, a valve cover is provided on the top of the valve seat, a sealing ring is fixed on the top of the valve cover, a transmission mechanism is provided on the top of the rain cover, the transmission mechanism is transmission-connected to the valve cover, and the transmission mechanism drives the valve cover to move downward. The elastic force after the balloon is inflated can make the inner wall of the balloon tightly adhere to the inlet and outlet pipes, thereby improving the sealing of the pipe connection and preventing natural gas leakage from the relief valve.

[0003] Regarding the above-mentioned related technologies, the inventors believe that the following defects exist: the relief valve can prevent natural gas leakage, but in actual use, the relief valve will generate a certain amount of noise during the pressure relief process. If the protective measures are not appropriate and workers work in a noisy environment for a long time, it may cause hearing damage to the workers. Therefore, we proposed a natural gas relief valve with a noise reduction structure to solve the above-mentioned problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a natural gas relief valve with a noise reduction structure, which solves the problem that the relief valve generates certain noise during the pressure relief process. If the protective measures are not appropriate, workers may suffer hearing damage if they work in a noisy environment for a long time.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A natural gas relief valve with a noise reduction structure comprises a relief valve body and a built-in noise reduction component arranged at the output end of the relief valve body;

[0006] The built-in noise reduction component includes a noise reduction pipe fixed to the output end of the relief valve body, a plurality of flow reduction blocks arranged inside the noise reduction pipe, and a plurality of flow reduction chambers arranged inside the noise reduction pipe.

[0007] Preferably, the outer surface of the downflow block is a curved structure, and the diameter of the input end of the downflow block is smaller than the diameter of the output end.

[0008] Preferably, the gap between two adjacent groups of the flow reduction blocks forms the flow reduction cavity inside the noise reduction tube.

[0009] Preferably, it also includes an external noise reduction component fixed to the output end of the noise reduction tube, and the external noise reduction component includes a noise reduction box fixed to the output end of the noise reduction tube, three groups of baffles arranged inside the noise reduction box, and an input pipe arranged inside the noise reduction box.

[0010] Preferably, the gap between the two groups of baffles forms a first flow cavity inside the noise reduction box, the gap between the two groups of baffles forms a second flow cavity inside the noise reduction box, and the gap between one group of baffles and the noise reduction box forms a third flow cavity inside the noise reduction box.

[0011] Preferably, the input pipe is connected to the first flow chamber, the first flow chamber is connected to the third flow chamber through a transfer pipe, an output pipe is fixed inside the noise reduction box, the output pipe is connected to the third flow chamber, and noise reduction holes are provided on the outer surfaces of the input pipe, the transfer pipe and the output pipe. Beneficial effects

[0012] The utility model provides a natural gas relief valve with a noise reduction structure. Compared with the existing technology, it has the following beneficial effects:

[0013] The device is used to reduce noise in the relief valve body. The gas flows through several groups of downflow blocks. In the process of passing through the downflow blocks, the gas will be retained inside the downflow cavity, thereby slowing down the gas flow rate and reducing the noise generated when the gas flows out. Through the external noise reduction component, it can be used for large relief valve bodies to further reduce noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the utility model as a whole.

[0015] Figure 2 This is a schematic cross-sectional view of the built-in noise reduction component in the present invention.

[0016] Figure 3 It is a structural schematic diagram of the downflow block in the utility model.

[0017] Figure 4 This is a schematic cross-sectional view of the external noise reduction component in the present invention.

[0018] In the picture:

[0019] Relief valve body;

[0020] Built-in noise reduction components; 21. Noise reduction tube; 22. Flow reduction block; 23. Flow reduction cavity;

[0021] External noise reduction component; 31. Noise reduction box; 32. Baffle; 33. Input pipe; 34. First flow chamber; 35. Second flow chamber; 36. Third flow chamber; 37. Transfer tube; 38. Output pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The utility model provides a technical solution: a natural gas relief valve with a noise reduction structure, comprising a relief valve body 1, and a built-in noise reduction component 2 arranged at the output end of the relief valve body 1;

[0024] The built-in noise reduction component 2 includes a noise reduction pipe 21 fixed to the output end of the relief valve body 1 , a plurality of flow reduction blocks 22 arranged inside the noise reduction pipe 21 , and a plurality of flow reduction chambers 23 arranged inside the noise reduction pipe 21 .

[0025] In this embodiment: the valve body 1 is used to reduce noise, and the gas flows through several groups of downflow blocks 22. In the process of passing through the downflow blocks 22, the gas will be retained inside the downflow cavity 23, thereby slowing down the gas flow rate and reducing the noise generated when the gas flows out.

[0026] See also Figure 1-3 The outer surface of the downflow block 22 is a curved structure, and the input end diameter of the downflow block 22 is smaller than the output end diameter.

[0027] In this embodiment, the gas is retained inside the downflow chamber 23 during the flow process.

[0028] See also Figure 1-3 The gap between two adjacent groups of flow reduction blocks 22 forms a flow reduction cavity 23 inside the noise reduction tube 21.

[0029] In this embodiment, the gas will be retained in the downflow cavity 23, thereby slowing down the gas flow rate and reducing the noise generated when the gas flows out.

[0030] See also Figure 1 , Figure 4 , and also includes an external noise reduction component 3 fixed at the output end of the noise reduction tube 21. The external noise reduction component 3 includes a noise reduction box 31 fixed at the output end of the noise reduction tube 21, three groups of baffles 32 arranged inside the noise reduction box 31, and an input pipe 33 arranged inside the noise reduction box 31.

[0031] In this embodiment: it is used for a large relief valve body 1 to further reduce noise.

[0032] See also Figure 1 , Figure 4 The gap between the two groups of baffles 32 forms a first flow chamber 34 inside the noise reduction box 31, the gap between the two groups of baffles 32 forms a second flow chamber 35 inside the noise reduction box 31, and the gap between one group of baffles 32 and the noise reduction box 31 forms a third flow chamber 36 inside the noise reduction box 31.

[0033] In this embodiment, the gas first passes through the input tube 33 and enters the first flow chamber 34 , then flows from the first flow chamber 34 through the transfer tube 37 to the third flow chamber 36 , and finally flows out of the third flow chamber 36 through the output tube 38 .

[0034] See also Figure 1 , Figure 4 The input pipe 33 is connected to the first flow chamber 34, and the first flow chamber 34 is connected to the third flow chamber 36 through the adapter tube 37. An output pipe 38 is fixed inside the noise reduction box 31, and the output pipe 38 is connected to the third flow chamber 36. Noise reduction holes are provided on the outer surfaces of the input pipe 33, the adapter tube 37 and the output pipe 38.

[0035] In this embodiment, during the flow of gas, the noise generated by the noise reduction holes is transmitted to the first flow cavity 34 , the second flow cavity 35 and the third flow cavity 36 , and the sound is reduced inside the flow cavity.

[0036] When the relief valve body 1 is exhausted, the gas flows through several groups of downflow blocks 22. In the process of passing through the downflow blocks 22, the gas will be retained inside the downflow chamber 23, thereby slowing down the gas flow rate and reducing the noise generated when the gas flows out. By adding an external noise reduction component 3, the gas first passes through the input pipe 33 and enters the first flow chamber 34. Then the gas flows from the first flow chamber 34 through the transfer pipe 37 to the third flow chamber 36. Finally, the gas flows out from the third flow chamber 36 through the output pipe 38. During the flow of the gas, the noise generated by the noise reduction hole is transmitted to the first flow chamber 34, the second flow chamber 35 and the third flow chamber 36, and the sound is reduced inside the flow chamber.

[0037] In summary, the device is used to reduce noise by using the relief valve body 1. The gas flows through several groups of downflow blocks 22. In the process of passing through the downflow blocks 22, the gas will be retained inside the downflow cavity 23, thereby slowing down the gas flow rate and reducing the noise generated when the gas flows out. Through the external noise reduction component 3, it can be used for large relief valve bodies 1 to further reduce noise.

[0038] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A natural gas relief valve with a noise reduction structure, comprising a relief valve body (1), characterized in that: It also includes a built-in noise reduction component (2) arranged at the output end of the relief valve body (1); The built-in noise reduction component (2) comprises a noise reduction pipe (21) fixed to the output end of the relief valve body (1), a plurality of groups of flow reduction blocks (22) arranged inside the noise reduction pipe (21), and a plurality of groups of flow reduction chambers (23) arranged inside the noise reduction pipe (21).

2. The natural gas relief valve with a noise reduction structure according to claim 1, characterized in that: The outer surface of the downflow block (22) is a curved structure, and the diameter of the input end of the downflow block (22) is smaller than the diameter of the output end.

3. The natural gas relief valve with a noise reduction structure according to claim 1, characterized in that: The gap between two adjacent groups of the flow reduction blocks (22) forms the flow reduction cavity (23) inside the noise reduction tube (21).

4. The natural gas relief valve with a noise reduction structure according to claim 1, characterized in that: The device further comprises an external noise reduction component (3) fixed to the output end of the noise reduction tube (21), wherein the external noise reduction component (3) comprises a noise reduction box (31) fixed to the output end of the noise reduction tube (21), three groups of baffles (32) arranged inside the noise reduction box (31), and an input tube (33) arranged inside the noise reduction box (31).

5. The natural gas relief valve with a noise reduction structure according to claim 4, characterized in that: The gap between the two groups of baffles (32) forms a first flow chamber (34) inside the noise reduction box (31), the gap between the two groups of baffles (32) forms a second flow chamber (35) inside the noise reduction box (31), and the gap between one group of baffles (32) and the noise reduction box (31) forms a third flow chamber (36) inside the noise reduction box (31).

6. The natural gas relief valve with a noise reduction structure according to claim 5, characterized in that: The input pipe (33) is in communication with the first flow chamber (34), and the first flow chamber (34) is in communication with the third flow chamber (36) via a transfer pipe (37). An output pipe (38) is fixed inside the noise reduction box (31), and the output pipe (38) is in communication with the third flow chamber (36). Noise reduction holes are provided on the outer surfaces of the input pipe (33), the transfer pipe (37), and the output pipe (38).

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