An exhaust assembly

Abstract

This application discloses an exhaust assembly, including an exhaust valve, an adapter, and a flow restrictor. The exhaust valve has a liquid inlet channel. One end of the adapter is connected to the liquid inlet channel, and the other end is used to connect to a pipeline. The flow restrictor includes a flow restricting ring located between the liquid inlet channel and the adapter. The flow restricting ring has at least one flow restricting part inside, and the flow restricting part has at least one through hole connecting the liquid inlet channel and the pipeline. The flow restrictor can actively control the flow rate and dissipate the kinetic energy of the liquid flowing from the pipeline to the exhaust valve, thereby reducing the instantaneous flow velocity and flow rate of the liquid when it flows from the pipeline into the liquid inlet channel. This causes the liquid to transition to a stable flow state, reducing the possibility of dynamic turbulence within the exhaust valve. This effectively avoids the risk of leakage during exhaust valve venting due to sealing failure caused by dynamic turbulence, thus improving the sealing reliability and service life of the exhaust valve and enhancing its operational stability.

Description

Technical Field

[0001] This application relates to the field of pipeline transmission system technology, and in particular to an exhaust assembly. Background Technology

[0002] As a key safety component in pipeline transmission systems, air vents are typically installed at the highest point, bends, or other locations prone to gas accumulation in pipelines. They are used to release accumulated gas within the pipeline to prevent the formation of air pockets or exacerbation of water hammer effects, thereby ensuring efficient liquid transmission and improving pipeline safety during operation.

[0003] In the process of realizing this invention, the inventors discovered that the prior art has at least the following technical problems: due to the high flow rate of liquid flowing into the exhaust valve, the liquid is prone to dynamic turbulence inside the exhaust valve, which affects the working stability of the float, and thus the exhaust valve is at risk of sealing failure during operation, resulting in poor working stability of the exhaust valve. Utility Model Content

[0004] In view of this, this application provides an exhaust assembly to improve the technical problem in the prior art where the flow rate of liquid flowing into the exhaust valve is too high, resulting in poor working stability of the exhaust valve.

[0005] This application provides an exhaust assembly for installation on a pipeline. The exhaust assembly includes an exhaust valve, an adapter, and a flow restrictor. The exhaust valve has an inlet channel. One end of the adapter is connected to the inlet channel, and the other end of the adapter is used to connect to the pipeline. The flow restrictor includes a flow restricting ring located between the inlet channel and the adapter. The flow restricting ring has at least one flow restricting part inside, and the flow restricting part has at least one through hole that connects the inlet channel and the pipeline.

[0006] In this embodiment, by placing the flow-limiting ring at the inlet of the liquid inlet channel, its through-hole can actively control the flow rate and dissipate the kinetic energy of the liquid flowing from the pipeline to the exhaust valve. This reduces the instantaneous flow velocity and flow rate of the liquid flowing from the pipeline into the liquid inlet channel, allowing the liquid to change from dynamic turbulence to a stable flow state close to laminar or low turbulence. This reduces the possibility of dynamic turbulence occurring inside the exhaust valve, effectively avoiding the risk of leakage during exhaust valve venting due to sealing failure caused by dynamic turbulence. This improves the sealing reliability and service life of the exhaust valve, and enhances the operational stability of the exhaust valve.

[0007] In one possible implementation, the flow limiting part is provided with multiple through holes, which are distributed at intervals along the radial and circumferential directions of the flow limiting ring. The distance between adjacent through holes is L1, and L1 satisfies 2mm≤L1≤15mm.

[0008] In one possible implementation, the flow-limiting ring is provided with multiple flow-limiting parts, which are distributed at intervals along the thickness direction of the flow-limiting ring. The distance between adjacent flow-limiting parts is L2, and L2 satisfies 1mm≤L2≤75mm.

[0009] In one possible implementation, along the thickness direction of the flow-limiting ring, the projections of the through holes of adjacent flow-limiting portions are misaligned, overlap, or partially overlap.

[0010] In one possible implementation, along the thickness direction of the flow-limiting ring, the flow-limiting section near the liquid inlet channel has a flow-limiting cross-sectional area of ​​S1, and the flow-limiting section near the pipe has a flow-limiting cross-sectional area of ​​S2, where S1 and S2 satisfy S1 > S2.

[0011] In one possible implementation, the total flow cross-sectional area of ​​the flow-limiting section is S, and S satisfies 7mm²≤S≤80mm².

[0012] In one possible implementation, the flow-limiting ring further includes a limiting portion that protrudes from the outer side wall of the inlet end of the flow-limiting ring and is used to abut against the end face of the liquid inlet channel.

[0013] In one possible implementation, the exhaust assembly further includes a filter screen connected to the side of the flow-limiting ring facing the duct, the filter screen having a mesh size of X, and X satisfying 60 mesh ≤ X ≤ 100 mesh.

[0014] In one possible implementation, the flow-limiting ring and the inlet channel are bonded together with adhesive, which is made of epoxy resin or silicone.

[0015] In one possible implementation, the flow-limiting ring and the adapter are integrally molded.

[0016] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the flow-limiting ring provided in this application when the exhaust valve is in a sealed state;

[0019] Figure 2 This is a schematic diagram of the flow-limiting ring provided in this application when the exhaust valve is in the exhaust state;

[0020] Figure 3 This is a schematic diagram of the current-limiting ring provided in the first embodiment;

[0021] Figure 4 yes Figure 3 A sectional view;

[0022] Figure 5 This is a schematic diagram of the current-limiting ring provided in the second embodiment;

[0023] Figure 6 yes Figure 5 A sectional view;

[0024] Figure 7 yes Figure 5 Top view;

[0025] Figure 8 This is a cross-sectional view of the current-limiting ring provided in this application in a third embodiment;

[0026] Figure 9 This is a schematic diagram of the ball valve provided in this application when the exhaust valve is in a sealed state;

[0027] Figure 10 This is a schematic diagram of the ball valve provided in this application when the exhaust valve is in the exhaust state;

[0028] Figure 11 This is a schematic diagram of the adapter provided in the first embodiment;

[0029] Figure 12 yes Figure 11 A sectional view;

[0030] Figure 13 This is a schematic diagram of the adapter and the current-limiting ring provided in the second embodiment of the present application;

[0031] Figure 14 This is a schematic diagram of the adapter provided in the second embodiment and the ball valve.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1-Exhaust valve;

[0034] 11-Inlet channel;

[0035] 12-Float;

[0036] 13-Connecting rod;

[0037] 14 - Seals;

[0038] 15 - Exhaust passage;

[0039] 16-Valve cap;

[0040] 2-Adapter;

[0041] 21-First adapter;

[0042] 22-Second adapter;

[0043] 3-Current limiting device;

[0044] 31-Current limiting ring;

[0045] 311 - Current limiting section;

[0046] 311a - Through hole;

[0047] 312 - Limiting part;

[0048] 32-Ball valve;

[0049] 4-Pipeline.

[0050] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0051] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0052] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0053] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0054] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0055] Embodiments of this application provide an exhaust assembly for installation on a pipe, such as... Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the venting assembly includes an venting valve 1, an adapter 2, and a flow restricting device 3. The venting valve 1 is provided with a liquid inlet channel 11. One end of the adapter 2 is connected to the liquid inlet channel 11, and the other end of the adapter 2 is used to connect to the pipeline 4. The flow restricting device 3 includes a flow restricting ring 31, which is located between the liquid inlet channel 11 and the adapter 2. The flow restricting ring 31 has at least one flow restricting part 311 inside, and the flow restricting part 311 has at least one through hole 311a, which connects the liquid inlet channel 11 and the pipeline 4.

[0056] In this embodiment, the exhaust valve 1 is used to exhaust air, and the adapter 2 is used to provide an installation platform for the exhaust valve 1 so that the exhaust valve 1 can be stably installed on the pipeline 4, which is beneficial to improving the reliability of the exhaust valve 1 during operation. The flow limiting device 3 is located between the exhaust valve 1 and the adapter 2, and is used to limit the flow rate and velocity of the liquid flowing from the pipeline 4 to the exhaust valve 1, so as to avoid the risk of damage to the exhaust valve 1 due to the impact of high flow rate and high velocity liquid, thereby improving the safety and service life of the exhaust valve 1 during operation, so that the exhaust valve 1 can exhaust air stably, thereby ensuring the safety of the pipeline 4 and the efficiency of liquid transmission.

[0057] Specifically, the flow limiting device 3 can be an independent component, namely the flow limiting ring 31. By placing the flow limiting ring 31 at the inlet of the liquid inlet channel 11, its through hole 311a can actively control the flow rate and dissipate the kinetic energy of the liquid flowing from the pipe 4 to the exhaust valve 1, so as to reduce the instantaneous flow velocity and flow rate of the liquid when it flows from the pipe 4 into the liquid inlet channel 11. This allows the liquid to change from dynamic turbulence to a stable flow state close to laminar flow or low turbulence, thereby reducing the possibility of dynamic turbulence in the liquid inside the exhaust valve 1. This effectively avoids the risk of leakage when the exhaust valve 1 is venting due to sealing failure caused by dynamic turbulence, which is beneficial to improving the sealing reliability and service life of the exhaust valve 1 and improving the working stability of the exhaust valve 1.

[0058] During the assembly of the exhaust assembly, the flow-limiting part 311 of the flow-limiting ring 31 can be embedded in the inner cavity of the liquid inlet channel 11, and the adapter 2 can be sleeved on the outer wall of the liquid inlet channel 11, so that the liquid inlet channel 11 and the adapter 2 can surround the flow-limiting ring 31, which helps to improve the compactness of the exhaust assembly, reduce the possibility of the flow-limiting ring 31 detaching from the liquid inlet channel 11, and ensure the reliability of the flow-limiting ring 31 during operation.

[0059] Specifically, the axis of the through hole 311a of the flow restrictor 311 can coincide with and / or be parallel to the axis of the liquid inlet channel 11 to ensure the consistency of the flow direction of the liquid when it flows from the pipe 4 to the exhaust valve 1, avoid the risk of turbulence or local vortex caused by the deviation of the flow direction, and help improve the stability of the liquid when it flows from the pipe 4 to the exhaust valve 1.

[0060] The direction of liquid flow is consistent with the direction of force on the flow limiting part 311, so as to reduce the risk of deformation or damage to the flow limiting part 311 due to non-axial stress, which is beneficial to improving the service life of the flow limiting ring 31.

[0061] Meanwhile, by setting the axes of the through hole 311a and the liquid inlet channel 11 to coincide and / or be parallel, the unevenness of the liquid scouring the inner wall of the flow restrictor 311 and the liquid inlet channel 11 can be reduced, thus avoiding the risk of local wear or corrosion of the inner wall of the flow restrictor 311 and the liquid inlet channel 11.

[0062] In addition, the current limiting ring 31 has the characteristics of simple structure and easy processing, which not only facilitates the installation and maintenance of the current limiting device 3, but also helps to reduce the production cost of the current limiting device 3.

[0063] Therefore, the exhaust assembly in this embodiment can slow down the flow rate of liquid from pipe 4 to exhaust valve 1 through the flow limiting device 3, and limit the flow rate of liquid from pipe 4 to exhaust valve 1, so as to reduce the risk of dynamic turbulence in the liquid in exhaust valve 1 causing sealing failure of exhaust valve 1, improve the safety and service life of exhaust valve 1 during operation, and enable exhaust valve 1 to stably and continuously discharge gas during operation, thereby ensuring the safety of pipe 4 and the transmission efficiency of liquid in pipe 4.

[0064] In one possible implementation, the exhaust valve 1 includes a valve body (not shown in the figure) and a valve cap 16. The valve body is provided with a valve cavity (not shown in the figure) and a liquid inlet channel 11, and the valve cap 16 is provided with an exhaust port (not shown in the figure). Inside the valve cavity, there is a float 12, a connecting rod 13, a seal 14, and an exhaust channel 15. One end of the connecting rod 13 is connected to the float 12, and the other end of the connecting rod 13 is provided with the seal 14. The exhaust channel 15 is opened or closed through the seal 14, and the end of the exhaust channel 15 away from the seal 14 communicates with the exhaust port of the valve cap 16.

[0065] When the liquid flows in the pipe 4, some of the liquid will flow into the flow-limiting ring 31 through the adapter 2, and then into the inlet channel 11 of the exhaust valve 1 through the through hole 311a of the flow-limiting ring 31. Then, it will flow into the valve cavity through the inlet channel 11, so that the float 12 can slowly move upward along the height direction of the exhaust valve 1, thereby driving the connecting rod 13 to block the exhaust channel 15 through the sealing element 14, thus keeping the exhaust valve 1 in the closed state so that gas can accumulate in the valve cavity. As the amount of gas accumulated in the valve cavity gradually increases, the liquid flowing into the valve cavity will flow back into the pipe 4, so that the float 12 can slowly move downward along the height direction of the exhaust valve 1, thereby driving the connecting rod 13 to release the blockage of the exhaust channel 15 through the sealing element 14, thus keeping the exhaust valve 1 in the open state so that the gas accumulated in the valve cavity can be discharged to the external environment through the exhaust channel 15 and the exhaust port of the valve cap 16.

[0066] In this embodiment, the flow-limiting ring 31 can limit the flow rate and velocity of the liquid as it flows from the pipe 4 to the exhaust valve 1. This can prevent the float 12 from shifting or being damaged due to the impact of high flow rate and high velocity liquid. This ensures that the float 12 can block or unblock the exhaust channel 15 by driving the sealing element 14 through the connecting rod 13, thereby improving the reliability of the exhaust valve 1 during operation. It can also prevent the risk of the exhaust valve 1 failing to seal due to dynamic turbulence of liquid in the exhaust valve 1, thus ensuring the sealing performance of the exhaust valve 1 and extending the service life of the exhaust valve 1. This allows the exhaust valve 1 to exhaust steadily and continuously, thereby ensuring the safety of the pipe 4 and the efficiency of liquid transmission.

[0067] In one possible implementation, the flow-limiting part 311 can be fitted against the inner wall of the liquid inlet channel 11, or there can be a gap between the flow-limiting ring 31 and the inner wall of the liquid inlet channel 11, so that the flow-limiting ring 31 can adjust its flow cross-sectional area according to the flow rate and velocity requirements of the liquid at the installation location, thereby improving the versatility of the flow-limiting ring 31. Furthermore, when the flow-limiting part 311 is located within the liquid inlet channel 11, the liquid inlet channel 11 can limit the radial displacement of the flow-limiting ring 31, which helps to improve the stability and reliability of the connection between the flow-limiting ring 31 and the liquid inlet channel 11, thereby improving the stability of the liquid flowing from the pipe 4 to the exhaust valve 1.

[0068] In one possible implementation, the surface of the flow restrictor 311 facing the exhaust valve 1 can be chamfered to guide the assembly of the exhaust assembly and improve assembly efficiency.

[0069] In one specific implementation, such as Figure 5 , Figure 6 and Figure 7As shown, the flow limiting part 311 is provided with a plurality of through holes 311a, which are distributed at intervals along the radial and / or circumferential directions of the flow limiting ring 31. The distance between adjacent through holes 311a is L1, and L1 satisfies 2mm≤L1≤15mm.

[0070] In this embodiment of the application, by providing multiple through holes 311a on the flow limiting part 311, the impact on the flow limiting part 311 can be dispersed during the process of liquid flowing from the pipe 4 to the exhaust valve 1, thereby reducing the degree of liquid turbulence in a single through hole 311a. It can also reduce the risk of exhaust valve 1 failing to work due to blockage of a single through hole 311a, thereby improving the safety and reliability of the exhaust assembly during operation.

[0071] Meanwhile, since the current limiting part 311 has multiple through holes 311a, the operator can also change the current limiting effect by adjusting the number of through holes 311a, so that the current limiting ring 31 can adapt to the usage scenarios in different environments, meet different usage needs, and improve the flexibility of the current limiting ring 31 in the application process.

[0072] Furthermore, by setting multiple through holes 311a spaced radially and / or circumferentially along the flow-limiting ring 31, the liquid can be evenly distributed during the flow from the pipe 4 to the exhaust valve 1. This avoids the risk of excessively high liquid flow velocity in local through holes 311a leading to reduced liquid flow stability, thereby reducing the possibility of dynamic turbulence within the exhaust valve 1 and improving the sealing performance and reliability of the exhaust valve 1 during operation. The spaced distribution design also reduces the possibility of mutual interference between adjacent through holes 311a, further optimizing the liquid flow effect.

[0073] In one possible implementation, the flow cross-sectional area of ​​each through hole 311a on the flow restrictor 311 is the same, which is beneficial to improve the uniformity of liquid distribution during the flow process and reduce the possibility of local turbulence.

[0074] In one possible implementation, the flow cross-sectional area of ​​each through hole 311a on the flow limiting part 311 is different, which is beneficial for local optimization of the flow at different locations, so that the flow limiting ring 31 can meet different usage requirements, thereby achieving precise control of liquid flow.

[0075] The distance L1 between adjacent through holes 311a can be 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm, 13.5mm, 14mm, 14.5mm, 15mm, etc.

[0076] When the distance between adjacent through holes 311a is too small (e.g., L1 is less than 2mm), there is a greater possibility that the liquid flow between adjacent through holes 311a will interfere with each other, which can easily affect the stability of the liquid during the flow process. In addition, the overall structural strength of the flow limiting part 311 is too low, which makes it risky to break.

[0077] When the distance between adjacent through holes 311a is too large (e.g., L1 is greater than 15mm), the overall size of the flow-limiting ring 31 is too large, and the space utilization rate of the flow-limiting part 311 is low.

[0078] When the distance between adjacent through holes 311a satisfies 2mm≤L1≤5mm, the distance between adjacent through holes 311a is moderate, which can reduce the possibility of liquid flow interference between adjacent through holes 311a, improve the stability of the liquid during the flow process, and also allow for a more reasonable distribution of each through hole 311a, so as to improve the space utilization of the flow limiting part 311 while ensuring the structural strength of the flow limiting part 311 and reducing the production cost of the flow limiting ring 31.

[0079] In one possible implementation, the spacing between adjacent through holes 311a is the same, which helps to improve the uniformity of liquid distribution during the flow process and reduce the possibility of local turbulence.

[0080] In one possible implementation, the spacing between adjacent through holes 311a is different, which is beneficial for local optimization of the flow conditions at different locations, so that the flow-limiting ring 31 can meet different usage requirements, thereby achieving a local performance improvement of the flow-limiting part 311.

[0081] In one specific implementation, such as Figure 8 As shown, the flow limiting ring 31 is provided with multiple flow limiting parts 311, which are distributed at intervals along the thickness direction of the flow limiting ring 31. The distance between adjacent flow limiting parts 311 is L2, and L2 satisfies 1mm≤L2≤75mm.

[0082] In this embodiment, by providing multiple flow-limiting parts 311 spaced apart along their thickness direction inside the flow-limiting ring 31, the flow rate and kinetic energy dissipation of the liquid flowing from the pipe 4 to the exhaust valve 1 can be controlled in a phased flow-limiting manner. This reduces the instantaneous flow velocity and flow rate of the liquid flowing from the pipe 4 into the liquid inlet channel 11, thereby reducing the possibility of dynamic turbulence generated inside the exhaust valve 1, avoiding the risk of internal components of the exhaust valve 1 being impacted by the liquid, and improving the safety of components such as the float 12 during operation, as well as the sealing performance and reliability of the exhaust valve 1.

[0083] Among them, since the flow limiting part 311 near the pipe 4 is subjected to relatively more impacts, when the flow limiting part 311 is deformed or damaged, the subsequent multiple flow limiting parts 311 can still work normally, and can also block some fragments from entering the cavity of the exhaust valve 1, so as to improve the safety of the internal components of the exhaust valve 1.

[0084] Meanwhile, by designing spaced flow restrictors 311, the liquid can gradually adjust its flow direction and velocity during the flow process to reduce turbulence and energy loss.

[0085] In addition, the number of current limiting parts 311 and the spacing between adjacent current limiting parts 311 can be designed according to the usage scenarios in different environments. The number, size and distribution of through holes 311a on the current limiting part 311 can also be independently designed according to the working conditions at different stages, so as to further improve the flexibility of the current limiting ring 31 and enable it to meet different usage requirements.

[0086] In one possible implementation, the thickness of the flow-limiting part 311 near the pipe 4 is greater than the thickness of the flow-limiting part 311 near the exhaust valve 1, so that the flow-limiting part 311 near the pipe 4 has higher structural strength, thereby reducing the possibility of deformation or damage during operation, which helps to improve the reliability of the flow-limiting ring 31 during operation.

[0087] The distance L2 between adjacent flow-limiting parts 311 can be 1mm, 3mm, 5mm, 7mm, 9mm, 11mm, 13mm, 15mm, 17mm, 19mm, 21mm, 23mm, 25mm, 27mm, 29mm, 31mm, 33mm, 35mm, 37mm, 39mm, 41mm, 43mm, 45mm, 47mm, 49mm, 51mm, 53mm, 55mm, 57mm, 59mm, 61mm, 63mm, 65mm, 67mm, 69mm, 71mm, 73mm, 75mm, etc.

[0088] When the distance between adjacent flow restrictors 311 is too small (e.g., L2 is less than 1 mm), vortices or backflows are easily formed between adjacent flow restrictors 311, affecting the stability of liquid flow.

[0089] When the distance between adjacent flow restricting parts 311 is too large (e.g., L2 is greater than 75mm), the synergistic effect between adjacent flow restricting parts 311 is easily lost, resulting in the liquid not being able to be restricted in stages during the flow process, which reduces the protection effect of the flow restricting ring 31 on the internal components of the exhaust valve 1.

[0090] When the distance L2 between adjacent flow restricting parts 311 satisfies 1mm≤L2≤75mm, the distance between adjacent flow restricting parts 311 is moderate, and the liquid pressure can be reduced by limiting the flow in stages, so that the liquid can flow continuously and stably from the pipe 4 to the exhaust valve 1 at a low flow rate, thereby avoiding the risk of dynamic turbulence in the liquid inside the exhaust valve 1 and ensuring the sealing and safety reliability of the exhaust valve 1 during operation.

[0091] In one specific embodiment, along the thickness direction of the flow-limiting ring 31, the projections of the through holes 311a of adjacent flow-limiting portions 311 are misaligned, overlapped, or partially overlapped.

[0092] In this embodiment, when the projections of the through holes 311a of adjacent flow restricting parts 311 are misaligned, it can prevent the liquid from forming a continuous flow channel between adjacent flow restricting parts 311, thereby increasing the resistance of the liquid during the flow process and reducing the flow velocity of the liquid when flowing from the pipe 4 to the exhaust valve 1. This can improve the flow restricting effect of the flow restricting ring 31 on the liquid flow velocity, so as to avoid the risk of dynamic turbulence generated inside the exhaust valve 1, reduce the impact of the liquid on the internal components of the exhaust valve 1, and thus improve the safety of the internal components of the exhaust valve 1 as well as the sealing and reliability of the exhaust valve 1 during operation. This makes the flow restricting ring 31 suitable for occasions with high liquid flow velocity restriction and high protection requirements for the exhaust valve 1.

[0093] When the projections of the through holes 311a of adjacent flow restrictors 311 completely overlap, the liquid in the pipe 4 can flow directly into the through hole 311a of the next flow restrictor 311 through the through hole 311a of one flow restrictor 311, making the flow path of the liquid smoother and improving the stability of the liquid flowing from the pipe 4 to the exhaust valve 1. This makes the flow restrictor ring 31 suitable for occasions that require a certain degree of flow restriction but allow the liquid to pass through at a relatively high flow rate.

[0094] When the projected portions of the through holes 311a of adjacent flow restricting parts 311 overlap, the through holes 311a of each flow restricting part 311 can guide the liquid during the flow process, so that the liquid has a deflection angle during the flow process, reducing the flow velocity of the liquid when flowing from the pipe 4 to the exhaust valve 1. This can improve the limiting effect of the flow restricting ring 31 on the liquid flow velocity, so as to avoid the risk of dynamic turbulence generated inside the exhaust valve 1, reduce the impact of the liquid on the internal components of the exhaust valve 1, and thus help improve the safety of the internal components of the exhaust valve 1 and the sealing and reliability of the exhaust valve 1 during operation. This makes the flow restricting ring 31 suitable for occasions that need to take into account both the pressure drop and flow capacity of the pipeline system.

[0095] In one specific embodiment, along the thickness direction of the flow-limiting ring 31, the total flow-passing cross-sectional area of ​​the flow-limiting part 311 near the liquid inlet channel 11 is S1, and the total flow-passing cross-sectional area of ​​the flow-limiting part 311 near the pipe 4 is S2, where S1 and S2 satisfy S1 > S2.

[0096] In this embodiment, along the direction of liquid flow from pipe 4 to exhaust valve 1, by setting the total flow cross-sectional area of ​​the end flow limiting part 311 to be larger than that of the beginning flow limiting part 311, the flow cross-sectional area inside the flow limiting ring 31 can be gradually increased. This further reduces the liquid flow velocity, avoiding the risk of dynamic turbulence inside the exhaust valve 1, reducing the impact of the liquid on the internal components of the exhaust valve 1, and thus improving the safety of the internal components of the exhaust valve 1 as well as the sealing and reliability of the exhaust valve 1 during operation. Simultaneously, the gradual design inside the flow limiting ring 31 can gradually decelerate the high-velocity liquid to a range suitable for the operation of the exhaust valve 1, avoiding the risk of insufficient gas release due to excessively rapid changes in liquid flow velocity, and thus improving the overall exhaust efficiency of the exhaust valve 1.

[0097] In one specific implementation, the total flow-passing cross-sectional area of ​​the flow-limiting part 311 is S, and S satisfies 7mm2≤S≤80mm2.

[0098] In this embodiment of the application, the total flow-passing cross-sectional area S of the flow-limiting part 311 can specifically be 7mm2, 10mm2, 13mm2, 15mm2, 17mm2, 20mm2, 23mm2, 25mm2, 27mm2, 30mm2, 33mm2, 35mm2, 37mm2, 40mm2, 43mm2, 45mm2, 47mm2, 50mm2, 53mm2, 55mm2, 57mm2, 60mm2, 63mm2, 65mm2, 67mm2, 70mm2, 73mm2, 75mm2, 77mm2, 80mm2, etc.

[0099] When the total flow cross-sectional area of ​​the flow limiting part 311 is too small (for example, S is less than 7 mm2), the liquid flows from the pipe 4 into the exhaust valve 1 too slowly, causing the float 12 and other components to move slowly, making it impossible for the gas to be discharged in time, thus affecting the exhaust efficiency of the exhaust valve 1.

[0100] When the total flow cross-sectional area of ​​the flow limiting part 311 is too large (for example, S is greater than 80 mm2), the speed at which the liquid flows from the pipe 4 into the exhaust valve 1 is too fast. This causes the flow limiting ring 31 to be unable to effectively limit the instantaneous flow rate and flow of the liquid flowing from the pipe 4 into the liquid inlet channel 11. As a result, the liquid is prone to dynamic turbulence inside the exhaust valve 1, which can easily damage components such as the float 12 and affect the sealing effect and service life of the exhaust valve 1.

[0101] When the total flow cross-sectional area of ​​the flow limiting part 311 meets the requirement of 7mm2≤S≤80mm2, the flow limiting ring 31 can effectively control the flow rate and dissipate the kinetic energy of the liquid, so that the exhaust valve 1 can have a suitable exhaust efficiency while ensuring the sealing performance and service life of the exhaust valve 1, thereby improving the safety and reliability of the exhaust valve 1 during operation.

[0102] In one specific implementation, such as Figure 4 and Figure 6 As shown, the flow-limiting ring 31 also includes a limiting part 312, which protrudes from the outer side wall of the inlet end of the flow-limiting ring 31 and is used to abut against the end face of the liquid inlet channel 11.

[0103] In this embodiment, the positioning accuracy of the flow-limiting ring 31 during assembly is improved by providing the limiting part 312, thereby increasing the overall assembly efficiency of the exhaust assembly. Simultaneously, the contact between the limiting part 312 and the end face of the liquid inlet channel 11 avoids the risk of the through hole 311a shifting, which could reduce the limiting effect, and also prevents the flow-limiting ring 31 from falling into the liquid inlet channel 11 and blocking it. Furthermore, since at least a portion of the flow-limiting ring 31 is located within the liquid inlet channel 11, this design further improves the positioning accuracy and installation efficiency of the flow-limiting ring 31.

[0104] In one possible implementation, the flow-limiting ring 31 and the liquid inlet channel 11 can be sealed together by the flow-limiting part 311. For example, by providing sealant between the limiting part 312 and the end face of the liquid inlet channel 11, the risk of liquid flowing out through the gap between the flow-limiting ring 31 and the liquid inlet channel 11 after flowing out of the through hole 311a can be reduced, thereby improving the sealing effect between the flow-limiting ring 31 and the liquid inlet channel 11.

[0105] In one specific embodiment, the exhaust assembly further includes a filter screen (not shown in the figure), which is connected to the side of the flow-limiting ring 31 facing the pipe 4. The mesh size of the filter screen is X, and X satisfies 60 mesh ≤ X ≤ 100 mesh.

[0106] In this embodiment, the filter screen is located on the side of the flow-limiting ring 31 facing the pipe 4. It is used to connect impurities in the liquid and prevent impurities from flowing into the exhaust valve 1 and causing damage to its internal components, thereby reducing the failure rate of the exhaust valve 1. Furthermore, by filtering the liquid through the filter screen, impurities can also be prevented from clogging the through hole 311a, so that the liquid can flow into or out of the exhaust valve 1 normally, thereby improving the stability and reliability of the exhaust valve 1 during operation and extending the service life of the exhaust valve 1.

[0107] Among them, the mesh number

[0108] When the mesh size of the filter screen is too small (e.g., X is less than 60 mesh), the pore size of the filter screen is too large, which makes it unable to filter larger impurities such as welding slag, causing the internal components of the exhaust valve 1 to be easily damaged.

[0109] When the mesh size of the filter screen is too large (e.g., X is greater than 100 mesh), the pore size of the filter screen is too small, which affects the flow rate of liquid from pipe 4 to exhaust valve 1.

[0110] When the mesh size of the filter screen meets the requirement of 60 mesh ≤ X ≤ 100 mesh, the pore size of the filter screen is moderate, which can effectively intercept harmful impurities while maintaining a high liquid flow rate, so as to ensure the safety, reliability and exhaust efficiency of the exhaust valve 1 during operation.

[0111] In one specific embodiment, the flow-limiting ring 31 and the liquid inlet channel 11 are bonded and fixed together by adhesive, which is made of epoxy resin or silicone.

[0112] In this embodiment, the flow-limiting ring 31 and the inner wall of the liquid inlet channel 11 are fixedly connected by adhesive, which eliminates the gap between them and improves the sealing performance of the connection between the flow-limiting ring 31 and the liquid inlet channel 11, thereby reducing the risk of liquid leakage. Furthermore, in actual operation, vibration occurs within the pipeline 4, and the high bonding strength and damping characteristics of the adhesive can absorb vibration energy, preventing the flow-limiting ring 31 from loosening or shifting during long-term use, ensuring the constant position of the through hole 311a, and extending the service life of the flow-limiting ring 31. At the same time, the adhesive bonding method is easy to implement and operate, which helps improve the assembly efficiency of the venting assembly. In addition, epoxy resin and silicone adhesives, while having high bonding performance, also provide corrosion resistance and vibration resistance, further extending the service life of the flow-limiting ring 31.

[0113] In one specific implementation, such as Figure 11 and Figure 12 As shown, the flow-limiting ring 31 and the adapter 2 are integrally formed.

[0114] In this embodiment, by integrally molding the flow-limiting ring 31 and the adapter 2, the sealing interface between the flow-limiting ring 31 and the liquid inlet channel 11 can be reduced, which helps to reduce the possibility of leakage during liquid flow and improves the overall sealing performance of the exhaust assembly. At the same time, it also avoids the risk of misalignment or displacement of the flow-limiting ring 31, improving the overall vibration resistance of the exhaust assembly. Furthermore, it reduces the number of components in the exhaust assembly, lowers the overall production cost, and better meets actual production needs.

[0115] In one possible implementation, such as Figure 11 and Figure 12 As shown, the surfaces of the adapter 2 and the pipe 4 that mate with each other are curved, so that the connection between the adapter 2 and the pipe 4 is tighter, which helps to improve the sealing reliability of the connection between the two. Specifically, the adapter 2 and the pipe 4 can be fixedly connected by welding or other methods.

[0116] In one possible implementation, such as Figure 9 and Figure 10 As shown, the flow limiting device 3 can also be a ball valve 32. By adjusting the opening of the ball valve 32, dynamic control of the liquid flow rate and velocity can be achieved, which is beneficial to improving the control accuracy of the liquid flow rate and velocity. In addition, during the maintenance of the exhaust valve 1, only the ball valve 32 needs to be closed, without stopping the flow of liquid in the pipeline 4, which is beneficial to improving the operation and maintenance efficiency and is more in line with the actual use needs.

[0117] In one possible implementation, such as Figure 13 and Figure 14As shown, the adapter 2 includes at least a first adapter 21 and a second adapter 22, with a preset included angle between the first adapter 21 and the second adapter 22, allowing the adapter 2 to be installed at the corner of the pipe 4. This design allows the exhaust assembly to be applied to complex pipe 4 layouts without needing to adjust the pipe 4's orientation, avoiding the risk of cutting or rearranging the pipe 4 due to space constraints. This improves the versatility of the exhaust assembly and reduces the layout difficulty and design cost of the pipe system.

[0118] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this application. The above description is only a preferred embodiment of this application, but this application does not limit the scope of implementation to what is shown in the drawings. Any changes made in accordance with the concept of this application, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, should be within the protection scope of this application.

Claims

1. An exhaust assembly characterized by, For installation on a pipeline, the venting assembly includes: An exhaust valve, wherein the exhaust valve is provided with a liquid inlet channel; An adapter, one end of which is connected to the liquid inlet channel, and the other end of which is used to connect to the pipeline; A flow limiting device, comprising a flow limiting ring located between the liquid inlet channel and the adapter, wherein the flow limiting ring has at least one flow limiting part inside, and the flow limiting part has at least one through hole communicating with the liquid inlet channel and the pipeline.

2. The exhaust assembly of claim 1, wherein, The flow limiting part is provided with multiple through holes, which are distributed at intervals along the radial and / or circumferential directions of the flow limiting ring. The distance between adjacent through holes is L1, and L1 satisfies 2mm≤L1≤15mm.

3. The exhaust assembly of claim 1, wherein, The current limiting ring is provided with multiple current limiting parts, which are distributed at intervals along the thickness direction of the current limiting ring. The distance between adjacent current limiting parts is L2, and L2 satisfies 1mm≤L2≤75mm.

4. The exhaust assembly of claim 3, wherein, Along the thickness direction of the flow-limiting ring, the projections of the through holes of adjacent flow-limiting portions are misaligned, overlap, or partially overlap.

5. The exhaust assembly of claim 3, wherein, Along the thickness direction of the flow-limiting ring, the flow-limiting section near the liquid inlet channel has a flow-through cross-sectional area of ​​S1, and the flow-limiting section near the pipe has a flow-through cross-sectional area of ​​S2, where S1 and S2 satisfy S1 > S2.

6. The exhaust assembly of any one of claims 1-5, wherein, The total flow-passing cross-sectional area of ​​the flow-limiting part is S, and S satisfies 7mm2≤S≤80mm2.

7. The exhaust assembly of any one of claims 1-5, wherein, The flow-limiting ring also includes a limiting part, which protrudes from the outer side wall of the inlet end of the flow-limiting ring and is used to abut against the end face of the liquid inlet channel.

8. The exhaust assembly of any one of claims 1-5, wherein, The exhaust assembly also includes a filter screen connected to the side of the flow-limiting ring facing the pipe. The mesh size of the filter screen is X, and X satisfies 60 mesh ≤ X ≤ 100 mesh.

9. The exhaust assembly of any one of claims 1-5, wherein, The flow-limiting ring and the liquid inlet channel are bonded and fixed together by adhesive, which is made of epoxy resin or silicone.

10. The exhaust assembly of any one of claims 1-5, wherein, The current-limiting ring and the adapter are integrally formed.

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