A special pressure-bearing PPR device for explosion-proof pipe

Abstract

The application discloses a special pressure-bearing PPR device for an anti-explosion pipe, which comprises a main body, a shunt passage, an exhaust device and a pressure-bearing structure, wherein the main body is a 90-degree arc structure and comprises a main flow channel, a first socket and a second socket; the shunt passage is connected with the main body and comprises an upper shunt passage and a lower shunt passage which are communicated with the main flow channel; the first socket is connected with the lower shunt passage in a butt joint mode, the second socket is connected with the upper shunt passage in a butt joint mode, the pressure-bearing structure and the exhaust device are arranged in the direction away from the main body of the shunt passage, and the upper shunt passage and the lower shunt passage are not communicated with each other. The application can absorb air pressure and water pressure through a series of mechanisms, plays a pressure-bearing role, and avoids the occurrence of pipe explosion. The device has the advantages of high pressure resistance, hydraulic shunt function, anti-turbulent flow and exhaust design, convenient overall installation, simple structure, convenient operation, convenient work and maintenance, wide application range and safe and reliable effect.

Description

Technical Field

[0001] This invention belongs to the technical field of water supply pipe fittings waterproof hammer, specifically relating to a pressure-bearing PPR device for explosion-proof pipes. Background Technology

[0002] With the continuous improvement of urban infrastructure, tap water has become an indispensable part of people's lives and production. However, in recent years, accidents involving burst water pipes in households have occurred frequently, which not only wastes water resources but also causes inconvenience to people's daily lives and even causes huge losses. Therefore, the safety of burst water pipes in households needs to be given special attention.

[0003] Analysis shows that there are many reasons for pipe bursts. Poor quality pipe materials are prone to cracking, and installation or quality issues can lead to damage from invisible stress. Pipe bursts under pressure are particularly common, as excessive instantaneous pressure within the pipe can cause it to burst. In addition, improper selection of pipe fittings, such as insufficient wall thickness, unreasonable structure, failure to meet usage requirements, and defects in the fittings themselves (e.g., poor quality, impurities, localized thin walls, dents), can all create safety hazards during use. For example, when pipes bend, the corner joints are typically 90° right angles. These corner surfaces are affected by the impact stress of water flow. Furthermore, changes in the water flow state caused by opening and closing valves or using water equipment can create turbulence, leading to hydraulic instability within the pipe and resulting in strong impacts on the pipes and fittings, causing damage. Simultaneously, the presence of water vapor in pipes is common. Under high temperatures, water vapor mixing easily occurs. Studies have shown that the impact of water vapor mixtures is more harmful than that of liquid water, and the probability of pipe bursts due to pressure buildup of gas within the pipe is higher. Therefore, timely removal of gas from the pipe is essential. Thus, pipe fittings play a crucial role, as they are the most subjected to water flow impacts. Currently available pipe fittings are all basic types with simple structures, serving only to guide water flow without any preventative features. When the water flow is altered, they are prone to rupture due to increased pressure, and the change in flow direction generates significant water pressure feedback, potentially causing pipe bursts. Therefore, there is an urgent need to design a dedicated pressure-bearing PPR device for burst-proof pipes to address these issues. Summary of the Invention

[0004] To address the aforementioned issues, this invention provides a pressure-bearing PPR device specifically for explosion-proof pipes. It features high pressure resistance, hydraulic diversion function, anti-turbulence and venting design, convenient installation, simple structure, easy operation and maintenance, wide applicability, and reliable safety.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A pressure-bearing PPR device for explosion-proof pipes includes a main body, a diversion channel, an exhaust device, and a pressure-bearing structure. The main body has a 90-degree arc structure and includes a main channel, a first socket, and a second socket. The diversion channel is connected to the main body and includes an upper diversion channel and a lower diversion channel that are connected to the main channel. The first socket is connected to the lower diversion channel, and the second socket is connected to the upper diversion channel. A pressure-bearing structure and an exhaust device are also provided in the direction away from the main body of the diversion channel. The upper and lower diversion channels are not interconnected.

[0007] Furthermore, the exhaust device is positioned above the diversion channel, at an angle of 45° upwards.

[0008] Furthermore, the exhaust device includes an exhaust body, a cover, a gasket, and a long spring. The exhaust body and the cover are both made of PPR material and are connected by a threaded connection. The gasket is placed between the exhaust body and the cover, and an exhaust port is opened in the middle of the cover and the gasket. A long spring is installed inside the exhaust body, and pressure sleeves and limiting strips are provided at both ends of the long spring for limiting and fixing.

[0009] Furthermore, a gap is provided between the pressure sleeve and the inner wall of the exhaust body, allowing the gas to enter through the gap when the internal gas pressure increases, thus pressurizing the pressure sleeve and compressing the long spring to cause the pressure sleeve to shift.

[0010] Furthermore, there are two exhaust devices, which are respectively installed on the upper and lower diversion channels.

[0011] Furthermore, the pressure-bearing structure includes a pressure-bearing body and an anti-vortex structure and a pressure-bearing body within the pressure-bearing body. The anti-vortex structure is used to rectify the water flow and eliminate turbulence; the pressure-bearing body is used to reduce the impact pressure of the water flow.

[0012] Furthermore, the anti-vortex structure adopts an arc-shaped concave channel design, with multiple protruding anti-vortex blocks around the channel wall. The anti-vortex blocks form a flow channel, with an arc shape at the upper end and a straight line at the lower end, to adjust the direction of water flow.

[0013] Furthermore, the pressure-bearing body includes a pressure-bearing plate and a short spring. The pressure-bearing plate is snapped into the pressure-bearing body, and one end of the short spring is connected to the pressure-bearing plate, while the other end is connected to the bottom surface of the pressure-bearing body.

[0014] Furthermore, there are two pressure-bearing structures, which are respectively installed on the upper and lower diversion channels, and the pressure-bearing body is a bottom-sealed structure.

[0015] Preferably, the angle of the main channel (13) is set at 45°.

[0016] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0017] (1) The system is stable overall, automatically adjusts, is highly flexible, and has a long lifespan;

[0018] (2) Easy to install, welded connection, convenient operation, and high reliability;

[0019] (3) It has strong pressure bearing capacity and can be installed in one or more places to increase the pressure bearing range and minimize the occurrence of pipe bursts;

[0020] (4) It has the function of distinguishing between air pressure and water pressure, so that it can play its maximum role in harsh environments;

[0021] (5) Anti-vortex design reduces damage to other areas and maximizes pressure-bearing capacity;

[0022] (6) The whole is made of PPR raw materials, with integrated injection molding process and secondary lathe processing, which is low cost, safe and environmentally friendly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the explosion-proof pipe-specific pressure-bearing PPR device of the present invention;

[0024] Figure 2 for Figure 1 Partial structural cross-section diagram-1;

[0025] Figure 3 for Figure 1 Partial structural cross-section diagram -2;

[0026] Figure 4 for Figure 1 Partial structural cross-section diagram - 3;

[0027] Figure 5 This is a cross-sectional view of the exhaust structure of the present invention;

[0028] Figure 6 This is a water flow pressure distribution diagram according to an embodiment of the present invention;

[0029] Figure 7 This is a water flow distribution diagram according to an embodiment of the present invention;

[0030] Figure 8 This is a diagram illustrating the water flow trajectory according to an embodiment of the present invention.

[0031] In the diagram: 1. Main body; 11. First socket; 12. Second socket; 13. Main flow channel; 2. Diversion channel; 21. Lower diversion channel; 22. Upper diversion channel; 3. Exhaust device; 31. Cover; 32. Gasket; 33. Pressure sleeve; 34. Exhaust body; 35. Long spring; 36. Limiting strip; 4. Pressure-bearing structure; 41. Pressure-bearing body; 42. Anti-vortex structure; 421. Anti-vortex block; 43. Pressure-bearing body; 431. Pressure plate; 432. Short spring. Detailed Implementation

[0032] The technical solution of the present invention will be clearly and completely described below through embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] like Figure 1-5 As shown, the present invention provides a pressure-bearing PPR device for explosion-proof pipes with high pressure resistance, hydraulic diversion function, anti-turbulence and venting design, convenient overall installation, simple structure, convenient operation and maintenance, wide range of applications, and safe and reliable function.

[0034] 1. The specific structure is as follows:

[0035] This device consists of a main body 1, a diversion channel 2, an exhaust device 3, and a pressure-bearing structure 4;

[0036] The main body 1 structure mainly adopts a 90° arc structure design, with rounded inner channels without right angles, which can effectively reduce water flow impact, increase flow rate, and guide the direction of water flow; including the main channel 13, the first socket 11, and the second socket 13.

[0037] The diversion channel 2 is connected to the main body 1 and is divided into an upper diversion channel 22 and a lower diversion channel 21. The two channels are connected to the main channel 13, but the two channels do not affect each other. The first socket is connected to the lower diversion channel, and the second socket is connected to the upper diversion channel. The main functions are twofold: first, it serves as a water pressure buffer channel at one end; second, it guides the water pressure and flow towards the pressure-bearing body when water hammer, backflow, or instantaneous water pressure impact occurs.

[0038] The exhaust device 3 is mainly located above the diversion channel 2, designed at a 45° upward angle. There are two of them. Since the two diversion channels 2 are not connected to each other, a dual exhaust design is adopted to effectively reduce the internal water and air pressure. The 45° angled structure also allows the pipe fittings to be used in a wider range of environments and can be installed at multiple angles without affecting the function.

[0039] The pressure-bearing structure 4 includes a pressure-bearing body 41, which mainly contains two parts: an anti-vortex structure 42 and a pressure-bearing body 43. After passing through the diversion channel 2, the water pressure is reduced due to the diversion, but the water flow impact causes turbulence, resulting in chaotic hydraulics and strong impact. Therefore, an anti-vortex design is implemented to rectify the turbulent water, ensuring a consistent and regular hydraulic direction, which helps to mitigate the hydraulic force. Furthermore, the rectification prevents the surrounding pipe walls from cracking due to strong impact. Simultaneously, guiding the water flow to the pressure-bearing plate 431 maximizes the absorption of water pressure, thereby reducing hydraulic impact and preventing pipe bursts.

[0040] 2. Structural Principle:

[0041] The product mainly includes three major structures: flow channel structure, exhaust structure, and pressure-bearing structure.

[0042] The overall process mainly adopts a one-piece injection molding process, followed by secondary processing and installation to form the complete product; Note: There is a certain direction for installation, and it is strictly forbidden to place the exhaust pipe downwards during installation.

[0043] Flow channel structure: mainly includes a main channel 13 and branch channels. The main channel 13 is used to change the general direction of water flow, while the branch channels guide the incoming and feedback water flow, including an upper branch channel 22 and a lower branch channel 21. The main channel angle is designed to be 45°. Tests show that at 45°, the water flow velocity and direction guidance is the fastest, higher than other bending angles. All structural materials are PPR, and due to its role in guiding water flow, it has been thickened, exceeding current industry standards. The main channel 13 adopts a large arc design. Multiple experimental results show that when water flows through, centrifugal force is generated, separating the gas in the water from the water flow, which then enters the branch channels, thus achieving the effect of water-gas separation.

[0044] Exhaust structure: mainly composed of exhaust body 34, cover 31, gasket 32, and long spring 35 for buffering. The exhaust body 34 and cover 31 are both made of PPR material and are connected by threaded joints. The gasket 32 ​​is made of EPDM rubber. Both the cover 31 and the gasket 32 ​​have air vents in the middle. The exhaust body 34 contains a long spring 35, which is fixed by a pressure sleeve 33 and a limiting strip 36. Under normal conditions, the long spring 35 supports the pressure sleeve 33, holding it against the gasket 32. During operation, after the gas-water mixture passes through the diversion channel, the gas rises and separates, entering the exhaust body 34. After accumulating a certain pressure, the pressure increases and enters through the gap between the exhaust body 34 and the pressure sleeve 33, applying pressure to the pressure sleeve 33 from the outside of the cavity. This compresses the spring, causing the pressure sleeve 33 to shift, thus expelling the water vapor through the outlet. After the gas is expelled, the pressure decreases, the long spring 35 recovers its elasticity, causing the pressure sleeve 33 to move upwards, returning to its original closed state. The advantages of this function are structural stability, preventing foreign objects or gas from entering the pipe, and automatic adjustment based on the water vapor volume, greatly enhancing its flexibility and lifespan.

[0045] The pressure-bearing structure 4 mainly comprises two parts: an anti-vortex structure 42 and a pressure-bearing body 43. The anti-vortex structure 42 adopts an arc-shaped concave channel design, with multiple protrusions around the channel wall, namely anti-vortex blocks 421. The anti-vortex blocks 421 form a flow-rectifying channel, with an arc shape at the upper end and a straight shape at the lower end. When water passes through, the flow direction is adjusted to achieve a consistent flow direction, thus guiding the water pressure and avoiding turbulence. Experimental data shows that it has a good rectification effect at hydraulic pressures of 5 kg, 10 kg, and 15 kg, with a rectification rate of 100%, meaning that turbulence can be eliminated for water flows below 15 kg. The pressure-bearing body 43 includes a pressure plate 431 and a short spring 432. After the hydraulic direction is adjusted, the feedback pressure impacts the pressure plate 431, causing displacement of the pressure plate 431, which in turn compresses the short spring 432, indirectly absorbing water pressure and reducing pressure.

[0046] After testing, taking 0.5 MPa as an example, after impacting the pressure plate, it can absorb 0.42 MPa of water pressure. That is, the impact pressure inside the device, including the pressure-bearing body 43 and the inner wall of the diversion channel 2, is reduced to 0.08 MPa, with a significant pressure reduction effect, greatly improving the pressure-bearing capacity. At the same time, after depressurization, the pressure plate 431 rebounds and returns to its initial state.

[0047] Experimental data:

[0048]

[0049] The pressure, flow rate, and flow trajectory distribution of the water flow are shown in the diagram. Figure 6-8 As shown.

[0050] Conclusion: The flow velocity has little impact, the pressure resistance is high, the turbulence is significantly regular, and the pressure reduction effect is significant.

[0051] Operating principle of the device of this invention:

[0052] When the water flow changes—either a sudden increase in positive or negative pressure—centrifugal force is generated in the main flow channel, causing water-air separation and ensuring the water flow is free of water vapor. The water then enters the branch channels (different branch channels correspond to different feedback flow directions), where water vapor enters the exhaust body. The compressed long spring discharges the vapor from the outlet, while the water flows through the anti-vortex rectification channel, where its direction is adjusted. The pressure-bearing body absorbs and releases the high water pressure. Through this series of mechanisms, the air and water pressures are absorbed, providing pressure resistance and preventing pipe bursts.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A pressure-bearing PPR device specifically for explosion-proof pipes, characterized in that, The system includes a main body (1), a diversion channel (2), an exhaust device (3), and a pressure-bearing structure (4). The main body (1) is a 90-degree arc structure, including a main channel (13), a first socket (11), and a second socket (12). The diversion channel (2) is connected to the main body (1) and includes an upper diversion channel (22) and a lower diversion channel (21) connected to the main channel (13). The first socket (11) is connected to the lower diversion channel (21), and the second socket (12) is connected to the upper diversion channel (22). A pressure-bearing structure (4) and an exhaust device (3) are also provided in the direction away from the main body (1) of the diversion channel (2). The upper diversion channel (22) and the lower diversion channel (21) are not connected to each other. The exhaust device (3) includes an exhaust body (34), a cover (31), a gasket (32), and a long spring (35). The exhaust body (34) and the cover (31) are both made of PPR material and are connected by a threaded connection. The gasket (32) is placed between the exhaust body (34) and the cover (31). Both the cover (31) and the gasket (32) have an exhaust port. The exhaust body (34) is equipped with a long spring (35). The two ends of the long spring (35) are equipped with pressure sleeves (33) and limiting strips (36) for limiting and fixing. The pressure-bearing structure (4) includes a pressure-bearing body (41) and an anti-vortex structure (42) and a pressure-bearing body (43) within the pressure-bearing body (41). The anti-vortex structure (42) is used to rectify the water flow and eliminate turbulence; the pressure-bearing body (43) is used to reduce the impact pressure of the water flow. The anti-vortex structure (42) adopts an arc-shaped concave channel design. There are multiple protruding anti-vortex blocks (421) around the channel wall. The anti-vortex blocks (421) form a flow channel. The upper end is arc-shaped and the lower end is straight, which adjusts the direction of water flow. The pressure-bearing body (43) includes a pressure plate (431) and a short spring (432). The pressure plate (431) is snapped into the pressure-bearing body (41). One end of the short spring (432) is connected to the pressure plate (431), and the other end is connected to the bottom surface of the pressure-bearing body (41).

2. The pressure-bearing PPR device for explosion-proof pipes according to claim 1, characterized in that, The exhaust device (3) is located above the diversion channel (2) and is set at an angle of 45° upwards.

3. The pressure-bearing PPR device for explosion-proof pipes according to claim 1, characterized in that, A gap is provided between the pressure sleeve (33) and the inner wall of the exhaust body (34). When the internal gas pressure increases, it can enter through the gap and apply pressure to the pressure sleeve (33), thereby compressing the long spring (35) and causing the pressure sleeve (33) to move, thus completing the exhaust.

4. The pressure-bearing PPR device for explosion-proof pipes according to claim 2, characterized in that, There are two exhaust devices (3), which are respectively installed on the diversion channels (2) corresponding to the upper diversion channel (22) and the lower diversion channel (21).

5. The pressure-bearing PPR device for explosion-proof pipes according to claim 2, characterized in that, The pressure-bearing structure (4) consists of two parts, which are respectively installed on the diversion channels (2) corresponding to the upper diversion channel (22) and the lower diversion channel (21). The pressure-bearing body (41) is a bottom sealing structure.

6. The pressure-bearing PPR device for explosion-proof pipes according to claim 1, characterized in that, The angle of the main channel (13) is set at 45°.

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