A device for air pressure and water pressure sudden rise damage

Abstract

The application discloses a device for pressure water pressure sudden rise damage, and a reverse U-shaped elbow structure fixedly connected with a pipeline. Two sides of the reverse U-shaped elbow structure are respectively provided with damage structures. The damage structure comprises flanges arranged at two ends of an outer pipe, a corrugated pipe buffer assembly concentrically sleeved with the outer pipe, and an annular space formed between the outer pipe and the corrugated pipe. The top of the annular space can form a compressed air bag. When water pressure suddenly rises along the water flow, the compressed air spring can automatically form a buffer. The corrugated pipe buffer assembly can cooperate with the compressed air spring when moving along the water flow direction, and can cooperate with the self-adaptive suction force generated by the automatically formed negative pressure cavity when moving against the water flow direction. Meanwhile, the water flow generates a backflow effect, the corrugated pipe buffer assembly generates a damping effect, the flow velocity is reduced, the water flow impact force is reduced, and thus the pipeline elbow connecting portion is protected. The water hammer phenomenon is solved, and the pipeline elbow connecting portion is prevented from being damaged due to the water pressure sudden rise.

Description

Technical Field

[0001] This invention relates to a water hammer mitigation device, specifically a device that does not rely on external power and can mitigate both single-phase and two-phase water hammer phenomena in natural circulation systems, for damage caused by sudden increases in air and water pressure. Background Technology

[0002] Existing gas and liquid transmission pipelines, sewage pipes, waste discharge pipes, exhaust pipes and drainage pipes are usually directly connected between adjacent pipes through joints. This connection method has the following defects: (1) Pipes are prone to thermal expansion and contraction due to temperature changes. If they are directly connected and fixed, they are prone to breakage due to thermal expansion and contraction, or leakage of water or gas. (2) When connecting adjacent pipes, they need to be aligned and installed, which requires high installation standards and is time-consuming and labor-intensive. (3) Water hammer is prone to occur. For example, when sewage enters the sewer pipe, it falls along the pipe and is affected by gravity. The acceleration increases and increases, which will generate a certain pressure, causing the pipe to break. In particular, the loss and damage at the bend connection are serious. Existing auxiliary connection devices for drainage pipes typically connect the pipes by inserting sleeves at the ends. This connection method is not secure and is prone to breakage under high water pressure, affecting construction efficiency. During drainage, the water flow is large (i.e., water hammer). When water rushes into the pipe, it generates a water hammer effect, which can cause significant impact on bends in the drainage pipe, reducing the pipe's lifespan. Traditional auxiliary connection devices for water pipes do not solve this problem effectively, or at least not adequately address it, resulting in low practicality. In summary, the water hammer effect is a phenomenon that occurs when a fluid passage is suddenly closed. This phenomenon is also known as fluid hammer. Currently, there are two problems in the field of building water supply and drainage pipe connection technology: first, bends are susceptible to water hammer impact and damage; second, the connection method between pipe segments at bends is prone to breakage under high water pressure. For example, in booster pump systems, existing technologies typically install safety valves on the pipes to prevent water hammer damage to pipelines and equipment. However, these safety valves require a certain amount of time to open. If the water hammer reaches the booster pump before the valve opens, a water hammer accident may occur. Furthermore, the large fluctuations in water flow in building water supply and drainage pipes, coupled with frequent valve opening and closing, lead to water hammer damage, especially at bends and connections. This high-frequency vibration can easily damage precision instruments, significantly impacting the accuracy of flow meters and other measuring instruments, resulting in substantial economic losses. Therefore, we propose a device and method to prevent damage caused by sudden pressure increases at bends in building water supply and drainage pipes to address the aforementioned problems.

[0003] There are some damaging devices in the existing technology, but their manufacturing and assembly processes are complex, and they are difficult to install, use and maintain. The processing cost of the devices is high. In addition, the existing waterproof hammer devices reduce the pipe diameter, reduce the flow rate, increase the flow resistance and cause serious pressure loss, which greatly affects the flow capacity and cannot guarantee the flow rate. They also generate noise during use.

[0004] Existing water hammer elimination or mitigation devices have the following disadvantages: (1) They have complex components such as moving parts or springs, which are unreliable and unsustainable; (2) They have high flow resistance and rely on external power or power supply; (3) They can solve both single-phase water hammer and two-phase water hammer (such as water phase and gas phase) in natural circulation systems at the same time, which is difficult, especially for complex water hammer phenomena such as two-phase water hammer where the water hammer interface is uncertain and constantly changing. Summary of the Invention

[0005] In order to overcome at least one of the defects described in the prior art, the present invention provides a device with a simple structure and good effect for damage caused by sudden increase in air pressure or water pressure.

[0006] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions:

[0007] A device for preventing damage caused by sudden increases in air or water pressure is provided at the connection of two pipes. The device is inverted "U" shaped and includes a first pipe section, a second pipe section, a first bend, a second bend, a third bend, and a fourth bend. The first and second bends are respectively connected to the inlet and outlet ends of the first pipe section, and the third and fourth bends are respectively connected to the inlet and outlet ends of the second pipe section. The second bend is connected to the third bend. The first pipe section is the damage-causing structure. The damage-causing structure includes an outer pipe, flanges connected to both ends of the outer pipe, and a bellows buffer assembly concentrically fitted with the outer pipe. The bellows buffer assembly is fixedly connected to the flange located at the outlet end of the outer pipe. The bellows buffer assembly consists of a bellows and a damping baffle. The damping baffle is funnel-shaped, with the tip of the funnel facing the center of the inlet end of the first pipe section. The bottom of the annular space between the outer pipe and the bellows near the outlet end of the outer pipe is sealed, thus forming a closed chamber with the opening facing the inlet end. Multiple circular holes are provided on the damping baffle. These circular holes, also known as damping holes, serve to dampen and dissipate energy. The size and arrangement of these circular holes are related to the flow rate and velocity, and can be designed according to the specific values ​​of the flow rate and velocity in the pipe.

[0008] With this configuration, when water or air enters from the inlet, the annular space formed between the outer pipe and the inner corrugated pipe creates a congestion. This congestion occurs because the water contains volatile gases, the damping baffles cut the bubbles and generate a large number of small bubbles, and the water itself carries a small amount of dissolved air. As a result, the air gathers at the top of the annular space, forming a sealed air bladder. This air bladder, when compressed, becomes a compressed air bladder, which can be used to efficiently buffer sudden increases in water pressure. The most significant feature of this air-cushioned buffer is that the rebound force of the compressed airbag is opposite in direction to the water hammer impact force. Therefore, this compressed airbag, also known as a "compressed air spring," is highly efficient at buffering water hammer. By concentrically mounting a bellows buffer assembly and flange on the outer pipe, the compressed airbag within the annular space formed between the outer pipe and the bellows generates a rebound effect, causing the water flow to flow back and consume its own potential energy. In other words, by reducing the potential energy of the water flow impact itself, the impact power of the water flow is weakened, thereby reducing the water hammer effect at the bends of the drainage pipe. The combined pressure buffering of the airbag and the bellows results in a significant energy dissipation and water hammer reduction effect. Moreover, since the airbag encloses the bellows buffer assembly, it helps protect the bellows buffer assembly from damage.

[0009] Preferably, the second pipe section is a damage-causing structure; in the damage-causing structure of the second pipe section, the funnel tip of the damping baffle faces the center of the inlet end of the second pipe section. That is, both the first and second pipe sections are set as damage-causing structures, so that the two damage-causing structures work together. In this way, the first damage-causing structure first bears the impact of water hammer pressure and can intercept about 3 / 4 of the water hammer pressure. The remaining 1 / 4 of the water hammer pressure is borne by the device on the left. The two share the water hammer pressure and thus effectively avoid water hammer pressure damage to the pipeline.

[0010] Optionally, the holes on the damping diaphragm are multiple circular holes of the same size and evenly spaced.

[0011] Optionally, the holes on the damping plate are multiple circular holes of the same size arranged on circumferences of different radii with the center as the center.

[0012] Optionally, the holes on the damping plate are multiple circular holes of different sizes arranged on circumferences of different radii with the center as the center.

[0013] Optionally, the damping plate has a central circular hole, with the outermost circular holes increasing in size circumference, and the outermost circular holes being spaced out by alternating large and small sizes.

[0014] Specifically, a damping baffle is installed at the reduced-diameter inlet of the bellows. The inner diameter of the damping baffle's ring is slightly larger than the outer diameter of the bellows inlet. During installation, pins are inserted through four holes on the ring's perimeter, and the baffle is then welded to the bellows inlet. When water flows from the inlet to the outlet through the damping baffle, its conical surface and holes divert and drain the water. This ensures uniform stress on the bellows and cuts air bubbles in the water, facilitating the formation of an air pocket within the annular space. Simultaneously, an air cavity is formed at the top of the inverted U-shaped bend. This sealed air pocket acts as a buffer under pressure. In summary, through the efficient buffering effect of the compressed air pocket, the absorption of water hammer energy by the elastic deformation of the bellows, and the energy dissipation through the damping effect of the damping baffle, the water flow is reduced by a backflow effect, thus minimizing the water hammer effect's impact on the bends of the drainage pipe.

[0015] Preferably, the bellows buffer assembly is integrally formed with the flange at the outlet end of the outer pipe. This allows for pre-configuration before installation, reducing the need for screws and other fixing components.

[0016] Preferably, the first bend, the second bend, the third bend, and the fourth bend have the same shape and size.

[0017] By using four identical pipe bends to set up this inverted U-shaped bend structure, it can prevent the connection of the bend section from being damaged due to thermal expansion and contraction, thereby preventing water leakage, air leakage and other phenomena. It can also compensate for installation position deviations and water hammer phenomena. Specifically, it has the following functions: First, it can regulate expansion and contraction: The bend can be used to regulate the expansion between the first and second pipe sections. Because the bend is a curved structure, when the first and / or second pipe sections expand or contract, it will be adjusted through the bend, thereby preventing the pipe sections from breaking or being damaged due to expansion and contraction. Second, it can compensate for installation position deviations: By setting up the bend, it is not necessary to consider whether the first and second pipe sections are aligned during installation. Third, it can prevent water hammer: When the flow velocity changes suddenly, by setting this device on both sides of the inverted U-shaped bend structure, or by setting the inverted U-shaped bend structure before and after the bend, the compressed air bladder formed inside the device, through the elastic contraction of the corrugated pipe, and through the suction effect generated by the automatically formed negative pressure chamber, buffers, dampens and dissipates energy, reduces the water flow velocity, reduces the water flow impact force, protects the bend body and bend connection, and extends its service life.

[0018] Preferably, the bellows buffer assembly is made of 304 stainless steel.

[0019] Specifically, the bellows can be made of materials with elastic deformation characteristics, preferably 304 stainless steel, which deforms and contracts under pressure and then elongates, i.e., undergoes contraction and elongation motion. The kinetic energy of the fluid flowing along the channel is converted into the energy of the pressure wave. In a straight pipe, the pressure wave moves longitudinally along the channel; however, if the pipe is curved, the oscillation wave will bounce back from the wall. In a curved channel, the pressure wave will eventually propagate along the channel, and the time required to travel along the pipe may increase. Due to the high frequency of water hammer, the oscillation wave or transient reverse response caused by the "water hammer" effect will be directly applied to the bellows buffer assembly, causing the vibration frequency and direction of the two bellows buffer assemblies to be not completely consistent, or even opposite to each other. Therefore, they inhibit each other, and the damping effect they produce is relatively large, which can quickly absorb and dissipate the impact energy of a sudden increase in air or water pressure.

[0020] The present invention provides a device for preventing damage caused by a sudden increase in air or water pressure, which has the following beneficial effects:

[0021] 1. When backflow water hammer occurs in the drain pipe, for the damaged structure on the right side of the inverted U-shaped bend, the negative pressure cavity formed by the annular space between the outer pipe and the corrugated pipe exerts an upward suction force on the water at the corrugated pipe outlet, which helps to mitigate the hydraulic impact caused by the sudden increase in water pressure. Whether it is a sudden increase in water pressure in the forward flow or a water flow impact caused by the reverse flow, the corrugated pipe buffer components inside the anti-sudden water pressure rise device set on both sides of the inverted U-shaped bend structure of this patent can cooperate with the so-called "compressed air spring" in the sealed air cavity when moving in the direction of water flow, and cooperate with the adaptive suction force generated by the negative pressure cavity automatically formed in the annular space when moving in the direction of water flow, so as to cause the water flow to backflow and reduce the water flow.

[0022] 2. During use, after the valve is opened, the water flows in from the bottom through the inlet at the bottom of the first damaging structure (the one on the right). The damping baffle at the lower inlet of the bellows is located at the center of the bottom, close to the inlet, forming a water passage cavity. As the receiving component of the water flow impact, its turbulent blunt surface can effectively guide the high-speed impacting water, facilitating the water to enter the annular space and compress the air sealed inside. At the same time, the perforated structure on the damping baffle can cut the air bubbles in the water, which helps to make the flow at the bellows inlet more regular. The water and air mixed flow on the wrinkles of the inner wall of the bellows can easily generate a greater thrust. Meanwhile, the non-perforated part of the damping baffle can generate a thrust with the help of the water flow impact, which can assist in the contraction direction of the bellows, making the bellows compressed and storing energy to eliminate hammer. The damping baffle fully utilizes its damping effect; in addition, the corrugated pipe inlet has a large flow area, and the flow stream enters the corrugated pipe along the preset central axis, resulting in low flow resistance and thus not affecting the medium flow capacity, ensuring the flow rate.

[0023] 3. The damage-causing structure and its inverted U-shaped bend structure of this patent can be used as a novel post-pump water hammer device. In real life, modern urban gas and water systems cannot function without air pumps and water pumps. However, these pumps are prone to malfunctions for various reasons, leading to air hammers and water hammers in the pipelines, causing damage to pipes and equipment. Existing water hammer elimination devices generally cannot effectively block or eliminate water hammers in a timely manner, resulting in insufficient efficiency and poor performance, still damaging the pump power equipment. Furthermore, these devices are not easily reusable. Water hammer phenomena are unavoidable when traditional power sources transport fluids. The cause of pressure waves and the factors affecting their magnitude are sudden changes in air and water flow velocity, which is the fundamental cause of air hammers and water hammers. Whenever the water flow velocity changes, the system pressure inevitably changes. It is precisely the blocking effect of the check valve that causes the typical "pump stop water hammer" phenomenon. The closure of the check valve causes a significant change in the water flow velocity, thus generating dangerous pressure fluctuations. Although methods such as slow closure or two-stage shutdown have been recognized for eliminating water hammer for a long time, especially in domestic practical applications, their applicability still needs to be discussed. This patented device and structure can effectively address the problem of "water hammer during pump shutdown." By combining a device to resist sudden water pressure increases with an inverted U-shaped structure, it employs a method of creating a sealed air chamber by incorporating a corrugated pipe inside the pipe, using compressed air for buffering, and using the damping effect of the corrugated pipe buffer assembly. This efficiently buffers and dissipates energy from the high pressure of the pipe flow during pump shutdown, better protecting the centrifugal pump from pressure damage and preventing the loosening of pipe fasteners due to vibration in the delivery pipeline, resulting in significant economic benefits.

[0024] 4. The damage-causing structure of this patent is an integrally formed assembly of the bellows, damping baffle and flange, which avoids the use of conventional screws for locking, making assembly extremely convenient, while also providing good fixing effect and low cost; by setting flanges at both ends of the outer pipe, the device can be firmly installed on both sides of the inverted U-shaped bend structure and is easy to disassemble.

[0025] 5. This patent is also applicable to the prevention of air hammer in gas pipelines. It can compensate for the mutual displacement between the pipeline and the connection ends of equipment such as flow meters, absorb vibration energy, and play a role in shock absorption.

[0026] 6. This damaging structure is simple and compact, with no moving parts or vulnerable components. It is corrosion-resistant, and all components are connected by quick-connect fittings using four identical pipe elbows, which reduces costs and facilitates installation and disassembly. Flange connections are easy to implement, result in a neat and aesthetically pleasing appearance, provide good fixation, are low-cost, and are easy to promote and apply. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of a device for dealing with damage caused by a sudden increase in air or water pressure, as proposed in this invention.

[0029] Figure 2 This is a schematic diagram of the damage-causing structure proposed in this invention;

[0030] Figure 3 This is a front view of the damping diaphragm proposed in this invention;

[0031] Figure 4 This is a bottom view of the damping diaphragm proposed in this invention;

[0032] Figure 5 This is a 3D view of the damping diaphragm proposed in this invention;

[0033] Figure 6 This is a 3D view of the damping diaphragm proposed in this invention;

[0034] In the diagram: First pipe section 1, Second pipe section 2, First bend 3, Second bend 4, Third bend 5, Fourth bend 6, Outer pipe 7, Flange 8, Bellows 9, Damping diaphragm 10. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-6This invention provides a technical solution: a device for preventing damage caused by a sudden increase in air or water pressure, used at the connection of two pipes. The device for preventing damage caused by a sudden increase in air or water pressure is inverted "U" shape and includes a first pipe section 1, a second pipe section 2, a first bend 3, a second bend 4, a third bend 5, and a fourth bend 6. The first bend 3 and the second bend 4 are respectively connected to the inlet and outlet ends of the first pipe section 1; the third bend 5 and the fourth bend 6 are respectively connected to the inlet and outlet ends of the second pipe section 2; the second bend 4 is connected to the third bend 5. The first pipe section 1 is a damage-causing structure; the damage-causing structure includes an outer pipe 7, flanges 8 connected to both ends of the outer pipe 7, and a bellows 9 buffer assembly concentrically fitted with the outer pipe 7; the bellows 9 buffer assembly is fixedly connected to the flange 8 located at the outlet end of the outer pipe 7; the bellows 9 buffer assembly consists of a bellows 9 and a damping baffle 10; the damping baffle 10 is funnel-shaped; the tip of the funnel of the damping baffle 10 faces the center position of the inlet end of the first pipe section 1; the bottom of the annular space between the outer pipe 7 and the bellows 9 near the outlet end of the outer pipe 7 is sealed; the damping baffle 10 is provided with multiple holes.

[0037] Furthermore, the second pipe section 2 is a damage-causing structure; in the damage-causing structure of the second pipe section 2, the funnel tip of the damping baffle 10 faces the center position of the inlet end of the second pipe section 2.

[0038] Optionally, the damping diaphragm 10 holes are multiple circular holes of the same size and evenly spaced.

[0039] Optionally, the holes on the damping plate 10 are multiple circular holes of the same size arranged on circumferences of different radii with the center as the center.

[0040] Optionally, the holes on the damping plate 10 are multiple circular holes of different sizes arranged on circumferences of different radii with the center as the center.

[0041] Optionally, the holes on the damping baffle 10 are a central circular hole, with the outermost circular holes increasing in size according to the circumference, and the outermost circular holes are arranged with alternating large and small holes.

[0042] Furthermore, the bellows 9 buffer assembly is integrally formed with the flange 8 at the outlet end of the outer pipe 7.

[0043] Furthermore, the first bend 3, the second bend 4, the third bend 5, and the fourth bend 6 are all the same in shape and size.

[0044] Furthermore, the bellows 9 buffer assembly is made of 304 stainless steel. The bellows 9 buffer assembly can freely expand and contract vertically within the outer tube 7, serving as an elastic element to resist sudden increases in water pressure. Under water hammer pressure, the bellows 9 buffer assembly deforms, with the deformation length controlled within 50mm, and is made of highly elastic 304 stainless steel with a thin wall. When a water hammer effect occurs, the deformation and energy storage of the bellows 9, combined with the elastic buffering of the sealed air cavity inside the annular space, forms a composite elastic buffering effect. This, along with the damping effect of the damping baffle 10, counteracts the water hammer pressure.

[0045] This patented inverted U-shaped bend structure is installed at the front end of the bend connection of the protected building water supply and drainage pipe. During installation, the two ends of the inverted U-shaped bend structure can be connected via flanges 8 or threads. In use, after the valve is opened, water flows in through the inlet at the bottom of the first damaging structure (i.e., the damaging structure on the right in the attached diagram). The water in the middle, after being drained by the damping baffle 108, enters the interior of the bellows 9, while the water at the edges directly enters the annular space, forming a sealed air pocket within the annular space. Because the water pressure is at its maximum at this time, the bellows 9 contracts under pressure to store energy. Since multiple folds are distributed on the bellows 9, the area of ​​water flow action is increased, thus increasing the water flow thrust. The direction of the water flow thrust is consistent with the contraction direction of the bellows 9, thus maximizing the absorption of water pressure impact within the pipe. The greater the water flow thrust, the more energy the corrugated pipe 9 stores upon contraction. On the other hand, the compressed air bladder, under pressure, also absorbs water hammer energy. When the valve at the end of the pipe suddenly closes, the water in the pipe stops flowing. At this time, the elastic body of the corrugated pipe 9 releases its elastic potential energy and quickly returns to its original position. Simultaneously, the compressed air inside the annular space expands, pushing the water in the annular space downwards, creating a water backflow effect and reducing the water flow velocity. This prepares for the impending water hammer phenomenon, and the timing of this preparation is perfect, avoiding a large impact of the water flow on the bends in the building's water supply and drainage pipes. At this time, both devices resisting sudden increases in water pressure function as intelligent adaptive water hammer prevention devices. The damaging structure on the right is more effective, while the damaging structure on the left is less effective, but their combined effect in preventing water hammer is significant. When a backflow impact occurs in the pipe, the two damaging structures switch roles, operating on the same principle as described above. In other words, the two devices in this patented inverted U-shaped bend structure can be used in series end-to-end in the pipeline, or installed head-to-head and tail-to-tail, to ensure that at least one device can form a compressed air chamber for buffering, thereby creating a backflow effect. The damping baffles 10 at the lower ends of the two corrugated pipes 9 can both play a damping role, reducing the water flow velocity, consuming the water flow potential energy, and greatly reducing the impact force of water hammer. That is, both the left and right damaging structures play the role of an intelligent adaptive water hammer prevention device.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for preventing damage caused by a sudden increase in air or water pressure, used at the connection of two pipes, characterized in that, The device for preventing damage caused by sudden increases in air and water pressure is in the shape of an inverted "U" and includes a first pipe section (1), a second pipe section (2), a first bend (3), a second bend (4), a third bend (5), and a fourth bend (6); the first bend (3) and the second bend (4) are respectively connected to the inlet and outlet ends of the first pipe section (1); the third bend (5) and the fourth bend (6) are respectively connected to the inlet and outlet ends of the second pipe section (2); the second bend (4) is connected to the third bend (5); the first pipe section (1) is the damage-causing structure; the damage-causing structure includes an outer pipe ( 7) Flanges (8) connected to both ends of the outer pipe (7), and a bellows (9) buffer assembly concentrically fitted with the outer pipe (7); the bellows (9) buffer assembly is fixedly connected to the flanges (8) at the outlet end of the outer pipe (7); the bellows (9) buffer assembly is composed of a bellows (9) and a damping baffle (10); the damping baffle (10) is funnel-shaped; the tip of the funnel of the damping baffle (10) faces the center of the inlet end of the first pipe section (1); the bottom of the annular space between the outer pipe (7) and the bellows (9) near the outlet end of the outer pipe (7) is sealed; the damping baffle (10) is provided with multiple circular holes. When in use, after the valve is opened, the water flows in through the inlet at the bottom of the first damaging structure. The water in the middle enters the corrugated pipe (9) after being drained by the damping baffle (10), and the water at the edge directly enters the annular space, causing the air inside the annular space to form a sealed air bladder. On the one hand, the corrugated pipe (9) is compressed and stores energy, and on the other hand, the sealed air bladder is compressed and forms a compressed air bladder, which also absorbs water hammer energy. When the valve at the end of the pipeline is suddenly closed, the water in the pipeline stops flowing. At this time, the elastic body of the corrugated pipe (9) releases elastic potential energy and quickly returns to its original position. The compressed air inside the annular space also expands at the same time, pushing the water in the annular space downward, generating a water backflow effect and reducing the water flow speed.

2. The device for damage caused by a sudden increase in air or water pressure according to claim 1, characterized in that, The second pipe section (2) has the same damage-causing structure as the first pipe section (1); in the damage-causing structure of the second pipe section (2), the funnel tip of the damping baffle (10) faces the center position of the inlet end of the second pipe section (2).

3. The device for damage caused by a sudden increase in air or water pressure according to claim 2, characterized in that, The damping diaphragm (10) has multiple circular holes of the same size and evenly spaced.

4. The device for damage caused by a sudden increase in air or water pressure according to claim 2, characterized in that, The holes on the damping baffle (10) are multiple circular holes of the same size arranged on circumferences of different radii with the center as the center.

5. The device for damage caused by a sudden increase in air or water pressure according to claim 2, characterized in that, The damping diaphragm (10) has multiple circular holes of different sizes arranged on a circumference of different radii with the center as the center.

6. The device for damage caused by a sudden increase in air or water pressure according to claim 2, characterized in that, The damping baffle (10) has a central circular hole, and the outer circular holes increase in size according to the circumference. The outermost circular holes are arranged with alternating large and small holes.

7. A device for damage caused by a sudden increase in air or water pressure according to any one of claims 1-6, characterized in that, The corrugated pipe (9) buffer assembly is integrally formed with the flange (8) at the outlet end of the outer pipe (7).

8. A device for damage caused by a sudden increase in air or water pressure according to any one of claims 1-6, characterized in that, The first bend (3), the second bend (4), the third bend (5), and the fourth bend (6) are identical in shape and size.

9. A device for damage caused by a sudden increase in air or water pressure according to any one of claims 1-6, characterized in that, The corrugated pipe (9) buffer assembly is made of 304 stainless steel.

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