Water hammer eliminating device
By using a buffer device and guide rod limiter in the buffer pipe in the liquid pipeline system, combined with bypass pipe and valve control, the problem of water hammer damage to pipelines and water pumps is solved, achieving low-cost and efficient water hammer elimination.
Patent Information
- Application Number
- CN202520356403.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-03
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2035-03-03
AI Technical Summary
In existing technologies, the shock waves generated by the water hammer effect damage pipes and water pumps, and existing devices are costly, bulky, and complex to install.
A buffer device is used inside the buffer tube, including first and second springs and a blocking component. The deformation of the springs buffers the impact force of the water hammer effect, and the blocking component is stabilized by a guide rod and a limiting component. Combined with a bypass pipe and a valve to control the water flow, the impact of the impact force is reduced.
It effectively protects pipelines, reduces the impact of water hammer, and features a simple structure, low cost, and easy installation. It can be flexibly assembled and ensures the pump head.
Smart Images
Figure CN223622513U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of liquid pipeline system technology, and in particular to a water hammer elimination device. Background Technology
[0002] In liquid pipeline systems, a sudden power outage or a valve closing too quickly can generate reciprocating shock waves due to the inertia of the liquid flow. This causes the pipe walls to be stressed and generate noise, much like a hammer striking a pipe. This is known as the water hammer effect. The shock waves generated by the water hammer effect are essentially the residual energy of fluid power equipment (such as water pumps). Sometimes, the water hammer effect can generate significant forces, posing a risk of damaging pipes, valves, and water pumps.
[0003] However, existing technologies for devices to eliminate the effects of water hammer still have many problems. Utility Model Content
[0004] The technical problem solved by this utility model is to provide a water hammer elimination device that eliminates the effects of water hammer in pipelines, protects the pipelines, and reduces the cost and size of the water hammer elimination device.
[0005] To address the aforementioned problems, this utility model provides a water hammer elimination device, comprising: a buffer tube having a buffer cavity, the buffer tube extending along a first direction; a first connecting tube communicating with one end of the buffer tube; a second connecting tube communicating with the other end of the buffer tube; and a buffer device disposed within the buffer cavity, the buffer device comprising: a first spring extending along the first direction, one end of the first spring being fixedly connected to the inner wall of the buffer tube; a blocking member fixedly connected to the other end of the first spring; and a second spring extending along the first direction, one end of the second spring being fixedly connected to the inner wall of the buffer tube, and the other end of the second spring being fixedly connected to the blocking member; the first spring, the blocking member, and the second spring extending along the first direction, with the blocking member located between the first spring and the second spring.
[0006] Optionally, it further includes: a guide rod, which is along the first direction and fixed in the buffer cavity, and the guide rod passes through the blocking member, and the blocking member can slide back and forth along the guide rod.
[0007] Optionally, it also includes: a limiting member, which is fitted around the first spring, the blocking member and the second spring, and the inner diameter of the limiting member is adapted to the outer diameter of the first spring and the outer diameter of the second spring, respectively.
[0008] Optionally, the blocking element is a buoyancy ball, the outer diameter of which is smaller than the inner diameter of the buffer tube.
[0009] Optionally, the outer diameter of the buoyancy ball is 3 / 5 to 4 / 5 of the inner diameter of the buffer tube.
[0010] Optionally, the material of the buoyancy ball includes stainless steel or plastic.
[0011] Optionally, it also includes: a bypass pipe, one end of which is connected to the first connecting pipe, and the other end of which is connected to the second connecting pipe.
[0012] Optionally, it may also include: a pipeline valve, which is mounted on the bypass pipe and is used to control the opening and closing of the bypass pipe.
[0013] Optionally, the pipeline valves include: remote control valves or manual valves.
[0014] Optionally, the bypass pipe is arc-shaped.
[0015] Optionally, the first connecting pipe is provided with a first connecting flange at its end; the second connecting pipe is provided with a second connecting flange at its end.
[0016] Compared with the prior art, the technical solution of this utility model has the following advantages:
[0017] The water hammer elimination device of this utility model includes a buffer device disposed within the buffer pipe. The buffer device comprises a first spring, a second spring, and a blocking member fixedly connected between the first spring and the second spring. When the impact force generated by the water hammer effect acts on the blocking member, the blocking member causes one of the first spring and the second spring to compress and the other to stretch. The deformation of the first spring and the second spring buffers and dissipates the impact force generated by the water hammer effect, thereby reducing the impact of the water hammer effect and protecting the pipeline. Furthermore, the overall structure of the water hammer elimination device is relatively simple and practical, with low manufacturing cost. Its small size facilitates installation, and the device can be flexibly assembled according to the location of the water hammer effect during pump start-up and pump shutdown in the pipeline, simultaneously reducing the impact of the water hammer effect during both pump start-up and pump shutdown.
[0018] Furthermore, it also includes a guide rod, which is fixed within the buffer cavity along the first direction and passes through the blocking member. The blocking member can slide back and forth along the guide rod. By adding the guide rod, the blocking member can remain stable under the impact of water hammer, preventing it from shifting or swaying within the buffer cavity. This ensures that the blocking member transmits as much of the impact force as possible to the compression or tension direction of the first and second springs, thereby improving the buffering and stress-relief effect of the first and second springs against water hammer.
[0019] Furthermore, it also includes a limiting member, which is fitted around the first spring, the blocking member, and the second spring. The inner diameter of the limiting member is adapted to the outer diameter of the first spring and the outer diameter of the second spring, respectively. By configuring the limiting member so that its inner diameter is adapted to the outer diameter of the first spring and the outer diameter of the second spring, the limiting member limits the first spring and the second spring, thereby reducing the displacement and swaying of the first spring and the second spring under the impact of water hammer effect, and thus improving the buffering and force-dissipating effect of the first spring and the second spring against water hammer effect.
[0020] Furthermore, the blocking component is a buoyant ball, the outer diameter of which is smaller than the inner diameter of the buffer tube. The spherical structure of the buoyant ball can more evenly disperse the impact force of the water hammer effect, reducing the damage caused by the water hammer and minimizing the offset and swaying under the influence of the water hammer. When the outer diameter of the buoyant ball is the same as the inner diameter of the buffer tube, the buoyant ball will completely block the buffer tube, preventing the impacting water flow from being buffered and flowing through the pipe. The impact force generated by the water hammer effect will then act entirely on the buffer device, causing significant damage. Therefore, by setting the outer diameter of the buoyant ball to be smaller than the inner diameter of the buffer tube, the impacting water flow can be buffered and flow through the pipe, preventing the impact force generated by the water hammer effect from acting entirely on the buffer device, thus protecting the buffer device.
[0021] Furthermore, the outer diameter of the buoyancy ball is 3 / 5 to 4 / 5 of the inner diameter of the buffer tube. When the outer diameter of the buoyancy ball is less than 3 / 5 of the inner diameter of the buffer tube, the volume of the buoyancy ball is small, and the buoyancy ball is not effective in transferring the water hammer effect impact force to the first spring and the second spring, thus making the water hammer elimination device less effective in buffering and unloading force. When the outer diameter of the buoyancy ball is greater than 4 / 5 of the inner diameter of the buffer tube, the volume of the buoyancy ball is large, the buoyancy ball increases the blockage of the buffer tube, and the impact damage caused by the water hammer effect to the buffer device increases.
[0022] Furthermore, it also includes a bypass pipe, one end of which is connected to the first connecting pipe, and the other end of which is connected to the second connecting pipe. Because the buffer pipe contains the buffer device, the buffer device obstructs the water flow under normal conditions, thus affecting the pump's head. Therefore, by adding the bypass pipe, the flow path of the water in the pipeline is increased, ensuring the pump's head.
[0023] Furthermore, it also includes: a pipeline valve, which is mounted on the bypass pipe and used to control the opening and closing of the bypass pipe. By adding the pipeline valve, the flow path of the bypass pipe is closed when the pump is started or stopped, thereby enabling the buffer device to eliminate the impact force of water hammer as much as possible; when water hammer occurs, the flow path of the bypass pipe is opened by controlling the pipeline valve, increasing the flow path of water in the pipeline and ensuring the pump head.
[0024] Furthermore, the bypass pipe is arc-shaped. The arc-shaped bypass pipe can guide the water flow more smoothly.
[0025] Furthermore, a first connecting flange is provided at the end of the first connecting pipe; a second connecting flange is provided at the end of the second connecting pipe. The first and second connecting flanges allow for faster assembly of the water hammer elimination device into the pipeline system. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the water hammer elimination device according to an embodiment of the present invention;
[0027] Figure 2 This is a schematic diagram of the water hammer elimination device of this utility model installed in a pipeline;
[0028] Figure 3 This utility model provides a schematic diagram of the limiting component in the water hammer elimination device. Detailed Implementation
[0029] As described in the background section, existing technologies for devices to eliminate the effects of water hammer still have many problems. These will be explained in detail below.
[0030] Currently, the industry uses two main methods to control water hammer: installing frequency converters and soft starters in electrical cabinets, or installing water hammer eliminators in the pipelines. The former method is expensive, complex to maintain, and requires a relatively large manpower investment. The latter method uses bulky water hammer eliminators that require a significant amount of installation space.
[0031] Based on this, the present invention provides a water hammer elimination device, including a buffer device disposed within the buffer pipe. The buffer device includes a first spring, a second spring, and a blocking member fixedly connected between the first spring and the second spring. When the impact force generated by the water hammer effect acts on the blocking member, the blocking member will cause one of the first spring and the second spring to compress and the other to stretch. The deformation of the first spring and the second spring is used to buffer and dissipate the impact force generated by the water hammer effect, thereby reducing the impact of the water hammer effect and protecting the pipeline. Furthermore, the overall structure of the water hammer elimination device is relatively simple and practical, with low manufacturing cost. Its small size facilitates installation, and the device can be flexibly assembled according to the location of the water hammer effect during pump start-up and pump shutdown in the pipeline, simultaneously reducing the impact of the water hammer effect during both pump start-up and pump shutdown.
[0032] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0033] In the description of this utility model, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations of this utility model. Furthermore, the terms "first" and "second" are only used to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, order, or relative importance between these entities or operations.
[0034] Figure 1 This is a schematic diagram of the water hammer elimination device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the water hammer elimination device of this utility model installed in a pipeline; Figure 3 This utility model provides a schematic diagram of the limiting component in the water hammer elimination device.
[0035] Please refer to Figure 1A water hammer elimination device 10 includes: a buffer tube 100 having a buffer cavity 100a, the buffer tube 100 extending along a first direction X; a first connecting tube 101 communicating with one end of the buffer tube 100; a second connecting tube 102 communicating with the other end of the buffer tube 100; and a buffer device 103 disposed within the buffer cavity 100a, the buffer device 103 including: a first spring 1031 extending along the first direction X, one end of the first spring 1031 being connected to the buffer tube 100... The inner wall is fixedly connected; a blocking member 1032 is fixedly connected to the other end of the first spring 1031; a second spring 1033 extends along the first direction X, one end of the second spring 1033 is fixedly connected to the inner wall of the buffer tube 100, and the other end of the second spring 1033 is fixedly connected to the blocking member 1032; the first spring 1031, the blocking member 1032 and the second spring 1033 extend along the first direction X, and the blocking member 1032 is located between the first spring 1031 and the second spring 1033.
[0036] When the impact force generated by the water hammer effect acts on the blocking member 1032, the blocking member 1032 will cause one of the first spring 1031 and the second spring 1033 to compress and the other to stretch. The deformation of the first spring 1031 and the second spring 1033 buffers and dissipates the impact force generated by the water hammer effect, thereby reducing the impact of the water hammer effect and protecting the pipeline. In addition, the overall structure of the water hammer elimination device 10 is relatively simple and practical, with low cost. Its small size makes it easy to install, and the water hammer elimination device 10 can be flexibly assembled according to the location of the water hammer effect during pump start-up and pump stop in the pipeline (e.g., Figure 2 As shown in the figure, it can simultaneously reduce the impact of water hammer effect during pump start-up and pump shutdown.
[0037] Please continue to refer to this. Figure 1 In this embodiment, the water hammer elimination device 10 further includes a guide rod 104, which is fixed in the buffer cavity 100a along the first direction X, and the guide rod 104 passes through the blocking member 1032, and the blocking member 1032 can slide back and forth along the guide rod 104.
[0038] By adding the guide rod 104, the blocking member 1032 can remain stable under the impact of water hammer effect, preventing the blocking member 1032 from shifting and shaking within the buffer cavity 100a under the impact of water hammer effect. This ensures that the blocking member 1032 transmits as much of the impact force as possible to the compression or tension direction of the first spring 1031 and the second spring 1033, thereby improving the effect of the first spring 1031 and the second spring 1033 on buffering and dissipating the water hammer effect.
[0039] Please continue to refer to this. Figure 1 In this embodiment, the water hammer elimination device 10 further includes a limiting member 105, which is fitted around the first spring 1031, the blocking member 1032, and the second spring 1033. The inner diameter of the limiting member 105 is adapted to the outer diameter of the first spring 1031 and the outer diameter of the second spring 1033, respectively.
[0040] By configuring the limiting member 105, the inner diameter of the limiting member 105 is adapted to the outer diameter of the first spring 1031 and the outer diameter of the second spring 1033, respectively. The limiting member 105 limits the first spring 1031 and the second spring 1033 to reduce the displacement and swaying of the first spring 1031 and the second spring 1033 under the impact of water hammer effect, thereby improving the buffering and force relief effect of the first spring 1031 and the second spring 1033 against water hammer effect.
[0041] Please refer to Figure 3 It should be noted that in this embodiment, the limiting member 105 is a sleeve structure, which is used to reduce the inner diameter of the buffer cavity 100a to limit the first spring 1031 and the second spring 1033. The inner diameter of the limiting member 105 is adapted to the outer diameter of the first spring 1031 and the outer diameter of the second spring 1033, respectively. That is, the inner diameter of the limiting member 105 is slightly larger than the outer diameter of the first spring 1031 and the outer diameter of the second spring 1033. This ensures that the first spring 1031 and the second spring 1033 can be compressed or stretched relatively smoothly along the first direction X, while also reducing the space for the first spring 1031 and the second spring 1033 to deviate or wobble.
[0042] Please continue to refer to this. Figure 1In this embodiment, the two ends of the guide rod 104 can be fixed in the buffer cavity 100a by adding connecting rods 106. The guide rod 104 is located at the axial position of the buffer tube 100. The connecting rods 106 at both ends of the guide rod 104 can be directly fixed to the limiting member 105, or pass through the limiting member 105 and be fixed to the inner wall of the buffer tube 100.
[0043] In other embodiments, when the inner diameter of the buffer tube is adapted to the outer diameter of the first spring and the outer diameter of the second spring, it is not necessary to add the limiting member.
[0044] Please continue to refer to this. Figure 1 In this embodiment, the blocking member 1032 is a buoyancy ball, and the outer diameter of the buoyancy ball is smaller than the inner diameter of the buffer tube 100.
[0045] The spherical structure of the buoyancy ball can more evenly disperse the impact force of the water hammer effect, reducing the damage caused by the water hammer effect and minimizing the offset and swaying under the action of the water hammer effect. When the outer diameter of the buoyancy ball is the same as the inner diameter of the buffer tube 100, the buoyancy ball will completely block the buffer tube 100, preventing the impacting water flow from being buffered and flowing in the pipe. The impact force generated by the water hammer effect will act entirely on the buffer device 103, causing significant damage to the buffer device 103. Therefore, by setting the outer diameter of the buoyancy ball to be smaller than the inner diameter of the buffer tube 100, the impacting water flow can be buffered and flow in the pipe, preventing the impact force generated by the water hammer effect from acting entirely on the buffer device 103, thus protecting the buffer device 103.
[0046] In this embodiment, the outer diameter of the buoyancy ball is 3 / 5 to 4 / 5 of the inner diameter of the buffer tube 100.
[0047] When the outer diameter of the buoyancy ball is less than 3 / 5 of the inner diameter of the buffer tube 100, the volume of the buoyancy ball is small, and the buoyancy ball is not effective in transferring the water hammer effect impact force to the first spring 1031 and the second spring 1033, thus making the water hammer elimination device 10 less effective in buffering and unloading force. When the outer diameter of the buoyancy ball is greater than 4 / 5 of the inner diameter of the buffer tube 100, the volume of the buoyancy ball is large, the buoyancy ball increases the blockage of the buffer tube 100, and the impact damage caused by the water hammer effect to the buffer device 103 increases.
[0048] In this embodiment, the buoyancy ball is made of stainless steel or plastic. For pipelines supplying corrosive solutions, using a stainless steel buoyancy ball would cause corrosion damage; therefore, a plastic buoyancy ball, such as one made of PE or PP, is required. For pipelines supplying non-corrosive solutions, a stainless steel buoyancy ball can be used, as it has higher strength and is also easier to obtain.
[0049] Please continue to refer to this. Figure 1 In this embodiment, the water hammer elimination device 10 further includes a bypass pipe 107, one end of which is connected to the first connecting pipe 101, and the other end of which is connected to the second connecting pipe 102.
[0050] Because the buffer device 103 is installed inside the buffer pipe 100, the buffer device 103 will obstruct the water flow under normal flow conditions, thereby affecting the pump head. Therefore, by adding the bypass pipe 107, the flow path of water in the pipeline is increased, ensuring the pump head.
[0051] Please continue to refer to this. Figure 1 In this embodiment, the water hammer elimination device 10 further includes a pipeline valve 108, which is mounted on the bypass pipe 107 and is used to control the opening and closing of the bypass pipe 107.
[0052] By adding the pipeline valve 108, the flow path of the bypass pipe 107 is closed by controlling the pipeline valve 108 when the pump is started or stopped, thereby enabling the buffer device 103 to eliminate the impact force of water hammer effect as much as possible; when water hammer effect occurs, the flow path of the bypass pipe 107 is opened by controlling the pipeline valve 108, increasing the flow path of water in the pipeline and ensuring the pump head.
[0053] In this embodiment, the pipeline valve 108 can be remotely controlled or manually operated. For locations that are difficult to access or require a long journey to operate, the pipeline valve 108 can be a remotely controlled valve, allowing for remote control of its opening and closing. For locations that are relatively easy to access, the pipeline valve 108 can be a manually operated valve, which is less expensive.
[0054] Please continue to refer to this. Figure 1 In this embodiment, the bypass pipe 107 is arc-shaped. The arc-shaped bypass pipe 107 can guide the water flow more smoothly.
[0055] Please continue to refer to this. Figure 1In this embodiment, the end of the first connecting pipe 101 is provided with a first connecting flange 109; the end of the second connecting pipe 102 is provided with a second connecting flange 110. The first connecting flange 109 and the second connecting flange 110 enable the water hammer elimination device 10 to be assembled into the pipeline system more quickly.
[0056] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
Claims
1. A water hammer elimination device, characterized in that, include: A buffer tube having a buffer cavity, the buffer tube extending along a first direction; A first connecting pipe, which is connected to one end of the buffer pipe; The second connecting pipe is connected to the other end of the buffer pipe; A buffer device disposed within the buffer cavity, the buffer device comprising: A first spring extends along the first direction, and one end of the first spring is fixedly connected to the inner wall of the buffer tube. A blocking member, the other end of which is fixedly connected to the first spring; The second spring extends along the first direction, one end of the second spring is fixedly connected to the inner wall of the buffer tube, and the other end of the second spring is fixedly connected to the blocking member. The first spring, the blocking member, and the second spring extend along the first direction, and the blocking member is located between the first spring and the second spring.
2. The water hammer elimination device according to claim 1, characterized in that, Also includes: A guide rod is fixed in the buffer cavity along the first direction and passes through the blocking member, which can slide back and forth along the guide rod.
3. The water hammer elimination device according to claim 1, characterized in that, Also includes: A limiting member is fitted around the first spring, the blocking member, and the second spring, and the inner diameter of the limiting member is adapted to the outer diameter of the first spring and the outer diameter of the second spring, respectively.
4. The water hammer elimination device according to claim 1, characterized in that, The blocking component is a buoyancy ball, and the outer diameter of the buoyancy ball is smaller than the inner diameter of the buffer tube.
5. The water hammer elimination device according to claim 4, characterized in that, The outer diameter of the buoyancy ball is 3 / 5 to 4 / 5 of the inner diameter of the buffer tube.
6. The water hammer elimination device according to claim 4, characterized in that, The buoyancy ball is made of materials including stainless steel or plastic.
7. The water hammer elimination device according to claim 1, characterized in that, Also includes: A bypass pipe, one end of which is connected to the first connecting pipe, and the other end of which is connected to the second connecting pipe.
8. The water hammer elimination device according to claim 7, characterized in that, Also includes: A pipeline valve, which is mounted on the bypass pipe, is used to control the opening and closing of the bypass pipe.
9. The water hammer elimination device according to claim 8, characterized in that, The pipeline valves include: remote control valves or manual valves.
10. The water hammer elimination device according to claim 7, characterized in that, The bypass pipe is arc-shaped.
11. The water hammer elimination device according to claim 1, characterized in that, The first connecting pipe has a first connecting flange at its end; the second connecting pipe has a second connecting flange at its end.