Waterproof hammer device for long-distance water delivery pipeline

Abstract

The utility model discloses a water hammer preventing device for a long-distance water conveying pipeline, which relates to the technical field of water supply safety and comprises fixed pipelines at two ends, a movable pipeline in the middle and a water hammer preventing mechanism, a sleeve is fixedly arranged on the outer side of a main pipe of each fixed pipeline, and a pipeline valve is mounted on each movable pipeline. The movable pipeline is composed of a movable pipe body, piston type sealing ring seats are installed at the two ends of the movable pipe body, and the two ends of the movable pipe body are arranged in a gap between the sleeve of the fixed pipeline and the main pipe in a sealed and sleeved mode through the piston type sealing ring seats. Through the arrangement of the movable pipeline and the elastic buffer, a buffer distance can be provided when the valve is suddenly closed, and the instantaneous impact force of water flow is reduced, so that the water hammer phenomenon is obviously reduced; besides the primary buffering function of the movable pipeline and the elastic buffer, the water hammer preventing mechanism is further arranged, when the water pressure is too high, the pressure relief valve pipe can be opened in time, the too high water pressure is released, and the water hammer effect is further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of water supply safety technology, specifically relating to a waterproof hammer device for long-distance water transmission pipelines. Background Technology

[0002] Water hammer is a common problem in long-distance water transmission networks, causing severe damage to the pipeline system. Water hammer typically occurs when pipeline valves are suddenly closed or opened, causing a sharp change in water flow velocity within the pipeline, resulting in pressure fluctuations. These pressure fluctuations can lead to pipe ruptures, leaks at connections, and equipment damage, affecting not only water transmission efficiency but also potentially causing significant economic losses and environmental damage.

[0003] While existing water transmission networks have implemented measures to mitigate water hammer, these measures often have limitations. For example, traditional buffer devices may not completely eliminate water hammer, especially under high pressure and long-distance water transmission conditions. Furthermore, some existing devices may malfunction during normal water transmission, leading to unnecessary energy waste and equipment damage. Utility Model Content

[0004] In view of the problems existing in the prior art, this utility model provides a water hammer device for long-distance water transmission pipelines. Through multi-layer protection mechanisms and intelligent design, it effectively solves the water hammer problem in long-distance water transmission networks and improves the safety and stability of the water transmission system.

[0005] The solution adopted by this utility model to solve its technical problem is: a waterproof hammer device for long-distance water transmission pipelines, including fixed pipes at both ends and a movable pipe in the middle, and a waterproof hammer mechanism. A sleeve is fixedly installed on the outside of the main pipe of the fixed pipe, and a pipe valve is installed on the movable pipe. The movable pipe is composed of a movable pipe body, and piston-type sealing ring seats are installed at both ends of the movable pipe body. The two ends of the movable pipe body are sealed in the gap between the sleeve and the main pipe of the fixed pipe through the piston-type sealing ring seats, and the piston-type sealing ring seats are connected to the fixed pipe through an elastic buffer. The waterproof hammer mechanism includes a pressure relief valve pipe, which is vertically installed on the movable pipe body and communicates with it. A conical valve seat is fixedly installed in the pressure relief valve pipe, and a valve block is installed in the pressure relief valve seat. The valve block is installed in the pressure relief valve pipe through a compression spring. The valve block cooperates with the conical valve seat to open and close the pressure relief valve pipe. Multiple drain holes are opened on the pressure relief valve pipe.

[0006] Furthermore, a locking component is provided between the valve block and the conical valve seat. A tension rope is fixedly connected to the fixed pipe near the water flow end of the water supply pipeline. A pulley is installed on the pressure relief valve pipe. After being guided by the pulley, the tension rope extends into the pressure relief valve pipe through the through hole at the top of the pressure relief valve pipe and is connected to the valve block.

[0007] Furthermore, the valve block includes a mass block, the lower end of which is a conical block that matches the conical valve seat. A piston ring is provided on the outer periphery of the mass block, and the valve block is sealed and movably fitted inside the pressure relief valve pipe through the piston ring.

[0008] Furthermore, the locking component includes a positive magnet embedded in a conical block of the valve block, and a negative magnetic ring that attracts the positive magnet is embedded in the conical valve seat.

[0009] Furthermore, the elastic buffer is a spring, which is fitted in the gap between the sleeve and the main tube. One end of the spring is fixed to the inner wall of the sleeve, and the other end is fixed to the outer end of the piston-type sealing ring seat.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention, by incorporating a movable pipe and an elastic buffer, provides a buffer distance when the valve is suddenly closed, reducing the instantaneous impact force of the water flow and thus significantly reducing water hammer. In addition to the primary buffering effect of the movable pipe and elastic buffer, this invention is also equipped with a water hammer prevention mechanism, including a pressure relief valve and a locking component. When the water pressure is too high, the pressure relief valve opens promptly to release the excessive pressure, further reducing the water hammer effect. The locking component design ensures that the pressure relief valve will not be accidentally opened due to normal water pressure in the pipeline during normal water transmission, thus avoiding unnecessary energy waste and equipment damage. When the pressure in the pipeline returns to normal, the elastic buffer and spring automatically push the movable pipe and valve block to reset, ensuring the device returns to normal operation without manual intervention. This invention is particularly suitable for high-pressure, long-distance water transmission networks, significantly improving the safety and reliability of the water transmission system and reducing equipment damage and maintenance costs caused by water hammer. The device has a reasonable structural design, few components, and is easy to install and maintain, reducing operating costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the split structure of this utility model;

[0014] Figure 3 This is a frontal sectional view of the present invention.

[0015] Figure 4 This is a schematic diagram of the waterproof hammer mechanism of this utility model;

[0016] Figure 5 This is a schematic diagram of the valve block structure of this utility model.

[0017] In the diagram: 1. Fixed pipe; 11. Sleeve; 12. Main pipe; 13. Connecting flange; 2. Movable pipe; 21. Movable pipe body; 22. Piston-type sealing ring seat; 3. Pipe valve; 4. Water hammer mechanism; 41. Pressure relief valve pipe; 42. Valve block; 421. Mass block; 422. Piston ring; 43. Conical valve seat; 44. Compression spring; 45. Drain hole; 5. Elastic buffer; 6. Positive magnet; 7. Pulley; 8. Tensioning rope; 9. Negative magnetic ring. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Please see Figure 1-5 This utility model provides a technical solution for a waterproof hammer device for long-distance water transmission pipelines: Example

[0020] according to Figure 1 and Figure 2 As shown, a water hammer protection device for long-distance water transmission pipelines mainly includes fixed pipes 1 at both ends and a movable pipe 2 in the middle. The fixed pipes 1 are symmetrically arranged at both ends. A connecting flange 13 is installed on the outer end of the main pipe 12 of the fixed pipe 1. The fixed pipes 1 are connected to the water transmission pipeline through the connecting flange 13. A sleeve 11 is fixedly installed on the outside of the main pipe 12 of the fixed pipe 1. The movable pipe 2 is located between the two fixed pipes 1 and is mainly composed of a movable pipe body 21. Piston-type sealing ring seats 22 are installed at both ends of the movable pipe body 21. The piston-type sealing ring seat 22 is fitted into the gap between the sleeve 11 and the main pipe 12 on the fixed pipe 1. The piston-type sealing ring seat 22 is connected to the gap between the sleeve 11 and the main pipe 12 through the elastic buffer 5. The elastic buffer 5 is a component with elastic buffering effect. Here, a spring is used as an example. The spring is fitted into the gap between the sleeve 11 and the main pipe 12. One end of the spring is fixed to the inner wall of the sleeve 11, and the other end is fixed to the outer end of the piston-type sealing ring seat 22, thereby forming a buffer space in the fixed pipe 1. The pipe valve 3 of the water supply pipeline is installed on the movable pipe 2.

[0021] In long-distance water transmission pipelines, water flows from left to right along the pipeline. When the pipeline valve 3 is suddenly closed, the water flow on the left side of the valve 3 is suddenly intercepted, and the water pressure on the water transmission side of the pipeline suddenly increases. This will generate an instantaneous water flow impact force on the left side of the valve 3, which can easily lead to water hammer. At this time, through the above-mentioned pipeline structure, when the water flow in the pipeline is intercepted and the water pressure surges, the instantaneous impact force of the water flow will exert a sudden rightward thrust on the movable pipe 2, causing the movable pipe 2 to move a certain distance to the right. At the same time, with the cooperation of the elastic buffer 5, a buffer distance is provided for the water flow intercepted on the left side, thereby reducing the instantaneous impact force generated by the intercepted water flow and thus reducing the water hammer effect. Example

[0022] If the water pressure in the water supply pipeline is high, the buffer distance provided by the movable pipe 2 and the elastic buffer 5 when the valve is suddenly closed cannot completely eliminate the water hammer phenomenon. Therefore, based on the first embodiment, this embodiment additionally sets up a water hammer prevention mechanism 4 to further reduce and eventually completely eliminate the water hammer phenomenon in conjunction with the buffering effect.

[0023] like Figure 3-5 As shown, the waterproof hammer mechanism 4 includes a pressure relief valve pipe 41, which is vertically mounted on and connected to the movable pipe body 21. The pressure relief valve pipe 41 is located on the water-facing side of the pipeline valve 3. A conical valve seat 43 is fixedly installed inside the pressure relief valve pipe 41, and the conical valve seat 43 is positioned close to the movable pipe body. A valve block 42 is also installed inside the pressure relief valve pipe 41, which cooperates with the conical valve seat 43 to achieve the valve opening and closing effect. The specific structure of the valve block 42 is as follows. Figure 5 As shown, it includes a mass block 421, which has a certain weight. The lower end of the mass block 421 is a conical block that matches the conical valve seat 43. A piston ring 422 is provided on the outer periphery of the mass block 421. The valve block 42 is sealed and movably fitted inside the pressure relief valve pipe 41 through the piston ring 422. A compression spring 44 is installed between the valve block 42 and the pressure relief valve pipe 41. The upper and lower ends of the compression spring 44 are respectively connected to the inner top wall of the valve block 42 and the pressure relief valve pipe 41. When the valve block 42 moves downward and is fully engaged with the conical valve seat 43, the pressure relief valve pipe 41 is closed and water cannot enter. When the valve block 42 moves upward and disengages from the conical valve seat 43, the pressure relief valve pipe 41 is opened and water can enter. Multiple drain holes 45 are provided along the peripheral wall near the upper end of the pressure relief valve pipe 41.

[0024] Under normal conditions, the pressure relief valve pipe 41 is closed due to the thrust of the compression spring 44 and the weight of the valve block 42, and water flows normally in the water supply pipeline. When the valve is suddenly closed and the pressure in the pipeline surges, after the buffering effect provided in Embodiment 1, if the pressure in the pipeline is still high, the higher water pressure will overcome the thrust of the compression spring 44 and the weight of the valve block 42, pushing the valve block 42 upward and opening the pressure relief valve pipe 41. The higher water pressure can then be released outward through the pressure relief valve pipe 41, thereby reducing the water pressure in the main water supply pipe 12 and further reducing the water hammer phenomenon. Example

[0025] Based on Embodiment 2, since long-distance water transmission pipelines generate a certain water pressure inside the pipeline during normal water transmission in order to ensure normal water transmission and a certain water volume, locking components are provided on the valve block 42 and the conical valve seat 43 to prevent the water pressure inside the pipeline from accidentally opening the pressure relief valve 41 during normal water transmission.

[0026] Specifically, such as Figure 4 As shown, the locking component includes a positive magnet 6 embedded in the conical block of the valve block 42, and a negative magnetic ring 9 embedded in the conical valve seat 43 that attracts the positive magnet 6. When the pressure relief valve pipe 41 is closed, the positive magnet 6 and the negative magnetic ring 9 are in corresponding positions and attract each other, providing a locking effect between the valve block 42 and the conical valve seat 43. With this configuration, the pressure spring 44, the weight of the valve block 42, and the magnetic locking of the locking component work together to increase the force required to open the pressure relief valve pipe 41. The water pressure generated during normal water supply in the water pipeline cannot open the pressure relief valve pipe 41, thus solving the problem of the pressure relief valve pipe 41 being accidentally opened.

[0027] When the force required to open the pressure relief valve 41 increases, a corresponding mechanism needs to be installed to assist in opening the pressure relief valve 41, so that the pressure relief valve 41 can be opened in time to relieve pressure in the pipeline when water hammer occurs. Figure 3As shown, a tension rope 8 is fixedly connected to the fixed pipe 1 near the water flow end of the water supply pipeline. A pulley 7 is installed on the pressure relief valve pipe 41. The tension rope 8 is guided by the pulley 7 and extends into the pressure relief valve pipe 41 through the through hole at the top of the pressure relief valve pipe 41 and is connected to the valve block 42. With this setup, when the pipe valve 3 is suddenly closed, the water flow on the left side of the pipe is intercepted and the pressure surges, pushing the movable pipe 2 to move a distance to the right. At this time, the pressure relief valve pipe 41 moves to the right simultaneously. The length of the tension rope 8 is fixed and it is in a tensioned state. Therefore, when the movable pipe 2 moves to the right, the tension rope 8 can pull the valve block 42 to move upward. Under the action of the instantaneous pulling force generated by the instantaneous movement of the movable pipe 2 in conjunction with the tension rope 8, the valve block 42 is pulled to overcome the attraction between the positive magnet 6 and the negative magnetic ring 9 and move upward. When the valve block 42 moves up and down out of the magnetic force range, the locking effect of the locking component will disappear. At this time, through the cooperation between the structures provided in Embodiment 2, the pressure relief in the pipe is realized, further reducing the water hammer effect and achieving the effect of preventing water hammer in the pipe.

[0028] When the pressure inside the pipeline returns to normal, the automatic return effect of the elastic buffer 5 pushes the movable pipeline 2 back to the middle. Then, through the thrust of the compression spring 44 and the weight of the valve block 42, the valve block 42 moves downward to close and is locked again by the locking component.

[0029] In summary, this utility model provides a water hammer prevention device for long-distance water transmission pipelines. In practical application, combined with embodiments one through three, it effectively reduces the water hammer effect through a multi-layered protection mechanism, ensuring the safety and stability of the water transmission network. The main working principle and usage process of the device are as follows:

[0030] Normal water supply state: When the water supply network is operating normally, the water in the pipeline flows smoothly through the movable pipe 2 and the fixed pipe 1. At this time, the elastic buffer 5 is in the initial state, and the pressure relief valve pipe 41 of the water hammer mechanism 4 is kept closed under the gravity of the compression spring 44 and the valve block 42. The locking component further ensures that the pressure relief valve pipe 41 will not be opened by mistake due to normal water supply pressure.

[0031] Buffering effect when valve suddenly closes: When pipeline valve 3 suddenly closes, the water flow in the pipeline is intercepted, and the water pressure on the left side surges instantly. At this time, the movable pipeline 2 moves to the right under the action of the water flow impact force. The elastic buffer 5 provides buffer distance through the elastic deformation of the spring, reduces the instantaneous impact force of the water flow, and initially alleviates the water hammer phenomenon.

[0032] The auxiliary pressure relief function of the pressure relief valve pipe 41: If the water pressure is still high, the movement of the movable pipe 2 will pull the valve block 42 upward through the tensioning rope 8, overcoming the thrust of the pressure spring 44 and the gravity of the valve block 42, and at the same time breaking through the locking attraction of the positive and negative magnets, so that the pressure relief valve pipe 41 opens, and the high-pressure water in the pipe is discharged through the pressure relief valve pipe 41 and the drain hole 45, further reducing the water pressure in the pipe and completely eliminating the water hammer effect;

[0033] Reset after pressure returns to normal: When the pressure in the pipeline returns to normal, the elastic buffer 5 pushes the movable pipeline 2 back to the initial position through the restoring force of the spring. At the same time, the weight of the pressure spring 44 and the valve block 42 causes the valve block 42 to move downward, closing the pressure relief valve pipe 41. The locking component plays its role again, ensuring that the pressure relief valve pipe 41 remains closed under normal water supply conditions.

[0034] Overall effect: This utility model constructs a multi-layer water hammer protection mechanism through the synergistic effect of movable pipe 2, elastic buffer 5, pressure relief valve pipe 41 and locking components. The device can not only effectively reduce the water hammer effect, but also avoid misoperation during normal water transmission, significantly improving the safety and reliability of long-distance water transmission pipelines. It is especially suitable for the water hammer protection needs of high-pressure, long-distance water transmission networks.

[0035] The above description is only a preferred embodiment of the present utility model and does not limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water hammer arrestor device for long distance water pipelines, comprising a fixed pipe (1) at both ends and a movable pipe (2) in the middle, characterized in that: The utility model also includes waterproof hammer mechanism (4), the fixed pipeline (1) main pipe (12) outside fixedly arranged with sleeve (11), the pipeline valve (3) is installed on the movable pipeline (2), the movable pipeline (2) is formed by movable pipe body (21), the piston type sealing ring seat (22) is installed at the both ends of movable pipe body (21), the both ends of movable pipe body (21) are sealed and packed in the clearance of sleeve (11) and main pipe (12) of fixed pipeline (1) through the piston type sealing ring seat (22), and the piston type sealing ring seat (22) is connected in fixed pipeline (1) through the elastic buffer (5), the waterproof hammer mechanism (4) includes pressure relief valve pipe (41), and the pressure relief valve pipe (41) is vertically arranged on movable pipe body (21) and is communicated with it, the conical valve seat (43) is fixedly arranged in the pressure relief valve pipe (41), the valve block (42) is packed in the pressure relief valve seat, the valve block (42) is installed in the pressure relief valve pipe (41) through the compression spring (44), and the valve block (42) is matched with the conical valve seat (43) and opens and closes the pressure relief valve pipe (41), a plurality of water release holes (45) are formed in the pressure relief valve pipe (41).

2. A water hammer arrestor for long distance water pipelines according to claim 1, characterized in that: Locking components are arranged between the valve block (42) and the conical valve seat (43), a fixed pipeline (1) near the water flow inlet end of the water pipeline is fixedly connected with a tension pull rope (8), a pulley (7) is installed on the pressure relief valve pipe (41), the tension pull rope (8) is guided through the pulley (7) and then extends into the pressure relief valve pipe (41) through the through hole at the top of the pressure relief valve pipe (41) and is connected to the valve block (42).

3. A water hammer arrestor for long distance water pipelines as claimed in claim 1 wherein: The valve block (42) includes a mass block (421), the lower end of the mass block (421) is a conical block matched with the conical valve seat (43), a piston ring (422) is arranged on the outer periphery of the mass block (421), and the valve block (42) is sealingly and movably arranged in the pressure relief valve pipe (41) through the piston ring (422).

4. A water hammer arrestor for long distance water pipelines according to claim 2, characterized in that: The locking components include a positive magnet (6) embedded in the conical block of the valve block (42), and a negative magnet ring (9) is embedded in the conical valve seat (43) and is mutually attracted to the positive magnet (6).

5. A water hammer arrestor for long distance water pipelines as claimed in claim 1 wherein: The elastic buffer (5) is a spring, the spring is packed in the clearance between the sleeve (11) and the main pipe (12), one end of the spring is fixed to the inner wall of the sleeve (11), and the other end is fixed to the outer end of the piston type sealing ring seat (22).

Images