Damping device of pipeline valve

Abstract

The utility model belongs to the technical field of pipeline valves, and particularly relates to a damping device of a pipeline valve, which comprises a first pipeline valve, first protective shells and a water hammer eliminating device, the two sides of the outer wall of the first pipeline valve are provided with the first protective shells, and the first protective shells are fixedly communicated with a second protective shell through a three-way pipe; and a water hammer eliminating device is arranged at one end of the second protective shell. According to the damping device of the pipeline valve, throttling rings and damping corrugated pipes are arranged in the two protective shells, the space between the protective shells and the outer wall of the pipeline valve is filled with sponge, the sponge can absorb impact force of water flow, and the damping effect is achieved; when pressure waves generated by the water hammer phenomenon reach the water hammer eliminating device, the pressure waves can force the piston to move towards one side of the valve body, and the effect of absorbing and decomposing the pressure waves is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline valves, in particular to a shock absorbing device for pipeline valves. Background Art

[0002] A valve is a control component in a pipeline fluid delivery system. It is a device used to change the cross-section of the passage and the flow direction of the medium and to control the flow of the conveyed medium. It has functions such as diversion, cutoff, throttling, non-return, diversion or overflow pressure relief. However, in the process of water supply and some liquid delivery, water hammer phenomenon often occurs due to the sudden increase of force in the pipeline caused by the opening and closing of valves or pumps. This water hammer phenomenon is also called water hammer. In addition to generating annoying noise and vibration, its severity will affect the operation of the entire pipeline system. Utility Model Content

[0003] Based on the technical problem of existing pipeline valve vibration, the utility model proposes a pipeline valve vibration reduction device.

[0004] The utility model proposes a shock absorbing device for a pipeline valve, comprising a first pipeline valve, a first protective shell and a water hammer elimination device, wherein the first protective shell is arranged on both sides of the outer wall of the first pipeline valve, and a first throttling ring is arranged at one end inside the first protective shell, one end of the first throttling ring is fixedly connected to one end of a first shock absorbing bellows, the other end of the first shock absorbing bellows is threadedly connected to one end of the first pipeline valve, the other end of the first pipeline valve is fixedly connected to one end of a second shock absorbing bellows, the other end of the second shock absorbing bellows is fixedly connected to one end of a second throttling ring, the other end of the second throttling ring is fixedly connected to one end of a second protective shell through a tee pipe, the second protective shells are arranged on the outside of the second pipeline valve, and one end of the second protective shell is fixedly connected to one end of the water hammer elimination device.

[0005] Preferably, a sponge is filled between the interior of the first protective shell and the outer wall of the first pipeline valve.

[0006] Through the above technical solution, the protective shell wraps around the pipeline valve, and the sponge filled between the protective shell and the outer wall of the pipeline can effectively reduce the vibration and impact generated inside the pipeline system, and can also effectively absorb the noise generated when water flows in the pipeline, thereby reducing the propagation of environmental noise. The sponge, as a soft filling material, is easy to cut and adjust its shape, making the installation and maintenance process more convenient, and can be customized according to the specific pipeline size and shape to ensure the filling effect and adaptability.

[0007] Preferably, the first protective shell and the second protective shell have the same structure, and one end of the first protective shell and the second protective shell are fixedly connected to the two ends of the three-way pipe in the vertical direction and the horizontal direction respectively, the first protective shell is symmetrically arranged with respect to the central axis of the first pipeline valve, and the first protective shell is threadedly connected through nuts and screws on the outer wall, and the screws are symmetrically arranged with respect to the central axis of the first protective shell.

[0008] Through the above technical solution, the first protective shell is fixed to both sides of the first pipeline valve by screws, so that the first protective shell is more solid and less likely to shake, thereby improving the stability of the first pipeline valve.

[0009] Preferably, one end of the first shock-absorbing bellows and the second shock-absorbing bellows are threadedly connected to the first pipeline valve through screws and nuts, and the other ends of the first shock-absorbing bellows and the second shock-absorbing bellows are fixedly connected to one end of the first throttling ring and the second throttling ring.

[0010] Through the above technical solution, one end of the throttling ring is fixedly installed at one end inside the protective shell, which can achieve the effect of limiting the cross-sectional area through which the fluid passes or increasing the path of the fluid flow, thereby achieving the effect of controlling the flow rate, reducing the pressure, and reducing pressure shock or vibration. One end of the throttling ring is fixedly installed at one end of the shock-absorbing bellows, which is connected to the pipeline through the shock-absorbing bellows. The shock-absorbing bellows can absorb the pressure waves generated by the water hammer phenomenon through its corrugated structure and elastic material, thereby further reducing the vibration of the pipeline valve.

[0011] Preferably, a lower piston disc is fixedly installed at one end of the interior of the valve body, and the lower piston disc is circular, and its size and shape fit the interior of the valve body. The first sealing ring and the second sealing ring are both sleeved on both sides of the piston inside the valve body to ensure the sealing of the piston during movement.

[0012] Through the above technical solution, the lower piston disc inside the valve body ensures that when the piston moves, the inside of the container remains closed, there will be no fluid leakage or pressure loss, and the effectiveness of the seal is guaranteed. The lower piston disc also plays the role of supporting and guiding the piston. When the piston moves, the stability and correct movement trajectory of the piston are guaranteed to prevent it from being offset or stuck inside the container. The sealing ring is sleeved between the piston and the valve body to ensure the sealing of the piston during movement and prevent water from bypassing the piston to leak or lose. The sealing ring can also reduce the friction loss between the piston and the valve body.

[0013] Preferably, the other end of the valve body is fixedly connected to one end of the pressure gauge through the cavity, and the lower end of the gas injection valve is fixedly connected to the other end of the valve body through the cavity.

[0014] Through the above technical solution, the pressure gauge and the air injection valve are fixedly connected to one end of the valve body through the cavity. The pressure gauge can monitor the pressure changes in the valve body in real time to ensure that timely measures are taken when the air pressure inside the valve body is abnormal. The air injection valve can adjust the pressure of the gas in the valve body by injecting an appropriate amount of gas into the valve body to adjust and optimize the working effect and response speed of the water hammer elimination device.

[0015] The beneficial effects of the present invention are:

[0016] 1. By arranging the first protective shell and the second protective shell on both sides of the outer wall of the first pipeline valve and the second pipeline valve, the effect of fixing the pipeline valve is achieved, making the two pipeline valves more firm and not easy to shake. Sponge is also filled between the inside of the protective shell and the outer wall of the pipeline valve, which can effectively reduce the noise caused by water hammer when the valve is closed too quickly, and can also wrap the outer wall of the pipeline at both ends of the pipeline valve. The vibration wave will be decomposed by the sponge, further reducing the vibration of the pipeline valve.

[0017] 2. By setting throttling rings at both ends of the inner part of the protective shell, and the aperture of the throttling ring is designed to be smaller than the aperture of the pipe, the water flow through the pipe will be hindered, the pressure of the fluid will increase, the effect of slowing down the water flow is achieved, and the impact force of the water flow is reduced. A shock-absorbing bellows is fixedly connected on one side of the throttling ring. When the water flow speed in the pipe suddenly changes or the valve is closed, pressure waves will be generated. The shock-absorbing bellows can absorb these pressure waves through its special corrugated structure and elastic material, thereby reducing or eliminating damage to pipes, valves and other equipment.

[0018] 3. By setting a water hammer elimination device and fixing it on one side of the pipeline valve, when water hammer occurs in the pipeline system, that is, when the water flow suddenly changes speed or direction, pressure waves will be generated. These pressure waves will propagate to the water hammer elimination device. When the pressure wave reaches the valve body, the piston will be affected by the pressure wave, thereby forcing the piston to move to one side of the valve body. Through the movement of the piston, the energy of the pressure wave is partially absorbed and dispersed, thereby reducing the impact force on the pipeline and connectors, achieving the effect of pipeline valve shock absorption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of a shock absorbing device for a pipeline valve proposed by the utility model;

[0020] Figure 2 A half-section view of a first protective shell structure of a shock absorbing device for a pipeline valve proposed by the utility model;

[0021] Figure 3 A three-dimensional diagram of a first throttling ring structure of a shock absorbing device for a pipeline valve proposed by the utility model;

[0022] Figure 4 The utility model is a cross-sectional view of the structure of a water hammer eliminating device of a pipeline valve damping device.

[0023] In the figure: 1. first pipeline valve; 2. first protective shell; 21. first throttling ring; 22. first shock-absorbing bellows; 23. second shock-absorbing bellows; 24. second throttling ring; 25. three-way pipe; 26. sponge; 3. second protective shell; 4. second pipeline valve; 5. water hammer elimination device; 51. valve body; 52. lower piston plate; 53. piston; 54. first sealing ring; 55. second sealing ring; 56. cavity; 57. pressure gauge; 58. air injection valve. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] Reference Figure 1-Figure 4 A shock absorbing device for a pipeline valve comprises a first pipeline valve 1, a first protective shell 2 and a water hammer elimination device 5, wherein the first protective shell 2 is arranged on both sides of the outer wall of the first pipeline valve 1, and a first throttling ring 21 is arranged at one end of the interior of the first protective shell 2, one end of the first throttling ring 21 is fixedly connected to one end of a first shock absorbing bellows 22, the other end of the first shock absorbing bellows 22 is threadedly connected to one end of the first pipeline valve 1, the other end of the first pipeline valve 1 is threadedly connected to one end of a second shock absorbing bellows 23, the other end of the second shock absorbing bellows 23 is fixedly connected to one end of a second throttling ring 24, the other end of the second throttling ring 24 is fixedly connected to one end of a second protective shell 3 through a tee pipe 25, the second protective shells 3 are arranged on the outside of a second pipeline valve 4, and one end of the second protective shell 3 is fixedly connected to one end of the water hammer elimination device 5.

[0026] In order to reduce the noise caused by water hammer when the valve is closed too quickly, the outer walls of the pipeline at both ends of the pipeline valve can be wrapped to reduce the vibration of the pipeline valve, so that the interior of the first protective shell 2 and the outer wall of the first pipeline valve 1 are filled with sponge 26. In order to fix the first protective shell 2 and the second protective shell 3 and improve the stability of the first pipeline valve 1 and the second pipeline valve 4, the second protective shell 3 and the first protective shell 2 have the same structure, and the second protective shell 3 is arranged on the outside of the second pipeline valve 4. One end of the first protective shell 2 and the second protective shell 3 are fixedly connected to the two ends of the three-way pipe 25 in the vertical direction and the horizontal direction respectively. The first protective shell 2 is symmetrically arranged with the central axis of the first pipeline valve 1. The first protective shell 2 is threadedly connected through nuts and screws on the outer wall, and the screws are symmetrically arranged with the central axis of the first protective shell 2.

[0027] By arranging a sponge 26 filled between the inside of the protective shell and the outer wall of the pipeline valve, the noise generated by the water hammer phenomenon when the valve is closed too quickly is effectively reduced, and the outer walls of the pipeline at both ends of the pipeline valve can be wrapped. The vibration wave will be decomposed by the sponge, further reducing the vibration of the pipeline valve. The first protective shell 2 and the second protective shell 3 on both sides of the outer wall of the first pipeline valve 1 and the second pipeline valve 4 achieve the effect of fixing the pipeline valve, making the two pipeline valves more firm and not easy to shake.

[0028] In order to hinder the flow of water through the pipeline, thereby increasing the pressure of the fluid to slow down the water flow rate, and also to share the water flow force borne by the throttling ring to reduce the vibration of the pipeline valve, the first throttling ring 21 and the second throttling ring 24 are fixedly connected at both ends inside the first protective shell 2, and the other ends of the first throttling ring 21 and the second throttling ring 24 are fixedly connected to the first shock-absorbing bellows 22 and the second shock-absorbing bellows 23 respectively. The first shock-absorbing bellows 22 and the second shock-absorbing bellows 23 are both threadedly connected to the first pipeline valve 1 through screws and nuts.

[0029] By arranging the first throttling ring 21 and the second throttling ring 24 at the two ends inside the first protective shell 2, and the aperture of the throttling ring is designed to be smaller than the aperture of the pipe, the water flow through the pipe will be hindered, and the pressure of the fluid will increase, thereby achieving the effect of slowing down the water flow and reducing the impact force of the water flow. A shock-absorbing bellows is fixedly connected to one side of the throttling ring. When the water flow speed in the pipe suddenly changes or the valve is closed, pressure waves will be generated. The shock-absorbing bellows can absorb these pressure waves through its special corrugated structure and elastic material, thereby reducing or eliminating damage to pipes, valves and other equipment.

[0030] In order to keep the interior of the valve body 51 sealed and prevent fluid leakage or pressure loss, thereby ensuring the effectiveness of the seal, a lower piston disc 52 is fixedly installed at one end of the interior of the valve body 51. The lower piston disc 52 is circular, and its size and shape fit the interior of the valve body 51. The first sealing ring 54 and the second sealing ring 55 are both sleeved on both sides of the piston 53 inside the valve body 51 to ensure the sealing of the piston 53 during movement.

[0031] By setting a water hammer elimination device 5 fixedly connected to one end of the second pipeline valve 4, when water hammer occurs, that is, when the water flow suddenly changes speed or direction, pressure waves will be generated. These pressure waves will propagate to the water hammer elimination device 5. When the pressure wave reaches the valve body 51, the piston 53 will be affected by the pressure wave, thereby forcing the piston 53 to move to one side of the valve body 51. Through the movement of the piston 53, the energy of the pressure wave is partially absorbed and dispersed, thereby reducing the impact force on the pipeline and the connector, and achieving the effect of pipeline valve shock absorption.

[0032] In order to monitor the pressure changes in the valve body 51 in real time, ensure that timely measures are taken when the air pressure inside the valve body 51 is abnormal, and adjust and optimize the working effect and response speed of the water hammer elimination device 5, the other end of the valve body 51 is fixedly connected to one end of the pressure gauge 57 through the cavity 56, and the lower end of the air injection valve 58 is fixedly connected to the other end of the valve body 51 through the cavity 56.

[0033] Working principle: When in use, first wrap the first protective shell 2 and the second protective shell 3 around the outside of the first pipeline valve 1 and the second pipeline valve 4 respectively, and then screw the screws on the outside of the protective shells into the nuts to protect and fix the pipeline valves. After opening the first pipeline valve 1, the water flow will first flow through the first throttling ring 21. Because the aperture of the first throttling ring 21 is designed to be smaller than the aperture of the pipeline, the water flow is hindered, thereby increasing the pressure of the fluid. According to the Bernoulli principle, the pressure of the fluid increases after passing through the first throttling ring 21, and the speed decreases accordingly. One end of the first throttling ring 21 is fixedly connected to one end of the first shock-absorbing bellows 22. The first shock-absorbing bellows 22 can absorb and relieve the pressure caused by fluid movement in the pipeline system. When the water flows through the second protective shell 3, the throttling ring and the shock absorbing bellows inside the second protective shell 3 have the same effect as the throttling ring and the shock absorbing bellows inside the first protective shell 2. In order to reduce the flow rate of the water and reduce the vibration, when the pressure wave generated by the water flow reaches the water hammer elimination device 5, the piston 53 is affected by the pressure wave, forcing the piston 53 to move to one side of the valve body 51, and the energy of the pressure wave is partially absorbed and dispersed, thereby reducing the impact force on the pipeline and the connector, and achieving the effect of pipeline valve shock absorption.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pipeline valve damping device, comprising a first pipeline valve (1), a first protective housing (2) and a water hammer elimination device (5), characterized in that: The first protective shell (2) is arranged on both sides of the outer wall of the first pipeline valve (1); a first throttling ring (21) is arranged at one end inside the first protective shell (2); one end of the first throttling ring (21) is fixedly connected to one end of a first shock-absorbing bellows (22); the other end of the first shock-absorbing bellows (22) is threadedly connected to one end of the first pipeline valve (1); the other end of the first pipeline valve (1) is threadedly connected to one end of a second shock-absorbing bellows (23); the other end of the second shock-absorbing bellows (23) is fixedly connected to one end of a second throttling ring (24); the other end of the second throttling ring (24) is fixedly connected to one end of a second protective shell (3) through a three-way pipe (25); the second protective shell (3) is arranged on the outside of the second pipeline valve (4); and one end of the second protective shell (3) is fixedly connected to one end of a water hammer elimination device (5).

2. A shock absorbing device for a pipeline valve according to claim 1, characterized in that: A sponge (26) is filled between the interior of the first protective shell (2) and the outer wall of the first pipeline valve (1).

3. A shock absorbing device for a pipeline valve according to claim 1, characterized in that: The first protective shell (2) and the second protective shell (3) have the same structure, and one end of the first protective shell (2) and the second protective shell (3) are fixedly connected to the two ends of the three-way pipe (25) in the vertical direction and the horizontal direction respectively, and the first protective shell (2) is symmetrically arranged with respect to the central axis of the first pipeline valve (1), and the first protective shell (2) is threadedly connected through nuts and screws on the outer wall, and the screws are symmetrically arranged with respect to the central axis of the first protective shell (2).

4. A shock absorbing device for a pipeline valve according to claim 1, characterized in that: The first shock-absorbing bellows (22) and the second shock-absorbing bellows (23) are both threadedly connected to the first pipeline valve (1) via screws and nuts, and the other ends of the first shock-absorbing bellows (22) and the second shock-absorbing bellows (23) are fixedly connected to one end of the first throttling ring (21) and the second throttling ring (24).

5. The shock absorbing device for pipeline valve according to claim 1, characterized in that: The water hammer elimination device (5) comprises a valve body (51), a lower piston disc (52) is provided at one end inside the valve body (51), a piston (53) is provided on one side of the lower piston disc (52), and a first sealing ring (54) and a second sealing ring (55) are both sleeved on both sides of the piston (53).

6. A shock absorbing device for a pipeline valve according to claim 5, characterized in that: The other end of the valve body (51) is fixedly connected to one end of the pressure gauge (57) through the cavity (56), and the lower end of the gas injection valve (58) is fixedly connected to the other end of the valve body (51) through the cavity (56).

Images