Water hammer prevention device for water conveying pipeline

Abstract

The utility model provides a water supply pipeline water hammer prevention device, which belongs to the technical field of water supply pipelines and comprises a connecting pipe, a first energy absorption mechanism and a second energy absorption mechanism. An external connecting hole is formed in the connecting pipe, the first energy absorption mechanism is fixedly installed on the outer side of the connecting pipe, a first sliding cavity and a first elastic moving structure are arranged on the first energy absorption mechanism, and the length direction of the first sliding cavity is perpendicular to the axis direction of the connecting pipe; the second energy absorption mechanism is fixedly mounted in the connecting pipe; a second sliding cavity and a second elastic moving structure are arranged on the second energy absorption mechanism, and the length direction of the second sliding cavity is parallel to the axis direction of the connecting pipe; an opening is formed in the second energy absorption mechanism, and the direction of the opening is opposite to the direction of water flow in the connecting pipe. The water supply pipeline water hammer prevention device can absorb and buffer water flow radial impact force and axial impact force generated in the connecting pipe due to the water hammer effect at the same time, and the elimination effect on the water hammer is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pipelines, and more specifically relates to a water hammer prevention device for water pipelines. Background Art

[0002] In water supply systems, during operations such as changing the fluid path, fluid pressure, and fluid flow in pipelines, the incompressibility of the liquid can cause water hammer or water hammer in the pipeline. This is especially prominent when rapidly cutting off or regulating the water flow. This phenomenon can cause problems such as valve strain, pipeline deformation, and instrument damage. In severe cases, it can cause pipeline rupture, leading to paralysis of the entire drainage and water supply system. Currently, water hammer arresters are often installed on pipelines. Without blocking the flow of fluid, water hammer arresters effectively eliminate the irregular water hammer waves caused by external water hammer and surges that may be generated by various types of fluids in the transmission system, thereby eliminating destructive shock waves and achieving a protective purpose. However, existing water hammer arresters have a single direction for eliminating water hammer, resulting in poor water hammer elimination effects. Utility Model Content

[0003] The purpose of the utility model is to provide a water hammer prevention device for a water supply pipeline, so as to solve the technical problem in the prior art that the water hammer eliminator has a single direction for eliminating water hammer, resulting in poor elimination effect of water hammer.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a water hammer prevention device for a water pipeline, comprising:

[0005] A connecting pipe, used to be installed between two transmission pipes; the connecting pipe has an external connection hole on its outer surface;

[0006] a first energy absorbing mechanism fixedly mounted on the outer side of the connecting tube, the first energy absorbing mechanism being provided with a first sliding cavity connected to the external connection hole and a first elastic movable structure mounted in the first sliding cavity and sliding along the length direction of the first sliding cavity, wherein the length direction of the first sliding cavity is perpendicular to the axial direction of the connecting tube;

[0007] The second energy absorbing mechanism is fixedly installed in the connecting pipe; the second energy absorbing mechanism is provided with a second sliding cavity and a second elastic movable structure installed in the second sliding cavity and sliding along the length direction of the second sliding cavity, and the length direction of the second sliding cavity is parallel to the axial direction of the connecting pipe; the second energy absorbing mechanism is provided with an opening connected to the interior of the connecting pipe, and the direction of the opening is opposite to the direction of water flow in the connecting pipe.

[0008] In a possible implementation, the first elastic movable structure includes:

[0009] A first housing is fixedly mounted on the connecting pipe; a lower end of the first housing is docked with the external connection hole, and an interior of the first housing is the first sliding cavity;

[0010] a first elastic member, disposed in the first sliding cavity;

[0011] The first sliding block is slidably connected to the first sliding cavity and is sealed to the inner wall of the first sliding cavity; the first sliding block is connected to the first elastic member.

[0012] In a possible implementation, the first elastic member is compressed air, and a pressure gauge for monitoring the pressure in the first sliding cavity is provided on the first housing.

[0013] In a possible implementation, the second elastic movable structure includes:

[0014] The second housing is arranged in a transverse direction, and the opening is opened at one end of the second housing, and the interior of the second housing is the second sliding cavity;

[0015] a second elastic member, disposed in the second sliding cavity;

[0016] The second sliding block is slidably connected to the second sliding cavity and is sealed to the inner wall of the second sliding cavity; the second sliding block is connected to the second elastic member.

[0017] In a possible implementation manner, the second elastic member is a spring.

[0018] In one possible implementation, the second shell includes a mounting plate and a mounting sleeve arranged in a T-shaped structure, the mounting plate is docked and installed at the end of the connecting pipe, and the mounting sleeve is located in the connecting pipe; the second sliding cavity is arranged in the mounting sleeve; the mounting plate is provided with a through hole connected to the opening and a water transfer hole for conveying water flow.

[0019] In a possible implementation, an end portion of the mounting sleeve away from the mounting plate is provided with a streamlined surface for reducing resistance.

[0020] In a possible implementation, the axis of the mounting sleeve is collinear with the axis of the connecting pipe, and the mounting plate includes:

[0021] a first annular plate connected to the connecting pipe;

[0022] a second annular plate installed inside the first annular plate and coaxially arranged with the first annular plate; the opening is provided on the second annular plate, the water delivery hole is formed between the first annular plate and the second annular plate, and the mounting sleeve is fixedly connected to the second annular plate;

[0023] The connecting rib is installed between the first annular plate and the second annular plate, and two ends thereof are fixedly connected to the first annular plate and the second annular plate respectively.

[0024] In a possible implementation, the inner diameter of the first annular plate is equal to the inner diameter of the connecting pipe, and the end of the connecting rib close to the mounting sleeve is provided with a streamlined surface for reducing resistance.

[0025] In a possible implementation, a sealing gasket is provided between the mounting plate and the end surface of the connecting pipe.

[0026] The beneficial effect of the water hammer prevention device for water pipelines provided by the present invention is that, compared to the prior art, when installing the water pipeline, the connecting pipe is installed between two sections of the transmission pipe, and the connecting pipe is located near the valve. When water hammer occurs in the water pipeline, a portion of the impact load within the transmission pipe and the connecting pipe acts on the inner wall of the connecting pipe and on the first elastic movable structure of the first energy-absorbing mechanism. The first elastic movable structure overcomes the elastic force and moves in the first sliding cavity in a direction perpendicular to the axis of the connecting pipe, thereby absorbing the radial impact force of the water flow. The other portion of the impact load acts on the second elastic movable structure of the second energy-absorbing mechanism through the opening along the axis of the connecting pipe. The second elastic movable structure overcomes the elastic force and moves in the second sliding cavity in a direction parallel to the axis of the connecting pipe, thereby absorbing the axial impact force of the water flow. In this way, the radial and axial impact forces of the water flow generated in the connecting pipe due to the water hammer effect are simultaneously absorbed and buffered, thereby improving the effectiveness of eliminating water hammer. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] Figure 1 A cross-sectional view of a water hammer prevention device for a water pipeline provided by an embodiment of the utility model;

[0029] Figure 2 A front view of a water hammer prevention device for a water pipeline provided by an embodiment of the utility model;

[0030] Figure 3 A cross-sectional view of a second energy absorbing mechanism provided in an embodiment of the present utility model;

[0031] Figure 4 A side view of a second energy absorbing mechanism provided in an embodiment of the present utility model;

[0032] Figure 5 A cross-sectional view of a connecting rib provided in an embodiment of the present utility model;

[0033] Figure 6 A schematic diagram of the use status of the water hammer prevention device for a water pipeline provided by an embodiment of the utility model.

[0034] Among them, the reference numerals in the figures are:

[0035] 1. Connecting pipe; 11. External connection hole; 12. Flange; 2. First energy-absorbing mechanism; 21. First sliding cavity; 22. First elastic movable structure; 23. First shell; 24. First elastic member; 25. First sliding block; 26. Pressure gauge; 3. Second energy-absorbing mechanism; 31. Second sliding cavity; 32. Second elastic movable structure; 33. Opening; 34. Second shell; 35. Second elastic member; 36. Second sliding block; 4. Mounting plate; 41. Through hole; 42. Water delivery hole; 43. First annular plate; 44. Second annular plate; 45. Connecting rib; 46. Sealing gasket; 5. Mounting sleeve; 51. Streamlined surface; 6. Transmission pipe. DETAILED DESCRIPTION

[0036] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0037] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0038] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0040] See also Figures 1 to 6 Now, the water hammer prevention device for water supply pipelines provided by the utility model is described. A water hammer prevention device for a water supply pipeline includes a connecting pipe 1, a first energy absorbing mechanism 2, and a second energy absorbing mechanism 3; the connecting pipe 1 is used to be installed between two transmission pipes 6; an external connection hole 11 is provided on the outer side of the connecting pipe 1; the first energy absorbing mechanism 2 is fixedly installed on the outer side of the connecting pipe 1, and the first energy absorbing mechanism 2 is provided with a first sliding cavity 21 connected to the external connection hole 11 and a first elastic movable structure 22 installed in the first sliding cavity 21 and sliding along the length direction of the first sliding cavity 21, and the length direction of the first sliding cavity 21 is perpendicular to the axial direction of the connecting pipe 1; the second energy absorbing mechanism 3 is fixedly installed in the connecting pipe 1; the second energy absorbing mechanism 3 is provided with a second sliding cavity 31 and a second elastic movable structure 32 installed in the second sliding cavity 31 and sliding along the length direction of the second sliding cavity 31, and the length direction of the second sliding cavity 31 is parallel to the axial direction of the connecting pipe 1; the second energy absorbing mechanism 3 is provided with an opening 33 connected to the interior of the connecting pipe 1, and the direction of the opening 33 is opposite to the direction of water flow in the connecting pipe 1.

[0041] Compared to the prior art, the present invention provides a water hammer prevention device for water pipelines. When installing the water pipeline, the connecting pipe 1 is installed between two sections of the transmission pipe 6, with the connecting pipe 1 positioned near the valve. When water hammer occurs within the water pipeline, a portion of the impact load within the transmission pipe 6 and the connecting pipe 1 acts on the inner wall of the connecting pipe 1 and on the first elastic movable structure 22 of the first energy-absorbing mechanism 2. The first elastic movable structure 22 overcomes the elastic force and moves within the first sliding cavity 21 in a direction perpendicular to the axis of the connecting pipe 1, thereby absorbing the radial impact force of the water flow. The other portion of the impact load acts along the axis of the connecting pipe 1 through the opening 33 on the second elastic movable structure 32 of the second energy-absorbing mechanism 3. The second elastic movable structure 32 overcomes the elastic force and moves within the second sliding cavity 31 in a direction parallel to the axis of the connecting pipe 1, thereby absorbing the axial impact force of the water flow. In this way, both the radial and axial impact forces of the water flow generated within the connecting pipe 1 due to the water hammer effect are simultaneously absorbed and buffered, improving the effectiveness of water hammer prevention.

[0042] See also Figure 1 and Figure 2As a specific embodiment of the water hammer prevention device for a water supply pipeline provided by the utility model, the first elastic movable structure 22 includes a first shell 23, a first elastic member 24 and a first sliding block 25; the first shell 23 is fixedly installed on the connecting pipe 1; the lower end of the first shell 23 is connected to the external connection hole 11, and the interior of the first shell 23 is a first sliding cavity 21; the first elastic member 24 is disposed in the first sliding cavity 21; the first sliding block 25 is slidably connected to the first sliding cavity 21 and is sealed with the inner wall of the first sliding cavity 21; the first sliding block 25 is connected to the first elastic member 24; the first shell 23 is vertically fixedly installed on the outside of the connecting pipe 1 and is arranged perpendicular to the connecting pipe 1, the lower end of the first shell 23 is connected to the external connection hole 11, and the first sliding cavity 21 is located inside the first shell 23; the first elastic member 24 is installed in the first shell 23 and slidably connects the first sliding block 25 to the second sliding cavity 31 of the second shell 34 and is arranged near the external connection hole 11. The first elastic member 24 is located within the first sliding cavity 21, and the first sliding block 25 is connected to the first elastic member 24. When a water hammer effect occurs in the water pipeline, the impact force generated by the obstructed water flow passes through the external connection hole 11 and acts on the first sliding block 25, causing the first sliding block 25 to move within the first sliding cavity 21, pressing against the first elastic member 24 and producing a cushioning effect.

[0043] See also Figure 1 In one embodiment of the water hammer prevention device for water pipelines provided by the present invention, the first elastic member 24 is compressed air, and a pressure gauge 26 is provided on the first housing 23 to monitor the pressure within the first sliding chamber 21. Leveraging the compressibility of air to generate a certain degree of elasticity, the first sliding block 25 acts on the compressed air as it moves within the first sliding chamber 21, absorbing impact force. The pressure gauge 26 monitors the compressed air pressure, ensuring that the compressed air, acting as the second elastic member 35, provides effective elastic force.

[0044] See also Figure 1 、 Figure 3 and Figure 4As a specific embodiment of the water hammer prevention device for a water supply pipeline provided by the present invention, the second elastic movable structure 32 includes a second shell 34, a second elastic member 35 and a second sliding block 36. The second shell 34 is arranged horizontally, and the opening 33 is opened at one end of the second shell 34. The interior of the second shell 34 is a second sliding cavity 31; the second elastic member 35 is arranged in the second sliding cavity 31; the second sliding block 36 is slidably connected to the second sliding cavity 31 and is sealed with the inner wall of the second sliding cavity 31; the second sliding block 36 is connected to the second elastic member 35; the second shell 34 is horizontally installed in the connecting pipe 1 and is parallel to the horizontal direction, the opening 33 is opened at one end of the second shell 34 near the valve, the second elastic member 35 is installed in the second shell 34, and the second sliding block 36 is slidably connected to the second sliding cavity 31 of the second shell 34 through the opening 33, and is connected to the second elastic member 35. When a water hammer effect occurs in the water pipe, the impact force generated by the obstructed water flow acts on the second sliding block 36 , and the second sliding block 36 presses against the second elastic member 35 to produce a buffering effect.

[0045] Preferably, the second elastic member 35 is a spring.

[0046] See also Figure 1 、 Figure 3 and Figure 4 As a specific embodiment of the water hammer prevention device for a water supply pipeline provided by the present invention, the second shell 34 includes a mounting plate 4 and a mounting sleeve 5 arranged in a T-shaped structure. The mounting plate 4 is docked and installed at the end of the connecting pipe 1, and the mounting sleeve 5 is located in the connecting pipe 1; the second sliding cavity 31 is provided in the mounting sleeve 5; the mounting plate 4 is provided with a through hole 41 connected to the opening 33 and a water delivery hole 42 for conveying water flow; with the help of the mounting sleeve 5 of the T-shaped mounting plate 4, the second shell 34 and the connecting pipe 1 are easily installed; specifically, the second elastic member 35 and the second sliding block 36 are sequentially installed in the mounting sleeve 5, and the mounting sleeve 5 first passes through the end of the connecting pipe 1 and enters the connecting pipe 1, and the mounting plate 4 is docked and installed at the outer end of the second shell 34, and the second elastic member 35 and the second sliding block 36 can move stably through the mounting sleeve 5, and the mounting plate 4 is used to firmly and securely fix the mounting sleeve 5 on the connecting pipe 1.

[0047] See also Figure 1 、 Figure 3 and Figure 4 As a specific embodiment of the water hammer prevention device for a water supply pipeline provided by the utility model, a streamlined surface 51 for reducing resistance is provided at the end of the mounting sleeve 5 away from the mounting plate 4; the streamlined surface 51 is provided on one end surface of the mounting sleeve 5. When the water flows, when the water impacts the mounting sleeve 5, the streamlined surface 51 reduces the resistance of the mounting sleeve 5 to the water flow.

[0048] See also Figure 1 、 Figure 3 and Figure 4 As a specific embodiment of the water hammer prevention device for a water supply pipeline provided by the present invention, the axis of the mounting sleeve 5 is colinear with the axis of the connecting pipe 1, and the mounting plate 4 includes a first annular plate 43, a second annular plate 44 and a connecting rib 45; the first annular plate 43 is connected to the connecting pipe 1; the second annular plate 44 is mounted in the first annular plate 43 and is coaxially arranged with the first annular plate 43; the opening 33 is provided on the second annular plate 44, a water delivery hole 42 is formed between the first annular plate 43 and the second annular plate 44, and the mounting sleeve 5 is fixedly connected to the second annular plate 44; the connecting rib 45 is installed between the first annular plate 43 and the second annular plate 44, and the two ends are fixedly connected to the first annular plate 43 and the second annular plate 44 respectively; the second annular plate 44 is installed in the first annular plate 43, and the second annular plate 44 is coaxially arranged with the first annular plate 43; and the connecting rib 45 is provided between the first annular plate 43 and the second annular plate 44 so that the first annular plate 43 and the second annular plate 44 are fixedly connected as a whole. With this structure of the mounting plate 4, a water delivery hole 42 is formed between the first annular plate 43, the second annular plate 44, and the connecting rib 45, facilitating the flow of water through the connecting pipe 1. The opening 33 provided on the second annular plate 44 facilitates the water hammer effect through the opening 33 and acts on the second sliding block 36.

[0049] See also Figure 1 、 Figures 3 to 5 As a specific embodiment of the water hammer prevention device for a water supply pipeline provided by the present invention, the inner diameter of the first annular plate 43 is equal to the inner diameter of the connecting pipe 1, and the end of the connecting rib 45 near the mounting sleeve 5 is provided with a streamlined surface 51 for reducing resistance. That is, flanges 12 are provided at each end of the connecting pipe 1. When the mounting plate 4 is installed on the connecting pipe 1, the first annular plate 43 abuts against the flange 12. The inner diameter of the first annular plate 43 is set equal to the inner diameter of the flange 12. Therefore, the first annular plate 43 does not hinder the flow of water in the connecting pipe 1, and also ensures good connection strength and sealing performance between the first annular plate 43 and the connecting pipe 1. At the same time, the end of the connecting rib 45 near the mounting sleeve 5 has a streamlined surface 51. When the water flows and impacts the mounting plate 4, the streamlined surface 51 reduces the resistance of the multiple connecting ribs 45 to the water flow.

[0050] See also Figure 1 、 Figure 2 、 Figure 6As a specific embodiment of the water hammer prevention device for a water supply pipeline provided by the utility model, a sealing gasket 46 is provided between the mounting plate 4 and the end face of the connecting pipe 1; flanges 12 are respectively provided at the ends of the connecting pipe 1. When the mounting plate 4 is installed at the end of the connecting pipe 1, the mounting plate 4 is docked on the flange 12, and a sealing gasket 46 is provided between the flange 12 and the mounting plate 4, so that a good seal is formed between the flange 12 and the mounting plate 4, and water leakage will not occur.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A water hammer prevention device for a water pipeline, characterized in that: include: A connecting pipe, used to be installed between two transmission pipes; the connecting pipe has an external connection hole on its outer surface; a first energy absorbing mechanism fixedly mounted on the outer side of the connecting tube, the first energy absorbing mechanism being provided with a first sliding cavity connected to the external connection hole and a first elastic movable structure mounted in the first sliding cavity and sliding along the length direction of the first sliding cavity, wherein the length direction of the first sliding cavity is perpendicular to the axial direction of the connecting tube; The second energy absorbing mechanism is fixedly installed in the connecting pipe; the second energy absorbing mechanism is provided with a second sliding cavity and a second elastic movable structure installed in the second sliding cavity and sliding along the length direction of the second sliding cavity, and the length direction of the second sliding cavity is parallel to the axial direction of the connecting pipe; the second energy absorbing mechanism is provided with an opening connected to the interior of the connecting pipe, and the direction of the opening is opposite to the direction of water flow in the connecting pipe.

2. The water hammer prevention device for water pipelines according to claim 1, characterized in that: The first elastic movable structure comprises: A first housing is fixedly mounted on the connecting pipe; a lower end of the first housing is docked with the external connection hole, and an interior of the first housing is the first sliding cavity; a first elastic member, disposed in the first sliding cavity; The first sliding block is slidably connected to the first sliding cavity and is sealed to the inner wall of the first sliding cavity; the first sliding block is connected to the first elastic member.

3. The water hammer prevention device for water pipelines according to claim 2, characterized in that: The first elastic member is compressed air, and the first housing is provided with a pressure gauge for monitoring the pressure in the first sliding cavity.

4. The water hammer prevention device for water pipelines according to claim 1, characterized in that: The second elastic movable structure includes: The second housing is arranged in a transverse direction, and the opening is opened at one end of the second housing, and the interior of the second housing is the second sliding cavity; a second elastic member, disposed in the second sliding cavity; The second sliding block is slidably connected to the second sliding cavity and is sealed to the inner wall of the second sliding cavity; the second sliding block is connected to the second elastic member.

5. The water hammer prevention device for water pipelines according to claim 4, characterized in that: The second elastic member is a spring.

6. The water hammer prevention device for water pipelines according to claim 4, characterized in that: The second shell includes a mounting plate and a mounting sleeve arranged in a T-shaped structure. The mounting plate is docked and installed on the end of the connecting pipe, and the mounting sleeve is located in the connecting pipe; the second sliding cavity is arranged in the mounting sleeve; the mounting plate is provided with a through hole connected to the opening and a water transfer hole for conveying water flow.

7. The water hammer prevention device for a water pipeline according to claim 6, characterized in that: An end portion of the mounting sleeve away from the mounting plate is provided with a streamlined surface for reducing resistance.

8. The water hammer prevention device for a water pipeline according to claim 6, characterized in that: The axis of the mounting sleeve is collinear with the axis of the connecting pipe, and the mounting plate comprises: a first annular plate connected to the connecting pipe; a second annular plate installed inside the first annular plate and coaxially arranged with the first annular plate; the opening is provided on the second annular plate, the water delivery hole is formed between the first annular plate and the second annular plate, and the mounting sleeve is fixedly connected to the second annular plate; The connecting rib is installed between the first annular plate and the second annular plate, and two ends thereof are fixedly connected to the first annular plate and the second annular plate respectively.

9. The water hammer prevention device for a water pipeline according to claim 8, characterized in that: The inner diameter of the first annular plate is equal to the inner diameter of the connecting pipe, and the end of the connecting rib close to the mounting sleeve is provided with a streamlined surface for reducing resistance.

10. The water hammer prevention device for water pipelines according to claim 6, characterized in that: A sealing gasket is provided between the mounting plate and the end surface of the connecting pipe.

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