A water hammer elimination tank

Abstract

The present invention provides a water hammer eliminator, comprising a tank body, a cylinder body, a float and a sealing ring. The lower end of the tank body is connected to the main pipeline through a connecting pipe, an air outlet is arranged at the upper end of the tank body, a sealing ring is arranged at the inner edge of the air outlet, a cylinder body is arranged inside the tank body, a float body is arranged inside the cylinder body, and the cylinder body and the air outlet are arranged coaxially. The water body in the main pipeline can be connected to the tank body, and the water body can lift the float body to block the air outlet. The water hammer eliminator described in the present invention has a cylinder body that is not sealed below and is connected to the tank body. The float body can be driven to float up to block the sealing ring through the water body. The water body can be poured into the cylinder body through the air pressure inside the tank body. Self-control is achieved through medium pressure. No air compressor and electronic control system are required. The structure is simple and the failure rate is low.

Description

Technical Field

[0001] The invention belongs to the field of pipeline water delivery systems, and in particular relates to a water hammer elimination tank. Background Art

[0002] ‌Water hammer eliminator‌ is a device used to reduce the impact of water hammer on pipeline systems. Water hammer refers to the sudden change in flow rate (such as sudden closing or opening of a valve) in a fluid pipeline, which causes a sharp change in pressure in the pipeline and generates a huge impact force. This phenomenon is called water hammer. The water hammer eliminator of the prior art is installed in the pipeline system to prevent the pressure in the pipeline from rising and negative pressure. The water hammer eliminator of the prior art is usually equipped with a compressor to control the pressure of the medium inside the tank, and the compressor also needs to be equipped with a control system to control the output power of the compressor, and the supporting cost is relatively high. Summary of the invention

[0003] In view of this, the present invention aims to propose a water hammer eliminator to solve the problem that the prior art water hammer eliminator is usually equipped with a compressor to control the pressure of the medium inside the tank body, and the compressor also needs to be equipped with a control system to control the output power of the compressor, resulting in high supporting costs.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows: A water hammer elimination tank comprises a tank body, a cylinder body, a float and a sealing ring. The lower end of the tank body is connected to a main pipeline through a connecting pipe, an air outlet is arranged at the upper end of the tank body, a sealing ring is arranged at the inner edge of the air outlet, a cylinder body is arranged inside the tank body, a float body is arranged inside the cylinder body, and the cylinder body and the air outlet are arranged coaxially. The water body in the main pipeline can be connected to the tank body, and the water body can lift the float body to seal the air outlet.

[0005] Furthermore, an upper pipe is installed on the air outlet, and the upper pipe is a protective structure of the air outlet, one end of the upper pipe is connected to the tank body, and the other end of the upper pipe is facing the air.

[0006] Furthermore, a guide sleeve is installed in the air outlet through a connecting plate, a connecting rod is slidably arranged in the guide sleeve, a valve flap is arranged at the upper end of the connecting rod, and a floating body is arranged at the lower end of the connecting rod.

[0007] Furthermore, the float is a cylindrical structure, and the outer diameter of the float is smaller than the inner circle of the cylinder, and the upper end of the cylinder is sealed and connected to the inside of the tank.

[0008] Furthermore, an inner groove is provided at the lower end of the float.

[0009] Furthermore, a plurality of supporting legs are provided at the lower end of the tank body.

[0010] Compared with the prior art, the water hammer elimination tank described in the present invention has the following beneficial effects: (1) The water hammer relieving tank described in the present invention has a cylinder body that is not sealed below and is connected to the inside of the tank body. The water body can drive the float to float up to seal the sealing ring. The air pressure inside the tank body can cause the water to flow into the cylinder body. Self-control is achieved through medium pressure, and no air compressor and electronic control system are required. The structure is simple and the failure rate is low.

[0011] (2) In the water hammer elimination tank described in the present invention, an upper pipe is installed on the air outlet, and the upper pipe is an L-shaped structure. One end of the upper pipe is connected to the inside of the tank body, and the other end of the upper pipe is connected to the external atmosphere. The upper pipe is a protective structure of the cylinder body to prevent debris from falling into the cylinder body and affecting the sealing performance of the sealing ring and the sliding performance of the float.

[0012] (3) In the water hammer relieving tank described in the present invention, the length of the connecting rod between the valve disc and the float is adjustable during installation, and the water level in the cylinder will not exceed the float, thereby preventing debris from getting stuck in the sealing valve seat. In addition, the air-to-water ratio under steady-state conditions is adjustable, and the air-to-water ratio under steady-state conditions can be adjusted by adjusting the height of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings: Figure 1 It is a cross-sectional schematic diagram of a water hammer elimination tank according to an embodiment of the present invention; Figure 2 It is a cross-sectional schematic diagram of the lower end of the water body blocking cylinder according to an embodiment of the present invention; Figure 3 It is a cross-sectional schematic diagram of a float pushing a valve disc to seal a sealing ring according to an embodiment of the present invention.

[0014] Description of reference numerals: 1-tank body; 2-cylinder body; 3-floating body; 4-sealing ring; 5-connecting pipe; 6-main pipeline; 7-water body; 8-upper pipeline; 9-guide sleeve; 10-connecting rod; 11-valve disc; 12-inner groove; 13-support foot. DETAILED DESCRIPTION

[0015] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

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

[0019] like Figure 1-Figure 3 As shown, a water hammer elimination tank comprises a tank body 1, a cylinder body 2, a float 3 and a sealing ring 4. The lower end of the tank body 1 is connected to a main pipeline 6 through a connecting pipe 5. An air outlet is arranged at the upper end of the tank body 1, and a sealing ring 4 is arranged at the inner edge of the air outlet. A cylinder body 2 is arranged inside the tank body 1, and a float 3 is arranged inside the cylinder body 2. The cylinder body 2 is coaxially arranged with the air outlet. The water body 7 in the main pipeline 6 can be connected to the tank body 1, and the water body 7 can lift the float 3 to block the air outlet. Figure 1 As shown, a cylinder 2 is placed at the upper air outlet, and the bottom of the cylinder 2 is not sealed and is connected to the tank body 1. The water body 7 can drive the float 3 to float up to seal the sealing ring 4. The air pressure inside the tank body 1 can make the water body 7 pour into the cylinder 2. Self-control is achieved through medium pressure, and no air compressor and electronic control system are required. The structure is simple and the failure rate is low.

[0020] An upper pipe 8 is installed on the air outlet, and the upper pipe 8 is a protective structure of the air outlet. The upper pipe 8 is any one of an arc-shaped structure, an L-shaped structure or a V-shaped structure. The upper pipe 8 in this embodiment is an L-shaped structure. One end of the upper pipe 8 is connected to the tank body 1, and the other end of the upper pipe 8 is connected to the external atmosphere. The upper pipe 8 is a protective structure of the cylinder body 2 to prevent debris from falling into the cylinder body 2 and affecting the sealing performance of the sealing ring 4 and the sliding performance of the float 3.

[0021] A guide sleeve 9 is installed in the air outlet through a connecting plate, a connecting rod 10 is slidably arranged in the guide sleeve 9, a valve disc 11 is arranged at the upper end of the connecting rod 10, a float 3 is arranged at the lower end of the connecting rod 10, the float 3 is a cylindrical structure, and the outer diameter of the float 3 is smaller than the inner circle of the cylinder 2, the upper end of the cylinder 2 is sealed and connected to the inside of the tank body 1, during installation, the length of the connecting rod 10 between the valve disc 11 and the float 3 is adjustable, the water level in the cylinder 2 will not exceed the float 3, avoiding debris from getting stuck in the sealing valve seat, and the air-water ratio under steady-state conditions is adjustable, and the air-water ratio under steady-state conditions is adjusted by adjusting the height of the cylinder 2.

[0022] An inner groove 12 is provided at the lower end of the float 3 to improve the buoyancy of the float 3 in the water body 7 , and a plurality of legs 13 are provided at the lower end of the tank body 1 to improve the stability of the tank body 1 .

[0023] Working principle of a water hammer elimination tank 1. In the initial state, the water hammer eliminator tank and the main pipeline 6 are filled with air. At this time, the valve flap 11 and the float 3 are in an open state due to gravity, and the interior of the water hammer eliminator tank is connected to the atmosphere.

[0024] 2. Water starts to flow into the main pipe 6, and the air in the water hammer elimination tank is discharged through the cylinder 2.

[0025] 3. The water level continues to rise, the lower opening of the cylinder 2 is sealed, and part of the air is trapped between the cylinder 2 and the tank body 1 and cannot be discharged.

[0026] 4. As the water pressure increases, the air is compressed, and the water level in cylinder 2 continues to rise, and the water level in cylinder 2 is higher than the water level in tank 1.

[0027] 5. The pressure continues to increase, the water level in the cylinder 2 continues to rise, the buoy or float 3 floats up, and pushes the valve disc 11 upward to close.

[0028] 6. The pressure continues to increase to the steady-state working pressure, the air continues to be compressed, and there is a part of compressed air and a part of water in the water hammer elimination tank.

[0029] 7. Stop the pump, the pressure in the main pipeline 6 drops, and the water in the water hammer elimination tank enters the main pipeline 6 to prevent the main pipeline 6 from forming a negative pressure and protect the pipeline safety.

[0030] 8. When the water level drops to approach the lower port of the cylinder 2, the valve disc 11 and the float 3 lose buoyancy and drop to open.

[0031] 9. The water level continues to drop and air begins to enter the water hammer elimination tank.

[0032] 10. The water backflow in the pipeline is transformed into positive water hammer pressure, and the water enters the water hammer elimination tank, such as Figure 3 At this time, the compressed air can absorb the water hammer in the pipeline and prevent destructive water hammer pressure from occurring in the pipeline.

[0033] 11. The height of the cylinder 2 can be adjusted to adjust the gas-water ratio under steady-state conditions.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A water hammer elimination tank, characterized in that: The invention comprises a tank body (1), a cylinder body (2), a floating body (3) and a sealing ring (4); the lower end of the tank body (1) is connected to a main pipeline (6) through a connecting pipe (5); an air outlet is arranged at the upper end of the tank body (1); a sealing ring (4) is arranged at the inner edge of the air outlet; a cylinder body (2) is arranged inside the tank body (1); a floating body (3) is arranged inside the cylinder body (2); and the cylinder body (2) and the air outlet are arranged coaxially; a water body (7) in the main pipeline (6) can be connected to the tank body (1); and the water body (7) can lift the floating body (3) to seal the air outlet.

2. A water hammer elimination tank according to claim 1, characterized in that: An upper pipe (8) is installed on the air outlet, and the upper pipe (8) is a protective structure of the air outlet. One end of the upper pipe (8) is connected to the tank body (1), and the other end of the upper pipe (8) is open to air.

3. A water hammer elimination tank according to claim 1, characterized in that: A guide sleeve (9) is installed in the air outlet through a connecting plate, a connecting rod (10) is slidably arranged in the guide sleeve (9), a valve flap (11) is arranged at the upper end of the connecting rod (10), and a floating body (3) is arranged at the lower end of the connecting rod (10).

4. A water hammer elimination tank according to claim 1, characterized in that: The float (3) is a cylindrical structure, and the outer diameter of the float (3) is smaller than the inner circle of the cylinder (2). The upper end of the cylinder (2) is sealed and connected to the inside of the tank (1).

5. The water hammer elimination tank according to claim 1, characterized in that: An inner groove (12) is provided at the lower end of the floating body (3).

6. A water hammer elimination tank according to claim 1, characterized in that: A plurality of supporting legs (13) are arranged at the lower end of the tank body (1).

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