Water hammer eliminating tank

Abstract

The utility model provides a water hammer eliminating tank which comprises a tank body, a cylinder body, a floating body and a sealing ring, the lower end of the tank body is connected with a main pipeline through a connecting pipe, an air outlet is formed in the upper end of the tank body, the sealing ring is arranged on the inner edge of the air outlet, the cylinder body is arranged in the tank body, the floating body is arranged in the cylinder body, and the cylinder body and the air outlet are coaxially arranged. A water body in the main pipeline can be communicated into the tank body, and the water body can lift the floating body to plug the air outlet. According to the water hammer eliminating tank, the lower portion of the cylinder body is not closed and is communicated with the interior of the tank body, water can drive the floating body to float upwards to plug the sealing ring, the water can be poured into the cylinder body through air pressure in the tank body, automatic control is achieved through medium pressure, an air compressor and an electric control system are not needed, the structure is simple, and the failure rate is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pipeline water delivery system field especially, it is a kind of water hammer elimination tank. BACKGROUND

[0002] Water hammer elimination tank is a kind of equipment for reducing the influence of water hammer phenomenon to pipeline system. Wherein water hammer phenomenon refers to in fluid pipeline, due to the sudden change of flow velocity (such as valve suddenly closes or opens), lead to the sharp change of pressure in pipeline, produce huge impact force, this phenomenon is called water hammer, the water hammer elimination tank of prior art is installed in pipeline system, can prevent the pressure rise in pipeline and the situation of negative pressure, the water hammer elimination tank of prior art usually is equipped with a compressor, to complete the control to the pressure of medium pressure in tank body, and compressor also needs to be equipped with a control system, to complete the control to the output power of compressor, and the cost of supporting is higher. SUMMARY

[0003] Therefore, the utility model aims at providing a kind of water hammer elimination tank to solve the problem of the water hammer elimination tank of prior art usually is equipped with a compressor, to complete the control to the pressure of medium pressure in tank body, and compressor also needs to be equipped with a control system, to complete the control to the output power of compressor, and the cost of supporting is higher.

[0004] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0005] A kind of water hammer elimination tank, including tank body, cylinder, float and sealing ring, tank body lower end is connected with main pipeline by connecting pipe, tank body upper end is provided with gas outlet, the inner edge of gas outlet is provided with sealing ring, tank body is provided with cylinder, float is provided in cylinder, and cylinder and gas outlet are coaxially arranged, water body in main pipeline can be connected to tank body, and water body can lift float and seal gas outlet.

[0006] Further, the gas outlet is installed with upper pipeline, and the upper pipeline is the protective structure of the gas outlet, one end of the upper pipeline is communicated to the tank body, and the other end of the upper pipeline is open.

[0007] Further, the gas outlet is installed with guide sleeve through connecting plate, connecting rod is slidably arranged in guide sleeve, valve flap is arranged at the upper end of connecting rod, and float is arranged at the lower end of connecting rod.

[0008] Further, the float is in cylindrical structure, and the outer diameter of the float is less than the inner ring of the cylinder, and the upper end of the cylinder is sealingly connected to the inside of the tank body.

[0009] Further, the lower end of the float is provided with an inner groove.

[0010] Further, the lower end of the tank body is provided with a plurality of supporting legs.

[0011] Compared with the prior art, the water hammer elimination tank has the following beneficial effects:

[0012] (1) The water hammer elimination tank has the following beneficial effects:

[0013] (2) The water hammer elimination tank has the following beneficial effects:

[0014] (3) The water hammer elimination tank has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings, which form a part of the present application, are used to provide further understanding of the present application, and serve as an explanation of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0016] Fig. 1 FIG. 1 is a sectional view of a water hammer elimination tank according to an embodiment of the present application;

[0017] Fig. 2 FIG. 2 is a sectional view of a lower end of a water body blocking cylinder according to an embodiment of the present application;

[0018] Fig. 3 FIG. 3 is a sectional view of a floating body pushing a valve flap to block a sealing ring according to an embodiment of the present application.

[0019] KEY

[0020] 1-tank body; 2-cylinder; 3-floating body; 4-sealing ring; 5-connection pipe; 6-main pipe; 7-water body; 8-upper pipe; 9-guide sleeve; 10-connection rod; 11-valve flap; 12-internal recess; 13-branch leg. DETAILED DESCRIPTION

[0021] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0022] In the description of the utility model, it needs to be understood that, the orientation or positional relation indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or positional relation shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0023] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood through specific circumstances.

[0024] The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] As Figs. 1-3 shown, a water hammer elimination tank, including tank body 1, cylinder 2, float 3 and sealing ring 4, tank body 1 lower end is connected with main pipeline 6 through connecting pipe 5, tank body 1 upper end is provided with gas outlet, the inner edge of gas outlet is provided with sealing ring 4, tank body 1 inside is provided with cylinder 2, cylinder 2 is provided with float 3, and cylinder 2 is coaxially arranged with gas outlet, water body 7 in main pipeline 6 can be communicated to tank body 1, and water body 7 can lift float 3 to block the gas outlet, as Fig. 1 shown, a cylinder 2 is put from the gas outlet, and the lower part of the cylinder 2 is not closed and is communicated with the tank 1, the water body 7 can drive the float 3 to float and block the sealing ring 4, the water body 7 can be filled into the cylinder 2 through the air pressure in the tank 1, and the self-control is realized through medium pressure, without air compressor and electric control system, and the structure is simple, and the failure rate is low.

[0026] The upper pipe 8 is installed on the air outlet and is a protective structure of the air outlet. The upper pipe 8 is in any one of arc structure, L-shaped structure or V-shaped structure. The upper pipe 8 of the embodiment is in L-shaped structure. One end of the upper pipe 8 is communicated to the inside of the tank body 1. The other end of the upper pipe 8 is communicated to the outside atmosphere. The upper pipe 8 is a protective structure of the cylinder body 2, preventing sundries 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.

[0027] The guide sleeve 9 is installed in the air outlet through a connecting plate. The connecting rod 10 is slidably arranged in the guide sleeve 9. The upper end of the connecting rod 10 is provided with the valve disc 11. The lower end of the connecting rod 10 is provided with the float 3. The float 3 is in cylindrical structure. The outer diameter of the float 3 is smaller than the inner ring of the cylinder body 2. The upper end of the cylinder body 2 is sealingly connected to the inside of the tank body 1. The length of the connecting rod 10 between the valve disc 11 and the float 3 is adjustable during installation. The water level in the cylinder body 2 will not exceed the float 3. The sundries is prevented from being stuck in the sealing valve seat part. The air-water ratio in the steady state working condition is adjustable. The air-water ratio in the steady state working condition is adjusted by adjusting the height of the cylinder body 2.

[0028] The lower end of the float 3 is provided with the inner groove 12, so as to improve the buoyancy of the float 3 in the water body 7. The tank body 1 is provided with a plurality of supporting legs 13 at the lower end, so as to improve the stability of the tank body 1.

[0029] Working principle of a water hammer elimination tank

[0030] 1. Initial state, the water hammer elimination tank and the main pipeline 6 are all air. At this time, the valve disc 11 and the float 3 are in the opening state due to gravity. The inside of the water hammer elimination tank is communicated to the atmosphere.

[0031] 2. The main pipeline 6 starts to fill water. The air in the water hammer elimination tank is discharged through the cylinder body 2.

[0032] 3. The water level continues to rise. The lower opening of the cylinder body 2 is blocked. A part of the air is trapped between the cylinder body 2 and the tank body 1 and cannot be discharged.

[0033] 4. With the increase of the water pressure, the air is compressed. The water level in the cylinder body 2 continues to rise. The water level in the cylinder body 2 is higher than the water level in the tank body 1.

[0034] 5. The pressure continues to increase. The water level in the cylinder body 2 continues to rise. The float or the float 3 is floated. The valve disc 11 is pushed upward to be closed.

[0035] 6. The pressure continues to increase to the steady state working pressure. The air continues to be compressed. There is a part of compressed air and a part of water in the water hammer elimination tank.

[0036] 7. The pump is stopped. The pressure in the main pipeline 6 decreases. The water in the water hammer elimination tank enters the main pipeline 6. The negative pressure of the main pipeline 6 is prevented. The safety of the pipeline is protected.

[0037] 8. When the water level drops to the bottom of the cylinder 2, the valve 11 and the float 3 lose buoyancy and drop open.

[0038] 9. As the water level continues to drop, air begins to enter the water hammer arrestor.

[0039] 10. The water in the pipe reverses to positive water hammer pressure and the water enters the water hammer arrestor, such as Fig. 3 At this point the compressed air can absorb the water hammer in the pipe and prevent damaging water hammer pressure in the pipe.

[0040] 11. The height of the cylinder 2 can be adjusted to adjust the air to water ratio at steady state conditions.

[0041] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water hammer arrestor characterized by: Including the jar body (1), the cylinder (2), the float (3) and the sealing ring (4), the jar body (1) lower end is connected with the main pipeline (6) through the connecting pipe (5), the jar body (1) upper end is provided with the gas outlet, the inner edge of the gas outlet is provided with the sealing ring (4), the jar body (1) is provided with the cylinder (2) inside, the cylinder (2) is provided with the float (3) inside, and the cylinder (2) is coaxially arranged with the gas outlet, the water body (7) in the main pipeline (6) can be communicated to the jar body (1) inside, and the water body (7) can lift the float (3) and block the gas outlet.

2. A water hammer arrestor according to claim 1, wherein: The upper pipeline (8) is installed on the gas outlet, and the upper pipeline (8) is the protective structure of the gas outlet, one end of the upper pipeline (8) is communicated to the jar body (1) inside, and the other end of the upper pipeline (8) is empty.

3. A water hammer arrestor according to claim 1, wherein: The guide sleeve (9) is installed in the gas outlet through the connecting plate, the connecting rod (10) is slidably arranged in the guide sleeve (9), the upper end of the connecting rod (10) is provided with the valve (11), and the lower end of the connecting rod (10) is provided with the float (3).

4. A water hammer arrestor according to claim 1, wherein: The float (3) is a cylindrical structure, and the outer diameter of the float (3) is less than the inner ring of the cylinder (2), and the upper end of the cylinder (2) is sealingly connected to the inside of the jar body (1).

5. A water hammer arrestor according to claim 1, wherein: The lower end of the float (3) is provided with an inner groove (12).

6. A water hammer arrestor according to claim 1, wherein: The lower end of the jar body (1) is provided with a plurality of supporting legs (13).

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