A device and method for effectively controlling the closing of a water hammer prevention valve

Abstract

The present invention discloses a device and method for effectively controlling the closing of a water hammer prevention valve, and relates to the technical field of long-distance pipeline transportation. The device comprises a water pipeline 1, on which a manual ball valve 1 and a water hammer prevention valve are sequentially arranged along the water flow direction, a water pipeline 2 is branched on the water pipeline 1 and connected to a T, and a manual ball valve 2 and a manual ball valve 3 are sequentially arranged on the water pipeline 2; the present invention changes the original control mode of the water hammer prevention valve so that the valve has a reasonable and fast closing function, which shortens the working time of inspection and maintenance and saves water resources, and also plays a certain role in preventing corrosion of the pipeline, thereby improving work efficiency.

Description

Technical Field

[0001] The invention discloses a device and a method for effectively controlling the closing of a water hammer prevention valve, and relates to the technical field of long-distance pipeline transportation. Background Art

[0002] In the long-distance, high-lift, large-diameter pipeline water delivery network system, the pump suddenly stops when the water pump is turned on, off, or powered off. At this time, due to the inertia of the water flow, the water column is separated (trend), causing the pressure of the pipe network system to drop. Then the separated water columns are bridged, and the two separated water columns collide violently to produce a high-pressure bridged water hammer, which produces huge pressure fluctuations. At this time, the water hammer in the pipe network system will have great destructive power and damage the water pump and pipeline. Therefore, a water hammer prevention valve is reasonably designed at the outlet of the water pump. According to the original source control point of the water hammer prevention valve, when the water hammer prevention valve is installed for the first time or repaired and replaced with a new valve, there is a waste of water resources and precious time, and the air entering the pipeline seriously aggravates the corrosion of the pipeline, shortening the service life of the pipe network system and increasing production costs. Summary of the invention

[0003] In order to solve the above problems, the present invention discloses a device and method for effectively controlling the closing of a water hammer prevention valve, which is mainly used for the first installation or maintenance of a water hammer prevention valve in a newly built pipe network system and for replacing a new valve; it aims to change the original control mode of the water hammer prevention valve so that it has a reasonable and fast closing function, thereby shortening the working time of maintenance and overhaul and saving water resources, and also playing a certain role in preventing corrosion of pipelines.

[0004] The technical solution adopted by the present invention is as follows:

[0005] The present invention discloses a device for effectively controlling the closing of a water hammer prevention valve, comprising a water delivery pipeline 1, on which a manual ball valve 1 and a water hammer prevention valve are sequentially arranged along the water flow direction, and characterized in that a T-connected water delivery pipeline 2 is branched on the water delivery pipeline 1, and a manual ball valve 2 and a manual ball valve 3 are sequentially arranged on the water delivery pipeline 2;

[0006] Furthermore, the upstream pipeline of the manual ball valve 1 is filled with water, and the pressure balance between the high-pressure end and the low-pressure end of the water hammer prevention valve is achieved by controlling the opening and closing ratio of the manual ball valve 1;

[0007] Furthermore, the water pipeline 2 is connected to the water pipeline 1 by a T-connection to form a parallel relationship, the inlet end of the water pipeline 2 is connected to the upstream pipeline of the water pipeline 1, and the outlet end is connected to the source control point of the water hammer prevention valve in the downstream pipeline of the water pipeline 1;

[0008] Further, the manual ball valve 2 and the manual ball valve 3 are opened separately on the water delivery pipeline 2; the water delivery pipeline 2 is filled with water through the manual ball valve 2 and the manual ball valve 3, and the water delivery pipeline 2 is connected to the inlet of the water hammer prevention valve source control point to control the pressure balance of the water hammer prevention valve and the pipeline;

[0009] Further, the source control points on the water hammer prevention valve are respectively connected to the valve body of the water hammer prevention valve, which is at the upstream end of the water hammer prevention valve, and the outlet pipe of the water hammer prevention valve is connected to the production water pool;

[0010] Furthermore, the water delivery pipeline 2 is made of a high-pressure seamless steel pipe. When the manual ball valve is closed and the water hammer prevention valve is opened, the manual ball valve 2 and the manual ball valve 3 on the water delivery pipeline 2 are opened to drain the flow and pressure to the inlet end of the water hammer prevention valve source control point, thereby effectively and reasonably controlling the closing of the water hammer prevention valve. The technical effects of the present invention are as follows:

[0011] In view of the above problems, the present invention overlaps a high-pressure seamless steel pipe between the original discharge pipeline water hammer prevention valve and the manual ball valve of the water delivery and regulation system pipeline, connects it to the source control inlet of the water hammer prevention valve, and installs a manual ball valve on the overlapped high-pressure seamless steel pipe pipeline;

[0012] The details are as follows:

[0013] 1. Effectively save water resources and reduce production costs;

[0014] 2. Effectively protect pipeline corrosion and extend service life;

[0015] 3. Effectively save time for inspection and maintenance of water hammer prevention valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Water hammer prevention valve control Figure 1 ;

[0017] 1—water delivery pipeline 1, 2—water hammer prevention valve, 3—water hammer prevention valve control device, 4—manual ball valve 1;

[0018] Figure 2 Water hammer prevention valve control Figure 2 ;

[0019] 1—water pipeline 1, 2—water hammer prevention valve, 3—original control device, 4—manual ball valve 1, 5—water pipeline 26—manual ball valve 2, 7—manual ball valve 3;

[0020] Figure 3 This is a schematic diagram of the water hammer prevention valve control system;

[0021] 1—water pipeline 1, 2—water hammer prevention valve, 3—water hammer prevention valve control device, 4—manual ball valve 1, 5—water pipeline 2, 6—manual ball valve 2, 7—manual ball valve 3, 8—production water pool. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] In this embodiment, the data used are preferred solutions, but are not used to limit the present invention.

[0025] Example 1

[0026] like Figure 1 As shown, this embodiment provides a device for effectively controlling the closing of a water hammer prevention valve, comprising a water delivery pipeline 1, a water hammer prevention valve, a water hammer prevention valve control device and a manual ball valve 1;

[0027] In this embodiment, when the water hammer prevention valve in the newly built pipe network system is installed for the first time or repaired and replaced with a new valve, the pressure in the high-pressure end and the low-pressure end of the water hammer prevention valve body is zero;

[0028] In this embodiment, under normal circumstances, the upstream pipeline of the manual ball valve 1 is full of water. When the manual ball valve 1 is opened, the water in the pipeline quickly flows to the water hammer prevention valve due to the pressure difference. The pressures in the high-pressure end and the low-pressure end of the water hammer prevention valve are relatively small, and the water hammer prevention valve is partially closed and discharged to the production water pool through the water delivery pipeline 1. The closing time is relatively long, which wastes water resources, causes more air to enter the pipeline, and aggravates the corrosion of the protection in the pipeline.

[0029] In this embodiment, when the pressure of water drawn into the valve body at the inlet of the water hammer prevention valve is balanced with the pressure in the pipeline, the water hammer prevention valve is completely closed.

[0030] Example 2

[0031] like Figure 2-3 As shown, this embodiment provides a device for effectively controlling the closing of a water hammer prevention valve, comprising a water pipeline 1, on which a manual ball valve 1 and a water hammer prevention valve are sequentially arranged along the water flow direction, characterized in that a T-connected water pipeline 2 is branched on the water pipeline 1, and a manual ball valve 2 and a manual ball valve 3 are sequentially arranged on the water pipeline 2;

[0032] In this embodiment, after the manual ball valve 1 is closed, the water pipeline 1 cannot regulate the closing of the water hammer prevention valve. In this case, the inlet end of the water pipeline 2 is connected to the upstream pipeline of the water pipeline 1, and the outlet end is connected to the source control point of the water hammer prevention valve; and the water hammer prevention valve control device controls the opening and closing of the water hammer prevention valve.

[0033] In this embodiment, the water pipeline 2T is connected to the water pipeline 1 to form a parallel relationship, the inlet end of the water pipeline 2 is connected to the upstream pipeline of the water pipeline 1, and the outlet end is connected to the source control point of the water hammer prevention valve of the downstream pipeline of the water pipeline 1;

[0034] In this embodiment, the manual ball valve 2 is opened separately on the water delivery pipeline 2 to form the first section of the water filling pipeline, and then the manual ball valve 3 is opened to form the second section of the water filling pipeline; the water delivery pipeline 2 is filled with water through the manual ball valve 2 and the manual ball valve 3, and the pressure balance of the water hammer prevention valve and the pipeline is controlled through the water delivery pipeline 2 and the water hammer prevention valve control device;

[0035] In this embodiment, the manual ball valve 2 is closed alone, and the manual ball valve 1 is opened. At this time, the pressures in the high-pressure end and the low-pressure end of the water hammer prevention valve are small, the pressure in the water hammer prevention valve body and the pressure in the pipeline are unbalanced, the water consumption is large, and the water hammer prevention valve is closed for a long time.

[0036] Open manual ball valve 2, open manual ball valve 3, open manual ball valve 1. At this time, the pressures at the high-pressure end and low-pressure end of the water hammer prevention valve are relatively large, the pressure inside the valve body of the water hammer prevention valve and the pressure inside the pipeline tend to be balanced, the water consumption is small, and the closing time of the water hammer prevention valve is short.

[0037] Close manual ball valve 1, open manual ball valve 2 and manual ball valve 3, and completely fill the water hammer prevention valve with water through water pipe 2. At this time, the pressure in the water hammer prevention valve body and the pressure in the pipe are balanced. At this time, the water consumption is very small and the time is very short, so the water hammer prevention valve can be closed reasonably and quickly;

[0038] In this embodiment, when the pressure in the valve body of the water hammer prevention valve and the pressure in the pipeline reach equilibrium, the manual ball valve 1 is fully opened and the water hammer prevention valve is fully closed, so that the water in the pipeline cannot be discharged and no air can enter the pipeline.

[0039] Through the above embodiments, water resources are saved and the time for inspection and maintenance work is reduced. At the same time, corrosion of the pipeline caused by air entering from high points in the pipeline is effectively avoided, the service life is extended, and the safe and stable operation of the pipeline system is guaranteed.

[0040] 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 and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for effectively controlling the closing of a water hammer prevention valve, comprising a water delivery pipeline 1 (1), a manual ball valve 1 (4) and a water hammer prevention valve (2) being arranged in sequence on the water delivery pipeline (1) along the direction of water flow, characterized in that: A T-shaped branch is formed on the water delivery pipeline 1 (1) to connect the water delivery pipeline 2 (5), and a manual ball valve 2 (6) and a manual ball valve 3 (7) are sequentially arranged on the water delivery pipeline 2 (5); When the manual ball valve 1 (4) is closed, upstream and downstream pipelines of the water delivery pipeline 1 (1) are formed, and the water hammer prevention valve (2) on the downstream pipeline is controlled by the water hammer prevention valve control device (3); The water pipeline 2 (5) is connected to the water pipeline 1 (1) in parallel, the inlet end of the water pipeline 2 (5) is connected to the upstream pipeline of the water pipeline 1 (1), and the outlet end is connected to the source control point of the water hammer prevention valve (2) in the downstream pipeline of the water pipeline 1 (1); The manual ball valve 2 (6) and the manual ball valve 3 (7) on the water pipeline 2 (5) are opened separately to fill the water pipeline 2 (5) with water; the water pipeline 2 (5) is connected to the source control point inlet of the water hammer prevention valve (2) to control the pressure balance in the water hammer prevention valve (2) and the water pipeline 1 (1); The inlet end of the water hammer prevention valve (2) is connected to the water delivery pipeline 1 (1), and the outlet end of the water hammer prevention valve (2) is connected to the production water pool (8); When the pressure in the valve body of the water hammer prevention valve (2) and the pressure in the water delivery pipeline 1 (1) are balanced, the water hammer prevention valve (2) is closed.

2. A device for effectively controlling the closing of a water hammer prevention valve according to claim 1, characterized in that: The water delivery pipeline 2 (5) is made of high-pressure seamless steel pipe.

3. A control method for a device for effectively controlling the closing of a water hammer prevention valve according to any one of claims 1-2, characterized in that: The upstream pipeline of the manual ball valve 1 (4) is filled with water. When the water hammer prevention valve (2) is installed or repaired, the manual ball valve 1 (4) is closed. At this time, the manual ball valve 2 (6) and the manual ball valve 3 (7) are opened to inject water into the water hammer prevention valve (2) through the water supply pipeline 2 (5). When the pressure in the valve body of the water hammer prevention valve (2) and the pressure in the water supply pipeline 1 (1) are balanced, the water hammer prevention valve (2) is closed. At this time, the manual ball valve 1 (4) is fully opened.

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