Start-stop overflow type water outlet pipe

Abstract

The utility model discloses an overflow type water outlet pipe adopting a start-stop method, which relates to the technical field of overflow type water pipes and comprises a bent pipe, and an overflow pipe is arranged between the side walls of the bent pipe. Sealing rings are arranged between the overflow pipe and the outer walls of the two sides of the bent pipe, an overflow opening is formed in the position, inside the bent pipe, of the upper end of the overflow pipe, an in-pipe protrusion is arranged in the bent pipe, a first mounting plate is arranged at the rear end of the bent pipe, and a water inlet is formed in the position, in the middle of the first mounting plate, of the bent pipe; a second mounting plate is arranged at the front end of the bent pipe, a water outlet is formed in the position, at the lower end of the second mounting plate, of the bent pipe, and a connecting ring is arranged between the water outlet and the second mounting plate. According to the overflow type water outlet pipe adopting the start-stop method, water hammers generated when the valve is opened or closed can be avoided, data detected by a water meter are more accurate, and the liquid level can accurately stay at the height of the overflow opening no matter how large the water hammers are brought in.

Description

Technical Field

[0001] The utility model relates to the technical field of overflow water pipes, in particular to an overflow water outlet pipe with a start-stop method. Background Art

[0002] A water meter is an instrument that measures the volume of clean water flowing through a closed full pipe. When the water meter is working, the water flow rate can be large or small. The common flow rate (commonly known as the large flow rate) 3 is the maximum flow rate under specified working conditions, and the allowable error of the common flow rate is 2%. The minimum flow rate (commonly known as the very small flow rate) Q1 refers to the minimum flow rate that requires the water meter to meet the maximum allowable error (generally 5%). The boundary flow rate (commonly known as the small flow rate) 02 refers to the flow rate between the common flow rate (3 and the minimum flow rate Q1, which divides the water meter flow range into high and low areas. The allowable error of the boundary flow rate is 2%. The water meter calibration device is a device used to calibrate the water meter.

[0003] When people calibrate water meters, they usually use the start-stop method. However, there is no overflow pipe at the bend of the existing equipment. When closing or starting the valve, there will be water hammer, which will cause pipeline vibration and liquid level fluctuation. After it stops, the liquid level is no longer at the horizontal plane raised in the pipe, and the fluctuations caused at different flow rates are also different. The liquid level is also different after it stops, which affects the accuracy of the water meter calibration data. In addition, due to the water hammer factor, conventional water meters with a diameter greater than or equal to DN80 usually use the reversing method. However, due to the types of water meters and simultaneous calibration, the reversing method cannot be used. In order to solve the shortcomings of the existing technology, we propose a start-stop method overflow water outlet pipe. Utility Model Content

[0004] The main purpose of the utility model is to provide a start-stop overflow water outlet pipe, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A start-stop overflow water outlet pipe comprises a bend pipe, an overflow pipe is arranged between the side walls of the bend pipe, sealing rings are arranged between the overflow pipe and the outer walls on both sides of the bend pipe, an overflow port is arranged at the upper end of the overflow pipe inside the bend pipe, an inner tube protrusion is arranged inside the bend pipe, a No. 1 mounting plate is arranged at the rear end of the bend pipe, a water inlet is arranged in the middle of the No. 1 mounting plate, a No. 2 mounting plate is arranged at the front end of the bend pipe, a water outlet is arranged at the lower end of the No. 2 mounting plate, a connecting ring is arranged between the water outlet and the No. 2 mounting plate, four sets of fixing bolts are arranged in the middle of the No. 1 mounting plate and the No. 2 mounting plate, and threaded holes are arranged between the fixing bolts and the No. 1 mounting plate and the No. 2 mounting plate.

[0007] Preferably, a connection port is provided between the overflow pipe and the sealing ring, the overflow pipe is detachably connected to the sealing ring through the provided connection port, the height of the protrusion in the pipe is lower than the height of the protrusion in the pipe, and the cross-sectional diameter of the overflow pipe is much smaller than the cross-sectional diameter of the bent pipe.

[0008] Preferably, connecting ports are respectively provided between the bent pipe and the No. 1 mounting plate and the No. 2 mounting plate, and the bent pipe is detachably connected to the No. 1 mounting plate and the No. 2 mounting plate through the provided connecting ports.

[0009] Preferably, the fixing bolts are detachably connected to the first mounting plate and the second mounting plate through the provided threaded holes.

[0010] Preferably, a mounting interface is provided between the connecting ring and the bottom of the second mounting plate, and the connecting ring is detachably connected to the bottom of the second mounting plate through the provided connecting port.

[0011] Preferably, a connecting port is provided between the lower end of the curved pipe and the connecting ring, and the connecting ring is detachably connected to the outer wall of the lower end of the curved pipe through the provided connecting port.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. In the utility model, the overflow pipe is provided to avoid water hammer when opening or closing the valve, so that the data of water meter calibration is more accurate, because the cross-sectional diameter of the overflow port is much smaller than the inner wall diameter of the elbow, and the height of the overflow port is also lower than the height of the protrusion in the pipe. When the valve is closed, the liquid inside the elbow will slowly enter the inside of the overflow pipe through the overflow port, and then flow out through the inclined overflow pipe, so that the liquid level inside the elbow will slowly drop from the height of the protrusion in the pipe. In this process, the vibration is basically stabilized, and finally the liquid level stops at the horizontal plane of the overflow port. No matter how large the flow rate is that causes the water hammer, the liquid level will accurately stop at the horizontal plane of the overflow port height, so that the water meter calibration result is more accurate.

[0015] 2. In the utility model, an overflow pipe is provided. When calibrating conventional water meters with a diameter greater than or equal to DN, the reversing method is usually used due to the water hammer factor. However, due to the types of water meters and simultaneous calibration, the reversing method cannot be used. In this case, an overflow pipe can be installed in front of the commutator to achieve high-precision start-stop method calibration, and the calibration operation accuracy is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2It is a schematic diagram of the cross-sectional structure of the bent pipe of the utility model;

[0018] Figure 3 It is a schematic diagram of the overflow pipe structure of the utility model.

[0019] In the figure: 1. elbow; 2. overflow pipe; 3. water outlet; 4. connecting ring; 5. mounting plate No. 1; 6. mounting plate No. 2; 7. fixing bolt; 8. water inlet; 9. threaded hole; 10. protrusion inside the pipe; 11. overflow port; 12. sealing ring. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] like Figure 1-Figure 3As shown, a start-stop overflow water outlet pipe comprises a curved pipe 1, an overflow pipe 2 is arranged between the side walls of the curved pipe 1, the overflow pipe 2 is used to slowly lower the liquid level inside the curved pipe 1 to avoid the generation of water hammer, a sealing ring 12 is arranged between the overflow pipe 2 and the outer walls on both sides of the curved pipe 1, the sealing ring 12 maintains the sealing of the connection between the overflow pipe 2 and the curved pipe 1, and an overflow port 11 is arranged at the upper end of the overflow pipe 2 inside the curved pipe 1, the liquid inside the curved pipe 1 will flow from the overflow port 11 into the inside of the overflow pipe 2, and finally stop at the level of the overflow port 11 The inner part of the curved pipe 1 is provided with an inner tube protrusion 10, and the horizontal plane at the height of the inner tube protrusion 10 is the initial height of the liquid level. The liquid level will gradually drop from the height of the inner tube protrusion 10. The rear end of the curved pipe 1 is provided with a No. 1 mounting plate 5, and the No. 1 mounting plate 5 is used to install and connect the rear end of the curved pipe 1. The curved pipe 1 is provided with a water inlet 8 in the middle of the No. 1 mounting plate 5, and the water flows into the inner part of the curved pipe 1 from the water inlet 8. The front end of the curved pipe 1 is provided with a No. 2 mounting plate 6, and the No. 2 mounting plate 6 is used to connect and install the front end of the curved pipe 1. The curved pipe 1 is provided with a No. 2 mounting plate 6. The lower end of the plate 6 is provided with a water outlet 3, and the liquid inside the elbow 1 is discharged outward from the water outlet 3. A connecting ring 4 is provided between the water outlet 3 and the second mounting plate 6, and the connecting ring 4 is used to fix the elbow 1 and the lower end of the second mounting plate 6. Four sets of fixing bolts 7 are provided in the middle of the first mounting plate 5 and the second mounting plate 6. Threaded holes 9 are provided between the fixing bolts 7 and the first mounting plate 5 and the second mounting plate 6. The fixing bolts 7 are detachably connected to the first mounting plate 5 and the second mounting plate 6 through the threaded holes 9. The fixing bolts 7 are used to fix one Mounting plate No. 5 and mounting plate No. 2 6 are connected to the equipment. When the valve is closed, the liquid inside the elbow 1 will slowly enter the overflow pipe 2 through the overflow port 11, and then flow out through the inclined overflow pipe 2, so that the liquid level inside the elbow 1 will slowly drop from the height of the protrusion 10 in the pipe. During this process, the vibration is basically stabilized, and finally the liquid level stops at the horizontal plane of the overflow port 11. No matter how much flow rate causes water hammer, the liquid level will accurately stop at the horizontal plane at the height of the overflow port 11, making the water meter calibration result more accurate.

[0022] It should be noted that the utility model is a start-stop overflow water outlet pipe. During use, when the valve is closed, the liquid inside the curved pipe 1 will slowly enter the interior of the overflow pipe 2 through the overflow port 11, and then flow out through the inclined overflow pipe 2, so that the liquid level inside the curved pipe 1 slowly drops from the height of the protrusion 10 in the pipe. During this process, the vibration is basically stabilized, and finally the liquid level stops at the horizontal plane of the overflow port 11. No matter how large the flow rate is that causes water hammer, the liquid level will finally stop accurately at the horizontal plane at the height of the overflow port 11, making the water meter calibration result more accurate.

[0023] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A start-stop overflow water outlet pipe, comprising a curved pipe (1), characterized in that: An overflow pipe (2) is arranged between the side walls of the curved pipe (1), a sealing ring (12) is arranged between the overflow pipe (2) and the outer walls on both sides of the curved pipe (1), an overflow port (11) is arranged at the upper end of the overflow pipe (2) inside the curved pipe (1), an inner tube protrusion (10) is arranged inside the curved pipe (1), a No. 1 mounting plate (5) is arranged at the rear end of the curved pipe (1), and a water inlet (8) is arranged in the middle of the No. 1 mounting plate (5) of the curved pipe (1). The front end of the curved pipe (1) is provided with a No. 2 mounting plate (6); the curved pipe (1) is provided with a water outlet (3) at the lower end of the No. 2 mounting plate (6); a connecting ring (4) is provided between the water outlet (3) and the No. 2 mounting plate (6); four groups of fixing bolts (7) are provided in the middle of the No. 1 mounting plate (5) and the No. 2 mounting plate (6); threaded holes (9) are provided between the fixing bolts (7) and the No. 1 mounting plate (5) and the No. 2 mounting plate (6).

2. The start-stop overflow water outlet pipe according to claim 1, characterized in that: A connection port is provided between the overflow pipe (2) and the sealing ring (12), and the overflow pipe (2) is detachably connected to the sealing ring (12) via the provided connection port; the height of the protrusion (10) in the pipe is lower than the height of the protrusion (10) in the pipe; and the cross-sectional diameter of the overflow pipe (2) is much smaller than the cross-sectional diameter of the bent pipe (1).

3. The start-stop overflow water outlet pipe according to claim 1, characterized in that: Connecting ports are respectively provided between the bent pipe (1) and the first mounting plate (5) and the second mounting plate (6); the bent pipe (1) is detachably connected to the first mounting plate (5) and the second mounting plate (6) through the provided connecting ports.

4. The start-stop overflow water outlet pipe according to claim 1, characterized in that: The fixing bolts (7) are detachably connected to the first mounting plate (5) and the second mounting plate (6) through the provided threaded holes (9).

5. The start-stop overflow water outlet pipe according to claim 1, characterized in that: A mounting interface is provided between the connecting ring (4) and the bottom of the second mounting plate (6), and the connecting ring (4) is detachably connected to the bottom of the second mounting plate (6) via the provided connecting port.

6. The start-stop overflow water outlet pipe according to claim 1, characterized in that: A connection port is provided between the lower end of the curved pipe (1) and the connection ring (4), and the connection ring (4) is detachably connected to the outer wall of the lower end of the curved pipe (1) via the provided connection port.

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