System for monitoring water flow in large-aperture and small-aperture pipelines

Abstract

The utility model relates to a system for monitoring water flow in pipelines with large and small apertures. Comprising a large-aperture main pipeline used for conveying water flow, a small-aperture bypass pipeline connected with the large-aperture main pipeline in parallel, a first driving assembly arranged at a water inlet of the small-aperture bypass pipeline and used for reducing the water flow speed, and a second driving assembly arranged at a water outlet of the small-aperture bypass pipeline and used for increasing the water flow speed. The first electric valve and the first flow meter are sequentially arranged on the small-aperture bypass pipeline, and the second electric valve and the second flow meter are sequentially arranged on the large-aperture main pipeline. Compared with the prior art, the water flow in the large-aperture main pipeline and the small-aperture bypass pipeline can be kept at a stable water flow speed through the first driving assembly and the second driving assembly, so that the influence on the monitoring of the water flow is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of energy transmission equipment, in particular to a system for monitoring water flow in pipelines with large and small apertures. Background Art

[0002] In the energy supply industry, there are composite pipes that are interconnected with large-diameter pipes and small-diameter pipes. However, due to considerations of pipe resistance, the reference flow rate is usually the maximum flow rate in the large-diameter pipe, which means that when a large water flow rate flows through a small-diameter pipe, it will cause a larger pipe pressure in the small-diameter pipe. In addition, for large-diameter pipes, when low-flow water passes through the large-diameter pipe, the flow meter often finds it difficult to detect the flow of water, which in turn has a serious impact on the detection of water flow in the pipe, which is not conducive to energy measurement statistics.

[0003] The existing improvement method is to install flow meters in the large-diameter pipe and the small-diameter pipe respectively to monitor the water flow in the pipe, but this cannot avoid a series of problems caused by the change of different water flow rates at the junction of the large-diameter pipe and the small-diameter pipe. On the one hand, when the water from the large-diameter pipe flows through the small-diameter pipe, the impact of the high water flow rate in the large-diameter pipe will cause damage to the junction of the large-diameter pipe and the small-diameter pipe. On the other hand, when the low-flow water from the small-diameter pipe flows through the large-diameter pipe, due to the difference in water flow rate, it will indirectly affect the water flow rate in the large-diameter pipe, thereby affecting the actual water flow detection in the large-diameter pipe.

[0004] Therefore, there is an urgent need to improve this monitoring system in order to more realistically and reliably monitor the water flow in pipes of large and small apertures. Summary of the invention

[0005] The purpose of the utility model is to provide a system for monitoring water flow in pipes with large and small apertures in order to overcome the problems of the prior art.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] The technical solution of the utility model is to provide a system for monitoring water flow in large and small aperture pipes, including a large-aperture main pipe for conveying water flow, a small-aperture side pipe connected in parallel with the large-aperture main pipe, a first drive component arranged at the water inlet of the small-aperture side pipe and used to reduce the water flow rate, a second drive component arranged at the water outlet of the small-aperture side pipe and used to increase the water flow rate, a first electric valve and a first flow meter arranged in sequence on the small-aperture side pipe, and a second electric valve and a second flow meter arranged in sequence on the large-aperture main pipe.

[0008] In some specific embodiments, the small-diameter side pipe is arranged in parallel below the large-diameter main pipe.

[0009] In some specific implementations, a first manual valve is provided before the first electric valve on the small-diameter side pipe, and a second manual valve is provided after the first flow meter on the small-diameter side pipe.

[0010] In some specific embodiments, the first manual valve and the second manual valve are both manual butterfly valves.

[0011] In some specific embodiments, the first electric valve and the second electric valve are both provided with sensors for prompting switch signals.

[0012] In some specific embodiments, both the first electric valve and the second electric valve are electric butterfly valves.

[0013] In some specific implementations, a third flow meter is further provided on the large-diameter main pipe, and the third flow meter is located outside the water outlet end of the small-diameter side pipe.

[0014] In some specific implementations, the first flow meter, the second flow meter, and the third flow meter are all electromagnetic flow meters.

[0015] In some embodiments, the first drive component is an impeller.

[0016] In some specific embodiments, the second driving component is a water pump.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) The utility model reduces the water flow rate of the large-diameter main pipe into the small-diameter side pipe by a first driving component such as an impeller to adapt to the water flow rate in the small-diameter side pipe, thereby avoiding the influence of the fluctuation of the water flow rate on the monitoring of the water flow in the small-diameter side pipe and the damage of the junction of the large-diameter main pipe and the small-diameter side pipe due to the impact of the high water flow rate. The water flow rate of the small-diameter side pipe into the large-diameter main pipe is increased by a second driving component such as a water pump to adapt to the water flow rate in the large-diameter main pipe, thereby avoiding the fluctuation of the water flow rate on the water flow in the large-diameter main pipe.

[0019] (2) The utility model arranges the small-diameter side pipe in parallel below the large-diameter main pipe so that when the water flow in the large-diameter main pipe is small, it can automatically and actively flow into the small-diameter side pipe, thereby avoiding providing power for the water flow in the large-diameter main pipe to enter the small-diameter side pipe, thereby saving energy resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] The following are marked in the figure:

[0022] 1 is a large-diameter main pipeline, 2 is a small-diameter bypass pipe, 3 is a first drive assembly, 4 is a second drive assembly, 5 is a first electric valve, 6 is a first flow meter, 7 is a second electric valve, 8 is a second flow meter, 9 is a first manual valve, 10 is a second manual valve, and 11 is a third flow meter. DETAILED DESCRIPTION

[0023] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0024] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0025] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] In the following embodiments, unless otherwise specified, functional components or structures are conventional components or conventional structures used in the art to achieve corresponding functions.

[0027] Embodiment 1:

[0028] like Figure 1 As shown, a system for monitoring water flow in large and small aperture pipes includes a large aperture main pipe 1 for conveying water flow, a small aperture side pipe 2 connected in parallel with the large aperture main pipe 1 and arranged below it, a first drive assembly 3 arranged at the water inlet of the small aperture side pipe 2 and used to reduce the water flow rate, a second drive assembly 4 arranged at the water outlet of the small aperture side pipe 2 and used to increase the water flow rate, a first electric valve 5 and a first flow meter 6 arranged on the small aperture side pipe 2 in sequence, and a second electric valve 7 and a second flow meter 8 arranged on the large aperture main pipe 1 in sequence. Exemplarily, the first drive assembly 3 is a conventional impeller, and the second drive assembly 4 is a conventional water pump. The high water flow rate from the large aperture main pipe 1 is reduced by the buffering effect of the impeller, and the low water flow rate from the small aperture side pipe 2 is increased by the power of the water pump, so as to ensure the stability of the water velocity in the large aperture main pipe 1 and the stability of the water velocity in the small aperture side pipe 2. The small-diameter side pipe 2 is arranged in parallel below the large-diameter main pipe 1, so that when the water flow in the large-diameter main pipe 1 is low, it can automatically and actively flow into the small-diameter side pipe 2 without the need for additional power.

[0029] A first manual valve 9 is also provided in front of the first electric valve 5 on the small-aperture side pipe 2. When the first electric valve 5 fails, the first manual valve 9 can be used to control the water flow into the small-aperture side pipe 2. A second manual valve 10 is also provided behind the first flowmeter 6 on the small-aperture side pipe 2. The second manual valve 10 controls whether the water flow enters the large-aperture main pipe 1. Exemplarily, the first manual valve 9 and the second manual valve 10 are both manual butterfly valves, which are easy to operate and have stable and reliable control. The first electric valve 5 and the second electric valve 7 are both provided with sensors for prompting switch signals. Exemplarily, the sensors on the first electric valve 5 and the second electric valve 7 are through-beam photoelectric sensors. When there is no water flow in the small-aperture side pipe 2, that is, the first electric valve 5 is not blocked, the sensor on the first electric valve 5 issues a warning prompt to close the first electric valve 5; when there is less water flow or no water flow in the large-aperture main pipe 1, that is, the second electric valve 7 is not blocked, the sensor on the second electric valve 7 issues a warning prompt to close the second electric valve 7. The first electric valve 5 and the second electric valve 7 are both electric butterfly valves.

[0030] The large-aperture main pipe 1 is also provided with a third flow meter 11, which is located outside the water outlet end of the small-aperture side pipe 2. By comparing and monitoring the water flow in the large-aperture main pipe 1 that is not affected by the water flow in the small-aperture side pipe 2 and the water flow in the large-aperture main pipe 1 after the water flow from the small-aperture side pipe 2 is merged, it is used to reflect whether the second drive component is working, and on the other hand, it is also used to ensure the accuracy of monitoring the water flow in the large-aperture main pipe 1 outside the water outlet end of the small-aperture side pipe 2. The first flow meter 6, the second flow meter 8, and the third flow meter 11 are all electromagnetic flow meters, which have fast control response speed and accurate and stable measurement.

[0031] The working principle of the utility model is:

[0032] During specific use, the first manual valve 9, the second manual valve 10, the first electric valve 5, and the second electric valve 7 are all in the normally open state. When the water flow in the large-diameter main pipeline 1 is small, the water in the large-diameter main pipeline 1 automatically and actively flows slowly into the small-diameter side pipeline 2 through the impeller of the first drive component 3, and is monitored by the first flow meter 6 in the small-diameter side pipeline 2. In order to avoid water flow retention in the large-diameter main pipeline 1 affecting the monitoring of the third flow meter 11, the second electric valve 7 on the large-diameter main pipeline 1 is closed. When the water flow in the large-aperture main pipe 1 is large, a smaller portion of the water flow slowly enters the small-aperture side pipe 2 through the impeller of the first drive component 3 and is monitored by the first flowmeter 6 in the small-aperture side pipe 2, and another larger portion of the water flow flows through the second flowmeter 8 on the large-aperture main pipe 1 for monitoring. At the same time, when the water flow in the small-aperture side pipe 2 passes through the water pump of the second drive component 4 and merges with the water flow in the large-aperture main pipe 1, the water flow is monitored by the third flowmeter 11 to calculate the total water flow in the large-aperture pipes and the small-aperture pipes.

[0033] The above description of the embodiments is to facilitate the understanding and use of the utility model by those skilled in the art. It is obvious that those familiar with the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the utility model is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the utility model without departing from the scope of the utility model should be within the scope of protection of the utility model.

Claims

1. A system for monitoring water flow in pipes of large and small diameters, characterized in that: The invention comprises a large-diameter main pipeline (1) for conveying water flow, a small-diameter side pipeline (2) connected in parallel with the large-diameter main pipeline (1), a first drive component (3) arranged at the water inlet of the small-diameter side pipeline (2) and used to reduce the water flow rate, a second drive component (4) arranged at the water outlet of the small-diameter side pipeline (2) and used to increase the water flow rate, a first electric valve (5) and a first flow meter (6) arranged in sequence on the small-diameter side pipeline (2), and a second electric valve (7) and a second flow meter (8) arranged in sequence on the large-diameter main pipeline (1).

2. A system for monitoring water flow in large and small diameter pipes according to claim 1, characterized in that: The small-diameter side pipe (2) is arranged in parallel below the large-diameter main pipe (1).

3. A system for monitoring water flow in large and small diameter pipes according to claim 1, characterized in that: A first manual valve (9) is also provided in front of the first electric valve (5) on the small-diameter side pipe (2), and a second manual valve (10) is also provided behind the first flow meter (6) on the small-diameter side pipe (2).

4. A system for monitoring water flow in large and small diameter pipes according to claim 3, characterized in that: The first manual valve (9) and the second manual valve (10) are both manual butterfly valves.

5. A system for monitoring water flow in large and small diameter pipes according to claim 1, characterized in that: The first electric valve (5) and the second electric valve (7) are both provided with sensors for prompting switch signals.

6. A system for monitoring water flow in large and small diameter pipes according to claim 1, characterized in that: The first electric valve (5) and the second electric valve (7) are both electric butterfly valves.

7. A system for monitoring water flow in large and small diameter pipes according to claim 1, characterized in that: The large-diameter main pipe (1) is also provided with a third flow meter (11), and the third flow meter (11) is located outside the water outlet end of the small-diameter side pipe (2).

8. A system for monitoring water flow in large and small diameter pipes according to claim 7, characterized in that: The first flow meter (6), the second flow meter (8) and the third flow meter (11) are all electromagnetic flow meters.

9. A system for monitoring water flow in large and small diameter pipes according to claim 1, characterized in that: The first driving component (3) is an impeller.

10. A system for monitoring water flow in large and small diameter pipes according to claim 1, characterized in that: The second driving component (4) is a water pump.

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