Energy dissipation and flow measurement system for water supply pipeline

Abstract

The present invention provides a water supply pipeline energy dissipation and flow measurement system, which relates to the technical field of energy dissipation and flow measurement. The water supply pipeline energy dissipation and flow measurement system comprises an operation box, a water inlet pipe, an energy dissipation component and a flow measurement component; the water inlet pipe is installed in the operation box; the energy dissipation component is connected to the end of the water inlet pipe, the energy dissipation component is located inside the operation box, and is communicated with the inside of the operation box; the flow measurement component comprises a flow stabilizing structure arranged in the operation box and a thin-walled weir arranged inside the operation box; the flow stabilizing structure is located between the energy dissipation component and the thin-walled weir, and is used to slow down water level fluctuations; a water level monitor and a flow meter are provided on the operation box, the water level monitor is electrically connected to the flow meter, the water level monitor is used to monitor the water depth at a distance L upstream of the thin-walled weir, and the water depth information is sent to the flow meter, the flow meter receives the water depth information and calculates the flow rate passing through the thin-walled weir. The technical problem that the energy dissipation and flow measurement in the prior art are independently set and cannot be realized in one device is alleviated.

Description

Technical Field

[0001] The invention relates to the technical field of energy dissipation and flow measurement, in particular to an energy dissipation and flow measurement system for a water supply pipeline. Background Art

[0002] With the development of industrialization and urbanization, centralized water supply has become increasingly important. Some areas take advantage of the terrain to build pools on top of the mountain. Due to the large drop in height, the pressure in the downstream pipeline is also high.

[0003] However, in the process of gravity pipe water supply, there are also problems such as energy dissipation and pressure reduction at the end of the pipe and flow measurement. The existing technology generally only achieves pressure reduction and energy dissipation by changing the flow area of ​​the pressure reducing device, and achieves the purpose of flow measurement through a flow meter. Energy dissipation and flow measurement are set independently and cannot be achieved in one device. Summary of the invention

[0004] The purpose of the present invention is to provide a water supply pipeline energy dissipation and flow measurement system to alleviate the technical problem that the energy dissipation and flow measurement are independently set in the prior art and cannot be realized in one device.

[0005] The present invention provides a water supply pipeline energy dissipation flow measurement system, comprising: an operation box, a water inlet pipe, an energy dissipation component and a flow measurement component;

[0006] The water inlet pipe is installed on the operation box;

[0007] The energy dissipation component is connected to the end of the water inlet pipe, and the energy dissipation component is located inside the operation box and communicated with the inside of the operation box;

[0008] The flow measuring component includes a flow stabilizing structure arranged in the operation box and a thin-walled weir arranged inside the operation box; the flow stabilizing structure is located between the energy dissipation component and the thin-walled weir, and is used to slow down water level fluctuations;

[0009] The operating box is provided with a water level monitor and a flow meter, the water level monitor is electrically connected to the flow meter, the water level monitor is used to monitor the water depth at a distance L upstream of the thin-wall weir, and send the water depth information to the flow meter, the flow meter receives the water depth information and calculates the flow rate passing through the thin-wall weir.

[0010] In an optional embodiment, the flow stabilizing structure includes a plurality of baffles, the baffles divide the interior of the operation box into a first space, a second space, and a third space arranged on the left and right, the energy dissipation component is located in the first space, and the thin-walled weir is located in the third space;

[0011] The first space is connected to the second space through an overflow port, the second space is connected to the third space through a water outlet, and the height of the overflow port is greater than the height of the water outlet.

[0012] In an optional embodiment, the plurality of baffles are overflow plates and flow stabilizing plates respectively;

[0013] The bottom end of the overflow plate is fixedly connected to the bottom wall of the operation box, and the overflow port is formed between the top end of the overflow plate and the top wall of the operation box;

[0014] The top end of the flow stabilizing plate is fixedly connected to the top wall of the operation box, and the water outlet is formed between the bottom end of the flow stabilizing plate and the bottom wall of the operation box;

[0015] The top end of the overflow plate is higher than the bottom end of the flow stabilizing plate.

[0016] In an optional embodiment, the water level monitor is arranged directly above a distance L upstream from the thin-wall weir.

[0017] In an optional embodiment, the water depth above the weir of the thin-walled weir is H;

[0018] Wherein, the L is greater than 5 to 8 times the H, and H is the distance between the top of the thin-wall weir and the water surface in the operation box.

[0019] In an optional embodiment, a conversion module is provided in the flow meter;

[0020] The conversion module is used to convert the water depth information into the water depth above the weir, where the water depth above the weir is the difference between the water depth at a point L upstream of the thin-wall weir and the height of the thin-wall weir.

[0021] In an optional embodiment, the outer side wall of the thin-walled weir is provided with a flow guiding device, wherein the flow guiding device comprises a flow guiding groove, and the flow guiding groove is arranged to be inclined downward in a direction away from the outer side wall of the thin-walled weir.

[0022] In an optional embodiment, one end of the guide groove is hinged to the outer side wall of the thin-walled weir;

[0023] The guide device also includes a support rod and a telescopic joint arranged on the support rod, the support rod is hinged between the guide groove and the outer wall of the thin-walled weir, and the telescopic joint is used to control the length of the support rod to adjust the inclination angle of the guide groove.

[0024] In an optional embodiment, the energy dissipation assembly includes an energy dissipation outer cylinder and an energy dissipation inner cylinder that move relative to each other in the vertical direction. The energy dissipation outer cylinder is provided with a plurality of spray holes in the vertical direction, and the number of spray holes opened can be adjusted by relative movement of the two.

[0025] In an optional embodiment, the water inlet pipe includes a curved pipe section and a vertical section, and the outlet of the vertical section is connected to the energy dissipation outer cylinder;

[0026] The energy dissipation inner cylinder is connected to an axis driving mechanism;

[0027] The center line of the inlet of the curved pipe section is arranged horizontally.

[0028] Beneficial effects:

[0029] The energy dissipation and flow measurement system for water supply pipelines provided by the present invention has an energy dissipation component connected to the end of the water inlet pipe, the energy dissipation component is located inside the operation box and is communicated with the inside of the operation box. When used specifically, the water flow out of the water inlet pipe can be energy dissipated and pressure regulated; since the flow measurement component includes a flow stabilizing structure arranged in the operation box and a thin-walled weir arranged inside the operation box, the flow stabilizing structure is located between the energy dissipation component and the thin-walled weir and is used to mitigate water level fluctuations, the water flow after energy dissipation and pressure regulation can flow to the thin-walled weir through the flow stabilizing structure, under the action of the flow stabilizing structure, the problem of water level fluctuations within a short distance can be solved, and combined with the thin-walled weir, accurate flow measurement can be achieved; a water level monitor and a flow meter are provided on the operation box, the water level monitor is electrically connected to the flow meter, the water level monitor is used to monitor the water depth at a distance L upstream of the thin-walled weir, and send the water depth information to the flow meter, the flow meter receives the water depth information and calculates the flow passing through the thin-walled weir.

[0030] It can be seen that the water supply pipeline energy dissipation and flow measurement system can achieve the two major purposes of energy dissipation and flow measurement at the same time. In actual engineering applications, it can be combined with civil engineering to become a systematic product, reducing the trouble of installing multiple equipment, saving land resources and reducing problems such as immigration and land acquisition. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0032] Figure 1 A longitudinal cross-sectional view of a water supply pipeline energy dissipation and flow measurement system provided by an embodiment of the present invention;

[0033] Figure 2 It is a cross-sectional view of part of the operating box, thin-wall weir, overflow plate and flow stabilizing plate, where the arrow indicates the flow direction of the water.

[0034] icon:

[0035] 100-operation box; 110-first space; 120-second space; 130-third space; 140-drain valve; 150-ventilation hole;

[0036] 200-water inlet pipe;

[0037] 300-energy dissipation assembly; 310-energy dissipation outer cylinder; 320-energy dissipation inner cylinder; 330-shaft; 340-motor; 350-threaded sleeve; 360-fixed frame;

[0038] 410-thin-wall weir; 420-overflow plate; 430-flow stabilizing plate; 421-overflow port; 431-water outlet;

[0039] 500-water level monitor;

[0040] 600-Flow meter;

[0041] 700- flow guide device; 710- flow guide groove; 720- support rod; 730- telescopic joint; 740- support. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] 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.

[0045] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0046] In addition, the terms "horizontal" and "vertical" do not mean that the components must be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0047] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0049] Reference Figure 1 The present embodiment provides a water supply pipeline energy dissipation and flow measurement system, comprising an operation box 100, a water inlet pipe 200, an energy dissipation component 300 and a flow measurement component; the water inlet pipe 200 is installed on the operation box 100; the energy dissipation component 300 is connected to the end of the water inlet pipe 200, the energy dissipation component 300 is located inside the operation box 100, and is communicated with the inside of the operation box 100; the flow measurement component comprises a flow stabilizing structure arranged in the operation box 100 and a thin-walled weir 410 arranged inside the operation box 100; the flow stabilizing structure is located between the energy dissipation component 300 and the thin-walled weir 410, and is used to slow down water level fluctuations; a water level monitor 500 and a flow meter 600 are provided on the operation box 100, the water level monitor 500 is electrically connected to the flow meter 600, the water level monitor 500 is used to monitor the water depth at the upstream L of the thin-walled weir 410, and send the water depth information to the flow meter 600, the flow meter 600 receives the water depth information and calculates the flow passing through the thin-walled weir 410.

[0050] The energy dissipation and flow measurement system for water supply pipeline provided in this embodiment has an energy dissipation component 300 connected to the end of the water inlet pipe 200. The energy dissipation component 300 is located inside the operation box 100 and is communicated with the inside of the operation box 100. When used, the water flow out of the water inlet pipe 200 can be energy dissipated and pressure regulated. Since the flow measurement component includes a flow stabilizing structure provided in the operation box 100 and a thin-walled weir 410 provided inside the operation box 100, the flow stabilizing structure is located between the energy dissipation component 300 and the thin-walled weir 410, which is used to slow down water level fluctuations, the energy dissipation and pressure regulation The water flow behind can flow to the thin-walled weir 410 through the flow-stabilizing structure. Under the action of the flow-stabilizing structure, the problem of water level fluctuation within a short distance can be solved. Combined with the thin-walled weir 410, accurate flow measurement can be achieved. The operation box 100 is provided with a water level monitor 500 and a flow meter 600. The water level monitor 500 is electrically connected to the flow meter 600. The water level monitor 500 is used to monitor the water depth at the upstream L of the thin-walled weir 410, and send the water depth information to the flow meter 600. The flow meter 600 receives the water depth information and calculates the flow rate passing through the thin-walled weir 410.

[0051] Further, see Figure 1 and Figure 2 The flow stabilizing structure includes a plurality of baffles, which divide the interior of the operating box 100 into a first space 110, a second space 120 and a third space 130 which are arranged on the left and right sides. The energy dissipation component 300 is located in the first space 110, and the thin-wall weir 410 is located in the third space 130; the first space 110 is connected with the second space 120 through an overflow port 421, and the second space 120 is connected with the third space 130 through a water outlet 431. The height of the overflow port 421 is greater than the height of the water outlet 431. With such an arrangement, the water flow can rise slowly in the operating box 100, slowing down the water level fluctuation, thereby improving the accuracy of water level monitoring.

[0052] Specifically, the multiple baffles are an overflow plate 420 and a flow stabilizing plate 430; the bottom end of the overflow plate 420 is fixedly connected to the bottom wall of the operating box 100, and an overflow port 421 is formed between the top end of the overflow plate 420 and the top wall of the operating box 100; the top end of the flow stabilizing plate 430 is fixedly connected to the top wall of the operating box 100, and a water outlet 431 is formed between the bottom end of the flow stabilizing plate 430 and the bottom wall of the operating box 100; the top end of the overflow plate 420 is higher than the bottom end of the flow stabilizing plate 430.

[0053] In this embodiment, the water level monitor 500 is disposed directly above a location L upstream of the thin-wall weir 410 . This configuration enables the water level monitor 500 to accurately monitor water depth information at a location L upstream of the thin-wall weir 410 .

[0054] Furthermore, the water depth on the thin-walled weir 410 is H; wherein, L is greater than 5 to 8 times of H, which can ensure that the water level upstream of the thin-walled weir 410 is relatively stable, making the flow measurement more accurate; H is the distance between the top of the thin-walled weir 410 and the water surface in the operating box 100, and the value of L can be obtained through the water depth H on the weir.

[0055] In this embodiment, a conversion module is provided in the flow meter 600; the conversion module is used to convert the water depth information into the water depth H above the weir, which is the difference between the water depth at the upstream L of the thin-walled weir 410 and the height of the thin-walled weir 410.

[0056] It should be noted that the water surface line will drop when it approaches the thin-wall weir 410. At a certain distance upstream of the thin-wall weir 410, the water level is relatively stable, and the measured flow value is more accurate.

[0057] It should also be noted that integrating the conversion module into the flow meter 600 and implementing corresponding conversion operations are clear and achievable for those skilled in the art.

[0058] Please continue to refer to Figure 1 The outer wall of the thin-walled weir 410 is provided with a guide device 700 , and the guide device 700 includes a guide groove 710 , and the guide groove 710 is arranged to be inclined downward in a direction away from the outer wall of the thin-walled weir 410 .

[0059] The inclination angle of the guide groove 710 is adjustable.

[0060] Specifically, one end of the guide groove 710 is hinged to the outer wall of the thin-walled weir 410; the guide device 700 also includes a support rod 720 and a telescopic joint 730 arranged on the support rod 720, the support rod 720 is hinged between the guide groove 710 and the outer wall of the thin-walled weir 410, the telescopic joint 730 is used to control the length of the support rod 720 to adjust the inclination angle of the guide groove 710, and the length is changed under the control of the telescopic joint 730, thereby adjusting the angle of the guide groove 710, and has strong adaptability to terrain conditions.

[0061] Optionally, a support 740 is provided on the outer side wall of the thin-walled weir 410 , and the lower end of the support rod 720 is hinged to the support 740 .

[0062] In this embodiment, a discharge valve 140 is provided at the bottom of the thin-wall weir 410 , and debris in the water inlet pipe 200 can be discharged regularly by opening the discharge valve 140 ; ​​a ventilation hole 150 is provided at the top of the operation box 100 .

[0063] The specific structure of the flow measuring assembly has been described above, and the specific structure of the energy dissipation assembly 300 will be described next.

[0064] The energy dissipation component 300 can adopt existing technology, or adopt Figure 1The energy dissipation assembly 300 is shown.

[0065] Specifically, the energy dissipation assembly 300 includes an energy dissipation outer cylinder 310 and an energy dissipation inner cylinder 320 that move relative to each other in the vertical direction. The energy dissipation outer cylinder 310 is provided with a plurality of spray holes in the vertical direction. The number of spray holes opened can be adjusted by relative movement of the two.

[0066] In simple terms, the multiple groups of spray holes can be set to two groups, three groups, four groups or more, wherein each group is provided with multiple spray holes, and the multiple spray holes are arranged at intervals in a circle; when the energy dissipation inner cylinder 320 moves vertically downward relative to the energy dissipation outer cylinder 310, the number of groups of open spray holes can be reduced, and vice versa, the number of groups of open spray holes increases. At a certain fixed position, multiple spray holes of the same group can be opened at the same time.

[0067] In one embodiment of the present application, the water inlet pipe 200 includes a curved pipe section and a vertical section, the outlet of the vertical section is connected to the energy dissipation outer cylinder 310; the energy dissipation inner cylinder 320 is connected to the axial drive mechanism; the center line of the inlet of the curved pipe section is horizontally arranged, such an arrangement can facilitate the installation and fixation of the water inlet pipe 200, and at the same time, facilitate the connection of the curved pipe section with other pipelines.

[0068] Optionally, the axis driving mechanism may be a push rod motor or other linear driving mechanism.

[0069] In this embodiment, refer to Figure 1 The axis driving mechanism includes a shaft rod 330, a motor 340 and a threaded sleeve 350. One end of the shaft rod 330 is fixedly connected to the energy dissipation inner cylinder 320, and the other end of the shaft rod 330 is transmission-connected to the motor 340 and threadedly connected to the threaded sleeve 350. The threaded sleeve 350 is fixedly connected to the water inlet pipe 200 through a fixing frame 360. Specifically, the threaded sleeve 350 is fixedly connected to the curved pipe section of the water inlet pipe 200 through the fixing frame 360.

[0070] During operation, the motor rotates the shaft rod, and since the threaded sleeve is fixed, the shaft rod rotates and moves axially at the same time, thereby driving the energy dissipation inner cylinder 320 to move.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A water supply pipeline energy dissipation flow measurement system, characterized in that: include: An operation box (100), a water inlet pipe (200), an energy dissipation component (300) and a flow measurement component; The water inlet pipe (200) is installed on the operation box (100); The energy dissipation component (300) is connected to the end of the water inlet pipe (200), and the energy dissipation component (300) is located inside the operation box (100) and is in communication with the inside of the operation box (100); The flow measuring component comprises a flow stabilizing structure provided in the operation box (100) and a thin-walled weir (410) provided inside the operation box (100); the flow stabilizing structure is located between the energy dissipation component (300) and the thin-walled weir (410) and is used to mitigate water level fluctuations; The operation box (100) is provided with a water level monitor (500) and a flow meter (600), the water level monitor (500) being electrically connected to the flow meter (600), the water level monitor (500) being used to monitor the water depth at a position L upstream of the thin-walled weir (410) and to send water depth information to the flow meter (600), the flow meter (600) receiving the water depth information and calculating the flow rate passing through the thin-walled weir (410); The flow stabilizing structure comprises a plurality of baffles, wherein the baffles divide the interior of the operation box (100) into a first space (110), a second space (120) and a third space (130) arranged on the left and right, the energy dissipation component (300) is located in the first space (110), and the thin-walled weir (410) is located in the third space (130); The first space (110) is connected to the second space (120) via an overflow port (421), and the second space (120) is connected to the third space (130) via a water outlet (431), and the height of the overflow port (421) is greater than the height of the water outlet (431); The plurality of baffles are respectively an overflow plate (420) and a flow stabilizing plate (430); The bottom end of the overflow plate (420) is fixedly connected to the bottom wall of the operation box (100), and the overflow port (421) is formed between the top end of the overflow plate (420) and the top wall of the operation box (100); The top end of the flow stabilizing plate (430) is fixedly connected to the top wall of the operation box (100), and the water outlet (431) is formed between the bottom end of the flow stabilizing plate (430) and the bottom wall of the operation box (100); The top end of the overflow plate (420) is higher than the bottom end of the flow stabilizing plate (430); The outer side wall of the thin-walled weir (410) is provided with a flow guiding device (700), the flow guiding device (700) comprising a flow guiding groove (710), the flow guiding groove (710) being arranged to be inclined downward in a direction away from the outer side wall of the thin-walled weir (410); The top end of the overflow plate (420) is lower than an end of the guide groove (710) connected to the outer side wall of the thin-walled weir (410).

2. The water supply pipeline energy dissipation flow measurement system according to claim 1, characterized in that: The water level monitor (500) is arranged directly above a distance L upstream from the thin-wall weir (410).

3. The water supply pipeline energy dissipation flow measurement system according to claim 1, characterized in that: The water depth above the thin-wall weir (410) is H; Wherein, the L is greater than 5 to 8 times the H, and H is the distance between the top of the thin-wall weir (410) and the water surface in the operation box (100).

4. The water supply pipeline energy dissipation flow measurement system according to claim 1, characterized in that: The flow meter (600) is provided with a conversion module; The conversion module is used to convert the water depth information into the water depth above the weir, wherein the water depth above the weir is the difference between the water depth at a distance L upstream of the thin-walled weir (410) and the height of the thin-walled weir (410).

5. The water supply pipeline energy dissipation flow measurement system according to claim 1, characterized in that: One end of the guide groove (710) is hinged to the outer side wall of the thin-walled weir (410); The guide device (700) further comprises a support rod (720) and a telescopic joint (730) arranged on the support rod (720), wherein the support rod (720) is hinged between the guide groove (710) and the outer side wall of the thin-walled weir (410), and the telescopic joint (730) is used to control the length of the support rod (720) so as to adjust the inclination angle of the guide groove (710).

6. The water supply pipeline energy dissipation flow measurement system according to any one of claims 1 to 4, characterized in that: The energy dissipation assembly (300) comprises an energy dissipation outer cylinder (310) and an energy dissipation inner cylinder (320) which move relatively in the vertical direction. The energy dissipation outer cylinder (310) is provided with a plurality of groups of spray holes in the vertical direction. The number of spray holes opened can be adjusted by relative movement of the two.

7. The water supply pipeline energy dissipation flow measurement system according to claim 6, characterized in that: The water inlet pipe (200) comprises a curved pipe section and a vertical section, and the outlet of the vertical section is connected to the energy dissipation outer cylinder (310); The energy dissipation inner cylinder (320) is connected to an axis driving mechanism; The center line of the inlet of the curved pipe section is arranged horizontally.

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