Device, method, storage medium and equipment for measuring and calculating average flow of cross section of channel in any shape

Abstract

The invention relates to the technical field of flow measurement, in particular to a device for measuring and calculating average flow of river and canal sections in any shapes, which comprises a ship, a sonar device mounted on the ship and a flow velocity and water head measuring device, and the sonar device and the flow velocity and water head measuring device are both communicated with a data processing device. The flow velocity and water head measuring device is a Pitot tube, and the Pitot tube comprises an underwater protection tube wall, a pressure measuring tube water head measuring tube connected to the underwater protection tube wall through a first connector, and a full water head measuring tube connected to the underwater protection tube wall through a second connector and extending into the underwater protection tube wall. And the data processing device is connected with a data display module. According to the method, the representativeness and the accuracy of flow measurement data in actual engineering and hydraulic calculation can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of flow measurement, and in particular to a device, method, storage medium and equipment for measuring the average flow of a river channel section in any shape. Background Art

[0002] In water conservancy and hydropower projects, the flow calculation of the river is one of the basic parameters required for hydraulic calculations. At present, the instrument for measuring flow in actual projects is generally a flow meter, which can only measure the flow at a certain point in the river, and has poor representativeness and is difficult to reflect the overall flow of the river. There is an urgent need for a measurement solution that can measure the average flow of a river section of any shape. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies in the background technology and to propose a device and method, storage medium and equipment for measuring the average flow of a river channel section of any shape, so as to improve the representativeness and accuracy of flow measurement data in actual engineering and hydraulic calculations.

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

[0005] A device for measuring the average flow of a river channel section of arbitrary shape comprises a ship, a sonar device installed on the ship, and a flow velocity and water head measuring device, wherein the sonar device, flow velocity and water head measuring device all communicate with a data processing device.

[0006] In a further embodiment, the vessel comprises an unmanned vessel or a remote-controlled vessel.

[0007] In a further solution, the flow velocity and water head measuring device is a Pitot tube, which has a pressure measuring tube, a water head measuring tube and a total water head measuring tube.

[0008] In a further solution, the sonar device and the data processing device communicate with each other by wire or wirelessly;

[0009] The flow velocity and water head measuring device and the data processing device have wired communication or wireless communication.

[0010] In a further solution, the data processing device is connected to a data display module.

[0011] Another technical solution of the present invention is: a method for measuring the average flow rate of a river channel section of any shape,

[0012] Obtain the cross-sectional shape of the river channel and calculate the area of ​​the flow cross-section;

[0013] Obtain the flow velocity at multiple measuring points on the flow section and calculate the average flow velocity;

[0014] Calculate the product of the area of ​​the flow section and the average flow velocity to obtain the average flow rate flowing through the flow section.

[0015] In a further solution, the method for obtaining the cross-sectional shape of the river channel includes:

[0016] The ship carries a sonar device and travels from one side of the measured channel to the other side of the channel, perpendicular to the direction of the river. The sonar device transmits the measured underwater terrain data to the data processing device, which calculates the area of ​​the flow section.

[0017] In a further solution, the method for obtaining the flow velocity at multiple measuring points on the flow section includes:

[0018] During the course of sailing, the ship pauses for a certain period of time at different measuring points on the sailing path to obtain the water head and total water head data of the pressure measuring tube at each measuring point, which are transmitted to the data processing device for processing to obtain the flow velocity at each measuring point.

[0019] Another technical solution of the present invention is: a storage medium storing a computer program executable by a processor, wherein the computer program implements the steps of the method when executed.

[0020] Another technical solution of the present invention is: a computer device, comprising a memory and a processor, wherein the memory stores a computer program executable by the processor, and the steps of the method are implemented when the computer program is executed.

[0021] The beneficial effects of the present invention are:

[0022] The present invention uses ship-borne equipment to perform multi-point measurement on a river section, and can simply and quickly measure and calculate the average flow of any shape section through a natural river or an artificial channel in actual engineering, thereby improving the representativeness and accuracy of the flow measurement data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the structure of Example 1 of the present invention.

[0025] Figure 2 Schematic diagram of the structure of a Pitot tube in an embodiment of the present invention.

[0026] Figure 3The figure is a schematic diagram of the working process of measuring the cross-sectional shape of a river channel according to an embodiment of the present invention.

[0027] Figure 4 A simplified diagram of the measurement process of an embodiment of the present invention.

[0028] Figure numerals: vessel 1, sonar device 2, river channel 3, underwater terrain 4, data transmission component 5, data processing device 6, Pitot tube 7, underwater protective pipe wall 8, first connecting head 9, pressure measuring tube and water head measuring tube 10, second connecting head 11, full water head measuring tube 12, signal transmission line 13, display 14. DETAILED DESCRIPTION

[0029] In order to enable ordinary technicians in the field to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited to the following embodiments.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] Example 1

[0033] like Figure 1 As shown, this embodiment provides a device for measuring the average flow rate of a river channel section of arbitrary shape, including a vessel 1, a sonar device 2 installed at the bottom of the vessel 1, and a flow velocity and water head measuring device. The sonar device 2 and the flow velocity and water head measuring device all communicate with a data processing device 6. The data processing device 6 is connected to a data display module, such as a conventional display 14, via a signal transmission line 13, for displaying data processing results of the data processing device 6 and data such as the area of ​​the flow section.

[0034] In one embodiment, the data processing device 6 may be a computer. In one embodiment, the vessel 1 includes an unmanned vessel without remote control or a remote control vessel with manual remote control.

[0035] The sonar device 2 and the data processing device 6 communicate with each other by wired communication through a data transmission component 5 (such as a cable), or by wireless communication. The flow velocity and water head measuring device and the data processing device 6 communicate with each other by wired communication such as cable connection, or by wireless communication.

[0036] like Figure 2 As shown, the flow velocity and water head measuring device is a Pitot tube 7, which includes an underwater protective pipe wall 8, a pressure measuring pipe water head measuring pipe 10 connected to the underwater protective pipe wall 8 through a first connector 9, and a full water head measuring pipe 12 connected to the underwater protective pipe wall 8 through a second connector 11 and extending into the underwater protective pipe wall 8. Corresponding inductors (sensors) are provided in the pipes of the pressure measuring pipe water head measuring pipe 10 and the full water head measuring pipe 12.

[0037] like Figure 3 , Figure 4 As shown, the ship 1 slowly travels from one bank of the canal 3 to the other bank of the canal 3 perpendicularly, and stops briefly at different measuring points of the canal under the control of the remote control equipment of the on-site control personnel, and measures the water head and total water head data of the piezometer tube 7 to obtain the flow velocity of the water flow at the measuring point, and after the ship 1 reaches the other bank of the canal 3, the flow velocities measured at multiple measuring points are averaged to obtain the average flow velocity of the canal section. In this process, the cross-sectional shape data of the canal measured by the sonar device 2 is also transmitted to the data processing device 6, and the area of ​​the flow cross-section is obtained by the data processing device 6, and then the average flow velocity of the canal section is calculated in combination with the average flow velocity of the canal section.

[0038] Embodiment 2: A method for measuring the average flow rate of a canal section of arbitrary shape, using the device described in Embodiment 1, comprises the following steps:

[0039] Obtain the cross-sectional shape of the river channel and calculate the area of ​​the flow cross-section;

[0040] Obtain the flow velocity at multiple measuring points on the flow section and calculate the average flow velocity;

[0041] Calculate the product of the area of ​​the flow section and the average flow velocity to obtain the average flow rate flowing through the flow section.

[0042] In the above method, the method of obtaining the cross-sectional shape of the river channel includes:

[0043] The ship 1 carries a sonar device 2 on the bottom of the ship, and slowly moves from one side of the river channel 3 to the other side of the river channel 3 perpendicular to the river channel direction. The underwater terrain 4 measured by the sound wave reflection device is transmitted to the data processing device 6. The data processing device 6 calculates the cross-sectional area of ​​the measured terrain through calculation and with the help of the principle of Green's formula;

[0044] Green's formula for measuring area principle:

[0045] According to Green's formula, when (Constant),∮P(x,y)dx+Q(x,y)dy=A∫∫ D dx dy=A×S D

[0046] That is: the area of ​​the polygon enclosed by L

[0047]

[0048] The vessel 1 detects and draws the canal flow section and the polygonal area enclosed by the canal water surface by means of the sound wave reflection of the sonar device 2. The polygonal area is an area enclosed by a finite number of polylines, where the line segments can be represented as: Then the cross-sectional area of ​​the measured river channel section is:

[0049]

[0050] In the above method, the method for obtaining the flow velocity at multiple measuring points on the flow section includes:

[0051] The vessel 1 slowly moves from one bank of the canal 3 to the other bank perpendicular to the canal 3, and under the control of the remote control equipment of the on-site control personnel, stops briefly at different measuring points in the canal, and uses the Pitot tube 7 to measure the pressure tube head and total head data to obtain the flow velocity of the water flow at the measuring point. After the vessel 1 reaches the other bank of the canal 3, the flow velocities measured at multiple measuring points are averaged to obtain the average flow velocity of the canal section.

[0052] Principle of Pitot tube flow velocity measurement:

[0053] Piezometric tube head Piezometric tube head measured by measuring tube 10: Total water head measured by total water head measuring tube 12 The head difference between the two water heads Then, the data processing device 6 calculates:

[0054]

[0055] The data processing device 6 further calculates the average flow rate Q = A × v of the measured section based on the calculated river channel cross-sectional area A and the average flow velocity data v of the water flow in the section, and transmits the calculated cross-sectional area A, the flow velocities at different measuring points of the river channel section and the calculated average flow velocity, and the calculated cross-sectional average flow rate Q to the display 14 through the signal transmission line 13.

[0056] Embodiment 3: A storage medium stores a computer program that can be executed by a processor, and the computer program implements the steps of the method described in Embodiment 2 when executed.

[0057] Embodiment 4: A computer device comprises a memory and a processor, wherein the memory stores a computer program executable by the processor, and the steps of the method described in Embodiment 2 are implemented when the computer program is executed.

[0058] The above is only a preferred embodiment of the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for measuring the average flow rate of a river or canal cross section of any shape, characterized in that: The invention comprises a vessel, a sonar device installed on the vessel, and a flow velocity and water head measuring device, wherein the sonar device, the flow velocity and water head measuring device are all in communication with a data processing device.

2. A device for measuring the average flow rate of a river or canal section of any shape according to claim 1, characterized in that: The vessel includes an unmanned vessel or a remote-controlled vessel.

3. The device for measuring the average flow rate of a river or canal section of any shape according to claim 1, characterized in that: The flow velocity and water head measuring device is a Pitot tube, which includes an underwater protective pipe wall, a pressure measuring tube and a water head measuring tube connected to the underwater protective pipe wall through a first connecting head, and a full water head measuring tube connected to the underwater protective pipe wall through a second connecting head and extending into the interior of the underwater protective pipe wall.

4. The device for measuring the average flow rate of a river or canal section of any shape according to claim 1, characterized in that: There is wired or wireless communication between the sonar device and the data processing device; The flow velocity and water head measuring device and the data processing device have wired communication or wireless communication.

5. The device for measuring the average flow rate of a river or canal section of any shape according to claim 1, characterized in that: The data processing device is connected to a data display module.

6. A method for measuring the average flow rate of a river or canal cross section of any shape, characterized in that: Obtain the cross-sectional shape of the river channel and calculate the area of ​​the flow cross-section; Obtain the flow velocity at multiple measuring points on the flow section and calculate the average flow velocity; Calculate the product of the area of ​​the flow section and the average flow velocity to obtain the average flow rate flowing through the flow section.

7. A method for measuring the average flow rate of a river or canal section of any shape according to claim 6, characterized in that: Methods for obtaining the cross-sectional shape of rivers and canals include: The ship carries a sonar device and travels from one side of the measured channel to the other side of the channel, perpendicular to the direction of the river. The sonar device transmits the measured underwater terrain data to the data processing device, which calculates the area of ​​the flow section.

8. A method for measuring the average flow rate of a river or canal section of any shape according to claim 7, characterized in that: Methods for obtaining flow velocities at multiple measuring points on a flow section include: During the course of sailing, the ship pauses for a certain period of time at different measuring points on the sailing path to obtain the water head and total water head data of the pressure measuring tube at each measuring point, which are transmitted to the data processing device for processing to obtain the flow velocity at each measuring point.

9. A storage medium having stored thereon a computer program executable by a processor, characterized in that: The computer program implements the steps of the method according to claim 6 when being executed.

10. A computer device comprising a memory and a processor, wherein the memory stores a computer program executable by the processor, wherein: The computer program implements the steps of the method according to claim 6 when being executed.

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