Wading flow measuring device

Abstract

A wading flow measuring device relates to the field of river flow monitoring in low and dry seasons and is used for solving the problem that sliding between a main rod and an auxiliary rod is inconvenient. The wading flow measuring device comprises a main rod, an auxiliary rod, a handle and a speed measuring instrument, scale marks are arranged on a rod body of the main rod, a strip-shaped groove is formed in the main rod, the strip-shaped groove extends in the axis direction of the main rod, and the strip-shaped groove penetrates through the outer wall of one side of the main rod so that a strip-shaped opening can be formed in the main rod; the auxiliary rod is arranged in the strip-shaped groove, and the auxiliary rod is arranged in the strip-shaped groove in a sliding mode along the axis of the strip-shaped groove; one end of the handle is fixedly connected with the auxiliary rod, and the other end of the handle extends out of the strip-shaped opening in the direction perpendicular to the axis of the main rod. The speed measuring instrument is fixedly connected with the bottom of the auxiliary rod, and the speed measuring instrument is located outside the main rod in the direction perpendicular to the axis of the main rod. The height of the auxiliary rod and the height of the flow meter can be adjusted by adjusting the position of the handle, operation can be achieved without adjustment of a hand holding the main rod, and wading flow measurement work is facilitated.

Description

Technical Field

[0001] The present application relates to the field of river flow monitoring during low-dry season, and in particular to a water-wading flow measuring device. Background Art

[0002] Small flow test is a type of flow test in the hydrological industry and an important part of hydrological river flow monitoring. Artificial wading flow measurement is the main method of small flow test in the hydrological industry. The current test process is: ① Manual measurement of starting point distance and water surface width ② Uniformly arrange velocity measurement vertical lines ③ Manual measurement of vertical line water depth ④ Manual calculation of the velocity meter measuring point position, and use an ordinary depth measuring rod with a velocity meter hanging on it to lower the velocity meter to the measuring point position ⑤ Manual use of a stopwatch to record the velocity meter signal number ⑥ Manually record the time and signal number, calculate the velocity, and fill in the "depth measurement, velocity measurement record and flow calculation table" and "actual flow measurement results table".

[0003] The Chinese patented semi-automatic wading flow measurement system, with a patent application date of March 9, 2021 and publication number CN115046534A, combines a depth meter and a current meter, thereby simultaneously measuring water flow velocity and water depth through an integrated current measuring rod, which is simple and convenient.

[0004] In this solution, the current meter is slidably connected to the main rod body through a sub-rod. When detecting the flow rate, the position of the current meter needs to be adjusted according to different water depths. At the same time, the flow rate needs to be detected at each depth position of the water flow. When using this solution, it is still necessary to first detect the water flow velocity at the bottom of the water flow (river bottom), then synchronize the water depth reading, and adjust the height of the sub-rod according to the water depth, and repeat multiple times to complete the detection.

[0005] However, the auxiliary rod is an outer rod, which is slidably connected to the main rod. The rod body is relatively thin as a whole. When measuring the water depth, the user holds the main rod and the auxiliary rod. When adjusting the height of the current meter, the hand-holding part on the cross-section of the main rod is small, which makes it inconvenient to slide between the auxiliary rod and the main rod. At the same time, when the water flow rate is high, it is easy to cause impact on the auxiliary rod, causing relative sliding between the auxiliary rod and the main rod. Summary of the invention

[0006] The present application provides a wading flow measuring device, which is used to solve the problem of inconvenient sliding between a main rod and a secondary rod.

[0007] The present application provides a wading current measuring device, comprising a main rod, a sub-rod, a handle and a speedometer, wherein scale lines are arranged on the rod body of the main rod, a strip groove is formed on the main rod, the strip groove extends along the axial direction of the main rod, and the strip groove passes through an outer wall of one side of the main rod to form a strip opening on the main rod; the sub-rod is arranged in the strip groove, and the sub-rod is slidably arranged in the strip groove along the axis of the strip groove; one end of the handle is fixedly connected to the sub-rod, and the other end of the handle extends to the outside of the strip opening along the direction perpendicular to the axial direction of the main rod; the speedometer is fixedly connected to the bottom of the sub-rod, and the speedometer is located outside the main rod along the direction perpendicular to the axial direction of the main rod.

[0008] The sub-rod in the present application is arranged inside the main rod, and the height of the sub-rod can be adjusted by the handle, thereby changing the height position of the speedometer. When the height of the speedometer needs to be adjusted, it is only necessary to judge the water flow velocity at the depth to be measured by the water depth reading, and then the user holds the main rod body with one hand and uses the other hand to lift the sub-rod upwards according to the scale on the main rod through the handle, which is more convenient to operate.

[0009] In some embodiments of the present application, along the direction perpendicular to the axis of the main rod, the cross-section of the strip groove is circular, and the cross-section of the auxiliary rod is circular. When the cross-sections of the auxiliary rod and the strip groove are circular, the strip opening width of the strip groove can be made smaller than the diameter of the auxiliary rod, so as to prevent the auxiliary rod from being laterally separated from the main rod when in use.

[0010] In some embodiments of the present application, a limiting groove and a limiting protrusion are provided between the main rod and the auxiliary rod, the limiting groove extends along the axis direction of the main rod, and the limiting protrusion is slidably provided in the limiting groove along the extension direction of the limiting groove. The limiting groove and the limiting protrusion can be mutually engaged, thereby preventing the auxiliary rod and the main rod from rotating relative to each other around the axis direction of the main rod, which helps to protect the flow meter and ensure the connection strength between the flow meter and the auxiliary rod.

[0011] In some embodiments of the present application, the limiting groove is arranged on the main rod, and the limiting groove is concave along the inner wall of the strip groove toward the main rod; the limiting protrusion is arranged on the auxiliary rod. The limiting groove is arranged on the main rod and the limiting protrusion is arranged on the auxiliary rod to achieve the above effect.

[0012] In some embodiments of the present application, along the direction perpendicular to the axis of the main rod, the strip groove passes through the two opposite side walls of the main rod to form two strip openings, and two handles are provided, the two handles are respectively fixedly connected to the auxiliary rod, and the two handles are respectively provided at the two strip openings. The two handles enable the inspector to adjust the height of the auxiliary rod with either hand, and the inspector can have good practicality no matter which side of the river he is on.

[0013] In some embodiments of the present application, the two handles are arranged at the same height of the auxiliary rod. Arranging the two handles at the same height of the auxiliary rod can prevent the other handle from contacting the arm holding the main rod when operating one of the handles, thereby improving the safety of operation.

[0014] In some embodiments of the present application, an indicator needle is provided on the handle, and the indicator needle points to the scale on the main rod. The indicator needle helps the user to read the reading and helps to adjust the height of the flow meter.

[0015] In some embodiments of the present application, the secondary rod is coaxially arranged with the main rod. The coaxial arrangement of the secondary rod and the main rod can make the two handles located on opposite sides of the main rod, so that the interval between the two handles is equal, which helps the user to use the handle on either side.

[0016] In some embodiments of the present application, the secondary rod is not coaxial with the main rod. The secondary rod and the main rod are not coaxial, which will cause the two handles to deviate to the same side of the main rod. When using, the user can turn the main rod with the handle toward himself, so that the handle is closer to himself, which helps to adjust the height of the secondary rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.

[0018] Figure 1 A schematic diagram of an existing semi-automatic wading flow measurement system provided for this application.

[0019] Figure 2 A schematic diagram of a water-wading flow measuring device provided in an embodiment of the present application.

[0020] Figure 3 This is one of the cross-sectional schematic diagrams of a water-wading flow measuring device provided in an embodiment of the present application.

[0021] Figure 4 This is a second cross-sectional schematic diagram of a water-wading flow measuring device provided in an embodiment of the present application.

[0022] Figure numerals: a-main rod; b-auxiliary rod; 1-main rod; 11-scale line; 12-bar groove; 13-bar opening; 14-limiting protrusion; 2-auxiliary rod; 21-limiting groove; 3-handle; 31-indicator needle; 4-speedometer. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0025] 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, unless otherwise specified, "plurality" means two or more.

[0026] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, when describing a pipeline, the "connected" and "connection" used in this application have the meaning of conduction. The specific meaning needs to be understood in conjunction with the context.

[0027] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0028] Small flow test is a type of flow test in the hydrological industry and an important part of hydrological river flow monitoring. Artificial wading flow measurement is the main method of small flow test in the hydrological industry. The current test process is: ① Manual measurement of starting point distance and water surface width ② Uniformly arrange velocity measurement vertical lines ③ Manual measurement of vertical line water depth ④ Manual calculation of the velocity meter measuring point position, and use an ordinary depth measuring rod with a velocity meter hanging on it to lower the velocity meter to the measuring point position ⑤ Manual use of a stopwatch to record the velocity meter signal number ⑥ Manually record the time and signal number, calculate the velocity, and fill in the "depth measurement, velocity measurement record and flow calculation table" and "actual flow measurement results table".

[0029] The Chinese patented semi-automatic wading flow measurement system, with a patent application date of March 9, 2021 and publication number CN115046534A, combines a depth meter and a current meter, thereby simultaneously measuring water flow velocity and water depth through an integrated current measuring rod, which is simple and convenient.

[0030] Please refer to Figure 1 In this scheme, the current meter is slidably connected to the main rod a through the auxiliary rod b. When detecting the flow rate, the position of the current meter needs to be adjusted according to different water depths. At the same time, the flow rate needs to be detected at each depth position of the water flow. When using this scheme, it is still necessary to first detect the flow velocity at the bottom of the water flow (river bottom), then synchronize the water depth reading, and adjust the height of the auxiliary rod according to the water depth, and repeat multiple times to complete the detection.

[0031] However, the auxiliary rod b is an outer rod, which is slidably connected to the main rod a. The rod body is relatively thin as a whole, and the auxiliary rod b will wrap 40%-50% of the outer wall of the main rod a. At the same time, the diameter of the auxiliary rod b is larger than the diameter of the main rod a. The user needs to hold the main rod a or the auxiliary rod b with his hand and fix the other part with his fingers to ensure that the height of the flow meter is the water flow depth that needs to be detected.

[0032] When the user adjusts the height of the flow meter, the small gripped portion of the main rod a will make it inconvenient to slide and adjust the auxiliary rod b against the main rod a. This will also cause the main rod a and the auxiliary rod b to easily slide in the height direction. At the same time, when the water flow rate is high, it is easy to impact the auxiliary rod b, causing relative sliding between the auxiliary rod b and the main rod a, affecting the detection data.

[0033] To do this, please refer to Figure 2 The present application provides a new wading flow measuring device, comprising a main rod 1, a secondary rod 2, a handle 3 and a speed meter 4.

[0034] Please refer to Figure 2 , the rod body of the main rod 1 is provided with a scale line 11, and a strip groove 12 is formed on the main rod 1, and the strip groove 12 extends along the axis direction of the main rod 1, and the strip groove 12 passes through one side outer wall of the main rod 1 to form a strip opening 13 on the main rod 1. The main rod 1 can be a metal rod body, or a plastic rod body, and the main rod 1 can be cylindrical or prism-shaped; the strip groove 12 can pass through the main rod 1, or can be only set in the middle of the main rod 1 or in a preset height area. Since the flow velocity at the bottom of the water needs to be detected, a sharp area can be set at the bottom of the main rod 1 to facilitate piercing into the riverbed, and the strip opening 13 can be rectangular.

[0035] Please refer to Figure 2The auxiliary rod 2 is arranged in the strip groove 12, and the auxiliary rod 2 is slidably arranged in the strip groove 12 along the axis of the strip groove 12. The cross-sectional shape of the auxiliary rod 2 can be similar to the cross-sectional shape of the strip groove 12, and the auxiliary rod 2 can be made of the same material as the main rod 1, which can be a metal material or a plastic material. Since the flow meter is arranged on the auxiliary rod 2, in order to reduce the influence of buoyancy on the auxiliary rod 2 and ensure the stability of the position of the auxiliary rod 2, the auxiliary rod 2 can be made of a metal material with a density greater than the water density.

[0036] Please refer to Figure 2 One end of the handle 3 is fixedly connected to the secondary rod 2, and the other end of the handle 3 extends to the outside of the strip opening 13 along the axis direction perpendicular to the main rod 1. The handle 3 can be a cylindrical structure or other shapes. The handle 3 can be a hollow material or a solid material. The handle 3 can be threadedly connected to the secondary rod 2, or can be clamped or welded to the secondary rod 2.

[0037] Please refer to Figure 2 The speed meter 4 is fixedly connected to the bottom of the auxiliary rod 2, and is located outside the main rod 1 along the axis direction perpendicular to the main rod 1. The speed meter 4 can be a conventional water flow velocity meter 4, and the speed meter 4 and the auxiliary rod 2 can be fixedly connected, and the specific connection method can be bolt connection, or can also be welding or other connection methods.

[0038] Please refer to Figure 2 The auxiliary rod 2 in the present application is arranged inside the main rod 1, and the height of the auxiliary rod 2 can be adjusted by the handle 3, thereby changing the height position of the speedometer 4. When the height of the speedometer 4 needs to be adjusted, it is only necessary to judge the water flow velocity at the depth to be measured by the water depth reading, and then the user holds the main rod 1 with one hand and uses the handle 3 with the other hand to lift the auxiliary rod 2 upward according to the scale on the main rod 1, which is more convenient to operate.

[0039] Please refer to Figure 2 In some examples, the secondary rod 2 and the main rod 1 in this scheme can be a detachable structure, such as the strip groove 12 can be passed through the top end of the main rod 1 along the axial direction of the main rod 1. At this time, the secondary rod 2 can be slid out of the main rod 1 along the axis of the main rod 1 to realize the installation and disassembly between the main rod 1 and the secondary rod 2.

[0040] Please refer to Figure 2 At the same time, in order to ensure stability during use, a detachable block can be provided at the top of the main rod 1, and an opening can be formed in the middle of the block to facilitate the sliding of the auxiliary rod 2.

[0041] Please refer to Figure 3 In some examples, a gap may be provided between the main rod 1 and the auxiliary rod 2 to reduce the friction between the main rod 1 and the auxiliary rod 2 .

[0042] In some examples, a corresponding limiting structure may be further provided on the main rod 1. When the auxiliary rod 2 is raised or lowered to a predetermined position, the main rod 1 and the auxiliary rod 2 may be relatively fixed by the limiting structure to ensure the stability of the data of the detection.

[0043] Please refer to Figure 3 In some examples, along the direction perpendicular to the axis of the main rod 1, the cross-sectional shape of the strip groove 12 is circular, and the cross-sectional shape of the auxiliary rod 2 is circular. When the cross-sections of the auxiliary rod 2 and the strip groove 12 are circular, the width of the strip opening 13 of the strip groove 12 can be made smaller than the diameter of the auxiliary rod 2, so as to prevent the auxiliary rod 2 from being laterally separated from the main rod 1 when in use.

[0044] Please refer to Figure 3 In some examples, the circle can be a standard circle, or it can also be an ellipse or an incomplete circle, that is, an arc. No matter which scheme is adopted, the relative sliding between the main rod 1 and the auxiliary rod 2 can be achieved, thereby achieving the corresponding flow meter height adjustment effect.

[0045] Please refer to Figure 3 In some examples, when the width diameter of the strip groove is smaller than the diameter of the secondary rod 2 , that is, along the direction perpendicular to the axis of the main rod 1 , the width line of the strip groove is smaller than the width of the narrowest area of ​​the secondary rod 2 .

[0046] Please refer to Figure 3 In some examples, a limiting groove 21 and a limiting protrusion 14 are provided between the main rod 1 and the auxiliary rod 2, the limiting groove 21 extends along the axis direction of the main rod 1, and the limiting protrusion 14 is slidably provided in the limiting groove 21 along the extension direction of the limiting groove 21. The limiting groove 21 and the limiting protrusion 14 can be engaged with each other, thereby preventing the auxiliary rod 2 and the main rod 1 from rotating relative to each other around the axis direction of the main rod 1, which helps to protect the flow meter and ensure the connection strength between the flow meter and the auxiliary rod 2.

[0047] In some examples, the limiting protrusion 14 and the limiting groove 21 prevent the main rod 1 and the auxiliary rod 2 from sliding relative to each other. Therefore, the auxiliary rod 2 can also be set to an elliptical shape, and the cross-section of the strip groove 12 can be set to an elliptical shape, which can also achieve the expected effect.

[0048] In some examples, the limiting groove 21 and the limiting protrusion 14 are arranged on the contact area between the main rod 1 and the auxiliary rod 2. The length of the limiting protrusion 14 can be smaller and set to multiple, or it can also be the same as the height of the auxiliary rod 2, and the expected effect can be achieved.

[0049] Please refer to Figure 3In some examples, the limiting groove 21 is provided on the main rod 1, and the limiting groove 21 is recessed along the inner wall of the strip groove 12 toward the main rod 1; the limiting protrusion 14 is provided on the auxiliary rod 2. The limiting groove 21 is provided on the main rod 1 and the limiting protrusion 14 is provided on the auxiliary rod 2 to achieve the above effect.

[0050] In some examples, the limiting groove 21 can be set to one or more.

[0051] In some other examples, the limiting groove 21 may also be provided on the auxiliary rod 2, and the limiting protrusion 14 may be provided on the inner wall of the main rod 1, which may also achieve the corresponding matching and limiting effects.

[0052] Please refer to Figure 3 In some examples, along the direction perpendicular to the axis of the main pole 1, the strip groove 12 passes through the opposite side walls of the main pole 1 to form two strip openings 13, and two handles 3 are provided, the two handles 3 are respectively fixedly connected to the auxiliary pole 2, and the two handles 3 are respectively provided at the two strip openings 13. The two handles 3 allow the inspector to adjust the height of the auxiliary pole 2 with either hand, and can have good practicality no matter which side of the river.

[0053] In some examples, the two handles 3 are arranged at the same height of the secondary rod 2. Arranging the two handles 3 at the same height of the secondary rod 2 can prevent the other handle 3 from contacting the arm holding the main rod 1 when operating one of the handles 3, thereby improving the safety of operation.

[0054] Please refer back to Figure 2 In some examples, an indicator needle 31 is provided on the handle 3, and the indicator needle 31 faces the scale on the main rod 1. The indicator needle 31 helps the user to read the reading and helps to adjust the height of the flow meter.

[0055] Please refer to Figure 3 In some examples, the secondary rod 2 is coaxially arranged with the main rod 1. The coaxial arrangement of the secondary rod 2 and the main rod 1 can make the two handles 3 located on opposite sides of the main rod 1, so that the interval between the two handles 3 is equal, which helps the user to use the handle 3 on either side.

[0056] Please refer to Figure 4 In some other examples, the auxiliary rod 2 is not coaxial with the main rod 1. The auxiliary rod 2 is not coaxial with the main rod 1, which will cause the two handles 3 to deviate to the same side of the main rod 1. When using, the user can turn the main rod 1 with the handle 3 toward himself, so that the handle 3 is closer to himself, which helps to adjust the height of the auxiliary rod 2.

[0057] In the description of this specification, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0058] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A wading flow measuring device, characterized in that: include: A main rod, a rod body is provided with scale lines, a strip groove is formed on the main rod, the strip groove extends along the axis direction of the main rod, and the strip groove passes through one side outer wall of the main rod to form a strip opening on the main rod; A secondary rod is arranged in the strip groove, and the secondary rod is slidably arranged in the strip groove along the axis of the strip groove; A handle, one end of which is fixedly connected to the auxiliary rod, and the other end of which extends out of the strip-shaped opening in a direction perpendicular to the axis of the main rod; A speedometer is fixedly connected to the bottom of the auxiliary rod and is located outside the main rod in a direction perpendicular to the axis of the main rod.

2. A wading flow measuring device according to claim 1, characterized in that: Along the direction perpendicular to the axis of the main rod, the cross-sectional shape of the strip groove is circular, and the cross-sectional shape of the auxiliary rod is circular.

3. A wading flow measuring device according to claim 2, characterized in that: A limiting groove and a limiting protrusion are arranged between the main rod and the auxiliary rod, the limiting groove extends along the axial direction of the main rod, and the limiting protrusion is slidably arranged in the limiting groove along the extending direction of the limiting groove.

4. A wading flow measuring device according to claim 3, characterized in that: The limiting groove is arranged on the main rod, and the limiting groove is recessed along the inner wall of the strip groove in the direction of the main rod; The limiting protrusion is arranged on the auxiliary rod.

5. A wading flow measuring device according to any one of claims 1 to 4, characterized in that: Along the direction perpendicular to the axis of the main rod, the strip groove penetrates the two opposite side walls of the main rod to form two strip openings. The number of the handles is two, the two handles are fixedly connected to the auxiliary rods respectively, and the two handles are respectively arranged at the two strip-shaped openings.

6. A wading flow measuring device according to claim 5, characterized in that: The two handles are arranged at the same height of the auxiliary rod.

7. A wading flow measuring device according to claim 1, characterized in that: The handle is provided with an indicator needle, and the indicator needle faces the scale on the main rod.

8. A wading flow measuring device according to claim 1, characterized in that: The secondary rod is coaxially arranged with the main rod.

9. A wading flow measuring device according to claim 1, characterized in that: The secondary rod is not coaxially arranged with the primary rod.

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