CN114397471A

CN114397471A - Novel angle current meter

Info

Publication number: CN114397471A
Application number: CN202210158465.4A
Authority: CN
Inventors: 何阵营; 何艺璇; 张恒瑞; 何艺昊
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-02-21
Filing date: 2022-02-21
Publication date: 2022-04-26

Abstract

The invention relates to the technical field of flow velocity measurement, in particular to a novel angular flow velocity meter which comprises a display structure and a pendant, wherein the display structure is connected with the pendant through a cord and comprises a rotating mechanism and a scale structure; compared with the prior art, the method has the advantages of low cost and high performance-price ratio on the premise of accurately measuring the water flow velocity of the channel.

Description

Novel angle current meter

Technical Field

The invention relates to the technical field of flow velocity measurement, in particular to a novel angle flow velocity meter.

Background

Based on the characteristics that the flow velocity meter with a precise instrument can accurately measure the flow velocity, the flow velocity meter has the defects of higher cost and lower cost performance, and the defects are more prominent particularly under the conditions that the flow velocity of the channel water flow is small and the flow velocity condition is not complex.

Disclosure of Invention

In view of this, the present invention provides a novel angular flow meter, which has a low cost and a high performance-to-cost ratio on the premise of accurately measuring the flow velocity of water in a channel.

In order to achieve the purpose, the novel angle flow meter provided by the invention adopts the following technical scheme:

novel angle current meter, including the pendant that is located the display structure of the surface of water upside and is located the surface of water downside, the display structure passes through the cotton rope with the pendant and is connected, the display structure includes the slewing mechanism who is connected with the cotton rope and cooperates the scale structure in order to show that the pendant promotes down turned angle at rivers with slewing mechanism.

Further, the display structure comprises a shell, the rotating mechanism comprises a gear set which is rotatably assembled in the shell, a pointer is arranged on the gear set, the scale structure comprises a scale plate which is fixed in the shell and corresponds to the pointer, and the wire rope is installed on the gear set through a hook.

Furthermore, the gear set comprises two rotating shafts which are rotatably assembled in the shell and are arranged in parallel, a large gear is fixed on one rotating shaft, a small gear meshed with the large gear is fixed on the other rotating shaft, the wire rope is installed on the large gear through a hook, and the pointer is fixed on the rotating shaft for fixing the small gear.

Further, the gear ratio of the large gear to the small gear is 3: 1.

Further, a transparent observation window corresponding to the scale plate is arranged on the shell and used for workers to observe.

Further, the scale plate is detachably fixed in the shell.

Further, the thread rope is a flexible rope.

Furthermore, the pendant is made of metal lead.

The novel angular flow velocity meter provided by the invention has the beneficial effects that: when fluid generates a certain flow velocity, the pendant is pushed to act, the large gear is driven to rotate through the cord, the small gear meshed with the large gear is arranged, the small-amplitude rotation of the large gear is converted into the large-amplitude rotation of the small gear, so that the rotation change of the pointer can be observed conveniently, a worker reads out the reading on the scale plate through the transparent observation window to obtain the rotation angle, according to the principle of physics, under the condition that the density of the pendant is known, the instantaneous flow velocity of the fluid is in direct proportion to the tangent of the rotation angle, and at the moment, the instantaneous flow velocity of the fluid can be obtained through the rotation angle according to the formula of physics; compared with the prior art, the method has the advantages of low cost and high performance-price ratio on the premise of accurately measuring the water flow velocity of the channel.

Drawings

FIG. 1 is a top view of the display structure of the novel angular flow rate meter provided by the present invention;

fig. 2 is a schematic diagram of a pendant and a wire rope of the novel angular flow meter in water.

Reference numbers in the figures: 1. a pendant; 2. a cord; 3. a housing; 4. a pointer; 5. a scale plate; 6. a rotating shaft; 7. a bull gear; 8. a pinion gear; 9. a transparent viewing window; 10. and (4) hanging hooks.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention, are within the scope of the invention.

The first embodiment: as shown in fig. 1 and 2, a novel angle current meter comprises a display structure located on the upper side of the water surface and a pendant 1 located on the lower side of the water surface, wherein the display structure is connected with the pendant 1 through a cord 2, and comprises a rotating mechanism connected with the cord 2 and a scale structure matched with the rotating mechanism to display the rotating angle of the pendant 1 under the pushing of water flow.

The display structure comprises a shell 3, the rotating mechanism comprises a gear set which is rotatably assembled in the shell 3, a pointer 4 is arranged on the gear set, the scale structure comprises a scale plate 5 which is fixed in the shell 3 and corresponds to the pointer 4, and the wire rope 2 is installed on the gear set through a hook 10.

The gear set comprises two rotating shafts 6 which are rotatably assembled in the shell 3 and are arranged in parallel, a gearwheel 7 is fixed on one rotating shaft 6, a pinion 8 meshed with the gearwheel 7 is fixed on the other rotating shaft 6, the cord 2 is installed on the gearwheel 7 through a hook 10, and the pointer 4 is fixed on the rotating shaft 6 for fixing the pinion 8.

The gear ratio of the big gear 7 to the small gear 8 is 3: 1.

And a transparent observation window 9 corresponding to the scale plate 5 is further arranged on the shell 3 for the staff to observe. In this embodiment, the transparent viewing window 9 is glass.

The scale plate 5 is detachably fixed in the housing 3. In the present embodiment, the scale plate 5 is mounted in the housing 3 by screws.

The cord 2 is a flexible cord.

The pendant 1 is made of metal lead.

According to the principle of physics: under the static state, the object is under the action of gravity, buoyancy and the traction force of the rope. Gravity G is the residual product of the mass m of the object and the gravitational acceleration G: g = mg in newtons (N), kilograms (kg) and 9.8m/s2 in international units. Buoyancy is the weight of the object excluding liquid, F float = ϒ liquid V liquid, ϒ liquid of water =1kg/m3, then F float = V liquid; according to Newton's law of force, the tensile force F = G-Ffloat = mg-V liquid. When the water flows from one direction to the other, a velocity v is generated which gives F water in the horizontal direction. F water = Ftan θ, mv = (mg-V liquid) tan θ; v = (1-1/ϒ substance) g tan θ since V liquid = mg/ϒ substance

This indicates that, in the case of a constant object, density ϒ is a constant and the instantaneous flow rate of the fluid is proportional to the tangent of the angle.

The novel angular flow velocity meter provided by the invention has the beneficial effects that: when fluid generates a certain flow velocity, the pendant 1 is pushed to act, the large gear 7 is driven to rotate through the cord 2, the small gear 8 meshed with the large gear 7 is arranged, the small-amplitude rotation of the large gear 7 is converted into the large-amplitude rotation of the small gear 8, so that the rotation change of the pointer 4 is convenient to observe, a worker reads out a reading on the scale plate 5 through the transparent observation window 9 to obtain a rotation angle, according to the principle of physics, under the condition that the density of the pendant 1 is known, the instantaneous flow velocity of the fluid is in direct proportion to the tangent of the rotation angle, and at the moment, the instantaneous flow velocity of the fluid can be obtained through the rotation angle according to the formula of physics; compared with the prior art, the method has the advantages of low cost and high performance-price ratio on the premise of accurately measuring the water flow velocity of the channel.

Second embodiment:

this embodiment differs from the first embodiment in that the metal lead can be replaced by other metals, such as aluminum, steel, copper, or a mixture of two or more of the above metals can be used to form the pendant.

The third embodiment:

this embodiment differs from the first embodiment in that the transparent viewing window may be an acrylic plate instead of glass.

The fourth embodiment:

the present embodiment differs from the first embodiment in that the gear ratio of the gearwheel and the pinion may also be other than 3: 1, for example 4: 1.

In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. Novel angle current meter, its characterized in that: the water surface display device comprises a display structure located on the upper side of the water surface and a pendant located on the lower side of the water surface, wherein the display structure is connected with the pendant through a wire rope, and the display structure comprises a rotating mechanism connected with the wire rope and a scale structure matched with the rotating mechanism to display the rotating angle of the pendant under the pushing of water flow.

2. The novel angular flow velocity meter according to claim 1, characterized in that: the display structure comprises a shell, the rotating mechanism comprises a gear set which is rotatably assembled in the shell, a pointer is arranged on the gear set, the scale structure comprises a scale plate which is fixed in the shell and corresponds to the pointer, and the wire rope is installed on the gear set through a hook.

3. The novel angular flow velocity meter according to claim 2, characterized in that: the gear set comprises two rotating shafts which are rotatably assembled in the shell and are arranged in parallel, a large gear is fixed on one rotating shaft, a small gear meshed with the large gear is fixed on the other rotating shaft, the cord is installed on the large gear through a hook, and the pointer is fixed on the rotating shaft for fixing the small gear.

4. The novel angular flow velocity meter according to claim 3, characterized in that: the gear ratio of the big gear to the small gear is 3: 1.

5. The novel angular flow rate meter according to any one of claims 2 to 4, wherein: and the shell is also provided with a transparent observation window corresponding to the scale plate for workers to observe.

6. The novel angular flow rate meter according to any one of claims 2 to 4, wherein: the scale plate is fixed in the shell in a detachable mode.

7. The novel angular flow rate meter according to any one of claims 1 to 4, wherein: the thread rope is a flexible soft rope.

8. The novel angular flow rate meter according to any one of claims 1 to 4, wherein: the pendant is made of metal lead.