CN219831128U - Speed measuring mechanism of water impulse flow velocity meter - Google Patents

Abstract

The utility model discloses a speed measuring mechanism of a water impact flow velocity meter, which comprises a bracket, wherein a rotating shaft is arranged on the bracket, the rotating shaft is vertically connected with a connecting rod, one end of the connecting rod is connected with a hollow sphere, the bottom of the sphere is provided with a water inlet hole, the sphere is provided with an air vent, the water inlet hole and the air vent are both communicated with the inner cavity of the sphere, an encoder is also arranged on the bracket, and the encoder encodes and outputs the rotating angle of the rotating shaft. The speed measuring mechanism of the water impulse flow velocity meter can be suitable for water flows with different sediment contents, can effectively avoid grass wadding winding in water, and has accurate speed measurement and convenient use.

Description

Speed measuring mechanism of water impulse flow velocity meter

Technical Field

The utility model relates to a speed measuring mechanism of a water flow velocity meter, in particular to a speed measuring mechanism for indirectly measuring water flow velocity through water impulse.

Background

The flow rate is the most basic parameter for accurately measuring the water quantity. The flow rate meter has various styles according to specific application fields, but a method commonly used for measuring the bucket channels and the rough channels in farmland irrigation is a gate opening metering and channel water level flow relation line metering method. In the actual work, the two methods have larger errors because of no data for monitoring the water flow rate in real time, and no good speed measuring mechanism for monitoring the water flow rate in real time under the condition is available at present.

Disclosure of Invention

The utility model aims to provide a speed measuring mechanism of a water impulse flow velocity meter, which can adapt to water flows with different sediment contents (different watercourses), can effectively avoid grass wadding winding in water, has accurate speed measurement, is convenient to use and convenient to maintain, and can achieve the purpose of accurately measuring water quantity.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a speed measuring mechanism of water impulse flow velocity meter, includes the support be equipped with the pivot on the support, the pivot links to each other perpendicularly with the connecting rod, and the one end of connecting rod links to each other with a hollow spheroid the spheroidal bottom is equipped with the inlet port, is equipped with the bleeder vent on the spheroid, inlet port and bleeder vent all with spheroidal inner chamber is linked together still be equipped with the encoder on the support, the encoder will the rotation angle code and the output of pivot.

Preferably, the support comprises a first support and a second support, the tops of the first support and the second support are connected through a cross beam, two ends of the rotating shaft are respectively arranged on the first support and the second support in a rotating mode, the connecting rod is connected to the rotating shaft between the first support and the second support, and the encoder is arranged on the first support or the second support.

Further preferably, the encoder is an optoelectronic encoder or a magnetic encoder.

Preferably, the encoder is a magnetic encoder, and the magnetic encoder comprises a radial magnet arranged at one end of the rotating shaft, a magnetic encoding chip arranged opposite to the radial magnet, and a signal processing circuit.

Further preferably, the magnetic encoding chip is an AS5600 magnetic encoding chip, the signal processing circuit is an MSP430F123 single-chip microcomputer circuit, and the MSP430F123 single-chip microcomputer circuit uploads the angle data encoded by the AS5600 magnetic encoding chip to the remote terminal unit.

Preferably, the sphere is a stainless steel sphere, the outer diameter of the sphere is 70-90 mm, the wall thickness of the sphere is 0.5-2 mm, the diameter of the water inlet hole is 8-12 mm, the diameter of the air vent is 4-8 mm, and the length of the connecting rod from the rotating shaft to the top of the sphere is 160-190 mm.

Preferably, the connecting rod and the spherical body are covered with a conical angle bead, the top of the conical angle bead is sleeved outside the connecting rod, the bottom of the conical angle bead is attached to the surface of the spherical body, and the air holes are arranged outside the edge of the conical angle bead.

Preferably, a level gauge is arranged on the bracket.

In the technical scheme, the speed measuring mechanism is horizontally arranged above the water surface of the canal, so that all or part of the ball body enters the water body, the water body enters the inner cavity of the ball body through the water inlet hole on the ball body, natural balance weight is realized on the ball body through the measured water body, the influence of the dead weight of the ball body on the speed measurement can be reduced to the minimum no matter how much sediment is contained in the water body, namely, if the ball body is sealed or balanced, the dead weight of the ball body is difficult to adapt to the stability under different sediment contents (namely, different water densities) and different flow rates, the condition of floating (small balance weight) or falling (large balance weight) can be generated at the moment, the ball body is possibly not deflected when the flow rate is small and the balance weight is large, or the deflection angles are different when the flow rate is the same. The shape of the sphere can effectively avoid the winding of the aquatic weed leaf strips or the silk flocs, and the conical corner protector at the top can effectively prevent the grass flocs from winding at the joint of the connecting rod and the sphere (namely, no dead angle is reserved). The testing mechanism of the flow velocity meter drives the ball body and the connecting rod to deflect by utilizing the water impact force, the deflection angle can be detected by the magnetic encoder, and the deflection angle has one-to-one correspondence with the water flow velocity, so that the water flow velocity can be accurately measured. The device has low cost, is suitable for being installed on the canal to measure the speed of the water flow of the irrigation water, is not influenced by water bodies with different densities, can monitor in real time, measures the speed accurately, and is convenient to apply and popularize.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a partial exploded perspective view of the present utility model;

FIG. 3 is a schematic view of another angle structure of the present utility model.

Detailed Description

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 3, the speed measuring mechanism of the water impact flow rate meter is provided with a bracket 1, wherein the bracket 1 comprises a first support 101 and a second support 102, and the first support 101 and the second support 102 are connected at the top through a cross beam 103. In one embodiment, the first support 101 and the second support 102 are cylindrical and are integrally formed with the cross beam 103. Bearings are arranged in the first support 101 and the second support 102, and two ends of the rotating shaft 2 are rotatably arranged on the bearings on two sides. A connecting rod 3 is vertically and fixedly connected to the rotating shaft 2 at the middle part of the first support 101 and the second support 102, and the connecting rod 3 is connected with the hollow sphere 4. In one embodiment, the shaft 2 is fixedly and vertically provided with a sleeve 201, the sleeve 201 is provided with a screw hole 202, the upper end of the connecting rod 3 is inserted into the sleeve 201, and then the connecting rod 3 is screwed into the screw hole 202 and fixed by a screw, so that the connecting rod 3 and the shaft 2 are fixed together. The sphere 4 is a stainless steel hollow sphere, a water inlet hole 5 is formed in the bottom of the sphere, an air hole 6 is formed in the upper portion of the sphere 4, the sphere 4 is fully or partially soaked in water flow during flow rate measurement, water enters the inner cavity of the sphere 4 from the water inlet hole 5, and gas in the sphere 4 is discharged from the air hole 6 along with the water entering the inner cavity. The automatic counterweight to the sphere 4 is realized after water enters the inner cavity, no matter how much sediment is contained in the water in irrigation, the acting force of the sphere 4 to the rotating shaft 2 through the connecting rod 3 is consistent, and the rotating angle of the rotating shaft driven by the connecting rod in the same flow rate water body due to different falling or jacking forces of the sphere 4 to the rotating shaft in water bodies with different densities like a closed sphere is avoided. The bracket 1 is provided with the encoder 7, the encoder 7 encodes the rotation angle of the rotating shaft 2 into a digital signal and outputs the digital signal, and because different rotation angles of the rotating shaft 2 correspond to different water flow rates (the corresponding relation between the angle and the water flow rate needs to be measured in advance), the digital signal output by the encoder 7 can be converted into the corresponding water flow rate after being received by the host.

The encoder 7 can adopt a photoelectric encoder or a magnetic encoder, and generates corresponding photoelectric signals or magnetic signals according to different rotation angles when the rotating shaft rotates, and the photoelectric signals or the magnetic signals are converted into digital quantities by the receiving chip. In one embodiment an absolute value magnetic encoder is used, i.e. a radial magnet 8 is provided at one end of the spindle 2, and a magnetic encoder and signal processing circuitry are provided opposite the radial magnet 8. For example, the magnetic encoding chip may be a magnetic encoding chip with a model AS5600, the signal processing circuit may be an MSP430F123 single-chip circuit and connected to the power supply through the cable 11, the MSP430F123 single-chip circuit uploads the angle data of the rotation of the radial magnet encoded by the AS5600 magnetic encoding chip to the remote terminal unit, and the remote terminal unit gives the flow velocity data according to the corresponding relationship between the angle and the flow velocity.

In the use process, float aquatic weed, branch, silk batting thing etc. in the water of flow rate that awaits measuring often, when meeting spheroid 4, then along with connecting rod 3 drive pivot 2 rotatory and make spheroid 4 lift up and pass smoothly, and can not twine on spheroid 4 and influence the velocity of flow survey. However, these grass batts sometimes hang around the junction of the ball 4 and the link 3. In order to avoid dead angle pocket hanging formed at the connecting position, a conical corner protector 9 is sleeved on the connecting rod 3, the top end of the conical corner protector 9 is sleeved on the connecting rod 3, a round opening at the bottom is tightly attached to the top of the sphere 4, and after the grass batting is hung on the pocket, the grass batting can slide onto the sphere 4 along the gradient of the conical corner protector 9 and slide down again, so that the grass batting is prevented from being hung on the pocket. The ventilation holes 6 are arranged at the outer edge of the conical corner protector 9.

In order to ensure levelness, a level gauge 104 may be inserted laterally outside the second support 102 to see if the support 1 is level, by arranging the cross beam 103 of the support 1 upwards and horizontally when measuring the flow rate.

The speed measuring mechanism can be designed into corresponding dimensions according to actual needs, different deflection angles of the rotating shaft correspond to specific flow rates when the flow rates are measured after the dimensions are determined, and the actual flow rates of corresponding water bodies to be measured can be obtained according to the measured angles after the corresponding relations between the angles and the flow rates are measured. For example, in one embodiment, the sphere 4 is a stainless steel sphere, the outer diameter of the sphere 4 is 70-90 mm, the wall thickness of the sphere 4 is 0.5-2 mm, the diameter of the water inlet 5 is 8-12 mm, the diameter of the air vent 6 is 4-8 mm, and the length of the connecting rod 3 from the rotating shaft 2 to the top of the sphere 4 is 160-190 mm.

When the speed measuring mechanism of the water impact flow velocity meter is used, the bracket 1 is horizontally arranged above the water surface of the water body in the ditch, the ball 4 is fully or partially immersed into the water body, water flows into the inner cavity of the ball 4, and the impact force of the water flow acts on the outer surface of the ball 4 to drive the ball 4 to move and drive the rotating shaft 2 to rotate through the connecting rod 3. The rotation angle of the shaft 2 is captured by the encoder and converted into a digital signal, which is then uploaded to the remote terminal unit via the monolithic circuit, and then converted into a flow rate according to a pre-measured relationship between the angle and the flow rate.

The present embodiments are merely illustrative of the present utility model and are not limited thereto, and the technical solution without substantial transformation is still within the scope of protection under the present utility model.

Claims (8)

1. The utility model provides a speed measuring mechanism of water impact velocity of flow appearance, includes the support, its characterized in that be equipped with the pivot on the support, the pivot links to each other perpendicularly with the connecting rod, and the one end of connecting rod links to each other with a hollow spheroid the spheroidal bottom is equipped with the inlet port, is equipped with the bleeder vent on the spheroid, inlet port and bleeder vent all with spheroidal inner chamber is linked together still be equipped with the encoder on the support, the encoder will the rotation angle code and the output of pivot.

2. The speed measuring mechanism of the water impact flow velocity meter according to claim 1, wherein the bracket comprises a first support and a second support, the tops of the first support and the second support are connected through a cross beam, two ends of the rotating shaft are respectively rotatably arranged on the first support and the second support, the connecting rod is connected on the rotating shaft between the first support and the second support, and the encoder is arranged on the first support or the second support.

3. A water impact flow rate meter speed measuring mechanism as claimed in claim 1 or claim 2 wherein the encoder is an electro-optical encoder or a magnetic encoder.

4. A water impact flow velocity measuring mechanism according to claim 3, wherein the encoder is a magnetic encoder, and the magnetic encoder comprises a radial magnet arranged at one end of the rotating shaft, a magnetic encoding chip arranged opposite to the radial magnet, and a signal processing circuit.

5. The water impact flow rate meter speed measuring mechanism AS set forth in claim 4, wherein the magnetic encoding chip is an AS5600 magnetic encoding chip, the signal processing circuit is an MSP430F123 single-chip microcomputer circuit, and the MSP430F123 single-chip microcomputer circuit uploads the angle data encoded by the AS5600 magnetic encoding chip to the remote terminal unit.

6. The water impact flow velocity measuring mechanism according to claim 1, wherein the sphere is a stainless steel sphere, the outer diameter of the sphere is 70-90 mm, the wall thickness of the sphere is 0.5-2 mm, the diameter of the water inlet hole is 8-12 mm, the diameter of the air vent is 4-8 mm, and the length of the connecting rod from the rotating shaft to the top of the sphere is 160-190 mm.

7. The speed measuring mechanism of the water impact flow velocity meter according to claim 1, wherein a conical angle bead is covered at the joint of the connecting rod and the sphere, the top of the conical angle bead is sleeved outside the connecting rod, the bottom of the conical angle bead is attached to the surface of the sphere, and the air holes are arranged outside the edge of the conical angle bead.

8. A water impact flow rate meter speed measuring mechanism as claimed in claim 1, wherein a level meter is provided on the support.