Sliding line multi-channel power supply structure and multi-channel power supply method for current meter

Abstract

The present invention discloses a flow meter sliding line multi-pass power supply structure and a multi-pass power supply method thereof, which includes a frame, an insulating substrate and a plurality of groups of push-type brush power supply components, the plurality of groups of push-type brush power supply components are arranged on the insulating substrate at intervals, and the push-type brush power supply components include an upper power plate, a connecting frame, a support arm, a height adjustment component, an elastic component and a brush device. By having a plurality of groups of push-type brush power supply components contact the power supply sliding line at the same time, the connection between the device and the external circuit is multiple-protected, and the situation of poor contact with the wire due to the shaking of the carbon brush is effectively solved; during use, through the dynamic cooperation of the elastic component and the support arm, on the basis of ensuring the electrical contact effect of the brush device, the working stability and flexibility of the entire device can also be improved. When there is a deviation in the cooperation between the flow meter device and the power supply sliding line, the damage of the graphite brush can be prevented and the service life can be extended. In addition, the overall structure is compact and easy to implement, which is conducive to wide promotion and application.

Description

Technical Field

[0001] The invention relates to the technical field of water conservancy and hydrological testing, and in particular to a current meter sliding line type multi-channel power supply structure and a multi-channel power supply method. Background Art

[0002] my country's water resources are complex. In hydrological information, water flow velocity is an important hydrological intelligence, so accurate measurement of flow velocity is crucial to the accuracy of hydrological information. Improving the performance indicators of the flow velocity calibration system is an important guarantee for the accuracy of the use of flow meters and water metering instruments. Due to the different environments of hydrological information, the service life of the flow meter is affected, so the flow meter needs to be regularly calibrated and maintained to re-determine its performance. Flow velocity is usually measured using a special flow meter, which is widely used in rivers, lakes, seas and other fields to measure water flow velocity.

[0003] According to the requirements of the general technical conditions of hydrological instruments, the accuracy of the current meter needs to be calibrated, that is, the current meter calibration vehicle is used to calibrate the current meter to ensure that the operation of the current meter can meet the requirements of national standards. Therefore, before using the current meter or after a certain period of use (usually one year), the various parameters of the current meter need to be re-evaluated in accordance with the standard "SL / T150-95 "Multi-pass power supply method for rotor current meter in linear open flume"" of the Ministry of Water Resources. The calibration principle of the current meter: set up two straight tracks on both sides of a rectangular water tank, install the calibration vehicle on the track, and make it move back and forth. The current meter is fixed on the calibration vehicle and placed in the water. The water depth is 0.6m to 1.0m, and the horizontal axis of the instrument is parallel to the calibration tank track. The deviation is no more than 3°. During measurement, the water injected into the water tank is stationary. When the test vehicle reciprocates at a constant speed (between 0.01 and 6.0 m / s) on the tracks on both sides of the water tank, the test vehicle is stationary relative to the flow meter, and the water in the water tank flows at the speed of the vehicle. Under the condition that the speed of the test vehicle has been determined, the number of revolutions of the flow meter rotor and the corresponding time at different speeds are recorded, and the rotation rate of the flow meter when the test vehicle drives the flow meter to move is measured. Then, through a series of corresponding formulas, the measured rotation rate is converted into the flow velocity of the flow meter and compared with the known vehicle speed. Based on the comparison results, the error of the flow meter during detection is obtained, and the accuracy of the flow meter during operation is evaluated.

[0004] The sliding line power supply device is an electrical device that the electric vehicle uses to obtain power from the power grid and is installed on the vehicle. However, the flow meter calibration vehicle usually needs to move back and forth frequently to ensure the accuracy of the flow meter. It is greatly affected by changes in external working conditions and will have a large deviation relative to the power supply line during operation, which can easily cause poor brush connection or damage to the wires. Summary of the invention

[0005] In view of the above-mentioned deficiencies, one of the objects of the present invention is to provide a sliding-line multi-pass power supply structure for a flow meter with an ingenious and reasonable structural design and good contact stability.

[0006] A second object of the present invention is to provide a sliding-line multi-pass power supply method for a flow meter.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0008] A current meter sliding line multi-pass power supply structure, comprising a frame, an insulating substrate and a plurality of push-type brush power supply assemblies, wherein the insulating substrate is arranged on the frame, and the plurality of push-type brush power supply assemblies are arranged on the insulating substrate in an interval arrangement, and a mounting frame for setting a current meter test vehicle is provided on the top of the frame, and the push-type brush power supply assembly comprises an upper power plate, a connecting frame, a support arm, a height adjustment component, an elastic component and a brush device, wherein the connecting frame is arranged on the upper power plate, the upper end of the height adjustment component is fixed on the connecting frame, and the lower end extends vertically downward, the upper ends of the two support arms are symmetrically located on both sides of the height adjustment component, and the upper ends of the two support arms are hinged on the connecting frame, and the lower ends of the two support arms extend obliquely outward and are hinged to the brush devices corresponding thereto, and one end of the elastic component is connected to the height adjustment component, and the other end is connected to the lower part of the support arm or the brush device.

[0009] As an improvement of the present invention, the frame includes a vertical frame, an upper horizontal frame horizontally arranged at the upper end of the vertical frame, and a lower horizontal frame horizontally arranged at the lower end of the vertical frame.

[0010] As an improvement of the present invention, the height adjustment component includes a stud, an upper nut, a lower nut and a locking nut. A screw hole matching the stud is provided at the center position of the upper electrical plate. The upper end of the stud is screwed into the screw hole for fixation, and the upper nut, lower nut and locking nut are screwed on the stud in sequence.

[0011] As an improvement of the present invention, the elastic component is a tension spring, one end of which is hooked on the stud and is located between the upper nut and the lower nut.

[0012] As an improvement of the present invention, a support gasket is provided between one end of the tension spring and the upper nut; a support gasket is provided between one end of the tension spring and the lower nut.

[0013] As an improvement of the present invention, a hook hole or a bolt is provided on the lower part of the support arm for convenient connection with the connecting component.

[0014] As an improvement of the present invention, the brush device includes a mounting seat, a brush holder, a brush spring clip and a graphite brush. A hinge hole for mounting the support arm is provided at the center of the mounting seat. The two brush holders are symmetrically arranged on both sides of the mounting seat through a rotating shaft. The upper end of the graphite brush is located in the mounting cavity of the brush holder. The brush spring clip is arranged on the brush holder and is provided with a spring that presses against the upper end surface of the graphite brush. The connecting wire on the graphite brush is connected to the upper electric plate.

[0015] As an improvement of the present invention, the power-on plate is a copper plate.

[0016] As an improvement of the present invention, the insulating substrate is insulating bakelite.

[0017] A sliding-line multi-channel power supply method for a flow meter comprises the following steps:

[0018] Multiple groups of push-type brush power supply components that are in contact with the power supply sliding wire at the same time are arranged at intervals;

[0019] The lower ends of the two arms in the push-type brush power supply assembly can be relatively closed or opened, and the brush device in the push-type brush power supply assembly can rotate with the hinge shaft on which the arms are hinged;

[0020] The two arms are pulled together by the elastic component to keep the brush device pressed stably on the power supply slide wire;

[0021] The tension of the elastic component is adjusted by adjusting the height of the elastic component on the height adjustment component.

[0022] The beneficial effects of the present invention are as follows: the design scheme of the present invention is ingenious and reasonable. Through multiple groups of push-type brush power supply components contacting the power supply slide line at the same time, the connection between the equipment and the external circuit is multiple-protected, and the problem of poor contact with the wires due to the shaking of the carbon brush is effectively solved; during use, through the dynamic coordination of the elastic component and the support arm, on the basis of ensuring the electrical contact effect of the brush device, the working stability and flexibility of the entire equipment can be improved. When there is a deviation in the coordination between the flow meter equipment and the power supply slide line, the damage of the graphite brush can be prevented and the service life can be extended. In addition, the overall structure is compact and easy to implement, which is conducive to wide promotion and application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the decomposition structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the push-type brush power supply assembly in the present invention. DETAILED DESCRIPTION

[0026] Example: See Figure 1 , Figure 2 and Figure 3 The present embodiment provides a flow meter sliding line multi-pass power supply structure, which includes a frame 1, an insulating substrate 2 and a plurality of push-type brush power supply components 3. The upper power plate is preferably a copper plate with good conductive effect. The insulating substrate 2 is an insulating bakelite, which has high mechanical strength, good insulation, heat resistance and corrosion resistance. Specifically, the frame 1 includes a vertical frame 11, an upper horizontal frame 12 horizontally arranged at the upper end of the vertical frame 11, and a lower horizontal frame 13 horizontally arranged at the lower end of the vertical frame 11. The top surface of the upper horizontal frame 12 of the frame 1 is provided with a mounting frame 14 for setting a flow meter test vehicle.

[0027] The insulating substrate 2 is arranged on the bottom surface of the upper horizontal frame 12 of the frame 1, and multiple groups of push-type brush power supply components 3 are arranged at intervals on the insulating substrate 2. In this embodiment, the number of the push-type brush power supply components 3 is four groups. In other embodiments, the number of the push-type brush power supply components 3 can also be three groups or five groups. By making multiple groups of push-type brush power supply components 3 contact with the power supply sliding wire at the same time, the connection between the device and the external circuit is multi-protected, effectively solving the problem of poor contact with the wire due to the shaking of the carbon brush.

[0028] See also Figure 3 The push-type brush power supply assembly 3 includes an upper power board 31, a connecting frame 32, a support arm 33, a height adjustment component 34, an elastic component 35 and a brush device 36. The connecting frame 32 is arranged on the upper power board 31. The upper end of the height adjustment component 34 is fixed on the connecting frame 32, and the lower end extends vertically downward. The upper ends of the two support arms 33 are symmetrically located on both sides of the height adjustment component 34, and the upper ends of the two support arms 33 are hinged on the connecting frame 32 through a pin 37. The lower ends of the two support arms 33 extend outward obliquely and are hinged to the brush device 36 corresponding thereto. One end of the elastic component 35 is connected to the height adjustment component 34, and the other end is connected to the lower part of the support arm 33. Specifically, a hook hole or a bolt is provided on the lower part of the support arm 33 for convenient connection with the connecting component. In other embodiments, the hook hole or the bolt can also be arranged on the brush device 36, so that the other end of the elastic component 35 is connected to the brush device 36.

[0029] The height adjustment component 34 includes a stud, an upper nut, a lower nut and a locking nut. A screw hole matching the stud is provided at the center of the upper electrical board 31. The upper end of the stud is screwed into the screw hole for fixing. The upper nut, the lower nut and the locking nut are screwed onto the stud in sequence. The tension of the elastic component 35 is adjusted accordingly by adjusting the positions of the upper nut and the lower nut upward or downward, and the degree of closing or opening of the lower ends of the two arms 33 is adjusted accordingly. In this embodiment, the elastic component 35 is a tension spring, one end of which is hooked on the stud and is located between the upper nut and the lower nut. A support gasket is provided between one end of the tension spring and the upper nut; a support gasket is provided between one end of the tension spring and the lower nut. The provision of a support gasket can further enhance the matching effect. In other embodiments, the elastic component 35 can also be a wavy spring.

[0030] The brush device 36 includes a mounting seat 361, a brush holder 362, a brush spring clip 363 and a graphite brush 364. A hinge hole for mounting the support arm 33 is provided at the center of the mounting seat 361. Two brush holders 362 are symmetrically arranged on both sides of the mounting seat 361 through a rotating shaft. The upper end of the graphite brush 364 is located in the mounting cavity of the brush holder 362. Both ends of the brush spring clip 363 are arranged on the brush holder 362 through wedge-shaped barbed feet. The brush spring clip 363 is provided with a spring 365 that presses against the upper end surface of the graphite brush 364. The connecting wire on the graphite brush 364 is connected to the upper electric board 31. The graphite brush 364 is preferably made of copper-containing graphite to increase electrical conductivity, has good electrical conductivity, thermal conductivity and lubrication properties, and has a certain mechanical strength.

[0031] A method for supplying power to a current meter with a sliding line and multiple channels, comprising the following steps: a plurality of groups of push-type brush power supply assemblies 3 that are in contact with a power supply sliding line are arranged at intervals; the lower ends of two arms 33 in the push-type brush power supply assembly 3 can be relatively closed or opened, and a brush device 36 in the push-type brush power supply assembly 3 can rotate about a hinge shaft on which the arms 33 are hinged; the two arms 33 are pulled together by an elastic component 35 to keep the brush device 36 stably pressed on the power supply sliding line; and the tension of the elastic component 35 is adjusted by adjusting the height of the elastic component 35 on the height adjustment component 34.

[0032] When working, the present invention is installed as a whole on the flow meter test vehicle through the mounting frame, so that the graphite brush 364 is in contact with the power supply slide line at the lower position. During the driving and sliding process, the elastic component 35 pulls the two arms 33 to close so that the graphite brush 364 is always stably pressed on the power supply slide line. On the basis of ensuring the electrical contact effect of the brush device 36, the working stability and flexibility of the entire equipment can be improved. When the flow meter equipment and the power supply slide line have deviations, the damage of the graphite brush 364 can be prevented and the service life can be extended; when the force of the graphite brush 364 pressing on the power supply slide line is too large, the tension of the elastic component 35 can be reduced by lowering the position of the upper nut and the lower nut. When the force of the graphite brush 364 pressing on the power supply slide line is too small, the position of the upper nut and the lower nut is correspondingly adjusted to increase the tension of the elastic component 35, ensuring the stability of the electrical contact and good working stability.

[0033] According to the disclosure and teaching of the above specification, technicians in the field to which the present invention belongs can also change and modify the above implementation. Therefore, the present invention is not limited to the specific implementations disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation to the present invention. As described in the above embodiments of the present invention, other structures and power supply methods obtained by using the same or similar structures and methods are all within the protection scope of the present invention.

Claims

1. A sliding-wire multi-pass power supply structure for a flow meter, characterized in that: It includes a frame, an insulating substrate and multiple groups of push-type brush power supply components, the insulating substrate is arranged on the frame, and the multiple groups of push-type brush power supply components are arranged on the insulating substrate at intervals. The top of the frame is provided with a mounting frame for setting a flow meter test vehicle. The push-type brush power supply component includes an upper power board, a connecting frame, a support arm, a height adjustment component, an elastic component and a brush device. The connecting frame is arranged on the upper power board, the upper end of the height adjustment component is fixed on the connecting frame, and the lower end extends vertically downward. The upper ends of the two support arms are symmetrically located on both sides of the height adjustment component, and the upper ends of the two support arms are hinged on the connecting frame. The lower ends of the two support arms extend outward obliquely and are hinged to the brush devices corresponding thereto. One end of the elastic component is connected to the height adjustment component, and the other end is connected to the lower part of the support arm or the brush device.

2. The sliding-line multi-pass power supply structure of the current meter according to claim 1 is characterized in that: The frame comprises a vertical frame, an upper horizontal frame horizontally arranged at the upper end of the vertical frame, and a lower horizontal frame horizontally arranged at the lower end of the vertical frame.

3. The sliding-line multi-pass power supply structure of the current meter according to claim 1 is characterized in that: The height adjustment component includes a stud, an upper nut, a lower nut and a locking nut. A screw hole matching the stud is provided at the center position of the upper electrical plate. The upper end of the stud is screwed into the screw hole for fixation, and the upper nut, lower nut and locking nut are screwed on the stud in sequence.

4. The sliding-line multi-pass power supply structure of the current meter according to claim 3 is characterized in that: The elastic component is a tension spring, one end of which is hooked on the stud and is located between the upper nut and the lower nut.

5. The sliding-line multi-pass power supply structure of the current meter according to claim 4 is characterized in that: A supporting gasket is arranged between one end of the tension spring and the upper nut; and a supporting gasket is arranged between one end of the tension spring and the lower nut.

6. The sliding-line multi-pass power supply structure of a velocity meter according to claim 1, characterized in that: The lower part of the support arm is provided with a hook hole or a bolt for convenient connection with the connecting component.

7. The sliding-line multi-pass power supply structure of a current meter according to claim 1, characterized in that: The brush device includes a mounting seat, a brush holder, a brush spring clip and a graphite brush. A hinge hole for mounting the support arm is provided at the center of the mounting seat. Two brush holders are symmetrically arranged on both sides of the mounting seat through a rotating shaft. The upper end of the graphite brush is located in the mounting cavity of the brush holder. The brush spring clip is arranged on the brush holder and is provided with a spring that presses against the upper end surface of the graphite brush. The connecting wire on the graphite brush is connected to the upper electric plate.

8. The sliding-line multi-pass power supply structure of a velocity meter according to claim 1, characterized in that: The power-on plate is a copper plate.

9. The sliding-line multi-pass power supply structure of a current meter according to claim 1, characterized in that: The insulating substrate is insulating bakelite.

10. A sliding line multi-pass power supply method for a current meter, characterized in that: It includes the following steps: Multiple groups of push-type brush power supply components that are in contact with the power supply sliding wire at the same time are arranged at intervals; The lower ends of the two arms in the push-type brush power supply assembly can be relatively closed or opened, and the brush device in the push-type brush power supply assembly can rotate with the hinge shaft on which the arms are hinged; The two arms are pulled together by the elastic component to keep the brush device pressed stably on the power supply slide wire; The tension of the elastic component is adjusted by adjusting the height of the elastic component on the height adjustment component.

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