CN120846435A - Intelligent channel flow meter and measurement method thereof - Google Patents
Intelligent channel flow meter and measurement method thereofInfo
- Publication number
- CN120846435A CN120846435A CN202511096281.XA CN202511096281A CN120846435A CN 120846435 A CN120846435 A CN 120846435A CN 202511096281 A CN202511096281 A CN 202511096281A CN 120846435 A CN120846435 A CN 120846435A
- Authority
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- China
- Prior art keywords
- transmission
- channel
- mounting plate
- reciprocating screw
- bracket
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/662—Constructional details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/663—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by measuring Doppler frequency shift
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses an intelligent channel flowmeter and a measuring method thereof, wherein the intelligent channel flowmeter comprises a radar measuring unit, a data acquisition and processing unit and a support, a reciprocating screw rod is rotatably connected to the support, a first sliding block is matched with the reciprocating screw rod, the first sliding block is fixedly connected with the radar measuring unit, the flowmeter further comprises a power supply unit, the power supply unit comprises a mounting plate, a water turbine, a generator and a storage battery, the mounting plate is connected with the support, the water turbine is rotatably connected to the mounting plate, the axis position of the water turbine is coaxially connected with an input shaft of the generator through a rotating shaft, the generator is arranged on the mounting plate, the storage battery is arranged on the support, the storage battery is electrically connected with the generator, the storage battery is electrically connected with the radar measuring unit and the storage battery is electrically connected with the data acquisition and processing unit, and a transmission component is arranged between the rotating shaft and the reciprocating screw rod. The invention aims to solve the technical problems of high cost, poor measurement range and low energy utilization rate.
Description
Technical Field
The invention belongs to the technical field of flow measurement, and particularly relates to an intelligent channel flowmeter and a measurement method thereof.
Background
The radar flowmeter has the remarkable advantages of non-contact measurement, high precision, adaptation to complex environments and the like, and becomes ideal monitoring equipment in the field of channel flow measurement.
There is currently an intelligent channel radar flowmeter comprising a radar measurement unit, a data acquisition processing unit, and a bracket for mounting the radar measurement unit and the data acquisition processing unit. Wherein, radar measurement unit includes radar velocity of flow sensor and radar water level sensor. The radar flow rate sensor works in that radar waves are emitted to the water surface, reflected signals are received, the water flow rate is calculated through the Doppler effect, the radar water level sensor emits radar waves, the time difference of the reflected waves is measured, the distance from the water surface to the sensor is calculated, and water level data are obtained. The data acquisition processing unit is composed of a data acquisition module, a processing module and a communication module. The data acquisition module is responsible for collecting flow speed and water level data acquired by the radar sensor, the processing module is responsible for calculating instantaneous flow and accumulated flow by combining the preset cross section shape and size of the channel according to the acquired flow speed and water level data and applying a flow calculation formula, and the communication module is responsible for transmitting the acquired data to a remote monitoring center or an upper computer system.
However, the intelligent channel radar flowmeter still has the following drawbacks:
firstly, in order to improve the accuracy of detection, a plurality of radar measurement units are generally added on the support along the width direction of the channel. But this would add significantly to the cost of the equipment. In addition, even if a plurality of radar measuring units are additionally arranged, only a plurality of fixed positions in the width direction of the channel can be measured, dynamic measurement of the flow in the width direction of the channel can not be realized, and certain limitation still exists in the measuring range.
Secondly, the kinetic energy generated by the water flow cannot be fully utilized, so that the energy utilization rate is low, and the energy utilization is required to be further optimized.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an intelligent channel flowmeter and a measuring method thereof, which are used for solving the technical problems that equipment use cost is high, dynamic measurement of flow in the channel width direction cannot be realized, the measuring range is not large, and the energy utilization rate is low due to the fact that kinetic energy generated by water flow cannot be fully utilized due to the fact that a plurality of radar measuring units are additionally arranged on a support along the channel width direction.
One of the invention:
The intelligent channel flowmeter comprises a radar measuring unit, a data acquisition processing unit and a bracket for mounting the radar measuring unit and the data acquisition processing unit, wherein the bracket is rotationally connected with a reciprocating screw rod which is horizontally arranged along the width direction of a channel, the reciprocating screw rod is positioned above the channel, a first sliding block is cooperatively arranged on the reciprocating screw rod, the first sliding block can move back and forth along the reciprocating screw rod by rotating the reciprocating screw rod, and the first sliding block is fixedly connected with the radar measuring unit;
The flowmeter further comprises a power supply unit, the power supply unit comprises a mounting plate, a water turbine, a generator and a storage battery, the mounting plate is connected with the support, the water turbine is connected to the mounting plate in a rotating mode, the water turbine is vertically arranged on one side of the length direction of the channel, the lower side of the water turbine is located in the liquid level of the channel, the axis of the water turbine is coaxially connected with the input shaft of the generator through a rotating shaft, the generator is mounted on the mounting plate, the storage battery is mounted on the support, the storage battery is electrically connected with the generator, and the storage battery is electrically connected with the radar measurement unit and the data acquisition and processing unit;
a transmission assembly is arranged between the rotating shaft and the reciprocating screw rod, and the reciprocating screw rod can be rotated in the process of rotating the water turbine driven by water flow through the transmission assembly.
Compared with the prior art, the invention has the advantages that:
(1) According to the intelligent channel flowmeter provided by the invention, the first sliding block and the radar measuring unit are driven to move in the channel width direction through the rotation of the reciprocating screw rod, so that the measurement of different positions in the channel width direction is realized. Compared with the prior art, a plurality of radar measuring units are not required to be additionally arranged on the support along the width direction of the channel, so that the equipment use cost is effectively reduced. Meanwhile, the radar measurement unit can move and measure simultaneously in the reciprocating movement process, so that dynamic measurement of the channel width direction is realized, and the measurement comprehensiveness is improved.
(2) The intelligent channel flowmeter provided by the invention adopts the measuring mode, so that the problem of inaccurate overall flow calculation caused by local measuring errors is effectively avoided. For example, in the case where the flow velocity distribution in the channel width direction is uneven, the movement measurement can acquire more comprehensive flow velocity data, thereby improving the accuracy of the flow measurement.
(3) According to the intelligent channel flowmeter provided by the invention, the kinetic energy of water flow in the channel is utilized to drive the water turbine to rotate, so that the generator is driven to generate power, and power support is provided for the whole flowmeter, so that self-sufficiency of energy is realized, an external power supply is not needed, and the running cost is effectively reduced. In addition, the adoption of the water energy power generation belongs to a clean and renewable energy utilization mode, meets the environmental protection requirement, and reduces the dependence on the traditional energy.
(4) According to the intelligent channel flowmeter, in the rotation process of the water turbine, the rotation power of the water turbine is transmitted to the reciprocating screw rod through the transmission assembly, so that the function that the water flow drives the water turbine to rotate and drive the radar measuring unit to move is realized, the linkage control of the system is realized, and the automation degree of the system is improved.
Further, the transmission assembly comprises a first transmission wheel and a second transmission wheel, the first transmission wheel is coaxially and fixedly connected to the rotating shaft, and the first transmission wheel and the second transmission wheel are in transmission connection through a transmission piece;
The transmission assembly comprises a gear, a disc and an external gear which is in a fan shape, wherein the gear is coaxially and fixedly connected to the reciprocating screw rod, the disc is rotationally connected to the support, the second transmission wheel is coaxially and fixedly connected to the disc, the external gear is coaxially arranged on the disc, and the external gear can be meshed with the gear in the rotation process of the disc.
Further, the external gear is detachably connected to the disc, the external gear can slide along the circumferential direction of the disc, a plurality of external gear can be spliced together after sliding along the disc, and a first fixing piece for fixing the external gear on the disc after sliding is arranged on the external gear.
Further, the disc is of a hollow structure.
Further, the mounting plate is connected to the bracket in a sliding manner along the vertical direction, and an air bag is arranged below the mounting plate, so that the mounting plate can float above the liquid level of the channel through the air bag;
The support is provided with two adjusting wheel groups, the two adjusting wheel groups are symmetrically distributed about a connecting line between the axle center of the first driving wheel and the axle center of the second driving wheel, the adjusting wheel groups comprise adjusting wheels and elastic pieces, the adjusting wheels are connected on the support in a sliding way along the length direction of the channel, the elastic piece is arranged between the adjusting wheels and the support, the two adjusting wheels are located on the inner sides of the transmission piece, and under the action of the two elastic pieces, the two adjusting wheels are abutted against the transmission piece and are in transmission fit with the transmission piece.
Further, a cross rod is arranged on the support along the length direction of the channel, a strip-shaped sliding rail is arranged on the cross rod, the strip-shaped sliding rail is arranged along the length direction of the cross rod, two second sliding blocks are arranged on the strip-shaped sliding rail in a sliding mode, the two second sliding blocks can slide along the length direction of the cross rod, and the two adjusting wheels are respectively connected to the two second sliding blocks in a rotating mode;
The opposite ends of the two second sliding blocks are respectively connected with one end of the two elastic pieces, two third sliding blocks are arranged between the two elastic pieces, and the opposite ends of the two third sliding blocks are respectively connected with the opposite ends of the two elastic pieces;
the transmission rod is vertically arranged in the middle of the two third sliding blocks, the lower end of the transmission rod is fixedly connected with the mounting plate after extending vertically downwards, two diagonal rods are respectively arranged on two sides of the transmission rod, the lower ends of the two diagonal rods are obliquely arranged in the direction away from the transmission rod, and one opposite sides of the diagonal rods are respectively abutted to one opposite ends of the two third sliding blocks.
Further, two the diagonal bar upper ends all articulate with the transfer line top, be provided with the fourth slider along transfer line length direction sliding connection on the transfer line, be provided with two bracing pieces between fourth slider both sides and the two diagonal bars respectively, bracing piece one end articulates with the diagonal bar middle part, and the other end articulates with the fourth slider, be provided with the second mounting that is used for fixing the fourth slider on the transfer line on the fourth slider.
The second invention is that:
A method of measurement comprising the steps of:
Step one, completing the installation and fixation of a bracket, wherein an installation plate floats above the liquid level of a channel, and water flow can impact a water turbine to rotate;
step two, starting a radar measurement unit and a data acquisition and processing unit, wherein the water flow impacts the water turbine to rotate, and the reciprocating screw rod is enabled to rotate through the transmission assembly, so that the radar measurement unit is driven to move back and forth to realize dynamic measurement, and meanwhile, the rotation of the water turbine transmits mechanical energy to the generator to generate electricity and the storage battery stores electric energy;
And thirdly, collecting flow speed and water level data acquired by the radar sensor by the data acquisition processing unit, calculating instantaneous flow and accumulated flow by using a flow calculation formula according to the acquired flow speed and water level data and combining the preset cross section shape and size of the channel, and finally transmitting the processed data to a remote monitoring center or an upper computer system to realize dynamic monitoring.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a second embodiment of the present invention;
FIG. 3 is a schematic diagram of a third embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view of FIG. 3;
FIG. 5 is a schematic view of a disk portion in exploded view;
Fig. 6 is a schematic structural view of a driving lever portion.
Reference numerals:
The radar measuring unit 1, the data acquisition and processing unit 2, the bracket 3, the reciprocating screw rod 4, the first sliding block 5, the mounting plate 6, the hydraulic turbine 7, the generator 8, the rotating shaft 9, the first driving wheel 10, the second driving wheel 11, the driving part 12, the gear 13, the disc 14, the external gear 15, the first fixing part 16, the air bag 17, the adjusting wheel 18, the elastic part 19, the cross rod 20, the second sliding block 21, the third sliding block 22, the driving rod 23, the inclined rod 24, the supporting rod 25, the fourth sliding block 26 and the second fixing part 27.
Detailed Description
In view of the shortcomings in the prior art, the inventor of the present application has long studied and practiced in a large number of ways to propose the technical scheme of the present application. The technical scheme, implementation process and principle of the present application will be further explained with reference to the drawings and specific embodiments in the embodiments of the present application.
It should be noted that the embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention, and the described embodiments are only some embodiments of the present invention, not all embodiments. The invention is to cover alternatives, modifications, equivalents, and variations of the invention as may be included within the spirit, principles and scope of the invention as defined by the appended claims as would be apparent to one of ordinary skill in the art to which the invention pertains without inventive faculty.
In the description of the present application, the terms "first," "second," "third," and the like do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, is intended to mean that elements or items that are present in front of "comprising" or "comprising" are included in the word "comprising" or "comprising", and equivalents thereof, without excluding other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
In the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, when terminology is used in two-sided, outboard, up-down, etc., it is to be understood that this is for ease of understanding and description only, as it is contemplated that the structure may be oriented in other positions.
In the description of the present application, unless explicitly specified and limited otherwise, terms of art or science are used in a general sense as understood by those skilled in the art to which the present application pertains, and terms such as "mounted," "connected," and "connected" are to be construed broadly, and may be either fixed or removable or contradictory or integral, and the detailed meaning of the terms in the present application may be understood as specific to those skilled in the art.
One of the invention:
referring to fig. 1-6, the invention provides an intelligent channel flowmeter, which comprises a radar measuring unit 1, a data acquisition processing unit 2 and a bracket 3 for installing the radar measuring unit 1 and the data acquisition processing unit 2.
The bracket 3 provides mounting support for the radar measuring unit 1 and the data acquisition processing unit 2, ensures that the radar measuring unit and the data acquisition processing unit can be stably fixed above a channel, is generally made of a firm metal material, has certain strength and rigidity, and can bear the weight of each component and vibration and impact possibly generated in the running process.
The radar measurement unit 1 includes a radar flow rate sensor and a radar water level sensor. The radar flow rate sensor works in that radar waves are emitted to the water surface, reflected signals are received, the water flow rate is calculated through the Doppler effect, the radar water level sensor emits radar waves, the time difference of the reflected waves is measured, the distance from the water surface to the sensor is calculated, and water level data are obtained. The data acquisition processing unit 2 is composed of a data acquisition module, a processing module and a communication module. The data acquisition module is responsible for collecting flow speed and water level data acquired by the radar sensor, the processing module is responsible for calculating instantaneous flow and accumulated flow by combining the preset cross section shape and size of the channel according to the acquired flow speed and water level data and applying a flow calculation formula, and the communication module is responsible for transmitting the processed data to a remote monitoring center or an upper computer system.
The support 3 is rotationally connected with a reciprocating screw rod 4, the reciprocating screw rod 4 is horizontally arranged along the width direction of the channel, the reciprocating screw rod 4 is positioned above the channel, a first sliding block 5 is matched with the reciprocating screw rod 4, the first sliding block 5 can move back and forth along the reciprocating screw rod 4 by rotating the reciprocating screw rod 4, and the first sliding block 5 is fixedly connected with the radar measuring unit 1. The reciprocating screw rod 4 provides a track for the first sliding block 5 to horizontally move, and the first sliding block 5 is driven to move back and forth along the width direction of the channel through the rotation of the reciprocating screw rod, so that the radar measuring unit 1 can perform movement measurement within the width range of the channel. The first sliding block 5 is used as a component for connecting the radar measuring unit 1 and the reciprocating screw rod 4, and converts the rotation motion of the reciprocating screw rod 4 into the self linear reciprocating motion, so that the radar measuring unit 1 is driven to move in the width direction of the channel, and the movement measuring function is realized. The first sliding block 5 is internally provided with a structure matched with the threads of the reciprocating screw 4, when the reciprocating screw 4 rotates, the interaction force between the internal structure of the first sliding block 5 and the threads can enable the first sliding block 5 to move along the screw, and the first sliding block 5 is fixedly connected with the radar measuring unit 1, so that the radar measuring unit 1 can move along with the first sliding block 5
The flowmeter still includes power supply unit, and power supply unit includes mounting panel 6, hydraulic turbine 7, generator 8 and battery, and mounting panel 6 is connected with support 3, and hydraulic turbine 7 rotates to be connected on mounting panel 6, and hydraulic turbine 7 is vertical to be set up in channel length direction one side and hydraulic turbine 7 downside is located among the channel liquid level. The mounting plate 6 provides a mounting platform for the turbine 7 so that the turbine 7 is correctly positioned in the channel so as to be able to effectively be rotated by the flow of water. In other words, the blades of the turbine 7 should be oriented to the flow direction of the water in the channel, so that the blades can rotate under the impact of the water. The water turbine 7 is used as an energy conversion device to convert the kinetic energy of water flow in the channel into mechanical energy, and the water flow impacts the blades of the water turbine 7, so that the water turbine 7 rotates around the axis of the water turbine 7 to provide power for the subsequent power generation process.
The axis position of the water turbine 7 is coaxially connected with the input shaft of the generator 8 through a rotating shaft 9, and the generator 8 is arranged on the mounting plate 6. The mechanical energy transmitted by the water turbine 7 is converted into electric energy, and the rotary motion of the water turbine 7 is converted into electric energy to be output through the electromagnetic induction principle inside the generator 8, so that electric power support is provided for electric equipment of the whole flowmeter.
The storage battery is arranged on the bracket 3, the storage battery is electrically connected with the generator 8, and the storage battery is electrically connected with the radar measuring unit 1 and the storage battery is electrically connected with the data acquisition and processing unit 2. The storage battery stores the electric power generated by the generator 8 and provides stable power supply for the radar measurement unit 1, the data acquisition processing unit 2, and the like when necessary. The storage battery is connected with the generator 8 through electric connection, when the generator 8 generates electricity, electric energy can be stored in the storage battery through the charging circuit, and when equipment such as the radar measurement unit 1 and the data acquisition processing unit 2 needs to be powered, the storage battery releases the stored electric energy through the discharging circuit to supply power for the equipment.
A transmission assembly is arranged between the rotating shaft 9 and the reciprocating screw 4, and the reciprocating screw 4 can be rotated in the process of rotating the water turbine 7 by water flow driving through the transmission assembly. In the rotation process of the water turbine 7, the rotation power of the water turbine 7 is transmitted to the reciprocating screw rod 4, so that the reciprocating screw rod 4 rotates along with the rotation power, the function of driving the water turbine 7 to rotate and drive the radar measuring unit 1 to move is realized, and the effective utilization of energy and the linkage control of the system are realized.
In the implementation process of the scheme, the method comprises the following steps:
① . The first sliding block 5 and the radar measuring unit 1 are driven to move in the width direction of the channel by the rotation of the reciprocating screw rod 4, so that the measurement of different positions in the width direction of the channel is realized. Compared with the prior art, a plurality of radar measurement units 1 are not required to be additionally arranged on the support 3 along the width direction of the channel, so that the use cost of equipment is effectively reduced. Meanwhile, the radar measuring unit 1 can move and measure simultaneously in the reciprocating movement process, so that dynamic measurement of the channel width direction is realized, and the measurement comprehensiveness is improved.
② . The measuring mode adopted by the flowmeter effectively avoids the problem of inaccurate overall flow calculation caused by local measuring errors. For example, in the case where the flow velocity distribution in the channel width direction is uneven, the movement measurement can acquire more comprehensive flow velocity data, thereby improving the accuracy of the flow measurement.
③ . The kinetic energy of water flow in the channel is utilized to drive the water turbine 7 to rotate, so that the generator 8 is driven to generate power, power support is provided for the whole flowmeter, self-sufficiency of energy is realized, an external power supply is not needed, and the running cost is effectively reduced. In addition, the adoption of the water energy power generation belongs to a clean and renewable energy utilization mode, meets the environmental protection requirement, and reduces the dependence on the traditional energy.
④ . In the rotation process of the water turbine 7, the rotation power of the water turbine 7 is transmitted to the reciprocating screw rod 4 through the transmission component, the function that the water flow drives the water turbine 7 to rotate to drive the radar measuring unit 1 to move is achieved, the linkage control of the system is achieved, and the automation degree of the system is improved.
In the embodiment, the transmission assembly comprises a first transmission wheel 10 and a second transmission wheel 11, the first transmission wheel 10 is coaxially and fixedly connected to the rotating shaft 9, and as the first transmission wheel 10 is coaxially and fixedly connected with the rotating shaft 9, when the rotating shaft 9 rotates under the drive of the water turbine 7, the first transmission wheel 10 synchronously rotates along with the rotating shaft 9, and the rotating speed and the steering direction of the first transmission wheel are consistent with those of the rotating shaft 9. The first driving wheel 10 and the second driving wheel 11 are in transmission connection through a transmission piece 12, and when the first driving wheel 10 rotates, the second driving wheel 11 is driven to rotate through friction force or meshing force between the transmission piece 12 and the second driving wheel 11. The transmission member 12 may be a belt drive which relies on frictional forces or a chain drive which relies on meshing forces.
The transmission assembly comprises a gear 13, a disc 14 and an external gear 15 which is in a sector shape, the gear 13 is coaxially and fixedly connected to the reciprocating screw 4, and the gear 13 can rotate to drive the reciprocating screw 4 to rotate so as to realize reciprocating movement of the first sliding block 5. The disc 14 is rotatably connected to the bracket 3, and the disc 14 is connected to the bracket 3 through a rotational connector such as a bearing, and can freely rotate on the bracket 3. The second driving wheel 11 is coaxially and fixedly connected to the disc 14, and when the second driving wheel 11 rotates, the disc 14 is driven to rotate together.
The external gear rack 15 is coaxially arranged on the disc 14, and the external gear rack 15 can mesh with the gear 13 during rotation with the disc 14. The outer rack 15 has a tooth form matching that of the gear 13. When the disk 14 rotates, the external gear 15 rotates along with the disk 14, meshing force is generated between the external gear 15 and the gear 13 when the teeth of the external gear 15 are contacted with the teeth of the gear 13, so that the gear 13 starts to rotate, when the teeth of the external gear 15 are separated from the teeth of the gear 13, the gear 13 loses the meshing force, the gear 13 is changed from rotation to rest, and the external gear 15 is re-rotated when the external gear 15 is re-meshed with the gear 13. The intermittent rotation of the gear 13 is realized, and the intermittent rotation of the gear 13 causes the reciprocating screw 4 to intermittently rotate, so that the first sliding block 5 is stationary for a certain period of time after sliding for a certain distance, and the radar measuring unit 1 is still when stationary.
The scheme has the following beneficial effects:
The meshing and separation characteristics of the external rack 15 with the gear 13 determine that the radar measurement unit 1 has both a dynamic measurement phase moving with the reciprocating screw 4 and a fixed point observation phase stationary at a fixed point position. The advantages of the two measurement modes are fully exerted by combining dynamic measurement and fixed-point observation. The dynamic measurement can rapidly acquire the overall data trend in the width direction of the channel, the approximate change condition of the flow velocity and the liquid level is known, the fixed point observation can deeply and accurately measure the fixed point position, and more detailed and accurate data are acquired. The combination mode can master the flow condition of the channel more comprehensively and accurately, and provides more reliable basis for subsequent water resource management, scheduling and the like.
In this embodiment, the external gear 15 is detachably connected to the disc 14, the external gear 15 can slide along the circumferential direction of the disc 14, and the external gear 15 can be spliced together after sliding along the disc 14, and the external gear 15 is provided with a first fixing member 16 for fixing the external gear 15 on the disc 14 after sliding.
Specifically, the outer tooth bar 15 is provided with a groove on the inner side, the groove is engaged with the edge portion of the disk 14, and the outer tooth bar 15 can slide along the outer edge of the disk 14. The first fixing piece 16 is a first fixing bolt, the first fixing bolt is rotatably arranged on the side wall of the outer gear 15, and one end of the first fixing bolt, opposite to the disc 14, passes through the outer gear 15 and abuts against the disc surface of the disc 14 to form fixing.
The scheme has the following beneficial effects:
firstly, the external gear 15 is detachably connected to the disc 14, and when the external gear 15 is worn, damaged or the like, the external gear can be conveniently and quickly detached from the disc 14 and replaced.
Secondly, to different rivers states, can adjust its measurement scheme:
① . In a stationary water flow state, the water flow speed is relatively slow, the water surface is calm, the fluctuation of the data obtained by measurement is small, the measurement efficiency should be prioritized at this time, and the disk rotation speed is relatively slow due to the low water flow speed, in this case, the fixed point measurement quantity and the fixed point measurement time should be relatively reduced.
The number of teeth is increased by combining the outer racks 15, and the number of rotation turns of the gear 13 is increased due to the increase of the number of teeth, so that the number of rotation turns of the reciprocating screw 4 is increased, the moving distance of the first slider 5 is increased finally, the distance interval between adjacent fixed point measuring positions is increased, the fixed point number is correspondingly reduced, and the adjustment avoids excessive measurement in a data stabilizing area.
In addition, after the outer racks 15 are spliced, the non-meshing time of the outer racks 15 and the gear 13 is reduced, so that the stay time of the radar measurement unit 1 at each fixed point is shortened, the measurement progress is quickened, the measurement task of a channel can be completed in a shorter time, and the measurement efficiency is improved.
② . In faster water flow, the fluctuation of the flow speed and the water surface is larger, the difference of the flow speed and the water level at different positions is obvious, the measurement accuracy should be prioritized at this time, and the disk rotation speed is relatively higher due to the faster water flow speed, in this case, the fixed point measurement quantity and the fixed point measurement time should be relatively increased.
Through reducing outer rack 15 amalgamation quantity, make gear 13 rotate the number of turns reduction, reciprocating lead screw 4 rotates the number of turns and also correspondingly reduces, and then leads to the travel distance of first slider 5 to shorten, and the distance between every two adjacent fixed points reduces, and fixed point measurement quantity correspondingly increases, increases fixed point measurement quantity and can catch the velocity of flow and the water level change condition of different positions in the channel more carefully, improves measured data's density and precision.
In addition, in a faster water flow environment, the water flow changes rapidly, and longer fixed-point measurement time is required to stably acquire data so as to reduce measurement errors caused by water flow fluctuation. By reducing the number of the split external racks 15, the number of teeth of the external racks 15 is reduced, and the non-meshing time of the external tooth ring and the gear 13 is increased, so that the gear 13 has more dwell time in the rotating process, namely the stay time of the radar measuring unit 1 at each fixed point is prolonged, the fixed point measuring time is prolonged, the radar measuring unit 1 can have enough time to measure the current water flow, and the accuracy and the reliability of the measuring result are improved.
In this embodiment, the disc 14 is hollow in order to reduce the weight of the disc 14 to enhance the transmission effect. Because the excessively heavy disc 14 increases the load of the transmission system, more energy is required to be consumed in the starting and running processes to overcome the inertia of the disc 14, and the weight of the disc 14 is reduced and the transmission effect is improved after the hollow structure is adopted.
In the embodiment, the mounting plate 6 is connected to the bracket 3 in a sliding manner along the vertical direction, an air bag 17 is arranged below the mounting plate 6, and the mounting plate 6 can float above the liquid level of the channel through the air bag 17. Through the sliding connection of the mounting plate 6 and the bracket 3 and the cooperation between the mounting plate and the air bag 17, the mounting plate 6 can float above the liquid level of the channel and float up and down along with the change of the height of the liquid level, and then the water turbine 7 can move up and down along with the liquid level, so that the blades of the water turbine 7 can be always in a better position and can better receive the impact of water flow.
The support 3 is provided with two adjusting wheel sets, the two adjusting wheel sets are symmetrically distributed about a connecting line between the axle center of the first driving wheel 10 and the axle center of the second driving wheel 11, each adjusting wheel set comprises an adjusting wheel 18 and an elastic piece 19, and the adjusting wheels 18 are connected to the support 3 in a sliding mode along the length direction of the channel. The elastic piece 19 is arranged between the adjusting wheels 18 and the bracket 3, the two adjusting wheels 18 are both positioned on the inner side of the transmission piece 12, and under the action of the two elastic pieces 19, the two adjusting wheels 18 are both abutted against the transmission piece 12 and are in transmission fit with the transmission piece 12.
The main function of the adjusting wheel 18 is to tension the driving part 12, so that the driving part 12 keeps proper tension in the driving process, the phenomena of looseness, slipping and the like of the driving part 12 are effectively avoided, the driving has certain stability and reliability, and meanwhile, the adjusting wheel 18 can slide on the support 3 along the length direction of the channel to adapt to the length change of the driving part 12 under different conditions. For example, when the transmission member 12 is extended by the upward movement of the first transmission wheel 10 (the channel liquid level increases, the mounting plate 6 moves up with the liquid level by the air bag 17, and thus the first transmission wheel 10 moves up), the two adjustment wheels 18 slide back to back under the action of the two elastic members 19 to maintain the tension of the transmission member 12, whereas when the transmission member 12 is contracted by the downward movement of the first transmission wheel 10 (the channel liquid level decreases, the mounting plate 6 moves down with the liquid level by the air bag 17, and thus the first transmission wheel 10 moves down), the two adjustment wheels 18 slide relatively, and the elastic force of the two elastic members 19 compresses.
The scheme has the following beneficial effects:
① . The buoyancy generated by the air bag 17 can enable the mounting plate 6 to float above the liquid level of the channel and float up and down along with the change of the liquid level, so as to drive the water turbine 7 to move together. Therefore, the blades of the water turbine 7 can be always in an ideal position, so that the impact of water flow can be better received, the energy conversion efficiency of the water turbine 7 can be improved, more kinetic energy of the water flow is converted into mechanical energy, the generating capacity is increased or other power demands are met, and the energy utilization efficiency of the whole system is improved.
② . No matter how the channel liquid level changes, the water turbine 7 can automatically adjust the position without manual frequent intervention. The characteristic improves the adaptability and the automation degree of the system, and effectively reduces the manual operation cost.
③ . Because the blades of the water turbine 7 can be positioned at a proper position all the time, the situation that the water flow cannot impact the water turbine 7 to rotate because the water turbine 7 is completely immersed under the liquid level of the channel or is completely exposed above the liquid level can be effectively avoided, and the situations of power generation, transmission failure and the like are reduced.
④ . The regulating wheel 18 is abutted against the transmission piece 12 under the action of the elastic piece 19 and is in transmission fit with the transmission piece 12, so that the transmission piece 12 is tensioned, the phenomena of looseness, slipping and the like of the transmission piece 12 are effectively avoided, and the transmission has certain stability and reliability.
⑤ . The symmetrically distributed adjusting wheel sets can make the force applied to the transmission member 12 more uniform in the transmission process.
In the embodiment, a cross rod 20 is arranged on the bracket 3 along the length direction of the channel, a strip-shaped sliding rail is arranged on the cross rod 20 along the length direction of the cross rod 20, two second sliding blocks 21 are arranged on the strip-shaped sliding rail in a sliding mode, the two second sliding blocks 21 can slide along the length direction of the cross rod 20, and two adjusting wheels 18 are respectively connected to the two second sliding blocks 21 in a rotating mode. The second sliding block 21 is rotatably connected with the adjusting wheel 18 to provide support and rotation axes for the adjusting wheel 18, so that the adjusting wheel 18 can normally rotate in the transmission process, and on the other hand, the second sliding block 21 can slide on the strip-shaped sliding rail to drive the adjusting wheel 18 to move along the length direction of the cross rod 20 so as to adapt to the change of the length of the transmission piece 12, and tensioning adjustment of the transmission piece 12 is realized.
The opposite ends of the two second sliding blocks 21 are respectively connected with one end of the two elastic pieces 19, two third sliding blocks 22 are arranged between the two elastic pieces 19, and the opposite ends of the two third sliding blocks 22 are respectively connected with the opposite ends of the two elastic pieces 19. Specifically, the elastic member 19 is a spring, opposite ends of the two second sliding blocks 21 are fixedly connected with one of the two springs, and opposite ends of the two third sliding blocks 22 are fixedly connected with opposite ends of the two springs.
A transmission rod 23 is vertically arranged in the middle of the two third sliding blocks 22, the lower ends of the transmission rods 23 extend vertically downwards and are fixedly connected with the mounting plate 6, and because the transmission rods 23 are fixedly connected with the mounting plate 6, when the mounting plate 6 floats up and down along with the change of the liquid level height under the action of the air bags 17, the transmission rods 23 can synchronously move up and down.
Two inclined rods 24 are respectively arranged on two sides of the transmission rod 23, the lower ends of the two inclined rods 24 are obliquely arranged in the direction away from the transmission rod 23, and one opposite sides of the two inclined rods 24 are respectively abutted with opposite ends of the two third sliding blocks 22.
When the transmission rod 23 moves upward, the inclined rod 24 moves upward, and the inclined rod 24 is inclined to push the third sliding block 22 abutting against the inclined rod to move along the strip-shaped sliding rail in a direction away from the transmission rod 23, so that the elastic piece 19 connected between the second sliding block 21 and the third sliding block 22 is compressed. After the elastic piece 19 is compressed, the elastic force is increased, the elastic force is transmitted to the adjusting wheel 18 through the second sliding block 21, so that the adjusting wheel 18 is far away from the transmission rod 23, and the tensioning force of the transmission piece 12 is increased, if the tension force is adjusted only by the elastic force of the elastic piece 19, the elastic force can be reduced after the elastic piece 19 drives the adjusting wheel 18 to move, the fluctuation range of the elastic force is larger, and the tensioning force of the transmission piece 12 is changed more greatly. The third slider 22 can be actively and rapidly pushed to move by the pushing action of the diagonal rod 24, and the action of the diagonal rod responds to the elongation of the transmission piece 12 in advance, so that a certain compensation action is achieved, the fluctuation range of the elastic force applied to the adjusting wheel 18 by the elastic piece 19 in the adjusting process is smaller, the adjustment is smoother, the fluctuation range of the tension force of the transmission piece 12 is smaller, and the tension force of the transmission piece 12 is smoother.
Similarly, when the transmission rod 23 moves downward, the diagonal rod 24 moves downward. At this time, the diagonal lever 24 no longer applies a pushing force to the third slider 22 in a direction away from the transmission lever 23, but leaves room for the third slider 22 to move in a direction toward the transmission lever 23. When the mounting plate 6 moves downwards, the transmission member 12 can press the adjusting wheel 18, so that the adjusting wheel 18 moves towards the direction of the transmission rod 23, if no space is left for the third sliding block 22 to move towards the direction close to the transmission rod 23, the elastic member 19 can be further compressed, the elastic force of the elastic member 19 is increased, and the fluctuation range of the elastic force is large. The inclined rod 24 can play a certain role in compensating the elastic element 19, so that the fluctuation range of the elastic force applied by the elastic element 19 to the adjusting wheel 18 is smaller, the fluctuation range of the tension of the transmission element 12 is smaller, and the tension of the transmission element 12 is smoother.
In the embodiment, the upper ends of the two diagonal rods 24 are hinged with the top of the transmission rod 23, a fourth sliding block 26 is slidably connected on the transmission rod 23 along the length direction of the transmission rod 23, two supporting rods 25 are respectively arranged between two sides of the fourth sliding block 26 and the two diagonal rods 24, one end of each supporting rod 25 is hinged with the middle of each diagonal rod 24, the other end of each supporting rod is hinged with the fourth sliding block 26, and a second fixing piece 27 for fixing the fourth sliding block 26 on the transmission rod 23 is arranged on each fourth sliding block 26. Through the above structure setting, can realize the regulation to the contained angle between diagonal bar 24 and the transfer line 23. In this way, the movement of the third slider 22 can be better adapted to the elongation or shortening of the transmission member 12, so that the fluctuation range of the elastic force of the elastic member 19 in the adjustment process is smaller, and the tension of the transmission member 12 is smoother.
Specifically, the second fixing member 27 is a second fixing bolt, the second fixing bolt is rotatably provided with the fourth slider 26, and one end of the second fixing bolt, which is close to the transmission rod 23, passes through the fourth slider 26 and abuts against the transmission rod 23 to form fixation by rotating the second fixing bolt.
The second invention is that:
A method of measurement comprising the steps of:
Step one, completing the installation and fixation of the bracket 3, wherein the installation plate 6 floats above the liquid level of the channel, and water flow can impact the water turbine 7 to rotate;
step two, starting the radar measuring unit 1 and the data acquisition and processing unit 2, enabling the water flow to impact the water turbine 7 to rotate, enabling the reciprocating screw rod 4 to rotate through the transmission component, further driving the radar measuring unit 1 to move back and forth to achieve dynamic measurement, and simultaneously enabling the water turbine 7 to rotate to transmit mechanical energy to the generator 8 to generate electricity and enabling the storage battery to store electric energy;
And thirdly, collecting flow speed and water level data acquired by the radar sensor by the data acquisition processing unit 2, calculating instantaneous flow and accumulated flow by combining the preset cross section shape and size of the channel according to the acquired flow speed and water level data and applying a flow calculation formula, and finally transmitting the processed data to a remote monitoring center or an upper computer system to realize dynamic monitoring.
It should be understood that the foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to practice it accordingly, it should not be construed that the present invention is limited to the embodiments, and that several simple deductions or substitutions may be made by those skilled in the art without departing from the spirit of the present invention, and all equivalent changes or modifications according to the spirit of the present invention shall be covered in the scope of the present invention.
Claims (8)
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