CN107703327B - Laser velocity measuring device for measuring liquid or gas flow velocity and application method thereof - Google Patents
Laser velocity measuring device for measuring liquid or gas flow velocity and application method thereof Download PDFInfo
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- CN107703327B CN107703327B CN201711037257.4A CN201711037257A CN107703327B CN 107703327 B CN107703327 B CN 107703327B CN 201711037257 A CN201711037257 A CN 201711037257A CN 107703327 B CN107703327 B CN 107703327B
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- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
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Abstract
The invention discloses a laser speed measuring device and a using method thereof, wherein the laser speed measuring device comprises a fixed box body, a connecting piece, a laser speed measuring device and a manual rotating device, wherein the bottom surface of the fixed box body is provided with a vertical positioning rod, and the fixed box body is horizontally and fixedly arranged through the positioning rod; the connecting piece is horizontally and fixedly arranged on the side surface of the fixed box body, the laser speed measuring device is connected with the fixed box body through the connecting piece and is pushed or pulled, and the laser speed measuring device can move back and forth in the horizontal direction; the manual rotating device is rotatably connected with the connecting piece, the manual rotating device is connected with the laser speed measuring device through a gear transmission, the manual rotating device is rotated, and the laser speed measuring device can move back and forth in the vertical direction. The laser speed measuring device and the use method thereof provided by the invention can measure the flow velocity of liquid or gas, are simple to operate and are easy to popularize.
Description
Technical Field
The invention belongs to the technical field of laser velocity measurement, and particularly relates to a laser velocity measurement device for measuring liquid or gas flow velocity and a use method thereof.
Background
With the progress of society, the development of science and technology is very rapid, and especially the laser speed measurement field is advanced obviously in the 21 st century. Current laser velocimetry technology is capable of measuring the speed of high speed flying objects, or fast moving objects, such as traffic laser velocimeters for measuring whether the car is overspeed or not, etc. However, there is a great need for an apparatus or device for measuring a liquid or gas using a laser technique, in which the velocity of a flowing liquid, such as river water, is measured using a laser technique, the velocity of a flowing gas, such as air, is very small, and there may be a relatively large error in the measurement using other devices.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides the laser velocity measuring device and the use method thereof, which can measure the flow velocity of the flowing liquid or the flow velocity of the flowing gas, are simple to operate, accurate in measurement and easy to popularize.
The technical scheme is as follows: in order to achieve the above purpose, the laser speed measuring device and the using method thereof comprise a fixed box body, a connecting piece, a laser speed measuring device and a manual rotating device, wherein a vertical positioning rod is arranged on the bottom surface of the fixed box body, and the fixed box body is horizontally and fixedly arranged through the positioning rod; the connecting piece is horizontally and fixedly arranged on the side surface of the fixed box body, the laser speed measuring device is connected with the fixed box body through the connecting piece and is pushed or pulled, and the laser speed measuring device can move back and forth in the horizontal direction; the manual rotating device is rotatably connected with the connecting piece, the manual rotating device is connected with the laser speed measuring device through gear transmission, the manual rotating device is rotated, the laser speed measuring device can move back and forth in the vertical direction, the relative distance between the laser speed measuring device and the fixed box body is pulled, the mutual influence between the devices is reduced, and the laser speed measuring device can be placed in the measured liquid by moving in the vertical direction, so that the speed measuring is facilitated.
Further, the connecting pieces are two groups of the same structure, and the two groups of the connecting pieces are arranged in the same horizontal plane; the connecting piece comprises a telescopic rod, a circular ring and a first connecting rod, wherein the side face of the telescopic rod vertical fixing box body is fixedly arranged, and the first connecting rod is connected with the telescopic rod into an integrated structure through the circular ring.
Further, the laser speed measuring device comprises a first partition board, a second connecting rod, a laser emitting device, a laser receiving device and a speed measuring rotating device, wherein an annular handle is arranged on the second partition board, and the first partition board is connected with the second partition board through the second connecting rod; the speed measuring rotating device is connected with the second connecting rod in a rotating mode, the laser transmitting device is arranged on the first partition board, the laser receiving device is arranged on the second partition board, and the laser transmitting device and the laser receiving device are arranged oppositely.
Further, the speed measuring and rotating device comprises a rotating cylinder, a plurality of speed measuring plates and a fan-shaped connecting plate, an annular groove is formed in the second connecting rod in a surrounding mode, and the rotating cylinder is rotatably sleeved in the annular groove; the speed measuring plates are circumferentially distributed on the outer side surface of the rotating cylinder, adjacent speed measuring plates are respectively connected and arranged through fan-shaped connecting plates, and a large circle with the radius of R is formed by the fan-shaped connecting plates in the same plane; one of the fan-shaped connecting plates is provided with a laser passing hole, the speed measuring rotating device rotates for one circle, the laser passing hole forms a small circle with the radius R, and the radius R of the large circle is twice the radius R of the small circle.
Further, two vertical slideways are symmetrically arranged on the outer plate surface of the first partition plate, rollers are arranged on the rod end of the first connecting rod, and the rollers are arranged in the slideways in a rolling fit manner; the two sides of the slideway are provided with arc-shaped limiting grooves, two ends of the rolling shaft of the rolling wheel are provided with limiting round heads, and the limiting round heads are correspondingly matched with the arc-shaped limiting grooves.
Further, the manual rotating device comprises a rotating inner rod and a rotating outer rod which is integrated with the rotating inner rod, the rotating inner rod is rotatably matched and arranged in the circular ring, one end of the rotating inner rod is provided with a rotating hand wheel, and the other end of the rotating inner rod is provided with a stop block; two groups of teeth are arranged on the rod wall of the rotary outer rod in a surrounding mode, the same group of teeth are provided with gears, two vertical racks are symmetrically arranged on the outer plate surface of the first partition plate, and the gears are connected with the racks through teeth in a transmission mode.
Further, the inside of fixed box is provided with power supply unit, motor and data collection processing apparatus respectively with power supply unit electric connection, and be provided with the timing module in the data collection processing apparatus.
Further, the top of fixed box is provided with the bubble spirit level, the bilateral symmetry of fixed box is provided with fixed handle ring, one of them be provided with control switch on the fixed handle ring, control switch and motor electric connection.
Further, the bottom of locating lever sets up the auger bit, the top of locating lever extends to the inside of fixed box, and the locating lever is connected with the motor drive who sets up in fixed box.
Further, when the flow rate of river water is measured, the fixed handle ring is held by two hands, the control switch is pressed, the motor is started, the motor drives the spiral drill bit to rotate to drill into a river bed, the fixed box body can be fixed, the annular handle is pulled by the hand, the telescopic rod is extended, then the hand wheel is rotated, the laser speed measuring device moves downwards and enters into water, the river water continuously impacts the speed measuring plate, and the speed measuring rotating device rotates, so that the laser emitting device and the laser receiving device can be started to measure the speed; when the laser receiving device receives the laser for the first time, the timing module records the time at the moment as t1, the time for receiving the laser for the second time as t2, the data collecting and processing device records and obtains the time difference of the laser received for the two times, and in the time difference, the perimeter L=2pi r of the laser passing through the hole is obtained, and the data collecting and processing device can calculate the flow rate of river water;
when measuring wind speed, the air bubble level meter is used for measuring the level of the fixed box body in a horizontal open zone, so that the accuracy of wind speed measurement can be improved, and the rest steps are the same as measuring the flow speed of river water.
The beneficial effects are that: according to the laser speed measuring device and the use method thereof, the rotation of the speed measuring rotation device is utilized, the flow velocity of liquid or gas can be measured by combining a laser speed measuring technology, the movement of the laser speed measuring device in the horizontal direction can be realized by utilizing the telescopic rod, the distance between the devices is pulled, errors are reduced, the manual rotation device is convenient for adjusting the height of the laser speed measuring device, so that the laser speed measuring device enters into the liquid to be measured, the speed measuring is finished, and compared with other laser speed measuring devices, the laser speed measuring device is convenient to operate, accurate in measurement and convenient to popularize.
Drawings
FIG. 1 is a schematic exploded view of the structure of the present invention;
FIG. 2 is a schematic diagram of the overall structure of the present invention;
FIG. 3 is an enlarged schematic view of A in FIG. 1;
FIG. 4 is an enlarged schematic view of the structure of B (tachometer rotor) of FIG. 1;
FIG. 5 is a schematic cross-sectional view of a slideway;
FIG. 6 is a schematic front view of the tachometer rotor;
fig. 7 is a schematic view of the internal structure of the case.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 to 7, a laser speed measuring device and a using method thereof comprise a fixed box body 1, a connecting piece, a laser speed measuring device and a manual rotating device, wherein a vertical positioning rod 4 is arranged on the bottom surface of the fixed box body 1, and the fixed box body 1 is horizontally and fixedly arranged through the positioning rod 4; the connecting piece is horizontally and fixedly arranged on the side surface of the fixed box body 1, the laser speed measuring device is connected with the fixed box body 1 through the connecting piece and is pushed or pulled, and the laser speed measuring device can move back and forth in the horizontal direction; the manual rotating device is rotatably connected with the connecting piece, the manual rotating device is connected with the laser speed measuring device through a gear transmission, the manual rotating device is rotated, and the laser speed measuring device can move back and forth in the vertical direction.
In order to improve the stability and balance of the connection between the devices, the connecting pieces are two groups of the same structure, and the two groups of the connecting pieces are arranged in the same horizontal plane; the connecting piece includes telescopic link 7, ring 8 and head rod 9, the side of telescopic link 7 perpendicular fixed box 1 is fixed to be set up, and head rod 9 passes through ring 8 and is connected into an organic whole structure with telescopic link 7, and telescopic link 7 can pull open the concrete of laser speed sensor and fixed box 1, avoids the influence of fixed box 1 and reduces the accuracy of measuring speed.
The laser speed measuring device comprises a first partition plate 15, a second partition plate 16, a second connecting rod 17, a laser emitting device 20, a laser receiving device 19 and a speed measuring rotating device, wherein an annular handle 23 is arranged on the second partition plate 16, the annular handle 23 is convenient for pulling or pushing the laser speed measuring device, the first partition plate 15 and the second partition plate 16 are connected through the second connecting rod 17, a channel is formed between the first partition plate 15 and the second partition plate 16, the passage of liquid or gas to be measured is facilitated, and the rotation condition of the speed measuring rotating device is also facilitated to be observed; the speed measuring rotating device is rotatably connected with the second connecting rod 17, the laser transmitting device 20 is arranged on the first partition plate 15, the laser receiving device 19 is arranged on the second partition plate 16, and the laser transmitting device 20 and the laser receiving device 19 are oppositely arranged, so that the laser receiving device 19 can normally receive laser.
The speed measuring rotating device comprises a rotating cylinder 24, a plurality of speed measuring plates 25 and a fan-shaped connecting plate 26, wherein an annular groove 18 is circumferentially arranged on the second connecting rod 17, the rotating cylinder 24 is rotatably sleeved in the annular groove 18, the speed measuring plates 25 are used for forming resistance of water flow or resistance of air flow, so that the speed measuring rotating device is rotated, and the fan-shaped connecting plate 26 is used for shielding laser; the speed measuring plates 25 are circumferentially distributed on the outer side surface of the rotary cylinder 24, adjacent speed measuring plates 25 are respectively connected and arranged through fan-shaped connecting plates 26, and a large circle 35 with the radius of R is formed by the fan-shaped connecting plates 26 in the same plane; in order that the laser emitted by the laser emitting device 20 can be successfully received by the laser receiving device 19, one of the fan-shaped connecting plates 26 is provided with a laser passing hole 27, the speed measuring rotating device rotates for one circle, the laser passing hole 27 forms a small circle 36 with a radius R, the radius R of the large circle 35 is twice the radius R of the small circle 36, the radius R of the large circle 35 is easy to measure, the radius R of the small circle 36 is convenient to calculate, and errors are reduced.
Two vertical slideways 21 are symmetrically arranged on the outer plate surface of the first partition plate 15, rollers 29 are arranged on the rod ends of the first connecting rods 9, and the rollers 29 are arranged in the slideways 21 in a rolling fit manner; the both sides of slide 21 are provided with arc spacing groove 30, the roller bearing both ends of gyro wheel 29 are provided with spacing button head 28, spacing button head 28 corresponds the cooperation setting with arc spacing groove 30, guarantees that laser velocimetry can remove in vertical direction, and gyro wheel 29 can reduce the friction moreover, increase of service life.
The manual rotating device comprises a rotating inner rod 11 and a rotating outer rod 10 integrated with the rotating inner rod 11, wherein the rotating inner rod 11 is rotatably matched and arranged in the circular ring 8, one end of the rotating inner rod 11 is provided with a rotating hand wheel 13, and the other end of the rotating inner rod 11 is provided with a stop block 14; two groups of teeth are arranged on the rod wall of the rotary outer rod 10 in a surrounding mode, the same group of teeth are provided with gears 12, two vertical racks 22 are symmetrically arranged on the outer plate surface of the first partition plate 15, the gears 12 are connected with the racks 22 through tooth transmission, the rotary hand wheel 13 is rotated, the laser speed measuring device can move through tooth transmission, and the tooth transmission is controlled well.
The inside of the fixed box body 1 is provided with a power supply device 32, a motor 33 and a data collection processing device 34, the motor 33 and the data collection processing device 34 are respectively and electrically connected with the power supply device 32, and a timing module is arranged in the data collection processing device 34.
The top of fixed box 1 is provided with the bubble spirit level, the both sides symmetry of fixed box 1 is provided with fixed handle ring 2, one of them be provided with control switch 6 on the fixed handle ring 2, control switch 6 and motor 33 electric connection, fixed handle ring 2 conveniently fix fixed box 1, and the position that control switch 6 set up also more conveniently controls opening or switching of motor 33.
The bottom of locating lever 4 sets up auger bit 5, the top of locating lever 4 extends to the inside of fixed box 1, and locating lever 4 is connected with the motor 33 drive that sets up in fixed box 1, and auger bit 5 brill ground is relatively easier than faster, and is fixed also more firm.
When the flow rate of river water is measured, the fixed handle ring 2 is held by two hands, the control switch 6 is pressed, the motor 33 is started, the motor 33 drives the spiral drill bit 5 to rotate to drill into a river bed, the fixed box body 1 can be fixed, the annular handle 23 is pulled by hands, the telescopic rod 7 is stretched, then the rotary hand wheel 13 is rotated, the laser speed measuring device moves downwards and enters into water, the river water continuously impacts the speed measuring plate 25, the speed measuring rotating device rotates, and the laser emitting device 20 and the laser receiving device 19 can be started for measuring the speed; when the laser receiving device 19 receives the laser for the first time, the timing module records the time at the moment as t1, the time for receiving the laser for the second time as t2, the data collecting and processing device 34 records and obtains the time difference for receiving the laser for the second time, and in one time difference, the perimeter L=2pi r of the laser passing through the hole 27 is passed through, and the data collecting and processing device 34 can calculate the flow rate of river water;
when measuring wind speed, the air bubble level meter 3 is used for measuring the level of the fixed box body 1 in a horizontal open zone, so that the accuracy of wind speed measurement can be improved, and the rest steps are the same as measuring the flow speed of river water.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (3)
1. A laser speed measuring device is characterized in that: the laser speed measuring device comprises a fixed box body (1), a connecting piece, a laser speed measuring device and a manual rotating device, wherein a vertical positioning rod (4) is arranged on the bottom surface of the fixed box body (1), and the fixed box body (1) is horizontally and fixedly arranged through the positioning rod (4); the connecting piece is horizontally and fixedly arranged on the side surface of the fixed box body (1), the laser speed measuring device is connected with the fixed box body (1) through the connecting piece and pushes or pulls the speed measuring device, and the laser speed measuring device can move back and forth in the horizontal direction; the manual rotating device is rotatably connected with the connecting piece, the manual rotating device is connected with the laser speed measuring device through a tooth transmission, and the laser speed measuring device can move back and forth in the vertical direction by rotating the manual rotating device;
the connecting pieces are two groups of the same structure, and the two groups of the connecting pieces are arranged in the same horizontal plane; the connecting piece comprises a telescopic rod (7), a circular ring (8) and a first connecting rod (9), wherein the telescopic rod (7) is vertically fixed on the side face of the box body (1) and is fixedly arranged, and the first connecting rod (9) is connected with the telescopic rod (7) through the circular ring (8) to form an integrated structure;
the laser speed measuring device comprises a first partition board (15), a second partition board (16), a second connecting rod (17), a laser emitting device (20), a laser receiving device (19) and a speed measuring rotating device, wherein an annular handle (23) is arranged on the second partition board (16), and the first partition board (15) and the second partition board (16) are connected through the second connecting rod (17); the speed measuring rotating device is rotatably connected with the second connecting rod (17), the laser transmitting device (20) is arranged on the first partition board (15), the laser receiving device (19) is arranged on the second partition board (16), and the laser transmitting device (20) and the laser receiving device (19) are oppositely arranged;
the speed measuring rotating device comprises a rotating cylinder (24), a plurality of speed measuring plates (25) and a fan-shaped connecting plate (26), an annular groove (18) is formed in the second connecting rod (17) in a surrounding mode, and the rotating cylinder (24) is rotatably sleeved in the annular groove (18); the speed measuring plates (25) are circumferentially distributed on the outer side surface of the rotary cylinder (24), adjacent speed measuring plates (25) are respectively connected and arranged through fan-shaped connecting plates (26), and the fan-shaped connecting plates (26) form a large circle (35) with radius R in the same plane; one fan-shaped connecting plate (26) is provided with a laser passing hole (27), the speed measuring rotating device rotates for one circle, the laser passing hole (27) forms a small circle (36) with the radius R, and the radius R of the big circle (35) is twice the radius R of the small circle (36);
two vertical slideways (21) are symmetrically arranged on the outer plate surface of the first partition plate (15), rollers (29) are arranged on the rod ends of the first connecting rods (9), and the rollers (29) are arranged in the slideways (21) in a rolling fit manner; arc-shaped limiting grooves (30) are formed in two sides of the slideway (21), limiting round heads (28) are arranged at two ends of a rolling shaft of the rolling wheel (29), and the limiting round heads (28) are correspondingly matched with the arc-shaped limiting grooves (30);
the manual rotating device comprises a rotating inner rod (11) and a rotating outer rod (10) integrated with the rotating inner rod (11), wherein the rotating inner rod (11) is rotatably matched and arranged in the circular ring (8), one end of the rotating inner rod (11) is provided with a rotating hand wheel (13), and the other end of the rotating inner rod is provided with a stop block (14); two groups of teeth are arranged on the rod wall of the rotary outer rod (10) in a surrounding mode, the same group of teeth form gears (12), two vertical racks (22) are symmetrically arranged on the outer plate surface of the first partition plate (15), and the gears (12) are connected with the racks (22) through teeth in a transmission mode;
the bubble level is arranged at the top of the fixed box body (1), fixed handle rings (2) are symmetrically arranged on two sides of the fixed box body (1), a control switch (6) is arranged on one fixed handle ring (2), and the control switch (6) is electrically connected with a motor (33);
the bottom of locating lever (4) sets up auger bit (5), the top of locating lever (4) extends to the inside of fixed box (1), and locating lever (4) are connected with motor (33) drive that set up in fixed box (1).
2. A laser speed measuring device according to claim 1, wherein: the inside of fixed box (1) is provided with power supply unit (32), motor (33) and data collection processing apparatus (34) are connected with power supply unit (32) electricity respectively, and are provided with the timing module in data collection processing apparatus (34).
3. A method of using a laser speed measuring device as claimed in any one of claims 1 to 2: when the flow rate of river water is measured, the fixed handle ring (2) is held by two hands, the control switch (6) is pressed, the motor (33) is started, the motor (33) drives the spiral drill bit (5) to rotate and drill into a river bed, the fixed box body (1) can be fixed, the annular handle (23) is pulled by hand, the telescopic rod (7) stretches, then the rotary hand wheel (13) is rotated, the laser speed measuring device moves downwards and enters into water, the river water continuously impacts the speed measuring plate (25), the speed measuring rotating device rotates, and the laser transmitting device (20) and the laser receiving device (19) can be started to measure the speed; when the laser receiving device (19) receives the laser for the first time, the time of the timing module records the time at the moment as t1, the time of the laser receiving device for the second time as t2, the data collecting and processing device (34) records and obtains the time difference of the laser receiving two times, and in the time difference, the perimeter L=2pi r of the laser passing hole (27) passes through, and the data collecting and processing device (34) can calculate the flow rate of river water;
when measuring wind speed, the air bubble level meter (3) is used for carrying out level measurement of the fixed box body (1) in a horizontal open zone, so that the accuracy of wind speed measurement can be improved, and the rest steps are the same as those of measuring the river water flow rate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711037257.4A CN107703327B (en) | 2017-10-30 | 2017-10-30 | Laser velocity measuring device for measuring liquid or gas flow velocity and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711037257.4A CN107703327B (en) | 2017-10-30 | 2017-10-30 | Laser velocity measuring device for measuring liquid or gas flow velocity and application method thereof |
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| CN107703327A CN107703327A (en) | 2018-02-16 |
| CN107703327B true CN107703327B (en) | 2023-05-09 |
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