CN111024979B - Depth-measurable current meter - Google Patents

Depth-measurable current meter Download PDF

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Publication number
CN111024979B
CN111024979B CN201911249813.3A CN201911249813A CN111024979B CN 111024979 B CN111024979 B CN 111024979B CN 201911249813 A CN201911249813 A CN 201911249813A CN 111024979 B CN111024979 B CN 111024979B
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China
Prior art keywords
measuring rod
measuring
tape
depth
free
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CN201911249813.3A
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Chinese (zh)
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CN111024979A (en
Inventor
徐丹
卢佳
苗智英
邵光成
吴世清
胡越
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Hohai University HHU
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Hohai University HHU
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P5/00Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
    • G01P5/08Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring variation of an electric variable directly affected by the flow, e.g. by using dynamo-electric effect
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01CMEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C13/00Surveying specially adapted to open water, e.g. sea, lake, river or canal
    • G01C13/008Surveying specially adapted to open water, e.g. sea, lake, river or canal measuring depth of open water
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm
    • G01F23/04Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm by dip members, e.g. dip-sticks

Abstract

The invention discloses a depth-measurable current meter, which belongs to the field of soil and water monitoring and comprises a measuring rod, an electromagnetic current sensor and a measuring tape, wherein the measuring rod is formed by connecting a plurality of pipe bodies end to end, the current sensor is fixed at the lower end of the measuring rod through sleeving, and the measuring tape is fixed at the upper end of the measuring rod through sleeving. The yellow metal sheet at the free end of the measuring tape is convenient for human eyes to determine whether the measuring tape reaches the water surface, so that the problem of difficult reading due to transparent water and light measuring tape color is solved; the tape measure is discharged from a fixed position to reach the water surface, the reading represents the distance from the water surface to the fixed position, the difference between the distance from the bottom of the channel to the fixed position (before water drainage) and the corresponding reading is the corresponding water depth, and the reading is placed under the eye through the formula conversion, so that the problem of difficult reading due to long distance is solved; in addition, one person can complete two works of holding the measuring rod and measuring the water depth simultaneously, and the number of working people is reduced.

Description

Depth-measurable current meter
Technical Field
The invention belongs to the field of water and soil monitoring, and particularly relates to a depth-measurable current meter.
Background
The current meter is an instrument for measuring the flow velocity or flow of water, and the commonly used portable current meter comprises a flow velocity sensor and a measuring rod, wherein the measuring rod is provided with scales.
When the work of 'breaking water by electricity' is carried out, personnel responsible for the measurement work outside the pump station not only need to read out the flow velocity according to the set time interval, but also need to measure the changing water depth, thereby calculating the flow by combining the channel section size.
Generally, three people are required to complete the measurement work outside the pump station: the first person holds the measuring rod, the second person holds the display instrument and records, and the third person uses a steel ruler or a tape measure to measure the water depth. However, when measuring the water depth with a steel ruler or a measuring tape (collectively referred to as a measuring tape), on one hand, the water is transparent, and the color of the measuring tape is light, so that the position of the water surface is difficult to accurately judge; on the other hand, when the water is high and shallow, the human eyes are far away from the reading position, and the reading is difficult to be accurately and quickly carried out.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a depth-measurable current meter, which solves the problem of inconvenience in water depth measurement in the prior art.
The technical scheme is as follows: in order to achieve the purpose, the invention provides the following technical scheme:
the depth-measurable flow rate meter comprises a measuring rod, an electromagnetic flow rate sensor and a tape measure, wherein the measuring rod is formed by connecting a plurality of pipe bodies end to end, the flow rate sensor is fixed at the lower end of the measuring rod in a sleeved mode, and the tape measure is fixed at the upper end of the measuring rod in a sleeved mode.
Furthermore, the measuring rod is formed by connecting a plurality of stainless steel pipes through threads and comprises a bottom measuring rod, a plurality of middle measuring rods and a top measuring rod, wherein one end of the bottom measuring rod is a bottom measuring rod cone, and the other end of the bottom measuring rod is a bottom measuring rod external thread; the middle measuring rods have the same structure, and one end of each middle measuring rod is provided with an internal thread, and the other end of each middle measuring rod is provided with an external thread; one end of the top measuring rod is provided with an internal thread, and the other end of the top measuring rod is provided with a handle; the bottom measuring rod, the plurality of middle measuring rods and the top measuring rod are all stainless steel tubes.
Furthermore, a measuring rod handle is arranged at the top of the measuring rod, and the top end of the measuring rod handle is a circular level gauge.
Furthermore, the electromagnetic flow velocity sensor comprises a sensor main body and an empennage, wherein the sensor main body is fixedly connected with the empennage.
Furthermore, the tape measure comprises a shell, a fixed ring, a rotating shaft, a limiting wafer, a rotating handle and a graduated tape; the shell is fixedly connected with the fixed ring, and a threaded through hole is formed in the fixed ring and used for a positioning screw to screw in to abut against the measuring rod, so that the tape measure is fixed. The rotating shaft is inserted from the center of the shell, and the two ends of the rotating shaft are limited by the round sheets, so that the rotating shaft can only rotate around the central shaft and cannot move. The rotary handle penetrates through a through hole in the circle center of the limiting wafer to be fixedly connected with the rotating shaft, the scale is wound on the rotating shaft in the shell, and the scale is folded and unfolded through an opening in the lowest part of the shell by rotation of the rotary handle.
Furthermore, the graduated tape comprises a tape main body, a free end yellow metal sheet, a free end ring and a buckle; the free end circular ring is connected with the free end yellow metal sheet through a buckle.
Further, the width of the tape measure main body is 1.5 cm; the width of the free-end yellow metal sheet is 1.5cm, and the length of the free-end yellow metal sheet is 2 cm; the outer diameter of the free end ring is 2.8cm, the inner diameter of the free end ring is 2.4cm, and the height of the free end ring is 0.3 cm; the diameter of the buckle is 0.5 cm.
Furthermore, the length (excluding the length of the external thread and the length of the handle) of the stainless steel tube of the bottom measuring rod, the plurality of middle measuring rods and the top measuring rod is 50cm, and the diameter of the stainless steel tube is 2 cm. The length of the external thread is 2cm, the diameter of the external thread is 1.4cm, and the internal thread is matched with the external thread.
Furthermore, the length of the measuring rod handle is 9cm, and the diameter of the measuring rod handle is 3 cm; the diameter of the round level gauge is 2 cm.
Has the advantages that: compared with the prior art, the depth-measurable current meter provided by the invention is additionally provided with the circular level meter which is used for helping to determine the vertical direction of the measuring rod on the basis of the traditional measuring rod, and the tape measure which is convenient for reading the water depth with change in the flow measuring process is also added; the yellow metal sheet at the free end of the measuring tape is convenient for human eyes to determine whether the measuring tape reaches the water surface, so that the problem of difficult reading due to transparent water and light measuring tape color is solved; the tape measure is discharged from a fixed position to reach the water surface, the reading represents the distance from the water surface to the fixed position, the difference between the distance from the bottom of the channel to the fixed position (before water drainage) and the corresponding reading is the corresponding water depth, and the reading is placed under the eye through the formula conversion, so that the problem of difficult reading due to long distance is solved; in addition, one person can complete two works of holding the measuring rod and measuring the water depth simultaneously, and the number of working people is reduced.
Drawings
FIG. 1 is a schematic structural view of a depth-measurable flow meter;
FIG. 2 is a schematic structural diagram of measuring rods of each section;
FIG. 3 is a schematic view of a flow rate sensor;
FIG. 4 is a front view of the tape measure;
FIG. 5 is a right side view of the tape measure;
FIG. 6 is an exploded view of the fixed ring of the tape measure;
fig. 7 is a schematic view of the fixed ring structure of the tape measure.
Detailed Description
The invention will be further described with reference to the following drawings and specific embodiments.
As shown in fig. 1-7, the reference numerals are as follows: the measuring bar comprises a measuring bar 1, a bottom measuring bar cone 11, a bottom measuring bar external thread 12, a middle measuring bar internal thread 13, a middle measuring bar external thread 14, a top measuring bar internal thread 15, a measuring bar handle 16, a circular level gauge 17, an electromagnetic flow velocity sensor 2, a sensor main body 21, a tail fin 22, a measuring tape 3, a shell 31, an opening 311, a fixing ring 32, a threaded through hole 321, a positioning screw 322, a rotating shaft 33, a limiting wafer 34, a rotating handle 35, a graduated tape 36, a tape main body 361, a free end yellow metal sheet 362, a free end ring 363 and a buckle 364.
But depth sounding current meter, including measuring staff 1, electromagnetism velocity of flow sensor 2 and tape measure 3, measuring staff 1 is threaded connection's stainless steel pipe, and velocity of flow sensor 2 fixes on measuring staff 1 through cup jointing, and tape measure 3 fixes on measuring staff 1 through cup jointing from the ring 32 of taking.
The measuring rod 1 is formed by connecting a plurality of sections of stainless steel pipes through threads and comprises a bottom measuring rod, a plurality of middle measuring rods and a top measuring rod, wherein one end of the bottom measuring rod is a bottom measuring rod cone 11, and the other end of the bottom measuring rod is a bottom measuring rod external thread 12; the middle measuring rods have the same structure, and one end of each middle measuring rod is provided with an internal thread 13, and the other end of each middle measuring rod is provided with an external thread 14; one end of the top measuring rod is provided with an internal thread 15, and the other end is provided with a handle 16; the bottom measuring rod, the plurality of middle measuring rods and the top measuring rod are all stainless steel tubes.
The length (excluding the length of the external thread and the length of the handle) of the stainless steel tube of the bottom measuring rod, the plurality of middle measuring rods and the top measuring rod is 50cm, and the diameter of the stainless steel tube is 2 cm; the length of the external thread is 2cm, the diameter of the external thread is 1.4cm, and the internal thread is matched with the external thread; the handle 16 is 9cm in length and 3cm in diameter. The top end of the measuring rod handle 16 is provided with a circular level 17, and the diameter of the circular level 17 is 2 cm.
The electromagnetic flow velocity sensor comprises a sensor main body 21 and a tail 22, wherein the sensor main body 21 is fixedly connected with the tail 22.
The measuring tape 3 comprises a shell 31, a fixed ring 32, a rotating shaft 33, a limiting wafer 34, a rotating handle 35 and a graduated tape 36. The housing 31 is fixedly connected to the fixing ring 32, and the fixing ring 32 has a through hole 321 with threads for screwing the positioning screw 322 in, and abuts against the measuring rod, thereby fixing the measuring tape 3. The rotating shaft 33 is inserted from the center of the shell 31, and the two ends of the rotating shaft are limited by the round sheets 34, so that the rotating shaft 33 can only rotate around the central shaft and cannot move. The rotary handle 35 penetrates through a through hole in the circle center of the limiting wafer 34 to be fixedly connected with the rotating shaft 33, the scale tape 36 is wound on the rotating shaft 33 in the shell 31, and the scale tape 36 is stored and released through an opening 311 in the lowest portion of the shell 31 through rotation of the rotary handle 35.
The graduated tape 36 comprises a tape main body 361, a free end yellow metal sheet 362, a free end ring 363 and a buckle 364; the ring 363 is connected to the free end yellow metal piece 362 via a snap 364. The tape main body 361 is 1.5cm wide; the width of the free end yellow metal sheet 362 is 1.5cm, and the length is 2 cm; the outer diameter of the free end ring 363 is 2.8cm, the inner diameter is 2.4cm, and the height is 0.3 cm; the clip 364 is 0.5cm in diameter.
The working process is as follows: when measuring and calculating channel flow by using a current meter, sleeving an electromagnetic current sensor 2 at a preset position of a bottom measuring rod, screwing a positioning screw for fixing, sleeving a measuring tape fixing ring 32 and a measuring tape free end ring 363 on the measuring rod 1, selecting a measuring rod with a proper number of sections according to requirements for installation, moving a measuring tape 3 upwards to a specified position below a handle 16 of a top measuring rod, and screwing the positioning screw for fixing; one person holds the measuring rod 1 by hand and puts the current meter 2 into water, adjusts the measuring rod 1 to a vertical state through observing the circular level gauge 17 at the top end of the measuring rod 1, and emits the tape measure until the free end reaches the water surface, reads out the reading of the tape measure, and the other person takes the display instrument and records the reading of the display instrument and the reading of the tape measure according to a preset interval.
The above is only a preferred embodiment of the present invention, and it should be noted that: it will be apparent to those skilled in the art that the location of each facility can be adjusted without departing from the principles of the invention, and such adjustments should be considered within the scope of the invention.

Claims (7)

1. A depth-measurable current meter is characterized in that: the measuring device comprises a measuring rod (1), an electromagnetic flow velocity sensor (2) and a tape measure (3), wherein the measuring rod (1) is formed by connecting a plurality of pipe bodies end to end, the electromagnetic flow velocity sensor (2) is fixedly connected with the lower end of the measuring rod (1) in a sleeved mode, and the tape measure (3) is fixedly connected with the upper end of the measuring rod (1) in a sleeved mode; the measuring tape (3) comprises a shell (31), a fixed ring (32), a rotating shaft (33), a limiting wafer (34), a rotating handle (35) and a graduated tape (36); the shell (31) is fixedly connected with the fixed ring (32), and a threaded through hole (321) is formed in the fixed ring (32) and used for a positioning screw (322) to screw in to abut against the measuring rod (1), so that the measuring tape (3) is fixed; the rotating shaft (33) is inserted from the circle center of the shell (31), and the two ends of the rotating shaft are limited by the circular sheets (34) so that the rotating shaft (33) rotates around the central shaft; the rotary handle (35) penetrates through a through hole at the circle center of the limiting wafer (34) and is fixedly connected with the rotating shaft (33), the scale tape (36) is wound on the rotating shaft (33) in the shell (31), and the scale tape (36) is folded and unfolded through an opening (311) at the lowest part of the shell (31) through the rotation of the rotary handle (35); the scale tape (36) comprises a tape main body (361), a free end yellow metal sheet (362), a free end ring (363) and a buckle (364); the free end circular ring (363) is connected with the free end yellow metal sheet (362) through a buckle (364); the free end ring (363) is sleeved on the measuring rod (1), the measuring tape (3) is discharged from the fixed position to reach the water surface, the reading represents the distance from the water surface to the fixed position, and the difference between the distance from the bottom of the canal to the fixed position and the corresponding reading is the corresponding water depth.
2. A depth-measurable flow meter as claimed in claim 1, wherein: the measuring rod (1) is formed by connecting a plurality of stainless steel pipes through threads and comprises a bottom measuring rod, a plurality of middle measuring rods and a top measuring rod, wherein one end of the bottom measuring rod is a bottom measuring rod cone (11), and the other end of the bottom measuring rod is a bottom measuring rod external thread (12); the middle measuring rods have the same structure, and one end of each middle measuring rod is provided with an internal thread (13), and the other end of each middle measuring rod is provided with an external thread (14); one end of the top measuring rod is provided with an internal thread (15), and the other end is provided with a handle (16); the bottom measuring rod, the plurality of middle measuring rods and the top measuring rod are all stainless steel tubes.
3. A depth-measurable flow meter as claimed in claim 1, wherein: the top of the measuring rod (1) is provided with a measuring rod handle (16), and the top end of the measuring rod handle (16) is provided with a circular level gauge (17).
4. A depth-measurable flow meter as claimed in claim 1, wherein: the electromagnetic flow velocity sensor (2) comprises a sensor main body (21) and a tail wing (22), wherein the sensor main body (21) is fixedly connected with the tail wing (22).
5. A depth-measurable flow meter as claimed in claim 1, wherein: the width of the tape rule main body (361) is 1.5 cm; the width of the free end yellow metal sheet (362) is 1.5cm, and the length is 2 cm; the outer diameter of the free end ring (363) is 2.8cm, the inner diameter of the free end ring is 2.4cm, and the height of the free end ring is 0.3 cm; the diameter of the buckle (364) is 0.5 cm.
6. A depth-measurable flow meter according to claim 2, wherein: the length of the stainless steel tube of the bottom measuring rod, the plurality of middle measuring rods and the top measuring rod is 50cm, and the diameter of the stainless steel tube is 2 cm.
7. A depth-measurable flow meter according to claim 3, wherein: the length of the measuring rod handle (16) is 9cm, and the diameter of the measuring rod handle is 3 cm; the diameter of the circular level gauge (17) is 2 cm.
CN201911249813.3A 2019-12-09 2019-12-09 Depth-measurable current meter Active CN111024979B (en)

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Application Number Priority Date Filing Date Title
CN201911249813.3A CN111024979B (en) 2019-12-09 2019-12-09 Depth-measurable current meter

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Application Number Priority Date Filing Date Title
CN201911249813.3A CN111024979B (en) 2019-12-09 2019-12-09 Depth-measurable current meter

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CN111024979B true CN111024979B (en) 2021-06-25

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