CN110440869B - Water level detection device and method for hydraulic engineering management - Google Patents
Water level detection device and method for hydraulic engineering management Download PDFInfo
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- CN110440869B CN110440869B CN201910742423.3A CN201910742423A CN110440869B CN 110440869 B CN110440869 B CN 110440869B CN 201910742423 A CN201910742423 A CN 201910742423A CN 110440869 B CN110440869 B CN 110440869B
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- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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Abstract
The invention discloses a water level detection device for hydraulic engineering management, which comprises a fixed frame, wherein a first installation pipe is fixedly installed at the top of one side of the fixed frame, a fixed assembly is arranged at one end of the first installation pipe, and a second installation pipe is clamped on the fixed assembly. This water level detection device mount that hydraulic engineering management was used can be according to the demand that detects surface of water position and bank margin, the length of whole installation pipe is adjusted to quantity through setting up the second installation pipe, adapt to different demands, make the convenience more that detects, easy operation is convenient in the installation, and through placing the transmission line at first protection tube, inside connecting pipe and the second protection tube, and set up the protection casing with the outside of detecting head, can place the debris in the flowing water and block, collision prevention, level sensor's life has been prolonged, and can supply power to motor and level sensor through solar panel, energy-concerving and environment-protective.
Description
Technical Field
The invention relates to the technical field of hydraulic engineering auxiliary equipment, in particular to a water level detection device and method for hydraulic engineering management.
Background
Hydraulic engineering is a general term for various engineering constructions constructed for controlling, utilizing and protecting water resources and environments on the earth surface and underground, and is an engineering constructed for eliminating water damage and developing and utilizing water resources. The service objects are divided into flood control engineering, farmland hydraulic engineering, hydroelectric power engineering, channel and harbor engineering, water supply and drainage engineering, environmental hydraulic engineering, coastal reclamation engineering and the like. The hydraulic engineering which can serve multiple targets such as flood control, water supply, irrigation, power generation and the like at the same time is called comprehensive utilization hydraulic engineering.
Hydraulic engineering needs to carry out long-term detection to the water level of river course etc. and current detection device passes through fixed mounting on the river course limit, can only detect the water level on river course limit, uses relatively to limit to, and installs the trouble, and detection device exposes in aqueous, is scraped by the impurity in the rivers easily and bumps, damages.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a water level detection device and a water level detection method for hydraulic engineering management, which solve the problem that the existing detection device is fixedly arranged at the edge of a river channel, can only detect the water level at the edge of the river channel and is relatively limited in use.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a water level detection device for hydraulic engineering management comprises a fixing frame, wherein a first installation pipe is fixedly installed at the top of one side of the fixing frame, a fixing assembly is arranged at one end of the first installation pipe, a second installation pipe is clamped on the fixing assembly, a second fixing pipe is clamped at one end of the second installation pipe through the fixing assembly, an installation box is fixedly connected at one end of the second fixing pipe, a liquid level sensor is fixedly installed at the top of the installation box, the bottom end of the installation box is connected with a first protection pipe through an internal thread pipe thread, the bottom end of the first protection pipe is connected with a connecting pipe through a thread, a second protection pipe is connected at the bottom end of the connecting pipe through a thread, a protection cover is fixedly installed at the bottom end of the edge surface of the second protection pipe, a motor is fixedly installed at the left side of the installation box, and one end of an output shaft of the motor penetrates through the installation box, one end of the motor output shaft is fixedly connected with a rotating shaft, and a winding wheel is sleeved on the surface of the rotating shaft.
Further, level sensor includes detecting head, transmission line and demonstration part, the demonstration part pass through the flange with the top fixed mounting of mounting box, the detecting head is located the downside of second protection tube and the inside that is located the protection casing, the top of detecting head with the transmission line is connected, the one end of transmission line runs through second protection tube, connecting pipe, first protection tube and mounting box in proper order and extends to the inside of mounting box, the one end of transmission line twines on the winding wheel, just the one end of transmission line with the demonstration part is connected.
Further, the surface of transmission line just is located the bottom of the internal surface of second protection tube bonds and has the silica gel sealing washer, the one end of axis of rotation with one side of mounting box inner wall is rotated and is connected, the front of mounting box is provided with the chamber door.
Further, the top of first protective tube, connecting pipe and second protection tube all is provided with the external screw thread pipe, the bottom of first protective tube and connecting pipe internal surface all is provided with the internal thread with external screw thread pipe looks adaptation.
Further, fixed subassembly includes first fixed pipe, the annular opening has been seted up on the first fixed pipe, the top and the bottom of annular opening internal surface all communicate logical groove, it has the arc spacing groove to lead to one side intercommunication of inslot surface.
Furthermore, one side of the inner surface of the arc-shaped limiting groove is communicated with a groove, a moving block is connected between the top and the bottom of the inner surface of the groove in a sliding mode, a clamping block is fixedly connected to one side of the moving block, and one side of the clamping block is an arc-shaped surface.
Furthermore, the other side of the moving block is fixedly connected with an elastic piece, one end of the elastic piece is fixedly connected with one side of the inner surface of the groove, and the other side of the moving block, which is positioned inside the elastic piece, is fixedly connected with a driving rope.
Further, the one end of driving the rope runs through first fixed pipe through the spread groove and extends to the outside of first fixed pipe, the one end of driving the rope just is located the outside fixedly connected with spacing ring of first fixed pipe, the top of first fixed pipe and the equal fixedly connected with card axle in bottom.
Further, the front and the back of the surface of the second installation pipe and the second fixing pipe are fixedly connected with check blocks, a solar panel is fixedly installed at the top of the fixing frame, and clamping grooves are formed in one sides of the check blocks.
A water level detection method for hydraulic engineering management comprises the following steps:
s: selecting the number of second installation pipes to be installed according to the position of the river surface to be detected, installing the second installation pipes through the fixing assembly, and installing the installation boxes on the second installation pipes in the same way;
s: placing the detecting head at the bottom end of the mounting box in water, starting a motor, driving a rotating shaft to rotate by the motor, enabling a transmission line to move downwards, closing the motor after moving for a certain distance, connecting the transmission line with a display part, observing the depth of water displayed by the display part, disconnecting the transmission line from the display part, starting the motor, enabling the detecting head to continue to move downwards, then closing the motor again, enabling the transmission line to be connected with the display part, when the numerical value of the display part is found to be unchanged, namely the detecting head reaches the bottom of the river, and recording the depth of the bottom of the river through the display part;
s: taking the detecting head out of the water surface, selecting the number of connecting pipes according to the data recorded by the display part, connecting the plurality of connecting pipes with the first protecting pipe and the second protecting pipe, sequentially penetrating the detecting head through the first protecting pipe, the connecting pipes and the second protecting pipe to enable the detecting head to be positioned below the inner wall of the second protecting pipe, and positioning the silica gel sealing ring below the inner wall of the second protecting pipe;
s: carry out fixed connection with protection casing and second protection tube, then place it in aqueous to make first protection tube carry out fixed connection with the bottom of mounting box, then fix mount and river course limit.
(III) advantageous effects
The invention has the following beneficial effects:
the water level detection device and the method for hydraulic engineering management select the number of the second installation pipes according to the distance between the river channel position and the bank side, which is detected according to the needs, one end of the second installation pipe and two stop blocks are respectively and correspondingly inserted into the annular hole on the first fixed pipe and the two through grooves until the second installation pipe can not be inserted again, at the moment, the second installation pipe is rotated anticlockwise, the stop blocks are moved to the inner part of the arc limiting groove, the second installation pipe is limited by the stop blocks and the arc limiting groove, the arc surfaces of the clamping blocks are extruded when the stop blocks move into the arc limiting groove, the clamping grooves are extruded by the elastic pieces through the movable blocks to enter the grooves, when the stop blocks rotate to the inner part of the clamping grooves, the clamping grooves correspond to the positions of the clamping blocks, the stop blocks are ejected into the clamping grooves under the action of the elastic pieces, the stop blocks are prevented from rotating randomly under the action of the elastic pieces, the installation is simple, the installation box is fixedly connected with the second installation pipe through the second fixing pipe in the same way, the installation is simple and convenient, in the disassembly process, the limiting ring is pulled to drive the moving block through the driving rope, the limiting ring drives the clamping block to move out of the clamping groove and enter the groove, then the limiting ring is placed on the clamping shaft to limit the limiting ring, then the limiting ring rotates clockwise until the limiting ring cannot rotate, the stop block moves to the inside of the through groove, and then the limiting ring is disassembled, the operation is simple, the fixing frame can adjust the length of the whole installation pipe through the number of the second installation pipes according to the requirement of detecting the distance between the water surface position and the bank edge to adapt to different requirements, the detection is more convenient, the installation and the disassembly operations are simple and convenient, in addition, the transmission line is placed inside the first protection pipe, the connecting pipe and the second protection pipe, and the protection cover is arranged outside the detection head, so that sundries in the, the collision is prevented, the service life of the liquid level sensor is prolonged, the motor and the liquid level sensor can be powered through the solar panel, and the solar liquid level sensor is energy-saving and environment-friendly.
Of course, it is not necessary for any product to practice the invention to achieve all of the above-described advantages simultaneously
Drawings
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a partial cross-sectional view of the present invention;
FIG. 3 is a cross-sectional view of the fixing assembly of the present invention;
FIG. 4 is a side view of the fixing assembly of the present invention;
FIG. 5 is a schematic structural diagram of a fixture block according to the present invention;
in the figure, 1-a fixed frame, 2-a first installation pipe, 3-a fixed component, 31-a first fixed pipe, 32-a circular hole, 33-an arc-shaped limit groove, 34-a groove, 35-a moving block, 36-a fixture block, 37-an elastic element, 38-a driving rope, 39-a limit ring, 310-a connection groove, 311-a clamping shaft, 312-a through groove, 4-a second installation pipe, 5-a second fixed pipe, 6-an installation box, 7-a liquid level sensor, 71-a probe head, 72-a transmission line, 73-a display part, 8-a motor, 9-an internal threaded pipe, 10-a first protection pipe, 11-a connection pipe, 12-a second protection pipe, 13-a protection cover, 14-a rotating shaft, 15-a winding wheel, 16-stop block, 17-external thread pipe, 18-silica gel sealing ring, 19-solar panel, 20 and clamping groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: a water level detection device for hydraulic engineering management comprises a fixing frame 1, wherein a first installation pipe 2 is fixedly installed at the top of one side of the fixing frame 1, a fixing component 3 is arranged at one end of the first installation pipe 2, a second installation pipe 4 is clamped on the fixing component 3, a second fixing pipe 5 is clamped at one end of the second installation pipe 4 through the fixing component 3, the fixing component 4 is also arranged at one end of the second installation pipe 4, an installation box 6 is fixedly connected to one end of the second fixing pipe 5, a liquid level sensor 7 is fixedly installed at the top of the installation box 6, the type of the liquid level sensor 7 is CYW11, a first protection pipe 10 is in threaded connection with the bottom end of the installation box 6 through an internal thread pipe 9, a connecting pipe 11 is in threaded connection with the bottom end of the first protection pipe 10, and a second protection pipe 12 is in threaded connection with the bottom end of the connecting pipe 11, the bottom fixed mounting on the limit surface of second protection tube 12 has protection casing 13, has seted up a plurality of bar holes on the protection casing 13, the left side fixed mounting of mounting box 6 has motor 8, and motor 8's output shaft can just reverse, the one end of motor 8 output shaft runs through mounting box 6 and extends to the inside of mounting box 6, the one end fixedly connected with axis of rotation 14 of motor 8 output shaft, the surface cover of axis of rotation 14 is equipped with winding wheel 15.
The liquid level sensor 7 comprises a detection head 71, a transmission line 72 and a display part 73, wherein the transmission line 72 and the display part 73 can be detached, the display part 73 is fixedly mounted at the top of the mounting box 6 through a flange, the detection head 71 is positioned at the lower side of the second protection tube 12 and inside the protective cover 13, the top end of the detection head 71 is connected with the transmission line 72, one end of the transmission line 72 sequentially penetrates through the second protection tube 12, the connecting tube 11, the first protection tube 10 and the mounting box 6 and extends to the inside of the mounting box 6, one end of the transmission line 72 is wound on a winding wheel 15, and one end of the transmission line 72 is connected with the display part 73.
The surface of transmission line 72 just is located the bottom of the internal surface of second protection tube 12 bonds and has silica gel sealing washer 18, and silica gel sealing washer 18 can be placed inside getting into second protection tube 12, can prevent that transmission line 72 from soaking in aqueous for a long time, the one end of axis of rotation 14 with one side of mounting box 6 inner wall is rotated and is connected, the front of mounting box 6 is provided with the chamber door.
The top of first protective tube 10, connecting pipe 11 and second protective tube 12 all is provided with external screw thread pipe 17, the bottom of first protective tube 10 and connecting pipe 11 internal surface all is provided with the internal thread with external screw thread pipe 17 looks adaptation, and first protective tube 10, connecting pipe 11 and second protective tube 12 are the stereoplasm plastic tubing.
The fixing component 3 comprises a first fixing pipe 31, an annular hole 32 is formed in the first fixing pipe 31, the top and the bottom of the inner surface of the annular hole 32 are communicated with a through groove 312, and one side of the inner surface of the through groove 312 is communicated with an arc-shaped limiting groove 33.
One side of the inner surface of the arc-shaped limiting groove 33 is communicated with a groove 34, a moving block 35 is connected between the top and the bottom of the inner surface of the groove 34 in a sliding manner, a clamping block 36 is fixedly connected to one side of the moving block 35, and an arc-shaped surface is arranged on one side of the clamping block 36.
An elastic member 37 is fixedly connected to the other side of the moving block 35, one end of the elastic member 37 is fixedly connected to one side of the inner surface of the groove 34, and a driving rope 38 is fixedly connected to the other side of the moving block 35 and located inside the elastic member 37.
The one end of driving rope 38 runs through first fixed pipe 31 and extends to through connecting groove 310 the outside of first fixed pipe 31, and the corner of connecting groove 310 internal surface all sets up to smooth arc, reduces and drives the friction between the rope 38, the one end of driving rope 38 just is located the outside fixedly connected with spacing ring 39 of first fixed pipe 31, the top of first fixed pipe 31 and the equal fixedly connected with card axle 311 in bottom.
The front and the equal fixedly connected with dog 16 in the back on second installation pipe 4 and the fixed 5 surfaces of second, the top fixed mounting of mount 1 has solar panel 19, and solar panel 19 turns into the electric energy with light energy, saves the electricity consumption at the inside power supply motor 8 of battery and level sensor 7, draw-in groove 20 has been seted up to one side of dog 16, the size of draw-in groove 20 and the big or small looks adaptation of fixture block 36.
A water level detection method for hydraulic engineering management comprises the following steps:
s1: selecting the number of the second installation pipes 4 to be installed according to the position of the river surface to be detected, installing the second installation pipes 4 through the fixing assembly 3, and then installing the installation box 6 on the second installation pipes 4 in the same way;
s2: placing the probe 71 at the bottom end of the mounting box 6 in water, starting the motor 8, driving the rotating shaft 14 to rotate by the motor 8, enabling the transmission line 72 to move downwards, after moving for a certain distance, closing the motor 8, connecting the transmission line 72 with the display part 73, observing the water depth displayed by the display part 73, then disconnecting the transmission line 72 from the display part 73, starting the motor 8, enabling the probe to continue moving downwards, then closing the motor 8 again, enabling the transmission line 72 to be connected with the display part 73, when the numerical value of the display part 73 is not changed, namely the probe 71 reaches the river bottom, and recording the depth of the river bottom at the moment through the display part 73;
s3: taking the probe out of the water surface, selecting the number of connecting pipes 11 according to the data recorded by the display part 73, connecting a plurality of connecting pipes 11, connecting the connecting pipes with the first protecting pipe 10 and the second protecting pipe 12, sequentially penetrating the probe 71 through the first protecting pipe 10, the connecting pipes 11 and the second protecting pipe 12, and enabling the probe 71 to be positioned below the inner part of the second protecting pipe 12, and enabling the silica gel sealing ring 18 to be positioned below the inner wall of the second protecting pipe 12;
s4: carry out fixed connection with protection casing 13 and second protection tube 12, then place it in aqueous to make first protection tube 10 carry out fixed connection with the bottom of mounting box 6, then fix mount 1 and river course limit, the bottom of mount 1 is fixed through cement and river course limit, also can use other fixed methods.
When the device is used, the number of the second installation pipes 4 is selected according to the distance between the river position and the bank side, which is required to be detected, one end of each second installation pipe 4 and the two stop blocks 16 are respectively and correspondingly inserted into the annular hole 32 and the two through grooves 312 on the first fixed pipe 31 until the second installation pipes can not be inserted again, at the moment, the second installation pipes 4 are rotated anticlockwise, the stop blocks 16 are moved into the arc-shaped limiting grooves 33, the second installation pipes 4 are limited through the stop blocks 16 and the arc-shaped limiting grooves 33, the arc-shaped surfaces of the fixture blocks 36 are extruded when the stop blocks 16 are moved into the arc-shaped limiting grooves 33, the fixture blocks 36 extrude the elastic pieces 37 to enter the grooves 34 through the movable blocks 35, when the stop blocks 16 are rotated to be incapable of rotating again, the clamp grooves 20 correspond to the fixture blocks 36, the fixture blocks are ejected into the clamp grooves 20 through the action of the elastic pieces 37, and the stop blocks 16 are prevented from rotating randomly, the fixing is more stable, the installation is simple, the installation box 6 is fixedly connected with the second installation pipe 4 through the second fixing pipe 5 in the same way, the installation is simple and convenient, in the disassembly process, the limiting ring 39 is pulled, the limiting ring 39 drives the moving block 35 through the driving rope 38 to drive the clamping block 36 to move out of the clamping groove 20 and enter the groove 34, then the limiting ring 39 is placed on the clamping shaft 311 to limit the clamping shaft, then the clamping shaft is rotated clockwise to be incapable of rotating, the baffle 16 is moved into the through groove 312, and then the baffle can be disassembled.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. The water level detection method for hydraulic engineering management is characterized by comprising the following steps of:
s1: selecting the number of the second installation pipes (4) to be installed according to the position of the river surface to be detected, installing the second installation pipes (4) through the fixing component (3), and then installing the installation box (6) on the second installation pipes (4) in the same way;
s2: placing a detecting head (71) at the bottom end of a mounting box (6) in water, starting a motor (8), driving a rotating shaft (14) to rotate by the motor (8), enabling a transmission line (73) to move downwards, after moving for a certain distance, closing the motor (8), connecting the transmission line (72) with a display part (73), observing the water depth displayed by the display part (73), disconnecting the transmission line (72) with the display part (73), starting the motor (8), enabling the detecting head to continue to move downwards, then closing the motor (8) again, enabling the transmission line (72) to be connected with the display part (73), and when the numerical value of the display part (73) is not changed, namely the detecting head (71) reaches the river bottom, recording the depth of the river bottom at the moment through the display part (73);
s3: the detection head is taken out of the water surface, the number of the connecting pipes (11) is selected according to the data recorded by the display part (73), the connecting pipes (11) are connected, then the first protection pipe (10) and the second protection pipe (12) are connected, then the detection head (71) sequentially penetrates through the first protection pipe (10), the connecting pipes (11) and the second protection pipe (12), the detection head (71) is located below the inner part of the second protection pipe (12), and the silica gel sealing ring (18) is located below the inner wall of the second protection pipe (12);
s4: fixedly connecting a protective cover 13 with a second protective pipe (13), then placing the protective cover in water, fixedly connecting a first protective pipe (10) with the bottom of a mounting box (6), and then fixing a fixing frame (1) with the edge of a river channel;
the water level detection device for the hydraulic engineering management comprises a fixing frame (1), wherein a first installation pipe (2) is fixedly installed at the top of one side of the fixing frame (1), a fixing component (3) is arranged at one end of the first installation pipe (2), a second installation pipe (4) is connected to the fixing component (3) in a clamping mode, a second fixing pipe (5) is connected to one end of the second installation pipe (4) in a clamping mode through the fixing component (3), an installation box (6) is fixedly connected to one end of the second fixing pipe (5), a liquid level sensor (7) is fixedly installed at the top of the installation box (6), a first protection pipe (10) is connected to the bottom end of the installation box (6) through an internal thread pipe (9) in a threaded mode, a connecting pipe (11) is connected to the bottom end of the first protection pipe (10) in a threaded mode, and a second protection pipe (12) is connected to the bottom end of the, a protective cover (13) is fixedly mounted at the bottom end of the edge surface of the second protective pipe (12), a motor (8) is fixedly mounted on the left side of the mounting box (6), one end of an output shaft of the motor (8) penetrates through the mounting box (6) and extends into the mounting box (6), one end of the output shaft of the motor (8) is fixedly connected with a rotating shaft (14), and a winding wheel (15) is sleeved on the surface of the rotating shaft (14);
the fixing component (3) comprises a first fixing pipe (31), an annular hole (32) is formed in the first fixing pipe (31), the top and the bottom of the inner surface of the annular hole (32) are communicated with a through groove (312), and one side of the inner surface of the through groove (312) is communicated with an arc-shaped limiting groove (33);
one side of the inner surface of the arc-shaped limiting groove (33) is communicated with a groove (34), a moving block (35) is connected between the top and the bottom of the inner surface of the groove (34) in a sliding manner, a clamping block (36) is fixedly connected to one side of the moving block (35), and one side of the clamping block (36) is set to be an arc-shaped surface;
an elastic piece (37) is fixedly connected to the other side of the moving block (35), one end of the elastic piece (37) is fixedly connected with one side of the inner surface of the groove (34), and a driving rope (38) is fixedly connected to the other side of the moving block (35) and located inside the elastic piece (37);
the one end of drive rope (38) runs through first fixed pipe (31) and extends to through connecting groove (310) the outside of first fixed pipe (31), the one end of drive rope (38) just is located the outside fixedly connected with spacing ring (39) of first fixed pipe (31), the top and the equal fixedly connected with card axle (311) in bottom of first fixed pipe (31).
2. The water level detection method for hydraulic engineering management according to claim 1, wherein: level sensor (7) include detecting head (71), transmission line (72) and display portion (73), display portion (73) pass through the flange with the top fixed mounting of mounting box (6), detecting head (71) are located the downside of second protection tube (12) and are located the inside of protection casing (13), the top of detecting head (71) with transmission line (72) are connected, the one end of transmission line (72) runs through second protection tube (12), connecting pipe (11), first protection tube (10) and mounting box (6) in proper order and extend to the inside of mounting box (6), the one end of transmission line (72) is twined on winding wheel (15), just the one end of transmission line (72) with display portion (73) are connected.
3. The water level detection method for hydraulic engineering management according to claim 1, wherein: the surface of transmission line (72) just is located the bottom of the internal surface of second protection tube (12) bonds and has silica gel sealing washer (18), the one end of axis of rotation (14) with one side of mounting box (6) inner wall is rotated and is connected, the front of mounting box (6) is provided with the chamber door.
4. The water level detection method for hydraulic engineering management according to claim 1, wherein: the top of first protective tube (10), connecting pipe (11) and second protective tube (12) all is provided with external screw thread pipe (17), the bottom of first protective tube (10) and connecting pipe (11) internal surface all is provided with the internal thread with external screw thread pipe (17) looks adaptation.
5. The water level detection method for hydraulic engineering management according to claim 1, wherein: the fixed pipe of second (5) surface front and the equal fixedly connected with dog (16) in the back are managed (4) and second installation, the top fixed mounting of mount (1) has solar panel (19), draw-in groove (20) have been seted up to one side of dog (16).
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