Hydrological flow measuring device for hydrogeological engineering

Abstract

The application provides a hydrological flow measuring device for hydrogeological engineering, and belongs to the technical field of hydrological flow measurement. The device comprises a base, a plurality of splicing rods are screw-connected to the top of the base, a tail wing is inserted into the splicing rod, an installation frame is fixedly connected to the end of the tail wing, a first rotating shaft is rotatably connected to the end of the installation frame, and a rotor is fixedly connected to the outer wall of the first rotating shaft. The first brake mechanism and the second brake mechanism are arranged, the consistency of the rotating time of all rotors is ensured, the precision of the device in measuring fluid flow is improved, the operator can let the rotor self-rotate by pressing the first operating rod when the device is used, the influence of mechanical inertia on the rotor is avoided, the time required for starting the rotor is greatly shortened, and the precision of the device in measurement is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrological flow measurement, and particularly relates to a hydrological flow measurement device for hydrogeological engineering. BACKGROUND

[0002] Hydrological flow measurement is one of the most core work in hydrology and water resources management, and the purpose is to accurately measure the flow of rivers, channels and other water bodies. At present, the contact measurement method is the traditional and basic flow measurement method, and a rotor type flow measurement instrument is generally used for measurement work.

[0003] The rotor type flow measurement instrument mainly comprises a rotor, a tail wing, a frame body and a signal generating mechanism. When in use, the measurement instrument is placed in the water flow, the water flow will impact the rotor to rotate, and the rotor will generate a pulse signal every certain number of rotations. The rotation speed of the rotor can be calculated by recording the number of signals generated in a certain time, and then the flow of the water flow can be calculated through a formula.

[0004] In order to obtain more accurate measurement values, the measurement instrument is generally used to measure the fluid at different depths, so that multiple rotors with different heights are arranged on the measurement instrument. However, the distribution of silt, garbage and suspended matter in the river at different depths is very complex. The garbage and suspended matter with small density are mainly distributed in the upper layer of the river, and the silt, organic debris and phytoplankton with large density are mainly distributed in the lower layer of the river. These garbage, silt and phytoplankton are easy to entangle the rotor of the measurement instrument, which leads to measurement failure or data error, and affects the detection efficiency of the measurement instrument. In addition, when the operator puts the measurement instrument into the water, the rotor at the bottom of the measurement instrument will rotate first under the action of the water flow, which leads to the non-uniform rotation time of the rotors on the measurement instrument, affects the accuracy of the measurement data, and the rotor needs time to start and stop due to the influence of mechanical inertia, and the response to the instantaneous flow rate change is slow, which also affects the accuracy of the measurement data. Therefore, in order to improve the accuracy of the measurement data of the measurement instrument and the efficiency of the use of the measurement instrument, the present application provides a hydrological flow measurement device for hydrogeological engineering to meet the needs. SUMMARY

[0005] The technical problem solved by the present application is to provide a hydrological flow measuring device for hydrogeological engineering, which ensures the consistency of the rotation time of all rotors, improves the precision of the device in measuring fluid flow, and the operator can make the rotor self-rotate by pressing the first operating rod during use of the device, thereby avoiding the influence of mechanical inertia on the rotor, greatly shortening the time required for starting the rotor, improving the precision of the device, and the operator can expand the two enclosures by pressing the second operating rod during use of the device, which can strip the garbage and phytoplankton around the rotor during the expansion of the enclosure, avoiding the garbage and phytoplankton from winding around the rotor and affecting the normal use of the device, and the elastic wire can isolate and block the garbage and phytoplankton after the expansion of the enclosure, avoiding the garbage and phytoplankton from winding around the rotor and affecting the measuring efficiency of the device, and the above settings can solve the problems of inaccurate measurement data and low measuring efficiency of the rotor type flow measuring instrument at the present stage.

[0006] To solve the above technical problems, the present application provides the following technical solutions:

[0007] A hydrological flow measuring device for hydrogeological engineering, comprising a base, a plurality of splicing rods are screwed on the top of the base, the splicing rods are sequentially screwed together at the tail, a tail fin is inserted into the splicing rod, a positioning cylinder is fixedly connected to the tail fin, an installation frame is fixedly connected to the end of the tail fin, the installation frame has a "C" shape profile, a first rotating shaft is rotatably connected to the end of the installation frame, a rotor is fixedly connected to the outer wall of the first rotating shaft, a signal generating mechanism is installed at the bottom of the rotor, and a clamping plate is fixedly connected to the outer wall of the splicing rod; a first brake mechanism is used to drive the rotor to rotate, and the first brake mechanism is connected to the clamping plate, the installation frame and the first rotating shaft; a second brake mechanism is used to isolate and protect the rotor, and the second brake mechanism is connected to the clamping plate and the positioning cylinder.

[0008] Optionally, the first brake mechanism comprises a first operating rod inserted into the clamping plate, a first pressing seat is fixedly connected to the outer wall of the first operating rod, a slide column is fixedly connected to the end of the first pressing seat away from the first operating rod, a drive shaft is fixedly connected to the bottom of the slide column, the first brake mechanism further comprises a mounting seat fixedly connected to the top of the installation frame, a limiting cylinder is screwed to the top end of the mounting seat, a limiting groove with a size matching that of the first pressing seat is formed in the limiting cylinder, and the first brake mechanism further comprises a brake cavity formed in the top end of the first rotating shaft.

[0009] Optionally, the brake cavity is composed of two chambers, wherein the size of the top chamber is smaller than that of the bottom chamber, the size of the top chamber is matched with the size of the driving shaft, and the length of the bottom chamber is greater than the length of the driving shaft.

[0010] Optionally, a plurality of driving grooves are formed on the outer wall of the driving shaft, the driving grooves extend in a spiral track from one end of the driving shaft to the other end of the driving shaft, and a driving block matched with the size of the driving grooves is fixedly connected to the inner wall of the top of the brake cavity.

[0011] Optionally, a rubber head is fixedly connected to the bottom end of the driving shaft, anti-skid lines are arranged on the outer wall of the rubber head, an adaptive groove matched with the profile of the rubber head is formed in the first rotating shaft, the adaptive groove is located at the bottom of the brake cavity, and the cross-sectional profile of the rubber head is conical.

[0012] Optionally, the second brake mechanism comprises a second operating rod inserted into the clamping plate, a second pressing seat is fixedly connected to the outer wall of the second operating rod, the second brake mechanism further comprises a second rotating shaft fixedly connected to the positioning cylinder, and two enclosures are rotatably connected to the outer wall of the second rotating shaft.

[0013] Optionally, the second pressing seat is composed of a bottom cone and a top cylinder, and a conical groove corresponding to the position of the second pressing seat is formed in each of the two enclosures.

[0014] Optionally, the enclosure has a semicircular profile, the two enclosures form a complete cylindrical body, and the inner circumferential size of the cylindrical body formed by the two enclosures is greater than the outer circumferential size of the rotor.

[0015] Optionally, a guide plate is fixedly connected to the end of the enclosure away from the positioning cylinder, and the guide plate has an arc profile protruding outward.

[0016] Optionally, an elastic wire is fixedly connected to the outer wall of the enclosure, both ends of the elastic wire are spiral twisted metal wires, and the middle part of the elastic wire is a straight metal wire, both ends of the elastic wire are fixed to the outer walls of the two enclosures respectively, and a groove corresponding to the position of the elastic wire is formed in the guide plate.

[0017] Compared with the prior art, the present application has at least the following beneficial effects:

[0018] In the above scheme, by setting the first brake mechanism and the second brake mechanism, the rotor at the bottom of the device will not be impacted by the fluid and rotate first during the process of putting the device into the fluid to be measured, ensuring the consistency of the rotation time of all rotors and improving the accuracy of the device in measuring the fluid flow; When the device is in use, the operator can make the rotor self-rotate by pressing the first operating rod, thereby avoiding the influence of mechanical inertia on the rotor, greatly shortening the time required for the rotor to start, improving the accuracy of the device in measurement, and the speed of the rotor rotation depends on the force and speed of the operator pressing the first operating rod, the greater the force and speed, the greater the speed of the rotor rotation; When the device is in use, the operator can make the two enclosures unfold by pressing the second operating rod, and the garbage and phytoplankton around the rotor can be stripped during the unfolding process of the enclosures, avoiding the garbage and phytoplankton from winding around the rotor and affecting the normal use of the device, and after the enclosures are unfolded, the elastic wire is wrapped outside the enclosures, when the garbage and phytoplankton float towards the rotor along the direction of the fluid flow, the elastic wire can isolate and block the garbage and phytoplankton, avoiding the garbage and phytoplankton from winding around the rotor and affecting the measurement efficiency of the device. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the application and, together with the description, further serve to explain the principles of the application and to enable a person skilled in the relevant arts to make and use the application.

[0020] Figure 1 It is a three-dimensional structure schematic diagram of the hydrological flow measuring device for hydrogeological engineering;

[0021] Figure 2 It is a three-dimensional structure schematic diagram of the base, splicing rod, tail wing, mounting frame and rotor cooperating with the first perspective view;

[0022] Figure 3 It is a three-dimensional structure schematic diagram of the base, splicing rod, tail wing, mounting frame and rotor cooperating with the second perspective view;

[0023] Figure 4 It is a three-dimensional structure schematic diagram of the first brake mechanism, splicing rod and rotor cooperating with the first perspective view;

[0024] Figure 5 It is a three-dimensional structure schematic diagram of the first brake mechanism, splicing rod and rotor cooperating with the second perspective view;

[0025] Figure 6 It is a three-dimensional structure schematic diagram of the first brake mechanism, splicing rod and rotor cooperating with the sectional view;

[0026] Figure 7 It is Figure 6 It is an enlarged structure schematic diagram of position A in the middle;

[0027] Figure 8 It is the first brake mechanism, splice rod and rotor matching explosion perspective structure schematic diagram;

[0028] Figure 9 It is Figure 8 It is the enlarged structure schematic diagram at B;

[0029] Figure 10 It is the first lower pressing seat, slide column, drive shaft and rubber head matching enlarged perspective structure schematic diagram;

[0030] Figure 11 It is the second brake mechanism, splice rod and rotor matching first perspective structure schematic diagram;

[0031] Figure 12 It is the second brake mechanism matching enlarged perspective structure schematic diagram;

[0032] Figure 13 It is the splice rod, first operating rod, second operating rod and clamping plate matching perspective structure schematic diagram;

[0033] Figure 14 It is the clamping plate enlarged perspective structure schematic diagram.

[0034] Reference signs:

[0035] 1, base; 2, splice rod; 3, tail wing; 4, positioning cylinder; 5, mounting frame; 6, first rotating shaft; 7, rotor; 8, signal generating mechanism; 9, first operating rod; 10, first lower pressing seat; 11, slide column; 12, drive shaft; 13, drive groove; 14, rubber head; 15, mounting seat; 16, limiting cylinder; 17, limiting groove; 18, brake cavity; 19, adaptive groove; 20, drive block; 21, second operating rod; 22, second lower pressing seat; 23, fence; 24, conical groove; 25, second rotating shaft; 26, guide plate; 27, elastic wire; 28, clamping plate.

[0036] As shown in the drawings, in order to clearly realize the structure of the embodiments of the present application, specific structures and devices are marked in the drawings, but this is only for the need of illustration, and is not intended to limit the present application in this specific structure, device and environment. According to specific needs, those skilled in the art can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0037] A hydrological flow measuring device for hydrogeological engineering is described in detail below in combination with the drawings and specific embodiments. It is noted here that in order to make the embodiments more detailed, the following embodiments are the best, preferred embodiments, and other alternative ways can also be used by those skilled in the art to implement some known technologies; and the drawings are only used to more specifically describe the embodiments, and are not intended to specifically limit the present application.

[0038] It is to be appreciated that a reference to one or an item can be a reference to one or more such items. For example, a reference to one component or step can mean that there is one component or one step or a combination thereof. Further, as used herein, a structure, material, or combined structure and material can be described as tolerating or operating over a range of values. Such a range can include any number of individual values within the overall range, even if such values are not expressly identified herein. Further, as used herein, a structure, material, or combined structure and material can be described as having a range of values. Such a range can include any number of individual values within the overall range, even if such values are not expressly identified herein.

[0039] In general, terminology can be understood at least in part from a context of a particular application. For example, terminology used for describing certain features, structures, or characteristics can be used consistently throughout a description set forth herein and across various embodiments. However, such terminology is used herein only in a general context and corresponding detailed terms can be described elsewhere.

[0040] It will be understood that the terms "on," "over," and "above," as used herein, should be interpreted in the broadest context possible so that "on" not only means "directly on" something but also includes the meaning of being "on" something with intervening features or layers therebetween, and "over" or "above" not only means "over" or "above" something but also can include the meaning of being "over" or "above" something with no intervening features or layers therebetween.

[0041] In addition, spatially relative terms, such as "under," "below," "lower," "over," "upper," and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0042] As Figures 1 to 3 , Figure 13 and Figure 14As shown, the embodiment of the present application provides a hydrological flow measuring device for hydrogeological engineering, which comprises a base 1, a plurality of splicing rods 2 are screwed on the top of the base 1, the plurality of splicing rods 2 are screwed together in sequence, a tail fin 3 is inserted in the splicing rod 2, a positioning cylinder 4 is fixedly connected to the tail fin 3, an installation frame 5 is fixedly connected to the end of the tail fin 3, the installation frame 5 is in the shape of "C", a first rotating shaft 6 is rotatably connected to the end of the installation frame 5, a rotor 7 is fixedly connected to the outer wall of the first rotating shaft 6, a signal generating mechanism 8 is installed at the bottom of the rotor 7, and a clamping plate 28 is fixedly connected to the outer wall of the splicing rod 2.

[0043] In the technical solution, the splicing rods 2 are spliced together in sequence by threads, and the operator can selectively splice the splicing rods 2 according to the depth of the fluid to be measured, so as to adjust the height of the rotor 7 suitable for different depths of rivers; the signal generating mechanism 8 is used for receiving and recording the pulse signals emitted by the rotor 7 rotating a certain number of turns within a certain time, so as to facilitate the later workers to calculate the flow of the fluid according to the formula, and the working principle of the rotor 7 and the signal generating mechanism 8 is disclosed as prior art, which will not be repeated here.

[0044] As an embodiment in the present embodiment, as shown in Figures 1 to 10 , Figure 13 and Figure 14 , the first brake mechanism is used for driving the rotor 7 to rotate, and the first brake mechanism is connected with the clamping plate 28, the installation frame 5 and the first rotating shaft 6 respectively, the first brake mechanism comprises a first operating rod 9 inserted in the clamping plate 28, a first pressing seat 10 is fixedly connected to the outer wall of the first operating rod 9, a slide column 11 is fixedly connected to the end of the first pressing seat 10 away from the first operating rod 9, a driving shaft 12 is fixedly connected to the bottom of the slide column 11, the first brake mechanism further comprises a mounting seat 15 fixedly connected to the top of the installation frame 5, a limiting cylinder 16 is screwed on the top end of the mounting seat 15, and a limiting groove 17 is formed in the limiting cylinder 16 and matched with the size of the first pressing seat 10.

[0045] In the structure, the first operating rod 9 is inserted into the clamping plate 28 and fixed to the clamping plate 28 by a screw, and the first lower pressing seat 10 is sleeved on the outer wall of the first operating rod 9 and fixed to the first operating rod 9 by a screw. Such a setting allows an operator to adjust and fix the relative height between the first operating rod 9 and the splicing rod 2 and the relative height between the first lower pressing seat 10 and the first operating rod 9 by screwing the screw. Similarly, such a setting can facilitate the operator to install and disassemble the first operating rod 9 and the first lower pressing seat 10. When the first lower pressing seat 10 and the first operating rod 9 are fixed together, the screw on the first operating rod 9 and the clamping plate 28 is loosened, and the first operating rod 9 is pressed down to drive the first lower pressing seat 10 to move downward. Since the first operating rod 9 is inserted into the clamping plate 28, the clamping plate 28 can limit the first operating rod 9 when the first operating rod 9 slides in the clamping plate 28, preventing the first operating rod 9 from being dislocated or separated.

[0046] Further, the limiting cylinder 16 is fixed to the top of the mounting frame 5 by the mounting seat 15, the inner circumference of the limiting cylinder 16 is matched with the outer circumference of the sliding column 11 in size, and the limiting groove 17 for limiting the sliding of the first lower pressing seat 10 is formed in the limiting cylinder 16. Such a setting allows the sliding column 11 to slide up and down in the limiting cylinder 16 when the first lower pressing seat 10 extends up and down.

[0047] It is worth mentioning that the splicing rod 2 at the top is in the shape of “L”, and the top of the first operating rod 9 is also in the shape of “L”. When the operator needs to press down the first operating rod 9, the operator holds the curved parts of the first operating rod 9 and the splicing rod 2 with hands, and then bends the fingers to drive the first operating rod 9 to move downward. When the operator needs to pull up the first operating rod 9, the operator can also exert force on the curved parts of the splicing rod 2 and the signal generating mechanism 8, which improves the convenience of the operator to operate the first operating rod 9 to move up and down.

[0048] In the embodiment, as Figures 1 to 10 , Figure 13 and Figure 14As shown, the first brake mechanism further comprises a brake cavity 18 formed in the top end of the first rotating shaft 6, the brake cavity 18 is composed of two chambers, the size of the top chamber is smaller than that of the bottom chamber, the size of the top chamber is matched with the size of the drive shaft 12, and the length of the bottom chamber is greater than the length of the drive shaft 12, a plurality of drive grooves 13 are formed in the outer wall of the drive shaft 12, the drive grooves 13 extend from one end of the drive shaft 12 to the other end of the drive shaft 12 in a spiral track, a drive block 20 matched with the size of the drive grooves 13 is fixedly connected to the inner wall of the top of the brake cavity 18, and a rubber head 14 is inserted and fixed at the bottom end of the drive shaft 12, the outer wall of the rubber head 14 is provided with anti-skid lines, the first rotating shaft 6 is provided with an adaptive groove 19 matched with the contour of the rubber head 14, and the adaptive groove 19 is located at the bottom of the brake cavity 18. The cross-sectional contour of the rubber head 14 is conical.

[0049] In the above structure, the drive shaft 12 is located at the top of the first rotating shaft 6 in the initial state, and the drive grooves 13 are matched with the drive block 20, when the slide column 11 slides towards the bottom of the limiting cylinder 16, the drive shaft 12 slides towards the bottom of the limiting cylinder 16 together with the slide column 11, and the drive block 20 slides along the track of the drive grooves 13 under the cooperation of the drive grooves 13 and the drive block 20, since the track of the drive grooves 13 is spiral, the drive block 20 rotates around the surface of the drive shaft 12, through the above structure, the drive shaft 12 rotates around the surface of the drive shaft 12 during the movement towards the bottom of the limiting cylinder 16, which drives the drive block 20 to rotate around the surface of the drive shaft 12, thereby driving the first rotating shaft 6 to rotate, and the rotor 7 rotates during the rotation of the first rotating shaft 6, so that the operator can manually control the rotation of the rotor 7, the speed of the rotor 7 depends on the force and speed of the operator pressing the first operating rod 9, the greater the force and speed, the greater the speed of the rotor 7, thereby avoiding the influence of mechanical inertia on the rotor 7, greatly shortening the time required for starting the rotor 7, and improving the accuracy of the measurement of the device.

[0050] Further, since the brake cavity 18 is composed of two chambers, the size of the top chamber is matched with the size of the drive shaft 12, and the size of the bottom chamber is greater than that of the top chamber, when the drive shaft 12 slides into the bottom chamber of the brake cavity 18, the drive block 20 cannot continue to cooperate with the drive grooves 13, at this time, the drive shaft 12 will not interfere with the rotation of the first rotating shaft 6, and the rotor 7 will freely rotate under the impact of the water flow.

[0051] Further, when the detection work is finished and the rotor 7 needs to be stopped, the operator presses the first operating rod 9, at this time, the driving shaft 12 continues to move towards the bottom of the limiting cylinder 16, and the rubber head 14 is inserted into the matching groove 19, since the matching groove 19 is matched with the profile of the rubber head 14, and the rubber head 14 is made of rubber material with anti-skid lines on the surface, therefore, under the action of friction and extrusion force, the first rotating shaft 6 is stopped, which makes the rotor 7 stop immediately when the device stops working, avoiding the influence of mechanical inertia and reducing the accuracy of detection data.

[0052] It is worth mentioning that, since the surface of the driving shaft 12 is provided with a plurality of driving grooves 13, when the driving shaft 12 is reset, the driving grooves 13 are easily matched with the driving blocks 20, improving the convenience of the resetting process of the device.

[0053] In this embodiment, as shown in Figure 1 and Figures 11 to 14 , the second brake mechanism is used for isolating and protecting the rotor 7, and the second brake mechanism is connected with the clamping plate 28 and the positioning cylinder 4 respectively, and the second brake mechanism comprises a second operating rod 21 inserted into the clamping plate 28, a second lower pressing seat 22 fixedly connected to the outer wall of the second operating rod 21, and a second rotating shaft 25 fixedly connected to the positioning cylinder 4, and the outer wall of the second rotating shaft 25 is rotatably connected with two enclosing barriers 23, the second lower pressing seat 22 is composed of a bottom cone and a top cylinder, the two enclosing barriers 23 are both provided with a conical groove 24 corresponding to the position of the second lower pressing seat 22, the enclosing barriers 23 have a semicircular profile, the two enclosing barriers 23 enclose a whole cylindrical body, and the circumferential size of the enclosed cylindrical body is greater than the size of the outer circumference of the rotor 7.

[0054] In the above structure, the second operating rod 21 is fixed with the clamping plate 28 by screws, the fixing mode between the second operating rod 21 and the clamping plate 28 is consistent with the fixing mode between the first operating rod 9 and the clamping plate 28, a single clamping plate 28 can simultaneously fix the second operating rod 21 and the first operating rod 9, the second lower pressing seat 22 is fixed with the second operating rod 21 by screws, the fixing mode between the second lower pressing seat 22 and the second operating rod 21 is consistent with the fixing mode between the first operating rod 9 and the first lower pressing seat 10, and by analogy, when the operator presses the second operating rod 21 downward, the second lower pressing seat 22 moves downward synchronously with the second operating rod 21, and the clamping plate 28 can limit the second operating rod 21 during the movement of the second operating rod 21, avoiding the dislocation and separation of the second operating rod 21.

[0055] Further, the enclosures 23 are wrapped outside the rotor 7 in the initial state, and when the operator puts the rotor 7 into the fluid to be measured, the enclosures 23 block the water impacting the rotor 7, so that the rotor 7 is prevented from rotating. When the preparation work is completed and the device is put into the fluid to be measured, the operator presses the second operating rod 21 downward, so that the second lower seat 22 moves towards the conical groove 24. Since the bottom of the second lower seat 22 is conical in profile and the conical groove 24 is also conical in profile, the two enclosures 23 are forced to rotate around the second rotating shaft 25 during the extrusion of the second lower seat 22 on the conical groove 24. During the rotation of the two enclosures 23, the end portions thereof are away from each other and are unfolded. The unfolded enclosures 23 cannot continue to block the fluid, and at this time, the rotor 7 is free to rotate under the impact of the fluid. Through the above structure, the rotor 7 is synchronized to rotate during the operation of the device, so that the uniformity of the rotation time of the rotor 7 is ensured, and the accuracy of the measurement data of the device is further improved.

[0056] In the embodiment, as shown in Figure 1 and Figures 11 to 14 , the enclosure 23 is fixedly connected with a guide plate 26 away from one end of the positioning cylinder 4. The guide plate 26 is arc-shaped in profile and protrudes outwardly from the enclosure 23. The outer wall of the enclosure 23 is fixedly connected with an elastic wire 27. The two ends of the elastic wire 27 are helically twisted metal wires, and the middle part is a straight metal wire. The two ends of the elastic wire 27 are fixedly connected to the outer walls of the two enclosures 23, respectively. The guide plate 26 is provided with a groove corresponding to the position of the elastic wire 27.

[0057] As described above, when the second lower seat 22 extrudes the conical groove 24, the two enclosures 23 are unfolded. The unfolded enclosures 23 do not block the fluid from impacting the rotor 7. Further, since the two ends of the elastic wire 27 are fixedly connected to the outer walls of the two enclosures 23, and the two ends of the elastic wire 27 are helically twisted metal wires, the helically twisted part of the elastic wire 27 is gradually unfolded during the unfolding of the enclosures 23. The elastic wire 27 exerts a reverse pulling force on the two enclosures 23 during the unfolding process. When the operator lifts the second operating rod 21 upward, the two enclosures 23 are automatically reset under the action of the pulling force of the elastic wire 27, so that the convenience of repeated use of the device is improved.

[0058] Further, the guide plate 26 is arranged at the end of the enclosure 23, and a groove corresponding to the position of the elastic wire 27 is arranged on the guide plate 26, so that the guide plate 26 can guide and limit the elastic wire 27, so as to avoid the elastic wire 27 from being separated from the enclosure 23 during deformation. In addition, when the enclosure 23 is unfolded, the garbage and phytoplankton around the rotor 7 can be stripped, so as to avoid the garbage and phytoplankton from being wound around the rotor 7 and affecting the normal use of the device. Moreover, after the enclosure 23 is unfolded, the elastic wire 27 is wrapped outside the enclosure 23. When the garbage and phytoplankton float towards the rotor 7 along the flowing direction of the fluid, the elastic wire 27 can isolate and block the garbage and phytoplankton, so as to avoid the garbage and phytoplankton from being wound around the rotor 7 and affecting the measuring efficiency of the device. Since the guide plate 26 protrudes towards the outside of the enclosure 23, the distance between the elastic wire 27 and the rotor 7 after the enclosure 23 is unfolded can be increased. When the garbage and phytoplankton are wound around the surface of the elastic wire 27, since the distance between the elastic wire 27 and the rotor 7 is large enough, the normal rotation of the rotor 7 is not affected.

[0059] The working principle of the technical scheme provided by the present application is as follows:

[0060] In use, an operator first measures the depth of the fluid to be measured, and then sets three measuring points according to the depth, selectively splices the height of the splicing rod 2 according to the height of the measuring points, and then installs the tail wing 3, the mounting frame 5 and the rotor 7 on the splicing rod 2. After installation, the operator holds the splicing rod 2 to put the device into the fluid to be measured, so that the base 1 is inserted and placed at the bottom of the fluid to be measured. During the process of putting the device into the fluid to be measured, the enclosure 23 is wrapped outside the rotor 7, and the enclosure 23 blocks the water impacting the rotor 7, so as to avoid the rotor 7 from rotating.

[0061] When the device is completely put into the fluid to be measured, the operator holds the first operating rod 9 and the curved part of the splicing rod 2 at the same time, and then flexes and extends the fingers to drive the first operating rod 9 to move downward. The first operating rod 9 moves downward to drive the first lower seat 10 to move synchronously. At this time, the slide column 11 slides towards the bottom of the limiting cylinder 16. Under the cooperation of the driving groove 13 and the driving block 20, the driving block 20 slides along the track of the driving groove 13. Since the track of the driving groove 13 is spiral, the driving block 20 rotates around the surface of the driving shaft 12, so as to drive the first rotating shaft 6 to rotate. During the rotation of the first rotating shaft 6, the rotor 7 rotates. The rotation speed of the rotor 7 depends on the force and speed at which the operator presses the first operating rod 9. The greater the force and speed, the greater the rotation speed of the rotor 7, so as to avoid the influence of mechanical inertia on the rotor 7, and greatly shorten the time required for starting the rotor 7.

[0062] When the rotor 7 rotates, the operator holds the second operating rod 21 and the curved part of the splicing rod 2 with hands, and then the fingers are flexed to drive the second operating rod 21 to move downward. In the moving process of the second operating rod 21, the second pressing seat 22 moves downward synchronously with the second operating rod 21. Since the bottom of the second pressing seat 22 is a tapered profile and the tapered groove 24 is also a tapered profile, the two enclosures 23 are forced to rotate around the second rotating shaft 25 in the process of the second pressing seat 22 extruding the tapered groove 24. In the rotating process of the two enclosures 23, the end portions of the two enclosures 23 are away from each other and are unfolded. The unfolded enclosures 23 cannot continue to shield the fluid, and at this time, the rotor 7 is free to rotate under the impact of the fluid. In the unfolding process of the enclosures 23, the garbage and phytoplankton around the rotor 7 are stripped, so that the garbage and phytoplankton are prevented from winding around the rotor 7 and affecting the normal use of the device. Moreover, the elastic wires 27 are wrapped outside the enclosures 23 after the enclosures 23 are unfolded. When the garbage and phytoplankton float towards the rotor 7 along the flowing direction of the fluid, the elastic wires 27 can isolate and block the garbage and phytoplankton, so that the garbage and phytoplankton are prevented from winding around the rotor 7 and affecting the measuring efficiency of the device.

[0063] When the device finishes measuring, the operator presses the first operating rod 9 with force. At this time, the driving shaft 12 continues to move towards the bottom of the limiting cylinder 16, and the rubber head 14 is inserted into the adaptive groove 19. Since the adaptive groove 19 is matched with the profile of the rubber head 14, and the rubber head 14 is made of rubber material with anti-skid lines on the surface, the first rotating shaft 6 is stopped from rotating under the action of friction and extrusion force. Such a design allows the rotor 7 to immediately stop rotating when the device stops working, so that the accuracy of the detection data is not reduced due to the influence of mechanical inertia. After the rotor 7 stops rotating, the operator holds the splicing rod 2 to pull the device upwards, so that the device can be taken out from the fluid to be measured.

[0064] The present application covers any alternatives, modifications, equivalent methods and solutions made on the essence and scope of the present application. In order for the public to have a thorough understanding of the present application, specific details are described in the following preferred embodiments of the present application, and the present application can also be completely understood without the description of these details for those skilled in the art. In addition, in order to avoid unnecessary confusion to the essence of the present application, well-known methods, processes, procedures, elements and circuits are not described in detail.

[0065] The above is only the preferred embodiment of the present application, and it should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principle of the present application. These improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A hydrologic flow measuring device for hydrogeological engineering, comprising a base, characterized in that, The top of the base is screwed with a plurality of splicing rods, a plurality of the splicing rods are sequentially screwed together, a tail fin is inserted in the splicing rod, a positioning cylinder is fixedly connected to the tail fin, an installation frame is fixedly connected to the end of the tail fin, the installation frame is a "C" shaped profile, a first rotating shaft is rotatably connected to the end of the installation frame, a rotor is fixedly connected to the outer wall of the first rotating shaft, a signal generating mechanism is installed at the bottom of the rotor, and a clamping plate is fixedly connected to the outer wall of the splicing rod. A first braking mechanism is used to drive the rotor to rotate, and the first braking mechanism is connected with the clamping plate, the installation frame and the first rotating shaft respectively. A second braking mechanism is used to isolate and protect the rotor, and the second braking mechanism is connected with the clamping plate and the positioning cylinder respectively. The first braking mechanism comprises a first operating rod inserted in the clamping plate, a first pressing seat is fixedly connected to the outer wall of the first operating rod, a slide column is fixedly connected to one end of the first pressing seat away from the first operating rod, and a driving shaft is fixedly connected to the bottom of the slide column. The first braking mechanism further comprises a mounting seat fixedly connected to the top of the installation frame, a limiting cylinder is screwed to the top end of the mounting seat, and a limiting groove with a size matched with that of the first pressing seat is formed in the limiting cylinder. The first braking mechanism further comprises a braking cavity formed in the top end of the first rotating shaft. The second braking mechanism comprises a second operating rod inserted in the clamping plate, and a second pressing seat is fixedly connected to the outer wall of the second operating rod. The second braking mechanism further comprises a second rotating shaft fixedly connected in the positioning cylinder, and two enclosures are rotatably connected to the outer wall of the second rotating shaft.

2. The hydrological flow measuring device for hydrogeological engineering according to claim 1, characterized in that, The braking cavity is composed of two chambers, the size of the top chamber is smaller than that of the bottom chamber, the size of the top chamber is matched with that of the driving shaft, and the length of the bottom chamber is greater than that of the driving shaft.

3. The hydrological flow measuring device for hydrogeological engineering according to claim 1, characterized by A plurality of driving grooves are formed in the outer wall of the driving shaft, the driving grooves extend from one end of the driving shaft to the other end of the driving shaft in a spiral track, and a driving block matched with the size of the driving groove is fixedly connected to the inner wall of the top of the braking cavity.

4. The hydrological flow measuring device for hydrogeological engineering according to claim 1, characterized by A rubber head is fixedly inserted in the bottom end of the driving shaft, the cross-sectional profile of the rubber head is conical, anti-skid lines are arranged on the outer wall of the rubber head, an adaptive groove matched with the profile of the rubber head is formed in the first rotating shaft, and the adaptive groove is located at the bottom of the braking cavity.

5. The hydrological flow measuring device for hydrogeological engineering according to claim 1, characterized by The second pressing seat is composed of a bottom cone and a top cylinder, and a conical groove corresponding to the position of the second pressing seat is formed in each of the two enclosures.

6. The hydrological flow measuring device for hydrogeological engineering according to claim 1, characterized by The enclosure has a semicircular profile, the two enclosures form a whole circular cylinder, and the inner circumferential size of the circular cylinder formed by the two enclosures is greater than the outer circumferential size of the rotor.

7. The hydrological flow measuring device for hydrogeological engineering according to claim 1, characterized by A guide plate is fixedly connected to one end of the enclosure away from the positioning cylinder, and the guide plate has an arc-shaped profile protruding outwardly from the enclosure.

8. The hydrological flow measuring device for hydrogeological engineering according to claim 7, characterized by The outer wall of the fence is fixedly connected with elastic wires, both ends of each of the elastic wires are helically twisted metal wires, and the middle part is a straight metal wire, both ends of each of the elastic wires are fixed on the outer walls of the two fences respectively, and a groove corresponding to the position of the elastic wire is formed in the guide plate.

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