Sand content detection device for water conservancy and hydrology

Abstract

The invention relates to the technical field of hydrological detection, in particular to a water conservancy hydrological sand content detection device which comprises a hydrological detection ship, a winch lifting mechanism and detection equipment, a vertical frame is fixed to one side of the hydrological detection ship, the winch lifting mechanism is installed on the top of the vertical frame, and the detection equipment is suspended in water through a cable rope. The detection device is composed of a main sleeve, a movable sleeve and a detection instrument, the main sleeve is connected with the lower end of the cable rope, the movable sleeve is rotationally sleeved with the main sleeve, a water flow through groove is formed in the main sleeve, and a water inlet through groove is formed in the movable sleeve. The motor drives the movable sleeve to rotate, so that the water inlet through groove and the water flow through groove are communicated or staggered, water flow on-off is controlled, and a sealed detection area is formed. The device controls the water flow state, provides a stable detection environment, adopts a sealing design to reduce maintenance, ensures the precision of a detection position through a guide pipe and a guide sleeve structure, is suitable for the fields of water conservancy projects, water environment monitoring and the like, can realize multi-depth synchronous detection, and provides accurate data for detection of the sand content in water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrological detection, in particular to a water conservancy and hydrology sediment concentration detection device. BACKGROUND

[0002] The water conservancy and hydrology sediment concentration detection device is an important equipment for monitoring the sediment content in water, and is widely used in the fields of water conservancy engineering, water environment monitoring, geological disaster warning, etc. The sediment concentration is the mass or volume ratio of solid particles such as sediment, mineral particles, etc. in unit volume of water or soil, and also includes the detection of parameters such as particle size distribution, organic matter content, settling velocity, etc. In the construction and management of water conservancy projects such as reservoirs and dams, high sediment concentration will gradually reduce the reservoir capacity and reduce the water storage capacity, and even threaten the safety of the dam. For example, the Xiaolangdi Reservoir on the Yellow River needs to monitor the sediment concentration in real time to reasonably regulate the water flow. Monitoring the sediment concentration can prevent problems such as reservoir sedimentation and gate wear, and provide a basis for engineering design and operation scheduling. Excessive sediment can deteriorate water quality and affect the survival environment of aquatic organisms. Appropriate sediment plays an important role in maintaining the balance of river ecosystems. Moreover, in river regulation and flood control work, sediment concentration data can predict the trend of river evolution and flood risk, and flood control measures can be developed in advance.

[0003] The existing detection devices include (1) optical type: such as photoelectric sediment meter, synchronous water temperature, water depth, suitable for uniform and stable river sediment particle size, sediment concentration less than 45 kg / m³, flow velocity less than 5 m / s at measuring point; quantum dot spectrum sediment meter, sediment measurement range 0.001-20 kg / m³, suitable for water depth above 0.3 m water body, no serious non-natural light pollution in the area. (2) Acoustic type: ultrasonic sediment meter, used for uniform and stable sediment particle size water body, sediment measurement range 0.5-1000 kg / m³, flow velocity less than 3 m / s at measuring point, water depth not more than 10 m, can work underwater for a long time, but the error is large, suitable for high sediment concentration when the precision requirement is not high.

[0004] However, the measurement accuracy of optical instruments decreases in high turbidity and complex water environment, the ultrasonic sediment meter is disturbed by temperature, flow rate, air bubbles, etc., and the measurement error is large. Some instruments have high requirements for water conditions and sediment characteristics, such as photoelectric sediment meter suitable for uniform and stable river sediment particle size, ultrasonic sediment meter needs to be used within a certain flow rate and water depth range; and the surface of optical sensors is easy to be contaminated and needs to be cleaned regularly; some instruments need to be frequently calibrated, increasing the maintenance workload and cost, which restricts the accurate detection of water conservancy and hydrology sediment concentration.

[0005] Therefore, the present application aims to provide a new water conservancy and hydrology sediment concentration detection device to overcome the shortcomings in the prior art and improve the precision, adaptability and reliability of sediment concentration detection. SUMMARY

[0006] In view of the problems of insufficient measurement accuracy in high turbidity and complex water body environment, and being easily disturbed by flow rate, bubbles and other factors, the present application provides a water conservancy and hydrology sediment concentration detection device, which provides a stable detection environment, improves accuracy and adaptability, and reduces maintenance cost through the design of movable sleeve control water flow, sealing detection and layered detection.

[0007] The technical problem is solved by a water conservancy and hydrology sediment concentration detection device, which comprises a hydrological detection ship, a hoist lifting mechanism and a detection device. The detection device comprises a main sleeve, a movable sleeve, a light source and a detection instrument. The main sleeve is connected to the lower end of the cable rope, and the movable sleeve is rotatably sleeved in the main sleeve. The main sleeve is provided with a water flow channel, and the movable sleeve is provided with a water inlet channel. A motor two is installed below the main sleeve to control the rotation of the movable sleeve. The detection instrument comprises a light source and a sediment concentration detector. The light source and the sediment concentration detector are installed in the ring sleeve outside the main sleeve.

[0008] Further, the hoist lifting mechanism comprises a motor one, a main shaft, a rope wheel, a cable rope and a rotary joint. The main shaft is rotatably installed on the top of the stand by a shaft seat. The motor one is fixed on the stand and drives the main shaft to rotate. The rope wheel is fixedly sleeved on the main shaft. The cable rope is wound on the rope wheel, one end of which is connected with the detection device, and the other end is electrically connected with the control screen through the rotary joint.

[0009] Further, the movable sleeve is rotatably installed in the main sleeve by a rotating shaft. A motor two is installed at the end of the main sleeve. The motor two drives the movable sleeve to rotate, so that the water flow channel corresponds to or is dislocated from the water inlet channel. The lower end of the main sleeve is provided with a waterproof shell, and the motor two is located in the waterproof shell.

[0010] Further, the detection device further comprises a ring sleeve which forms a sealed cavity with the main sleeve. The light source and the sediment concentration detector are symmetrically installed in the sealed cavity, and the side wall of the sealed cavity close to the movable sleeve is a transparent cylinder wall.

[0011] Further, it further comprises a plurality of guide pipes and guide sleeves. The guide pipes are sleeved on the cable rope. The lowermost guide pipe is connected with the detection device, and the upper end guide pipe is sequentially connected with other guide pipes to form a long pipe. The guide sleeves are fixed outside the stand, and the guide pipes pass through the guide sleeves.

[0012] Further, a vertical slot is formed in the sidewall of the guide pipe, the cable is put into the guide pipe through the vertical slot, a threaded connection section is arranged at the lower end of the guide pipe, and an internal thread is arranged at the upper end of the guide pipe, and a plurality of guide pipes are connected in sequence through threaded connection to form a long pipe.

[0013] Further, a clamping limiting assembly is arranged on the guide sleeve, the clamping limiting assembly comprises a scissor-shaped connecting rod structure and a tension spring, a sleeve hole and a pipe hole are formed in the corresponding positions of the guide sleeve and the guide pipe respectively, the scissor-shaped connecting rod structure is composed of two symmetrical rod bodies, the intersection of the two rod bodies is installed on a support rod through a pin shaft, the clamping part at the front end of the two rod bodies is used for inserting into the sleeve hole of the guide sleeve and the pipe hole of the guide pipe, and the tension spring is connected to the two rod bodies of the scissor-shaped connecting rod structure, so that the scissor-shaped connecting rod structure is provided with a reset force.

[0014] Further, a plurality of groups of detection instruments are arranged longitudinally in the sealing cavity between the ring sleeve and the main sleeve, and each group of detection instruments corresponds to water flow of different depths.

[0015] The beneficial effects of the present application are as follows: The detection equipment realizes the communication or dislocation of the water flow channel and the water inlet channel through the rotating cooperation of the movable sleeve and the main sleeve, then intercepts the water flow to form a sealed detection area, effectively avoids the interference of the water flow on the detection process, provides a stable environment for the sediment content detection, and improves the accuracy and stability of the detection. The light source and the detection instrument are located in the sealing cavity and do not directly contact with the water flow, so that the sediment adhesion is reduced, a plurality of groups of detection instruments are arranged longitudinally in the sealing cavity, the sediment content at different water depths can be detected synchronously, compared with single-point detection, the data is more in line with the vertical distribution characteristics of the water body, and more accurate layered data is provided for reservoir siltation simulation and river evolution analysis. The guide pipe is sleeved with the cable through the vertical slot, and realizes vertical guidance in cooperation with the guide sleeve, so that the detection equipment is prevented from tilting or swinging underwater, and the detection position accuracy is ensured; the guide pipe is connected through threads, and can be flexibly spliced according to the water depth, so as to adapt to the detection of different water depths. The scissor-shaped connecting rod structure and the tension spring on the guide sleeve can limit the guide pipe section by section, the stable connection is realized by inserting the clamping part into the sleeve hole and the pipe hole during installation, the guide pipe is prevented from falling off, and the splicing operation can be completed by one person, so that the installation efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is one of the overall structure schematic diagrams of the present application; Figure 2 It is the second overall structure schematic diagram of the present application; Figure 3 It is the front view structure schematic diagram of the winch lifting mechanism and the detection equipment of the present application; Figure 4 For the application Figure 3 A-A cross-sectional structure schematic diagram in the application; Figure 5 For the application, the perspective structure schematic diagram of the main sleeve and the movable sleeve; Figure 6 For the application, the top view cross-sectional structure schematic diagram of the detection device; Figure 7 For the application Figure 3 B-B cross-sectional structure schematic diagram in the application; Figure 8 For the application, the guide sleeve and the guide tube structure schematic diagram; Figure 9 For the application, the clamping limiting component structure schematic diagram.

[0017] In the figure: 1, hydrological detection ship; 2, stand; 3, hoist lifting mechanism; 31, motor frame; 32, motor one; 33, main shaft; 34, rope wheel; 35, cable rope; 36, rotary joint; 4, guide sleeve; 5, support rod; 6, guide tube; 61, tube body; 62, vertical groove; 63, threaded connection section; 64, internal thread; 7, detection device; 71, main sleeve; 72, ring sleeve; 73, light source; 74, sediment concentration detector; 75, movable sleeve; 76, rotating shaft; 77, motor two; 78, waterproof shell; 7a, water flow through groove; 7b, water inlet through groove; 8, control screen; 9, clamping limiting component; 91, sleeve hole; 92, pipe hole; 93, clamping part; 94, scissors-shaped connecting rod structure; 95, tension spring. DETAILED DESCRIPTION

[0018] The application will be further described below in combination with the drawings and examples.

[0019] Please refer to Figures 1-9 , the application provides a technical scheme of a water conservancy and hydrology sediment concentration detection device: Embodiments

[0020] According to Figure 1 and Figure 2As shown, a water conservancy and hydrology sediment concentration detection device mainly comprises a hydrological detection ship 1, a stand 2, a hoist lifting mechanism 3, a detection equipment 7 and a control screen 8. The stand 2 is vertically fixed at one side edge of the hydrological detection ship 1. The hoist lifting mechanism 3 is installed at the top of the stand 2. The detection equipment 7 is arranged at the lower end of the cable rope 35 of the hoist lifting mechanism 3 and is powered and signal transmitted through the cable rope 35. The control screen 8 is installed on the stand 2 at a suitable position for easy operation and is signal connected with the detection equipment 7 through the cable rope 35. The water conservancy detector controls the hoist lifting mechanism 3 to drive the detection equipment 7 to be put into water for detecting the sediment concentration of river or sea water through the control screen 8 on the hydrological detection ship 1. The detection equipment 7 can be precisely placed at a specified water depth position through remote control of the control screen 8, so that the detection flexibility and efficiency are improved As shown in the drawings, Figure 3 The hoist lifting mechanism 3 comprises a main shaft 33 transversely rotatingly sleeved at the top of the stand 2. A motor one 32 is fixedly installed on the stand 2 through a motor bracket 31. The output end of the motor one 32 is connected with one end of the main shaft 33 for controlling the rotation of the main shaft 33. The other end of the main shaft 33 is provided with a rotary joint 36. A rope wheel 34 is fixedly sleeved on the main shaft 33. The cable rope 35 is wound on the rope wheel 34. One end of the cable rope 35 is connected with the detection equipment 7, and the other end is connected with the rotary joint 36 installed at the end of the main shaft 33. The rotary joint 36 and the control screen 8 are connected through a cable to realize the signal transmission between the cable rope 35 and the control screen 8. The rotary joint 36 enables the cable to keep stable electrical connection when the main shaft 33 rotates, avoiding signal transmission interruption or instability caused by cable winding.

[0021] The specific structure of the detection equipment 7 is shown in the drawings, Figures 4-6As shown, including the main sleeve 71 hanging in the tail end of the cable rope 35, a movable sleeve 75 is rotatably sleeved in the main sleeve 71, the upper and lower ends of the movable sleeve 75 are provided with rotating shafts 76, the movable sleeve 75 is rotatably installed in the main sleeve 71 through the rotating shafts 76 and matched shaft seats, a second motor 77 is installed at the end of the main sleeve 71, the end of the second motor 77 is connected with the rotating shaft 76 below the movable sleeve 75, which is used for controlling the rotation of the movable sleeve 75 in the main sleeve 71, and since the detection equipment 7 is used underwater, a waterproof shell 78 is arranged at the lower end of the main sleeve 71, the second motor 77 is arranged in the waterproof shell 78, so as to prevent the second motor 77 from being damaged due to water entering; the outer diameter of the movable sleeve 75 matches the inner diameter of the main sleeve 71, the movable sleeve 75 is smoothly rotated in the main sleeve 71, and there is no large gap between the two, a water flow channel 7a is formed through the main sleeve 71, a water inlet channel 7b is formed through the movable sleeve 75, and the size of the water inlet channel 7b is slightly smaller than that of the water flow channel 7a, when the water flow channel 7a and the water inlet channel 7b completely correspond, that is, the main sleeve 71 and the movable sleeve 75 are in the position of 0°, water can smoothly flow through the detection equipment 7 through the water flow channel 7a and the water inlet channel 7b; when the water flow channel 7a and the water inlet channel 7b are misaligned, that is, the movable sleeve 75 is rotated by 90° in the main sleeve 71, the water inlet channel 7b is blocked by the main sleeve 71, and the water flowing through is intercepted in the sealed detection area formed by the main sleeve 71 and the movable sleeve 75, so that the sand content detector 74 can detect in a stable environment, and the detection of the sand content in the water is realized through the detection instrument in the detection equipment 7. The rotation of the movable sleeve 75 is driven by the second motor 77, the relative position of the water flow channel 7a and the water inlet channel 7b is changed, so as to realize the on-off of the water flow, and further control the water flow state in the detection area, so as to provide a stable detection environment for the sand content detection. This design can effectively avoid the interference of the water flow on the detection process, improve the accuracy and stability of the detection, and through the accurate control of the second motor 77, the water flow state can be quickly switched, and the detection efficiency is improved.

[0022] Two ring sleeves 72 are symmetrically arranged outside the main sleeve 71 of the detection equipment 7, the two ring sleeves 72 are perpendicular to the water flow channel 7a, two symmetrical sealed cavities are formed between the two ring sleeves 72 and the main sleeve 71, a light source 73 is arranged in one of the sealed cavities, and a sand content detector 74 is arranged in the other sealed cavity, and the sand content detector 74 corresponds to the position of the light source 73. In order to ensure that the light generated by the light source 73 on one side can be smoothly captured by the sand content detector 74, the side wall of the sealed cavity close to the movable sleeve 75 is arranged as a transparent cylinder wall, so that when water is intercepted in the sealed detection area, the light generated by the light source 73 on one side is detected by the sand content detector 74 after penetrating through the water, and the sand content data in the water can be determined by determining the light intensity received by the sand content detector 74.

[0023] The principle of the sand content detector 74 and the light source 73 for detecting the sand content in water is as follows: through scattering method detection: the scattering intensity of sand particles to incident light is proportional to the concentration, when the light irradiates the sand-containing water body, the sand particles will scatter the light to all directions, the intensity of the scattered light is related to the sand content, by measuring the scattering light intensity in a certain direction, the sand content of the water body can be calculated, such as optical backscattering sensor (OBS), which uses infrared light emitting diode to illuminate the water body, and photodetector measures the light intensity scattered back from the water column, which can be converted into turbidity, total suspended solids (TSS) or suspended sediment concentration (SSC) after calibration. Through transmission method detection: the intensity of the light passing through the water body will be attenuated due to the absorption and scattering of sand particles, the degree of attenuation is related to the sand content, after a parallel light passes through the uniformly distributed sand-containing water body, the intensity of the transmitted light will be weakened, part of the light is absorbed by suspended sand, and another part is scattered to other directions, according to the intensity change of the transmitted light and the incident light, the sand content of the water body can be calculated, such as the photoelectric sand detector, which is based on the law of extinction of muddy water, that is, the intensity of the transmitted light is weakened after a parallel light passes through the sand-containing water body, and the relationship between the sand content and the light intensity can be obtained according to the Beer's law.

[0024] After the detection device 7 enters the water, it needs to be kept in a vertical state and lowered. In order to limit the lifting of the detection device 7, a guide pipe 6 is arranged on the cable rope 35 to provide guidance and limitation for the cable rope 35, so as to prevent the cable rope 35 from tilting and swinging. The specific structure of the guide pipe 6 is shown in Figure 7 and Figure 8 It mainly includes a pipe body 61, a threaded connection section 63 is arranged at the lower end of the pipe body 61, and an internal thread 64 is arranged at the upper end of the pipe body 61, so that the guide pipes 6 can be arranged one by one and connected to form a long pipe, a longitudinal vertical groove 62 is vertically penetrated on the side wall of the pipe body 61 of the guide pipe 6, the width of the groove of the vertical groove 62 is slightly larger than the diameter of the cable rope 35, and the cable rope 35 can be smoothly moved into the guide pipe 6 through the vertical groove 62, and the lowest guide pipe 6 is installed and connected at the center position above the main pipe sleeve of the detection device 7. With the release of the cable rope 35, the guide pipe 6 is sequentially arranged on the cable rope 35 and connected with the lower guide pipe 6, the length of each guide pipe 6 is 1 meter, and when the length of the released cable rope 35 increases by 1 meter, a guide pipe 6 is added on the cable rope 35, and a guide sleeve 4 is fixed longitudinally on the outer side of the stand 2 through a support rod 5, the guide pipe 6 is movably inserted through the guide sleeve 4, the guide pipe 6 is limited by the guide sleeve 4, the guide pipe 6 is always kept in a vertical state, the released cable rope 35 is kept in the guide pipe 6 and always kept in a vertical state, and then the detection device 7 can be vertically placed in the water without deviation or tilting.

[0025] Since the detection device 7 is put into water for use, in order to ensure that the cable 35 can realize signal transmission, the cable 35 here adopts a waterproof cable with a waterproof rubber layer on the outer layer, which is suitable for devices that need to work underwater or in a humid environment.

[0026] In specific use, the water conservancy and hydrology sediment concentration detection device is used. When used, the water conservancy detector controls the hoist lifting mechanism 3 on the hydrology detection ship 1 through the control screen 8. The motor one 32 of the hoist lifting mechanism 3 is started to drive the main shaft 33 to rotate. The rope wheel 34 on the main shaft 33 rotates, and the cable 35 wound on the rope wheel 34 is lowered, thereby driving the detection device 7 into the water. As the length of the cable 35 is increased, the guide pipe 6 is also increased on the cable 35. The guide pipe 6 guides and limits the cable 35. When the detection device 7 enters the water, the guide pipe 6 guides and limits the cable 35 to ensure that the detection device 7 can be vertically placed in the water without deviation or inclination. When the detection device 7 works underwater, the movable sleeve 75 in the main sleeve 71 rotates under the drive of the motor two 77. When the water flow channel 7a and the water inlet channel 7b completely correspond, water can smoothly flow through the detection device 7. When the movable sleeve 75 rotates 90°, the water flow channel 7a and the water inlet channel 7b are misaligned. The water inlet channel 7b is blocked by the main sleeve 71, and the flowing water is intercepted in the sealed detection area formed by the main sleeve 71 and the movable sleeve 75. At this time, the light source 73 emits light, and the light is detected by the sediment concentration detector 74 after penetrating the water in the detection area. By determining the light intensity received by the sediment concentration detector 74, the sediment concentration data in the water can be determined. After the sediment concentration detection of the current water depth is completed, the cable 35 can be continuously controlled to be released to move the detection device 7 to different water depth to detect the sediment concentration at other positions. Embodiment

[0027] On the basis of embodiment one, the same parts of this embodiment and embodiment one will not be repeated. The difference is as follows: as shown in Figure 9 A clamping limiting assembly 9 is arranged on the guide sleeve 4 to limit the guide pipe 6 during the process of increasing the guide pipe 6.

[0028] The clamping and limiting assembly 9 comprises two rod bodies symmetrically installed on the supporting rod 5 through a pin shaft, the two rod bodies are connected together through the pin shaft to form a scissor-shaped connecting rod structure 94, the front ends of the two rod bodies of the scissor-shaped connecting rod structure 94 are provided with clamping portions 93, the guide sleeve 4 is symmetrically provided with sleeve holes 91, the pipe body 61 of the guide pipe 6 is symmetrically provided with pipe holes 92, the pipe holes 92 are arranged in a staggered manner with the vertical grooves 62, and a tension spring 95 is connected and installed between the two rod bodies of the scissor-shaped connecting rod structure 94, when the tension spring 95 is in a free extension and non-energy storage state, the clamping portions 93 are simultaneously clamped into the sleeve holes 91 and the pipe holes 92, the guide sleeve 4 and the previous guide pipe 6 currently located in the guide sleeve 4 are clamped and limited through the clamping portions 93, so that the previous guide pipe 6 is in a stable state, so as to facilitate the increase of the guide pipe 6 above the guide pipe 6, when the connection of the increased guide pipe 6 is completed, the end of the scissor-shaped connecting rod structure 94 is pressed, so that the tension spring 95 is stretched and stored, at this time, the clamping portions 93 are separated from the pipe holes 92, the limitation of the previous guide pipe 6 is released, then the previous guide pipe 6 in the guide sleeve 4 is continuously moved downward in cooperation with the cable rope 35, so that the newly increased guide pipe 6 enters the guide sleeve 4, then the scissor-shaped connecting rod structure 94 is released, the clamping portions 93 are pushed into the pipe holes 92 again through the tension spring 95 stored in the energy, the guide sleeve 4 and the newly increased guide pipe 6 are limited, so as to facilitate the threaded connection of the newly increased guide pipe 6 above.

[0029] In order to ensure that the pipe hole 92 of the guide pipe 6 and the sleeve hole 91 of the guide sleeve 4 can be aligned smoothly, when the guide pipe 6 is increased, the vertical grooves 62 on the guide pipe 6 are manually controlled in a manner that the vertical grooves 62 on each guide pipe 6 are all directed to one direction, so that the pipe hole 92 and the sleeve hole 91 can be aligned, and the hole size of the pipe hole 92 can also be set to be larger, even if a small amount of deviation occurs, the clamping and separation of the clamping portions 93 will not be affected.

[0030] In specific use, when the water conservancy and hydrology sediment concentration detection device needs to increase the guide pipe 6 on the cable rope 35, the direction of the vertical grooves 62 on the guide pipe 6 is manually controlled, so that the pipe hole 92 and the sleeve hole 91 can be aligned, then the end of the scissor-shaped connecting rod structure 94 is pressed, so that the tension spring 95 is stretched and stored, at this time, the clamping portions 93 are separated from the pipe holes 92, the limitation of the previous guide pipe 6 is released, then the previous guide pipe 6 in the guide sleeve 4 is continuously moved downward in cooperation with the cable rope 35, so that the newly increased guide pipe 6 enters the guide sleeve 4, then the scissor-shaped connecting rod structure 94 is released, the clamping portions 93 are pushed into the pipe holes 92 again through the tension spring 95 stored in the energy, the guide sleeve 4 and the newly increased guide pipe 6 are limited, so as to facilitate the installation of the next guide pipe 6, realize the step-by-step limitation, and in the whole process, the clamping and limiting assembly 9 can effectively limit the guide pipe 6, ensure the stable connection of the guide pipe 6, and improve the reliability and safety of the device. Embodiment

[0031] Based on Example 1, the similarities between this example and Example 1 will not be repeated here. The differences are as follows: Due to the uneven distribution of vertical sediment concentration in water bodies (e.g., higher sediment concentration near the riverbed), such as Figure 4 As shown, multiple sets of detection instruments are arranged longitudinally within two symmetrical sealed cavities formed between the ring sleeve 72 and the main sleeve 71. Each set of detection instruments corresponds to water flow at different depths, thereby performing stratified detection of the water flow. This allows for simultaneous detection of sediment content at different water depths, further improving the accuracy and efficiency of sediment content detection results. Compared to single-point detection, stratified detection data can provide more accurate data for reservoir siltation simulation and river evolution analysis.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydrological sediment concentration detection device, comprising a hydrological detection ship (1), a hoist lifting mechanism (3) and a detection equipment (7), characterized in that, The side edge of the hydrological detection ship (1) is vertically fixed with a stand (2), the winch lifting mechanism (3) is installed on the top of the stand (2), the detection equipment (7) is suspended in the water through the cable rope (35) of the winch lifting mechanism (3), a control screen (8) is installed on the stand (2) for remotely controlling the winch lifting mechanism (3) and the detection equipment (7); the detection equipment (7) comprises a main sleeve (71), a movable sleeve (75) and a detection instrument, the main sleeve (71) is connected to the lower end of the cable rope (35), the movable sleeve (75) is rotatably sleeved in the main sleeve (71), the main sleeve (71) is provided with a water flow channel (7a), the movable sleeve (75) is provided with a water inlet channel (7b), a second motor (77) for controlling the rotation of the movable sleeve (75) is installed below the main sleeve (71), the water inlet channel (7b) is communicated with the water flow channel (7a) or is out of position by controlling the rotation of the movable sleeve (75) in the main sleeve (71), thereby controlling the on-off of the water flow in the detection equipment (7), the detection instrument comprises a light source (73) and a sediment content detector (74), the light source (73) and the sediment content detector (74) are respectively installed in the ring sleeve (72) outside the main sleeve (71), and the positions of the two correspond.

2. The hydrological sediment concentration detection device according to claim 1, characterized in that, The winch lifting mechanism (3) comprises a first motor (32), a main shaft (33), a rope wheel (34), a cable rope (35) and a rotary joint (36), the main shaft (33) is rotatably installed on the top of the stand (2) through a shaft seat, the first motor (32) is fixed on the stand (2) and drives the main shaft (33) to rotate, the rope wheel (34) is fixedly sleeved on the main shaft (33), the cable rope (35) is wound on the rope wheel (34), one end of the cable rope (35) is connected with the detection equipment (7), and the other end is electrically connected with the control screen (8) through the rotary joint (36).

3. The hydrological sediment concentration detection device according to claim 1, characterized in that, The movable sleeve (75) is rotatably installed in the main sleeve (71) through a rotating shaft (76), a second motor (77) is installed at the end of the main sleeve (71), the second motor (77) drives the movable sleeve (75) to rotate, so that the water flow channel (7a) corresponds to the water inlet channel (7b) or is out of position, and the lower end of the main sleeve (71) is provided with a waterproof shell (78), and the second motor (77) is located in the waterproof shell (78).

4. The hydrological sediment concentration detection device according to claim 1, characterized in that, The detection equipment (7) further comprises a ring sleeve (72), which forms a sealed cavity with the main sleeve (71), the light source (73) and the sediment content detector (74) are symmetrically installed in the sealed cavity, and the side wall of the sealed cavity close to the movable sleeve (75) is a transparent cylinder wall.

5. The hydrological sediment concentration detection device according to claim 1, characterized in that, Further comprising a plurality of guide pipes (6) and guide sleeves (4), the guide pipes (6) are sleeved on the cable rope (35), the lowermost guide pipe (6) is connected with the detection equipment (7), and the upper end guide pipe (6) is sequentially connected with other guide pipes (6) to form a long pipe; the guide sleeve (4) is fixed outside the stand (2), the guide pipe (6) passes through the guide sleeve (4) movably, and the guide pipe (6) is guided and limited in position.

6. The hydrological sediment concentration detection device according to claim 5, characterized in that, The side wall of the guide pipe (6) is provided with a vertical groove (62), the cable (35) is put into the guide pipe (6) through the vertical groove (62), the lower end of the guide pipe (6) is provided with a threaded connection section (63), the upper end of the guide pipe (6) is provided with an internal thread (64), and a plurality of guide pipes (6) are sequentially connected in a threaded connection mode to form a long pipe.

7. The hydrological sediment concentration detection device according to claim 5, characterized in that, The guide sleeve (4) is provided with a clamping limiting assembly (9), the clamping limiting assembly (9) comprises a scissor-shaped connecting rod structure (94) and a tension spring (95), the guide sleeve (4) and the guide pipe (6) are respectively provided with a sleeve hole (91) and a pipe hole (92) at corresponding positions, the scissor-shaped connecting rod structure (94) is composed of two symmetrical rod bodies, the intersection of the two rod bodies is installed on the supporting rod (5) through a pin shaft, the clamping part (93) at the front end is used for being inserted into the sleeve hole (91) and the pipe hole (92), and the tension spring (95) is connected on the two rod bodies of the scissor-shaped connecting rod structure (94) and provides a reset force for the scissor-shaped connecting rod structure (94).

8. The hydrological sediment concentration detection device according to claim 1, characterized in that, A plurality of groups of detection instruments are longitudinally arranged in the sealing cavity between the ring sleeve (72) and the main sleeve (71), and each group of detection instruments corresponds to water flow of different depths.

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