Cascade reservoir water level height determining device

Abstract

The invention discloses a cascade reservoir water level height determination device, and relates to the technical field of water level measurement, the cascade reservoir water level height determination device comprises a mounting assembly and a positioning assembly, the mounting assembly is used for mounting a device for determining the water level height; according to the cascade reservoir water level height determination device, the water surface of a measurement area is framed up through the detection cover, so that the water surface in the detection cover does not fluctuate greatly, and the water surface height in the detection cover can be the same as the water surface height of a reservoir of the same level under the circulation action of a plurality of circulation holes in the bottom; therefore, the ultrasonic liquid level sensor can determine the water surface in the detection cover, influences caused by waves, rainwater, foam and the like are avoided, measurement errors are reduced, when the detection cover is used, the floating plate above the detection cover can make the upper portion of the detection cover float on the water surface without sinking, the lower portion of the detection cover can be pulled downwards through the multiple gravity anchors, and the detection cover is prevented from falling off. Therefore, the position of the detection cover is straightened and stably stands on the water surface.

Description

Technical Field

[0001] The invention relates to the technical field of water level measurement, in particular to a device for determining the water level height of a cascade reservoir. Background Art

[0002] Reservoirs play many important roles. For example, during flood season, they can reduce peak flows by storing water, alleviate flood threats in downstream areas, protect people's lives, property and infrastructure, and use the head drop of reservoirs to generate hydroelectric power and provide clean energy. Reservoirs are usually divided into valley-type reservoirs, plain-type reservoirs, and hilly-type reservoirs according to their location and formation conditions. A cascade reservoir refers to a series of reservoirs distributed in a stepped manner formed by building multiple reservoirs on a river. Its form consists of multiple reservoirs located in different geographical locations, adjacent to upstream and downstream, and with a certain drop.

[0003] At present, it is necessary to determine the water level height of cascade reservoirs. The determination of water level height can accurately grasp the water level height, which is helpful to reasonably arrange the water storage and flood discharge of the reservoir. When the flood comes, the flood control safety of the downstream area can be guaranteed by controlling the water level. In addition, too high water level may cause excessive pressure on dams and other water conservancy facilities, threatening the safety of the project. Too low water level may affect the normal function of the reservoir. However, the current water level detection equipment is easily affected by the water surface state when conducting water level detection. When the wind and waves are strong and the rainfall is heavy, the water surface fluctuates greatly, and the foam on the water surface will affect the accuracy of the detection results, resulting in inaccurate determination of the reservoir water level height.

[0004] Therefore, we propose a device for determining the water level height of cascade reservoirs in order to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a device for determining the water level height of a cascade reservoir, so as to solve the problem raised in the above background technology that the current water level detection cannot reduce the water surface fluctuation, thus causing inaccurate water level detection results.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for determining the water level height of a cascade reservoir, comprising an installation component and a positioning component, wherein the installation component is used to install a device for determining the water level height, and the positioning component is used to select a water area of ​​a detection height portion, the positioning component comprises a detection cover, a floating plate is fixedly connected to the outer surface of the detection cover near the top, and the structure of the floating plate is a frame-type circular plate made of plastic foam, a plurality of flow holes are opened near the bottom of the outer surface of the detection cover, and the flow holes are used to keep the water below the water surface flowing, a fixing ring is fixedly connected to the bottom of the detection cover, a plurality of reinforcement rings are welded to the outer surface of the fixing ring along the circumferential direction, a ring is movably sleeved inside each of the reinforcement rings, a traction chain is fixedly connected to the bottom of each of the traction chains, and the traction chain is used to connect heavy objects, and a gravity anchor for limiting the position of the detection cover is fixedly connected to the bottom end of each of the traction chains.

[0007] Preferably, the mounting assembly includes a mounting plate, the top of the mounting plate is fixedly connected to a fixing plate that plays a supporting role, the top of the fixing plate is provided with two fixing slides, the tops of the two fixing slides are fixedly connected to a connecting top plate, the bottom of the connecting top plate is fixedly connected to a positioning slide, the top of one side of the positioning slide slides inside the fixed slide, and the top of the other side of the positioning slide is fixedly connected to the bottom of the connecting top plate.

[0008] Preferably, a plurality of thread grooves are provided at the bottom of the fixing plate, a socket is provided at the bottom of the sliding block, the inner wall of the thread groove is threadedly connected with a fastening bolt for positioning the connecting top plate and the fixing plate, and the outer surface of the fastening bolt is slidably connected to the inner wall of the socket.

[0009] Preferably, a supporting plate is fixedly connected to an outer surface of one side of the connecting top plate, a mounting hole is opened on the top of the supporting plate, an ultrasonic liquid level sensor is arranged inside the mounting hole, and the ultrasonic liquid level sensor is used to determine the water level height.

[0010] Preferably, a protective cover is installed on the top of the supporting plate by screws, and the protective cover is used to protect the main part of the ultrasonic liquid level sensor, and a protective cover is installed on the bottom of the supporting plate by screws, and the protective cover is used to protect the probe part of the ultrasonic liquid level sensor.

[0011] Preferably, positioning blocks are fixedly connected to the outer surfaces of both sides of the supporting plate, positioning holes are provided on the tops of the two positioning blocks, and a movable opening is provided on the outer surface of the mounting plate. The inner wall of the movable opening is slidably connected to a limiting component, and the limiting component is used to position the detection cover.

[0012] Preferably, the limiting assembly includes an I-block, which is slidably connected inside the movable opening, and the outer surface of the I-block is fixedly connected to a limiting telescopic rod, and each connection section of the limiting telescopic rod is threadedly embedded with a positioning bolt, one end of the limiting telescopic rod is fixedly connected to a reinforcement block, and the reinforcement block is used to strengthen the connection, the outer surface of the reinforcement block is fixedly connected to a fixing rod, one end of the fixing rod is fixedly connected to a fixing block, and the fixing block is fixedly installed on the outside of the detection cover.

[0013] Preferably, a protective component is fixedly connected to the top of the connecting top plate, and the protective component includes a support frame. A forward and reverse motor is arranged on the top of the support frame, and the output shaft of the forward and reverse motor is fixedly connected to a fixed shaft. A roller is fixedly installed on the outside of the fixed shaft, and a suspension rope is wound around the outside of the roller, and both ends of the suspension rope pass through two positioning holes respectively.

[0014] Preferably, both ends of the suspension rope are fixedly connected with reinforcement blocks, and a rain cover is fixedly connected between the bottoms of the two reinforcement blocks. The rain cover is used to prevent a large amount of rainwater from pouring in from above the detection cover and affecting the water surface condition inside the detection cover. The rain cover is located above the detection cover.

[0015] Preferably, the tops of the two reinforcement blocks are fixedly connected with anti-sway telescopic rods, the tops of the two anti-sway telescopic rods are respectively fixedly connected to the bottoms of the two positioning blocks, and the two anti-sway telescopic rods are respectively arranged outside the two ends of the suspension rope.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. When in use, the water surface of the measuring area is framed by the detection cover so that the water surface inside the detection cover will not fluctuate greatly. Under the circulation effect of multiple flow holes at the bottom, the water surface height inside the detection cover can be made the same as the water surface height of the reservoir at the same level, so that the ultrasonic liquid level sensor can determine the water surface inside the detection cover, avoiding the influence of waves, rain, foam, etc., and reducing measurement errors. When the detection cover is in use, the floating plate above it will make the upper part of the detection cover float on the water surface without sinking, and the lower part of the detection cover can be pulled down by multiple gravity anchors, so that the detection cover is pulled straight and stands steadily on the water surface. When measuring the water level height, by starting the forward and reverse motors, the suspension rope is lowered until the rain cover reaches the top of the detection cover, which can prevent rainwater from dripping into the detection cover and affecting the detection results. The two multi-stage anti-sway telescopic rods can prevent the rain cover from shaking during the falling process.

[0018] 2. When in use, the length between the fixed plate and the connecting top plate can be extended or shortened by rotating the fastening bolts to pull the connecting top plate. The ultrasonic liquid level sensor is installed inside the mounting hole, and the protective cover is installed above it and the protective cover is installed below it, so that the ultrasonic liquid level sensor can be protected, which can prevent the main part of the ultrasonic liquid level sensor from aging due to rain, dust, sunlight, etc. above it, and can also protect the probe part of the ultrasonic liquid level sensor, which can prevent the probe from being damaged by the natural environment for a long time, thereby increasing the service life of the ultrasonic liquid level sensor.

[0019] 3. When in use, adjust the length of the limit telescopic rod. First loosen the positioning bolt, and then adjust the length of the limit telescopic rod so that the position of the detection cover is vertical to the ultrasonic liquid level sensor, and then tighten the positioning bolt. The limit telescopic rod and the fixed rod can be installed together through the reinforcement block, and then the connection with the detection cover is completed through the fixed block. The I-block slides inside the movable mouth. Therefore, when the detection cover floats on the water, the limit telescopic rod will move up and down at the same time. The I-block plays a limiting role, which can make the limit telescopic rod only move up and down and will not drift away from its original position. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front perspective view of a device for determining the water level height of a cascade reservoir according to the present invention;

[0021] Figure 2 A bottom-up stereoscopic diagram of a device for determining the water level height of a cascade reservoir according to the present invention;

[0022] Figure 3 It is a top perspective view of the installation component part of a device for determining the water level height of a cascade reservoir according to the present invention;

[0023] Figure 4 It is a perspective view of the structure of the installation component of a cascade reservoir water level determination device according to the present invention;

[0024] Figure 5 It is a perspective view of the partial structure of the protective component of a device for determining the water level height of a cascade reservoir according to the present invention;

[0025] Figure 6 It is a side perspective view of a portion of a limit assembly of a device for determining the water level height of a cascade reservoir according to the present invention;

[0026] Figure 7 A top perspective view of a positioning component portion of a device for determining the water level height of a cascade reservoir according to the present invention;

[0027] Figure 8 The present invention is a three-dimensional upward view of the detection cover portion of a device for determining the water level height of a cascade reservoir.

[0028] In the figure:

[0029] 1. Installation components; 101. Installation plate; 102. Movable opening; 103. Fixed plate; 104. Fixed slideway; 105. Connecting top plate; 106. Load-bearing plate; 107. Positioning block; 108. Positioning hole; 109. Threaded groove; 110. Slider; 111. Socket; 112. Fastening bolt; 113. Positioning slide; 114. Installation hole; 2. Protection components; 201. Support frame; 202. Forward and reverse motor; 203. Fixed shaft; 204. Roller; 205. Suspension rope; 206. Rain cover; 207, anti-sway telescopic rod; 208, reinforcement block; 3, limit assembly; 301, I-shaped block; 302, limit telescopic rod; 303, positioning bolt; 304, reinforcement block; 305, fixing rod; 306, fixing block; 4, positioning assembly; 401, detection cover; 402, flow hole; 403, fixing ring; 404, reinforcement ring; 405, floating plate; 406, collar; 407, traction chain; 408, gravity anchor; 5, protective cover; 6, protective cover; 7, ultrasonic liquid level sensor. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example 1: Reference Figure 1-8As shown, the present invention provides a technical solution: a device for determining the water level height of a cascade reservoir, comprising an installation component 1 and a positioning component 4, wherein the installation component 1 is used to install a device for determining the water level height, and the positioning component 4 is used to select a water area of ​​a detection height portion, and the positioning component 4 comprises a detection cover 401, and a floating plate 405 is fixedly connected to the outer surface of the detection cover 401 near the top, and the structure of the floating plate 405 is a frame-type circular plate made of plastic foam, and a plurality of flow holes 402 are opened near the bottom of the outer surface of the detection cover 401, and the flow holes 402 are used to keep the water below the water surface flowing, and the bottom of the detection cover 401 A fixing ring 403 is fixedly connected, and a plurality of reinforcing rings 404 are welded on the outer surface of the fixing ring 403 in the circumferential direction. A sleeve 406 is movably sleeved inside each reinforcing ring 404. A traction chain 407 is fixedly connected to the bottom of each sleeve 406, and the traction chain 407 is used to connect heavy objects. A gravity anchor 408 for limiting the position of the detection cover 401 is fixedly connected to the bottom of each traction chain 407. A protective component 2 is fixedly connected to the top of the top plate 105. The protective component 2 includes a support frame 201. A forward and reverse motor 202 is arranged on the top of the support frame 201. The output shaft of the forward and reverse motor 202 is fixed. A fixed shaft 203 is connected, a winding roller 204 is fixedly installed on the outside of the fixed shaft 203, a hanging rope 205 is wound around the outside of the winding roller 204, both ends of the hanging rope 205 pass through two positioning holes 108 respectively, both ends of the hanging rope 205 are fixedly connected with reinforcement blocks 208, a rain cover 206 is fixedly connected between the bottoms of the two reinforcement blocks 208, and the rain cover 206 is used to prevent a large amount of rain from pouring into the detection cover 401 from above and affecting the water surface condition inside the detection cover 401. The rain cover 206 is located above the detection cover 401, and the tops of the two reinforcement blocks 208 are fixedly connected with anti-sway telescopic rods 207. The two anti-sway telescopic rods 207 are fixedly connected to the tops of the two reinforcement blocks 208. The top of the retractable rod 207 is fixedly connected to the bottom of the two positioning blocks 107, and the two anti-sway telescopic rods 207 are respectively arranged outside the two ends of the suspension rope 205. The installation component 1 includes a mounting plate 101, and the top of the mounting plate 101 is fixedly connected to a fixed plate 103 that plays a supporting role. The top of the fixed plate 103 is provided with two fixed slides 104, and the tops of the two fixed slides 104 are fixedly connected to a connecting top plate 105. The outer surface of one side of the connecting top plate 105 is fixedly connected to a bearing plate 106, and a mounting hole 114 is provided on the top of the bearing plate 106, and an ultrasonic liquid level sensor 7 is arranged inside the mounting hole 114.

[0032] In this embodiment, when in use, by making the positions of the ultrasonic liquid level sensor 7 and the detection cover 401 correspond to each other, the water surface of the measuring area is framed by the detection cover 401, so that the water surface inside the detection cover 401 will not fluctuate greatly. Under the flow effect of the multiple flow holes 402 at the bottom, the water surface height inside the detection cover 401 can be made the same as the water surface height of the reservoir at the same level, so that the ultrasonic liquid level sensor 7 can determine the water surface inside the detection cover 401, avoiding the influence of waves, rain, foam, etc., and reducing measurement errors. When the detection cover 401 is in use, the floating plate 405 above it will make the upper part of the detection cover 401 float on the water surface without sinking, and the lower part of the detection cover 401 can be pulled downward by multiple gravity anchors 408, so that the detection cover 401 is pulled straight and stably on the water surface. When measuring the water level height, the forward and reverse motors 202 are started to rotate their output shafts, thereby driving the fixed shaft 203 and the winding roller 204 to rotate, so that the fixed shaft 203 and the winding roller 204 are wound around the winding roller 20 4, both ends of the hanging rope 205 on the surface are lowered simultaneously. When the hanging rope 205 is wound, the middle part is fixed on the winding roller 204, and the two ends are wound simultaneously. Both ends of the hanging rope 205 pass through the positioning hole 108, so that the lowering position of the hanging rope 205 can always be kept at the same position. At this time, the rain cover 206 will move downward until it reaches the top of the detection cover 401, which can prevent rainwater from dripping inside the detection cover 401 and affecting the detection result. The two multi-stage anti-sway telescopic rods 207 can prevent the rain cover 206 from shaking during the falling process. The ultrasonic liquid level sensor 7 is used to measure the water level. The sensor emits ultrasonic pulses to the liquid surface. The ultrasonic wave propagates in the air and is reflected back after encountering the liquid surface. The sensor receives the reflected wave and records the time interval from the emission to the reception of the ultrasonic wave. Since the propagation speed of the ultrasonic wave in the air is known, the distance from the sensor to the liquid surface can be calculated by measuring the time interval, thereby obtaining the water level.

[0033] Embodiment 2: Figure 1-6As shown, the mounting assembly 1 includes a mounting plate 101, the top of the mounting plate 101 is fixedly connected to a fixing plate 103 that plays a supporting role, the top of the fixing plate 103 is provided with two fixing slideways 104, the tops of the two fixing slideways 104 are fixedly connected to a connecting top plate 105, the bottom of the connecting top plate 105 is fixedly connected to a positioning slide plate 113, the top of one side of the positioning slide plate 113 slides inside the fixing slideway 104, the top of the other side of the positioning slide plate 113 is fixedly connected to the bottom of the connecting top plate 105, a plurality of thread grooves 109 are provided at the bottom of the fixing plate 103, a socket 111 is provided at the bottom of the slider 110, the inner wall of the thread groove 109 is threadedly connected with a fastening bolt 112 for positioning the connecting top plate 105 and the fixing plate 103, the outer surface of the fastening bolt 112 is slidably connected to the inner wall of the socket 111, and the connecting top plate A supporting plate 106 is fixedly connected to the outer surface of one side of 105, a mounting hole 114 is provided on the top of the supporting plate 106, an ultrasonic liquid level sensor 7 is arranged inside the mounting hole 114, and the ultrasonic liquid level sensor 7 is used to determine the water level height, a protective cover 5 is installed on the top of the supporting plate 106 by screws, and the protective cover 5 is used to protect the main part of the ultrasonic liquid level sensor 7, a protective cover 6 is installed on the bottom of the supporting plate 106 by screws, and the protective cover 6 is used to protect the probe part of the ultrasonic liquid level sensor 7, positioning blocks 107 are fixedly connected to the outer surfaces of both sides of the supporting plate 106, and positioning holes 108 are provided on the tops of the two positioning blocks 107, a movable opening 102 is provided on the outer surface of the mounting plate 101, and the inner wall of the movable opening 102 is slidably connected to the limit component 3, and the limit component 3 is used to position the detection cover 401.

[0034] In this embodiment, when in use, the connecting top plate 105 and the fixed plate 103 are stacked and installed, and the connecting top plate 105 slides on the top of the fixed plate 103. By pulling the connecting top plate 105, the length between the fixed plate 103 and the connecting top plate 105 can be extended or shortened. When pulling, it is necessary to rotate the fastening bolt 112 first to separate the fastening bolt 112 from the thread groove 109, so that the slider 110 and the positioning slider 113 will slide inside the fixed slideway 104. 0 is below the fixing plate 103, and the connecting top plate 105 is above the fixing plate 103, and the slider 110 and the connecting top plate 105 are fixed together, so when the slider 110 is positioned, the connecting top plate 105 is positioned, and when the connecting top plate 105 is moved to a different position, it is only necessary to install the fastening bolt 112 inside the corresponding thread groove 109, and the ultrasonic liquid level sensor 7 is installed inside the mounting hole 114, and the protective cover 5 is installed thereon. The protective cover 6 is installed below it, so that the ultrasonic liquid level sensor 7 can be protected, which can prevent the main part of the ultrasonic liquid level sensor 7 from aging due to rain, dust, sunlight, etc. above it, and can protect the probe part of the ultrasonic liquid level sensor 7, which can prevent the probe from being damaged by the natural environment for a long time, thereby improving the service life of the ultrasonic liquid level sensor 7. The ultrasonic liquid level sensor 7 is mainly composed of a piezoelectric chip, and its working principle is: the ultrasonic liquid level sensor 7 sends out an ultrasonic pulse, and the sound wave is converted into an electrical signal by the receiver after being reflected by the liquid surface. The distance between the sensor and the surface of the measured liquid is calculated by the time between the emission and reception of the sound wave, thereby judging the position of the liquid. The specific working process is: the sensor sends an ultrasonic wave to the liquid surface, the ultrasonic wave propagates in the liquid, and is reflected back after encountering the interface. The receiver receives the reflected ultrasonic wave and converts it into an electrical signal. The circuit inside the sensor processes and analyzes the electrical signal, calculates the height of the liquid level, and outputs the corresponding signal or data.

[0035] Embodiment three: Figure 1 , Figure 2 and Figure 6 As shown, the limit assembly 3 includes an I-shaped block 301, which is slidably connected inside the movable opening 102, and the outer surface of the I-shaped block 301 is fixedly connected to the limit telescopic rod 302, and each connection section of the limit telescopic rod 302 is threadedly embedded with a positioning bolt 303, one end of the limit telescopic rod 302 is fixedly connected to a reinforcement block 304, and the reinforcement block 304 is used to strengthen the connection, the outer surface of the reinforcement block 304 is fixedly connected to a fixing rod 305, one end of the fixing rod 305 is fixedly connected to a fixing block 306, and the fixing block 306 is fixedly installed on the outside of the detection cover 401.

[0036] In this embodiment, when in use, the length of the limit telescopic rod 302 needs to be adjusted. First, the positioning bolt 303 is loosened, and then the length of the limit telescopic rod 302 is adjusted so that the position of the detection cover 401 is in a vertical position with the ultrasonic liquid level sensor 7, and then the positioning bolt 303 is tightened. The limit telescopic rod 302 and the fixing rod 305 can be installed together through the reinforcing block 304, and then the connection with the detection cover 401 is completed through the fixing block 306, wherein the I-shaped block 301 slides inside the movable opening 102. Therefore, when the detection cover 401 floats on the water, the limit telescopic rod 302 will move up and down at the same time, and the I-shaped block 301 will play a limiting role, so that the limit telescopic rod 302 can only move up and down and will not drift away from the original position.

[0037] The method of use and working principle of the device: When in use, by making the positions of the ultrasonic liquid level sensor 7 and the detection cover 401 correspond, the water surface of the measurement area is framed by the detection cover 401, so that the water surface inside the detection cover 401 will not fluctuate greatly. Under the flow effect of the multiple flow holes 402 at the bottom, the water surface height inside the detection cover 401 can be made the same as the water surface height of the reservoir at the same level, so that the ultrasonic liquid level sensor 7 can determine the water surface inside the detection cover 401. When the detection cover 401 is in use, the floating plate 405 above it will make the upper part of the detection cover 401 float on the water surface without sinking, and the lower part of the detection cover 401 can be pulled downward by multiple gravity anchors 408, so that the detection cover 401 is pulled straight and stands steadily on the water surface. When measuring the water level, the forward and reverse motor 202 is started to rotate its output shaft, thereby driving the fixed shaft 203 and the roller 204 to rotate, so that the two ends of the suspension rope 205 wound on the surface of the roller 204 are lowered at the same time. When the suspension rope 205 is wound, the middle part is fixed on the roller 204, and the two ends are wound at the same time. The two ends of the suspension rope 205 pass through the positioning hole 108, so that the lowering position of the suspension rope 205 can always be kept in the same position. At this time, the rain cover 206 will move downward until it reaches the top of the detection cover 401. The two multi-stage anti-sway telescopic rods 207 can prevent the rain cover 206 from shaking during the falling process. The water level is measured using the ultrasonic liquid level sensor 7, and the sensor emits a signal to the liquid surface. Ultrasonic pulse, ultrasonic wave propagates in the air, and is reflected back after encountering the liquid surface. The sensor receives the reflected wave and records the time interval from the emission to the reception of the ultrasonic wave. Since the propagation speed of ultrasonic wave in the air is known, by measuring the time interval, the distance from the sensor to the liquid surface can be calculated, thereby obtaining the water level height. The specific measurement steps are: the sensor transmits a beam of ultrasonic pulse to the liquid surface, the sensor waits for and receives the ultrasonic wave reflected from the liquid surface, and the timing circuit inside the sensor accurately measures the time interval from the emission to the reception of the ultrasonic wave. According to the propagation speed of ultrasonic wave in the air and the measured time interval, the formula "distance = propagation speed × time interval / 2" is used to calculate the distance from the sensor to the liquid surface, and the distance from the sensor installation position to the reservoir is calculated. The water level height can be obtained by subtracting the calculated distance from the sensor to the liquid surface from the known distance at the bottom. The measured water level height data is processed and converted and output to the monitoring system or display device as a digital signal. When in use, the connecting top plate 105 and the fixed plate 103 are stacked and installed, and the connecting top plate 105 slides on the top of the fixed plate 103. The length between the fixed plate 103 and the connecting top plate 105 can be extended or shortened by pulling the connecting top plate 105. When pulling, it is necessary to rotate the fastening bolt 112 first to separate the fastening bolt 112 from the threaded groove 109. Then the slider 110 and the positioning slider 113 will slide inside the fixed slide 104. Since the bottom of the slider 110 is below the fixed plate 103,The connecting top plate 105 is above the fixed plate 103, and the slider 110 and the connecting top plate 105 are fixed together. Therefore, when the slider 110 is positioned, the connecting top plate 105 is also positioned. When the connecting top plate 105 is moved to a different position, it is only necessary to install the fastening bolts 112 inside the corresponding threaded grooves 109. By installing the ultrasonic liquid level sensor 7 inside the mounting hole 114, and installing the protective cover 5 above it, and installing the protective cover 6 below it, the ultrasonic liquid level sensor 7 can be protected. When in use, the length of the limiting telescopic rod 302 needs to be adjusted. First, loosen the positioning screw Bolt 303, and then adjust the length of the limit telescopic rod 302, so that the position of the detection cover 401 is in a vertical position with the ultrasonic liquid level sensor 7, and then tighten the positioning bolt 303, and the limit telescopic rod 302 and the fixing rod 305 can be installed together through the reinforcing block 304, and then the connection with the detection cover 401 is completed through the fixing block 306, wherein the I-shaped block 301 slides inside the movable opening 102, so when the detection cover 401 floats on the water, the limit telescopic rod 302 will move up and down at the same time, and the I-shaped block 301 will play a limiting role, so that the limit telescopic rod 302 can only move up and down, and will not drift away from the original position.

[0038] The wiring diagram of the forward and reverse motor 202 and the ultrasonic liquid level sensor 7 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring layout of the forward and reverse motor 202 and the ultrasonic liquid level sensor 7 are no longer explained in detail.

[0039] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for determining the water level of a cascade reservoir, comprising a mounting assembly (1) and a positioning assembly (4), wherein the mounting assembly (1) is used to mount the device for determining the water level, and the positioning assembly (4) is used to select a water area of ​​a detection height portion, characterized in that: The positioning assembly (4) comprises a detection cover (401), the outer surface of the detection cover (401) is fixedly connected to a floating plate (405) near the top, and the structure of the floating plate (405) is a frame-type circular plate made of plastic foam, the outer surface of the detection cover (401) is provided with a plurality of flow holes (402) near the bottom, and the flow holes (402) are used to keep the water below the water surface flowing, the bottom of the detection cover (401) is fixedly connected to a fixing ring (403), the outer surface of the fixing ring (403) is welded with a plurality of reinforcement rings (404) along the circumferential direction, each reinforcement ring (404) is movably sleeved with a collar (406), the bottom of each collar (406) is fixedly connected to a traction chain (407), and the traction chain (407) is used to connect a heavy object, and the bottom end of each traction chain (407) is fixedly connected to a gravity anchor (408) used to limit the position of the detection cover (401).

2. The device for determining the water level of cascade reservoirs according to claim 1, characterized in that: The mounting assembly (1) comprises a mounting plate (101), the top of the mounting plate (101) is fixedly connected to a fixing plate (103) for supporting, the top of the fixing plate (103) is provided with two fixing slideways (104), the tops of the two fixing slideways (104) are fixedly connected to a connecting top plate (105), the bottom of the connecting top plate (105) is fixedly connected to a positioning slide plate (113), the top of one side of the positioning slide plate (113) slides inside the fixing slideway (104), and the top of the other side of the positioning slide plate (113) is fixedly connected to the bottom of the connecting top plate (105).

3. The device for determining the water level of cascade reservoirs according to claim 2, characterized in that: The bottom of the fixing plate (103) is provided with a plurality of thread grooves (109), the bottom of the sliding block (110) is provided with an insertion hole (111), the inner wall of the thread groove (109) is threadedly connected with a fastening bolt (112) for positioning the connecting top plate (105) and the fixing plate (103), and the outer surface of the fastening bolt (112) is slidably connected to the inner wall of the insertion hole (111).

4. The device for determining the water level of cascade reservoirs according to claim 3, characterized in that: A bearing plate (106) is fixedly connected to an outer surface of one side of the connecting top plate (105), a mounting hole (114) is provided on the top of the bearing plate (106), an ultrasonic liquid level sensor (7) is arranged inside the mounting hole (114), and the ultrasonic liquid level sensor (7) is used to determine the water level height.

5. The device for determining the water level of cascade reservoirs according to claim 4, characterized in that: A protective cover (5) is installed on the top of the supporting plate (106) by means of screws, and the protective cover (5) is used to protect the main body of the ultrasonic liquid level sensor (7). A protective cover (6) is installed on the bottom of the supporting plate (106) by means of screws, and the protective cover (6) is used to protect the probe part of the ultrasonic liquid level sensor (7).

6. The device for determining the water level of cascade reservoirs according to claim 5, characterized in that: The outer surfaces of both sides of the carrier plate (106) are fixedly connected with positioning blocks (107), and the tops of the two positioning blocks (107) are provided with positioning holes (108). The outer surface of the mounting plate (101) is provided with a movable opening (102), and the inner wall of the movable opening (102) is slidably connected to a limiting component (3), and the limiting component (3) is used to position the detection cover (401).

7. The device for determining the water level of cascade reservoirs according to claim 6, characterized in that: The limiting assembly (3) comprises an I-shaped block (301), the I-shaped block (301) is slidably connected inside the movable opening (102), the outer surface of the I-shaped block (301) is fixedly connected to the limiting telescopic rod (302), each connection section of the limiting telescopic rod (302) is threadedly embedded with a positioning bolt (303), one end of the limiting telescopic rod (302) is fixedly connected to a reinforcing block (304), and the reinforcing block (304) is used to strengthen the connection, the outer surface of the reinforcing block (304) is fixedly connected to a fixing rod (305), one end of the fixing rod (305) is fixedly connected to a fixing block (306), and the fixing block (306) is fixedly installed on the outside of the detection cover (401).

8. The device for determining the water level of cascade reservoirs according to claim 7, characterized in that: The top of the connecting top plate (105) is fixedly connected to a protection component (2), the protection component (2) comprises a support frame (201), a forward and reverse motor (202) is arranged on the top of the support frame (201), the output shaft of the forward and reverse motor (202) is fixedly connected to a fixed shaft (203), a roller (204) is fixedly installed on the outside of the fixed shaft (203), a suspension rope (205) is wound around the outside of the roller (204), and two ends of the suspension rope (205) respectively pass through two positioning holes (108).

9. The device for determining the water level of cascade reservoirs according to claim 8, characterized in that: Both ends of the suspension rope (205) are fixedly connected to reinforcement blocks (208), and a rain cover (206) is fixedly connected between the bottoms of the two reinforcement blocks (208). The rain cover (206) is used to prevent a large amount of rainwater from pouring into the detection cover (401) from above and affecting the water surface condition inside the detection cover (401). The rain cover (206) is located above the detection cover (401).

10. The device for determining the water level of cascade reservoirs according to claim 9, characterized in that: The tops of the two reinforcement blocks (208) are fixedly connected to anti-sway telescopic rods (207), the tops of the two anti-sway telescopic rods (207) are respectively fixedly connected to the bottoms of the two positioning blocks (107), and the two anti-sway telescopic rods (207) are respectively arranged outside the two ends of the suspension rope (205).

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