A water level monitoring and alarming device for a hydropower station

Abstract

The application belongs to the technical field of water level monitoring, and particularly relates to a water level monitoring and alarming device for a hydropower station, which comprises a shell, a floating mechanism, an alarming mechanism and a recording mechanism. The floating mechanism is slidably arranged in the shell. The alarming mechanism is arranged in the shell. The recording mechanism is arranged in the shell. The device can drive different rotating wheels and slide rods to be aligned with the rising water level through the floating mechanism, so that the number of times of the knocking hammer striking the knocking bell changes with the water level, compared with the mode of only one kind of alarm after the water level rises, different alarms can be sent according to different water levels, the convenience of water level monitoring and alarming is improved, and the recording mechanism can draw lines on the recording paper with the rising water level, so as to record the change of the water level after the water level rises, and the monitoring personnel can check the change of the water level when the water level rises after the alarm.

Description

Technical Field

[0001] This invention belongs to the field of water level monitoring technology, and specifically relates to a water level monitoring and alarm device for hydropower stations. Background Technology

[0002] Hydropower station water level monitoring and alarm devices are used to detect and alarm on water levels in hydropower stations, and are crucial for the power supply and water resource management of these stations. The power generation of a hydropower station is closely related to the water level difference; by monitoring the water level, the optimal water level difference can be ensured, thereby improving power generation efficiency. When the water level is too high, the hydropower station water level monitoring and alarm device will issue an alarm to remind monitoring personnel, helping to avoid energy waste caused by excessively high water levels and achieving efficient utilization of water resources.

[0003] Chinese Patent Publication No. CN117109700B discloses a hydropower station water level monitoring and alarm device. It includes an energy storage component comprising a solar panel, a monitoring camera mounted outside the solar panel, and a distribution box mounted outside the solar panel; a transmission component comprising a float mounted outside the solar panel and a transmission rod mounted outside the float; a correction component comprising an outer disc mounted outside the transmission rod, an outer chuck movably mounted inside the outer disc, an inner disc movably mounted inside the outer disc, and an inner chuck mounted on the outer wall of the inner disc; and a notification component comprising a striking block mounted outside the inner disc and a sound-emitting disc mounted outside the striking block. When the water level of the hydropower station rises, the float changes position in the river channel, causing the rotating shaft to rotate, thereby causing the striking block to strike the sound-emitting disc, emitting a sound to provide water level warning information to the hydropower station staff.

[0004] However, in the above-mentioned hydropower station water level monitoring and alarm device, the frequency of the striking block striking the sound plate is fixed during use. As a result, the device can only issue one alarm after the water level rises, and cannot issue different alarms according to different water levels. This leads to insufficient convenience of water level monitoring and alarm. In addition, the device is not equipped with a water level height recording mechanism, so it is difficult to record height change data after the water level rises, making it inconvenient for monitoring personnel to check the water level changes during the rise after the alarm is triggered. Summary of the Invention

[0005] The purpose of this invention is to provide a hydropower station water level monitoring and alarm device. This device uses a floating mechanism to align different rotating wheels with a sliding rod as the water level rises, causing the number of times the striking hammer strikes the bell to change with the water level. Compared to a system that can only issue one alarm after a water level rise, this device allows for different alarms to be issued based on different water levels, improving the convenience of water level monitoring and alarms. Furthermore, a recording mechanism allows a drawing pen to draw lines on recording paper as the water level rises, recording the changes in water level height after the rise, facilitating monitoring personnel to check the water level changes during the rise after an alarm is triggered.

[0006] The specific technical solution adopted by this invention is as follows: A hydropower station water level monitoring and alarm device, comprising: case; A floating mechanism is slidably disposed in a housing. The floating mechanism includes a lifting plate that is slidably connected to the inside of the housing in a vertical direction. A lifting rod is slidably connected to the lifting plate in a vertical direction. A push plate is fixedly connected to the lifting rod. The push plate is located below the lifting plate. A float is fixedly installed at the lower end of the lifting rod. A drawing pen is fixedly installed at the upper end of the lifting rod. An alarm mechanism is housed within a housing. The alarm mechanism includes a rotating shaft rotatably mounted on a lifting plate. Several rotating wheels are fixedly connected vertically to the rotating shaft. Several inclined blocks are fixedly mounted circumferentially on the outer sides of the rotating wheels. The number of inclined blocks on the rotating wheels increases sequentially from top to bottom. A sliding rod is slidably connected to the housing. The end of the sliding rod near the rotating wheels abuts against the inclined blocks. The end of the sliding rod away from the rotating wheels extends outside the housing and is fixedly connected to a striking hammer. A striking bell is positioned between the striking hammer and the outer wall of the housing and is fixedly connected to the housing. A first spring connects the sliding rod to the housing. A recording mechanism is disposed in a housing. The recording mechanism includes a writing pad fixedly connected to the inner wall of the housing. Rotating rollers are provided on both sides of the writing pad. Recording paper is provided on the side of the writing pad near the drawing pen. The two ends of the recording paper are respectively wound and connected to the two rotating rollers. A connecting shaft is rotatably connected to the inner wall of the housing. The connecting shaft is drivenly connected to the rotating rollers. A first transmission wheel is rotatably mounted on the lifting plate. The first transmission wheel is movably engaged with the connecting shaft in the vertical direction. The first transmission wheel is drivenly connected to the rotating shaft. As the water level rises, the more inclined blocks there are, the higher the rotating wheel and the sliding rod are at the same height, resulting in more strikes from the hammer to the bell during one rotation of the rotating wheel. The rising water level causes the drawing pen to move vertically on the recording paper, and also causes the first transmission wheel to engage with the connecting shaft. The rotating shaft drives the rotating wheel to rotate while also driving the rotating roller to rotate, causing the recording paper to move relative to the drawing pen in the horizontal direction.

[0007] As a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, wherein: a slider is fixedly connected to one end of the inclined block near the rotating wheel, and a plurality of first sliding grooves are opened on the outer side of the rotating wheel along the circumferential direction, the first sliding grooves are slidably connected to the slider in the vertical direction, and the first sliding grooves of two adjacent rotating wheels are aligned with each other in the vertical direction.

[0008] In a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, the sliding rod includes a first rod body slidably connected to the housing, and a second rod body is threadedly connected along the axial direction at one end of the first rod body near the inclined block, and the end of the second rod body abuts against the inclined block.

[0009] As a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, the first transmission wheel has a plurality of second sliding grooves circumferentially opened inside, and the outer side of the connecting shaft is fixedly connected to a first sliding strip circumferentially, and the first sliding strip and the second sliding groove slide in a vertical direction.

[0010] In a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, a first gear is fixedly connected to the connecting shaft, and a second gear meshes with both sides of the first gear. The two second gears are respectively fixedly connected to two rotating rollers. A second transmission wheel is fixedly connected to the rotating shaft, and a transmission belt connects the second transmission wheel and the first transmission wheel. A motor is fixedly connected to the lifting plate, and the output end of the motor is fixedly connected to the rotating shaft.

[0011] In a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, the lifting rod includes a third rod body slidably connected to the lifting plate in the vertical direction, a fourth rod body slidably connected to the lower end of the third rod body, the fourth rod body being fixedly connected to the float, a first limiting hole being provided on the third rod body, a second limiting hole being provided on the fourth rod body in the vertical direction, and a limiting pin being slidably connected inside the first limiting hole and the second limiting hole.

[0012] As a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, wherein: the outer wall of the float is fixedly connected with an elastic part, and an air inlet is provided on the float.

[0013] In a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, pressure rollers are rotatably connected to both sides of the writing pad, and the pressure rollers are located on the side of the recording paper away from the writing pad.

[0014] In a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, a rotating cylinder is provided between the first transmission wheel and the lifting plate. The upper end of the rotating cylinder is fixedly connected to the first transmission wheel, and a flange is fixedly connected to the lower end of the rotating cylinder. The flange is rotatably engaged with the lifting plate. A retaining ring is provided above the flange, and the retaining ring is fixedly connected to the lifting plate.

[0015] In a preferred embodiment of the hydropower station water level monitoring and alarm device of the present invention, the slide rod is slidably connected to a slide cylinder, the slide cylinder is fixedly connected to the outer wall of the housing, a third slide groove is provided on the slide cylinder, and a slide column is fixedly connected to the outer side of the slide rod, the slide column and the third slide groove are slidably engaged along the axial direction.

[0016] The technical effects achieved by this invention are as follows: This invention employs a floating mechanism and an alarm mechanism. The floating mechanism aligns different rotating wheels with the sliding rod as the water level rises, causing the number of times the striking hammer strikes the bell to change with the water level. The float moves upward as the water level rises, bringing the rotating wheel and the sliding rod to the same height. The rotating shaft drives the rotating wheel to rotate, causing the inclined block to push the sliding rod along the shell. This causes the striking hammer to move away from the bell and strike the bell again under the elastic action of the first spring, thus emitting an alarm sound. When the water level rises to different heights, different rotating wheels and the sliding rod are at the same height, resulting in a different number of inclined blocks pushing the sliding rod to slide during one rotation of the rotating shaft. This results in a different number of alarm sounds per unit time, thus issuing different alarms. Compared to the method of only issuing one alarm when the water level rises, this method facilitates issuing different alarms according to different water levels, improving the convenience of water level monitoring and alarm. This invention employs a recording mechanism that allows a drawing pen to draw lines on recording paper as the water level rises, recording changes in water level height. The drawing pen moves upwards with the rising water level and draws lines vertically on the recording paper. A lifting plate also moves upwards with the rising water level, engaging the first transmission wheel with the connecting shaft. The rotating shaft drives the rotating wheel, which in turn drives the first transmission wheel and the connecting shaft. The connecting shaft then drives the rotating roller, causing the recording paper to be rolled from one roller to another. This allows the drawing pen to draw lines horizontally on the recording paper, thus recording changes in water level height as the water level rises. This facilitates monitoring personnel's inspection of water level changes during an alarm. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the shell and the striking bell in this invention; Figure 3 This is a cross-sectional view of the housing at one angle in this invention; Figure 4 This is a cross-sectional view of the housing from another angle in this invention; Figure 5 This is a cross-sectional schematic diagram of the alarm mechanism and the housing in this invention; Figure 6 This is a schematic diagram of the structure of the drawing pen and the recording paper in this invention; Figure 7 This is a schematic diagram of the structure of the second gear and the first gear in this invention; Figure 8 This is a cross-sectional schematic diagram of the drawing pen and recording paper in this invention; Figure 9 This is a cross-sectional schematic diagram of the inclined block and the sliding rod in this invention; Figure 10 This is a schematic diagram of the floating mechanism in this invention; Figure 11 In this invention Figure 10 Enlarged view of point A in the middle; Figure 12 This is a cross-sectional schematic diagram of the first transmission wheel and the rotating cylinder in this invention; Figure 13 This is a schematic diagram of the slide rod and slide cylinder in this invention.

[0018] The attached diagram lists the components represented by each number as follows: 10. Housing; 11. Slide cylinder; 111. Third slide groove; 20. Floating mechanism; 21. Lifting plate; 22. Lifting rod; 221. Push plate; 222. Third rod body; 223. Fourth rod body; 224. First limiting hole; 225. Second limiting hole; 226. Limiting pin; 23. Float; 231. Elastic part; 232. Air inlet; 24. Marking pen; 30. Alarm mechanism; 31. Rotating shaft; 311. Second transmission wheel; 32. Rotating wheel; 321. First slide groove; 33. Inclined block; 331. 34. Sliding block; 341. First rod body; 342. Second rod body; 343. Sliding column; 35. Striking hammer; 36. Striking bell; 37. First spring; 40. Recording mechanism; 41. Writing pad; 42. Rotating roller; 421. Second gear; 43. Recording paper; 44. Connecting shaft; 441. First sliding bar; 442. First gear; 45. First transmission wheel; 451. Second slide groove; 46. Pressure roller; 51. Transmission belt; 52. Motor; 53. Rotating cylinder; 531. Flange; 54. Retaining ring. Detailed Implementation

[0019] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention. Example

[0020] like Figures 1 to 13The first embodiment of the present invention is shown, which provides a hydropower station water level monitoring and alarm device, including a housing 10; a floating mechanism 20, which is slidably disposed in the housing 10, the floating mechanism 20 including a lifting plate 21 slidably connected vertically inside the housing 10, a lifting rod 22 slidably connected vertically to the lifting plate 21, a push plate 221 fixedly connected to the lifting rod 22, the push plate 221 being located below the lifting plate 21, a float 23 fixedly installed at the lower end of the lifting rod 22, and a drawing pen 24 fixedly installed at the upper end of the lifting rod 22; and an alarm mechanism 30, which is disposed in the housing 10, the alarm mechanism 30 including a rotating shaft 31 rotatably mounted on the lifting plate 21, a plurality of rotating wheels 32 fixedly connected vertically to the rotating shaft 31, a plurality of inclined blocks 33 fixedly installed circumferentially on the outer side of the rotating wheels 32, the number of inclined blocks 33 on the plurality of rotating wheels 32 increasing sequentially from top to bottom, and a sliding rod 34 slidably connected to the housing 10. One end of the slide bar 34 near the rotating wheel 32 abuts against the inclined block 33, and the other end of the slide bar 34 away from the rotating wheel 32 extends outside the housing 10 and is fixedly connected to a striking hammer 35. A striking bell 36 is provided between the striking hammer 35 and the outer wall of the housing 10 and is fixedly connected to the housing 10. A first spring 37 connects the slide bar 34 and the housing 10. A recording mechanism 40 is disposed in the housing 10 and includes a writing pad fixedly connected to the inner wall of the housing 10. The writing pad 41 has rotating rollers 42 on both sides. The writing pad 41 has a recording paper 43 on the side near the drawing pen 24. The two ends of the recording paper 43 are respectively wound and connected to the two rotating rollers 42. A connecting shaft 44 is rotatably connected to the inner wall of the housing 10. The connecting shaft 44 is connected to the rotating rollers 42 in a driving connection. A first transmission wheel 45 is rotatably installed on the lifting plate 21. The first transmission wheel 45 is movably engaged with the connecting shaft 44 in the vertical direction. The first transmission wheel 45 is connected to the rotating shaft 31 in a driving connection.

[0021] It should be noted that a column is fixedly connected to the outer side of the housing 10, and the bottom of the column is fixedly connected to the ground near the water. A distribution box is fixedly installed on the column. Both the column and the distribution box are existing technologies and will not be described in detail here. The striking bell 36 is made of metal. The striking hammer 35 strikes the striking bell 36 to produce sound, which is a mature existing technology. The striking hammer 35 strikes the striking bell 36, causing the metal to vibrate and produce sound, which is used to sound an alarm. This will not be described in detail here. Several water passages are opened on the inner wall of the housing 10 near the float 23. The water passages allow water to flow through so that the water level inside and outside the housing 10 is the same, which facilitates the float 23 to float upward when the water level rises. A screen is installed below the float 23 and is fixedly connected to the housing 10. The screen is used to prevent foreign objects in the water from entering the housing 10. Internally, to reduce the impact of foreign objects on the float 23, a slide rail is provided between the lifting plate 21 and the inner wall of the housing 10. The lifting plate 21 and the housing 10 are slidably connected by the slide rail. Limit plates are provided at both ends of the lifting plate 21. The limit plates are fixedly connected to the inner wall of the housing 10 and are used to limit the lifting plate 21 in the vertical direction to prevent the lifting plate 21 from falling. An inclined surface is provided on the side of the slide rod 34 near the rotation direction. The inclined surface abuts against the end of the slide rod 34 to push the slide rod 34 to slide. In the initial state, the water level has not risen to the height required for alarm. At this time, the bottom ends of the lifting plate 21 are in contact with the limit plates. Several rotating wheels 32 are located below the inclined block 33. The first transmission wheel 45 is not engaged with the connecting shaft 44. The rotating shaft 31 keeps rotating, and the float 23 is located in the water.

[0022] In the initial state of use, the first transmission wheel 45 is not engaged with the connecting shaft 44. After the rotating shaft 31 rotates, it does not drive the connecting shaft 44 to rotate via the first transmission wheel 45. After the rotating shaft 31 drives the rotating wheel 32 to rotate, it does not cause the inclined block 33 to push the sliding rod 34. When the water level rises, the float 23 moves upward along the shell 10 under the action of buoyancy. The float 23 drives the lifting rod 22 to move upward relative to the lifting plate 21, so that the push plate 221 contacts the bottom of the lifting plate 21. After the lifting rod 22 continues to move upward, it drives the lifting plate 21 to move upward together. After the lifting plate 21 moves upward, it drives the rotating shaft 31 to move upward. The rotating shaft 31 drives the sliding rod 34 to move upward. Several rotating wheels 32 move upwards, causing them to pass sequentially from top to bottom over the slide bar 34. When one of the rotating wheels 32 is at the same height as the slide bar 34, the rotating shaft 31 rotates, causing the rotating wheel 32 and the slide bar 34 to rotate. This causes the inclined block 33 to push the slide bar 34 outwards. At this time, the striking hammer 35 moves away from the striking bell 36, and the first spring 37 is compressed. When the inclined block 33 disengages from the slide bar 34, the first spring 37, under its elastic action, pushes the slide bar 34 to move closer to the rotating wheel 32. This causes the slide bar 34 to drive the striking hammer 35 to strike the striking bell 36, thus emitting an alarm sound. Due to the inclined blocks on the several rotating wheels 32... The number of ramps 33 increases sequentially from top to bottom, so that as the water level rises, the more ramps 33 there are, the higher the rotating wheel 32 and the slide bar 34 are at the same height. The more times the slide bar 34 is pushed per unit time, the more times the alarm sounds. This results in different alarm sounds at different water level rises, with more sounds per unit time at higher water levels, thus issuing different alarms. Compared to the previous method of issuing only one alarm after the water level rises, this method facilitates issuing different alarms according to different water level heights, improving the convenience of water level monitoring and alarm. Furthermore, the rotation of the rotating shaft 31 also drives the first transmission wheel 45 to rotate. When the lifting rod 22 passes through the push plate 22... When the lifting plate 21 moves upward, the lifting plate 21 drives the first transmission wheel 45 to engage with the connecting shaft 44, causing the first transmission wheel 45 to rotate and drive the connecting shaft 44 to rotate. The connecting shaft 44 then drives the two rotating rollers 42 to rotate, causing the recording paper 43 to be rolled from one rotating roller 42 to the other rotating roller 42. This allows the drawing pen 24 to draw lines on the recording paper 43 in the horizontal direction. As the water level rises, the lifting rod 22 drives the drawing pen 24 to draw lines on the recording paper 43 in the vertical direction. This allows the drawing pen 24 to draw lines on the recording paper 43 to record the changes in water level height, so that monitoring personnel can check the changes in water level during the rise after an alarm is triggered.

[0023] When the recording mechanism 40 needs to record changes in the water level rise, since the installation height of the recording paper 43 is fixed, the distance between the lower end of the recording paper 43 and the bottom of the water can be obtained. Also, since the distance between the drawing pen 24 and the water surface is fixed when the float 23 floats in the water, the distance between the drawing pen 24 and the water surface can be obtained. When the drawing pen 24 draws a line on the recording paper 43, the distance between a point on the line and the lower end of the recording paper 43, plus the distance between the lower end of the recording paper 43 and the bottom of the water, gives the distance between that point and the bottom. Subtracting the distance between the drawing pen 24 and the water surface from the distance between that point and the bottom gives the distance between the water surface and the bottom at that moment, i.e., the water level height. In this process, only the distance between a point on the line and the lower end of the recording paper 43 changes. The water level height can be obtained through the above simple calculations, allowing monitoring personnel to understand the changes in the water level rise by observing the changes in the height of the lines on the recording paper 43. Further details are omitted here. Example

[0024] Reference Figures 1 to 13 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0025] like Figure 5 As shown, a slider 331 is fixedly connected to one end of the inclined block 33 near the rotating wheel 32. Several first grooves 321 are opened on the outer side of the rotating wheel 32 along the circumferential direction. The first grooves 321 and the slider 331 are slidably connected in the vertical direction. The first grooves 321 of two adjacent rotating wheels 32 are aligned in the vertical direction.

[0026] It should be noted that a baffle is provided below the bottommost rotating wheel 32. The diameter of the baffle is larger than that of the rotating wheel 32. The baffle is used to prevent the slider 331 from falling and disengaging from the first slide groove 321.

[0027] According to the above structure, the slider 331 cooperates with the first groove 321 to facilitate the disassembly and assembly of the inclined block 33. In the same rotating wheel 32, by inserting several sliders 331 into several first grooves 321 with different intervals, the distance between the inclined blocks 33 distributed around the circumference of the rotating wheel 32 is adjusted, thereby adjusting the time interval of the sliding rod 34 pushed by two adjacent inclined blocks 33, thereby adjusting the time interval of the striking hammer 35 striking the striking bell 36, thus facilitating the adjustment of the time interval of the alarm sound.

[0028] like Figure 13 As shown, the slide bar 34 includes a first rod 341 slidably connected to the housing 10, and a second rod 342 is axially threaded to one end of the first rod 341 near the inclined block 33. The end of the second rod 342 abuts against the inclined block 33.

[0029] According to the above structure, since the second rod 342 is threadedly connected to the first rod 341, the second rod 342 rotates along the first rod 341 while also moving along the first rod 341, so as to adjust the distance between the second rod 342 and the first rod 341, thereby adjusting the overall length of the slide rod 34. When the inclined block 33 pushes the slide rod 34, the distance between the slide rod 34 and the inclined surface of the inclined block 33 is adjusted. When this distance increases, the distance that the inclined block 33 pushes the slide rod 34 to slide decreases, so that the degree of compression of the first spring 37 decreases. The first spring 37 reduces the force of the hammer 35 striking the bell 36, thus reducing the alarm sound. When this distance decreases, the distance that the inclined block 33 pushes the slide rod 34 to slide increases, so that the degree of compression of the first spring 37 increases. The first spring 37 increases the force of the hammer 35 striking the bell 36, thus increasing the alarm sound, thereby facilitating the adjustment of the alarm sound volume.

[0030] like Figure 12 As shown, the first transmission wheel 45 has several second sliding grooves 451 circumferentially opened inside, and the outer side of the connecting shaft 44 is fixedly connected to the first sliding strip 441 circumferentially. The first sliding strip 441 and the second sliding grooves 451 slide in a vertical direction.

[0031] According to the above structure, when the water level has not risen, the first slide bar 441 is not inserted into the second slide groove 451, so that when the rotating shaft 31 drives the first transmission wheel 45 to rotate, it does not drive the connecting shaft 44 to rotate together. When the water level rises and the first transmission wheel 45 moves upward along the connecting shaft 44, the first slide bar 441 is inserted into the second slide groove 451, so that the rotating shaft 31 drives the first transmission wheel 45 to rotate and also drives the connecting shaft 44 to rotate together, thereby driving the recording paper 43 to move. This makes it convenient for the recording mechanism 40 not to be used when the water level has not risen, but to be used when the water level rises, thus reducing the waste of recording paper 43.

[0032] like Figure 6 , Figure 7 , Figure 8 and Figure 10 As shown, a first gear 442 is fixedly connected to the connecting shaft 44, and a second gear 421 meshes with both sides of the first gear 442. The two second gears 421 are fixedly connected to two rotating rollers 42 respectively. A second transmission wheel 311 is fixedly connected to the rotating shaft 31. A transmission belt 51 is connected between the second transmission wheel 311 and the first transmission wheel 45. A motor 52 is fixedly connected to the lifting plate 21, and the output end of the motor 52 is fixedly connected to the rotating shaft 31.

[0033] According to the above structure, after the motor 52 is working, the output end drives the rotating shaft 31 to rotate. The rotating shaft 31 drives the rotating wheel 32 to rotate and also drives the second transmission wheel 311 to rotate. The second transmission wheel 311 drives the first transmission wheel 45 to rotate through the transmission belt 51. The first transmission wheel 45 drives the first gear 442 to rotate through the connecting shaft 44. The first gear 442 drives the rotating roller 42 to rotate through the second gear 421, thereby facilitating the winding of the recording paper 43 from one rotating roller 42 to another rotating roller 42.

[0034] like Figure 11 As shown, the lifting rod 22 includes a third rod 222 that is slidably connected to the lifting plate 21 in the vertical direction. A fourth rod 223 is slidably connected to the lower end of the third rod 222. The fourth rod 223 is fixedly connected to the float 23. A first limiting hole 224 is provided on the third rod 222. A second limiting hole 225 is provided on the fourth rod 223 in the vertical direction. A limiting pin 226 is slidably connected inside the first limiting hole 224 and the second limiting hole 225.

[0035] According to the above structure, when it is necessary to adjust the overall length of the lifting rod 22, the limiting pin 226 is pulled out from the first limiting hole 224 and the second limiting hole 225, and the fourth rod 223 is moved vertically on the third rod 222 so that the first limiting hole 224 is aligned with the second limiting hole 225 at a suitable position. The limiting pin 226 is then inserted into the first limiting hole 224 and the second limiting hole 225 to limit the fourth rod 223 and the third rod 222, thereby adjusting the overall length of the lifting rod 22. This adjusts the distance between the drawing pen 24 and the float 23, and further adjusts the distance between the drawing pen 24 and the water surface. This facilitates the installation of the alarm device and adapts to different water levels at the initial state, improving its applicability.

[0036] like Figure 11 As shown, the outer wall of the float 23 is fixedly connected to an elastic part 231, and an air inlet 232 is provided on the float 23.

[0037] It should be noted that the interior of the float 23 is hollow, and the elastic part 231 is made of an elastic material.

[0038] According to the above structure, the inside of the float 23 is inflated or deflated through the air inlet 232, causing the elastic part 231 to expand outward or contract inward, thereby adjusting the volume of liquid displaced by the float 23 and thus adjusting the buoyancy of the float 23 in the water. This adjusts the distance between the drawing pen 24 and the water surface when the float 23 is floating in the water, making it easier to adapt to different water levels at the initial state when installing this alarm device and improving its applicability.

[0039] like Figure 6 and Figure 8As shown, pressure rollers 46 are rotatably connected to both sides of the writing pad 41, and the pressure rollers 46 are located on the side of the recording paper 43 away from the writing pad 41.

[0040] According to the above structure, the pressure roller 46 is attached to the recording paper 43, which makes it easier to press the recording paper 43 onto the writing pad 41, making the recording paper 43 flatter on the writing pad 41, and making it easier for the drawing pen 24 to draw lines along the recording paper 43.

[0041] like Figure 12 As shown, a rotating cylinder 53 is provided between the first transmission wheel 45 and the lifting plate 21. The upper end of the rotating cylinder 53 is fixedly connected to the first transmission wheel 45, and the lower end of the rotating cylinder 53 is fixedly connected to a flange 531. The flange 531 is rotatably engaged with the lifting plate 21. A retaining ring 54 is provided above the flange 531, and the retaining ring 54 is fixedly connected to the lifting plate 21.

[0042] It should be noted that the inner diameter of the retaining ring 54 is smaller than the outer diameter of the flange 531. The retaining ring 54 is used to prevent the flange 531 from separating from the lifting plate 21. Both the rotating cylinder 53 and the lifting plate 21 have through holes inside. The diameter of the through hole is larger than the overall diameter of the first slide bar 441 and the connecting shaft 44, so that the first slide bar 441 and the connecting shaft 44 can pass through the recording paper 43 and the lifting plate 21.

[0043] According to the above structure, the rotating cylinder 53 and the lifting plate 21 are rotatably connected through the flange 531 and the retaining ring 54, and the first transmission wheel 45 and the lifting plate 21 are rotatably mounted together through the rotating cylinder 53.

[0044] like Figure 5 and Figure 13 As shown, a slide cylinder 11 is slidably connected to the outside of the slide rod 34. The slide cylinder 11 is fixedly connected to the outer wall of the housing 10. A third slide groove 111 is provided on the slide cylinder 11. A slide column 343 is fixedly connected to the outside of the slide rod 34. The slide column 343 and the third slide groove 111 slide together axially.

[0045] It should be noted that the slide rod 34 and the housing 10 are slidably mounted together via the slide cylinder 11.

[0046] According to the above structure, the sliding column 343 cooperates with the third sliding groove 111, making the sliding rod 34 slide along the sliding cylinder 11 more stable.

[0047] The working principle of this invention is as follows: After the water level rises, the float 23 drives the lifting plate 21 and the drawing pen 24 to move upward. The lifting plate 21 then drives the rotating shaft 31 and the first transmission wheel 45 to move upward. The rotating shaft 31 then drives the rotating wheel 32 to the same height as the sliding rod 34. The rotating shaft 31 rotates, causing the rotating wheel 32 to rotate. The rotating wheel 32 drives the inclined block 33 to push the sliding rod 34 to slide. Under the elastic action of the first spring 37, the striking hammer 35 strikes the striking bell 36, thus emitting an alarm sound. Because the number of inclined blocks 33 on different rotating wheels 32 varies, the number of alarm sounds differs depending on the water level rise. Compared to a system where only one alarm can be emitted after the water level rises, this method... Different alarms are issued according to different water levels, improving the convenience of water level monitoring and alarm. After the first transmission wheel 45 moves upward, it engages with the connecting shaft 44. After the rotating shaft 31 rotates, it also drives the first transmission wheel 45 to rotate, so that the first transmission wheel 45 drives the rotating roller 42 to rotate through the connecting shaft 44. This causes the recording paper 43 to be rolled from one rotating roller 42 to another rotating roller 42, so that the drawing pen 24 draws a line on the recording paper 43 in the horizontal direction. Since the drawing pen 24 also draws a line on the recording paper 43 in the vertical direction after moving upward, the drawing pen 24 draws lines on the recording paper 43 to record the height change of the water level, which makes it convenient for monitoring personnel to check the water level change when the water level rises after the alarm is triggered.

[0048] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A hydropower station water level monitoring and alarm device, characterized in that, include: The housing (10) has a lifting plate (21) slidably connected inside the housing (10). The bottom of the lifting plate (21) is movably connected to a floating part. The top of the floating part can movably pass through the lifting plate (21) and is connected to a drawing pen (24). The recording mechanism (40) includes recording paper (43) and two oppositely arranged rotating rollers (42), with the two ends of the recording paper (43) respectively wound around the two rotating rollers (42); An alarm mechanism (30) includes a sound-emitting mechanism and a rotating shaft (31). Several rotating wheels (32) are fixedly connected to the rotating shaft (31) in the vertical direction. Several inclined blocks (33) are fixedly installed on the outer side of the rotating wheels (32) in the circumferential direction. The number of inclined blocks (33) on the several rotating wheels (32) increases from top to bottom, and the sound-emitting mechanism is adapted to the inclined blocks (33). When the floating part changes with the water level, the drawing pen (24) moves vertically with the floating part. When the water level rises to the warning level, the two rotating rollers (42) are connected to the rotating shaft (31) to enable the alarm mechanism (30) and the recording mechanism (40) to operate. As the water level gradually rises, the more rotating wheels (32) with the inclined blocks (33) correspond to the sound-emitting mechanism, the more times the rotating wheels (32) are triggered by the sound-emitting mechanism during one rotation. The sound-generating mechanism includes a slide rod (34) slidably connected to the housing (10). The end of the slide rod (34) near the rotating wheel (32) abuts against the inclined block (33). The end of the slide rod (34) away from the rotating wheel (32) extends out of the housing (10) and is fixedly connected to a striking hammer (35). A striking bell (36) is provided between the striking hammer (35) and the outer wall of the housing (10). The striking bell (36) is fixedly connected to the housing (10). A first spring (37) is connected between the slide rod (34) and the housing (10). The slide rod (34) includes a first rod body (341) slidably connected to the housing (10). The end of the first rod body (341) near the inclined block (33) is axially threaded to a second rod body (342). The end of the second rod body (342) abuts against the inclined block (33). The recording mechanism (40) further includes a writing pad (41) fixedly connected to the inner wall of the housing (10). The writing pad (41) is located between the two rotating rollers (42). The rotating rollers (42) are rotatably connected to the inner wall of the housing (10). A connecting shaft (44) is rotatably connected to the inner wall of the housing (10). The connecting shaft (44) is drive-connected to the rotating rollers (42). A first transmission wheel (45) is rotatably mounted on the lifting plate (21). The first transmission wheel (45) is movably engaged with the connecting shaft (44) in the vertical direction. The first transmission wheel (45) is drive-connected to the rotating shaft (31). The transmission wheel (45) has several second sliding grooves (451) circumferentially opened inside. The outer side of the connecting shaft (44) is fixedly connected to a first sliding strip (441) circumferentially. The first sliding strip (441) and the second sliding groove (451) slide in a vertical direction. The connecting shaft (44) is fixedly connected to a first gear (442). The first gear (442) is meshed with second gears (421) on both sides. The two second gears (421) are fixedly connected to two rotating rollers (42) respectively. The rotating shaft (31) is fixedly connected to a second transmission wheel (311). The second transmission wheel (311) and the first transmission wheel (45) are connected by a transmission belt (51). The lifting plate (21) is fixedly connected to a motor (52). The output end of the motor (52) is fixedly connected to the rotating shaft (31).

2. The hydropower station water level monitoring and alarm device according to claim 1, characterized in that: The floating part includes a lifting rod (22) that is slidably connected to the lifting plate (21) in the vertical direction. A push plate (221) is fixedly connected to the lifting rod (22). The push plate (221) is located below the lifting plate (21). A float (23) is fixedly installed at the lower end of the lifting rod (22). The drawing pen (24) is fixedly connected to the upper end of the lifting rod (22).

3. The hydropower station water level monitoring and alarm device according to claim 1, characterized in that: The inclined block (33) is fixedly connected to a slider (331) at one end near the rotating wheel (32). The outer side of the rotating wheel (32) is provided with a plurality of first sliding grooves (321) along the circumferential direction. The first sliding grooves (321) and the sliders (331) are slidably connected in the vertical direction. The first sliding grooves (321) of two adjacent rotating wheels (32) are aligned in the vertical direction.

4. The hydropower station water level monitoring and alarm device according to claim 1, characterized in that: A first gear (442) is fixedly connected to the connecting shaft (44). A second gear (421) meshes with both sides of the first gear (442). The two second gears (421) are fixedly connected to two rotating rollers (42) respectively. A second transmission wheel (311) is fixedly connected to the rotating shaft (31). A transmission belt (51) is connected between the second transmission wheel (311) and the first transmission wheel (45). A motor (52) is fixedly connected to the lifting plate (21). The output end of the motor (52) is fixedly connected to the rotating shaft (31).

5. The hydropower station water level monitoring and alarm device according to claim 2, characterized in that: The lifting rod (22) includes a third rod (222) that is slidably connected to the lifting plate (21) in the vertical direction. A fourth rod (223) is slidably connected to the lower end of the third rod (222). The fourth rod (223) is fixedly connected to the float (23). A first limiting hole (224) is provided on the third rod (222). A second limiting hole (225) is provided on the fourth rod (223) in the vertical direction. A limiting pin (226) is slidably connected inside the first limiting hole (224) and the second limiting hole (225).

6. The hydropower station water level monitoring and alarm device according to claim 1, characterized in that: A rotating cylinder (53) is provided between the first transmission wheel (45) and the lifting plate (21). The upper end of the rotating cylinder (53) is fixedly connected to the first transmission wheel (45), and the lower end of the rotating cylinder (53) is fixedly connected to a flange (531). The flange (531) is rotatably engaged with the lifting plate (21). A retaining ring (54) is provided above the flange (531), and the retaining ring (54) is fixedly connected to the lifting plate (21).

7. The hydropower station water level monitoring and alarm device according to claim 1, characterized in that: The slide rod (34) is slidably connected to a slide cylinder (11), which is fixedly connected to the outer wall of the housing (10). A third slide groove (111) is provided on the slide cylinder (11), and a slide column (343) is fixedly connected to the outer side of the slide rod (34). The slide column (343) and the third slide groove (111) slide together axially.

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