Hydropower station water level monitoring alarm device

Abstract

The invention belongs to the technical field of water level monitoring, and particularly relates to a hydropower station water level monitoring alarm device which comprises a shell. The floating mechanism is arranged in the shell in a sliding manner; the alarm mechanism is arranged in the shell; and the recording mechanism is arranged in the shell. The floating mechanism can drive different rotating wheels to be aligned with the sliding rod along with rising of the water level, so that the sound frequency of the knocking bell hit by the knocking hammer is changed along with different water levels, compared with the mode that only one alarm can be given out after the water level rises, different alarms can be conveniently given out according to different heights of the water level, and the water level alarm effect is improved. The water level monitoring and alarming convenience is improved, a line drawing pen can draw a line on recording paper through a recording mechanism along with the rising of the water level, the height change of the water level after the water level rises is recorded, and monitoring personnel can conveniently check the water level change condition when the water level rises after alarming.

Description

Technical Field

[0001] The present invention belongs to the technical field of water level monitoring, and particularly relates to a water level monitoring and alarming device for a hydropower station. Background Art

[0002] A water level monitoring and alarming device for a hydropower station is a device used to detect and alarm the water level of a hydropower station, which is crucial for the power supply and water resource management of the hydropower station. The power generation of a hydropower station is closely related to the water level difference. Through water level monitoring, the optimal water level difference can be ensured, thereby improving the power generation efficiency. When the water level is too high, the water level monitoring and alarming device of the hydropower station issues an alarm to remind the monitoring personnel, which helps to avoid energy waste caused by too high water level and realizes the efficient utilization of water energy resources.

[0003] Chinese Patent Publication No. CN117109700B discloses a water level monitoring and alarming device for a hydropower station. By setting an energy storage component, including a solar panel, a monitoring camera arranged outside the solar panel, and a distribution box arranged outside the solar panel; and a conduction component, including a floating block arranged outside the solar panel and a transmission rod arranged outside the floating block; and a correction component, including an outer disc arranged outside the transmission rod, an outer chuck movably arranged inside the outer disc, an inner disc movably arranged inside the outer disc, and an inner chuck arranged on the outer wall of the inner disc; and a prompt component including a knocking block arranged outside the inner disc and a sounding disc arranged outside the knocking block. When the water level of the hydropower station rises, the position of the floating block generates a height change in the river channel, causing the rotating shaft to rotate, so that the knocking block knocks the sounding disc, making a sound to provide water level early warning information for the staff of the hydropower station.

[0004] However, in the process of using the above water level monitoring and alarming device for a hydropower station, the frequency of the knocking block knocking the sounding disc is fixed, resulting in that the device can only issue one kind of alarm after the water level rises, and cannot issue different alarms according to different water levels, lacking the convenience of water level monitoring and alarming. Moreover, the device is not provided with a water level height recording mechanism, and it is difficult to leave height change data after the water level rises, which is not convenient for the monitoring personnel to check the water level change during the rise after the alarm. Summary of the Invention

[0005] The purpose of the present invention is to provide a water level monitoring and alarming device for a hydropower station, which can drive different rotating wheels to align with the sliding rod as the water level rises through a floating mechanism, so that the number of sounds of the knocking hammer hitting the knocking bell changes with different water levels. Compared with the method of only issuing one kind of alarm after the water level rises, it is convenient to issue different alarms according to different water levels, improving the convenience of water level monitoring and alarming. And it can make the drawing pen draw lines on the recording paper as the water level rises through a recording mechanism to record the height change of the water level after the water level rises, which is convenient for the monitoring personnel to check the water level change during the rise after the alarm.

[0006] The technical solution adopted by the present invention is specifically as follows: A water level monitoring and alarming device for a hydropower station, comprising: A housing; A floating mechanism, the floating mechanism is slidably arranged in the housing. The floating mechanism includes a lifting plate slidably connected to the inside of the housing in the vertical direction. A lifting rod is slidably connected to the lifting plate in the vertical direction. A push plate is fixedly connected to the lifting rod. The push plate is located below the lifting plate. A floating block 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 alarming mechanism, the alarming mechanism is arranged in the housing. The alarming mechanism includes a rotating shaft rotatably installed on the lifting plate. A plurality of rotating wheels are fixedly connected to the rotating shaft in the vertical direction. A plurality of inclined blocks are fixedly installed on the outer side of the rotating wheel along the circumferential direction. The number of inclined blocks on a plurality of the rotating wheels increases sequentially from top to bottom. A sliding rod is slidably connected to the housing. One end of the sliding rod close to the rotating wheel is in abutting cooperation with the inclined block. The other end of the sliding rod far from the rotating wheel extends out of the housing and is fixedly connected to a knocking hammer. A knocking bell is arranged between the knocking hammer and the outer wall of the housing. The knocking bell is fixedly connected to the housing. A first spring is connected between the sliding rod and the housing; A recording mechanism, the recording mechanism is arranged in the housing. The recording mechanism includes a writing pad fixedly connected to the inner wall of the housing. Rotating rollers are arranged on both sides of the writing pad. A recording paper is arranged on one side of the writing pad close to the drawing pen. 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 in transmission connection with the rotating roller. A first transmission wheel is rotatably installed on the lifting plate. The first transmission wheel is vertically movably clamped with the connecting shaft. The first transmission wheel is in transmission connection with the rotating shaft; Wherein, the higher the water level rises, the rotating wheel with more inclined blocks is at the same height as the sliding rod, so that the number of times the knocking hammer strikes the knocking bell during one rotation of the rotating wheel is more. After the water level rises, the drawing pen moves vertically on the recording paper, and the first transmission wheel is also clamped with the connecting shaft. While the rotating shaft drives the rotating wheel to rotate, it also drives the rotating roller to rotate, so that the recording paper moves relatively to the drawing pen in the horizontal direction.

[0007] As a preferred solution of the water level monitoring and alarming device for a hydropower station of the present invention, wherein: one end of the inclined block close to the rotating wheel is fixedly connected with a sliding block. A plurality of first sliding grooves are formed on the outer side of the rotating wheel along the circumferential direction. The first sliding groove is slidably connected with the sliding block in the vertical direction. The first sliding grooves of adjacent two rotating wheels are aligned in the vertical direction.

[0008] As a preferred solution of the water level monitoring and alarming device for a hydropower station according to the present invention, wherein: the sliding rod includes a first rod body slidably connected to the housing, and a second rod body is threadedly connected to one end of the first rod body close to the inclined block along the axial direction, and the end of the second rod body abuts against the inclined block.

[0009] As a preferred solution of the water level monitoring and alarming device for a hydropower station according to the present invention, wherein: a plurality of second chutes are circumferentially formed inside the first transmission wheel, and a first slide bar is fixedly connected to the outer side of the connecting shaft along the circumferential direction, and the first slide bar is slidably engaged with the second chutes in the vertical direction.

[0010] As a preferred solution of the water level monitoring and alarming device for a hydropower station according to the present invention, wherein: a first gear is fixedly connected to the connecting shaft, and second gears are meshed on both sides of the first gear, and the two second gears are respectively fixedly connected to two rotating rollers, a second transmission wheel is fixedly connected to the rotating shaft, a transmission belt is connected between the second transmission wheel and the first transmission wheel, and a motor is fixedly connected to the lifting plate, and an output end of the motor is fixedly connected to the rotating shaft.

[0011] As a preferred solution of the water level monitoring and alarming device for a hydropower station according to the present invention, wherein: the lifting rod includes a third rod body slidably connected to the lifting plate in the vertical direction, a fourth rod body is slidably connected to the lower end of the third rod body, the fourth rod body is fixedly connected to the floating block, a first limiting hole is formed in the third rod body, a second limiting hole is formed in the fourth rod body in the vertical direction, and a limiting pin is slidably connected inside the first limiting hole and the second limiting hole.

[0012] As a preferred solution of the water level monitoring and alarming device for a hydropower station according to the present invention, wherein: an elastic part is fixedly connected to the outer wall of the floating block, and an inflation port is formed in the floating block.

[0013] As a preferred solution of the water level monitoring and alarming device for a hydropower station according to the present invention, wherein: 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] As a preferred solution of the water level monitoring and alarming device for a hydropower station according to the present invention, wherein: a rotating cylinder is arranged between the first transmission wheel and the lifting plate, the upper end of the rotating cylinder is fixedly connected to the first transmission wheel, the lower end of the rotating cylinder is fixedly connected to a flange, the flange is rotatably engaged with the lifting plate, a retaining ring is arranged above the flange, and the retaining ring is fixedly connected to the lifting plate.

[0015] As a preferred solution of the water level monitoring and alarming device of the present invention, the following is provided: A sliding cylinder is slidably connected to the outside of the sliding rod. The sliding cylinder is fixedly connected to the outer wall of the housing. A third sliding groove is provided on the sliding cylinder. A sliding column is fixedly connected to the outside of the sliding rod. The sliding column and the third sliding groove are slidably matched along the axial direction.

[0016] The technical effects achieved by the present invention are as follows: The present invention adopts the designs of a floating mechanism and an alarming mechanism. The floating mechanism can drive different rotating wheels to align with the sliding rod as the water level rises, so that the number of times the knocking hammer strikes the knocking bell changes with different water levels. The floating block moves upward as the water level rises, making the rotating wheel and the sliding rod at the same height. After the rotating shaft drives the rotating wheel to rotate, the inclined block pushes the sliding rod to slide along the housing, causing the knocking hammer to move away from the knocking bell and then strike the knocking bell under the elastic action of the first spring, thereby emitting an alarm sound. When the water level rises to different heights, different rotating wheels are at the same height as the sliding rod. Thus, during one rotation of the rotating shaft, different numbers of inclined blocks push the sliding rod to slide, and further, the number of alarm sounds per unit time is different, so as to emit different alarms. Compared with the method that can only emit one kind of alarm after the water level rises, it is convenient to emit different alarms according to different heights of the water level, improving the convenience of water level monitoring and alarming. The present invention adopts the design of a recording mechanism. The recording mechanism can cause the drawing pen to draw lines on the recording paper as the water level rises, so as to record the height change of the water level after the water level rises. The drawing pen moves upward as the water level rises and draws lines on the recording paper in the vertical direction. The lifting plate moves upward as the water level rises, making the first transmission wheel engage with the connecting shaft. While the rotating shaft drives the rotating wheel to rotate, it also drives the first transmission wheel and the connecting shaft to rotate. The connecting shaft drives the rotating roller to rotate, causing the recording paper to be wound from one rotating roller to another rotating roller, so that the drawing pen draws lines on the recording paper in the horizontal direction. Furthermore, the drawing pen records the height change of the water level on the recording paper according to the water level change, which is convenient for the monitoring personnel to check the water level change during the rise after the alarm. Description of the Drawings

[0017] Figure 1 is the overall structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the housing and the knocking bell of the present invention; Figure 3 is the sectional schematic diagram of the housing at one angle of the present invention; Figure 4 is the sectional schematic diagram of the housing at another angle of the present invention; Figure 5 is the sectional schematic diagram of the alarming mechanism and the housing of the present invention; Figure 6 is the structural schematic diagram of the drawing pen and the recording paper of the present invention; Figure 7 It is a schematic structural diagram of the second gear and the first gear in the present invention; Figure 8 It is a schematic cross-sectional view of the drawing pen and the recording paper in the present invention; Figure 9 It is a schematic cross-sectional view of the inclined block and the sliding rod in the present invention; Figure 10 It is a schematic structural diagram of the floating mechanism in the present invention; Figure 11 In the present invention Figure 10 An enlarged schematic view of part A; Figure 12 It is a schematic cross-sectional view of the first transmission wheel and the rotating cylinder in the present invention; Figure 13 It is a schematic structural diagram of the sliding rod and the sliding cylinder in the present invention.

[0018] In the attached drawings, the list of components represented by each reference numeral is as follows: 10. Housing; 11. Sliding cylinder; 111. Third sliding groove; 20. Floating mechanism; 21. Lifting plate; 22. Lifting rod; 221. Pushing plate; 222. Third rod body; 223. Fourth rod body; 224. First limiting hole; 225. Second limiting hole; 226. Limiting pin; 23. Floating block; 231. Elastic part; 232. Inflation port; 24. Drawing pen; 30. Alarm mechanism; 31. Rotating shaft; 311. Second transmission wheel; 32. Rotating wheel; 321. First sliding groove; 33. Inclined block; 331. Slider; 34. Sliding rod; 341. First rod body; 342. Second rod body; 343. Sliding column; 35. Hammer; 36. 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 strip; 442. First gear; 45. First transmission wheel; 451. Second sliding groove; 46. Pressing roller; 51. Transmission belt; 52. Motor; 53. Rotating cylinder; 531. Flange; 54. Retaining ring. Detailed implementation manners

[0019] In order to make the purpose and advantages of the present invention clearer, the present invention will be specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific implementation manners of the present invention, and does not strictly limit the scope of protection specifically claimed by the present invention. Embodiment

[0020] As Figures 1 to 13As shown in the figure, this is the first embodiment of the present invention. This embodiment provides a water level monitoring and alarm device for a hydropower station, including a housing 10; a floating mechanism 20, the floating mechanism 20 is slidably arranged in the housing 10, the floating mechanism 20 includes a lifting plate 21 slidably connected to the inside of the housing 10 in the vertical direction, a lifting rod 22 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 floating block 23 is fixedly installed at the lower end of the lifting rod 22, and a drawing pen 24 is fixedly installed at the upper end of the lifting rod 22; an alarm mechanism 30, the alarm mechanism 30 is arranged in the housing 10, the alarm mechanism 30 includes a rotating shaft 31 rotatably installed on the lifting plate 21, a plurality of rotating wheels 32 are fixedly connected to the rotating shaft 31 in the vertical direction, a plurality of inclined blocks 33 are fixedly installed on the outer side of the rotating wheels 32 along the circumferential direction, the number of inclined blocks 33 on the plurality of rotating wheels 32 increases sequentially from top to bottom, a sliding rod 34 is slidably connected to the housing 10, one end of the sliding rod 34 close to the rotating wheel 32 is in abutting cooperation with the inclined block 33, the other end of the sliding rod 34 far from the rotating wheel 32 extends outside the housing 10 and is fixedly connected to a knocking hammer 35, a knocking bell 36 is arranged between the knocking hammer 35 and the outer wall of the housing 10, the knocking bell 36 is fixedly connected to the housing 10, and a first spring 37 is connected between the sliding rod 34 and the housing 10; a recording mechanism 40, the recording mechanism 40 is arranged in the housing 10, the recording mechanism 40 includes a writing pad 41 fixedly connected to the inner wall of the housing 10, rotating rollers 42 are arranged on both sides of the writing pad 41, a recording paper 43 is arranged on one side of the writing pad 41 close to the drawing pen 24, both ends of the recording paper 43 are wound and connected to the two rotating rollers 42 respectively, a connecting shaft 44 is rotatably connected to the inner wall of the housing 10, the connecting shaft 44 is in transmission connection with the rotating roller 42, a first transmission wheel 45 is rotatably installed on the lifting plate 21, the first transmission wheel 45 is movably clamped with the connecting shaft 44 in the vertical direction, and the first transmission wheel 45 is in transmission connection with the rotating shaft 31.

[0021] It should be noted that columns are fixedly connected to the outer side of the housing 10, the bottoms of the columns are fixedly connected to the ground by the water, a distribution box is fixedly installed on the columns, and both the columns and the distribution box are prior arts, which will not be elaborated here. The striking bell 36 is made of metal material, and it is a prior mature technology that the striking hammer 35 strikes the striking bell 36 to make a sound. The striking hammer 35 strikes the striking bell 36 to cause the metal to vibrate to make a sound, which is used to emit an alarm sound, and this will not be elaborated here. A plurality of water passing holes are formed in the inner wall of the housing 10 close to the floating block 23, and the water passing holes are used for water flow to pass through, so that the water level heights inside and outside the housing 10 are the same, which is convenient for driving the floating block 23 to float upward when the water level rises. A screen is arranged below the floating block 23, and the screen is fixedly connected to the housing 10. The screen is used to prevent foreign matters in the water from entering the interior of the housing 10 and reduce the situation where foreign matters affect the floating block 23. A slide rail is arranged between the lifting plate 21 and the inner wall of the housing 10, and the lifting plate 21 is slidably connected to the housing 10 through the slide rail. Limiting plates are arranged below both ends of the lifting plate 21, and the limiting 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. A slope is arranged on one side of the sliding rod 34 close to the rotation direction, and the slope is in abutting fit with the end of the sliding rod 34 and is used to push the sliding rod 34 to slide. In the initial state, the water level has not risen to the height that requires an alarm. At this time, the bottoms of both ends of the lifting plate 21 are in contact with the limiting plates, and a plurality of rotating wheels 32 are all located below the inclined block 33. The first transmission wheel 45 is not engaged with the connecting shaft 44, and the rotating shaft 31 keeps rotating. The floating block 23 is located in the water.

[0022] When the present invention is in use, in the initial state, the first transmission wheel 45 is not clamped with the connecting shaft 44. After the rotating shaft 31 rotates, it does not drive the connecting shaft 44 to rotate through 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 floating block 23 moves upward along the housing 10 under the action of buoyancy. The floating block 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. When 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 a plurality of rotating wheels 32 to move upward and makes the plurality of rotating wheels 32 pass through the sliding rod 34 in sequence from top to bottom. When one of the rotating wheels 32 is at the same height as the sliding rod 34, after the rotating shaft 31 rotates, it drives the rotating wheel 32 and the sliding rod 34 to rotate, so that the inclined block 33 pushes the sliding rod 34 to slide outward. At this time, the hammer 35 moves away from the bell 36, and the first spring 37 is compressed. When the inclined block 33 is disengaged from the sliding rod 34, the first spring 37 pushes the sliding rod 34 to move toward the side close to the rotating wheel 32 under the elastic action, so that the sliding rod 34 drives the hammer 35 to strike the bell 36, thereby emitting an alarm sound. Since the number of inclined blocks 33 on the plurality of rotating wheels 32 increases in sequence from top to bottom, when the water level rises higher, the rotating wheel 32 with more inclined blocks 33 is at the same height as the sliding rod 34. The more times the sliding rod 34 is pushed per unit time, the more times the alarm sound is emitted. Therefore, when the water level rises to different heights, the number of alarm sound times is different, and the higher the water level, the more times the sound is emitted per unit time, so as to emit different alarms. Compared with the way that only one kind of alarm can be emitted after the water level rises, it is convenient to emit different alarms according to different heights of the water level, improving the convenience of water level monitoring and alarm. Moreover, after the rotating shaft 31 rotates, it also drives the first transmission wheel 45 to rotate. When the lifting rod 22 drives the lifting plate 21 to move upward through the push plate 221, the lifting plate 21 drives the first transmission wheel 45 to be clamped with the connecting shaft 44, so that the first transmission wheel 45 drives the connecting shaft 44 to rotate after rotating. The connecting shaft 44 drives two rotating rollers 42 to rotate, so that the recording paper 43 is wound from one rotating roller 42 to the other rotating roller 42, thereby enabling the drawing pen 24 to draw a line on the recording paper 43 in the horizontal direction. Also, since the lifting rod 22 drives the drawing pen 24 to draw a line on the recording paper 43 in the vertical direction after the water level rises, the drawing pen 24 draws a line on the recording paper 43 to record the height change of the water level, so as to facilitate the inspection of the water level change during the rise by the monitoring personnel after the alarm.

[0023] Among them, when the recording mechanism 40 needs to record the change in the rising height of the water level, 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 floating block 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 certain 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 can obtain the distance between this point and the bottom of the water. The distance between this point and the bottom of the water minus the distance between the drawing pen 24 and the water surface can obtain the distance between the water surface and the bottom of the water at this moment, that is, the water level height at this moment. In this process, only the numerical value of the distance between a certain point on the line and the lower end of the recording paper 43 changes. Through the above simple calculation, the numerical value of the water level height can be obtained, which is convenient for the monitoring personnel to know the change in the rising height of the water level through the height change of the line on the recording paper 43, and details are not elaborated here. Embodiment

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

[0025] As Figure 5 shown, one end of the inclined block 33 close to the rotating wheel 32 is fixedly connected with a slider 331. A plurality of first sliding grooves 321 are circumferentially formed on the outer side of the rotating wheel 32. The first sliding grooves 321 are slidably connected with the slider 331 in the vertical direction, and the first sliding grooves 321 of adjacent two rotating wheels 32 are aligned in the vertical direction.

[0026] It should be noted that a retaining disc is arranged below the lowermost rotating wheel 32, and the diameter size of the retaining disc is larger than the diameter size of the rotating wheel 32. This retaining disc is used to prevent the slider 331 from falling off and disengaging from the first sliding groove 321.

[0027] According to the above structure, the slider 331 is matched with the first sliding groove 321, which is convenient for disassembling and assembling the inclined block 33. In the same rotating wheel 32, by inserting a plurality of sliders 331 into a plurality of first sliding grooves 321 with different spacing distances respectively, the distance between the inclined blocks 33 distributed along the circumference of the rotating wheel 32 is adjusted, so as to adjust the time interval between two adjacent inclined blocks 33 pushing the sliding rod 34, and thus adjust the time interval for the knocking hammer 35 to strike the knocking bell 36, so as to facilitate adjusting the time interval of the alarm sound.

[0028] As Figure 13 shown, the sliding rod 34 includes a first rod body 341 slidably connected to the housing 10. One end of the first rod body 341 close to the inclined block 33 is threadedly connected with a second rod body 342 along the axial direction, and the end of the second rod body 342 is in abutting cooperation with the inclined block 33.

[0029] According to the above structure, since the second rod body 342 is threadedly connected to the first rod body 341, the second rod body 342 rotates along the first rod body 341 and also moves along the first rod body 341 to adjust the distance between the second rod body 342 and the first rod body 341, thereby adjusting the overall length dimension of the slide rod 34. When adjusting the distance between the slide rod 34 and the inclined surface of the inclined block 33 when the inclined block 33 pushes the slide rod 34, when this distance increases, the sliding distance of the inclined block 33 pushing the slide rod 34 decreases, so that the degree of extrusion of the first spring 37 decreases. The first spring 37 reduces the force of the hammer 35 hitting the bell 36, making the alarm sound decrease. When this distance decreases, the sliding distance of the inclined block 33 pushing the slide rod 34 increases, so that the degree of extrusion of the first spring 37 increases. The first spring 37 increases the force of the hammer 35 hitting the bell 36, making the alarm sound increase, thus facilitating the adjustment of the size of the alarm sound.

[0030] As Figure 12 shown, a plurality of second sliding grooves 451 are circumferentially formed inside the first transmission wheel 45. A first sliding strip 441 is fixedly connected to the outer side of the connecting shaft 44 along the circumference. The first sliding strip 441 and the second sliding grooves 451 are slidably matched in the vertical direction.

[0031] According to the above structure, when the water level does not rise, the first sliding strip 441 is not inserted into the second sliding groove 451, so that when the rotating shaft 31 drives the first transmission wheel 45 to rotate, the connecting shaft 44 is not driven to rotate together. When the water level rises and the first transmission wheel 45 moves upward along the connecting shaft 44, the first sliding strip 441 is inserted into the second sliding groove 451, so that when the rotating shaft 31 drives the first transmission wheel 45 to rotate, the connecting shaft 44 is also driven to rotate together, thereby driving the recording paper 43 to move, facilitating that when the water level does not rise, it is not recorded by the recording mechanism 40, and only when the water level rises is it recorded by the recording mechanism 40, reducing the waste of the recording paper 43.

[0032] As Figure 6 、 Figure 7 、 Figure 8 and Figure 10 shown, a first gear 442 is fixedly connected to the connecting shaft 44. A second gear 421 is meshed on both sides of the first gear 442. The two second gears 421 are respectively fixedly connected to the two rotating rollers 42. 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.

[0033] According to the above structure, after the motor 52 works, the output end drives the rotating shaft 31 to rotate. While the rotating shaft 31 drives the rotating wheel 32 to rotate, it 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, so as to facilitate the recording paper 43 to be wound from one rotating roller 42 to another rotating roller 42.

[0034] As Figure 11 shown, the lifting rod 22 includes a third rod body 222 slidably connected to the lifting plate 21 in the vertical direction. A fourth rod body 223 is slidably connected to the lower end of the third rod body 222. The fourth rod body 223 is fixedly connected to the floating block 23. A first limiting hole 224 is formed in the third rod body 222. A second limiting hole 225 is formed in the fourth rod body 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. The fourth rod body 223 is moved along the vertical direction on the third rod body 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 inserted into the first limiting hole 224 and the second limiting hole 225 to limit the fourth rod body 223 and the third rod body 222, thereby adjusting the overall length of the lifting rod 22, adjusting the distance between the marking pen 24 and the floating block 23, and further adjusting the distance between the marking pen 24 and the water surface. When installing this alarm device, it is convenient to adapt to water levels at different heights in the initial state, improving applicability.

[0036] As Figure 11 shown, an elastic part 231 is fixedly connected to the outer wall of the floating block 23. An air inlet 232 is formed in the floating block 23.

[0037] It should be noted that the inside of the floating block 23 is designed to be hollow, and the elastic part 231 is made of an elastic material.

[0038] According to the above structure, the inside of the floating block 23 is inflated or deflated through the air inlet 232, so that the elastic part 231 expands outward or contracts inward, to adjust the volume of the liquid displaced by the floating block 23, thereby adjusting the buoyancy of the floating block 23 floating in the water, and adjusting the distance between the marking pen 24 and the water surface when the floating block 23 floats in the water. When installing this alarm device, it is convenient to adapt to water levels at different heights in the initial state, improving applicability.

[0039] As 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 rollers 46 are in contact with the recording paper 43, facilitating pressing the recording paper 43 onto the writing pad 41, making the recording paper 43 flatter on the writing pad 41 and facilitating the drawing pen 24 to draw lines along the recording paper 43.

[0041] As Figure 12 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 with a flange 531. The flange 531 is rotationally matched 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. Through holes are provided inside both the rotating cylinder 53 and the lifting plate 21, and the diameter of the through hole is larger than the overall diameter of the first slide bar 441 and the connecting shaft 44, facilitating the first slide bar 441 and the connecting shaft 44 to 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 rotationally connected through the flange 531 and the retaining ring 54, and the first transmission wheel 45 and the lifting plate 21 are rotationally installed together through the rotating cylinder 53.

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

[0045] It should be noted that the sliding rod 34 and the housing 10 are slidably installed together through the sliding cylinder 11.

[0046] According to the above structure, the sliding column 343 and the third sliding groove 111 cooperate to make the process of the sliding rod 34 sliding along the sliding cylinder 11 more stable.

[0047] The working principle of the present invention is as follows: After the water level rises, the floating block 23 drives the lifting plate 21 and the marking pen 24 to move upward. After the lifting plate 21 moves upward, it drives the rotating shaft 31 and the first transmission wheel 45 to move upward. After the rotating shaft 31 moves upward, the rotating wheel 32 moves to a position at the same height as the sliding rod 34. After the rotating shaft 31 rotates, it drives 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 hammer 35 strikes the bell 36, thereby emitting an alarm sound. Since the number of inclined blocks 33 of different rotating wheels 32 is different, when the water level rises to different heights, the number of alarm sound times is different. Compared with the way that only one kind of alarm can be emitted after the water level rises, it is convenient to emit different alarms according to different heights of the water level, improving the convenience of water level monitoring and alarm. Moreover, after the first transmission wheel 45 moves upward, it is clamped 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, making the recording paper 43 be wound from one rotating roller 42 to another rotating roller 42, thereby enabling the marking pen 24 to draw a line on the recording paper 43 in the horizontal direction. Also, since the marking pen 24 also draws a line on the recording paper 43 in the vertical direction after moving upward, the marking pen 24 draws a line on the recording paper 43 to record the height change of the water level, which is convenient for the monitoring personnel to check the water level change during the rise after the alarm.

[0048] The above is only the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention are implemented according to the conventional means in the art without special instructions and limitations.

Claims

1. A water level monitoring and alarm device for a hydropower station, characterized in that: include: A housing (10), wherein a lifting plate (21) is slidably connected to the interior of the housing (10), a floating portion is movably connected to the bottom of the lifting plate (21), and a top of the floating portion movably passes through the lifting plate (21) and is connected to a marker pen (24); A recording mechanism (40), the recording mechanism (40) comprising a recording paper (43) and two rotating rollers (42) arranged opposite to each other, the two ends of the recording paper (43) being respectively wound around the two rotating rollers (42); An alarm mechanism (30), the alarm mechanism (30) comprising a sound-generating mechanism and a rotating shaft (31), the rotating shaft (31) being fixedly connected to a plurality of rotating wheels (32) in a vertical direction, a plurality of inclined blocks (33) being fixedly mounted on the outer side of the rotating wheel (32) in a circumferential direction, the number of the inclined blocks (33) on the plurality of rotating wheels (32) increasing from top to bottom, and the sound-generating mechanism being adapted to the inclined blocks (33); When the floating part changes with the water level, the drawing pen (24) moves along with the floating part in the vertical direction. When the water level rises to the warning water level, the two rotating rollers (42) are connected to the rotating shaft (31) through transmission, so that the alarm mechanism (30) and the recording mechanism (40) operate. As the water level gradually rises, the more the number of rotating wheels (32) of the inclined blocks (33) corresponds to the sounding mechanism, so that the rotating wheels (32) are triggered more times with the sounding mechanism during one rotation of the rotating wheels (32).

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

3. The water level monitoring and alarm device for a hydropower station according to claim 1 is characterized in that: The sound-generating mechanism comprises a slide bar (34) slidably connected to the housing (10), one end of the slide bar (34) close to the rotating wheel (32) is in abutment with the inclined block (33), one end of the slide bar (34) away from the rotating wheel (32) extends out of the housing (10) and is fixedly connected to a knocking hammer (35), a knocking bell (36) is provided between the knocking hammer (35) and the outer wall of the housing (10), the knocking bell (36) is fixedly connected to the housing (10), a first spring (37) is connected between the slide bar (34) and the housing (10), the slide bar (34) comprises a first rod body (341) slidably connected to the housing (10), one end of the first rod body (341) close to the inclined block (33) is axially threadedly connected to a second rod body (342), and an end of the second rod body (342) is in abutment with the inclined block (33).

4. The water level monitoring and alarm device for a hydropower station according to claim 1, characterized in that: The recording mechanism (40) further comprises a writing pad (41) fixedly connected to the inner wall of the shell (10), the writing pad (41) being located between the two rotating rollers (42), the rotating roller (42) being rotatably connected to the inner wall of the shell (10), a connecting shaft (44) being rotatably connected to the inner wall of the shell (10), the connecting shaft (44) being transmission-connected to the rotating roller (42), a first transmission wheel (45) being rotatably mounted on the lifting plate (21), the first transmission wheel (45) being movably engaged with the connecting shaft (44) in a vertical direction, and the first transmission wheel (45) being transmission-connected to the rotating shaft (31).

5. The water level monitoring and alarm device for a hydropower station according to claim 1 is characterized in that: A slider (331) is fixedly connected to one end of the inclined block (33) close to the rotating wheel (32); a plurality of first sliding grooves (321) are circumferentially provided on the outer side of the rotating wheel (32); the first sliding grooves (321) are slidably connected to the slider (331) in a vertical direction; and the first sliding grooves (321) of two adjacent rotating wheels (32) are aligned in the vertical direction.

6. The water level monitoring and alarm device for a hydropower station according to claim 4, characterized in that: A plurality of second slide grooves (451) are provided inside the first transmission wheel (45) along the circumferential direction; a first slide bar (441) is fixedly connected to the outer side of the connecting shaft (44) along the circumferential direction; the first slide bar (441) and the second slide groove (451) are slidably matched in the vertical direction; a first gear (442) is fixedly connected to the connecting shaft (44); second gears (421) are meshed on both sides of the first gear (442); two second gears (421) are respectively fixedly connected to two rotating rollers (42); 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); an output end of the motor (52) is fixedly connected to the rotating shaft (31).

7. The water level monitoring and alarm device for a hydropower station according to claim 4, characterized in that: A first gear (442) is fixedly connected to the connecting shaft (44), second gears (421) are meshed on both sides of the first gear (442), and the two second gears (421) are respectively fixedly connected to the two rotating rollers (42). A second transmission wheel (311) is fixedly connected to the rotating shaft (31), and 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 an output end of the motor (52) is fixedly connected to the rotating shaft (31).

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

9. The water level monitoring and alarm device for a hydropower station according to claim 4, 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); the lower end of the rotating cylinder (53) is fixedly connected to a flange (531); the flange (531) is rotatably matched 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).

10. The water level monitoring and alarm device for a hydropower station according to claim 3, characterized in that: The sliding rod (34) is slidably connected to a sliding cylinder (11) on the outside, the sliding cylinder (11) is fixedly connected to the outer wall of the housing (10), a third sliding groove (111) is provided on the sliding cylinder (11), and a sliding column (343) is fixedly connected to the outside of the sliding rod (34), the sliding column (343) and the third sliding groove (111) are axially slidably matched.

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