Water level detection device for hydroelectric power station

Abstract

The utility model belongs to the technical field of water level detection, and particularly relates to a water level detection device for a hydroelectric power station, comprising: a fixing frame, the bottom of which is provided with a base and the top of which is provided with a telescopic adjusting structure, the fixing frame comprising a plurality of pipe bodies detachably connected with each other; the measuring mechanism is arranged at the end, away from the fixing frame, of the telescopic adjusting structure and used for detecting the water level; the moving mechanism is arranged on the base, and a user can move the base through the moving mechanism; wherein the fixing mechanism is arranged on the base and comprises an electric cylinder and a positioning rod arranged at the bottom of the electric cylinder. The water level monitoring device has the beneficial effects that the base can be easily moved and repositioned through the arranged moving mechanism, a user does not need to manually carry or adjust the position of equipment with great effort, the working efficiency and safety are greatly improved, and the function is particularly important under the condition that the water levels of different areas need to be frequently monitored.

Description

Technical Field

[0001] The present application belongs to the field of water level detection technology, and in particular relates to a water level detection device for a hydropower station. Background Art

[0002] In the process of maintaining the normal operation of water conservancy and hydropower projects, water level parameters are an important monitoring indicator, which can reflect the water storage capacity and flood peak regulation ability of water conservancy and hydropower projects. Water level detection devices are widely used in water plants, refineries, chemical plants, glass factories, sewage treatment plants, high-rise water supply systems, reservoirs, rivers, etc. to measure and control the static and dynamic liquid levels of water supply tanks, water distribution tanks, water treatment tanks, water wells, water tanks, water tanks, oil wells, oil tanks, oil pools, and various liquids.

[0003] Patent publication number CN110440869B discloses a water level detection device for water conservancy project management, including a fixed frame, a first mounting pipe fixedly installed on the top of one side of the fixed frame, a fixing component provided at one end of the first mounting pipe, and a second mounting pipe clamped on the fixing component, relating to the technical field of water conservancy project auxiliary equipment.

[0004] The above patent adjusts the length of the entire installation pipe by setting the number of second installation pipes to adapt to the requirements of different water surface positions and shore distances. However, in actual use, there is no corresponding moving structure, which makes it more laborious to adjust the position and move, and needs to be improved. Utility Model Content

[0005] The purpose of this application is to provide a water level detection device for a hydropower station that can solve the above problems.

[0006] The purpose of this application is to provide a water level detection device for a hydropower station, comprising:

[0007] A fixing frame, the bottom of which is provided with a base, and the top of which is provided with a telescopic adjustment structure, including a plurality of tubes detachably connected to each other;

[0008] A measuring mechanism is provided at the end of the telescopic adjustment structure away from the fixed frame and is used to detect the water level;

[0009] A moving mechanism is provided on the base, and a user can move the base through the moving mechanism;

[0010] It also includes a fixing mechanism arranged on the base, including an electric cylinder and a positioning rod arranged at the bottom of the electric cylinder.

[0011] By using the above-mentioned water level detection device for a hydropower station, through a telescopic adjustment structure composed of a plurality of mutually detachably connected pipe bodies, the user can flexibly adjust the length of the entire installation pipe according to the actual water surface position and the distance from the shore, which not only meets the use requirements in different scenarios, but also improves the adaptability and flexibility of the equipment. At the same time, the mobile mechanism set up in this application allows the base to be easily moved and repositioned, and the user does not need to laboriously manually carry or adjust the position of the equipment, which greatly improves work efficiency and safety. This function is particularly important in cases where frequent monitoring of water levels in different areas is required. In addition, the design of the electric cylinder and positioning rod in the fixing mechanism ensures that the equipment can be firmly fixed in the specified position when needed, reduces manual intervention, and improves the accuracy and efficiency of positioning. The design of the positioning rod also enhances the stability and safety of the equipment in complex environments.

[0012] Furthermore, the moving mechanism includes:

[0013] A storage slot is provided in the base;

[0014] The deformation component is arranged in the receiving groove, and includes a connecting block, a mounting block, and a connecting piece connecting the mounting block and the connecting block, and a roller is arranged at the bottom of the mounting block;

[0015] A driver is disposed in the base and connected to the connecting block;

[0016] When the driver drives the deformable component to move, the deformable component deforms and pushes the roller out of the receiving slot. When the driver drives the deformable component to move in the opposite direction, the deformable component deforms and drives the roller to be received in the receiving slot.

[0017] The inclusion of a storage slot within the base saves space while ensuring the neatness and safety of the mobile mechanism when not in use. The slot design allows the rollers to be completely concealed when not in use, protecting them from damage from external factors and preventing unnecessary movement of the device due to the rollers rolling. The deformable assembly, consisting of a connecting block, a mounting block, and the connectors connecting them, can flexibly deform under the control of a driver, allowing the rollers to be smoothly ejected from or retracted into the storage slot while ensuring stability and reliability during movement. The rollers are connected to the driver via the deformable assembly, enabling intelligent control. Users can extend and retract the rollers simply by controlling the driver, eliminating the need for manual operation and improving efficiency and safety. Furthermore, the compact design of the entire mobile mechanism and the coordinated operation of its components maximize functionality and ensure the reliability and safety of the device over the long term.

[0018] Further: the storage tank includes:

[0019] A first movable groove adapted to the connecting block and allowing the connecting block to slide;

[0020] A second movable groove is provided below the first movable groove and is in communication with the first movable groove, wherein the mounting block is located in the second movable groove and is capable of sliding along the second movable groove;

[0021] A receiving groove, provided at the second movable bottom and in communication with the second movable groove, for receiving the roller;

[0022] a movable slot, disposed on one side of the second movable slot and extending to one side of the receiving slot;

[0023] Among them, when the connecting block moves, the installation block moves from the second movable groove to above the movable groove, driving the roller to move from the receiving groove to below the movable groove. When the connecting block continues to move until it cannot move, the installation block moves from above the movable groove to below the movable groove, driving the roller to be ejected from below the movable groove.

[0024] The first movable groove fits within the connecting block and allows it to slide, ensuring smooth movement along a predetermined trajectory under the action of the actuator, providing reliable support for subsequent deformation and movement of the roller. The second movable groove is located below and connected to the first movable groove. The mounting block is located within and can slide along it, allowing the mounting block to move vertically, driven by the connecting block, thereby controlling the position of the roller. The connectivity of the second movable groove with the first movable groove ensures continuity and stability during the deformation assembly's movement. A receiving groove is located at the bottom of the second movable groove and is connected to it. It is specifically designed to accommodate the roller. When the roller is not in use, it can be completely concealed within this groove, preventing external interference and damage, improving the safety of the device and maintaining a neat appearance. A movable groove is located on one side of the second movable groove and extends to the side of the receiving groove. This provides a passage for the roller to extend from the receiving groove and prepare to contact the ground. When the connecting block moves to a certain position, the mounting block moves along the movable groove, pushing the roller out of the receiving groove.

[0025] When the driver moves the connecting block, the mounting block moves with it, changing position along a pre-set trajectory. During this process, the deformation of the deformable component not only ensures the smooth extension and retraction of the rollers, but also ensures the stability and reliability of the device during movement. The entire movement mechanism is automatically controlled by the driver, allowing users to extend and retract the rollers with simple operations, significantly reducing operational difficulty and labor intensity while improving work efficiency and safety.

[0026] Furthermore, the connecting piece includes:

[0027] A first reinforcement rod, both ends of which are hinged to the connecting block and the mounting block respectively;

[0028] The second reinforcement rod is parallel to the first reinforcement rod, and its two ends are hinged to the connecting block and the mounting block respectively;

[0029] Wherein, both the connecting block and the mounting block are provided with internal grooves for installing the first reinforcement rod and the second reinforcement rod.

[0030] The first and second reinforcement rods are parallel to each other and hinged to the connecting block and mounting block, respectively. This design forms a stable quadrilateral structure, which can also be considered a variation of a parallelogram. This structure is mechanically stable and can withstand large forces and moments, ensuring that the deformable component is not easily deformed or damaged during movement. While the reinforcement rod design enhances stability, the use of a hinged connection provides sufficient flexibility for the connector. This allows the connecting block and mounting block to move relative to each other under the action of the driver, thereby achieving the extension and retraction of the roller.

[0031] Furthermore, both the connecting block and the mounting block are equipped with internal slots for the first and second reinforcement rods. This not only provides a stable mounting location for the rods but also ensures their free movement within the slots without external interference. Furthermore, the rods' trajectory and deformation range are considered to ensure they do not collide or rub against the connecting block or mounting block during movement. Furthermore, space optimization is fully considered, resulting in a more compact and space-saving structure for the entire deformation assembly.

[0032] Furthermore, the driver includes:

[0033] A double-headed motor is arranged in the base, and a screw is arranged on its output shaft;

[0034] A guide chute is provided in the base and is located above the first movable groove;

[0035] A movable slider is arranged in the guide slot and connected to the screw;

[0036] The guide sliding groove is connected to the first movable groove, and the movable sliding block is connected to the connecting block.

[0037] Using a double-headed motor as the power source can drive the structures on both sides simultaneously, which not only improves work efficiency but also ensures the consistency and synchronization of the movement on both sides. During the process of extending or retracting the roller, the bidirectional rotation of the double-headed motor can ensure the smooth and coordinated movement of the connecting block and the mounting block. The combination of the screw and the movable slider ensures that power can be effectively transmitted to the deformation component. The setting of the guide chute not only provides a stable motion trajectory for the movable slider, but also ensures its accuracy and reliability during the movement process. The guide chute is connected to the first movable groove, allowing the movable slider to smoothly guide the connecting block to move within the first movable groove, thereby driving the roller to extend or retract.

[0038] The beneficial effects of this application are:

[0039] 1. Through the telescopic adjustment structure composed of multiple mutually detachable tubes, users can flexibly adjust the length of the entire installation tube according to the actual water surface position and the distance from the shore. This not only meets the requirements of use in different scenarios, but also improves the adaptability and flexibility of the equipment.

[0040] 2. The mobile mechanism provided in this application enables the base to be easily moved and repositioned, eliminating the need for users to laboriously carry or adjust the position of the device manually, greatly improving work efficiency and safety. This function is particularly important when frequent monitoring of water levels in different areas is required.

[0041] 3. In addition, the electric cylinder and positioning rod design in the fixing mechanism ensure that the equipment can be firmly fixed in the specified position when needed, reducing manual intervention and improving the accuracy and efficiency of positioning. The design of the positioning rod also enhances the stability and safety of the equipment in complex environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a structural diagram of the utility model;

[0043] Figure 2 It is a structural diagram of the mobile mechanism of the utility model;

[0044] Figure 3 It is a schematic diagram of the internal structure of the mobile mechanism of the utility model.

[0045] The reference numerals in the figure are: 100, fixed frame; 110, base; 120, telescopic adjustment structure; 121, tube body; 200, measuring mechanism; 300, fixing mechanism; 310, electric cylinder; 320, positioning rod; 400, moving mechanism; 410, storage groove; 411, first moving groove; 412, second moving groove; 413, receiving groove; 414, movable groove; 420, connecting block; 430, mounting block; 440, connecting piece; 441, first reinforcement rod; 442, second reinforcement rod; 443, internal groove; 450, roller; 460, drive; 461, double-headed motor; 462, guide slide; 463, moving slider. DETAILED DESCRIPTION

[0046] The following will be combined with the accompanying drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0047] The terms "first," "second," and the like in the specification and claims of this application are used to distinguish similar objects, and are not used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate, so that the embodiments of this application can be implemented in an order other than that illustrated or described herein, and that the objects distinguished by "first," "second," and the like are generally of the same type, and do not limit the number of objects; for example, the first object can be one or more. In addition, the term "and / or" in the specification and claims refers to at least one of the connected objects, and the character " / " generally indicates that the objects connected are in an "or" relationship.

[0048] The water level detection device for a hydropower station provided by the embodiment of the present application is described in detail below with reference to the accompanying drawings through specific embodiments and their application scenarios.

[0049] Example 1:

[0050] like Figure 1 As shown, the embodiment of the present application provides a water level detection device for a hydropower station, comprising:

[0051] The fixing frame 100 has a base 110 at the bottom and a telescopic adjustment structure 120 at the top, which includes a plurality of tubes 121 that are detachably connected to each other;

[0052] The measuring mechanism 200 is provided at the end of the telescopic adjustment structure 120 away from the fixing frame 100 and is used to detect the water level;

[0053] The moving mechanism 400 is provided on the base 110 , and the user can move the base 110 via the moving mechanism 400 ;

[0054] The fixing mechanism 300 is further provided on the base 110 , and includes an electric cylinder 310 and a positioning rod 320 provided at the bottom of the electric cylinder 310 .

[0055] In some implementations of the embodiments of this application, Figure 1As shown, the above-mentioned water level detection device for a hydropower station is used. Through a telescopic adjustment structure 120 composed of a plurality of mutually detachably connected tube bodies 121, the user can flexibly adjust the length of the entire installation pipe according to the actual water surface position and the distance from the shore. This not only meets the use requirements in different scenarios, but also improves the adaptability and flexibility of the equipment. At the same time, the mobile mechanism 400 set in this application allows the base 110 to be easily moved and repositioned. The user does not need to laboriously manually carry or adjust the position of the equipment, which greatly improves work efficiency and safety. This function is particularly important in situations where frequent monitoring of water levels in different areas is required. In addition, the design of the electric cylinder 310 and the positioning rod 320 in the fixing mechanism 300 ensures that the equipment can be firmly fixed in the specified position when needed, reduces manual intervention, and improves the accuracy and efficiency of positioning. The design of the positioning rod 320 also enhances the stability and safety of the equipment in complex environments.

[0056] Example 2:

[0057] An embodiment of the present application provides a water level detection device for a hydropower station. In addition to the above-mentioned technical features, the water level detection device for a hydropower station in the embodiment of the present application also includes the following technical features.

[0058] like Figure 2 and Figure 3 As shown, the moving mechanism 400 includes:

[0059] The storage tank 410 is provided in the base 110;

[0060] The deformation assembly is disposed in the receiving groove 410 and includes a connecting block 420, a mounting block 430, and a connecting member 440 connecting the mounting block 430 and the connecting block 420. A roller 450 is disposed at the bottom of the mounting block 430.

[0061] A driver 460 is disposed in the base 110 and connected to the connecting block 420;

[0062] When the driver 460 drives the deformation component to move, the deformation component deforms and pushes the roller 450 out of the storage groove 410. When the driver 460 drives the deformation component to move in the opposite direction, the deformation component deforms and drives the roller 450 to be stored in the storage groove 410.

[0063] In the embodiment of the present application, by providing a storage slot 410 within the base 110, space is saved and the mobile mechanism 400 is kept neat and safe when not in use. The design of the storage slot 410 allows the roller 450 to be completely hidden when not in use, preventing damage to the roller 450 from external factors and also preventing the device from moving when the roller 450 rolls unnecessarily. The deformation assembly consisting of the connecting block 420, the mounting block 430, and the connecting member 440 connecting them can achieve flexible deformation under the control of the driver 460, allowing the roller 450 to be smoothly ejected or retracted from the storage slot 410, while ensuring stability and reliability during movement. The roller 450 is connected to the driver 460 via the deformation assembly, realizing intelligent control. The user only needs to control the driver 460 to extend and retract the roller 450, without manual operation, thereby improving work efficiency and safety. At the same time, the entire mobile mechanism 400 is compactly designed, and the various components work together to maximize functionality and ensure the reliability and safety of the device during long-term use.

[0064] Example 3:

[0065] An embodiment of the present application provides a water level detection device for a hydropower station. In addition to the above-mentioned technical features, the water level detection device for a hydropower station in the embodiment of the present application also includes the following technical features.

[0066] like Figure 2 and Figure 3 As shown, the receiving tank 410 includes:

[0067] The first movable groove 411 is adapted to the connecting block 420 and allows the connecting block 420 to slide;

[0068] The second movable groove 412 is provided below the first movable groove 411 and communicates with the first movable groove 411 . The mounting block 430 is located in the second movable groove 412 and can slide along the second movable groove 412 .

[0069] A receiving groove 413 is provided at the second movable bottom and communicates with the second movable groove 412 for receiving the roller 450;

[0070] The movable slot 414 is provided on one side of the second movable slot 412 and extends to one side of the receiving slot 413;

[0071] Among them, when the connecting block 420 moves, the installation block 430 moves from the second movable groove 412 to above the movable groove 414, driving the roller 450 to move from the receiving groove 413 to below the movable groove 414. When the connecting block continues to move until it can no longer move, the installation block 430 moves from above the movable groove 414 to below the movable groove 414, driving the roller 450 to be ejected from below the movable groove.

[0072] In the embodiment of the present application, the first movable groove 411 is adapted to and allows the connecting block 420 to slide, ensuring that the connecting block 420 can move smoothly along a predetermined trajectory under the action of the driver 460, providing reliable support for subsequent deformation and the movement of the roller 450. The second movable groove 412 is arranged below and connected to the first movable groove 411. The mounting block 430 is located therein and can slide along it. This allows the mounting block 430 to move vertically under the drive of the connecting block 420, thereby controlling the position of the roller 450. At the same time, the connectivity between the second movable groove 412 and the first movable groove 411 ensures the continuity and stability of the deformation assembly during movement. The receiving groove 413 is located at the bottom of the second movable groove 412 and is connected thereto. It is specifically used to store the roller 450. When the roller 450 is not in use, it can be completely hidden in this groove, avoiding interference and damage from external factors, not only improving the safety of the device but also maintaining a neat appearance. The movable groove 414 is arranged on one side of the second movable groove 412 and extends to one side of the receiving groove 413, providing a channel for the roller 450 to extend from the receiving groove 413 and prepare to contact the ground. When the connecting block 420 moves to a certain position, the mounting block 430 will move along the movable groove 414, thereby pushing the roller 450 out of the receiving groove 413.

[0073] When driver 460 moves connecting block 420, mounting block 430 moves accordingly, changing position along a pre-set trajectory. During this process, the deformation of the deformable assembly not only ensures the smooth extension and retraction of roller 450, but also ensures the stability and reliability of the device during movement. Furthermore, the entire moving mechanism 400 is automatically controlled by driver 460, allowing the user to extend and retract roller 450 with simple operations, significantly reducing operational difficulty and labor intensity while improving work efficiency and safety.

[0074] Example 4:

[0075] An embodiment of the present application provides a water level detection device for a hydropower station. In addition to the above-mentioned technical features, the water level detection device for a hydropower station in the embodiment of the present application also includes the following technical features.

[0076] like Figure 2 and Figure 3 As shown, the connecting member 440 includes:

[0077] The first reinforcement rod 441 has two ends hinged to the connecting block 420 and the mounting block 430 respectively;

[0078] The second reinforcement rod 442 is parallel to the first reinforcement rod 441, and its two ends are hinged to the connecting block 420 and the mounting block 430 respectively;

[0079] Wherein, both the connecting block 420 and the mounting block 430 are provided with internal grooves 443 for mounting the first reinforcement rod 441 and the second reinforcement rod 442 .

[0080] In the embodiment of the present application, the first reinforcement rod 441 and the second reinforcement rod 442 are parallel to each other and are hinged to the connecting block 420 and the mounting block 430, respectively. This design forms a stable quadrilateral structure, which can also be regarded as a variation of a parallelogram. This structure has good mechanical stability and can withstand large forces and moments, thereby ensuring that the deformable component is not easily deformed or damaged during movement. Although the design of the reinforcement rod enhances stability, the use of the hinged method gives the connector 440 sufficient flexibility, which allows the connecting block 420 and the mounting block 430 to move relative to each other under the action of the driver 460, thereby realizing the extension and storage of the roller 450.

[0081] Furthermore, both the connecting block 420 and the mounting block 430 are provided with internal grooves 443 for mounting the first and second reinforcing rods 441 and 442. This not only provides a stable mounting location for the reinforcing rods, but also ensures that they can move freely within the internal grooves 443 without external interference. Furthermore, the movement trajectory and deformation range of the reinforcing rods are taken into consideration to ensure that they do not collide or rub against the connecting block 420 or the mounting block 430 during movement. Furthermore, full consideration is given to optimizing space utilization, making the entire deformation assembly more compact and space-saving.

[0082] Example 5:

[0083] An embodiment of the present application provides a water level detection device for a hydropower station. In addition to the above-mentioned technical features, the water level detection device for a hydropower station in the embodiment of the present application also includes the following technical features.

[0084] like Figure 2 and Figure 3 As shown, the driver 460 includes:

[0085] A double-headed motor 461 is disposed in the base 110 and has a screw on its output shaft;

[0086] The guide groove 462 is provided in the base 110 and is located above the first movable groove 411;

[0087] The movable slider 463 is disposed in the guide slot 462 and connected to the screw;

[0088] The guide groove 462 is connected to the first movable groove 411 , and the movable slider 463 is connected to the connecting block 420 .

[0089] In the embodiment of the present application, a double-headed motor 461 is used as a power source, which can simultaneously drive the structures on both sides, not only improving work efficiency, but also ensuring the consistency and synchronization of the movements on both sides. During the process of extending or retracting the roller 450, the bidirectional rotation of the double-headed motor 461 can ensure that the connecting block 420 and the mounting block 430 move smoothly and in a coordinated manner. The cooperation between the screw and the movable slider 463 can ensure that the power can be effectively transmitted to the deformation component. The setting of the guide slot 462 not only provides a stable motion trajectory for the movable slider 463, but also ensures its accuracy and reliability during the movement process. The guide slot 462 is connected to the first movable slot 411, so that the movable slider 463 can smoothly guide the connecting block 420 to move in the first movable slot 411, thereby driving the roller 450 to extend or retract.

[0090] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0091] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

Claims

1. A water level detection device for a hydropower station, characterized by: include: A fixing frame (100) is provided with a base (110) at its bottom and a telescopic adjustment structure (120) at its top, comprising a plurality of tubes (121) detachably connected to each other; A measuring mechanism (200) is provided at one end of the telescopic adjustment structure (120) away from the fixing frame (100) and is used to detect the water level; A moving mechanism (400) is provided on the base (110), and a user can move the base (110) via the moving mechanism (400); The invention also includes a fixing mechanism (300) arranged on the base (110), including an electric cylinder (310) and a positioning rod (320) arranged at the bottom of the electric cylinder (310).

2. The water level detection device for a hydropower station according to claim 1, characterized in that: The moving mechanism (400) comprises: A storage tank (410) is disposed in the base (110); The deformation component is arranged in the receiving groove (410), and includes a connecting block (420), a mounting block (430), and a connecting piece (440) connecting the mounting block (430) and the connecting block (420), and a roller (450) is arranged at the bottom of the mounting block (430); A driver (460) is disposed in the base (110) and connected to the connecting block (420); When the driver (460) drives the deformation component to move, the deformation component deforms and pushes the roller (450) out of the storage groove (410); when the driver (460) drives the deformation component to move in the opposite direction, the deformation component deforms and drives the roller (450) to be stored in the storage groove (410).

3. The water level detection device for a hydropower station according to claim 2, characterized in that: The receiving tank (410) comprises: A first movable groove (411) adapted to the connecting block (420) and allowing the connecting block (420) to slide; A second movable groove (412) is provided below the first movable groove (411) and is in communication with the first movable groove (411), wherein the mounting block (430) is located in the second movable groove (412) and is capable of sliding along the second movable groove (412); A receiving groove (413), provided at the second movable bottom and in communication with the second movable groove (412), for receiving the roller (450); A movable groove (414) is provided on one side of the second movable groove (412) and extends to one side of the receiving groove (413); When the connecting block (420) moves, the mounting block (430) moves from the second movable groove (412) to above the movable groove (414), driving the roller (450) to move from the receiving groove (413) to below the movable groove (414); when the connecting block continues to move until it cannot move, the mounting block (430) moves from above the movable groove (414) to below the movable groove (414), driving the roller (450) to be ejected from below the movable groove.

4. The water level detection device for a hydropower station according to claim 3, characterized in that: The connecting member (440) comprises: A first reinforcing rod (441), both ends of which are hinged to the connecting block (420) and the mounting block (430) respectively; The second reinforcing rod (442) is parallel to the first reinforcing rod (441), and its two ends are hinged to the connecting block (420) and the mounting block (430) respectively; Wherein, both the connecting block (420) and the mounting block (430) are provided with internal grooves (443) for mounting the first reinforcement rod (441) and the second reinforcement rod (442).

5. The water level detection device for a hydropower station according to claim 4, characterized in that: The driver (460) comprises: A double-headed motor (461) is disposed in the base (110), and a screw is disposed on the output shaft thereof; A guide slot (462) is provided in the base (110) and is located above the first movable slot (411); A movable slider (463) is disposed in the guide slot (462) and connected to the screw; The guide slot (462) is connected to the first movable slot (411), and the movable slider (463) is connected to the connecting block (420).

Images