Device and method for detecting opening degree of water conservancy gate based on phase sensor

Abstract

The invention discloses a water conservancy gate opening degree detection device based on a phase sensor, and relates to the technical field of water conservancy gate opening degree detection, the water conservancy gate opening degree detection device comprises a rack, a spur gear, a triangular strip, a sliding block and a movable block, the rack is fixedly installed at the top of a valve, the spur gear is slidably installed on the circumferential surface of a cylinder, and the triangular strip is arranged on the spur gear; the triangular strip is slidably installed at the top of the water gate, the sliding block is slidably installed on the inner wall of the enclosure frame, the movable block is divided into a fixed part and a movable part, the fixed part is rotationally connected with the bottom of the movable part, and the fixed part of the movable block is fixedly installed on the face, close to the enclosure frame, of the sliding block; detection recording and mutual verification are carried out on valve opening and closing from different transmission paths, data errors caused by faults of a single detection component are effectively reduced, the accuracy and reliability of a water conservancy gate opening degree detection result are greatly improved, and a powerful guarantee is provided for precise regulation and control of a water conservancy project.

Description

Technical Field

[0001] The present invention relates to the technical field of water conservancy gate opening detection, and in particular to a water conservancy gate opening detection device based on a phase sensor. Background Art

[0002] The hydraulic gate opening detection device based on phase sensor is a device used to accurately measure the opening degree of hydraulic gates. It is mainly composed of a phase sensor, a signal processing circuit, a display and output module, etc.

[0003] The patent with patent announcement number CN205620712U involves, including a gate opening measurement unit, a gate control unit, an input keyboard, a display unit, a processor, and a gate status detection unit; the gate opening measurement unit measures the gate opening and sends it to the processor; the processor controls the operation of the gate through the gate control unit, receives control information from the staff through the input keyboard, and displays the gate opening information through the display unit; the processor detects whether the gate is in a normal hanging state or a stuck state through the gate status detection unit, and sends the status information to the display unit. This patent can detect the tension of the gate cable in real time, determine whether the gate is in a normal state or a stuck state, stop the gate operation, and avoid excessive force, causing cable breakage or other serious accidents.

[0004] In the above patent, the tension of the gate cable is detected in real time to determine whether the gate is in a normal state or a stuck state, and the gate operation is stopped to avoid excessive force, which may cause cable breakage or other serious accidents. However, there are still problems. Without comparative data, it is difficult to ensure that each detection value is accurate, which increases the data error caused by the failure of a single detection component and cannot effectively guarantee the accuracy and reliability of the water conservancy gate opening detection results. Summary of the Invention

[0005] In view of the deficiencies in the prior art, the present invention provides a device for detecting the opening of a hydraulic gate based on a phase sensor, which solves the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a detection device for the opening of a hydraulic gate based on a phase sensor, characterized in that: a dual-wheel device for performing more accurate dual detection of the detection device includes a dual device, and the dual device also includes:

[0007] Water gate, which is used to block and release water. The water gate is divided into a dam body and a valve inside the dam body;

[0008] A lifting machine, which is arranged on the top of the water gate and is used to open and close the valve;

[0009] A phase sensing detector is slidably mounted on the top of the water gate and is used to detect the opening and closing of the valve;

[0010] A cylinder, the cylinder is fixedly mounted on the output end of the phase sensor detector, and a protective gear is slidably mounted on the circumferential surface of the cylinder, the protective gear is used to perform secondary detection and recording of the opening and closing of the valve;

[0011] A limiting block, which is slidably mounted on the circumferential surface of the cylinder and is used to limit the protective gear;

[0012] The frame is fixedly installed on the top of the water gate. The frame is used to protect the phase sensor detector. When the spur gear moves, it drives the cylinder to move. When the cylinder moves, the phase sensor detector rotates to perform counting detection. When the rack moves, it drives the triangle bar to move.

[0013] According to the above technical solution, the dual device also includes a rack, a spur gear, a triangular bar, a sliding block and a movable block. The rack is fixedly mounted on the top of the valve, the spur gear is slidably mounted on the circumferential surface of the cylinder, the triangular bar is slidably mounted on the top of the sluice gate, the sliding block is slidably mounted on the inner wall of the frame, and the movable block is divided into a fixed part and a movable part. The fixed part is rotatably connected to the bottom of the movable part, and the fixed part of the movable block is fixedly mounted on a side of the sliding block close to the frame. When the triangular bar moves, it will drive the inclined block at the top of the triangular bar to move, and when the inclined block moves, it will drive the sliding block to move upward, and when the sliding block moves, it will drive the movable block to move.

[0014] According to the above technical solution, the movable part of the movable block is engaged with the protective gear, a spring is provided between the movable part and the fixed part of the movable block, the rack is engaged with the spur gear, and the end of the triangular bar close to the sliding block is fixed with the inclined block;

[0015] Among them, the top of the water gate is provided with an emergency device for preventing the valve from falling suddenly due to aging and a protective device for limiting the phase sensor detector. When the protective gear and the spur gear are replaced, pushing the protective gear or spur gear onto the cylinder will directly press the limit block downward. When the protective gear or spur gear moves to the middle of the limit block, the protective gear or spur gear will be limited.

[0016] According to the above technical solution, the emergency device includes an elastic telescopic block, a protrusion, a U-shaped rod and a limit block. The elastic telescopic block is slidably installed on the circumferential surface of the elastic telescopic block, the U-shaped rod is slidably installed on the top of the water gate, the protrusion is fixedly installed on the top of one end of the U-shaped rod close to the cylinder, and the limit block is fixedly installed on the side of the U-shaped rod close to the phase sensor detector. When the elastic telescopic block is extended, it will contact the protrusion. When the elastic telescopic block contacts the protrusion, it will push the protrusion. When the protrusion moves, it will drive the U-shaped rod to move. When the U-shaped rod moves, it will drive the limit block to move.

[0017] According to the above technical solution, the emergency device also includes an irregular rod, a limit bar and an elastic telescopic pressure plate. The irregular rod is fixedly installed on one end of the U-shaped rod close to the lifting machine, the fixed end of the elastic telescopic pressure plate is fixedly installed on the top of the water gate, and the limit bar is slidably installed on the free end of the elastic telescopic pressure plate. The limit bar is slidably connected to the top of the water gate. When the U-shaped rod moves, it will drive the irregular rod to move. When the irregular rod moves, the limit bar will be released from the limit. When the limit bar is released, the elastic force of the No. 1 spring will cause the limit bar to separate from the elastic telescopic pressure plate.

[0018] According to the above technical solution, a No. 1 spring is provided between the limit bar and the elastic telescopic pressure plate, a No. 2 spring is provided between the phase sensing detector and the water gate, the elastic telescopic block is in contact with the protrusion, and the limit block is in contact with the phase sensing detector. When the limit of the elastic telescopic pressure plate is released, the free end of the elastic telescopic pressure plate will move toward the valve of the water gate to limit the valve, thereby reducing the valve movement speed.

[0019] According to the above technical solution, the protective device includes a cover plate, an elastic telescopic rod, an L-block, an elastic telescopic slash, a push plate and a convex plate. The cover plate is rotatably mounted on the top of the frame, and a No. 1 slide groove is provided on the front of the frame. The fixed end of the elastic telescopic rod is fixedly mounted on the right side inside the No. 1 slide groove. The L-block is fixedly mounted on the front of the free end of the elastic telescopic rod. The elastic telescopic slash is slidably mounted on the bottom of the cover plate. The push plate is fixedly mounted on the bottom of the elastic telescopic slash. The convex plate is slidably mounted on the bottom of the cover plate. When the L-block is released, it will return to its original position again under the action of the elastic telescopic rod. To close the cover plate, it only needs to press the cover plate in the direction of the L-block to limit the cover plate.

[0020] According to the above technical solution, the push plate is in contact with the convex plate, a No. 2 spring is provided between the elastic telescopic bar and the cover plate, a No. 3 spring is provided between the convex plate and the cover plate, and a limiting door is provided on the frame. When the convex plate moves, the cover plate will be limited to prevent the staff from opening the cover plate when the machine is working. At the same time, when an internal fault occurs, the limiting door on the frame will be opened to release the limit.

[0021] A detection method for a hydraulic gate opening detection device based on a phase sensor, comprising the following steps:

[0022] Step 1: When the valve inside the water gate moves upward, it drives the rack to move, and when the rack moves, it drives the spur gear to move, and when the spur gear moves, it drives the cylinder to move, and when the cylinder moves, the phase sensor detector performs counting detection;

[0023] Step 2: When the sliding block moves, it drives the movable block to move, when the movable block moves, it drives the protective gear to move, when the movable block moves, it drives the cylinder to move, and when the cylinder moves, it also causes the phase sensor detector to perform counting detection;

[0024] Step 3: When there is a problem with the protective gear or spur gear, press the limit block downward to quickly release the limit of the protective gear and the spur gear. At the same time, pull out the elastic telescopic block to pull the spur gear outward for replacement. When the protective gear or spur gear is put in, the limit block will limit the protective gear and the spur gear.

[0025] The present invention provides a device for detecting the opening of a hydraulic gate based on a phase sensor. The device has the following beneficial effects:

[0026] (1) This invention pushes the protective gear or spur gear into the cylinder, and the limit block automatically resets the limit, which shortens the equipment maintenance time and reduces the maintenance cost. The movable block and the protective gear drive the cylinder again to make the phase sensor detector count and detect, and detect and record the valve opening and closing from different transmission paths, and verify each other, effectively reducing the data error caused by the failure of a single detection component, greatly improving the accuracy and reliability of the water conservancy gate opening detection results, and providing a strong guarantee for the precise control of water conservancy projects.

[0027] (2) In this invention, the elastic retractable pressure plate limits the water gate valve to achieve speed regulation. When the phase sensor detector moves, it will drive the spur gear to move. When the spur gear moves, it will lose contact with the rack, which can cut off abnormal power transmission in time, avoid increased gear wear and bearing overheating due to high-speed operation and other component damage, effectively extend the service life of the equipment, and reduce the downtime risk and maintenance costs caused by sudden failures.

[0028] (3) This invention can release the limit by opening the limiting door on the enclosure, allowing quick access to internal components, simplifying the equipment maintenance process and reducing the difficulty of maintenance operations. When the convex plate moves, it will limit the cover plate, preventing workers from opening the cover plate while the machine is working, preventing workers from being injured by accidentally touching the operating parts, and preventing foreign objects from entering the equipment, reducing the probability of mechanical failure, and ensuring the safety of personnel and the stability of equipment during the operation of the water conservancy gate opening detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 Schematic diagram of the phase sensing detector and rack structure of the present invention;

[0031] Figure 3 This is a schematic diagram of the rack and cylinder structure of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the limiting block and the protective gear of the present invention;

[0033] Figure 5 This is a schematic diagram of the irregular rod and limit bar structure of the present invention;

[0034] Figure 6 This is a schematic diagram of the elastic telescopic rod and L block structure of the present invention;

[0035] Figure 7 This is a schematic diagram of the elastic telescopic slash and convex plate structure of the present invention.

[0036] In the figure: 1. Water gate; 2. Lifting machine; 3. Phase sensing detector; 401. Rack; 402. Cylinder; 403. Limiting block; 404. Protective gear; 405. Spur gear; 406. Triangular bar; 407. Sliding block; 408. Movable block; 501. Elastic telescopic block; 502. Protrusion; 503. U-shaped rod; 504. Limiting block; 505. Irregular rod; 506. Limiting bar; 507. Elastic telescopic pressure plate; 601. Frame; 602. Cover plate; 603. Elastic telescopic rod; 604. L-block; 605. Elastic telescopic slash; 606. Push plate; 607. Protruding plate. DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 7 One embodiment of the present invention is a phase sensor-based hydraulic gate opening detection device, a dual-wheel device for performing more accurate dual detection of the detection device, comprising a dual device, the dual device further comprising:

[0039] Water gate 1 is used to block and release water. Water gate 1 is divided into the dam body and the valve inside the dam body;

[0040] Lifting machine 2, which is arranged on the top of the water gate 1 and is used to open and close the valve;

[0041] Phase sensor detector 3, the phase sensor detector 3 is slidably mounted on the top of the water gate 1, and the phase sensor detector 3 is used to detect the opening and closing of the valve;

[0042] Cylinder 402, Cylinder 402 is fixedly mounted on the output end of the phase sensor detector 3, and a protective gear 404 is slidably mounted on the circumferential surface of the cylinder 402, and the protective gear 404 is used to perform secondary detection and recording of the opening and closing of the valve;

[0043] The limiting block 403 is slidably mounted on the circumferential surface of the cylinder 402 and is used to limit the protective gear 404;

[0044] Frame 601 is fixedly installed on the top of the sluice gate 1. Frame 601 is used to protect the phase sensing detector 3, detect and record the valve opening and closing from different transmission paths, verify each other, effectively reduce the data error caused by the failure of a single detection component, greatly improve the accuracy and reliability of the water gate opening detection results, and provide a strong guarantee for the precise regulation of water conservancy projects.

[0045] The dual device also includes a rack 401, a spur gear 405, a triangular bar 406, a sliding block 407 and a movable block 408. The rack 401 is fixedly mounted on the top of the valve, the spur gear 405 is slidably mounted on the circumferential surface of the cylinder 402, the triangular bar 406 is slidably mounted on the top of the water gate 1, the sliding block 407 is slidably mounted on the inner wall of the frame 601, and the movable block 408 is divided into a fixed part and a movable part. The fixed part is rotatably connected to the bottom of the movable part. The fixed part of the movable block 408 is fixedly mounted on a side of the sliding block 407 close to the frame 601. When the triangular bar 406 moves, it will drive the inclined block at the top of the triangular bar 406 to move. When the inclined block moves, it will drive the sliding block 407 to move upward. When the sliding block 407 moves, it will drive the movable block 408 to move.

[0046] The movable part of the movable block 408 is engaged with the protective gear 404, and a clockwork spring is arranged between the movable part and the fixed part of the movable block 408. The rack 401 is engaged with the spur gear 405, and the bevel block is fixedly installed on one end of the triangular bar 406 close to the sliding block 407. When the protective gear 404 and the spur gear 405 are replaced, pushing the protective gear 404 or the spur gear 405 onto the cylinder 402 will directly press the limit block 403 downward, and when the protective gear 404 or the spur gear 405 moves to the middle of the limit block 403, the protective gear 404 or the spur gear 405 will be limited.

[0047] A detection method for a hydraulic gate opening detection device based on a phase sensor, comprising the following steps:

[0048] Step 1: When the valve inside the water gate 1 moves upward, it drives the rack 401 to move, and when the rack 401 moves, it drives the spur gear 405 to move, and when the spur gear 405 moves, it drives the cylinder 402 to move, and when the cylinder 402 moves, the phase sensor detector 3 performs counting detection;

[0049] Step 2: When the sliding block 407 moves, it drives the movable block 408 to move. When the movable block 408 moves, it drives the protective gear 404 to move. When the movable block 408 moves, it drives the cylinder 402 to move. When the cylinder 402 moves, the phase sensor detector 3 also performs counting detection;

[0050] Step 3: When there is a problem with the protective gear 404 or the spur gear 405, pressing the limit block 403 downward can quickly release the limit of the protective gear 404 and the spur gear 405. At the same time, pulling out the elastic telescopic block 501 can pull the spur gear 405 outward for replacement. When the protective gear 404 or the spur gear 405 is put in, the limit block 403 will limit the protective gear 404 and the spur gear 405.

[0051] When this embodiment is working: when the lifting machine 2 is started, the valve of the water gate 1 will be pulled upward, and when the valve moves upward, it will drive the rack 401 to move upward, and when the rack 401 moves, it will drive the spur gear 405 to move, and when the spur gear 405 moves, it will drive the cylinder 402 to move, and when the cylinder 402 moves, the phase sensor detector 3 will rotate to perform counting detection, and when the rack 401 moves, it will drive the triangle bar 406 to move, and when the triangle bar 406 moves, it will drive the inclined block at the top of the triangle bar 406 to move, and when the inclined block moves, it will drive the sliding block 407 to move upward, and when the sliding block 407 moves, it will drive the movable block 408 to move, and when the movable block 408 moves, It drives the protective gear 404 to move. When the protective gear 404 moves, it drives the cylinder 402 to move. When the cylinder 402 moves, the phase sensor detector 3 will also rotate for counting and detection. When there is a problem with the protective gear 404 or the spur gear 405, the limit block 403 will be pressed downward. When the limit block 403 is pressed downward, the protective gear 404 and the spur gear 405 can be pulled out. When the protective gear 404 and the spur gear 405 are replaced, the protective gear 404 or the spur gear 405 will be pushed onto the cylinder 402, which will directly press the limit block 403 downward. When the protective gear 404 or the spur gear 405 moves to the middle of the limit block 403, the protective gear 404 or the spur gear 405 will be limited.

[0052] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, an emergency device for preventing the valve from suddenly falling due to aging and a protective device for limiting the phase sensor detector 3 are provided on the top of the water gate 1. The emergency device includes an elastic telescopic block 501, a protrusion 502, a U-shaped rod 503 and a limit block 504. The elastic telescopic block 501 is slidably mounted on the circumferential surface of the elastic telescopic block 501, the U-shaped rod 503 is slidably mounted on the top of the water gate 1, the protrusion 502 is fixedly mounted on the top of the end of the U-shaped rod 503 close to the cylinder 402, and the limit block 504 is fixedly mounted on the side of the U-shaped rod 503 close to the phase sensor detector 3. Abnormal power transmission can be cut off in time, avoiding damage to components such as increased gear wear and bearing overheating due to high-speed operation, effectively extending the service life of the equipment, and reducing the risk of downtime and maintenance costs caused by sudden failures.

[0053] The emergency device also includes an irregular rod 505, a limit bar 506 and an elastic telescopic pressure plate 507. The irregular rod 505 is fixedly installed on the end of the U-shaped rod 503 close to the lifting machine 2, and the fixed end of the elastic telescopic pressure plate 507 is fixedly installed on the top of the water gate 1. The limit bar 506 is slidably installed on the free end of the elastic telescopic pressure plate 507. The limit bar 506 is slidably connected to the top of the water gate 1. When the U-shaped rod 503 moves, it will drive the irregular rod 505 to move. When the irregular rod 505 moves, the limit bar 506 will be released from the limit. When the limit bar 506 is released, the elastic force of the No. 1 spring will cause the limit bar 506 to separate from the elastic telescopic pressure plate 507.

[0054] A No. 1 spring is provided between the limit bar 506 and the elastic telescopic pressure plate 507, a No. 2 spring is provided between the phase sensing detector 3 and the water gate 1, the elastic telescopic block 501 is in contact with the protrusion 502, and the limit block 504 is in contact with the phase sensing detector 3. When the limit of the elastic telescopic pressure plate 507 is released, the free end of the elastic telescopic pressure plate 507 will move toward the valve of the water gate 1 to limit the valve and reduce the valve movement speed.

[0055] The protective device includes a cover plate 602, an elastic telescopic rod 603, an L-block 604, an elastic telescopic slash 605, a push plate 606 and a convex plate 607. The cover plate 602 is rotatably mounted on the top of the frame 601. A No. 1 slide groove is provided on the front of the frame 601. The fixed end of the elastic telescopic rod 603 is fixedly mounted on the right side inside the No. 1 slide groove. The L-block 604 is fixedly mounted on the front of the free end of the elastic telescopic rod 603. The elastic telescopic slash 605 is slidably mounted on the bottom of the cover plate 602. The push plate 606 is fixedly mounted on the bottom of the elastic telescopic slash 605. The convex plate 607 is slidably mounted on the bottom of the cover plate 602 to prevent staff from being injured due to accidentally touching the moving parts, and at the same time prevent foreign matter from entering the equipment, reducing the probability of mechanical failure, and ensuring the safety of personnel and stability of equipment during the operation of the water conservancy gate opening detection device.

[0056] The push plate 606 is in contact with the protruding plate 607, a No. 2 spring is provided between the elastic telescopic bar 605 and the cover plate 602, a No. 3 spring is provided between the protruding plate 607 and the cover plate 602, and a limiting door is provided on the frame 601. When the protruding plate 607 moves, the cover plate 602 will be limited to prevent the staff from opening the cover plate 602 when the machine is working. At the same time, when an internal fault occurs, the limiting door on the frame 601 will be opened to release the limit.

[0057] When this embodiment is working: when the rack 401 moves too fast, it will drive the spur gear 405 to rotate quickly. When the spur gear 405 rotates quickly, it will drive the cylinder 402 to rotate. When the cylinder 402 rotates quickly, it will drive the elastic telescopic block 501 to rotate quickly. When the elastic telescopic block 501 rotates quickly, it will extend outward. After the elastic telescopic block 501 extends, it will contact the protrusion 502. When the elastic telescopic block 501 contacts the protrusion 502, it will push the protrusion 502. When the protrusion 502 moves, it will drive the U-shaped rod 503 to move. When the U-shaped rod 503 moves, it will drive the limit block 504 to move. When the limit block 504 moves, the limit on the phase sensor detector 3 will be released. When the limit of the phase sensing detector 3 is released, the phase sensing detector 3 will move. When the phase sensing detector 3 moves, it will drive the spur gear 405 to move. When the spur gear 405 moves, it will disengage from the rack 401. When the two disengage from each other, the spur gear 405 will stop rotating. When the U-shaped rod 503 moves, it will drive the irregular rod 505 to move. When the irregular rod 505 moves, the limit bar 506 will be released from the limit. When the limit of the limit bar 506 is released, the elastic force of the No. 1 spring will cause the limit bar 506 to disengage from the elastic telescopic pressure plate 507. When the limit of the elastic telescopic pressure plate 507 is released, the free end of the elastic telescopic pressure plate 507 will move toward the valve of the water gate 1 to limit the valve and reduce the valve movement speed.

[0058] When the staff needs to inspect the interior, they pull the L block 604 on the frame 601 toward the elastic telescopic rod 603. When the L block 604 is released, it will return to its original position under the action of the elastic telescopic rod 603. To close the cover 602, they only need to press the cover 602 in the direction of the L block 604 to limit the cover 602. When the rack 401 moves, it will drive the elastic telescopic slash 605 to move. When the elastic telescopic slash 605 moves, it will drive the push plate 606 to move. When the push plate 606 moves, it will drive the convex plate 607 to move. When the convex plate 607 moves, it will limit the cover 602, preventing the staff from opening the cover 602 when the machine is working. At the same time, when an internal fault occurs, the restriction door on the frame 601 is opened to release the limit.

[0059] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the opening of a hydraulic gate based on a phase sensor, characterized in that: A dual-wheel device for performing more accurate dual detection of a detection device, comprising a dual device, wherein the dual device further comprises: A water gate (1), the water gate (1) is used to block and release water, and the water gate (1) is divided into a dam body and a valve inside the dam body; A lifting machine (2), the lifting machine (2) is arranged on the top of the water gate (1), and the lifting machine (2) is used to open and close the valve; A phase sensing detector (3), the phase sensing detector (3) being slidably mounted on the top of the water gate (1), and the phase sensing detector (3) being used to detect the opening and closing of the valve; A cylinder (402), the cylinder (402) is fixedly mounted on the output end of the phase sensing detector (3), a protective gear (404) is slidably mounted on the circumferential surface of the cylinder (402), and the protective gear (404) is used to perform secondary detection and recording of the opening and closing of the valve; A limiting block (403), wherein the limiting block (403) is slidably mounted on the circumferential surface of the cylinder (402), and the limiting block (403) is used to limit the protective gear (404); A frame (601) is fixedly mounted on the top of the water gate (1), and the frame (601) is used to protect the phase sensing detector (3).

2. The device for detecting the opening of a hydraulic gate based on a phase sensor according to claim 1, characterized in that: The dual device further comprises a rack (401), a spur gear (405), a triangular bar (406), a sliding block (407) and a movable block (408), wherein the rack (401) is fixedly mounted on the top of the valve, the spur gear (405) is slidably mounted on the circumferential surface of the cylinder (402), the triangular bar (406) is slidably mounted on the top of the water gate (1), the sliding block (407) is slidably mounted on the inner wall of the surrounding frame (601), and the movable block (408) is divided into a fixed part and a movable part, wherein the fixed part is rotatably connected to the bottom of the movable part, and the fixed part of the movable block (408) is fixedly mounted on a side of the sliding block (407) close to the surrounding frame (601).

3. The device for detecting the opening of a hydraulic gate based on a phase sensor according to claim 2, characterized in that: The movable part of the movable block (408) is meshed with the protective gear (404), a spring is provided between the movable part and the fixed part of the movable block (408), the rack (401) is meshed with the spur gear (405), and the end of the triangular bar (406) close to the sliding block (407) is fixedly mounted with an inclined block; The top of the water gate (1) is provided with an emergency device for preventing the valve from suddenly falling due to aging and a protective device for limiting protection of the phase sensing detector (3).

4. The device for detecting the opening of a hydraulic gate based on a phase sensor according to claim 3, characterized in that: The emergency device comprises an elastic telescopic block (501), a convex block (502), a U-shaped rod (503) and a limit block (504); the elastic telescopic block (501) is slidably mounted on the circumferential surface of the elastic telescopic block (501); the U-shaped rod (503) is slidably mounted on the top of the water gate (1); the convex block (502) is fixedly mounted on the top of one end of the U-shaped rod (503) close to the cylinder (402); and the limit block (504) is fixedly mounted on one side of the U-shaped rod (503) close to the phase sensor detector (3).

5. The device for detecting the opening of a hydraulic gate based on a phase sensor according to claim 4, characterized in that: The emergency device further comprises an irregular rod (505), a limiting strip (506) and an elastic telescopic pressure plate (507), wherein the irregular rod (505) is fixedly mounted on one end of the U-shaped rod (503) close to the lifting machine (2), the fixed end of the elastic telescopic pressure plate (507) is fixedly mounted on the top of the water gate (1), the limiting strip (506) is slidably mounted on the free end of the elastic telescopic pressure plate (507), and the limiting strip (506) is slidably connected to the top of the water gate (1).

6. The device for detecting the opening of a hydraulic gate based on a phase sensor according to claim 5, characterized in that: A No. 1 spring is provided between the limit bar (506) and the elastic telescopic pressure plate (507), a No. 2 spring is provided between the phase sensing detector (3) and the water gate (1), the elastic telescopic block (501) contacts the protrusion (502), and the limit block (504) contacts the phase sensing detector (3).

7. The device for detecting the opening of a hydraulic gate based on a phase sensor according to claim 6, characterized in that: The protective device comprises a cover plate (602), an elastic telescopic rod (603), an L block (604), an elastic telescopic slash (605), a push plate (606) and a convex plate (607); the cover plate (602) is rotatably mounted on the top of the enclosure frame (601); a No. 1 slide groove is provided on the front of the enclosure frame (601); the fixed end of the elastic telescopic rod (603) is fixedly mounted on the right side inside the No. 1 slide groove; the L block (604) is fixedly mounted on the front of the free end of the elastic telescopic rod (603); the elastic telescopic slash (605) is slidably mounted on the bottom of the cover plate (602); the push plate (606) is fixedly mounted on the bottom of the elastic telescopic slash (605); and the convex plate (607) is slidably mounted on the bottom of the cover plate (602).

8. The device for detecting the opening of a hydraulic gate based on a phase sensor according to claim 7, characterized in that: The push plate (606) contacts the convex plate (607), a No. 2 spring is provided between the elastic telescopic slash bar (605) and the cover plate (602), a No. 3 spring is provided between the convex plate (607) and the cover plate (602), and a limiting door is provided on the surrounding frame (601).

9. A detection method for a water conservancy gate opening detection device based on a phase sensor, using the water conservancy gate opening detection device based on a phase sensor according to claim 8, characterized in that: The following steps are involved: Step 1: When the valve inside the water gate (1) moves upward, it drives the rack (401) to move, and when the rack (401) moves, it drives the spur gear (405) to move, and when the spur gear (405) moves, it drives the cylinder (402) to move, and when the cylinder (402) moves, the phase sensor (3) performs counting detection; Step 2: When the sliding block (407) moves, it drives the movable block (408) to move, and when the movable block (408) moves, it drives the protective gear (404) to move, and when the movable block (408) moves, it drives the cylinder (402) to move, and when the cylinder (402) moves, it also causes the phase sensor detector (3) to perform counting detection; Step 3: When a problem occurs with the protective gear (404) or the spur gear (405), pressing the limit block (403) downwards can quickly release the limit of the protective gear (404) and the spur gear (405), and at the same time, pulling out the elastic telescopic block (501) can pull out the spur gear (405) for replacement. When the protective gear (404) or the spur gear (405) is put in, the limit block (403) will limit the protective gear (404) and the spur gear (405).

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