Novel water gate and control method based on novel water gate

Abstract

The invention provides a novel water gate and a control method based on the novel water gate. The novel water gate is used for being arranged on the outer wall of the water outlet side of a water through hole of a main dam body and comprises two water baffle sliding rails, a water baffle and a water baffle lifting device. The two water baffle sliding rails are installed on the outer wall of the main dam body on the left side and the right side of the water through hole correspondingly, the water baffle sliding rails are vertically installed and are parallel, the two sides of the water baffle are each provided with a limiting device in embedded connection and sliding fit with the corresponding water baffle sliding rail, and a lifting component of the water baffle lifting device is connected to the water baffle. And a fixing part of the water baffle lifting device is fixed on the main dam body. The novel water gate is wide in application range and has the advantages of being low in manufacturing cost, capable of saving energy in the operation process and high in reliability.

Description

Technical Field

[0001] The present invention relates to water conservancy equipment, and particularly to a new type of sluice gate and a control method based on the new type of sluice gate. Background Art

[0002] In the prior art, in addition to the lifting gate, there are also ways such as rubber dams, hydraulic dams, and flap dams for regulating the river water level, each having its own advantages and disadvantages; among them, the lifting gate, hydraulic dam, and rubber dam can adjust their heights during use to thereby adjust the water level height and the water flow rate, while the flap dam can only achieve a set water level and will be forced to open by water pressure once the water level exceeds it, and can only close itself after the water level drops back to the predetermined value; in order to effectively resist water pressure, the lifting gate must be made very heavy, and the lifting process is very difficult, requiring a high-power motor or other mechanisms, but it can adjust the lifting height as needed to thereby infinitely adjust the size of the water flow passage; its disadvantages are high cost, high power and high energy consumption during the lifting process; the hydraulic dam uses a hydraulic mechanism to adjust the height of the dam body, and some hydraulic dams can also adjust the angle of the dam body plate to thereby adjust the water flow passage; its disadvantages are also high cost, and a hydraulic device is required to move the dam body during the adjustment process, with high power and high energy consumption during the adjustment process; the rubber dam is an overflow dam, and adjusts the height of the dam body by inflating to thereby adjust the overflow water level height and the water flow passage; its advantage is low cost, and its disadvantage is that it can only be adjusted by adjusting the height of the dam body, and the rubber dam body is easily damaged; the flap dam is a dam for regulating the water level, which automatically opens the dam body to discharge water when the water level rises to a predetermined height and automatically closes the dam body to store water when the water level drops to a predetermined height; the dam body only has two states of open and not open, and basically cannot adjust the size of the water flow passage, and once it is opened, the dam body can only close after the river water blocked by the dam body drops to a fixed position; the magnetic flap dam is an improved type of flap dam, which uses magnetism as the adjustment mechanism for the opening water level, but also only has two states of open and not open, and basically cannot adjust the size of the water flow passage, and once it is opened, the dam body can only close after the river water blocked by the dam body drops to a fixed position; therefore, a new type of sluice gate that can regulate the water level, has a simple structure, is easy to install, has low cost and maintenance cost, a wide range of applications, is convenient to operate, is energy-saving during operation, and has high reliability is the research direction of alternative products at present. Summary of the Invention

[0003] To solve the above various problems in the prior art, the present invention provides a new type of sluice gate and a control method based on the new type of sluice gate.

[0004] A new type of floodgate, which is used to be arranged on the outer wall of the water outlet side of the water passing hole of the main dam body, and includes: two floodgate slide rails, a floodgate, and a set of floodgate lifting devices; the two floodgate slide rails are respectively installed on the outer walls of the left and right sides of the main dam body of the water passing hole, the floodgate slide rails are all installed vertically, the two floodgate slide rails are parallel, a limiting device that is matched and slidably connected with the floodgate slide rail is respectively arranged on both sides of the floodgate, the lifting component of the floodgate lifting device is connected to the floodgate, and the fixing component of the floodgate lifting device is fixed on the main dam body.

[0005] Further, for the new type of floodgate, wherein: the slide rail is strip-shaped, and the cross-section is in the shape of an I-beam, that is, the upper flat plate and the lower flat plate are arranged in parallel, and the middle connecting plate is fixedly connected to both the upper flat plate and the lower flat plate; L-shaped flanges are respectively arranged on both the left and right sides of the floodgate, the two L-shaped flanges are arranged on the same surface of the floodgate, a U-shaped space opening to the right is formed between the L-shaped flange on the left side of the floodgate and the floodgate, and a U-shaped space opening to the left is formed between the L-shaped flange on the right side of the floodgate and the floodgate. Limiting strips are respectively arranged on the left and right side plates on the same surface of the floodgate. The dimension between the limiting strip and the vertical side of the L-shaped flange on the same side is for accommodating the width of the lower flat plate of the slide rail, and the dimension between the limiting strip and the horizontal side of the L-shaped flange on the same side is for accommodating the thickness of the lower flat plate of the slide rail; the left and right limiting strips are parallel to the axes of the left and right U-shaped spaces; the lower flat plate of the corresponding slide rail is sleeved in the U-shaped space on the corresponding side.

[0006] Further, for the new type of floodgate, it also includes two sets of slide rail hinges and two sets of slide rail electromagnets; a slide rail hinge is arranged at the top of each of the two floodgate slide rails, the fixing component of the slide rail hinge is installed on the outer wall of the main dam body, the rotating and moving component of the slide rail hinge is installed at the top of the floodgate slide rail. When the slide rail hinge is opened, the slide rail rotates around the slide rail hinge and lifts away from the main dam body. When the slide rail hinge is closed, the slide rail rotates around the slide rail hinge and drops close to the main dam body; a slide rail electromagnet is arranged at the position where the bottom of each of the two floodgate slide rails drops close to the main dam body corresponding to the main dam body; when the slide rail hinge is in the closed state, the floodgate slide rail presses the floodgate against the outer wall of the main dam body, and a set of slide rail electromagnets is arranged at the position corresponding to the bottom of the floodgate slide rail where it fits against the outer wall of the main dam body when the slide rail hinge is in the closed state.

[0007] Further, for the novel sluice, the water retaining plate lifting device includes a water receiving bucket, a water receiving bucket slide rail, a fixed pulley, and a steel cable. The water receiving bucket is used to receive the water leaking from the water passing hole of the main dam body. A drain hole is provided at the bottom or the middle and lower part of the side wall of the water receiving bucket, and an electric control drain valve is installed on the drain hole. One end of the steel cable is connected to the handle of the water receiving bucket, and the other end is connected to the upper end of the water retaining plate. The middle part of the steel cable is wound around the rotating device of the fixed pulley, and the fixed part of the fixed pulley is fixedly installed on the outer wall of the main dam body. When the electric control drain valve is closed, the water receiving bucket continuously receives water and its weight increases, causing the water receiving bucket to descend. The water receiving bucket pulls the steel cable, and the steel cable pulls the water retaining plate at the other end to relatively lift around the fixed pulley. When the electric control drain valve is opened, the water in the water receiving bucket is discharged and its weight decreases. The steel cable is pulled by the gravity of the water retaining plate, causing the water retaining plate to descend and the water receiving bucket to be pulled up. A slider is fixedly connected to the outer wall of the water receiving bucket. The slider is slidably fitted in the water receiving bucket slide rail, and the water receiving bucket slide rail is vertically installed on the outer wall of the main dam body. The descent or ascent of the water receiving bucket slides along the water receiving bucket slide rail. The slider has a T-shaped structure. The free end of the vertical rod in the T-shaped structure is fixed to the outer wall of the water receiving bucket, and the two ends of the horizontal rod in the T-shaped structure are respectively fixed to the axles of two rollers. The cross-section of the water receiving bucket slide rail is concave-shaped and semi-closed. At the openings on both sides of the concave shape of the water receiving bucket slide rail, inwardly curled long limiting plates are provided on each side. The two long limiting plates are arranged back to back. Each long limiting plate and the corresponding side of the water receiving bucket slide rail form a limiting accommodation groove for a long strip-shaped space. The two rollers of the slider are respectively installed and limited in the limiting accommodation grooves on the corresponding sides. The rollers roll in the accommodation grooves to cause the whole slider to move axially along the water receiving bucket slide rail. The gap between the two accommodation grooves is used to limit the vertical rod in the T-shaped structure of the slider. The steel cable is parallel to the water receiving bucket slide rail.

[0008] Further, for the novel sluice, the water receiving bucket and the water receiving bucket slide rail are arranged below the water retaining plate. One side of the water receiving bucket is a plane, and the cross-section of the water receiving bucket is D-shaped.

[0009] Further, for the novel sluice, it further includes an automatic electric control system. The automatic electric control system includes a data processor, a first intermediate relay, a water level sensor group upstream of the sluice, a first limit switch, a second limit switch, and a third limit switch. The signal output ends of the first limit switch, the second limit switch, and the third limit switch are respectively connected to the first limit switch signal input end, the second limit switch signal input end, and the third limit switch signal input end of the data processor. The water gate opening signal output terminal of the data processor is grounded after being connected in series with the coil of the first intermediate relay, and the normally closed contact of the first intermediate relay is connected between the power supply of the slide rail electromagnet and the slide rail electromagnet; when there is no signal output from the water gate opening signal output terminal of the data processor, when the slide rail electromagnet is powered on, the corresponding slide rail electromagnet attracts the corresponding slide rail; when the water gate opening signal output terminal of the data processor outputs a control signal, the coil of the first intermediate relay is powered on, the normally closed contact of the first intermediate relay is disconnected, the slide rail electromagnet is powered off, and the corresponding slide rail electromagnet releases the corresponding slide rail; The water bucket drainage control signal output terminal of the data processor is connected to the control terminal of the water bucket electric control drainage valve. When the water gate opening signal output terminal of the data processor outputs a signal, the water bucket drainage control signal output terminal of the data processor outputs an electrical signal to the water bucket electric control drainage valve, and the drainage weight of the water bucket decreases until the upward pulling force on the baffle is reduced to the threshold value, and the baffle slides down along the baffle slide rail according to its own gravity, gradually covering the water passing hole; when there is no signal output from the water bucket drainage control signal output terminal of the data processor, the water bucket electric control drainage valve is powered off, and the water storage weight of the water bucket increases until it reaches the weight threshold value, pulling the baffle to move up along the baffle slide rail; The first limit switch is arranged on the main dam body beside the electromagnet, and the sensing component of the first limit switch faces the slide rail; when the slide rail is attracted by the slide rail electromagnet, the first limit switch is in an off state; When the slide rail lifts upward from the main dam body and leaves the sensing component of the first limit switch, the signal output terminal of the first limit switch outputs a signal to the first limit switch signal input terminal of the data processor; The second limit switch and the third limit switch are both arranged on the slide rail: the second limit switch is located at the position of the slide rail opposite to the upper edge limit feedback interval of the water passing hole, and the upper edge limit feedback interval is the interval from the upper edge of the water passing hole to 30 cm above the upper edge; the third limit switch is located at the position of the slide rail opposite to the lower edge limit feedback interval of the water passing hole, and the lower edge limit feedback interval is the interval from the lower edge of the water passing hole to 30 cm below the lower edge; the sensing component of the second limit switch is lower than the lower edge of the water baffle when the water baffle rises in place, and the sensing component of the third limit switch is opposite to the side of the lower end of the water baffle when the water baffle descends in place; the vertical distance between the horizontal lines where the second limit switch and the third limit switch are located is less than or equal to the height of the water baffle; when the water baffle rises in place, the sensing components of the second limit switch and the third limit switch are not blocked, the second limit switch and the third limit switch are both in the off state and do not send signals; when the water baffle descends in place, the sensing component of the second limit switch is opposite to the side of the upper end of the water baffle at this time, the sensing component of the third limit switch is opposite to the side of the lower end of the water baffle at this time, and the second limit switch and the third limit switch respectively send signals to the second and third limit switch signal input ends of the data processor; during the rising or falling process of the water baffle, the sensing component of the second limit switch is blocked by the water baffle, while the sensing component of the third limit switch is not blocked by the water baffle, the second limit switch outputs a signal to the second limit switch signal input end of the data processor, and the signal output end of the third limit switch does not send a signal; The upstream water level sensor group of the sluice includes 2 upstream water level sensors: the first upstream water level sensor and the second upstream water level sensor. The installation heights of the upstream water level sensors are: the first upstream water level sensor < the second upstream water level sensor; the signal output ends of the first upstream water level sensor and the second upstream water level sensor are respectively connected to the first and second water level signal input ends of the data processor; the upstream water level sensor group of the sluice is arranged 1.5 meters upstream of the sluice; when the water level at the water level sensor group is lower than the position where the first upstream water level sensor is located, all water level sensors have no signals, and at this time it is in the "low" water level; when the water level at the water level sensor group is higher than the position where the first upstream water level sensor is located but lower than the position where the second upstream water level sensor is located, only the first upstream water level sensor has a signal and the second upstream water level sensor has no signal, and at this time it is in the "medium" water level; when the water level at the water level sensor group is higher than the position where the second upstream water level sensor is located, both the first and second upstream water level sensors have signals, and at this time it is in the "high" water level.

[0010] Further, for the novel sluice, it further includes a remote communication device, a remote host computer, and a on-site voice alarm. The remote host computer includes a mobile phone alarm signal output device and an intelligent voice broadcast speaker; the remote host computer is communicatively connected to the data processor through the remote communication device, and the data input / output end of the remote communication device is connected to the remote data input / output end of the data processor; the remote data input / output end of the data processor includes a host computer command receiving interface, a host computer programming data transmission interface, a data processor collected data uploading interface, and a data processor alarm signal uploading interface; the on-site alarm signal output end of the data processor is connected to the on-site voice alarm.

[0011] Further, the present invention also provides a control method based on the novel sluice, which includes the following steps: Step 1), the system performs a timed loop self-check; during a self-check process, the remote host computer sends a self-check signal to the data processor through the remote communication device. After the data processor passes the self-check, it uploads a normal self-check return signal through the remote communication device. If the remote host computer determines that both the remote communication device and the data processor are working properly, it enters Step 2); if the remote host computer does not receive the self-check return signal from the remote communication device, it means that the remote communication device or the data processor has a fault. The remote host computer sends an alarm message of "Remote communication device or data processor has a fault" to the administrator's mobile phone through the mobile phone alarm signal output device, and at the same time, the remote host computer repeatedly plays the voice signal of "Remote communication device or data processor has a fault" through the intelligent voice broadcast speaker; Step 2), the data processor determines whether there is a signal input at its upstream first and second water level signal input ends: If the data processor determines that signals are received at both its upstream first and second water level signal input ends, it enters Step 2-1); If the data processor determines that a signal is received at its upstream first signal input end, but no signal is received at the upstream second water level signal input end, it enters Step 2-2); If the data processor determines that no signals are received at both its upstream first and second water level signal input ends, it enters Step 2-3); If the data processor determines that the signals at its upstream first and second water level signal input ends do not belong to the above three situations, the data processor uploads a signal of "There is a water level sensor fault" to the host computer through its remote data input / output end and reports a fault alarm signal to the host computer; Step 2-1): The data processor determines that the water level upstream of the current sluice is "high", and uploads the aforementioned data acquisition signal through its remote data input / output terminal: "Signals are received at both the upstream low water level signal input terminal and the upstream high water level signal input terminal" to the host computer. At the same time, it uploads the "high" water level alarm signal upstream of the sluice to the voice alarm of the host computer to broadcast the voice signal of "High water level warning"; at the same time, the on-site alarm signal output terminal of the data processor outputs a drive signal to drive the on-site voice alarm to broadcast the voice signal of "High water level warning upstream of the sluice"; then, it enters Step 3); Step 2-2): The data processor determines that the water level upstream of the current sluice is "medium", and the data processor uploads the data acquisition signal through the remote data input / output terminal: "A signal is received at the upstream low water level signal input terminal, while no signal is input at the upstream high water level signal input terminal" to the host computer; return to Step 1); Step 2-3): The data processor determines that the water level upstream of the current sluice is "low", and the data processor uploads the data acquisition signal through the remote data input / output terminal: "No signals are input at both the upstream low water level signal input terminal and the upstream high water level signal input terminal" to the host computer. At the same time, it uploads the "low" water level alarm signal upstream of the sluice to the voice alarm of the host computer to broadcast the voice signal of "Low water level warning"; at the same time, the on-site alarm signal output terminal of the data processor outputs a drive signal to drive the on-site voice alarm to broadcast the voice signal of "Low water level warning upstream of the sluice"; then, it enters Step 8); Step 3): The data processor detects whether there is a signal input to the first limit switch. If there is a signal input to the input terminal of the first limit switch, at this time, the slide rail is in a state of being closely attached to the main dam body. The water gate opening signal output terminal of the data processor outputs the "Water gate opening" signal, and the drain bucket drainage control signal output terminal of the data processor outputs the "Drain valve closed" signal. The power supply control terminal of the slide rail electromagnet is powered off. Subsequently, the water flow thrust pushes the baffle to lift the water retaining plate and the slide rail, and the water discharge hole is opened and the flood discharge plate slides upward along the slide rail of the water retaining plate; then, it enters Step 4); If there is no signal input to the first limit switch, directly enter Step 4); Step 4): The data processor starts timing, that is, timing 1, and at the same time starts to detect whether there is a signal input to the input terminal of the first limit switch every 1 s: If there is a signal input to the input terminal of the first limit switch and it is still within the first timing cycle, continue timing and loop detection per second; If there is a signal input to the first limit switch and the first timing cycle has ended, upload the signal through the remote data input / output terminal: "Slide rail release timeout or first limit switch failure" to the host computer, and report the fault alarm signal to the host computer; If there is no signal input to the first limit switch and the timing 1 has not exceeded the set time, upload the signal through the remote data input / output terminal: "The water gate has been opened" to the host computer, and then enter Step 5); Step 5), the data processor starts timing, i.e., timing 2, and at the same time starts to detect whether there is a signal input from the third limit switch every 1 s and makes a judgment: If there is a signal input from the third limit switch, at this time the water baffle is in the state of descending in place, and if the timing 2 does not exceed the set time, continue timing and loop detection every second; If there is a signal input from the third limit switch and the timing 2 exceeds the set time, upload a signal: "Water baffle rising failure" to the host computer through the remote data input and output terminal, and report a fault alarm signal to the host computer; If there is no signal input from the third limit switch and the timing 2 does not exceed the set time, after uploading a signal: "Water baffle is in the rising state" to the host computer through the remote data input and output terminal, enter Step 6); Step 6), the data processor starts timing, i.e., timing 3, and at the same time starts to detect whether there is a signal input from the second limit switch every 1 s and makes a judgment: If there is a signal input from the second limit switch, and the timing 3 does not exceed the set time, continue timing and loop detection every second; If there is a signal input from the second limit switch and the timing 3 exceeds the set time, upload a signal: "Water baffle does not rise in place on time" to the host computer through the remote data input and output terminal, and report a fault alarm signal to the host computer; If there is no signal input from the second limit switch and the timing 3 does not exceed the set time, after uploading a signal: "Water baffle rises in place" to the host computer, enter Step 7); Step 7), the data processor starts timing, i.e., timing 4, and at the same time starts to detect whether there is a signal input from the first limit switch every 1 s and makes a judgment: If there is no signal input from the first limit switch, at this time the slide rail is in the unclosed state, and if the timing 4 does not exceed the set time, continue timing and loop detection every second; If there is a signal input from the first limit switch and the timing 4 exceeds the set time, upload a signal: "Slide rail does not reset on time" to the host computer through the remote data input and output terminal, and report a fault alarm signal to the host computer; If there is a signal input from the first limit switch and the timing 4 does not exceed the set time, after uploading a signal: "The floodgate is in the fully open state and has the condition for closing" to the host computer, return to Step 1); Step 8), the data processor detects whether there is a signal input at the first limit signal input terminal. If there is a signal input from the first limit switch, at this time the slide rail is in a state of being closely attached to the main dam body, and the data processor outputs a "gate closed" signal and a "drain valve open" signal at the gate opening signal output terminal. "Gate closed" controls the power control terminal of the slide rail electromagnet to be energized and attracted, locking the slide rail on the main dam body; "Drain valve open" controls the drain valve of the water receiving bucket to open, and the water receiving bucket starts to release water until the weight reaches the threshold value. Then the water receiving bucket moves upward and pulls the water baffle to slide downward along the water baffle slide rail, gradually closing the water passing hole; after that, it enters Step 9); if there is no signal input from the first limit switch, at this time the slide rail is in a state of not being closely attached to the main dam body and cannot be closed, then a signal is uploaded through the remote data input / output terminal: "The gate is currently in the open state but not reset" to the upper computer, and then it returns to Step 1). Step 9), the data processor starts timing, that is, timing for 5, and at the same time starts to detect whether there is a signal input from the second limit switch every 1 second and make a judgment: If there is no signal input from the second limit switch, at this time the water baffle is still in the state of rising in place, and the timing for 5 does not exceed the set time, then continue timing and loop detection per second; If there is no signal input from the second limit switch and the timing for 5 exceeds the set time, then a signal is uploaded through the remote data input / output terminal: "The water baffle did not start to descend on time" to the upper computer, and a fault alarm signal is reported to the upper computer; If there is a signal input from the second limit switch and the timing for 5 does not exceed the set time, then a signal is uploaded through the remote data input / output terminal: "The water baffle starts to descend" to the upper computer, and then it enters Step 10). Step 10), the data processor starts timing, that is, timing for 6, and at the same time starts to detect whether there is a signal input from the third limit switch every 1 second and make a judgment: If there is no signal input from the third limit switch, and the timing for 6 does not exceed the set time, then continue timing and loop detection per second; If there is no signal input from the third limit switch and the timing for 6 exceeds the set time, then a signal is uploaded through the remote data input / output terminal: "The water baffle did not descend in place on time" to the upper computer, and a fault alarm signal is reported to the upper computer; If there is a signal input from the second limit switch and the timing for 6 does not exceed the set time, then a signal is uploaded through the remote data input / output terminal: "The gate has been closed" to the upper computer, and then it returns to Step 1).

[0012] Further, for the novel floodgate, it further includes two sets of slide rail hinges and two sets of slide rail pressing devices. At the top of each of the two water retaining plate slide rails, a slide rail hinge is provided. The fixed part of the slide rail hinge is installed on the outer wall of the main dam body, and the rotating and moving part of the slide rail hinge is installed at the top of the water retaining plate slide rail. When the slide rail hinge is opened, the slide rail rotates around the slide rail hinge and lifts away from the main dam body. When the slide rail hinge is closed, the slide rail rotates vertically around the slide rail hinge and drops close to the main dam body. The two sets of slide rail pressing devices have the same structure and are symmetrically arranged. One set of slide rail pressing device includes: a pressing lever, a set of movable joint devices, a set of pressing electromagnets, and a spring tongue limiting device. The movable joint device includes a first and a second fixing mechanism arranged face to face and a movable joint disposed between the two fixing mechanisms. The first fixing mechanism is fixed on the pressing lever, and the second fixing mechanism is fixed on the slide rail. The axes of the two pressing levers are arranged horizontally. Taking the movable joint device as a reference point, the part of the pressing lever between the two slide rails is the inner side, and the part outside the two slide rails is the outer side of the pressing lever. The inner length of the pressing lever is longer than the outer length. In the pressed state, a set of pressing electromagnets is provided at the corresponding position where the inner end head of the pressing lever is close to the main dam body. The inner end head of the pressing lever is made of a magnetic material. A spring tongue limiting device is provided at the corresponding position where the outer end head of the pressing lever is close to the main dam body. The spring tongue limiting device includes a fixed lock body and a spring tongue. The fixed lock body is fixed on the main dam body, and the spring tongue is elastically installed on the fixed lock body. The telescopic direction of the spring tongue is parallel to the main dam body. The surface of the spring tongue facing the main dam body is a flat surface, and the other surface of the spring tongue facing away from the main dam body is an inclined surface that gradually inclines downward from the fixed lock body to the distal end toward the main dam body. In the pressed state, the outer end head of the pressing lever is restricted between the flat surface of the spring tongue and the main dam body, and the inner end head of the pressing lever is tightly attracted to the electromagnet. At this time, the pressing lever presses the slide rail against the main dam body. When the pressing electromagnet is powered off, the inner end head of the pressing lever is released, and the water retaining plate together with the slide rail rotates upward around the slide rail hinge under the water flow thrust, and the bottom of the water retaining plate and the slide rail moves away from the main dam body. The pressing lever together with the slide rail moves in the direction away from the main dam body. Then, the spring tongue blocks the lifting of the outer end head of the pressing lever, and the pressing lever rotates around the movable joint device until it rotates through a sufficient angle and then the pressing lever slides off from under the spring tongue, and the pressing lever then enters a free state; When restoring from the released state to the pressed state, the pressing lever gradually approaches the main dam body driven by the slide rail. The outer end head of the pressing lever presses on the inclined surface of the spring tongue, pressing the spring tongue until it retracts into the fixed lock body. At the same time, the inner end head of the pressing lever approaches the pressing electromagnet. After the pressing electromagnet is powered on, the inner end head of the pressing lever is tightly attracted to the pressing electromagnet.

[0013] The novel sluice and the control method based on the novel sluice provided by the present invention are convenient and efficient to operate when adjusting the water level, and do not require on-site manual operation during normal operation, greatly protecting the personal safety of maintenance personnel; when the water level exceeds the set value, remote and on-site early warnings are given in a timely manner; it has the advantages of wide application range, simple structure, easy installation, low construction cost and maintenance cost, energy saving during operation, and high reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1A 、 Figure 1B The figures respectively show the front structural schematic diagram and the side cross-sectional view of an embodiment of the novel sluice; Figure 2 The figure shows an enlarged view of the installation structure of the water retaining plate slide rail and the water retaining plate; Figure 3 The figure shows an enlarged view of the slider structure; Figure 4A 、 Figure 4B The figures respectively show the front structural schematic diagram and the side cross-sectional view of another embodiment of the novel sluice. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The present invention provides a novel sluice, which is used to be arranged on the outer wall of the water outlet side of the water passing hole of the main dam body, adopts an upper suspension structure, is locked by magnetic force, and realizes the automatic reset of the dam gate by using the gravity of the water flow. Figure 1A 、 Figure 1B The figures respectively show the front structural schematic diagram and the side cross-sectional view of the novel sluice, Figure 1A and Figure 1B All the reference numerals in are explained as follows: reference numeral 1 is the main dam body, reference numeral 2 is the fixed pulley, reference numeral 3 is the slide rail hinge, reference numeral 4 is the water retaining plate slide rail, reference numeral 5 is the water retaining plate, reference numeral 6 is the water passing hole, reference numeral 7 is the slide rail electromagnet, reference numeral 8 is the water receiving bucket, reference numeral 9 is the water receiving bucket slide rail, and reference numeral 10 is the steel cable.

[0016] The novel sluice includes two water retaining plate slide rails (the two water retaining plate slide rails are symmetrically arranged left and right in the figure, and only one water retaining plate slide rail is marked, with the reference numeral 4), a water retaining plate 5, and a set of water retaining plate lifting devices; the two water retaining plate slide rails are respectively installed on the outer walls of the left and right sides of the main dam body 1 of the water passing hole 6. Since the water passing hole 6 is blocked by the water retaining plate 5, it is shown by a dotted line in the figure; the two water retaining plate slide rails are parallel and both are vertically installed, and the water retaining plate 5 is arranged between the two slide rails, forming an upper suspension structure together with the slide rails.

[0017] Figure 2The water baffle slide rail and the water baffle installation structure enlarged view is shown. A set of sliding limit devices that cooperate with the water baffle slide rail are respectively provided on both sides of the water baffle 5, so that the water baffle can slide along the slide rail: the water baffle slide rail 4 is long and has an I-shaped or horizontal H-shaped cross section. The water baffle 5 is provided with an L-shaped folding edge on both sides, so that it forms a nested structure with a certain gap with the slide rail 4. Here, the space between the two slide rails 4 is the inner side, and the space outside the two slide rails 4 is the outer side. The L-shaped folding edge is on the outer side of the slide rail 4. On the other hand, at the same time, retaining bars or limit bars are set at appropriate positions on the inner sides of the two slide rails 4 to prevent the nested structure from falling out; the water retaining plate 5 can slide along the slide rail 4, but will not fall off the slide rail during the sliding process; in addition to this form, the water retaining plate slide rail 4 can also be designed into other forms, such as a Z shape, or the slide rail can be designed as a square solid steel bar, or the slide rail can be designed as a rectangular hollow steel bar. Accordingly, the L-shaped folded edge on the side of the water retaining plate 5 for enclosure and the retaining bars or limit bars on both sides cooperate with the corresponding slide rails to play a limiting role.

[0018] The novel sluice gate further includes two sets of slide rail hinges 3 and two sets of slide rail electromagnets 7; a slide rail hinge 3 is provided at the top of each of the two water baffle slide rails 4, and a slide rail electromagnet 7 is provided at the bottom of each of the two water baffle slide rails 4; the fixed parts of the slide rail hinges 3 are installed on the outer wall of the main dam body 1, and the rotating moving parts of the slide rail hinges 3 are installed on the top of the water baffle slide rails 4. When the slide rail hinges 3 are opened, the slide rails 4 rotate around the slide rail hinges 3 and are lifted away from the main dam body 1. When the slide rail hinges 3 are closed, the slide rails 4 rotate around the slide rail hinges 3 and fall close to the main dam body 1; the slide rail hinges are closed. In the state, the slide rail electromagnet 7 provides magnetic force to keep it in the fitted state, and at the same time, the water retaining plate slide rail 4 presses the water retaining plate 5 to fit on the outer wall of the main dam body 1; each set of slide rail electromagnets can include only one electromagnet, which can be of fixed specifications or an adjustable electromagnet. The adjustable electromagnet can adjust the magnetic force by adjusting the current to achieve different sluice opening water levels; each set of slide rail electromagnets can also be a combination of two or more electromagnets. Turning on different numbers of electromagnets corresponds to different sluice opening water levels, which can achieve gradient adjustment.

[0019] The lifting component of the water baffle lifting device is connected to the water baffle 5, and the fixing component of the water baffle lifting device is fixed on the main dam body: The water baffle lifting device includes a water receiving bucket 8, a water receiving bucket slide rail 9, a fixed pulley 2, and a steel cable 10. The water receiving bucket 8 is used to receive the water leaking from the water passing hole 6 of the main dam body; a drain hole is provided at the bottom or the middle and lower part of the side wall of the water receiving bucket 8, and an electric control drain valve is installed on the drain hole; the steel cable 10 is the lifting component. One end of the steel cable 10 is connected to the handle of the water receiving bucket 8, and the other end of the steel cable 10 is connected to the upper end of the water baffle 5. The middle part of the steel cable 10 is wound around the rotating device of the fixed pulley 2. The fixed part of the fixed pulley 2 is fixedly installed on the outer wall of the main dam body 1, and the fixed part of the fixed pulley 2 is the fixed component of the water baffle lifting device; when the electric control drain valve is energized and closed, the water receiving bucket 8 continuously receives water and its weight increases, the water receiving bucket 8 descends, the water receiving bucket 8 pulls the steel cable 10, and the steel cable 10 pulls the water baffle 5 at the other end to relatively lift around the fixed pulley 2; when the electric control drain valve is de-energized and the valve is opened, at this time, the water in the water receiving bucket 8 is discharged and its weight is reduced, the steel cable 10 is pulled by the gravity of the water baffle 5, the water baffle 5 descends, and the water receiving bucket 8 is pulled and lifted; A slider is fixedly connected to the outer wall of the water receiving bucket 8. The slider is slidably fitted in the water receiving bucket slide rail 9, and the water receiving bucket slide rail 9 is vertically installed on the outer wall of the main dam body 1; the descent or ascent of the water receiving bucket 8 slides along the water receiving bucket slide rail 9. As Figure 3 shown in the enlarged view of the slider structure, the slider is of a T-shaped structure. The free end of the vertical rod in the T-shaped structure is fixed to the outer wall of the water receiving bucket 8. The two ends of the horizontal bar in the T-shaped structure are respectively fixed to the axles of two rollers. The rollers rotate around the axles, so that the slider slides along the axis of the water receiving bucket slide rail 9 in the water receiving bucket slide rail 9; the cross-section of the water receiving bucket slide rail 9 is concave-shaped and semi-closed. At the openings on both sides of the concave shape of the water receiving bucket slide rail 9, a long strip limiting plate with an inwardly curled L-shaped cross-section is provided on each side and turned inward. The two long strip limiting plates are arranged back to back; each long strip limiting plate and the corresponding side of the water receiving bucket slide rail form a limiting receiving groove of a long strip-shaped space. The two rollers of the slider are respectively installed and limited in the limiting receiving grooves on the corresponding sides. The rollers roll in the receiving grooves to make the whole slider move axially along the water receiving bucket slide rail 9. The gap between the two receiving grooves is used to limit the vertical rod in the T-shaped structure of the slider; the steel cable 10 is parallel to the water receiving bucket slide rail 9. The water receiving bucket 8 and the water receiving bucket slide rail 9 are arranged below the water baffle 5; one side of the water receiving bucket is a plane, and the cross-section of the water receiving bucket is D-shaped. The water receiving bucket can also be designed as a cuboid or a cube. The water receiving bucket can also be of any shape.

[0020] In addition, in another embodiment, a water diversion pipe can be provided on the main dam body on one side of the water passing hole, and the water receiving bucket and the water receiving bucket slide rail are arranged below the water diversion pipe on the main dam body.

[0021] The described new type of sluice also includes an automated electric control system, which includes a data processor, a first intermediate relay, a water level sensor group upstream of the sluice, a first limit switch 15c, a second limit switch 15a, and a third limit switch 15b; in this embodiment, the data processor uses a PLC; the signal output terminals of the first limit switch 15c, the second limit switch 15a, and the third limit switch 15b are respectively connected to the signal input terminals of the first limit switch 15c, the second limit switch 15a, and the third limit switch of the PLC; The sluice opening signal output terminal of the PLC is connected to the ground after being connected in series with the coil of the first intermediate relay, and the normally closed contact of the first intermediate relay is connected between the power supply of the slide rail electromagnet and the slide rail electromagnet; when there is no signal output from the sluice opening signal output terminal of the PLC and the slide rail electromagnet is in the powered-on state, the corresponding slide rail electromagnet attracts the corresponding slide rail; when the sluice opening signal output terminal of the PLC outputs a control signal, the coil of the first intermediate relay is powered on, the normally closed contact of the first intermediate relay is disconnected, the slide rail electromagnet is powered off, and the corresponding slide rail electromagnet releases the corresponding slide rail; The drainage control signal output terminal of the PLC for the water receiving bucket is connected to the control terminal of the electrically controlled drainage valve of the water receiving bucket. When the sluice opening signal output terminal of the PLC outputs a signal, the drainage control signal output terminal of the PLC for the water receiving bucket outputs an electrical signal to the electrically controlled drainage valve of the water receiving bucket, and the drainage weight of the water receiving bucket decreases until the upward pulling force on the water retaining plate decreases to the threshold value, and the water retaining plate slides down along the water retaining plate slide rail by its own gravity and gradually covers the water passing hole; when there is no signal output from the drainage control signal output terminal of the PLC for the water receiving bucket, the electrically controlled drainage valve of the water receiving bucket is powered off, and the water storage weight of the water receiving bucket increases until it reaches the weight threshold value, pulling the water retaining plate to move upward along the water retaining plate slide rail; The first limit switch 15c is arranged on the main dam body beside the slide rail electromagnet, and the sensing component of the first limit switch 15c faces the slide rail; when the slide rail is attracted by the slide rail electromagnet, the first limit switch 15c is in the off state; when the slide rail leaves the main dam body and lifts upward away from the sensing component of the first limit switch 15c, the signal output terminal of the first limit switch 15c outputs a signal to the signal input terminal of the first limit switch 15c of the PLC; The second limit switch 15a and the third limit switch 15b are both arranged on the slide rail: The second limit switch 15a is located at the position of the slide rail opposite to the upper edge limit feedback interval of the water passing hole. The upper edge limit feedback interval is the interval from the upper edge to 30 cm above the upper edge. Preferably, it is at the position of the slide rail opposite to the horizontal line in the interval of 10 - 20 cm above the upper edge of the water passing hole, such as the positions of the slide rail corresponding to the horizontal lines at 10 cm, 12 cm, and 15 cm above the upper edge of the water passing hole. The third limit switch 15b is located at the position of the slide rail opposite to the lower edge limit feedback interval of the water passing hole. The lower edge limit feedback interval is the interval from the lower edge to 30 cm above the lower edge. Preferably, it is at the position of the slide rail opposite to the horizontal line in the interval of 10 - 20 cm below the lower edge of the water passing hole, such as the positions of the slide rail corresponding to the horizontal lines at 10 cm, 12 cm, and 15 cm below the lower edge of the water passing hole; The sensing component of the second limit switch 15a is located at the lower edge of the water baffle when the water baffle rises to the in-place position. The sensing component of the third limit switch 15b is opposite to the side of the lower end of the water baffle when the water baffle descends to the in-place position; The vertical distance between the horizontal lines where the second limit switch 15a and the third limit switch 15b are located is less than or equal to the height of the water baffle; When the water baffle rises to the in-place position, the sensing components of the second limit switch 15a and the third limit switch 15b are not blocked, and the second limit switch 15a and the third limit switch 15b are both in the off state and do not send signals; When the water baffle descends to the in-place position, the sensing component of the second limit switch 15a is opposite to the side of the upper end of the water baffle at this time, and the sensing component of the third limit switch 15b is opposite to the side of the lower end of the water baffle at this time. The second limit switch 15a and the third limit switch 15b respectively send signals to the second and third limit switch signal input ends of the PLC; During the rising or falling process of the water baffle, the sensing component of the second limit switch 15a is blocked by the water baffle, while the sensing component of the third limit switch 15b is not blocked by the water baffle. The second limit switch 15a outputs a signal to the second limit switch signal input end of the PLC, and the signal output end of the third limit switch 15b does not send a signal; Each of the above limit switches adopts a waterproof travel switch, such as a lever type or magnetic induction type switch.

[0022] The upstream water level sensor group of the sluice includes 2 upstream water level sensors: the first upstream water level sensor and the second upstream water level sensor. The heights at which each upstream water level sensor is set are: the first upstream water level sensor < the second upstream water level sensor; The signal output ends of the first upstream water level sensor and the second upstream water level sensor are respectively connected to the first water level signal input end and the second water level signal input end of the PLC; The upstream water level sensor group of the sluice is set at a position 1.5 - 5 meters upstream of the sluice.

[0023] The described new type of sluice also includes a remote communication device, a remote host computer, and a on-site voice alarm. The remote host computer includes a mobile phone alarm signal output device and an intelligent voice broadcast speaker; the remote host computer is communicatively connected to the data processor through the remote communication device, and the data input / output end of the remote communication device is connected to the remote data input / output end of the data processor; the remote data input / output end of the data processor includes a host computer command receiving interface, a host computer programming data transmission interface, a data processor collected data uploading interface, and a data processor alarm signal uploading interface; the on-site alarm signal output end of the data processor is connected to the on-site voice alarm; the remote communication device is a wireless communication module.

[0024] The present invention also provides a control method based on the foregoing new type of sluice, wherein three different water levels, namely "high", "medium", and "low", are set, and the method includes the following steps: Step 1), the system performs a timed loop self-check; during a self-check process, the remote host computer sends a self-check signal to the data processor through the remote communication device. After the data processor passes the self-check, it uploads a normal self-check return signal through the remote communication device. If the remote host computer determines that both the remote communication device and the data processor are working properly, it proceeds to Step 2); if the remote host computer does not receive the self-check return signal from the remote communication device, it means that the remote communication device or the data processor has a fault. The remote host computer sends an alarm message "The remote communication device or the data processor has a fault" to the administrator's mobile phone through the mobile phone alarm signal output device, and at the same time, the remote host computer repeatedly plays the voice signal "The remote communication device or the data processor has a fault" through the intelligent voice broadcast speaker; Step 2), the data processor determines whether there is a signal input to its first and second upstream water level signal input ends: If the data processor determines that signals are received at both its first and second upstream water level signal input ends, it proceeds to Step 2-1); If the data processor determines that a signal is received at its first upstream signal input end but no signal is received at the second upstream water level signal input end, it proceeds to Step 2-2); If the data processor determines that no signals are received at both its first and second upstream water level signal input ends, it proceeds to Step 2-3); If the data processor determines that the signals at its first and second upstream water level signal input ends do not belong to the above three situations, the data processor uploads the signal "There is a water level sensor fault" to the host computer through its remote data input / output end and reports a fault alarm signal to the host computer; Step 2-1): The data processor determines that the water level upstream of the current sluice is "high", and uploads the above-mentioned data acquisition signal: "Signals are received at both the upstream low water level signal input terminal and the upstream high water level signal input terminal" to the upper computer through its remote data input and output terminal. At the same time, it uploads the "high" water level alarm signal upstream of the sluice to the voice alarm of the upper computer to broadcast the voice signal of "high water level warning"; at the same time, the on-site alarm signal output terminal of the data processor outputs a drive signal to drive the on-site voice alarm to broadcast the voice signal of "high water level warning upstream of the sluice"; then, it enters Step 3). Step 2-2): The data processor determines that the water level upstream of the current sluice is "medium". The data processor uploads the data acquisition signal through the remote data input and output terminal: "A signal is received at the upstream low water level signal input terminal, while no signal is input at the upstream high water level signal input terminal" to the upper computer; return to Step 1). Step 2-3): The data processor determines that the water level upstream of the current sluice is "low". The data processor uploads the data acquisition signal through the remote data input and output terminal: "No signals are input at both the upstream low water level signal input terminal and the upstream high water level signal input terminal" to the upper computer. At the same time, it uploads the "low" water level alarm signal upstream of the sluice to the voice alarm of the upper computer to broadcast the voice signal of "low water level warning"; at the same time, the on-site alarm signal output terminal of the data processor outputs a drive signal to drive the on-site voice alarm to broadcast the voice signal of "low water level warning upstream of the sluice"; then, it enters Step 8). Step 3): The data processor detects whether there is a signal input to the first limit switch. If there is a signal input to the first limit switch input terminal, at this time, the slide rail is in a state of being closely attached to the main dam body. The water gate opening signal output terminal of the data processor outputs the "water gate opening" signal, and the drainage control signal output terminal of the water receiving bucket of the data processor outputs the "drainage valve closed" signal. The power supply control terminal of the slide rail electromagnet is powered off. Subsequently, the water flow thrust pushes the baffle to lift the water retaining plate and the slide rail, and the water discharge hole is opened, and the flood discharge plate slides upward along the slide rail of the water retaining plate; then, it enters Step 4); if there is no signal input to the first limit switch, directly enter Step 4). Step 4): The data processor starts timing, that is, timing 1, and at the same time starts to detect whether there is a signal input to the first limit switch input terminal every 1 s: If there is a signal input to the first limit switch input terminal and it is still within the first timing cycle, continue timing and cycle detection per second; If there is a signal input to the first limit switch and the first timing cycle has ended, upload the signal through the remote data input and output terminal: "The slide rail release times out or the first limit switch fails" to the upper computer, and report the fault alarm signal to the upper computer; If there is no signal input to the first limit switch and the timing 1 has not exceeded the set time, upload the signal through the remote data input and output terminal: "The water gate has been opened" to the upper computer, and then enter Step 5). Step 5), the data processor starts timing, i.e., timing 2, and at the same time starts to detect whether there is a signal input from the third limit switch every 1 s and makes a judgment: If there is a signal input from the third limit switch, at this time the water baffle is in the state of being lowered in place, and the timing 2 does not exceed the set time, then continue timing and loop detection per second; If there is a signal input from the third limit switch and the timing 2 exceeds the set time, then upload the signal: "Water baffle rising failure" to the upper computer through the remote data input / output terminal, and report the fault alarm signal to the upper computer; If there is no signal input from the third limit switch and the timing 2 does not exceed the set time, then upload the signal: "Water baffle is in the rising state" to the upper computer, and then enter Step 6); Step 6), the data processor starts timing, i.e., timing 3, and at the same time starts to detect whether there is a signal input from the second limit switch every 1 s and makes a judgment: If there is a signal input from the second limit switch, and the timing 3 does not exceed the set time, then continue timing and loop detection per second; If there is a signal input from the second limit switch and the timing 3 exceeds the set time, then upload the signal: "Water baffle does not rise in place on time" to the upper computer through the remote data input / output terminal, and report the fault alarm signal to the upper computer; If there is no signal input from the second limit switch and the timing 3 does not exceed the set time, then upload the signal: "Water baffle rises in place" to the upper computer, and then enter Step 7); Step 7), the data processor starts timing, i.e., timing 4, and at the same time starts to detect whether there is a signal input from the first limit switch every 1 s and makes a judgment: If there is no signal input from the first limit switch, at this time the slide rail is in the unclosed state, and the timing 4 does not exceed the set time, then continue timing and loop detection per second; If there is a signal input from the first limit switch and the timing 4 exceeds the set time, then upload the signal: "Slide rail does not reset on time" to the upper computer through the remote data input / output terminal, and report the fault alarm signal to the upper computer; If there is a signal input from the first limit switch and the timing 4 does not exceed the set time, then upload the signal: "The floodgate is in the fully open state and has the condition to be closed" to the upper computer, and then return to Step 1); Step 8): The data processor detects whether there is a signal input at the first limit signal input terminal. If there is a signal input from the first limit switch, at this time the slide rail is in a state of being closely attached to the main dam body, and the data processor outputs a "gate closed" signal and a "drain valve open" signal at the gate opening signal output terminal. "Gate closed" controls the power control terminal of the slide rail electromagnet to be energized and attracted, locking the slide rail on the main dam body; "Drain valve open" controls the opening of the drain valve of the water receiving bucket, and the water receiving bucket starts to drain water until the weight reaches the threshold value. The water receiving bucket moves upward and pulls the baffle plate to slide downward along the baffle plate slide rail, gradually closing the water passing hole; then, it enters Step 9). If there is no signal input from the first limit switch, at this time the slide rail is in a state of not being closely attached to the main dam body and cannot be closed, then a signal is uploaded through the remote data input / output terminal: "The gate is currently in the open state but not reset" to the upper computer, and then it returns to Step 1). Step 9): The data processor starts timing, that is, timing 5, and at the same time starts to detect whether there is a signal input from the second limit switch every 1 s and makes a judgment: If there is no signal input from the second limit switch, at this time the baffle plate is still in the state of rising in place, and the timing 5 does not exceed the set time, then continue timing and loop detection per second; If there is no signal input from the second limit switch and the timing 5 exceeds the set time, then a signal is uploaded through the remote data input / output terminal: "The baffle plate did not start to descend on time" to the upper computer, and a fault alarm signal is reported to the upper computer; If there is a signal input from the second limit switch and the timing 5 does not exceed the set time, then a signal is uploaded through the remote data input / output terminal: "The baffle plate starts to descend" to the upper computer, and then it enters Step 10). Step 10): The data processor starts timing, that is, timing 6, and at the same time starts to detect whether there is a signal input from the third limit switch every 1 s and makes a judgment: If there is no signal input from the third limit switch, and the timing 6 does not exceed the set time, then continue timing and loop detection per second; If there is no signal input from the third limit switch and the timing 6 exceeds the set time, then a signal is uploaded through the remote data input / output terminal: "The baffle plate did not descend in place on time" to the upper computer, and a fault alarm signal is reported to the upper computer; If there is a signal input from the second limit switch and the timing 6 does not exceed the set time, then a signal is uploaded through the remote data input / output terminal: "The gate has been closed" to the upper computer, and then it returns to Step 1).

[0025] In addition to the above control method, more water level sensors can be set to achieve the division of multiple water levels, and the gate can be automatically opened or closed at different water levels according to needs through program settings. The water level sensor can adopt a float type water level sensor. When the water level drops to the specified water level, the float at the corresponding water level changes from a floating state to a suspended state, outputting a corresponding switch quantity signal. Other forms of water level sensors can also be used.

[0026] The present invention also provides another embodiment of the new sluice. In addition to the water retaining plate 5, the water retaining plate slide rail 4, the water retaining plate lifting device, and a set of slide rail hinges 3 provided at the upper ends of the two water retaining plate slide rails as described above, it further includes two sets of slide rail pressing devices, such as Figure 4A , Figure 4B The following shows the front structure schematic diagram and the side cross-sectional view of the new sluice in another embodiment: The two sets of slide rail pressing devices have the same structure and are symmetrically arranged; one set of slide rail pressing devices includes a pressing lever 12, a set of movable joint devices 11, a set of pressing electromagnets 7, and a spring tongue limiting device. The movable joint device 11 includes a first and a second fixing mechanism arranged face to face and a movable joint movably connected between the two fixing mechanisms. The first fixing mechanism is fixed on the pressing lever 12, and the second fixing mechanism is fixed on the slide rail 4; the axes of the two pressing levers 12 are arranged horizontally; taking the movable joint device 11 as a reference point, the part of the pressing lever 12 between the two slide rails is the inner side, and the part outside the two slide rails is the outer side of the pressing lever 12. The inner side length of the pressing lever 12 is longer than the outer side length. Preferably, the inner side length of the pressing lever 12 is 2 to 5 times the outer side length; in the pressed state, a set of pressing electromagnets 7 is arranged at the corresponding position where the inner end head of the pressing lever 12 is close to the main dam body. The inner end head of the pressing lever 12 is made of a magnetic material or connected and fixed with a magnetic material such as an iron block; a spring tongue limiting device is arranged at the corresponding position where the outer end head of the pressing lever 12 is close to the main dam body; the spring tongue limiting device includes a fixed lock body 13 and a spring tongue 14. The fixed lock body 13 is fixed on the main dam body, and the spring tongue 14 is elastically installed on the fixed lock body 13. The telescopic direction of the spring tongue 14 is parallel to the surface of the main dam body. The surface of the spring tongue 14 facing the main dam body is a flat surface, and the surface of the spring tongue 14 facing away from the main dam body is an inclined surface that gradually inclines downward from the position of the fixed lock body 13 to the distal end of the tip of the spring tongue towards the main dam body; in the pressed state, the outer end head of the pressing lever 12 is restricted between the flat surface of the spring tongue 14 and the outer wall surface of the main dam body 1, and the inner end head of the pressing lever 12 is attracted and tightened by the electromagnet 7; at this time, the pressing lever 12 presses the slide rail 4 against the main dam body 1; when the pressing electromagnet 7 is powered off, the inner end head of the pressing lever 12 is released, and the water retaining plate together with the slide rail rotates upward around the slide rail hinge under the thrust of the water flow. The bottom of the water retaining plate 5 and the slide rail 4 move away from the main dam body, and the pressing lever 12 together with the slide rail 4 moves away from the main dam body accordingly. Then the spring tongue 14 blocks the lifting of the outer end head of the pressing lever 12, and the pressing lever 12 rotates around the movable joint device until it rotates by a sufficient angle and then the pressing lever 12 slides off from the spring tongue 14, and the pressing lever 12 then enters a free state; When restoring from the release state to the pressing state, the pressing lever 12 gradually approaches the main dam body driven by the slide rail. The outer end head of the pressing lever 12 presses on the inclined surface of the spring lock tongue 14, pressing the spring lock tongue 14 until it retracts into the fixed lock body 13. At the same time, the inner end head of the pressing lever 12 approaches the pressing electromagnet 7. After the pressing electromagnet 7 is powered on, the inner end head of the pressing lever 12 is tightly attracted to the pressing electromagnet 7.

[0027] When the slide rail is locked, the magnetic force arm of the pressing electromagnet is magnified several times by the pressing lever. For example, taking the center point of the spring lock tongue in the ejected state as the reference, the distance between the central axis of the slide rail and the center point of the lock tongue is 0.2 m, and the distance between the pressing electromagnet and the center point of the lock tongue is 1 m. At this time, the magnetic force arm of the electromagnet will be magnified by 5 times, and only 1 / 5 of the magnetic force in the first embodiment can be used to achieve equivalent control.

[0028] The electronically controlled drain valve of the above-mentioned water receiving bucket can use a solenoid valve, which is suitable for the situation where the water flow is relatively clear, there is no debris, and it is not easy to block the valve. Since the solenoid valve can be opened and closed at any water level, the water level in the bucket can be adjusted by opening and closing the valve, and then the rising and falling speeds of the water retaining plate can be adjusted. The electronically controlled drain valve of the water receiving bucket can also be set as a micro magnetic flap dam, which is also controlled by the switching quantity output by the PLC. The micro magnetic flap dam is suitable for the situation where there is a lot of debris in the water flow and it is easy to be blocked.

[0029] In this technical solution, multiple sets of water retaining devices can be set on a main dam body, and each set of water retaining devices can be independently controlled. The opening and closing of the electromagnet and the magnitude of the magnetic force can be indirectly controlled by setting a PLC, so as to remotely control the opening and closing of any water retaining device. On this basis, a remote communication module and a dedicated APP can also be set to realize the remote control of the opening and closing of any water retaining device by a mobile phone or other devices. The present invention utilizes the adjustable magnetic force of the electromagnet. After being forcibly opened, the device is not damaged or worn, and the gate is locked and opened. Then, the water flow power after the sluice is opened is used as the power for the water retaining plate to reset, so that the repeated opening and closing of the sluice can be realized. In addition, this sluice can be set to open under a specific water pressure (water level), and the opening process is absolutely reliable and almost lossless. This sluice can cope with sudden water flows, and situations where the water flow carries stones or trees, etc. Compared with ordinary lifting sluices, this sluice can open the water passing hole when powered off. The opening process is energy-saving and reliable, and the water retaining plate reset process has almost no energy consumption. After this sluice is opened for a period of time, even if the water level at the location of the sluice does not decrease, the water passing hole can be closed. This sluice has a simple and reliable structure, does not require high-power motors, hydraulic devices, etc., and has a low cost. Usually, only several electromagnets need to be maintained, with low power and small maintenance volume. This sluice can be combined with other dam bodies. For example, an ordinary lifting sluice can be used as the main dam body, and this sluice can be set on it. Even if this sluice uses a large water retaining plate, it can also be used as the main dam body, and a small sluice of this type can be set on it. Each set of sluice devices can be independently controlled. By opening different numbers of water passing holes, the total water flow rate can be adjusted. In addition, other forms can also be used for the water retaining plate lifting device, such as setting a waterwheel, a flywheel, a chain to achieve lifting, or directly driving the lifting by a motor, etc.

[0030] As described above, the above are only the specific implementation manners of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered by the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A new type of sluice, which is used to be arranged on the outer wall of the water outlet side of the water passing hole of the main dam body, is characterized in that, Including: Two water baffle slide rails, one water baffle, and one set of water baffle lifting device; the two water baffle slide rails are respectively installed on the outer walls of the main dam body on the left and right sides of the water passing hole. The water baffle slide rails are installed vertically, and the two water baffle slide rails are parallel. A limiting device that cooperates with and is embedded and slidable on the water baffle slide rail is provided on each side of the water baffle. The lifting component of the water baffle lifting device is connected to the water baffle, and the fixing component of the water baffle lifting device is fixed on the main dam body.

2. The novel sluice according to claim 1, characterized in that: The slide rail is strip-shaped, and its cross-section is I-shaped, that is, the upper flat plate and the lower flat plate are arranged in parallel, and the middle connecting plate is fixedly connected to both the upper flat plate and the lower flat plate; L-shaped flanges are respectively provided on the left and right sides of the water baffle. The two L-shaped flanges are arranged on the same surface of the water baffle. A U-shaped space opening to the right is formed between the L-shaped flange on the left side of the water baffle and the water baffle, and a U-shaped space opening to the left is formed between the L-shaped flange on the right side of the water baffle and the water baffle. A limiting strip is respectively provided on the left and right side plates on the same surface of the water baffle. The dimension between the limiting strip and the vertical side of the L-shaped flange on the same side is for accommodating the width of the lower flat plate of the slide rail, and the dimension between the limiting strip and the horizontal side of the L-shaped flange on the same side is for accommodating the thickness of the lower flat plate of the slide rail; the left and right limiting strips are parallel to the axes of the left and right U-shaped spaces; the lower flat plate of the corresponding slide rail is sleeved in the U-shaped space on the corresponding side.

3. The novel sluice according to claim 2, characterized in that It also includes two sets of slide rail hinges and two sets of slide rail electromagnets; a slide rail hinge is provided at the top of each of the two water baffle slide rails. The fixing component of the slide rail hinge is installed on the outer wall of the main dam body, and the rotating and moving component of the slide rail hinge is installed at the top of the water baffle slide rail. When the slide rail hinge is opened, the slide rail rotates around the slide rail hinge and lifts away from the main dam body. When the slide rail hinge is closed, the slide rail rotates around the slide rail hinge and drops close to the main dam body; a slide rail electromagnet is provided at the position where the bottom of each of the two water baffle slide rails drops close to the main dam body; when the slide rail hinge is in the closed state, the water baffle slide rail presses the water baffle against the outer wall of the main dam body, and a set of slide rail electromagnets is provided at the position where the bottom of the water baffle slide rail corresponds to and fits against the outer wall of the main dam body when the slide rail hinge is in the closed state.

4. The novel sluice according to claim 3, characterized in that The water baffle lifting device includes a water receiving bucket, a water receiving bucket slide rail, a fixed pulley, and a steel cable. The water receiving bucket is used to receive the water leaking from the water passing hole of the main dam body; a drainage hole is provided at the bottom or the middle and lower part of the side wall of the water receiving bucket, and an electronically controlled drainage valve is installed on the drainage hole; one end of the steel cable is connected to the handle of the water receiving bucket, and the other end of the steel cable is connected to the upper end of the water baffle. The middle part of the steel cable is wound around the rotating device of the fixed pulley. The fixed part of the fixed pulley is fixedly installed on the outer wall of the main dam body. When the electronically controlled drainage valve is closed, the water receiving bucket continuously receives water and its weight increases, and the water receiving bucket descends. The water receiving bucket pulls the steel cable, and the steel cable pulls the water baffle at the other end to relatively lift around the fixed pulley; when the electronically controlled drainage valve is opened, the water in the water receiving bucket is discharged and its weight is reduced. The steel cable is pulled by the gravity of the water baffle, the water baffle descends, and the water receiving bucket is pulled to lift. A slider is fixedly connected to the outer wall of the water receiving bucket, and the slider is slidably embedded in the water receiving bucket slide rail. The water receiving bucket slide rail is vertically installed on the outer wall of the main dam body; the descent or ascent of the water receiving bucket slides along the water receiving bucket slide rail. The slider is of a T-shaped structure. The free end of the vertical rod in the T-shaped structure is fixed on the outer wall of the water receiving bucket, and the two ends of the horizontal rod in the T-shaped structure are respectively fixed with the axles of two rollers. The cross-section of the water receiving bucket slide rail is concave-shaped and semi-closed. At the openings on both sides of the concave shape of the water receiving bucket slide rail, inwardly curling long strip limiting plates are respectively arranged on the inner sides, and the two long strip limiting plates are arranged back to back. Each long strip limiting plate and the corresponding side of the water receiving bucket slide rail form a limiting receiving groove for a long strip-shaped space. The two rollers of the slider are respectively installed and limited in the limiting receiving grooves on the corresponding sides. The rollers roll in the receiving grooves to make the whole slider move axially along the water receiving bucket slide rail. The gap opening between the two receiving grooves is used to limit the vertical rod in the T-shaped structure of the slider. The steel cable is parallel to the water receiving bucket slide rail.

5. The novel sluice according to claim 4, wherein The water receiving bucket and the water receiving bucket slide rail are arranged below the water retaining plate. One side of the water receiving bucket is a plane, and the cross-section of the water receiving bucket is D-shaped.

6. The novel sluice according to claim 4 or 5, characterized in that It further includes an automatic electric control system, which includes a data processor, a first intermediate relay, a water level sensor group upstream of the sluice, a first limit switch, a second limit switch, and a third limit switch. The signal output ends of the first limit switch, the second limit switch, and the third limit switch are respectively connected to the first limit switch signal input end, the second limit switch signal input end, and the third limit switch signal input end of the data processor. The water gate opening signal output end of the data processor is connected to the coil of the first intermediate relay in series and then grounded. The normally closed contact of the first intermediate relay is connected between the power supply of the slide rail electromagnet and the slide rail electromagnet. When there is no signal output from the water gate opening signal output end of the data processor, when the slide rail electromagnet is powered on, the corresponding slide rail electromagnet attracts the corresponding slide rail. When the water gate opening signal output end of the data processor outputs a control signal, the coil of the first intermediate relay is powered on, the normally closed contact of the first intermediate relay is disconnected, the slide rail electromagnet is powered off, and the corresponding slide rail electromagnet releases the corresponding slide rail. The water receiving bucket drainage control signal output end of the data processor is connected to the control end of the water receiving bucket electric control drainage valve. When the water gate opening signal output end of the data processor outputs a signal, the water receiving bucket drainage control signal output end of the data processor outputs an electrical signal to the water receiving bucket electric control drainage valve, and the drainage weight of the water receiving bucket is reduced until the upward pulling force on the water retaining plate is reduced to the threshold value, and the water retaining plate slides down along the water retaining plate slide rail according to its own gravity and gradually covers the water passing hole. When there is no signal output from the water receiving bucket drainage control signal output end of the data processor, the water receiving bucket electric control drainage valve is powered off, and the water storage weight of the water receiving bucket increases until it reaches the weight threshold value, and the water retaining plate is pulled to move upward along the water retaining plate slide rail. The first limit switch is arranged on the main dam body beside the electromagnet, and the sensing component of the first limit switch faces the slide rail. When the slide rail is attracted by the slide rail electromagnet, the first limit switch is in an off state. When the slide rail leaves the main dam body and lifts upward away from the sensing component of the first limit switch, the signal output end of the first limit switch outputs a signal to the first limit switch signal input end of the data processor. The second limit switch and the third limit switch are both arranged on the slide rail: The second limit switch is located at the position of the slide rail directly opposite to the upper edge limit feedback interval of the water passing hole. The upper edge limit feedback interval is the interval from the upper edge of the water passing hole to 30 cm above the upper edge; The third limit switch is located at the position of the slide rail directly opposite to the lower edge limit feedback interval of the water passing hole. The lower edge limit feedback interval is the interval from the lower edge of the water passing hole to 30 cm below the lower edge; The sensing component of the second limit switch is lower than the lower edge of the water baffle when the water baffle rises to the in-place position. The sensing component of the third limit switch is directly opposite to the side of the lower end of the water baffle when the water baffle descends to the in-place position; The vertical distance between the horizontal lines where the second limit switch and the third limit switch are located is less than or equal to the height of the water baffle; When the water baffle rises to the in-place position, the sensing components of the second limit switch and the third limit switch are not blocked, and the second limit switch and the third limit switch are both in the off state and do not emit signals; When the water baffle descends to the in-place position, the sensing component of the second limit switch is directly opposite to the side of the upper end of the water baffle at this time, and the sensing component of the third limit switch is directly opposite to the side of the lower end of the water baffle at this time. The second limit switch and the third limit switch respectively send signals to the second and third limit switch signal input ends of the data processor; During the rising or falling process of the water baffle, the sensing component of the second limit switch is blocked by the water baffle, while the sensing component of the third limit switch is not blocked by the water baffle. The second limit switch outputs a signal to the second limit switch signal input end of the data processor, and the signal output end of the third limit switch does not emit a signal; The upstream water level sensor group of the sluice includes 2 upstream water level sensors: the first upstream water level sensor and the second upstream water level sensor. The installation heights of the upstream water level sensors are: the first upstream water level sensor < the second upstream water level sensor; The signal output ends of the first upstream water level sensor and the second upstream water level sensor are respectively connected to the first and second water level signal input ends of the data processor; The upstream water level sensor group of the sluice is arranged 1.5 meters upstream of the sluice; When the water level at the position of the water level sensor group is lower than the position where the first upstream water level sensor is located, all the water level sensors have no signals, and at this time it is in the "low" water level; When the water level at the position of the water level sensor group is higher than the position where the first upstream water level sensor is located but lower than the position where the second upstream water level sensor is located, only the first upstream water level sensor has a signal and the second upstream water level sensor has no signal, and at this time it is in the "medium" water level; When the water level at the position of the water level sensor group is higher than the position where the second upstream water level sensor is located, both the first and second upstream water level sensors have signals, and at this time it is in the "high" water level.

7. The novel sluice according to claim 6, characterized in that, It also includes a remote communication device, a remote host computer, and a field voice alarm. The remote host computer includes a mobile phone alarm signal output device and an intelligent voice broadcast speaker. The remote host computer is communicatively connected to the data processor through the remote communication device. The data input / output end of the remote communication device is connected to the remote data input / output end of the data processor. The remote data input / output end of the data processor includes a host computer command receiving interface, a host computer programming data transmission interface, a data processor collected data uploading interface, and a data processor alarm signal uploading interface. The field alarm signal output end of the data processor is connected to the field voice alarm.

8. The control method of the novel sluice according to claim 7, characterized in that , including the following steps: Step 1): The system performs a timed loop self-check. During a self-check process, the remote host computer sends a self-check signal to the data processor through the remote communication device. After the data processor passes the self-check, it uploads a normal self-check return signal through the remote communication device. If the remote host computer determines that both the remote communication device and the data processor are working properly, it proceeds to Step 2). If the remote host computer does not receive the self-check return signal from the remote communication device, it means that the remote communication device or the data processor has a fault. The remote host computer sends an alarm message "The remote communication device or the data processor has a fault" to the administrator's mobile phone through the mobile phone alarm signal output device. At the same time, the remote host computer circulates and plays the voice signal "The remote communication device or the data processor has a fault" through the intelligent voice broadcast speaker. Step 2): The data processor determines whether there is a signal input at its upstream first and second water level signal input ends: If the data processor determines that signals are received at both its upstream first and second water level signal input ends, it proceeds to Step 2-1). If the data processor determines that a signal is received at its upstream first signal input end but no signal is received at the upstream second water level signal input end, it proceeds to Step 2-2). If the data processor determines that no signals are input at both its upstream first and second water level signal input ends, it proceeds to Step 2-3). If the data processor determines that the signals at its upstream first and second water level signal input ends do not fall into the above three situations, the data processor uploads a signal: "There is a water level sensor fault" to the host computer through its remote data input / output end and reports a fault alarm signal to the host computer. Step 2-1): The data processor determines that the upstream of the current sluice is at a "high" water level. It uploads the aforementioned data collection signal: "Signals are received at both the upstream low water level signal input end and the upstream high water level signal input end" to the host computer through its remote data input / output end. At the same time, it uploads a "high" water level alarm signal for the upstream of the sluice to the host computer, and the voice alarm of the host computer broadcasts the voice signal "High water level warning". At the same time, the field alarm signal output end of the data processor outputs a drive signal to drive the field voice alarm to broadcast the voice signal "High water level warning for the upstream of the sluice". Then, it proceeds to Step 3). Step 2-2): The data processor determines that the upstream water level of the current sluice is at a "medium" water level. The data processor uploads the data collection signal: "A signal is received at the upstream low water level signal input end, but no signal is received at the upstream high water level signal input end" to the host computer through the remote data input / output end. It returns to Step 1). Step 2-3), the data processor determines that the upstream water level of the sluice is at a "low" level. The data processor uploads the data acquisition signal: "No signal input at both the upstream low water level signal input terminal and the upstream high water level signal input terminal" to the host computer through the remote data input / output terminal. At the same time, it uploads the "low" water level alarm signal of the upstream of the sluice to the voice alarm of the host computer to broadcast the voice signal of "low water level warning"; at the same time, the on-site alarm signal output terminal of the data processor outputs a drive signal to drive the on-site voice alarm to broadcast the voice signal of "low water level warning for the upstream of the sluice"; then, it enters Step 8); Step 3), the data processor detects whether there is a signal input to the first limit switch. If there is a signal input to the input terminal of the first limit switch, at this time, the slide rail is in a state of being closely attached to the main dam body. The water gate opening signal output terminal of the data processor outputs the "water gate opening" signal, and the drainage control signal output terminal of the water receiving bucket of the data processor outputs the "drainage valve closed" signal. The power supply control terminal of the slide rail electromagnet is powered off. Subsequently, the water flow thrust pushes the baffle to lift the water retaining plate and the slide rail, and the flood discharge plate slides upward along the slide rail of the water retaining plate; then, it enters Step 4); if there is no signal input to the first limit switch, it directly enters Step 4); Step 4), the data processor starts timing, that is, timing 1, and at the same time starts to detect whether there is a signal input to the input terminal of the first limit switch every 1 s: if there is a signal input to the input terminal of the first limit switch and it is still within the first timing period, continue timing and cycle detection every second; if there is a signal input to the first limit switch and the first timing period has ended, upload the signal: "Slide rail release timeout or first limit switch failure" to the host computer through the remote data input / output terminal, and report the fault alarm signal to the host computer; if there is no signal input to the first limit switch and timing 1 does not exceed the set time, upload the signal: "The water gate has been opened" to the host computer through the remote data input / output terminal, and then enter Step 5); Step 5), the data processor starts timing, that is, timing 2, and at the same time starts to detect whether there is a signal input to the third limit switch every 1 s and make a judgment: if there is a signal input to the third limit switch, at this time, the water retaining plate is in the state of being lowered in place, and timing 2 does not exceed the set time, continue timing and cycle detection every second; if there is a signal input to the third limit switch and timing 2 exceeds the set time, upload the signal: "Water retaining plate rising failure" to the host computer through the remote data input / output terminal, and report the fault alarm signal to the host computer; if there is no signal input to the third limit switch and timing 2 does not exceed the set time, upload the signal: "The water retaining plate is in the rising state" to the host computer through the remote data input / output terminal, and then enter Step 6); Step 6), the data processor starts timing, i.e., timing 3, and at the same time starts to detect whether there is a signal input from the second limit switch every 1 s and makes a judgment: if there is a signal input from the second limit switch and the timing 3 does not exceed the set time, continue timing and loop detection every second; if there is a signal input from the second limit switch and the timing 3 exceeds the set time, upload the signal: "The water baffle does not rise in place on time" to the host computer through the remote data input / output terminal, and report a fault alarm signal to the host computer; if there is no signal input from the second limit switch and the timing 3 does not exceed the set time, after uploading the signal: "The water baffle rises in place" to the host computer through the remote data input / output terminal, enter Step 7); Step 7), the data processor starts timing, i.e., timing 4, and at the same time starts to detect whether there is a signal input from the first limit switch every 1 s and makes a judgment: if there is no signal input from the first limit switch, at this time the slide rail is in an unclosed state, and the timing 4 does not exceed the set time, continue timing and loop detection every second; if there is a signal input from the first limit switch and the timing 4 exceeds the set time, upload the signal: "The slide rail does not reset on time" to the host computer through the remote data input / output terminal, and report a fault alarm signal to the host computer; if there is a signal input from the first limit switch and the timing 4 does not exceed the set time, after uploading the signal: "The floodgate is in a fully open state and has the condition to close" to the host computer, return to Step 1); Step 8), the data processor detects whether there is a signal input from the first limit signal input terminal. If there is a signal input from the first limit switch, at this time the slide rail is in a state of being closely attached to the main dam body, and the data processor outputs a "floodgate closed" signal and a "drain valve open" signal at the floodgate opening signal output terminal; "Floodgate closed" controls the power control terminal of the slide rail electromagnet to be energized and attracted, locking the slide rail on the main dam body; "Drain valve open" controls the drain valve of the water receiving bucket to open, and the water receiving bucket starts to release water when storing water until the weight reaches the threshold value. The water receiving bucket moves upward and pulls the water baffle to slide downward along the water baffle slide rail, gradually closing the water passing hole; then, enter Step 9); if there is no signal input from the first limit switch, at this time the slide rail is not in a state of being closely attached to the main dam body and cannot be closed, then upload the signal: "The floodgate is currently in an open state but not reset" to the host computer through the remote data input / output terminal, and then return to Step 1); Step 9), the data processor starts timing, i.e., timing 5, and at the same time starts to detect whether there is a signal input from the second limit switch every 1 s and makes a judgment: if there is no signal input from the second limit switch, at this time the water baffle is still in the state of rising in place, and the timing 5 does not exceed the set time, continue timing and loop detection every second; if there is no signal input from the second limit switch and the timing 5 exceeds the set time, upload the signal: "The water baffle does not start to descend on time" to the host computer through the remote data input / output terminal, and report a fault alarm signal to the host computer; if there is a signal input from the second limit switch and the timing 5 does not exceed the set time, after uploading the signal: "The water baffle starts to descend" to the host computer, enter Step 10); Step 10): The data processor starts timing, i.e., timing 6, and at the same time starts to detect whether there is a signal input from the third limit switch every 1 s and makes a judgment: If there is no signal input from the third limit switch and the timing 6 does not exceed the set time, continue timing and cycle the detection every second; If there is no signal input from the third limit switch and the timing 6 exceeds the set time, upload the signal: "The water baffle has not descended in place on time" to the host computer through the remote data input / output terminal, and report a fault alarm signal to the host computer; If there is a signal input from the second limit switch and the timing 6 does not exceed the set time, after uploading the signal: "The sluice has been closed" to the host computer through the remote data input / output terminal, return to Step 1).

9. The novel sluice according to claim 2, characterized in that , further comprising two sets of slide rail hinges and two sets of slide rail pressing devices; One slide rail hinge is arranged at the top of each of the two water baffle slide rails. The fixed part of the slide rail hinge is installed on the outer wall of the main dam body, and the rotating and moving part of the slide rail hinge is installed at the top of the water baffle slide rail. When the slide rail hinge is opened, the slide rail rotates around the slide rail hinge and lifts away from the main dam body. When the slide rail hinge is closed, the slide rail rotates vertically around the slide rail hinge and falls close to the main dam body; The two sets of slide rail pressing devices have the same structure and are symmetrically arranged. One set of slide rail pressing device includes: a pressing lever, a set of movable joint devices, a set of pressing electromagnets, and a spring tongue limiting device. The movable joint device includes a first and a second fixing mechanism arranged face to face and a movable joint arranged between the two fixing mechanisms. The first fixing mechanism is fixed on the pressing lever, and the second fixing mechanism is fixed on the slide rail; The axes of the two pressing levers are arranged horizontally; Taking the movable joint device as a reference point, the part of the pressing lever between the two slide rails is the inner side, and the part outside the two slide rails is the outer side of the pressing lever. The inner length of the pressing lever is longer than the outer length; In the pressing state, a set of pressing electromagnets is arranged at the corresponding position where the inner end head of the pressing lever is close to the main dam body. The inner end head of the pressing lever is made of a magnetic material; A spring tongue limiting device is arranged at the corresponding position where the outer end head of the pressing lever is close to the main dam body. The spring tongue limiting device includes a fixed lock body and a spring tongue. The fixed lock body is fixed on the main dam body, and the spring tongue is elastically installed on the fixed lock body. The telescopic direction of the spring tongue is parallel to the main dam body. The surface of the spring tongue facing the main dam body is a plane, and the other surface of the spring tongue facing away from the main dam body is an inclined plane that gradually inclines towards the main dam body from the fixed lock body to the distal end from top to bottom; In the pressing state, the outer end head of the pressing lever is restricted between the plane of the spring tongue and the main dam body, and the inner end head of the pressing lever is attracted tightly by the electromagnet; At this time, the pressing lever presses the slide rail on the main dam body; When the pressing electromagnet is powered off, the inner end head of the pressing lever is released, and the water baffle together with the slide rail rotates upward around the slide rail hinge under the water flow thrust, and the bottom of the water baffle and the slide rail moves away from the main dam body; The pressing lever together with the slide rail moves away from the main dam body accordingly. Then the spring tongue blocks the lifting of the outer end head of the pressing lever, and the pressing lever rotates around the movable joint device until it rotates through a sufficient angle and then the pressing lever slides off from under the spring tongue, and the pressing lever then enters a free state; When restoring from the released state to the clamped state, the clamping lever gradually approaches the main dam body driven by the slide rail. The outer end head of the clamping lever presses on the inclined surface of the spring lock tongue, pressing the spring lock tongue until it retracts into the fixed lock body. At the same time, the inner end head of the clamping lever approaches the clamping electromagnet. After the clamping electromagnet is powered on, the inner end head of the clamping lever tightly attracts to the clamping electromagnet.

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