Intelligent throttling regulation and control device and method for gate pump

Abstract

The invention relates to the technical field of gate pumps, in particular to a gate pump intelligent throttling regulation and control device and method.The regulation and control device comprises a switch cover hinged to the end of a gate pump, a flow direction detection device for detecting the flow direction of water flow in the gate pump is arranged in the gate pump, and the hinged position of the switch cover and the gate pump is called the hinged end of the switch cover; a clutch unit and a driving unit are arranged at the hinged end of the switch cover, the clutch unit has a connection state and a separation state, and the regulation and control device further comprises a controller used for controlling state switching of the clutch unit and operation of the driving unit. According to the device, the large impact force of water flow on the switch cover is avoided, the service life of the driving unit is prolonged, the operation stability of the driving unit is guaranteed, meanwhile, the flow direction of the water flow in the gate pump can be detected, and the situation that in the flood drainage process, external rivers flow backwards when passing through the failed gate pump is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of gate pumps, and in particular to an intelligent throttling control device and method for a gate pump. Background Art

[0002] A sluice pump is a type of sluice pump installed on a gate that has a two-way water transportation function. Installing the sluice pump directly on the gate is called an integrated sluice pump device, and separating the sluice pump and the gate is called a separate sluice pump device. The separate sluice pump device is prone to silt accumulation in the river during use. When drainage is required, the water hole on the gate cannot be normally coupled with the sluice pump, which ultimately makes the separate sluice pump device difficult to use for flood control.

[0003] For example, Chinese utility model patent CN220888545U discloses a separate gate pump device with a silt clearing function. This technical solution uses the water flowing out from the gap between the water hole and the coupling piece to flush the silt and dirt on the bottom of the river, thereby ensuring the normal coupling between the water hole on the gate and the gate pump. However, during normal use, the gate pump will experience power instability or damage as the frequency of use increases. If the gate pump is in a drainage state at this time, there will be a difference in water level height on both sides of the gate pump, that is, the gate pump will discharge water in the city to the outside river, and the water flow in the outside river is higher than the water level in the city. If the gate pump fails at this time, backflow will occur at the gate pump, which will affect the efficiency of drainage.

[0004] In the invention patent of the pump gate system with small hydroelectric power generation function disclosed in Korean patent KR20150126535A, a pump gate system is disclosed which utilizes the flowing water in the inflow channel to generate small hydroelectric power when the pump gate is opened, and controls the adjustable gate according to the water discharge amount to adjust the power generation amount. It comprises: a pump gate: a water discharge pump is installed, and the opening and closing is realized by a lifting driving mechanism, so that the water flow can be discharged to the rear water channel; an adjustable gate: provided behind the pump gate, used to adjust the discharge flow rate; a power generation device: a water turbine is installed inside the power generation water channel formed behind the adjustable gate to generate electricity; a control unit: adjusts the adjustable gate according to the water discharge amount of the pump gate and the water pump operation state. The structure cannot be well used for long-term use in complex hydrological environment, such as the gate pump itself needs to have the function of detecting the actual water flow direction, and the gate pump is closed when backflow occurs through the switch cover. However, the existing gate pump does not have the function of monitoring the flow direction of the water transported by itself. Even if the gate pump can monitor the actual water flow direction of the water transported by itself, when the water flow is found to be backflow, the switch cover is closed, so the stability of the driving device of the switch cover is required. However, the switch cover needs to be opened before the gate pump is started, and in order to avoid the phenomenon of backflow of external water flow due to higher water level, the gate pump also needs to be in running state during the opening process of the switch cover. The opening and closing of the switch cover is driven by a separate driving device. The water flow will impact the switch cover in the opening process, which will damage the driving device and reduce the service life of the driving device. Moreover, the stability of the damaged driving device is poor. SUMMARY

[0005] I. Technical problems to be solved The present application is directed to the above-mentioned defects in the prior art, and proposes a gate pump intelligent throttling control device and method to solve the problem of low service life and low reliability of the existing gate pump in complex environment.

[0006] II. Technical solutions To solve the above technical problems, the present application provides a gate pump intelligent throttling control device, which is arranged on the gate pump; the control device comprises a switch cover hinged at the end of the gate pump, a flow direction detection device is arranged in the gate pump to detect the water flow direction in the gate pump, the hinge of the switch cover and the gate pump is called the hinge end of the switch cover, a clutch unit and a driving unit are arranged at the hinge end of the switch cover, the clutch unit has a connected state and a separated state, when the clutch unit is in the connected state, the driving unit drives the switch cover to rotate through the clutch unit, when the clutch unit is in the separated state, the switch cover rotates freely around its hinge end, and the control device further comprises a controller for controlling the state switching of the clutch unit and the operation of the driving unit.

[0007] First, based on the above-mentioned main structure, the energy self-supply unit includes a micro hydroelectric generator and a battery. The hinged end of the switch cover is located on the lower side of the gate pump, which minimizes the interference of underwater working conditions on the opening and closing of the switch cover. The micro hydroelectric generator converts the impact of the water flow into electrical energy and stores it in the battery, realizing the self-circulation of the device energy, solving the risk of power outages during flood season, and improving the emergency reliability of the system.

[0008] In combination with the first aspect, the flow direction detection device includes a sliding groove opened on the inner wall of the gate pump along the axial direction of the gate pump, and a detection plate is slidably arranged in the sliding groove along the extension direction of the sliding groove. The detection plate extends into the gate pump along the radial direction of the gate pump, and a trigger button is provided at the end of the sliding groove. When the water flow in the gate pump flows back, the detection plate will trigger the trigger button, and through the flow direction detection device, it is possible to take advance measures when the backflow of water in the gate pump is detected.

[0009] In more detail, the detection plate has a V-shaped structure. When the gate pump is operating normally, the protruding part of the detection plate faces the water inflow end of the gate pump, and the recessed part of the detection plate faces the water outflow end of the gate pump. At the same time, the protruding part and the recessed part of the detection plate are embedded with micro pressure sensors for monitoring the positive / reverse water pressure difference. The synergistic effect of the dual modes improves the overall reliability.

[0010] Regarding the flow direction detection device, slots are opened at both ends of the sliding groove along the extension direction of the sliding groove, and plug plates that slide with the slots are fixed on both sides of the detection plate. The plug plates are used to close the sliding groove and prevent water erosion by partially blocking it.

[0011] Secondly, regarding the clutch unit, the clutch unit includes a rotating disk fixedly set on the hinged end of the switch cover, and a telescopic block is provided on the rotating disk for movement along the radial direction of the rotating disk. The driving unit includes clamping blocks evenly arranged around the rotating disk. When the telescopic block is extended, it is engaged with the clamping block. The main function of the clutch unit is to connect and cut off the power transmission.

[0012] Regarding how to achieve the clutch effect, a telescopic slot for the telescopic block to slide is opened on the rotating disk along the radial direction of the rotating disk, and a receiving slot is opened in the center of the rotating disk along the axis of the rotating disk. A telescopic rod is fixed at the end of the telescopic block, and the telescopic rod extends from the telescopic slot into the receiving slot and moves synchronously with the telescopic block. A spring is sleeved on the outside of the telescopic rod, and its two ends are respectively fixedly connected to the telescopic block and the bottom of the telescopic slot. A rotating block with a polygonal cross-section is rotatably arranged in the receiving slot, and a rotating drive device for driving the rotating block to rotate is provided at the end of the rotating disk. The rotating drive device is generally driven by a motor.

[0013] Further, an arc-shaped groove is formed in the bottom of the accommodating groove around the axis of the rotating disc, a limiting column extending into the arc-shaped groove and slidingly fitted with the arc-shaped groove is fixedly arranged on the rotating block, when the limiting column is located at one end of the arc-shaped groove, the telescopic groove is in the extended state, when the limiting column is located at the other end of the arc-shaped groove, the telescopic groove is located in the rotating disc, and the mechanical structure design is more suitable for the underwater working system of the gate pump.

[0014] The present application also relates to a gate pump intelligent throttling regulation method, which adopts a gate pump intelligent throttling regulation device, and the specific steps are as follows: S1, when draining water, the gate pump starts to start, and after reaching the preset time, the driving unit drives the switch cover to rotate by the clutch unit in the connected state; S2, the clutch unit is provided with a delay start time, when the gate pump is opened to reach the preset time and the clutch unit reaches the delay start time, the switch cover is opened, the clutch unit is switched from the connected state to the separated state, the gate pump pushes the switch cover to rotate by the water flow, and after the switch cover is completely opened, the switch cover no longer rotates; S3, in the process of running of the gate pump, the flow direction detection device detects the flow direction of the water flow in the gate pump, when the water flow in the gate pump is detected to appear the reverse flow phenomenon, the clutch unit is switched to the connected state, and the driving unit drives the switch cover to close by the clutch unit.

[0015] III. Beneficial effects Compared with the prior art, the flow direction detection device for detecting the flow direction of the water flow in the gate pump is arranged on the gate pump, and the clutch unit is arranged between the switch cover and the driving unit, when it is needed to drain the water flow in the city water system, the gate pump starts to start first, when the gate pump runs to the preset time, the clutch unit is switched to the separated state in a delay manner, the switch cover is opened by a certain angle by the driving unit through the clutch unit, then the clutch unit is switched to the separated state, the switch cover is flushed open by the water flow, since the power of the gate pump is still in the rising state at this time, and the switch cover is located in the water, the resistance of the switch cover during rotation is large, and the impact force of the water flow on the switch cover is limited, so that the switch cover is avoided from being impacted by the large impact force of the water flow, the service life of the driving unit is prolonged, the operation stability of the driving unit is ensured, and the flow direction of the water flow in the gate pump can be detected, so that the reverse flow of the external river through the faulty gate pump during the process of draining water is avoided.

[0016] Furthermore, by arranging the hinged end of the switch cover on the lower side of the gate pump, when the gate pump is started, the clutch unit switches from the connected state to the separated state, and the gate pump discharges the water in the city to the external river. The water flow discharged from the gate pump pushes the switch cover to rotate, so that the switch cover is opened, and the opened switch cover will not close again at the end of the gate pump due to its own weight, ensuring that the freely open switch cover will not form an obstruction to the end of the gate pump during the drainage process of the gate pump, thereby ensuring the drainage efficiency of the gate pump per unit time.

[0017] The detection plate is also set to a V-shaped structure, and the protruding part of the detection plate faces the water flow. Compared with the detection plate with a flat structure, the detection plate with a V-shaped structure is subject to less impact force. When backflow occurs in the gate pump, the concave part of the detection plate faces the water flow, and the backflowing water can more easily push the detection plate, which not only avoids the detection plate from being subjected to a large impact during the normal operation of the gate pump, but also ensures that when the water flow in the gate pump flows back, the V-shaped detection plate reduces the impact of the forward water flow and enhances the sensitivity of backflow detection, thereby doubly protecting the gate pump system. Energy recovery is also achieved by setting up a micro-hydroelectric generator, and the water flow impulse is used to generate electricity to supply the entire control system. As a safety redundancy measure, it solves the risk of power outages during flood season. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional schematic diagram of the switch cover of the present invention when it is in a closed state.

[0019] Figure 2 This is a three-dimensional diagram of the switch cover of the present invention after it is opened. Figure 1 .

[0020] Figure 3 It is a cutaway perspective schematic diagram of the switch cover of the present invention after it is opened.

[0021] Figure 4 This invention Figure 3 A local enlarged schematic diagram of point A in the middle.

[0022] Figure 5 This invention Figure 3 A partial enlarged schematic diagram of point B in the middle.

[0023] Figure 6 This is a three-dimensional diagram of the switch cover of the present invention after it is opened. Figure 2 .

[0024] Figure 7 It is a three-dimensional schematic diagram of an intelligent throttling control device for a gate pump of the present invention with the housing of the drive unit removed.

[0025] Figure 8 This invention Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0026] Figure 9 It is a three-dimensional schematic diagram of the combination of the clutch unit and the drive unit of the present invention.

[0027] Figure 10 This is a schematic diagram of a cutaway perspective view of the clutch unit and drive unit combination of the present invention. Figure 1 .

[0028] Figure 11 This is a schematic diagram of a cutaway perspective view of the clutch unit and drive unit combination of the present invention. Figure 2 .

[0029] In the picture: 1 is the gate pump; 11 is the switch cover; 2 is a flow direction detection device; 21 is a trigger button; 22 is a sliding slot; 23 is a detection plate; 24 is a slot; 25 is an insert plate; 3 is a clutch unit; 31 is a rotating disk; 32 is a telescopic block; 33 is a receiving slot; 34 is a telescopic slot; 35 is a telescopic rod; 36 is a spring; 37 is a rotating block; 371 is a limiting column; 372 is an arc slot; 38 is a rotary drive device; 4 is a driving unit; 41 is a clamping block; 42 is an annular magnetic driver; 43 is a driving ring; 44 is a brake plate; and 45 is a brake ring. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention. Example

[0031] like Figure 1-Figure 3 、 Figure 6 and Figure 7 As shown, the intelligent throttling control device of the gate pump of this embodiment is arranged on the gate pump 1; the control device includes a switch cover 11 hinged at the end of the gate pump 1, and a flow direction detection device 2 for detecting the flow direction of water inside the gate pump 1 is arranged in the gate pump 1. The hinged joint between the switch cover 11 and the gate pump 1 is called the hinged end of the switch cover 11, and a clutch unit 3 and a drive unit 4 are arranged at the hinged end of the switch cover 11. The clutch unit 3 has a connected state and a separated state. When the clutch unit 3 is in the connected state, the drive unit 4 drives the switch cover 11 to rotate through the clutch unit 3. When the clutch unit 3 is in the separated state, the switch cover 11 rotates freely around its own hinged end. The control device also includes a controller for controlling the state switching of the clutch unit 3 and the operation of the drive unit 4. The operating time of each unit can be preset by the controller. During the drainage process, before the gate pump 1 is operated, the clutch unit 3 switches to the separated state; when the flow direction detection device 2 detects that the external water flow flows into the city in reverse, the clutch unit 3 switches to the connected state.

[0032] The existing sluice pump 1 is mainly used in water conservancy management and drainage work. When performing drainage operations, the sluice pump 1 is usually set on the gate, which isolates the city's internal water system from the external river. When the sluice pump 1 is not running, the water levels on both sides of the gate are the same. In some cities, the water level of the external river is higher than the water level of the urban water system. Therefore, the end of the existing sluice pump 1 is provided with a switch cover 11. The switch cover 11 is always closed at the end of the sluice pump 1 when the sluice pump 1 is not running. When the sluice pump 1 is running, the switch cover 11 is opened. The existing sluice pump can generally also be used through the pump body (not shown) to forcibly drain water from the city's inner river to the outer river, or to forcibly draw water from the outer river to the city's inner river, in order to maintain the water level of the city's inner river. In this embodiment, the switch cover 11 is usually directly driven by the drive unit 4, and a sealing end cover is further provided on the outside of the drive unit 4. Generally, there are many driving modes for the drive unit 4, such as magnetic drive, motor drive, hydraulic drive, etc. However, no matter which driving mode is used, when the drive unit 4 rotates to open or close the switch cover 11, the rotation speed of the switch cover 11 cannot completely match the flow rate of the water flowing in the gate pump 1, that is, when performing drainage operations, in order to avoid the backflow of water in the external river because the water level is higher than the water level of the urban water system, when the switch cover 11 is opened, the switch cover 11 is opened. The front gate pump 1 needs to start. After the switch cover 11 is opened, the water in the urban water system flows to the external river under the action of the gate pump 1. However, the speed at which the drive unit 4 drives the switch cover 11 to rotate cannot be consistent with the flow rate of the water in the gate pump 1. The flowing water will impact the switch cover 11. The thrust of the water flow acts on the drive unit 4 through the switch cover 11, causing the drive unit 4 to be easily damaged. When the switch cover 11 needs to be driven closed by the drive unit 4 later, the faulty drive unit 4 cannot smoothly drive the switch cover 11 closed. At the same time, the existing gate pump 1 basically does not have the function of detecting the flow direction of the water flowing through it. If the gate pump 1 is reduced in power due to a fault, the external river water will flow back into the urban water system through the gate pump 1. Even if a flow direction detection device 2 is added to one side of the existing gate pump 1, the switch cover 11 cannot be closed due to a fault in the drive unit 4.

[0033] In order to avoid the above situation, an intelligent throttling control device for the gate pump 1 is designed to detect the flow direction of the water in the gate pump 1 in the running state. At the same time, it is judged whether backflow occurs according to the detected water flow direction, so that the drive unit 4 can close the switch cover 11 in time. At the same time, a clutch unit 3 is added between the drive unit 4 and the switch cover 11 to avoid the switch cover 11 from directly generating a reaction force on the drive unit 4 when it is impacted by the water flow, thereby extending the service life of the drive unit 4. The specific structure and working process of the present invention are as follows: Before the gate pump 1 is started, the clutch unit 3 is in a connected state. When drainage is required, the gate pump 1 starts. Since the power of the gate pump 1 does not reach the maximum value directly after starting, but will gradually increase, the state switching time of the clutch unit 3 can be preset in actual use. When the starting time of the gate pump 1 reaches the preset time, the clutch unit 3 switches from the connected state to the separated state, and the water flow in the gate pump 1 flushes the switch cover 11. Since the clutch unit 3 is in a separated state, the switch cover 11 and the drive unit 4 are in a non-connected state, ensuring that when the water flow impacts the switch cover 11, the drive unit 4 will not be affected by the reaction force, thereby extending the service life of the drive unit 4. It is worth noting that in some cities, the water level in the external river is higher than the water level of the urban water system, and the switch cover 11 is set on the side of the gate pump 1 facing the external river, resulting in the switch cover 11 being pressed on the end of the gate pump 1 due to the water pressure of the external river. The gate pump 1 needs to generate a large thrust to push the switch cover 11 open, which in turn causes the hinge between the switch cover 11 and the gate pump 1 to be prone to cracks or breakage. In order to reduce the impact of water flow on the switch cover 11, when the switching time of the clutch unit 3 is preset, the clutch unit 3 also needs to be set with a delayed start. At the same time, the drive unit 4 drives the switch cover 11 to rotate through the clutch unit 3, so that after the gate pump 1 runs to the preset time, the clutch unit 3 is still in the connected state. After the drive unit 4 drives the switch cover 11 to open a certain angle through the clutch unit 3, the clutch unit 3 reaches the delay time, and the clutch unit 3 switches from the connected state to the separated state, reducing the impact of the water flow in the gate pump 1 on the switch cover 11 and preventing it from occurring. The delay time of the clutch unit 3 is generally 0.5-1 second, which can shorten the time that the driving unit 4 is subjected to the reaction force when driving the switch cover 11 to rotate, thereby extending the service life of the driving unit 4.

[0034] Compared with the traditional direct connection between the drive unit 4 and the switch cover 11, the indirect connection through the clutch unit 3 ensures that the switch cover 11 will not directly act on the drive unit 4 when impacted by the water flow, thereby extending the service life of the drive unit 4 and ensuring the operation stability of the drive unit 4. When the flow direction detection device 2 detects that the water flow in the gate pump 1 is backflowing, the clutch unit 3 switches from the separated state to the connected state. At the same time, the drive unit 4 drives the switch cover to rotate through the clutch unit 3, so that the switch cover is closed on the end of the gate pump 1.

[0035] By arranging a flow direction detection device 2 on the gate pump 1 to detect the flow direction of the water flow inside the gate pump 1, and arranging a clutch unit 3 between the switch cover 11 and the drive unit 4, when it is necessary to discharge the water flow in the urban water system, the gate pump 1 is started first. When the gate pump 1 runs to a preset time, the clutch unit 3 delays the switching state, and the drive unit 4 drives the switch cover 11 to rotate through the clutch unit 3, so that the switch cover 11 opens a certain angle, and then the clutch unit 3 switches to the separation state, and the gate pump 1 flushes the switch cover 11 open with the water flow. Since the power of the gate pump 1 is still in an increasing state at this time, and the switch cover 11 is in the water, the switch cover 11 encounters greater resistance when rotating, and the impact force of the water flow on the switch cover 11 is limited, which not only avoids the switch cover 11 from being subjected to a large impact force of the water flow, but also extends the service life of the drive unit 4, ensures the operating stability of the drive unit 4, and at the same time can detect the flow direction of the water flow in the gate pump 1, avoiding the situation where the external river flows back through the faulty gate pump 1 during the drainage process.

[0036] like Figure 1 and Figure 2 As shown, the hinged end of the switch cover 11 is located on the lower side of the gate pump 1. The end of the switch cover 11 away from the gate pump 1 is called the rotating end. When the switch cover 11 is closed, the rotating end of the switch cover 11 rotates around the hinged end of the switch cover 11, and the rotating end of the switch cover 11 gradually rises in the vertical direction, that is, when the switch cover is closed, it rotates upward to open, which can avoid closing due to its own weight. The hinged end of the switch cover 11 is set on the lower side of the gate pump 1, so that when the gate pump 1 is started, the clutch unit 3 switches from the connected state to the separated state, and the gate pump 1 discharges the water in the city to the external river. The water discharged from the gate pump 1 pushes the switch cover 11 to rotate, so that the switch cover 11 is opened, and the switch cover 11 after opening will not close again at the end of the gate pump 1 due to its own weight. This ensures that the freely opened switch cover 11 will not hinder the end of the gate pump 1 during the drainage process of the gate pump 1, thereby ensuring the drainage efficiency of the gate pump 1 per unit time.

[0037] like Figure 4 As shown, the flow direction detection device 2 includes a sliding groove 22 opened on the inner wall of the gate pump 1 along the axial direction of the gate pump 1, and a detection plate 23 is slidably arranged in the sliding groove 22 along the extension direction of the sliding groove 22. The detection plate 23 extends into the gate pump 1 along the radial direction of the gate pump 1, and a trigger button 21 is provided at the end of the sliding groove 22. When the water flow in the gate pump 1 flows back, the detection plate 23 triggers the trigger button 21.

[0038] When the gate pump 1 is in normal operation, the water flowing in the gate pump 1 generates thrust on the detection plate 23, and the detection plate 23 located in the sliding groove 22 moves toward the end of the sliding groove 22 where the trigger button 21 is not provided. When backflow occurs inside the gate pump 1, the backflowing water pushes the detection plate 23 toward the trigger button 21. After the detection plate 23 presses the trigger button 21, the controller controls the corresponding signal to drive the unit 4 to operate, and at the same time, the clutch unit 3 prepares to switch states according to the preset time.

[0039] like Figure 4 As shown, the detection plate 23 has a V-shaped structure. When the gate pump 1 is operating normally, the protruding portion of the detection plate 23 faces the water inflow end of the gate pump 1, and the concave portion of the detection plate 23 faces the water outflow end of the gate pump 1. When the gate pump 1 is operating normally, the water flowing in the gate pump 1 continues to impact the detection plate 23 after the detection plate 23 reaches one end of the sliding groove 22. Therefore, the detection plate 23 is configured as a V-shaped structure, and the protruding portion of the detection plate 23 faces the water flow. Compared with the detection plate 23 with a flat structure, the detection plate 23 with a V-shaped structure is subjected to less impact force. When backflow occurs in the gate pump 1, the concave portion of the detection plate 23 faces the water flow, and the backflowing water can more easily push the detection plate 23. This not only prevents the detection plate 23 from being subjected to a large impact during the normal operation of the gate pump 1, but also ensures that the detection plate 23 can be quickly pushed when the water flow in the gate pump 1 backflows.

[0040] like Figure 5 As shown, slots 24 are respectively provided at both ends of the sliding groove 22 along the extending direction of the sliding groove 22. Insert plates 25 are fixedly provided on both sides of the detection plate 23 to slideably engage with the slots 24. The insert plates 25 shield the sliding groove 22. During normal operation of the gate pump 1, the water flow velocity within the gate pump 1 is relatively high. When the water flow pushes the detection plate 23 to one end of the sliding groove 22, the water flow is likely to form an eddy current within the sliding groove 22 at the front end of the detection plate 23. The trigger button 21 is easily affected by the eddy current and thus eroded by the water flow. However, after the slots 24 and the insert plates 25 are provided, the detection plate 23 is ensured to slide stably and the erosion of the trigger button 21 by the water flow is avoided.

[0041] Furthermore, a pressure sensor is also provided on the detection plate 23 for detecting the detection plate 23. Miniature pressure sensors are embedded in the protrusions and recesses for monitoring the positive / reverse water pressure difference. Through the physical monitoring of the detection plate 23 and the assistance of the sensor, the mechanical trigger button 21 cooperates with the electronic trigger alarm of the pressure sensor. When the pressure difference is higher than the preset threshold, an automatic alarm is triggered to improve the reliability of backflow detection.

[0042] like Figures 8-11As shown, the clutch unit 3 includes a rotating disk 31 fixedly arranged on the hinged end of the switch cover 11, and a telescopic block 32 is provided on the rotating disk 31 for movement in the radial direction of the rotating disk 31. The driving unit 4 includes a clamping block 41 evenly arranged around the rotating disk 31. When the telescopic block 32 is extended, it is clamped with the clamping block 41.

[0043] The driving unit 4 includes a driving ring 43 that is rotatably sleeved on the outer periphery of the rotating disk 31 around the axis of the rotating disk 31, and the clamping blocks 41 are fixedly arranged on the inner ring side wall of the driving ring 43. An annular magnetic driver 42 is sleeved on the outer periphery of the driving ring 43. The annular magnetic driver 42 is used to drive the driving ring 43. When the telescopic block 32 extends from the rotating disk 31, the clutch unit 3 is in a connected state. At this time, when the annular magnetic driver 42 drives the driving ring 43 to rotate, the driving ring 43 drives the telescopic block 32 to rotate through the clamping blocks 41, thereby causing the rotating disk 31 to rotate. Since the rotating disk 31 is fixedly connected to the switch cover 11, when the rotating disk 31 rotates, the switch cover 11 also starts to rotate. A brake ring 45 is coaxially fixed at one end of the drive ring 43, and a brake plate 44 is provided on the outer periphery of the brake ring 45 so as to move along the radial direction of the brake ring 45. The brake plate 44 is driven by hydraulic control. When the switch cover 11 is closed at the end of the gate pump 1, the brake plate 44 contacts the outer periphery of the brake ring 45. The brake plate 44 brakes the brake ring 45, ensuring that the switch cover 11 can be stably closed at the end of the gate pump 1, and locking the brake ring 45 when the switch cover is closed.

[0044] like Figures 9-11 As shown, a telescopic groove 34 for the telescopic block 32 to slide is provided on the rotating disk 31 along the radial direction of the rotating disk 31, and a receiving groove 33 is provided in the center of the rotating disk 31 along the axis of the rotating disk 31. A telescopic rod 35 is fixedly provided at the end of the telescopic block 32. The telescopic rod 35 extends from the telescopic groove 34 to the receiving groove 33 and moves synchronously with the telescopic block 32. A spring 36 with two ends fixedly connected to the telescopic block 32 and the bottom of the telescopic groove 34 respectively is provided on the outside of the telescopic rod 35. A rotating block 37 with a polygonal cross-section is rotatably provided in the receiving groove 33.

[0045] When the rotating block 37 rotates, it can push the end of the telescopic rod 35 located in the accommodating groove 33. The pushed telescopic rod 35 drives the telescopic block 32 to extend from the telescopic groove 34. The spring 36 between the bottom of the telescopic groove 34 and the telescopic block 32 is stretched. At this time, the clutch unit 3 is in a connected state. As the rotating block 37 rotates, the rotating block 37 no longer pushes the end of the telescopic rod 35, and the spring 36 drives the telescopic block 32 to recover.

[0046] like Figures 9-11As shown, an arc-shaped groove 372 is provided at the bottom of the receiving groove 33 around the axis of the rotating disk 31. A limiting post 371 is fixedly provided on the rotating block 37, extending into the arc-shaped groove 372 and slidingly engaging with the arc-shaped groove 372. When the limiting post 371 is located at one end of the arc-shaped groove 372, the telescopic groove 34 is extended. When the limiting post 371 is located at the other end of the arc-shaped groove 372, the telescopic groove 34 is located inside the rotating disk 31. The limiting post 371 and the arc-shaped groove 372 are used to determine the rotation angle of the rotating block 37, thereby ensuring that the telescopic block 32 can be completely ejected or completely retracted into the telescopic groove 34 after the rotating block 37 stops rotating. Figure 8 As shown, a rotation driving device 38 for driving the rotation block 37 to rotate is provided at the end of the rotating disk 31. The rotation driving device can adopt a motor control drive combined with manual control drive.

[0047] In this embodiment, the intelligent throttling control device of the gate pump also includes an energy self-supply unit, which realizes energy recovery and power supply through the energy self-supply unit. Energy recovery is realized by setting up a micro-hydroelectric generator, and the water flow impulse is used to generate electricity to supply the entire control system. As a safety redundancy measure, it solves the risk of power outages during the flood season. The micro-hydroelectric generator is installed in the high-speed water flow area on the inner wall of the gate pump, and its output end is connected to the battery, which supplies power to the controller and the rotary drive device. Example

[0048] The present invention also relates to a gate pump intelligent throttling control method, which is implemented using the above-mentioned gate pump intelligent throttling control device, and the specific steps are as follows: S1. During drainage, the gate pump 1 starts and after a preset time, the drive unit 4 drives the switch cover 11 to rotate via the clutch unit 3 in the connected state; S2, the clutch unit 3 is set with a delayed start time. After the gate pump 1 is turned on for a preset time and the clutch unit 3 reaches the delayed start time, the switch cover 11 is opened, the clutch unit 3 switches from the connected state to the disconnected state, and the gate pump 1 pushes the switch cover 11 to rotate through the water flow. After the switch cover 11 is fully opened, the switch cover 11 no longer rotates; S3. During the operation of the gate pump 1, the flow direction detection device 2 detects the flow direction of the water in the gate pump 1. When backflow of the water in the gate pump 1 is detected, the clutch unit 3 switches to the connection state, and the drive unit 4 drives the switch cover 11 to close through the clutch unit 3.

[0049] Working principle: Before the gate pump 1 is started, the clutch unit 3 is in a connected state. When drainage is required, the gate pump 1 starts. Since the power of the gate pump 1 does not reach the maximum value directly after starting, but will gradually increase, the state switching time of the clutch unit 3 can be preset in actual use. When the starting time of the gate pump 1 reaches the preset time, the clutch unit 3 switches from the connected state to the separated state, and the water flow generated in the gate pump 1 flushes the switch cover 11. Since the clutch unit 3 is in a separated state, the switch cover 11 and the drive unit 4 are in a non-connected state, ensuring that when the water flow impacts the switch cover 11, the drive unit 4 will not be affected by the reaction force, thereby extending the service life of the drive unit 4.

[0050] It is worth noting that in some cities, the water level in the external river is higher than the water level of the urban water system, and the switch cover 11 is set on the end of the gate pump 1 facing the external river, resulting in the switch cover 11 being pressed on the end of the gate pump 1 due to the water pressure of the external river. The gate pump 1 needs to generate a large thrust to push the switch cover 11 open, which in turn causes the hinge between the switch cover 11 and the gate pump 1 to be prone to cracks or damage. In order to reduce the impact of the water flow on the switch cover 11, when the switching time of the clutch unit 3 is preset, the clutch unit 3 also needs to be set with a delayed start. At the same time, the drive unit 4 drives the switch cover 11 to rotate through the clutch unit 3, so that after the gate pump 1 runs for the preset time, the clutch unit 3 is still in the connected state. After the drive unit 4 drives the switch cover 11 to open a certain angle through the clutch unit 3, the clutch unit 3 reaches the delay time, and the clutch unit 3 switches from the connected state to the separated state, reducing the impact of the water flow in the gate pump 1 on the switch cover 11. The delay time of the clutch unit 3 is generally 0.5-1 second, which can shorten the time that the drive unit 4 is subjected to the reaction force when driving the switch cover 11 to rotate, thereby extending the service life of the drive unit 4. Compared with the traditional method of directly connecting the drive unit 4 and the switch cover 11, the indirect connection through the clutch unit 3 ensures that the switch cover 11 will not directly act on the drive unit 4 when impacted by the water flow, thereby extending the service life of the drive unit 4 and ensuring the operation stability of the drive unit 4. When the flow direction detection device 2 detects that the water flow in the gate pump 1 is backflowing, the clutch unit 3 switches from the separated state to the connected state. At the same time, the drive unit 4 drives the switch cover to rotate through the clutch unit 3, so that the switch cover is closed on the end of the gate pump 1.

[0051] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A gate pump intelligent throttling control device, characterized in that: The gate pump intelligent throttling control device is arranged on the gate pump (1); the gate pump intelligent throttling control device comprises a switch cover (11) hinged to the end of the gate pump (1); a flow direction detection device (2) is arranged inside the gate pump (1) for detecting the flow direction of water inside the gate pump (1); A clutch unit (3) and a drive unit (4) are provided at the hinged end between the switch cover (11) and the gate pump (1). The clutch unit (3) has a connected state and a disconnected state. When the clutch unit (3) is in the connected state, the drive unit (4) drives the switch cover (11) to rotate via the clutch unit (3). When the clutch unit (3) is in the disconnected state, the switch cover (11) rotates freely around its own hinged end. The control device further includes a controller for controlling the state switching of the clutch unit (3) and the operation of the drive unit (4).

2. The intelligent throttling control device for a gate pump according to claim 1, characterized in that: The gate pump intelligent throttling control device also includes an energy self-supply unit, which realizes energy recovery and power supply through the energy self-supply unit; The energy self-supply unit comprises a micro hydroelectric generator and a storage battery, and the hinged end of the switch cover (11) is located on the lower side of the gate pump (1).

3. The intelligent throttling control device for a gate pump according to claim 1, characterized in that: The flow direction detection device (2) includes a sliding groove (22) provided on the inner wall of the gate pump (1) along the axial direction of the gate pump (1), a detection plate (23) is provided in the sliding groove (22) and is slidably provided along the extension direction of the sliding groove (22), the detection plate (23) extends into the gate pump (1) along the radial direction of the gate pump (1), and a trigger button (21) is provided at the end of the sliding groove (22). When the water in the gate pump (1) flows backward, the detection plate (23) triggers the trigger button (21).

4. The intelligent throttling control device for a gate pump according to claim 3, characterized in that: The detection plate (23) has a V-shaped structure. When the gate pump (1) operates normally, the protruding portion of the detection plate (23) faces the water inflow end of the gate pump (1), and the recessed portion of the detection plate (23) faces the water outflow end of the gate pump (1). The protruding portion and the recessed portion of the detection plate (23) are embedded with a micro pressure sensor for monitoring the positive / reverse water pressure difference.

5. The intelligent throttling control device for a gate pump according to claim 3, characterized in that: Slots (24) are respectively provided at both ends of the sliding groove (22) along the extending direction of the sliding groove (22), and plug plates (25) that slide in cooperation with the slots (24) are respectively fixedly provided on both sides of the detection plate (23), and the plug plates (25) are used to close the sliding groove (22).

6. The intelligent throttling control device for a gate pump according to claim 1, characterized in that: The clutch unit (3) includes a rotating disk (31) fixedly arranged on the hinged end of the switch cover (11), a telescopic block (32) is arranged on the rotating disk (31) and moves in the radial direction of the rotating disk (31), and the drive unit (4) includes a clamping block (41) evenly arranged around the rotating disk (31), a drive ring (43) and an annular magnetic drive (42), the clamping block (41) is fixed to the inner wall of the drive ring, and the telescopic block (32) is clamped with the clamping block (41) when it is extended; The drive unit (3) further comprises a brake ring (45) coaxially arranged with the drive ring (43), and a brake plate (44) is arranged on the outer periphery of the brake ring (45) so as to move along the radial direction of the brake ring (45), and the brake plate (44) is used to lock the switch cover in a closed state.

7. The intelligent throttling control device for a gate pump according to claim 6, characterized in that: A telescopic groove (34) for sliding the telescopic block (32) is provided on the rotating disk (31) along the radial direction of the rotating disk (31), and a receiving groove (33) is provided at the center of the rotating disk (31) along the axis of the rotating disk (31). A telescopic rod (35) is fixedly provided at the end of the telescopic block (32). The telescopic rod (35) extends from the telescopic groove (34) into the receiving groove (33) and moves synchronously with the telescopic block (32). A spring (36) is sleeved on the outside of the telescopic rod (35), with both ends respectively fixedly connected to the telescopic block (32) and the bottom of the telescopic groove (34). A rotating block (37) having a polygonal cross-section is rotatably provided in the receiving groove (33).

8. The intelligent throttling control device for a gate pump according to claim 7, characterized in that: An arcuate groove (372) is provided at the bottom of the accommodating groove (33) around the axis of the rotating disk (31). A limiting post (371) is fixedly provided on the rotating block (37) and extends into the arcuate groove (372) and slidably cooperates with the arcuate groove (372). When the limiting post (371) is located at one end of the arcuate groove (372), the telescopic groove (34) is in an extended shape. When the limiting post (371) is located at the other end of the arcuate groove (372), the telescopic groove (34) is located in the rotating disk (31).

9. The intelligent throttling control device for a gate pump according to claim 7, characterized in that: A rotation drive device (38) for driving the rotating block (37) to rotate is provided at the end of the rotating disk (31).

10. A gate pump intelligent throttling control method, using a gate pump intelligent throttling control device according to any one of claims 1 to 9, characterized in that: The specific steps are as follows: S1. When draining water, the gate pump (1) starts to start and after a preset time is reached, the drive unit (4) drives the switch cover (11) to rotate through the clutch unit (3) in a connected state; S2, the clutch unit (3) is provided with a delayed start time. After the gate pump (1) is turned on for a preset time and the clutch unit (3) reaches the delayed start time, the switch cover (11) is opened to a certain angle, and the clutch unit (3) switches from a connected state to a separated state. The gate pump (1) drives the switch cover (11) to rotate through water flow. After the switch cover (11) is fully opened, the switch cover (11) no longer rotates. S3. During the operation of the gate pump (1), the flow direction detection device (2) detects the flow direction of the water in the gate pump (1). When backflow of the water in the gate pump (1) is detected, the clutch unit (3) switches to the connection state, and the drive unit (4) drives the switch cover (11) to close via the clutch unit (3).

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