Automatic alarming and closing device for sluice gate

Abstract

The utility model discloses an automatic alarming and closing device for a sluice gate, which comprises a first water level sensor, a second water level sensor, a third water level sensor and a fourth water level sensor, the second water level sensor is arranged on the inland river side of the water gate and located at the inland river control water level; the third water level sensor is arranged on the inland river side of the water gate and located at the inland river early warning water level; the gate control module is respectively connected with the first water level sensor, the second water level sensor and the third water level sensor, the audible and visual alarm and the water gate hoist, and is used for collecting water level signals of the first water level sensor, the second water level sensor and / or the third water level sensor; and the audible and visual alarm and the water gate hoist are controlled to act according to the collected water level signal. According to the utility model, the internal and external river same-elevation multi-point sensing module is adopted, the water diversion state of the water gate is automatically controlled according to tide and water diversion and drainage rules, and the operation safety of the water gate is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic gate control systems, in particular to an automatic alarm and closing device for a water gate. Background Art

[0002] The Technical Management Regulations for Water Locks SL75-1994 stipulate that water locks should determine the following relevant indicators based on the project characteristic values ​​of the planned design and the current status of the project as the basis for control and operation: (1) the highest and lowest water levels upstream and downstream; (2) the maximum flow through the lock and the corresponding single-width flow; (3) the maximum water level difference and the corresponding upstream and downstream water levels; (4) the safe water level and flow of the upstream and downstream rivers; and (5) the beneficial water level and flow.

[0003] The following provisions shall be observed when operating the gate: (1) It shall be operated and supervised by skilled personnel, with fixed positions, clear responsibilities, and accurate and timely operation to ensure the safety of the project and operators; (2) Before manual operation of the electric and hand-operated dual-purpose gate hoist, the power supply must be disconnected first; it is strictly forbidden to release the brake when closing the gate, so that the gate falls freely; the crank handle shall be removed immediately after the operation is completed; (3) For gates with locking devices, the locking device shall be opened before closing the gate; (4) When two gate hoists control one gate, they shall be strictly synchronized; (5) If the gate is heavy, stagnant, noisy or other abnormal conditions are found during opening and closing, the machine shall be stopped and checked in time and handled; (6) When using an oil pressure gate hoist, when the gate opens to the predetermined position and the pressure still increases, the return oil control valve shall be opened to the limit position immediately; (7) When the gate opens close to the maximum opening or closes close to the bottom of the gate, it shall be stopped in time; in case the gate is not closed tightly, the cause shall be found out and handled; when using a screw gate hoist, it is strictly forbidden to force the top pressure.

[0004] During the daily operation of the sluice gate, closing the gate is a normalized job that occurs almost every day. The daily operation work basically ensures that there are two people on duty and they are certified. The daily sluice gate inspection work is carried out by the sluice gate operators, mainly including regular inspections, periodic inspections, and special inspections. The sluice gate is subject to special safety appraisals by professional safety appraisal units every 15 to 20 years.

[0005] As the gate for water to flow into the river, the sluice gate is basically set up on the mudflats along the Yangtze River. It is geographically remote and sparsely populated. At present, the professional maintenance market for sluice gates in Shanghai is not very mature and sound. In case of sudden rainstorms, continuous high-intensity work is required. Therefore, a device with automatic alarm and shutdown functions can play a great auxiliary role.

[0006] At present, there are several ways to open and close the gates during the daily operation of the sluice gates: (1) According to the power transmission method of the gate opening and closing machine, there are hydraulic opening and closing, and the other is winch opening and closing; (2) According to the gate electrical automatic control, there are relay-contactor opening and closing control, and the other is PLC system opening and closing control. Relay-contactor opening and closing control mainly opens and closes the gates through button operation, which meets the needs of simple automatic control within a certain range. PLC system opening and closing control, PLC is the abbreviation of Programmable Logic Controller. At present, a computer (running programming software) generally acts as a programmer, and a computer (running configuration software) acts as a human-machine interface.

[0007] At present, various methods and devices for closing sluice gates are all dominated by humans, and the specific gate closing time is determined by real-time monitoring and data comparison by humans, and the closing of the sluice gate is controlled by the interface and controller. However, the existing technology has the following defects:

[0008] 1. The existing technology is human-dominated. The sluice gate operators operate the devices, operating software and control systems to ensure the safety of sluice gate closure, ignoring the defects of people during work;

[0009] 2. The existing devices, software and systems have been running continuously for many years, completely relying on manual operation, ignoring automatic operations such as automatic alarm and automatic shutdown;

[0010] 3. The existing devices, software and control systems can only maintain basic sluice gate closing operations. Some parts are aging, and it is difficult for suppliers to provide follow-up services and updates after iterations. There is no growth potential and no room for optimization. It is entirely controlled by personal experience, and it is difficult to achieve modeled and standardized operations.

[0011] 4. Although the existing single-point water level sensor can also achieve the effect of automatically closing the sluice gate when the inland river reaches the predetermined water level during water diversion, the sluice gate usually has two major functions: water diversion and drainage. In the rainy season, the water level of the inland river rises sharply and needs to be drained and drained. At this time, the single-point sensing module will not be able to adapt to complex working conditions.

[0012] Therefore, the applicant has found a solution to the above-mentioned problem through beneficial exploration and research, and the technical solution to be introduced below is produced in this context. Utility Model Content

[0013] The technical problem to be solved by the utility model is: to provide an automatic alarm and closing device for a water gate which can improve the safety, practicality and convenience of water gate operation in view of the deficiencies in the prior art.

[0014] The technical problem to be solved by the present invention can be achieved by adopting the following technical solutions:

[0015] An automatic alarm and closing device for a sluice gate, comprising:

[0016] A first water level sensor, which is arranged on the outer river side of the sluice and is located at the outer river control water level;

[0017] A second water level sensor, the second water level sensor is arranged on the inner river side of the sluice and is located at the inner river control water level, the inner river control water level and the outer river control water level are at the same elevation;

[0018] a third water level sensor, the third water level sensor being disposed on the inner river side of the sluice and located at an inner river early warning water level, the inner river early warning water level being lower than the inner river control water level; and

[0019] The sound and light alarm and the gate control module are respectively connected to the first water level sensor, the second water level sensor, the third water level sensor, the sound and light alarm and the sluice gate opening and closing machine, and are used to collect water level signals from the first water level sensor, the second water level sensor and / or the third water level sensor, and control the operation of the sound and light alarm and the sluice gate opening and closing machine according to the collected water level signals.

[0020] In a preferred implementation of the utility model, it also includes a first sensor protection shell and a second sensor protection shell, the first sensor protection shell is installed on the outer river side wall of the sluice, the first water level sensor is installed in the first sensor protection shell, the second sensor protection shell is installed on the inner river side wall of the sluice, and the second water level sensor and the third water level sensor are installed in the second sensor protection shell.

[0021] In a preferred embodiment of the present invention, the first sensor protection housing and / or the second sensor protection housing is / are made of a rectangular stainless steel cage.

[0022] In a preferred embodiment of the present invention, the first water level sensor, the second water level sensor and / or the third water level sensor are float switches.

[0023] In a preferred embodiment of the present utility model, the inland river warning water level is 10 cm to 20 cm lower than the inland river control water level or the outer river control water level.

[0024] In a preferred embodiment of the present utility model, the sound and light alarm is an industrial-grade XYSG-01 voice sound and light alarm.

[0025] In a preferred embodiment of the utility model, the gate control module includes a first step-down transformer, a first intermediate relay, a second intermediate relay and a manual switching button; both ends of the input side of the first step-down transformer are connected to 380V AC, and one end of its output side is respectively connected to one end of the coil of the first intermediate relay, one end of the coil of the second intermediate relay, and one end of the normally open contact of the first intermediate relay, the other end of the coil of the first intermediate relay is connected to the other end of the output side of the first step-down transformer through the third water level sensor, the other end of the coil of the second intermediate relay is connected to the other end of the output side of the first step-down transformer through the manual switching button, the first water level sensor, and the second water level sensor, the other end of the normally open contact of the first intermediate relay is connected to the other end of the output side of the first step-down transformer through the sound and light alarm, and the normally open contact of the second intermediate relay is connected in parallel to the control circuit of the sluice gate opening and closing machine.

[0026] In a preferred embodiment of the present utility model, the gate control module includes a second step-down transformer and a PLC control unit, the two ends of the input side of the second step-down transformer are connected to 380V AC, the two ends of the output side are connected to the power supply end of the PLC control unit, the COM end of the PLC control unit is respectively connected to one end of the first water level sensor, the second water level sensor, and the third water level sensor, and its first, second, and third signal input ends are correspondingly connected to the other ends of the first water level sensor, the second water level sensor, and the third water level sensor, the first and second signal output ends of the PLC control unit are correspondingly connected to the coil of the intermediate relay in the control circuit of the sluice gate opening and closing machine, and its third signal output end is connected to the signal input end of the sound and light alarm.

[0027] Due to the adoption of the above technical scheme, the beneficial effect of the utility model is that the utility model adopts a multi-point sensing module with the same elevation of the inner and outer rivers, and designs the corresponding electromechanical control system scheme and the combined PLC programming control system according to the tide and drainage laws, so as to realize the automatic control of the water diversion status of the sluice, ensure the safety of the sluice operation, and improve the practicability and convenience of the sluice operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1It is a schematic diagram of the arrangement of the water level sensor of the utility model.

[0030] Figure 2 It is a schematic diagram of the electrical control of the utility model.

[0031] Figure 3 It is a schematic diagram of the PLC control of the utility model.

[0032] Figure 4 The utility model is a PLC control ladder diagram. DETAILED DESCRIPTION

[0033] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0034] See also Figure 1 Combined with Figure 2 and Figure 3 , the figure shows an automatic alarm and closing device for a sluice gate, including water level sensors SQ1, SQ2, SQ3, an audible and visual alarm 100 and a gate control module.

[0035] The water level sensor SQ1 is arranged on the outer river side of the sluice and is located at the outer river control water level. The water level sensor SQ2 is arranged on the inner river side of the sluice and is located at the inner river control water level. The inner river control water level and the outer river control water level are at the same elevation, which is the normal water level elevation. The water level sensor SQ3 is arranged on the inner river side of the sluice and is located at the inner river warning water level. The inner river warning water level is lower than the inner river control water level. The inner river warning water level is 10cm to 20cm lower than the inner river control water level or the outer river control water level according to the size of the river. In this embodiment, the water level sensors SQ1, SQ2, and SQ3 preferably use float switches.

[0036] The utility model also includes sensor protection shells 200a and 200b. The sensor protection shell 200a is installed on the outer river side wall of the sluice and is located in an appropriate visible position. If there is any damage, it can be discovered in time. The water level sensor SQ1 is installed in the sensor protection shell 200a. The sensor protection shell 200b is installed on the inner river side wall of the sluice and is located in an appropriate visible position. If there is any damage, it can be discovered in time. The water level sensors SQ2 and SQ3 are installed in the sensor protection shell 200b. In this embodiment, the sensor protection shells 200a and 200b are rectangular stainless steel cages, which can avoid interference from gate surges and floating garbage, ensure the accuracy of the sensed water level, and ensure the accuracy of the water level acquisition signal.

[0037] The gate control module is respectively connected to the water level sensors SQ1, SQ2, SQ3, the sound and light alarm 100 and the sluice gate opening and closing machine 10, and is used to collect water level signals from the water level sensors SQ1, SQ2, SQ3, and control the sound and light alarm 100 and the sluice gate opening and closing machine 10 according to the collected water level signals.

[0038] The gate control module of the utility model can be controlled electrically. The electrical control circuit diagram is shown in Figure 2 The utility model adheres to the design principle of safety and reliability, and adopts a safe voltage of 24V for the water level sensing module power supply immersed in water to avoid the risk of leakage. The box part in the figure is the special control circuit of the automatic warning and closing system of the water gate, and the rest is the basic control circuit of the water gate opening and closing machine.

[0039] The gate control module includes a step-down transformer T, an intermediate relay KA1, an intermediate relay KA2, and a manual switching button SB. The two ends of the input side of the step-down transformer T are connected to 380V AC, and one end of the output side is respectively connected to one end of the coil of the intermediate relay KA1, one end of the coil of the intermediate relay KA2, and one end of the normally open contact of the intermediate relay KA1. The other end of the coil of the intermediate relay KA1 is connected to the other end of the output side of the step-down transformer T through the water level sensor SQ3, and the other end of the coil of the intermediate relay KA2 is connected to the other end of the output side of the step-down transformer T through the manual switching button SB, the water level sensor SQ1, and the water level sensor SQ2. The other end of the normally open contact of the intermediate relay KA1 is connected to the other end of the output side of the step-down transformer T through the sound and light alarm 100, and the normally open contact of the intermediate relay KA2 is connected in parallel to the control circuit of the water gate opening and closing machine 10.

[0040] The automatic early warning and closing control process of the water gate of the utility model is as follows:

[0041] 1. When the sluice gate is in water-intake condition, after the sluice gate is opened, the water level at the gate mouth is high outside and low inside, and the water level of the inner river gradually rises to the water level sensor SQ3. When it reaches the warning water level, the water level sensor SQ3 is turned on, and the coil of the intermediate relay KA1 connected in series with it is energized and attracted. The sound and light alarm 100 controlled by KA1 is energized and works, and sends out a sound and light alarm signal. The sound and light alarm 100 can adopt the common industrial-grade XYSG-01 voice sound and light alarm, and the voice content can be customized to notify the staff to prepare to close the gate. If there is no manual intervention, the water level of the inner river continues to rise to the water level sensor SQ2, and the water level sensor SQ2 is turned on. At this time, the water level sensor SQ1 installed at the same elevation is in a conducting state because the water level of the outer river is higher than that of the inner river. The coil of the intermediate relay KA2 connected in series with the water level sensors SQ1 and SQ2 is energized and attracted, and the gate closing contactor coil controlled by KA2 is energized and attracted, and the sluice gate opening and closing machine 10 runs to automatically close the gate.

[0042] 2. When the sluice gate is in the drainage condition, after the sluice gate is opened, the water levels of the rivers inside and outside the gate are lower than the water level at the control point, the water level sensors SQ1 and SQ2 are not conducting, the coil of the intermediate relay KA2 connected in series with the water level sensors SQ1 and SQ2 is not energized, and the sluice gate opening and closing machine 10 will not operate automatically. If the high water level of the inner river is higher than the water level at the control point due to heavy rain and needs to be drained, after the gate is opened, the water level sensor SQ2 is in the conducting state, and the water level sensor SQ1 at the same elevation is not conducting because the outer river is at a low water level, the intermediate relay KA2 is not energized, and the sluice gate opening and closing machine 10 will not operate automatically.

[0043] 3. In special working conditions, if the water level of the inner river is much higher than the water level at the control point due to heavy rain, and the water level of the outer river has not dropped to within the water level elevation of the reference point due to tidal reasons, the water level sensors SQ1 and SQ2 are both in the on state, the intermediate relay KA2 is energized, and the automatic closing system will interfere with the drainage. At this time, the manual switching switch SB needs to be switched to the manual state to avoid system malfunction. When the water level of the outer river drops to within the water level elevation of the reference point, it can be switched back to the automatic state.

[0044] When the gate control module of the utility model is controlled by PLC, the circuit adopts the following Figure 3 The PLC control program ladder diagram is as shown in Figure 4 shown.

[0045] The gate control module includes a step-down transformer T and a PLC control unit. The two ends of the input side of the step-down transformer T are connected to 380V AC power, and the two ends of its output side are connected to the power supply end of the PLC control unit. The COM end of the PLC control unit is respectively connected to one end of the water level sensors SQ1, SQ2, and SQ3, and its signal input ends X5, X6, and X7 are correspondingly connected to the other end of the water level sensors SQ1, SQ2, and SQ3. The signal output ends Y0 and Y1 of the PLC control unit are correspondingly connected to the coil of the intermediate relay in the control circuit of the sluice gate opening and closing machine 10, and its signal output end Y2 is connected to the signal input end of the sound and light alarm 100.

[0046] The automatic early warning and closing control process of the water gate of the utility model is as follows:

[0047] 1. When the sluice gate is in water-intake condition, after the sluice gate is opened, the water level at the gate mouth is high outside and low inside, and the water level of the inner river gradually rises to the water level sensor SQ3. When it reaches the warning water level, the water level sensor SQ3 is turned on, the PLC input terminal X7 receives the start signal, the program-controlled output terminal Y2 is energized, and the corresponding controlled sound and light alarm 100 is energized to work and send out a sound and light alarm signal. The sound and light alarm 100 can adopt the common industrial-grade XYSG-01 voice sound and light alarm, and the voice content can be customized to notify the staff to prepare to close the gate. If there is no manual intervention, the water level of the inner river continues to rise to the water level sensor SQ2, and the water level sensor SQ2 is turned on. At this time, the water level sensor SQ1 installed at the same elevation is in the on state at the same time because the water level of the outer river is higher than that of the inner river, which meets the Y1 start setting of the program. The gate closing contactor coil controlled by Y1 is energized and attracted, and the sluice gate opening and closing machine 10 runs to automatically close the gate.

[0048] 2. In special working conditions, if the water level of the inner river is much higher than the water level at the control point due to heavy rain, and the water level of the outer river has not dropped to within the water level elevation of the reference point due to tidal reasons, the water level sensors SQ1 and SQ2 are both in the on state, meeting the Y1 start setting of the program, and the automatic closing system will interfere with the drainage. At this time, the manual switch SB needs to be switched to the manual state to avoid system malfunction. When the water level of the outer river drops to within the water level elevation of the reference point, it can be switched back to the automatic state.

[0049] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic alarm and closing device for a sluice gate, characterized in that: include: A first water level sensor, which is arranged on the outer river side of the sluice and is located at the outer river control water level; A second water level sensor, the second water level sensor is arranged on the inner river side of the sluice and is located at the inner river control water level, the inner river control water level and the outer river control water level are at the same elevation; a third water level sensor, the third water level sensor being disposed on the inner river side of the sluice and located at an inner river early warning water level, the inner river early warning water level being lower than the inner river control water level; and The sound and light alarm and the gate control module are respectively connected to the first water level sensor, the second water level sensor, the third water level sensor, the sound and light alarm and the sluice gate opening and closing machine, and are used to collect water level signals from the first water level sensor, the second water level sensor and / or the third water level sensor, and control the operation of the sound and light alarm and the sluice gate opening and closing machine according to the collected water level signals.

2. The automatic alarm and closing device for a sluice gate according to claim 1, characterized in that: It also includes a first sensor protection shell and a second sensor protection shell. The first sensor protection shell is installed on the outer river side wall of the sluice. The first water level sensor is installed in the first sensor protection shell. The second sensor protection shell is installed on the inner river side wall of the sluice. The second water level sensor and the third water level sensor are installed in the second sensor protection shell.

3. The automatic alarm and closing device for a sluice gate as claimed in claim 2, characterized in that: The first sensor protection shell and / or the second sensor protection shell is a rectangular stainless steel cage.

4. The automatic alarm and closing device for a sluice gate as claimed in claim 1, characterized in that: The first water level sensor, the second water level sensor and / or the third water level sensor are float switches.

5. The automatic alarm and closing device for a sluice gate as claimed in claim 1, characterized in that: The inland river warning water level is 10cm to 20cm lower than the inland river control water level or the outer river control water level.

6. The automatic alarm and closing device for a sluice gate as claimed in claim 1, characterized in that: The sound and light alarm is an industrial-grade XYSG-01 voice sound and light alarm.

7. The automatic alarm and closing device for a sluice gate according to any one of claims 1 to 6, characterized in that: The gate control module includes a first step-down transformer, a first intermediate relay, a second intermediate relay and a manual switching button; both ends of the input side of the first step-down transformer are connected to 380V AC power, and one end of its output side is respectively connected to one end of the coil of the first intermediate relay, one end of the coil of the second intermediate relay, and one end of the normally open contact of the first intermediate relay; the other end of the coil of the first intermediate relay is connected to the other end of the output side of the first step-down transformer through the third water level sensor; the other end of the coil of the second intermediate relay is connected to the other end of the output side of the first step-down transformer through the manual switching button, the first water level sensor, and the second water level sensor; the other end of the normally open contact of the first intermediate relay is connected to the other end of the output side of the first step-down transformer through the sound and light alarm; and the normally open contact of the second intermediate relay is connected in parallel to the control circuit of the sluice gate opening and closing machine.

8. The automatic alarm and closing device for a sluice gate according to any one of claims 1 to 6, characterized in that: The gate control module includes a second step-down transformer and a PLC control unit. The two ends of the input side of the second step-down transformer are connected to 380V AC power, and the two ends of the output side are connected to the power supply end of the PLC control unit. The COM end of the PLC control unit is respectively connected to one end of the first water level sensor, the second water level sensor, and the third water level sensor, and its first, second, and third signal input ends are correspondingly connected to the other ends of the first water level sensor, the second water level sensor, and the third water level sensor. The first and second signal output ends of the PLC control unit are correspondingly connected to the coil of the intermediate relay in the control circuit of the sluice gate opening and closing machine, and its third signal output end is connected to the signal input end of the sound and light alarm.

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