Multi-set gate control system

Abstract

The utility model relates to the technical field of hydropower station unit control, in particular to a multi-set gate control system which comprises a pump station hydraulic system, power cabinets, a plurality of control cabinets and a plurality of water inlet gates. One end of each control cabinet is electrically connected with the first power cabinet, the other end of each control cabinet is connected with the pump station hydraulic system, the pump station hydraulic system feeds signals back to the first power cabinet, then the control cabinets judge and output the signals, and the pump station hydraulic system is electrically connected with the water inlet gates. According to the utility model, power supplies and signals of the three sets of control cabinets are completely independent, so that completely independent overhaul and maintenance can be realized, the risk of electric shock of personnel and the risk of falling into a water inlet gate by mistake caused by misoperation of the personnel are effectively reduced, and the safe and stable operation capability of a unit is indirectly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hydropower station unit control, particularly relates to a plurality of sets of gate control system. BACKGROUND

[0002] The hydropower station unit water inlet gate control system is mainly composed of an oil return tank, an oil pump, a control panel cabinet, automatic measurement and control elements, an oil pipeline and a hydraulic gate, and usually one set of water inlet gate control system is arranged for each unit. In order to reduce the space occupied by the plant and save the equipment procurement cost, a design scheme of three sets of gates sharing one hydraulic pump station system, i.e. the "three machines one station" mode, is usually adopted in the design, and the three sets of gate control systems are usually controlled by the same control cabinet. The main advantage of this scheme is to save the production cost, and the normal control function of the equipment can be realized after the completion. However, due to the actual situation on site, the three sets of gate control systems cannot be powered off at the same time, which inevitably brings the risk of personal electric shock and unplanned shutdown of the unit during equipment maintenance and emergency defect elimination.

[0003] The prior art is to install three sets of PLC of three gates in the same control cabinet, and the following problems exist in this mode:

[0004] It is not conducive to equipment maintenance. Usually, the maintenance of the hydropower unit is carried out one by one, and when the water inlet gate control system of the unit is maintained, the water inlet gate control systems of the other two units are in normal operation, and there is a risk that the personnel will accidentally touch the falling loop of the normally operating unit to cause the unit to stop.

[0005] There is a risk of electric shock. At any time, the control cabinet cannot be completely powered off, and the maintenance personnel in the cabinet are prone to touch the live parts and cause electric shock accidents.

[0006] There is a risk of power loop power failure. The three sets of gate control systems share one power supply system, and if the power module fails, it may cause all three sets of gate control systems to lose power and cause the control system to malfunction, thereby causing the accident to expand. UTILITY MODEL CONTENTS

[0007] In view of the technical problems in the background art, the purpose of the utility model is to provide a plurality of sets of gate control systems, and the three sets of gate control systems can be independently controlled to realize the intrinsic safety of the water inlet gate control system maintenance.

[0008] To achieve the above purpose, the technical scheme provided by the utility model is:

[0009] A kind of multi-set gate control system, pump station hydraulic system, power cabinet, several control cabinets and several water inlet gate, the power cabinet includes first power cabinet, the pump station hydraulic system and first power cabinet are electrically connected, the first power cabinet provides power for pump station hydraulic system, one end of the several control cabinets is electrically connected with first power cabinet respectively, the other end is electrically connected with pump station hydraulic system, the pump station hydraulic system feedback signal to first power cabinet, then output signal is judged by several control cabinets, the pump station hydraulic system is electrically connected with several water inlet gate respectively.

[0010] As preferred, the control cabinet includes a first control cabinet, a second control cabinet and a third control cabinet, the water inlet gate includes a first water inlet gate, a second water inlet gate and a third water inlet gate, a gate opening detector I is connected between the first control cabinet and the first water inlet gate.

[0011] As preferred, a gate opening detector II is connected between the second control cabinet and the second water inlet gate.

[0012] As preferred, a gate opening detector III is connected between the third control cabinet and the third water inlet gate.

[0013] As preferred, a door closing electromagnetic valve is arranged between the pump station hydraulic system and the corresponding control cabinet.

[0014] As preferred, an oil pump is connected between the control cabinet and the pump station hydraulic system, and a door opening electromagnetic valve is electrically connected between the control cabinet and the pump station hydraulic system.

[0015] The utility model has the following advantages and beneficial effects:

[0016] In the utility model, compared with the three sets of control system sharing a control cabinet, the three sets of control system independent cabinet can realize independent power supply of control system, independent signal acquisition, and the power cabinet and the control cabinet independent cabinet, the power cabinet 380VAC power supply and the control cabinet 220V and below voltage level power supply loop are independent, which can effectively reduce the electromagnetic interference of strong current loop on signal loop, thereby improving the stability of the control system. The three sets of control cabinet power supply and signal are completely independent, which can realize completely independent maintenance, effectively reducing the risk of electric shock and the risk of misoperation of personnel, thereby indirectly improving the safe and stable operation ability of the unit. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a connection schematic diagram of a multi-set gate control system provided by the utility model;

[0018] Figure 2 It is a door opening operation control schematic diagram of a multi-set gate control system provided by the utility model;

[0019] Figure 3 This is a schematic diagram of the gate lowering operation control of a multi-gate control system provided for this utility model;

[0020] Icons: 101-First control cabinet, 102-Second control cabinet, 103-Third control cabinet, 201-First power cabinet, 300-Pump station hydraulic system, 301-Oil pump, 302-Door lowering solenoid valve, 303-Door opening solenoid valve, 401-First inlet gate, 402-Second inlet gate, 403-Third inlet gate, 501-Gate opening detector I, 502-Gate opening detector II, 503-Gate opening detector III. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] Example

[0024] like Figures 1-3 As shown, a multi-gate control system includes a pump station hydraulic system 300, a power cabinet, several control cabinets, and several inlet gates. The power cabinet includes a first power cabinet 201, which is electrically connected to the pump station hydraulic system 300 and provides power to the pump station hydraulic system 300. One end of each of the several control cabinets is electrically connected to the first power cabinet 201, and the other end is electrically connected to the pump station hydraulic system 300. The pump station hydraulic system 300 feeds back signals to the first power cabinet 201, and then the several control cabinets determine and output signals. The pump station hydraulic system 300 is electrically connected to several inlet gates.

[0025] like Figures 1-3 As shown, the control cabinet includes a first control cabinet 101, a second control cabinet 102 and a third control cabinet 103, and the inlet gate includes a first inlet gate 401, a second inlet gate 402 and a third inlet gate 403.

[0026] like Figures 1-3As shown, the pump station hydraulic system 300 and the first power cabinet 201 are electrically connected, the first power cabinet 201 is electrically connected with the first control cabinet 101, the second control cabinet 102 and the third control cabinet 103 respectively, the first power cabinet 201 is used for accessing the oil tank temperature signal, the oil tank level signal and the pump station system pressure collected from the pump station hydraulic system 300, and after data conversion by the first power cabinet 201, the signals are sent to the first control cabinet 101, the second control cabinet 102 and the third control cabinet 103 respectively.

[0027] The first control cabinet 101 and the first water inlet gate 401 are connected with a gate opening detector I 501, that is, the first control cabinet 101 and the first water inlet gate 401 are electrically connected, the first water inlet gate 401 and the gate opening detector I 501 are electrically connected, and the gate opening detector I 501 and the first control cabinet 101 are electrically connected.

[0028] The second control cabinet 102 and the second water inlet gate 402 are connected with a gate opening detector II 502, that is, the second control cabinet 102 and the second water inlet gate 402 are electrically connected, the second water inlet gate 402 and the gate opening detector II 502 are electrically connected, and the gate opening detector II 502 and the second control cabinet 102 are electrically connected.

[0029] The third control cabinet 103 and the third water inlet gate 403 are connected with a gate opening detector III 503, that is, the third control cabinet 103 and the third water inlet gate 403 are electrically connected, the third water inlet gate 403 and the gate opening detector III 503 are electrically connected, and the gate opening detector III 503 and the third control cabinet 103 are electrically connected.

[0030] The first water inlet gate 401, the second water inlet gate 402 and the third water inlet gate 403 respectively have independent opening measurement devices, and the output signals thereof are respectively connected to the corresponding control cabinets, that is, the gate opening detector I 501 is used for detecting the opening and closing of the first water inlet gate 401 and outputting to the first control cabinet 101; the gate opening detector II 502 is used for detecting the opening and closing of the second water inlet gate 402 and outputting to the second control cabinet 102; and the gate opening detector III 503 is used for detecting the opening and closing of the third water inlet gate 403 and outputting to the third control cabinet 103.

[0031] The gate opening detector is used for detecting the opening and closing of the corresponding water inlet gate, and the gate opening detector can feed back the opening and closing of the gate to the corresponding control cabinet, so as to facilitate timely adjustment of the closing of the gate.

[0032] As Figures 1-3As shown, an oil pump 301 is connected between the control cabinet and the pump station hydraulic system 300. A gate-opening solenoid valve 303 is electrically connected between the first control cabinet 101 and the pump station hydraulic system 300. That is, the first control cabinet 101 and the gate-opening solenoid valve 303 are electrically connected, and the gate-opening solenoid valve 303 is electrically connected to the pump station hydraulic system 300. When the first inlet gate 401 is opened, the first control cabinet 101 sends an opening control signal to the oil pump 301. After the oil pump 301 starts, it loads the gate-opening solenoid valve 303 after a delay. The control oil flows through the pump station hydraulic system 300 and, through the pressure oil, causes oil to enter the lower chamber of the gate and exit the upper chamber, and the gate begins to lift until the first inlet gate 401 is fully open.

[0033] like Figure 2 When the first inlet gate 401 is opened, the first control cabinet 101 outputs an opening / closing signal to the second control cabinet 102 and the third control cabinet 103. During this time, the second and third control cabinets 102 and 103 cannot open the gates. The locking signal is automatically released after the opening process of the first inlet gate 401 is completed. The opening operations of the second and third inlet gates 402 and 403 are similar.

[0034] Furthermore, such as Figures 1-3 As shown, while the first inlet gate 401 is opening, the first control cabinet 101 outputs an opening / closing signal to the pump station hydraulic system 300. The pump station hydraulic system 300 feeds back the signal to the first power cabinet 201, which then controls the second control cabinet 102 and the third control cabinet 103 to prevent them from opening. After the opening process of the first inlet gate 401 is completed, the first power cabinet 201 automatically releases the locking signal according to the uploaded signal transmission route. The opening operations of the second inlet gate 402 and the third inlet gate 403 are similar.

[0035] like Figures 1-3 As shown, when the first inlet gate 401 is lowered, the first control cabinet 101 outputs a lowering control signal to the lowering solenoid valve 302. Control oil flows through the pump station hydraulic system 300, causing oil to enter the upper chamber of the gate and exit the lower chamber, thus lowering the gate. The gate opening detector I501 monitors the opening and closing status of the first inlet gate 401. Once the gate is fully closed, the control signal from the lowering solenoid valve 302 returns to normal. The lowering operations of the second inlet gate 402 and the third inlet gate 403 are similar.

[0036] Three sets of control systems can realize independent control system power, independent signal acquisition, and independent power cabinet and control cabinet, which can effectively reduce the electromagnetic interference of strong current loop on signal loop, thereby improving the stability of the control system, realizing completely independent maintenance, effectively reducing the risk of electric shock and the risk of misoperation caused by misfalling into the water inlet gate, thereby indirectly improving the safe and stable operation ability of the unit.

[0037] The preferred embodiments of the utility model are merely used for limiting the utility model, and the utility model can be changed and varied for the person skilled in the art, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A multiple sluice control system, characterized by, The pump station hydraulic system, the power cabinet, a plurality of control cabinets and a plurality of water inlet gate are provided, the power cabinet comprises a first power cabinet, the pump station hydraulic system and the first power cabinet are electrically connected, the first power cabinet provides power for the pump station hydraulic system, one end of the plurality of control cabinets is electrically connected with the first power cabinet respectively, and the other end is electrically connected with the pump station hydraulic system, the pump station hydraulic system feeds back signals to the first power cabinet, and the signals are output by the plurality of control cabinets, and the pump station hydraulic system is electrically connected with the plurality of water inlet gates.

2. A multiple gate control system according to claim 1 wherein, The control cabinet comprises a first control cabinet, a second control cabinet and a third control cabinet, the water inlet gate comprises a first water inlet gate, a second water inlet gate and a third water inlet gate, a gate opening degree detector I is connected between the first control cabinet and the first water inlet gate.

3. A multiple shutter control system according to claim 2, wherein, A gate opening degree detector II is connected between the second control cabinet and the second water inlet gate.

4. The multiple sluice control system of claim 2, wherein, A gate opening degree detector III is connected between the third control cabinet and the third water inlet gate.

5. The multiple sluice control system of claim 1, wherein, A gate opening degree detector III is connected between the third control cabinet and the third water inlet gate.

6. The multiple sluice control system of claim 2, wherein, The pump station hydraulic system and the corresponding control cabinet are respectively provided with a gate opening electromagnetic valve. The control cabinet and the pump station hydraulic system are connected with an oil pump, and the control cabinet and the pump station hydraulic system are electrically connected with a gate opening electromagnetic valve.

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