PLC (Programmable Logic Controller) control device for automatic inspection of pump station

Abstract

The utility model relates to a pump station automatic inspection PLC control device, which comprises a remote monitoring center and an on-site PLC control cabinet, the on-site PLC control cabinet is installed near a pump station, an upper monitoring system host is arranged in the remote monitoring center, a PLC is arranged in the on-site PLC control cabinet, the PLC is connected with the upper monitoring system host through a network, and the upper monitoring system host is connected with the on-site PLC control cabinet. A man-machine interface connected with the PLC is arranged on the outer wall of the field PLC control cabinet, the host of the upper monitoring system is connected with a printer, and power equipment and motor equipment of the pump station and the field sensor are connected with the PLC; a moisture-proof dehumidification mechanism is installed in the field PLC control cabinet, the moisture-proof dehumidification mechanism comprises a dehumidifier installed on the inner wall of the field PLC control cabinet, a temperature and humidity sensor is installed on the dehumidifier, and fans corresponding to the heat dissipation holes are arranged on the inner wall of the field PLC control cabinet. The device is good in inspection, moisture-proof and dehumidification effects and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to pump station inspection technical field especially relates to a kind of pump station automatic inspection PLC control device. BACKGROUND

[0002] At present, some industrial projects in water intake pump house, pump station near water source, then distance plant area is far, pump and valve motor control more still uses conventional power control box, operating personnel often need to spend much time to and fro, check the equipment in these remote places, it is extremely inconvenient.And because control box is installed in pump station vicinity, the environment around pump station is relatively humid, control box is generally damp, moisture enters the content of control box and is easy to cause damage to internal element. SUMMARY

[0003] The utility model aims at solving the insufficient prior art, and provides a kind of pump station automatic inspection PLC control device.

[0004] The utility model discloses a kind of pump station automatic inspection PLC control device, including remote monitoring center and field PLC control cabinet, field PLC control cabinet is installed in pump station vicinity, remote monitoring center is equipped with upper monitoring system host computer, field PLC control cabinet is equipped with PLC controller, PLC controller is connected with upper monitoring system host computer by network, field PLC control cabinet outer wall is equipped with the man-machine interface connected with PLC controller, upper monitoring system host computer is connected with printer, the power equipment, motor equipment, field sensor of pump station are connected with PLC controller;Damp-proof dehumidification mechanism is installed in field PLC control cabinet, damp-proof dehumidification mechanism includes the dehumidifier installed in the inner wall of field PLC control cabinet, temperature and humidity sensor is installed on the dehumidifier, and the inner wall of field PLC control cabinet is equipped with fan corresponding with heat dissipation hole, dust screen corresponding with heat dissipation hole is detachably installed on the outer wall of field PLC control cabinet, and waterproof air-permeable membrane is equipped on the side of dust screen close to heat dissipation hole, temperature and humidity sensor, dehumidifier and fan are connected with PLC controller respectively.

[0005] In particular, PLC controller and upper monitoring system host computer are connected with municipal flood control center by network respectively.

[0006] In particular, the power equipment of pump station includes main power supply, standby power supply, transformer, switch cabinet.

[0007] In particular, the motor equipment of pump station includes water pump motor, fan motor, valve actuator, frequency converter, motor protection relay.

[0008] In particular, the field sensor of pump station includes liquid level sensor, pressure sensor, flowmeter, temperature sensor, humidity sensor, vibration sensor, leakage detector.

[0009] Particularly, the dust screen is provided with a rectangular sealing ring on the side close to the heat dissipation hole, and the outer wall of the on-site PLC control cabinet is provided with a rectangular slot along the edge of the heat dissipation hole, and the sealing ring is inserted into the slot.

[0010] The beneficial effects of the utility model are: the PLC control cabinet can automatically patrol and inspect the equipment in the pump station, reduce the labor intensity, and can also transmit relevant data to the remote monitoring center, facilitate remote monitoring and operation of the staff, maintain data and information interconnection with the municipal flood control center, provide effective assistance for the realization of the city's intelligent water construction, improve the efficiency of pump station operation and maintenance, reduce the operation and maintenance cost, and can achieve good flood control effect and economic benefit; at the same time, the setting of the moisture-proof and dehumidifying mechanism can improve the moisture-proof effect of the PLC control cabinet and avoid damage to the internal components. BRIEF DESCRIPTION OF DRAWINGS

[0011] Fig. 1 It is a structural schematic view of the utility model;

[0012] Fig. 2 It is a structural schematic view of the moisture-proof and dehumidifying mechanism of the utility model;

[0013] In the figure: 1-remote monitoring center; 2-on-site PLC control cabinet; 3-upper monitoring system host; 4-PLC controller; 5-human-computer interface; 6-printer; 7-power equipment; 8-electric motor equipment; 9-on-site sensor; 10-dehumidifier; 11-temperature and humidity sensor; 12-heat dissipation hole; 13-fan; 14-dust screen; 15-waterproof air-permeable membrane; 16-sealing ring; 17-municipal flood control center; 18-moisture-proof and dehumidifying mechanism;

[0014] The utility model will be described in detail below in combination with the embodiments of the utility model and the accompanying drawings. DETAILED DESCRIPTION

[0015] The utility model will be described in detail below in combination with the embodiments of the utility model and the accompanying drawings.

[0016] For example, Figs. 1-2As shown, a kind of pump station automatic inspection PLC control device, including remote monitoring center 1 and field PLC control cabinet 2, field PLC control cabinet 2 is installed in the vicinity of pump station, remote monitoring center 1 is equipped with the host computer 3 of upper monitoring system, field PLC control cabinet 2 is equipped with PLC controller 4, PLC controller 4 is connected with the host computer 3 of upper monitoring system by network, field PLC control cabinet 2 outer wall is equipped with the man-machine interface 5 connected with PLC controller 4, the host computer 3 of upper monitoring system is connected with printer 6, the power equipment 7 of pump station, motor equipment 8, field sensor 9 are connected with PLC controller 4.PLC controller 4 and the host computer 3 of upper monitoring system are connected with city flood control center 17 respectively by network, keep the interconnection of data and information with city flood control center 17, can provide effective help for the realization of city wisdom water affair construction.

[0017] The power equipment 7 of pump station includes main power supply, backup power supply, transformer, switch cabinet.Main power supply provides power supply, backup power supply supplies power for important equipment when main power supply fails, transformer converts high-voltage grid voltage into low voltage suitable for pump station use, switch cabinet is used to distribute power to each power consumption equipment, and contains circuit breaker, contactor and other protection and control devices.

[0018] The motor equipment 8 of pump station includes water pump motor, fan motor, valve actuator, frequency converter, motor protection relay.Water pump motor is the main power source for driving water pump to work, fan motor is used in ventilation system or other places needing air flow, valve actuator is mainly driven by motor to control the opening and closing of valve, frequency converter is used to adjust the speed of motor to adapt to different working requirements, improve efficiency and reduce energy consumption, motor protection relay is used to monitor overload, short circuit and other abnormal conditions, and take protective measures.

[0019] The field sensor 9 of pump station includes liquid level sensor, pressure sensor, flow meter, temperature sensor, humidity sensor, vibration sensor, leakage detector.Liquid level sensor is used to detect the liquid height in water pool or storage tank, pressure sensor is used to measure the pressure of fluid in pipeline, flow meter is used to calculate the amount of fluid passing through pipeline, temperature sensor is used to monitor water temperature or the temperature of other medium, humidity sensor is used to measure environmental humidity, especially in electrical control room, vibration sensor is used to monitor the working state of mechanical components, to prevent problems caused by imbalance or wear, leakage detector is used to detect whether liquid leakage occurs.

[0020] The field PLC control cabinet 2 is provided with a damp-proof and dehumidifying mechanism 18, the damp-proof and dehumidifying mechanism 18 comprises a dehumidifier 10 installed on the inner wall of the field PLC control cabinet 2, the dehumidifier 10 is provided with a temperature and humidity sensor 11, the inner wall of the field PLC control cabinet 2 is provided with a fan 13 corresponding to a heat dissipation hole 12, the outer wall of the field PLC control cabinet 2 is detachably provided with a dust screen 14 corresponding to the heat dissipation hole 12, the dust screen 14 is provided with a waterproof and breathable film 15 on the side close to the heat dissipation hole 12, the dust screen 14 is provided with a rectangular sealing ring 16 on the side close to the heat dissipation hole 12, the outer wall of the field PLC control cabinet 2 is provided with a rectangular slot along the edge of the heat dissipation hole 12, the sealing ring 16 is inserted into the slot, and the temperature and humidity sensor 11, the dehumidifier 10 and the fan 13 are connected with the PLC controller 4.

[0021] When the utility model works, the input module of the PLC controller 4 receives the input signals sent by the power equipment 7, the motor equipment 8, the field sensor 9 and the man-machine interface 5 and stores the signals in the memory, judges and processes the input signals according to the preset program in the memory through the central processing unit, and outputs the signal to control the motor equipment 8 to run at low speed to complete the equipment regular inspection or control the motor equipment 8 to work normally according to the time interval and the running mode set by the program through the output module, if the equipment inspection process appears the fault, then disconnects its main power loop, the real-time data in the running process is recorded in the memory of the PLC controller 4, is transmitted to the man-machine interface 5 to display and is transmitted to the upper monitoring system host 3 through the communication technology respectively, so that the operation personnel can monitor the equipment, can reduce the labor intensity of the operation personnel, improves the efficiency and the automation degree. When the damp-proof and dehumidifying mechanism 18 works, the PLC controller 4 receives the signal of the temperature and humidity sensor 11, judges according to the preset value and controls the dehumidifier 10 and the fan 13, when needing dehumidification, controls the dehumidifier 10 and the fan 13 to work, the dehumidifier 10 adsorbs the moisture in the air, the fan 13 accelerates the air circulation, and the waterproof and breathable film 14 and the dust screen 14 are arranged, not only can avoid the dust into the cabinet, but also can prevent the moisture from entering, improve the damp-proof effect.

[0022] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms“center”,“longitudinal”,“transverse”,“length”,“width”,“thickness”,“upper”,“lower”,“front”,“rear”,“left”,“right”,“vertical”,“horizontal”,“top”,“bottom”,“inner”,“outer”,“clockwise”,“counterclockwise”,“axial”,“radial”,“circumferential” are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0023] In the utility model, unless another definite provision and limitation, the term "installation", "link", "connection", "fix" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection or each other can communicate;Can be direct connection, also can indirectly connect through intermediate medium, can be two element inside's intercommunication or two element's interaction relation, unless another definite limitation.For ordinary skilled person in the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0024] The utility model has been described above in conjunction with the drawings, obviously, the specific implementation of the utility model is not limited by the above-mentioned mode, as long as various improvements are carried out using the method concept and technical scheme of the utility model, or directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A PLC control device for automatic inspection of pumping stations, comprising a remote monitoring center (1) and a field PLC control cabinet (2), characterized in that, The on-site PLC control cabinet (2) is installed near the pumping station. The remote monitoring center (1) is equipped with a host computer (3) of the upper monitoring system. The on-site PLC control cabinet (2) is equipped with a PLC controller (4). The PLC controller (4) is connected to the host computer (3) of the upper monitoring system via a network. The outer wall of the on-site PLC control cabinet (2) is equipped with a human-machine interface (5) connected to the PLC controller (4). The host computer (3) of the upper monitoring system is connected to a printer (6). The power equipment (7), motor equipment (8), and on-site sensors (9) of the pumping station are connected to the PLC controller (4). Moisture-proof equipment is installed inside the on-site PLC control cabinet (2). The dehumidification mechanism (18) includes a dehumidifier (10) installed on the inner wall of the field PLC control cabinet (2). A temperature and humidity sensor (11) is installed on the dehumidifier (10). A fan (13) corresponding to the heat dissipation hole (12) is provided on the inner wall of the field PLC control cabinet (2). A dustproof net (14) corresponding to the heat dissipation hole (12) is detachably installed on the outer wall of the field PLC control cabinet (2). A waterproof and breathable membrane (15) is provided on the side of the dustproof net (14) close to the heat dissipation hole (12). The temperature and humidity sensor (11), the dehumidifier (10) and the fan (13) are respectively connected to the PLC controller (4).

2. The automatic inspection PLC control device for pumping stations according to claim 1, characterized in that, The PLC controller (4) and the host computer of the upper monitoring system (3) are connected to the city flood control center (17) via the network.

3. The automatic inspection PLC control device for pumping stations according to claim 1, characterized in that, The power equipment (7) of the pumping station includes the main power supply, backup power supply, transformer, and switch cabinet.

4. The automatic inspection PLC control device for pumping stations according to claim 1, characterized in that, The electric motor equipment (8) of the pumping station includes water pump motors, fan motors, valve actuators, frequency converters, and motor protection relays.

5. The automatic inspection PLC control device for pumping stations according to claim 1, characterized in that, The field sensors (9) of the pump station include level sensors, pressure sensors, flow meters, temperature sensors, humidity sensors, vibration sensors, and leak detectors.

6. The automatic inspection PLC control device for pumping stations according to claim 1, characterized in that, A rectangular sealing ring (16) is provided on the side of the dustproof net (14) near the heat dissipation hole (12). A rectangular slot is provided on the outer wall of the field PLC control cabinet (2) along the edge of the heat dissipation hole (12), and the sealing ring (16) is inserted into the slot.

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