CN201679037U - Secondary constant pressure water supply device - Google Patents

Abstract

The utility model relates to a secondary constant pressure water supply device, comprising a water storage/air tank, an electric contact pressure gauge at the water inlet end, an electric contact pressure gauge at the water outlet end, a remote transmission pressure gauge and a high water tank water level gauge. The electric contact pressure gauge at the water end, the electric contact pressure gauge at the water outlet, and the remote pressure gauge are equipped with corresponding water inlet sensors, water outlet sensors, and remote pressure sensors. The above sensors communicate with GPRS through the 485 bus Module, PLC communication module and inverter are connected, PLC programmable controller collects information from each sensor, and sends it to the regional management center through the GPRS communication module, and the GPRS communication module also accepts the control commands sent by the regional management center to complete remote parameter control . The utility model has the advantages of simple structure, reliable operation and adjustable dynamic parameters, and a regional management center can manage multiple remote constant-pressure water supply devices through the wireless communication of the GPRS module.

Description

Secondary constant pressure water supply device

technical field

The utility model relates to a water supply device, in particular to a secondary constant pressure water supply device with remote control capability.

Background technique

Existing water supply devices mainly include water supply control cabinets, water pumps, and water supply pipelines. Due to the lack of remote control systems, especially as the number of users and the water supply environment change, parameters cannot be dynamically modified in real time, and can only be controlled by setting fixed The scheme independently completes the water supply function, and at the same time cannot perform dynamic information upload, real-time manual control intervention and other functions. In the case of extremely bad water supply environment, the effect cannot be guaranteed.

Contents of the invention

The purpose of the utility model is to provide a secondary constant pressure water supply device with reliable operation, adjustable dynamic parameters, and support for supervision and control. It is used to overcome the shortcomings of existing water supply devices.

The technical scheme of the utility model is: including water storage/air tank, electric contact pressure gauge at the water inlet end, electric contact pressure gauge at the water outlet end, remote transmission pressure gauge, high water tank water level gauge, regional management center and frequency conversion control system, It is characterized in that: the electric contact pressure gauge at the water inlet, the electric contact pressure gauge at the water outlet, and the remote pressure gauge are provided with corresponding water inlet sensors, water outlet sensors, and remote pressure sensors; The above frequency conversion control system is equipped with frequency converter, PLC programmable controller, GPRS communication module and analog quantity sensor; the water inlet sensor, water outlet sensor and remote pressure sensor communicate with GPRS communication module and PLC Programmable controller and inverter connection.

The PLC programmable controller collects the information from the water inlet sensor, the water outlet sensor, and the remote pressure sensor, and sends it to the regional management center through the GPRS communication module. The GPRS communication module also accepts the control commands sent by the regional management center to complete the remote parameters. control.

The utility model has the advantages of simple structure, reliable operation and adjustable dynamic parameters, and a regional management center can manage multiple remote constant-pressure water supply devices through the wireless communication of the GPRS module.

The utility model not only enables the control center to know the field information in real time, but also greatly improves the performance of the device. Under the premise of no human control, the PLC programmable controller completes the constant pressure water supply according to the inherent control program; When it is unstable, the control center can modify a series of parameters such as PID target value and shutdown conditions through parameter setting to meet the needs of users and achieve the purpose of secondary constant pressure water supply.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the embodiment figure that adopts the utility model.

In the figure: 1. Inverter, 2. PLC programmable controller, 3. GPRS communication module, 4. Analog sensor, 5. Water storage/air tank, 6. Electric contact pressure gauge at water inlet, 7. Suction Exhaust valve, 8. Electrical contact pressure gauge at the water outlet, 9. Remote pressure gauge, 10. High tank water level gauge, 11. Water inlet sensor, 12. Water outlet sensor, 13. Remote pressure sensor, 14 area Management center, 15. Frequency conversion control system.

Detailed ways

The secondary constant pressure water supply device of the present utility model comprises a water storage/gas tank 5, an electric contact pressure gauge 6 at the water inlet end, a suction and exhaust valve 7, an electric contact pressure gauge 8 at the water outlet end, a remote transmission pressure gauge 9, The water level gauge 10 of the high water tank and the frequency conversion control system 15. The water inlet end electric contact pressure gauge 6, the water outlet end electric contact pressure gauge 8, and the remote pressure gauge 9 are provided with corresponding water inlet end sensors 11, water outlet end sensors 12, and remote transmission pressure sensors 13. The frequency conversion control system 15 is equipped with a frequency converter 1 , a PLC programmable controller 2 , a GPRS communication module 3 and an analog sensor 4 . The water inlet sensor 11, the water outlet sensor 12, the remote pressure sensor 13 are connected with the GPRS communication module 3, the PLC programmable controller 2 and the frequency converter 1 in the frequency conversion control system 15 through the 485 bus.

One end of the water storage/air tank 5 is connected to the municipal pipe network, and the other end is connected to the pressurized water pump through a gate valve. The water outlet electric contact pressure gauge 8 and the remote transmission pressure gauge 9 are installed behind the pressurized water pump. The water inlet end electric contact pressure gauge 6 and the suction and exhaust valve 7 are installed on the water storage/air tank 5 . Water flow signal, water pressure, temperature and other signals are collected by the analog sensor 4, and the water level gauge 10 of the high water tank is an auxiliary monitoring signal installed under special circumstances. The parameters of the inverter 1 are given by the PLC programmable controller 2, and the PLC programmable controller 2 has a fixed control logic inside, and at the same time, the PLC programmable controller 2 transmits the local information in real time through the water inlet sensor 11 and the water outlet sensor 12. The remote pressure sensor 13 collects and sends to the regional management center through the GPRS communication module 3, and also accepts the control commands sent by the management center through the GPRS communication module 3 to complete artificial parameter control.

When the pressure detected by the electric contact pressure gauge 6 at the water inlet is greater than the starting threshold, the system starts, and at the same time, when the pressure detected by the electric contact pressure gauge 8 at the water outlet is lower than the starting threshold, it starts to run. The remote pressure gauge 9 sends the analog signal to the inverter 1 to realize constant pressure control, and at the same time sends the signal to the PLC programmable controller 2 for processing, and then sends the data to the regional management center 14 through the GPRS communication module 3, and at the same time sends the data to the regional management center 14. The data of the management center 14 also includes signals such as flow, voltage, current, temperature, etc. collected by the analog sensor 4 . When the PLC programmable controller 2 detects that the water inlet pressure is lower than the set safety threshold through the water inlet electric contact pressure gauge 6, the system shuts down due to insufficient water inlet pressure, or the PLC programmable controller 2 detects that the water inlet pressure is lower than the set safety threshold. The electric contact pressure gauge 8 is higher than the maximum allowable pressure or detects that the high-level water tank water level gauge 10 has a signal, and it will automatically stop. When the PLC programmable controller 2 is working, if the water pressure is stable and the user's water consumption is close to 0, the system will work for 1 minute and then enter the dormant state. Various states and main parameters of the system are sent to the information center through the GPRS communication module 3, and control commands are also sent to the PLC programmable controller 2 at the same time.

As shown in the embodiment of FIG. 2 . A server is set up in the regional management center 14, which uses a fixed IP to connect to the Internet, provides a man-machine interface, and completes functions such as database records and communication connections. A regional management server can directly control and manage 250 constant pressure water supply equipment.

In the control cabinet of each water supply point, use the PLC programmable controller 2 and the frequency converter 1 to complete the conventional constant pressure water supply control, and connect a GPRS communication module 3 to the PLC programmable controller 2 through the 485 bus to realize remote control. communication. The frequency converter 1 also communicates with the PLC programmable controller 2 through the 485 bus.

By installing sensors and communication devices, it provides data collection, monitoring of equipment operating status, remote manual parameter adjustment, etc. When multiple such water supply devices are installed in an area and a control center is set up, a complete pipeline network water supply management and constant pressure water supply service can be provided for an area, providing a new means for pipeline management of water companies.

Claims (2)

1. secondary constant pressure water supply equipment, comprise water storage/gas tank (5), water inlet end electric contact point pressure gauge (6), water side electric contact point pressure gauge (8), teletransmission pressure meter (9), high level cistern limnimeter (10), district management center (14) and frequency-changing control system (15), it is characterized in that: described water inlet end electric contact point pressure gauge (6), water side electric contact point pressure gauge (8), teletransmission pressure meter (9) are provided with corresponding with it water inlet end sensor (11), water side sensor (12), teletransmission pressure sensor (13); Be provided with frequency converter (1), PLC programmable logic controller (2), GPRS communication module (3) and analog sensor (4) in the described frequency-changing control system (15); Described water inlet end sensor (11), water side sensor (12), teletransmission pressure sensor (13) are connected with GPRS communication module (3), PLC programmable logic controller (2) and frequency converter (1) by 485 buses.

2. according to the described water supply installation of claim 1, it is characterized in that: described PLC programmable logic controller (2) is collected from the information of water inlet end sensor (11), water side sensor (12), teletransmission pressure sensor (13), be dealt into district management center (14) by GPRS communication module (3), GPRS communication module (3) is the control command that sends of region of acceptance administrative center (14) also.

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