CN213300222U

CN213300222U - Intelligent control system of heat exchange station

Info

Publication number: CN213300222U
Application number: CN202021944437.8U
Authority: CN
Inventors: 陈流敏
Original assignee: Huichuang Electrical Equipment Manufacturing Co Ltd
Current assignee: Huichuang Electrical Equipment Manufacturing Co Ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-05-28
Anticipated expiration: 2030-09-08

Abstract

The utility model provides a heat exchange station intelligence control system mainly includes: the heat exchange station comprises a PLC (programmable logic controller), a frequency converter, an intelligent temperature controller, a sensor assembly, an HMI (human machine interface) monitoring system, a PID (proportion integration differentiation) controller and a GPRS (general packet radio service) communication module, wherein the PLC controller is used for collecting and processing relevant parameters in the heat exchange station in real time, the frequency converter is used for completing automatic frequency conversion control of an in-station circulating water pump and a water replenishing pump, and a TK6070 touch screen is adopted as a human-computer interface of the HMI monitoring system, so that observation is easy and the system is monitored more perfectly. This intelligence control system can adjust secondary side water supply temperature according to outdoor temperature's change, guarantees end user's indoor suitable, and the energy saving simultaneously realizes that the parameter that the well accuse room can long-range dispatch heating power station under the unmanned on duty's of heat exchange station, guarantees the thermodynamic balance of whole heat supply network, and heating system can the safe and reliable operation, and its uses is very extensive.

Description

Intelligent control system of heat exchange station

Technical Field

The utility model discloses the application relates to a heat transfer station intelligence control system belongs to heat transfer station intelligent control technical field.

Background

The heat exchange station is used for converting high-temperature hot water generated by the boiler room into hot water for users to use. Wherein, the heat exchange station can include: heat exchanger, circulating water pump, moisturizing pump, soft water tank, valve and various instruments etc.. In the prior art, the working process of the heat exchange station is as follows: the primary water supply output from the boiler room enters the heat exchanger by opening the electric regulating valve, the circulating water pump conveys the heating water to the heat exchanger simultaneously, so that the heating water is heated by the primary water supply to form secondary water supply, and the secondary water supply enters the water inlet of the user hot water pipeline from the heat exchanger under the action of the circulating water pump, so that the secondary water supply is conveyed to each user for use by the user hot water pipeline. Meanwhile, after the heat is dissipated, the secondary water used by the user flows out of a water outlet of the user hot water pipeline to form secondary return water; the secondary return water flows into the water inlet of the circulating water pump and then flows into the heat exchanger through the circulating water pump for reuse. Therefore, the water temperature of the secondary water supply cannot be adjusted according to the specific temperature of the external environment in the heat exchange station in the prior art, so that the heat received by a user in a high-temperature environment is the same as the heat received by the user in a cold-temperature environment. Thereby make the heat transfer station can not effectual the energy can not be saved, make heat transfer station heat supply quality relatively poor, and present heat transfer station control mostly is personnel field control, and the heat transfer station needs 24 hours to have personnel on duty, extravagant manpower and materials financial resources, simple PID control, extravagant energy, the heating is unstable, and the user is when experiencing, can take place the phenomenon that the temperature is neglected to hang down occasionally, and the fault handling of reporting to the police is untimely, easily causes the big risk of equipment damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to utilize mode that PLC controller and PID control adjust, GPRS network transmission combined together to adjust the secondary side water supply temperature in order to solve extravagant energy to outdoor temperature's change, heating quality is poor, unstable, easily damage equipment, malfunction alerting untimely and the on-the-spot collection consumes the heat transfer station intelligence control system of human cost scheduling problem.

The utility model provides a heat transfer station intelligence control system mainly includes the heat transfer station, and PLC controller, converter, intelligent temperature controller, sensor are constituteed, HMI monitored control system, PID controller and GPRS communication module, the PLC controller is used for gathering in real time and handling the relevant parameter in the heat transfer station, the converter is used for accomplishing the automatic frequency conversion control of circulating water pump, moisturizing pump in the station, HMI monitored control system's human-computer interface adopts the very new style vinylon TK6070 touch-sensitive screen, easily observes and the control of more perfect realization to the system.

The sensor composition comprises: pressure sensor, temperature sensor, flow sensor, level sensor. The sensor collects analog signals and sends the analog signals to the PLC, the signals collected in real time are compared with a set value of the system, and if the analog signals are smaller than the minimum value or larger than the maximum value and exceed a set range, alarm signals are generated.

The data collected by the PLC include: analog quantity parameters such as pressure and temperature, parameters such as temperature, pressure, water tank water level, electric regulating valve state, start-stop state of a water replenishing pump, circulating pump current, voltage and alarm in the station are acquired, displayed and uploaded to the HMI monitoring system through the PLC.

And the PID controller is used for controlling and adjusting the control of each stage in the heat exchange station, and ensuring the indoor temperature of a user to be proper.

The stage control regulated by the PID controller comprises the following steps: automatic control of a circulating water pump and a water replenishing pump, water level control of a water tank, power failure and water cut-off control of a system, over-temperature, over-pressure and low-pressure protection control and chain start-stop switching control are completed through a PLC and a frequency converter.

The intelligent temperature controller is used for monitoring and displaying real-time change of outdoor temperature, so that the flow of the electric regulating valve is regulated according to temperature change to control the primary water supply amount, the water temperature of secondary water supply is controlled by controlling the amount of the primary water supply amount, and corresponding water level, water amount, pressure and temperature in a station are regulated, and automatic control of the circulating water pump and the water replenishing pump is realized.

The GPRS communication module assembly comprises a GPRS network, a cloud server and a user side.

The user side comprises user terminal equipment such as a mobile phone APP, a computer and a central control room.

The utility model provides a heat transfer station intelligence control system passes through the temperature of PLC controller in with the station, pressure, the water tank water level, the electric control valve state, the start-stop state of moisturizing pump, the circulating pump electric current, voltage, the warning isoparametric passes through PLC collection, show and upload among the HMI monitored control system, the real-time change of the outdoor temperature that the system rethread intelligence temperature controller shows, the flow of control electric control valve is with the once water supply water yield of control heat transfer station, and the temperature that the secondary supplied water is controlled through what of the water yield of once supplying water of control, and adjust corresponding water tank water level, the water yield, pressure, the temperature in the station, circulating water pump, the automatic control of moisturizing pump, the effectual energy that has saved the heat transfer station, and the heat supply quality at heat transfer station has been improved.

The adjusting system of the heat exchange station adopts PID control, so that the proper temperature in a user room is ensured; the automatic control of the circulating water pump and the water replenishing pump is completed through the PLC and the frequency converter; controlling the water level of the water tank; controlling the system to stop water when power is cut off; the system comprises overtemperature, overpressure and low-voltage protection control and linkage start-stop switching control, and realizes real-time alarm on faults of the system. This intelligence control system is when outdoor temperature variation, ability automatically regulated heating temperature, the heat is saved, user temperature control is constant temperature, user experience is effectual, thereby realize system automatically regulated, realize heat exchange station unmanned on duty, manpower, material resources and financial resources have been saved, the energy has been practiced thrift, and can realize storing historical operating data and the function to equipment automatic protection, implement remote alarm function, when equipment breaks down, PLC passes through the GPRS network and uploads alarm signal to high in the clouds server and storage, high in the clouds server sends for cell-phone user end APP through the Internet, real-time remote alarm, relevant staff can receive alarm information at once, use very extensively.

Drawings

Fig. 1 is the utility model provides a heat exchange station intelligence control system work flow chart.

Detailed Description

Referring to fig. 1, the overall flow chart of the heat exchange station intelligent control system provided by the present invention is shown. The intelligent control system of the heat exchange station comprises the heat exchange station, a PLC (programmable logic controller) 1, a frequency converter 2, an intelligent temperature controller 3, a sensor assembly 4, an HMI (human machine interface) monitoring system, a PID (proportion integration differentiation) controller 6 and a GPRS (general packet radio service) communication module 7 which are divided into a field layer, a control layer and a management layer, wherein the field layer mainly has the functions of acquisition of operating parameters such as temperature, pressure, flow and the like and execution of a process, the control layer mainly has the functions of data operation and control, the management layer is arranged in a control room and is responsible for remote data collection and reading and remote control and stores and analyzes the operating data of each station, the field layer comprises a temperature sensor 41, a pressure sensor 42, a flow sensor 43, a liquid level sensor 44, an electric valve, an electronic liquid level meter, a circulating water pump and the frequency converter 2 for driving the circulating water pump, the intelligent temperature controller 3, the control layer comprises, and the PID controller 6 and the management layer comprise a network equipment GPRS communication module 7 and an alarm 8.

In the control process, a large amount of physical quantity, such as analog quantity parameters of pressure, temperature and the like, needs to be acquired, the parameters are acquired and processed in real time through the PLC 1, and are displayed and uploaded to the HMI monitoring system, and the touch screen human-computer interface 5 of the HMI monitoring system is provided with the newest vinylon TK6070 touch screen which has strong functions, so that the system can be monitored and observed more perfectly.

Wherein GPRS communication module constitutes including GPRS network and high in the clouds server, the user side includes cell-phone APP, the computer, user terminal equipment such as well accuse room, PLC controller 1 control, concentrate all control points in the station in PLC controller 1, the touch-sensitive screen of connecting carries out parameter modification or control to field device through PLC controller 1, can realize circulating water pump and electric valve's control completely, pressure and flow around PLC controller 1 measures circulating water pump, adjust circulating water pump's rotational speed according to setting for pressure and flow, circulating water pump's power consumption and rotational speed are the proportional, the rotational speed is lower, power consumption is few more, thereby the rotational speed that utilizes dynamic adjustment water circulating pump saves the electric energy. The supply return water temperature of secondary network can reflect user's actual temperature value, the real-time change of the outdoor temperature that the needs temperature value of secondary network passes through 3 monitoring of intelligent temperature controller and shows, so that adjust electric control valve's flow according to the temperature variation and with the control once water supply water yield, and the temperature of secondary water supply is controlled through how much of the water yield of controlling once water supply, when the external temperature of heat exchange station is higher, reduce the water yield of once water supply so that the temperature of secondary water supply descends, the effectual energy of changing the station of having saved, and the heat transfer quality of heat exchange station has been improved.

The automatic control of the circulating water pump and the water replenishing pump is realized by adjusting the water level, the water quantity, the pressure and the temperature in the station of the corresponding water tank. The heat exchange station site transmits the operation information of the site to the cloud server for storage and analysis through the GPRS communication module 7, the cloud server sends the operation information to the mobile phone user side APP or the computer central control room through the Internet to be capable of calling historical curves and historical reports, and the operation client side can be used for a dispatcher to observe data implemented in the station and conduct remote operation.

The low-voltage switch system directly knows the operation condition of equipment, controls the equipment, handles emergencies and the like, and the automatic control system of the unattended heat exchange station mainly completes the functions of data acquisition, automatic control, parameter storage, real-time monitoring, historical trend, fault alarm and the like. And the PID controller is used for controlling and adjusting the control of each stage in the heat exchange station, and ensuring the indoor temperature of a user to be proper. The adjusting system of the heat exchange station adopts PID control to ensure that the indoor temperature of a user is proper, wherein the control of each stage regulated by the PID controller 6 comprises the following steps: the automatic control of a circulating water pump and a water replenishing pump, the water level control of a water tank, the power failure and water cut-off control of a system, the overtemperature, overpressure and low-pressure protection control and the interlocking start-stop switching control are completed through a PLC (programmable logic controller) 1 and a frequency converter 2; and real-time alarm is realized for the fault. The alarm device has the functions of pipe network overpressure alarm, temperature overtemperature alarm, water tank high and low water level alarm and water pump fault alarm lamp protection.

When equipment fails, the PLC uploads an alarm signal to the cloud server through the GPRS network and stores the alarm signal, the cloud server sends the alarm signal to a mobile phone user side APP through the Internet, real-time remote alarm is carried out, related workers can receive the alarm information immediately, the intelligent control system can adjust the secondary side water supply temperature according to outdoor temperature changes, indoor suitability of a terminal user is guaranteed, and meanwhile energy is saved; the central control room can remotely schedule the parameters of the heat station under the unattended condition of the heat exchange station, the heat balance of the whole heat supply network is ensured, the heat supply system can safely and reliably operate, and the application of the central control room is very wide.

Claims

1. Heat exchange station intelligence control system, its characterized in that mainly includes: the heat exchange station comprises a PLC (programmable logic controller), a frequency converter, an intelligent temperature controller, a sensor assembly, an HMI (human machine interface) monitoring system, a PID (proportion integration differentiation) controller and a GPRS (general packet radio service) communication module, wherein the PLC controller is used for collecting and processing relevant parameters in the heat exchange station in real time, the frequency converter is used for completing automatic frequency conversion control of an in-station circulating water pump and a water replenishing pump, and a TK6070 touch screen is adopted as a human-computer interface of the HMI monitoring system, so that observation is easy and the system is monitored more perfectly.

2. The intelligent control system of a heat exchange station of claim 1, wherein the sensor assembly comprises: pressure sensor, temperature sensor, flow sensor, level sensor.

3. The intelligent control system of a heat exchange station of claim 1, wherein the data collected by the PLC includes: analog quantity parameters such as pressure and temperature, parameters such as temperature, pressure, water tank water level, electric regulating valve state, start-stop state of a water replenishing pump, circulating pump current, voltage and alarm in the station are acquired, displayed and uploaded to the HMI monitoring system through the PLC.

4. The intelligent control system of a heat exchange station according to claim 1, wherein the PID controller is used for controlling and adjusting the control of each stage in the heat exchange station to ensure the proper temperature in the user room.

5. The intelligent control system of a heat exchange station according to claim 4, wherein the stage control regulated by the PID controller comprises: automatic control of a circulating water pump and a water replenishing pump, water level control of a water tank, power failure and water cut-off control of a system, over-temperature, over-pressure and low-pressure protection control and chain start-stop switching control are completed through a PLC and a frequency converter.

6. The intelligent control system of a heat exchange station of claim 1, wherein the intelligent temperature controller is used for monitoring and displaying real-time change of outdoor temperature, so as to adjust the flow of the electric regulating valve according to the temperature change to control the water amount of primary water supply, control the water temperature of secondary water supply by controlling the amount of the water amount of the primary water supply, and adjust the corresponding water level of the water tank, the water amount, the pressure, the temperature in the station, and automatically control the circulating water pump and the water replenishing pump.

7. The intelligent control system of a heat exchange station according to claim 1, wherein the GPRS communication module comprises a GPRS network, a cloud server and a user side.

8. The intelligent control system of a heat exchange station according to claim 7, wherein the user terminal comprises user terminal equipment such as a mobile phone APP, a computer, a central control room and the like.