Control system for regulating valve of heat supply pipeline

Abstract

The heat supply pipeline regulating valve control system comprises a human-computer interface, a 4G DTU module, an electric valve PLC control box, an electric regulating valve and a temperature acquisition module, the human-computer interface and the first 4G DTU module are connected and arranged in a heat supply machine room, and the first 4G DTU module is connected with the second 4G DTU module and the third 4G DTU module through a 4G mobile network; the second 4G DTU module is connected with the first electric valve PLC control box and is arranged in the first building; the first electric control valve and the first temperature acquisition module are arranged in a water return pipe of a heat supply pipeline of the first building and are respectively connected with the first electric valve PLC control box; the third 4GDTU module is connected with the second electric valve PLC control box and is arranged in a second building; and the second electric control valve and the second temperature acquisition module are arranged in a water return pipe of a heat supply pipeline of the second building and are respectively connected with the second electric valve PLC control box.

Description

Technical Field

[0001] The utility model belongs to the technical field of remote control of electric control valves and relates to a control system for regulating valves of heating pipelines. Background Art

[0002] In northern regions, winter heating involves various public and civil buildings. There are various existing heating methods, such as centralized heating by thermal power companies, or individual heating in communities using equipment such as water source heat pumps. If the heating equipment operates improperly, it will not only affect the production efficiency of heating units, but also affect the use of heating objects, and even lead to the problem of substandard heating that is widely concerned by society. In such cases, heating energy conservation is particularly important. Saving energy can not only improve the economic benefits of heating companies, but also enable heating objects to receive better services. During centralized heating, there is often a situation of heat energy waste in many buildings. For example, in schools, at night, buildings such as experimental buildings and teaching buildings are not in use, and during the day, the temperature requirements in dormitory buildings also decrease. However, due to the centralized heating method, all buildings are heated in the same way, resulting in a large amount of heat energy loss. Content of the Utility Model

[0003] The utility model provides a control system for regulating valves of heating pipelines, which can solve the problem of heat energy waste caused by existing centralized heating.

[0004] The utility model provides a control system for regulating valves of heating pipelines, comprising: a human-machine interface, a first 4G DTU module, a second 4G DTU module, a first electric valve PLC control box, a first electric control valve, a first temperature acquisition module, a third 4G DTU module, a second electric valve PLC control box, a second electric control valve and a second temperature acquisition module; the human-machine interface is connected to the first 4G DTU module and both are arranged in a heating machine room. The first 4G DTU module is connected to the second 4G DTU module and the third 4G DTU module respectively through a 4G mobile network; the second 4G DTU module is connected to the first electric valve PLC control box and is arranged in a first building. The first electric control valve and the first temperature acquisition module are arranged in the return water pipe of the heating pipeline of the first building and are respectively connected to the first electric valve PLC control box; the third 4G DTU module is connected to the second electric valve PLC control box and is arranged in a second building. The second electric control valve and the second temperature acquisition module are arranged in the return water pipe of the heating pipeline of the second building and are respectively connected to the second electric valve PLC control box.

[0005] Furthermore, the first electric valve PLC control box and the second electric valve PLC control box have the same structure, both including a circuit breaker, a fuse, a transformer, a PLC controller, a first changeover switch and a second changeover switch; the power supply is sequentially connected to the circuit breaker and the fuse, and the fuse is respectively connected to the power input ends of the transformer and the PLC controller; the output end of the transformer is connected to the power input end of the electric control valve; the analog input end of the electric control valve is connected to the analog output end of the PLC controller; the analog output end of the electric control valve is connected to the analog input end of the PLC controller; the analog input and output common ends of the electric control valve are respectively connected to the 24V output end, the digital common end, the analog output common end and the analog input common end of the PLC controller; the positive pole of the temperature acquisition module is connected to the 24V output end of the PLC controller, and the negative pole is connected to the analog input end of the PLC controller; one ends of the first changeover switch and the second changeover switch are connected to the digital input end of the PLC controller, and the other ends are both connected to the 24V+ output end of the PLC controller; the communication port of the PLC controller is connected to the 485 communication port of the corresponding 4G DTU module.

[0006] Furthermore, the first changeover switch is used to switch between local control and remote control of the electric control valve; when the first normally open point of the first changeover switch is closed, the local control of the electric control valve is started. During local control, if the first normally open point of the second changeover switch is closed, the PLC controller will open the electric control valve to 100%. If the second normally open point of the second changeover switch is closed, the PLC controller will perform PID control on the opening angle of the electric control valve according to the temperature set inside it and the temperature feedback by the temperature acquisition module; when the second normally open point of the first changeover switch is closed, the remote control of the electric control valve is started, and the PLC controller will perform PID control on the opening angle of the electric control valve according to the parameters set by the human-machine interface and the temperature feedback by the temperature acquisition module. At this time, the second changeover switch is invalid.

[0007] Furthermore, indicator lights are also provided in both the first electric valve PLC control box and the second electric valve PLC control box, and the indicator lights are connected to the digital output end of the PLC controller.

[0008] Furthermore, the model of the PLC controller is YVE CPU124XP-2RAC / DC / RLY.

[0009] A control system for a heat supply pipeline regulating valve of the present utility model sets a human-machine interface and a first 4G DTU module in the heat supply machine room, respectively sets corresponding 4G DTU modules and electric valve PLC control boxes in different buildings, and sets an electric regulating valve and a temperature acquisition module in the return water pipe of the heat supply pipeline of the building, so as to separately control the heat supply effects of different buildings at different time periods. The local control and remote control of the electric regulating valve are switched by setting a first change-over switch. Brief Description of the Drawings

[0010] Figure 1 is a block diagram of a control system for a heat supply pipeline regulating valve of the present utility model;

[0011] Figure 2 is the circuit diagram of the electric valve PLC control box. Detailed Embodiment

[0012] As Figure 1 shown, a control system for a heat supply pipeline regulating valve includes: a human-machine interface, a first 4G DTU module, a second 4G DTU module, a first electric valve PLC control box, a first electric regulating valve, a first temperature acquisition module, a third 4G DTU module, a second electric valve PLC control box, a second electric regulating valve and a second temperature acquisition module; the human-machine interface is connected to the first 4G DTU module and both are set in the heat supply machine room, and the first 4G DTU module is respectively connected to the second 4G DTU module and the third 4G DTU module through a 4G mobile network; the second 4G DTU module is connected to the first electric valve PLC control box and is set in the first building, and the first electric regulating valve and the first temperature acquisition module are set in the return water pipe of the heat supply pipeline of the first building and are respectively connected to the first electric valve PLC control box; the third 4G DTU module is connected to the second electric valve PLC control box and is set in the second building, and the second electric regulating valve and the second temperature acquisition module are set in the return water pipe of the heat supply pipeline of the second building and are respectively connected to the second electric valve PLC control box.

[0013] As Figure 2 shown, the first electric valve PLC control box and the second electric valve PLC control box have the same structure, and both include a circuit breaker QF, a fuse FU, a transformer TR, a PLC controller, a first change-over switch SA1 and a second change-over switch SA2. The power supply is sequentially connected to the circuit breaker QF and the fuse FU, and the fuse FU is respectively connected to the power input ends of the transformer TR and the PLC controller.

[0014] The output terminal of the transformer TR is connected to the power input terminal of the electric control valve K1; the analog input terminal of the electric control valve K1 is connected to the analog output terminal IO of the PLC controller; the analog output terminal of the electric control valve is connected to the analog input terminal A of the PLC controller; the analog input and output common terminals of the electric control valve are respectively connected to the 24V output terminal M, the digital common terminal 1M, the analog output common terminal 3M and the analog input common terminal 2M of the PLC controller. The positive pole of the temperature acquisition module K2 is connected to the 24V+ output terminal L+ of the PLC controller, and the negative pole is connected to the analog input terminal C of the PLC controller. One end of the first changeover switch SA1 and the second changeover switch SA2 is connected to the digital input terminal of the PLC controller, and the other end is connected to the 24V+ output terminal L+ of the PLC controller. The communication port of the PLC controller is connected to the 485 communication port of the corresponding 4G DTU module.

[0015] During specific implementation, an indicator light HG1 is also provided in both the first electric valve PLC control box and the second electric valve PLC control box, and the indicator light HG1 is connected to the digital output terminal of the PLC controller. The model of the PLC controller is Yewell CPU124XP-2RAC / DC / RLY.

[0016] The specific operation process is as follows:

[0017] During specific implementation, the local control and remote control of the electric control valve K1 can be switched and controlled through the first changeover switch SA1. When the first normally open point of the first changeover switch SA1 is closed, the local control of the electric control valve is started. During local control, if the first normally open point of the second changeover switch SA2 is closed, the PLC controller will open the electric control valve to 100%. If the second normally open point of the second changeover switch SA2 is closed, the PLC controller will perform PID control on the opening angle of the electric control valve according to the temperature set inside and the temperature feedback by the temperature acquisition module. When the second normally open point of the first changeover switch SA1 is closed, the remote control of the electric control valve is started, and the PLC controller performs PID control on the opening angle of the electric control valve according to the parameters set by the human-machine interface and the temperature feedback by the temperature acquisition module. At this time, the second changeover switch SA2 is invalid.

[0018] Through the first 4G DTU module set in the heating machine room and the corresponding 4G DTU modules set in other buildings, the heating effects of different buildings at different time periods can be controlled separately.

[0019] The above are only the preferred embodiments of the present invention and are not intended to limit the idea of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A heating pipeline regulating valve control system, characterized in that: include: Human-machine interface, a first 4G DTU module, a second 4G DTU module, a first electric valve PLC control box, a first electric regulating valve, a first temperature acquisition module, a third 4G DTU module, a second electric valve PLC control box, a second electric regulating valve and a second temperature acquisition module; the human-machine interface is connected to the first 4GDTU module and both are arranged in a heating machine room, and the first 4GDTU module is connected to the second 4G DTU module and the third 4G DTU module respectively through a 4G mobile network; the second 4G DTU module is connected to the first electric valve PLC control box and is arranged in a first building, the first electric regulating valve and the first temperature acquisition module are arranged in the return pipe of the heating pipeline of the first building and are respectively connected to the first electric valve PLC control box; the third 4G DTU module is connected to the second electric valve PLC control box and is arranged in the second building, the second electric regulating valve and the second temperature acquisition module are arranged in the return pipe of the heating pipeline of the second building and are respectively connected to the second electric valve PLC control box.

2. The heating pipeline regulating valve control system according to claim 1, characterized in that: The first electric valve PLC control box and the second electric valve PLC control box have the same structure, and both include a circuit breaker, a fuse, a transformer, a PLC controller, a first conversion switch and a second conversion switch; the power supply is connected to the circuit breaker and the fuse in sequence, and the fuse is connected to the power input terminal of the transformer and the PLC controller respectively; The output end of the transformer is connected to the power input end of the electric control valve; the analog input end of the electric control valve is connected to the analog output end of the PLC controller; the analog output end of the electric control valve is connected to the analog input end of the PLC controller; the analog input and output common ends of the electric control valve are respectively connected to the 24V output end, digital common end, analog output common end and analog input common end of the PLC controller; the positive pole of the temperature acquisition module is connected to the 24V output end of the PLC controller, and the negative pole is connected to the analog input end of the PLC controller; one end of the first conversion switch and the second conversion switch are connected to the digital input end of the PLC controller, and the other ends are connected to the 24V+ output end of the PLC controller; the communication port of the PLC controller is connected to the 485 communication port of the corresponding 4G DTU module.

3. The heating pipeline regulating valve control system according to claim 2, characterized in that: The first conversion switch is used to switch the local control and remote control of the electric control valve; when the first normally open point of the first conversion switch is connected, the local control of the electric control valve is started. If the first normally open point of the second conversion switch is connected during local control, the PLC controller opens the electric control valve to 100%. If the second normally open point of the second conversion switch is connected, the PLC controller performs PID control on the opening angle of the electric control valve according to the temperature set inside it and the temperature fed back by the temperature acquisition module; when the second normally open point of the first conversion switch is connected, the remote control of the electric control valve is started, and the PLC controller performs PID control on the opening angle of the electric control valve according to the parameters set in the human-machine interface and the temperature fed back by the temperature acquisition module. At this time, the second conversion switch is invalid.

4. The heating pipeline regulating valve control system according to claim 2, characterized in that: The first electric valve PLC control box and the second electric valve PLC control box are also provided with indicator lights, which are connected to the digital output terminals of the PLC controllers.

5. The heating pipeline regulating valve control system according to claim 1, characterized in that: The model of the PLC controller is Yiwei CPU124XP-2R AC / DC / RLY.

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