Smart heating network integrated system and its control method

Abstract

The invention discloses an intelligent heat supply network integrated system and a control method of the intelligent heat supply network integrated system and relates to a city heating system and a control method of the city heating system. The system comprises a heat source, a heat supply dispatch initial station, a heat exchange station, a primary heat supply pipe network, a secondary heat supply pipe network and a building heat supply pipe network, a main control system, a primary controller, a secondary controller and a building controller are arranged, each stage of heat supply pipe network is provided with a heat meter, a pressure sensor, a temperature sensor and an electric adjusting valve, a circulation pump on the primary network and a circulation pump on the secondary network are respectively provided with a frequency converter, and the building controller, the primary controller and the secondary controller are connected with the main control system; the building controller is electrically connected with the electric adjusting valve of the building heat supply pipe network. The main control system obtains control parameters through the sensors on all the stages of pipe networks, and the working states of the heat supply pipe networks are adjusted and controlled according to the specific values between the parameters and designed values. According to the intelligent heat supply network integrated system, heat and water balance of the heat supply pipe networks is optimally controlled, no utilizable energy is wasted, and the intelligent heat supply network integrated system is green, capable of saving energy, environmentally friendly and beneficial for descendants.

Description

technical field [0001] The invention relates to an urban heating system and its control method. Specifically, it is a system that can optimally control the hydraulic balance of the heating pipe network, reduce the energy waste of heating, and enable heating users to obtain the same room temperature of 21-23°C. A smart heating network integrated system and its control method. Background technique [0002] We know that heating is the supply of heat. The advantages and disadvantages of a heating system are mainly reflected in the control response to the entire heating system, data cross analysis, historical data records, whether the quality and quantity adjustment of the heating system Being able to use it flexibly in a heating season is an important reflection of the advantages and disadvantages of the heating system and whether it is green and energy-saving heating. The existing heating network system for urban heating users includes the first station for heating dispatching...

AI Technical Summary

Problems solved by technology

When the water supply flow of the first station of heating dispatching and heat exchange station cannot meet the requirements or the water supply temperature changes, because the flow value of each building is a fixed value, it cannot be adjusted in time, and there will be problems in order to ensure the heating temperature of the heating users. In order to ensure the indoor temperature of all users, the indoor temperature of all users can only be guaranteed by providing excessive heat for heating users. When heating users appear centered on the heat exchange station, the room temperature of heating users decreases radially, and the heating users who rely on the heat exchange station will be very hot , and the room temperature of the heating user farthest from the heat exchange station is only about 18°C, which is not suitable for human living, and causes waste of energy for heating

Moreover, the heating control center (main control system) cannot collect and analyze the heating parameters of each heating building, such as supply and return water temperature, pressure, flow, etc., and cannot distribute heat energy more reasonably and effectively, resulting in energy waste

[0003] In each heating season, the heating control center knows the total heating area of ​​each heat exchange station, each main line, and the entire heating area in this heating season through geographic information or charging software, and can calculate the current required heat , because the terminal cannot be well controlled, the required heat must be provided in excess, the required heat cannot be reasonably requested to the heat source through the heating area, and the primary heating pipe network cannot be changed at any time under different outdoor temperatures , the secondary network, and the heat supply of buildings cannot reach the balance between supply and demand

Images