A kind of energy-saving control mode of valve-controlled ultrasonic heat meter

Abstract

The invention discloses an energy-saving controlling mode of a valve control ultrasonic heat meter. The energy-saving controlling mode comprises a load controlling mode, a flow controlling mode and an energy controlling mode. The load controlling mode achieves room load and heat exchange balance according to room temperature and the temperature difference of a water inlet pipe and a water returning pipe. The flow controlling mode carries out configuration on flow according to the flow situation of a heat supply system and achieves hydraulic balance. The energy controlling mode carries out output limitation on energy according to the heat needed by the heat supply system. According to the energy-saving controlling mode of the valve control ultrasonic heat meter, heat contained in hot water can be sufficiently used, energy utilization rate is improved, flow requirements and heat requirements of all users are all met, heat waste is reduced, output limitation is conducted on energy, and the function of meeting user requirements and saving energy is achieved.

Description

technical field [0001] The invention relates to the technical field of energy-saving control of heat meters, in particular to an energy-saving control mode of a valve-controlled ultrasonic heat meter. Background technique [0002] The control mode of the current heat meter is relatively simple, and the indoor temperature can only be changed by manually adjusting the valve to change the hot water flow rate. The temperature adjustment accuracy is insufficient and cannot fully meet the user's comfort requirements. At the same time, ordinary heat meters cannot pay attention to the temperature difference between the water inlet pipe and the return pipe. If the flow rate is too large, the hot water will stay in the indoor radiator for a short time, and the heat exchange will not be sufficient, resulting in a small temperature difference between the water inlet pipe and the return pipe. During the water transmission process, there is continuous heat loss, and users cannot make full...

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Problems solved by technology

[0002] The control mode of the current heat meter is relatively simple, and the indoor temperature can only be changed by manually adjusting the valve to change the hot water flow rate. The temperature adjustment accuracy is insufficient and cannot fully meet the user's comfort requirements.

At the same time, ordinary heat meters cannot pay attention to the temperature difference between the water inlet pipe and the return pipe. If the flow rate is too large, the hot water will stay in the indoor radiator for a short time, and the heat exchange will not be sufficient, resulting in a small temperature difference between the water inlet pipe and the return pipe. During the water transmission process, there is continuous heat loss, and the user cannot make full use of the heat contained in the hot water, resulting in energy waste and reducing the energy utilization rate

[0003] In the heating network heating, due to the small resistance of some loops, the actual flow rate is greater than the design flow rate, and when the overall flow rate remains unchanged, the flow rate of other loops is insufficient, resulting in uneven heating and cooling; the user keeps changing the valve Adjusting the flow required by oneself also causes fluctuations in the flow of the entire heating system

The above conditions can lead to hydraulic imbalance in the heating system

And hydraulic imbalance is one of the main causes of heat energy waste

[0004] Using a heat network composed of ordinary heat meters, it is impossible to know the heat usage of each user in real time, and there is also a way to obtain the maximum heat supply required by the entire heat network, which will easily lead to too little heat transfer by the heat network to meet the needs of users; It is also easy to cause the heat network to transmit too much heat, resulting in energy waste

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