Fault diagnosis and alarm method for automatic water supplementing and pressure stabilizing system of secondary network of heat exchange unit

Abstract

The invention provides a fault diagnosis and alarm method for an automatic water supplementing and pressure stabilizing system of a secondary network of a heat exchange unit, and relates to the technical field of heat supply pipe networks. The method comprises the steps of setting a continuous operation time threshold value of a water supplementing pump, setting the upper limit and the lower limit of a secondary water return pressure threshold value, and acquiring operation state information of a circulating pump; and if the circulating pump is in an operation state, acquiring the operation state of the water supplementing pump, the accumulated flow of a water supplementing meter and the secondary water return pressure, and based on the operation state of the water supplementing pump, the accumulated flow of the water supplementing meter and comparison of the secondary water return pressure and the corresponding threshold value, diagnosing the fault of the pipe network. According to the method, the risk of the pipe network can be prevented, and meanwhile stable operation of the heat supply system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of heating pipe networks, in particular to a fault diagnosis and alarm method for the automatic water supply and constant pressure system of the secondary network of a heat exchange unit. Background technique [0002] The secondary circuit of the central heating pipe network heat exchange unit generally adopts the automatic constant pressure method of the water supply pump to meet the operating conditions. Automatically start to replenish water into the pipe network. When the constant pressure value of the water replenishment pump is reached, the water replenishment pump will automatically stop replenishing water into the pipe network. If the automatic water replenishment and constant pressure system fails, it will not be able to replenish water in the pipe network in time, which directly leads to the failure of hot water to be supplied to the corresponding floor, resulting in low room temperature for therma...

AI Technical Summary

Problems solved by technology

With the increase of heat exchange units year by year, the pipe network equipment is aging year by year, and various faults such as pipe network leakage and water pump pocket gas occur frequently. It is difficult to find abnormalities in a timely and accurate manner only by manual inspections one by one. conditions, which in turn lead to some avoidable losses or failures, such as damage to the water supply pump mechanism caused by long-term air stagnation, equipment flooding caused by long-term leakage, etc., which cannot guarantee the safe and stable operation of the heating system

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