Spring-type self-pressure stabilization device for fuel system

Abstract

The invention discloses a spring-type self-pressure stabilization device for a fuel system. The spring-type self-pressure stabilization device comprises an oil tank and an oil storage tank. The oil tank is sequentially connected with an oil pump and a check valve through pipelines. One outlet of the check valve is connected with a boiler front fuel system through a boiler front electrically operated valve, and the other outlet of the check valve is connected with the bottom of the oil storage tank through an oil storage tank electrically operated valve. A boiler front pressure transmitter is arranged on a pipeline between the boiler front electrically operated valve and the boiler front fuel system. A travel switch, a high liquid level sensor, a low liquid level sensor, an oil storage tankpressure transmitter, the oil pump, the oil storage tank electrically operated valve, the boiler front electrically operated valve and the boiler front pressure transmitter are all connected with anautomatic control cabinet through separate cables, the automatic control cabinet is used for controlling the oil pump to be started or stopped and further controlling the oil storage tank electricallyoperated valve and the boiler front electrically operated valve to be turned on or off. By means of the spring-type self-pressure stabilization device for the fuel system, a large amount of oil pumppower consumption can be reduced, the service life of the oil pump is prolonged and the maintenance workloads of easily-damaged parts of the fuel system are lowered.

Description

technical field [0001] The invention relates to the technical field of fuel oil systems of thermal power boilers, in particular to a spring-type self-stabilizing device for fuel oil systems. Background technique [0002] When thermal power boilers are in an emergency state (such as key equipment failure) or low-load operation, oil guns need to be used for stable combustion. Therefore, the fuel system needs to be in a standby state at all times, which will require long-term operation of the oil pump. According to the estimation that the oil pump supplies oil to two boilers at the same time, the cumulative operating hours of the oil pump in the whole year exceed 6000 hours, but in fact the cumulative time of the annual oil gun operation is less than 200 hours on average, that is to say, the actual utilization rate of the oil pump is only 3.3 %, and 96.7% of the time is in no-load idling state, which will cause a great waste of electric energy. [0003] In response to this pro...

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Problems solved by technology

[0004] In order to solve the shortcomings and deficiencies of the prior art, a spring-type self-stabilizing device for the fuel system is provided, which has an advanced principle and a simple structure. The oil pressure of the front fuel system is automatically stabilized at the design value, which can not only meet the conditions that the oil gun can be used for combustion at any time, but also meet the pressure and flow requirements of the combustion-supporting fuel during the start-up of the oil pump (usually no more than 20 minutes), reaching " The oil pump does not need to be started during the normal operation of the boiler, and the oil pump is only started when oil needs to be put in", which not only saves a lot of power consumption of the oil pump, but also prolongs the service life of the oil pump and reduces the maintenance workload of the vulnerable parts of the fuel system

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