Bark pocket type self-pressure stabilizing device for fuel oil system

Abstract

The invention discloses a bark pocket type self-pressure stabilizing device for a fuel oil system. The bark pocket type self-pressure stabilizing device comprises an oil jar, and an inert gas chamber,wherein a flange is connected to an opening of a rubber air bag; an oil pump and a check valve are sequentially connected to the oil jar through a pipeline; one part of an outlet of the check valve is connected with a stokehold fuel oil system through a stokehold electric valve and a stokehold fuel pressure transmitter, and the other part is connected with an air bag electric valve; an outlet ofthe air bag electric valve is divided into two parts; one part is connected with a flange, and the other part is connected with the oil jar through an accident oil drain valve; an air bag pressure transmitter and an air bag spot manometer are sequentially arranged on a pipeline between the air bag electric valve and the flange; the stokehold fuel pressure transmitter, the air bag pressure transmitter, and an air chamber pressure transmitter are connected with an automatic control cabinet through cables; and the automatic control cabinet is used for controlling starting or stopping of the oil pump. Through the adoption of the bark pocket type self-pressure stabilizing device disclosed by the invention, a great deal of oil pump electricity consumption can be saved, the service life of the oil pump is prolonged, and the maintenance working capacity of fuel oil system wearing parts is reduced.

Description

technical field [0001] The invention relates to the field of thermal power boiler fuel system, in particular to a bladder type self-stabilizing device for the fuel system. 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 problem, the current p...

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Problems solved by technology

[0004] In order to solve the shortcomings and deficiencies of the prior art, a bladder type self-stabilizing device for the fuel system is provided. The principle is advanced and the structure is simple. The oil pressure of the system is automatically stabilized at the design value, which not only meets the conditions for the oil gun to be used for combustion at any time, but also meets the requirements for fuel pressure and fuel flow when the boiler is fed with oil for combustion within the set time (usually not more than 20 minutes). Requirements, to achieve the purpose of "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 can not only save a lot of power consumption of the oil pump, but also prolong the service life of the oil pump and reduce the wearing parts of the fuel system maintenance workload

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