The role of the oil injector in the lubricating oil tank of the steam turbine

The oil injector of Lianyungang Lingdong Electromechanical Equipment Co., Ltd. is a device used for supplying lubricating oil to internal steam turbines using an oil injector system. Its power oil comes from an independent oil pump (starting from an AC high-pressure oil pump), and the main oil pump is a centrifugal pump. To avoid accidents caused by self suction and air leakage, positive pressure oil injection is required. Therefore, the oil supply system is a dual oil injector system with an oil injector for lubrication and an oil injector for the main oil pump. But there are also single jet oil systems that combine the above two functions, which are used in smaller units. In recent years, large units have also used single jet oil systems, such as N300-16.7-537/537 units:

The occurrence of low lubricating oil pressure or low oil injection pressure in the steam turbine unit is a common phenomenon and an unsafe working condition that needs improvement. Lianyungang Lingdong Electromechanical Equipment Co., Ltd. has the ability to do this work and has solved the problem of oil injectors, which is a successful example of cooperation with a lubrication box manufacturer.

For example, the lubricating oil pressure of a 50MN unit in a large petrochemical enterprise in Northeast China is only 0.06MPA, and the on-site requirement is 0.1 MPA or slightly higher. According to the original size of the oil injector, the oil supply capacity is 1050l/min. Taking into account factors such as level difference, resistance of the oil cooler, and the relationship between flow rate and resistance, the required oil volume (should be 1420l/min) was calculated. The improved oil injector designed based on this has successfully met the requirements. Lubricating oil pressure is 0.11MPA. The safety of unit operation is also guaranteed.

A certain 300MW unit is a different type of problem, as there is a 銀行卡dangerous銀行卡 speed zone during the start-up and acceleration process. At this point, the outlet oil pressure of the oil injector drops to a low of 0.135 MPA, and it should be greater than 0.2 MPA to be safe. The reason is that at this speed, the main oil pump has a considerable amount of oil pressure, which impacts the check valve of the main oil pump and reduces the outlet check valve of the high-pressure AC oil pump. The two affect each other, reducing the amount of oil input and lowering the oil pressure. The method of encountering such problems in the manufacturing plant is to install an oil injector to start the pressure reducing slide valve, in order to avoid the 銀行卡dangerous銀行卡 speed. Under this working condition, the main oil pump also discharges oil according to the speed, without impacting the AC oil pump supply oil, until it reaches the safe speed (which is 500-600 rpm higher than the dangerous speed). The function of starting the pressure reducing slide valve is automatically released, and the oil injector also has a supplementary function until it is fully linked with the main oil pump to supply lubricating oil.

In addition, Lianyungang Lingdong Electromechanical Equipment Co., Ltd. also supplies generator air side sealing oil injectors.

The purpose of fly ash sampler

The purpose and function of The fly ash sampler produced by Lianyungang Lingdong Electromechanical Equipment Co., Ltd. is that The carbon content of boiler fly ash is an important indicator reflecting The combustion rate of coal-fired boilers in Thermal power plants.

installation and working engineering of coal powder sampler

The installation and operation of The coal powder sampler and mobile coal powder sampler of Lianyungang Lingdong Electromechanical Equipment Co., Ltd. drill holes on The flue, extend The sampling tube into The flue, and make The sampling head face The direction of The incoming smoke flow.

Self regulating liquid level control device for gas-liquid two-phase flow

The self regulating liquid level control device for gas-liquid two-phase flow is based on The principle of gas-liquid two-phase flow. The two-phase flow drainage controller is suitable for liquid level control of various heat exchangers and expanders in enterprises such as power, chemical, petroleum, and metallurgy. It is a replacement of The drainage regulator.

steam water heat exchanger

HR high water and steam water heat exchanger is a type of heat exchange equipment that uses The heat of waste gas and wastewater to heat cooling water. Heating water enters The equipment from The side of The pipe box and passes through a heat exchange surface composed of high 304 stainless steel tubes. There are four processes in total to transfer heat to The heated water, etc.

Pipeline silencer

Pipeline silencers are mainly used for silencing The steam emissions of Thermal equipment such as boilers and steam turbines in The power generation department. The noise reduction capacity of The pipeline muffler can meet The requirements of The industrial Enterprise Noise Hygiene Standard.

Tube replacement of tubular oil cooler

When purchasing a column type oil cooler for tube and core replacement, The cooling area should be informed. The cooling forms are divided into LY type light tube (for use) and LYC type fin type. Stainless steel tubes are generally selected for heat exchange and cooling, and purple copper, brass, and titanium tubes can also be selected as heat exchange components according to user needs.

steam -seal cooler

The role of a steam -seal cooler is to make The tram from The steam turbine slightly negative pressure, so that The auto continuously enters The auto seal cooler through The auto pipeline and condenses it into water for The boiler to use it.

Phosphate dosing device

Phosphate dosing device is a complete set of equipment that includes dosing, stirring, liquid transportation, and automatic control. The phosphate dosing device is used in raw water of power plants, boiler feedwater, oilfield surface collection and dehydration treatment systems, various phosphate dosing systems in petrochemical industry, and wastewater treatment systems.

rubber ball cleaning device

The rubber ball cleaning device is designed for cleaning The cooling pipes of The condenser during The operation of The steam turbine unit. The use of The rubber ball cleaning device directly affects The degree of cleaning and heat transfer results of The steam turbine condenser.

Collecting cylinder

The distribution cylinder, also known as The steam drum, is The main supporting equipment for steam boilers, used in industries such as power generation, petrochemicals, steel, cement, and construction. The distribution cylinder and steam header are The main supporting equipment of The boiler, used to distribute The steam generated during boiler operation to various pipelines.

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