CN219119328U - High-level oil tank for power generation turbine unit - Google Patents

Abstract

The utility model belongs to the technical field of auxiliary equipment of a power generation turbine unit, and discloses a high-level oil tank for the power generation turbine unit, wherein an overflow port is arranged at the upper part of the high-level oil tank, and an inlet and an outlet are arranged at the lower part of the high-level oil tank; the inlet and outlet are communicated with an inlet and outlet pipe, and the inlet and outlet pipe is provided with a check valve and a stop valve which are connected in parallel; the high-level oil tank is provided with a visual bypass pipe, one end of the visual bypass pipe is communicated with the upper part of the high-level oil tank, and the other end of the visual bypass pipe is communicated with the lower part of the high-level oil tank; the visual bypass pipe is internally provided with a liquid level sensor which is in communication connection with the stop valve. The utility model can adjust the overflow amount of the high-level oil tank according to the amount, thereby reducing the energy consumption loss of the whole oil circuit system.

Description

High-level oil tank for power generation turbine unit

Technical Field

The utility model belongs to the technical field of auxiliary equipment of a power generation turbine unit, and particularly relates to a high-level oil tank for the power generation turbine unit.

Background

The 50MW power generation turbine unit of the factory originally adopts an internal main oil pump to supply power, and because of design defects and high failure rate, the power generation turbine unit adopts an external high-pressure oil pump to operate, and lubricating oil cannot be provided under the condition of power failure or high-pressure oil pump failure, so that a turbine and a generator bearing bush are damaged.

After the oil way system is modified, 1 high-level oil tank with the volume of 3 cubes is independently additionally arranged at the position of the turbine platform at the height of 4 meters, and oil is supplied to the high-level oil tank through a high-pressure oil pump under normal conditions, and high-level overflow is kept. The high-level oil tank is connected with a lubricating oil pipeline of the turbine unit, and provides a certain amount of lubricating oil for the unit in a self-flowing mode under the conditions of power failure or high-pressure oil pump failure and unit tripping, so that bearing bushes can be lubricated when the turbine rotor and the generator rotor are idle at a high rotating speed, and the bearing bushes are prevented from being damaged.

However, at present, the oil supply rate of the high-pressure oil pump to the high-level oil tank cannot be adjusted, which results in large overflow amount of the high-level oil tank, and thus energy consumption loss of the whole oil circuit system can be caused.

Disclosure of Invention

In order to solve the technical problems, the utility model discloses a high-level oil tank for a power generation turbine unit, which can adjust the overflow amount of the high-level oil tank according to the amount, thereby reducing the energy consumption loss of the whole oil circuit system.

The specific technical scheme of the utility model is as follows:

the upper part of the high-level oil tank is provided with an overflow port, and the lower part of the high-level oil tank is provided with an inlet and an outlet; the inlet and outlet are communicated with an inlet and outlet pipe, and the inlet and outlet pipe is provided with a check valve and a stop valve which are connected in parallel;

the high-level oil tank is provided with a visual bypass pipe, one end of the visual bypass pipe is communicated with the upper part of the high-level oil tank, and the other end of the visual bypass pipe is communicated with the lower part of the high-level oil tank;

the visual bypass pipe is internally provided with a liquid level sensor which is in communication connection with the stop valve.

The visual side pipe can enable a worker to clearly see the quantity of lubricating oil in the high-level oil tank, when the quantity of lubricating oil in the high-level oil tank is too much, the stop valve can be manually closed, and the stop valve can be controlled to be closed through the liquid level sensor, so that lubricating oil can only enter the high-level oil tank through the throttle hole of the one-way valve, and therefore overflow quantity is reduced while the high-level oil tank is always in a full tank state.

Preferably, the upper pipe opening of the visual bypass pipe is lower than the position of the overflow port relative to the bottom surface of the high-level oil tank.

The overflow port can ensure that lubricating oil cannot overflow the high-level oil tank.

Preferably, the overflow port is communicated with an overflow pipeline, and the high-level oil tank is communicated to the high-pressure oil pump through the overflow pipeline;

the overflow pipeline is provided with a peeping mirror.

When the high-level oil tank is full, the peep sight glass can observe whether the lubricating oil in the high-level oil tank is full.

Preferably, the lower part of the high-level oil tank is also provided with a sewage outlet.

The drain outlet can regularly drain the lubricating oil with too high viscosity which is deposited at the bottom of the high-level oil tank.

Preferably, the bottom surface of the high-level oil tank is a slope surface which is obliquely arranged relative to the horizontal plane;

the inlet and outlet and the sewage outlet are both positioned at the bottom of the slope.

The slope can enable the lubricating oil in the high-level oil tank to flow intensively, so that the lubricating oil can be discharged better.

Preferably, a breather valve is arranged at the top of the high-level oil tank.

The breather valve can isolate the high-level oil tank from the atmosphere in a certain pressure range and can be communicated with the atmosphere when the pressure range is exceeded or undershot, so that the high-level oil tank is prevented from being damaged due to overpressure or vacuum, and meanwhile, the evaporation loss of lubricating oil is reduced.

Preferably, the high-level oil tank is further provided with a circulating pipeline, one end of the circulating pipeline is communicated with the upper part of the high-level oil tank, and the other end of the circulating pipeline is communicated with the lower part of the high-level oil tank;

an auger is arranged in the circulating pipeline and is provided with a motor for driving the auger to rotate;

the liquid level sensor is in communication connection with the motor.

When more lubricating oil is in the high-level oil tank, the auger can be started, so that the lubricating oil can circularly flow in the high-level oil tank, and the lubricating oil is prevented from deteriorating.

Compared with the prior art, the utility model can well adjust the overflow amount to avoid energy consumption waste, and on the basis, the utility model can realize manual or automatic overflow amount adjustment; in addition, the utility model can realize the internal circulation movement of the lubricating oil in the high-level oil tank, thereby avoiding the deterioration of the lubricating oil.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a schematic view of a slope in an embodiment of the present utility model;

fig. 3 is a schematic diagram of a control system according to an embodiment of the utility model.

In the figure: 1-a high-level oil tank; 2-overflow port; 3-import and export; 4-a one-way valve; 5-a stop valve; 6-a visual bypass tube; 7-scope; 8-a sewage outlet; 9-slope; 10-breathing valve; 11-a circulation pipe; 12-auger.

Detailed Description

In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the following specific embodiments.

As shown in fig. 1 to 3, a high-level oil tank 1 for a power generation turbine unit is provided, wherein an overflow port 2 is arranged at the upper part of the high-level oil tank 1, and an inlet and outlet 3 is arranged at the lower part of the high-level oil tank; an inlet and outlet pipeline is communicated with the inlet and outlet 3, and is provided with a check valve 4 and a stop valve 5 which are connected in parallel; the high-level oil tank 1 is provided with a visual bypass pipe 6, one end of the visual bypass pipe 6 is communicated with the upper part of the high-level oil tank 1, and the other end of the visual bypass pipe is communicated with the lower part of the high-level oil tank 1; a liquid level sensor is arranged in the visual bypass pipe 6 and is in communication connection with the stop valve 5.

In this embodiment, when the high-pressure oil pump is used for supplying oil, the first condition is that the stop valve 5 is opened when the high-level oil tank 1 is short of oil, the high-pressure oil pump is used for supplying oil continuously into the high-level oil tank 1, and the second condition is that the stop valve 5 is closed when the lubricating oil in the high-level oil tank 1 reaches the position of the liquid level sensor, and oil can be continuously and slowly supplied to the high-level oil tank 1 through the orifice of the one-way valve 4.

When the power is lost or the high-pressure oil pump fails, the high-level oil tank 1 is full of oil, the stop valve 5 is in a closed state, and the lubricating oil in the high-level oil tank 1 supplies oil to the steam turbine unit through the one-way valve 4 under the dead weight condition.

After the power supply is restored or the high-pressure oil pump is removed from the fault, the high-level oil tank 1 is supplied with oil under the first condition and the second condition.

In this embodiment, there is a controller that can receive and process the data fed back by the liquid level sensor, so as to transmit the processed information to the stop valve 5, so as to realize the opening and closing of the stop valve 5. The controller may be a single chip microcomputer based on STC89LE 52.

In this embodiment, the visible bypass pipe 6 may be made of high-strength glass or high-strength transparent plastic.

Further, with respect to the bottom surface of the high-level oil tank 1, the upper pipe opening of the visible bypass pipe 6 is lower than the position where the overflow port 2 is located.

Based on the overflow pipe, the overflow port 2 is communicated with an overflow pipe, and the high-level oil tank 1 is communicated to a high-pressure oil pump through the overflow pipe; the overflow pipe is provided with a scope 7.

This allows the oil amount of the lubricating oil to be visually observed through scope 7.

For better use of the embodiment, the lower part of the high-level oil tank 1 is also provided with a drain outlet 8.

Generally, a drain pipe is arranged at the drain outlet 8, and is provided with a control valve, so that the drain is realized by switching the control valve.

For better use of the embodiment, the bottom surface of the high-level oil tank 1 is a slope surface 9 which is obliquely arranged relative to the horizontal plane; the inlet and outlet 3 and the sewage outlet 8 are both positioned at the bottom of the slope surface 9.

When the inlet and outlet 3 and the drain outlet 8 are both positioned at the bottom of the slope, the lubricating oil can be discharged as much as possible in the process of discharging the lubricating oil.

For better use of the present embodiment, the top of the high-level tank 1 is provided with a breather valve 10.

On the basis of the embodiment, the high-level oil tank 1 is further provided with a circulating pipeline 11, one end of the circulating pipeline 11 is communicated with the upper part of the high-level oil tank 1, and the other end of the circulating pipeline is communicated with the lower part of the high-level oil tank 1; an auger 12 is arranged in the circulating pipeline 11, and the auger 12 is provided with a motor for driving the auger to rotate; the liquid level sensor is in communication connection with the motor.

Likewise, the motor is controlled by a controller.

As with the visual bypass 6, the visual bypass 6 and the circulation line 11 are filled simultaneously as lubricant accumulates in the higher tank 1. When the high-level oil tank 1 reaches the position of the liquid level sensor, the motor is started, so that the lubricating oil at the upper part of the high-level oil tank 1 is output to the lower part of the high-level oil tank 1 through the power of the auger 12, or the lubricating oil at the lower part of the high-level oil tank 1 is output to the upper part of the high-level oil tank 1 through the power of the auger 12, and the internal circulation of the lubricating oil is realized.

It will be appreciated that the lubricating oil should completely fill the circulation line 11 before the auger 12 is started. Thereby providing fluidity for the lubricating oil well and avoiding the deterioration of the lubricating oil caused by long-time unused lubricating oil.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that the above-mentioned preferred embodiment should not be construed as limiting the utility model, and the scope of the utility model should be defined by the appended claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.

Claims (7)

1. The high-level oil tank for the power generation turbine unit is characterized in that an overflow port is arranged at the upper part of the high-level oil tank, and an inlet and an outlet are arranged at the lower part of the high-level oil tank; the inlet and outlet are communicated with an inlet and outlet pipe, and the inlet and outlet pipe is provided with a check valve and a stop valve which are connected in parallel;

the high-level oil tank is provided with a visual bypass pipe, one end of the visual bypass pipe is communicated with the upper part of the high-level oil tank, and the other end of the visual bypass pipe is communicated with the lower part of the high-level oil tank;

the visual bypass pipe is internally provided with a liquid level sensor which is in communication connection with the stop valve.

2. A high-level tank for a power turbine unit as claimed in claim 1, wherein the upper pipe opening of the visible bypass pipe is located lower than the overflow opening with respect to the bottom surface of the high-level tank.

3. The high-level oil tank for the power generation turbine unit according to claim 1, wherein the overflow port is communicated with an overflow pipeline, and the high-level oil tank is communicated with a high-pressure oil pump through the overflow pipeline;

the overflow pipeline is provided with a peeping mirror.

4. A high-level oil tank for a power generation turbine unit as set forth in claim 1, wherein a drain is further provided at a lower portion of the high-level oil tank.

5. The high-level oil tank for a power generation turbine set as set forth in claim 4, wherein a bottom surface of the high-level oil tank is a slope surface arranged obliquely with respect to a horizontal plane;

the inlet and outlet and the sewage outlet are both positioned at the bottom of the slope.

6. A high-level oil tank for a power generation turbine set as claimed in claim 1, wherein a breather valve is provided at the top of the high-level oil tank.

7. A high-level oil tank for a power generation turbine unit as set forth in claim 1, wherein the high-level oil tank is further provided with a circulation pipe, one end of which is communicated with an upper portion of the high-level oil tank, and the other end of which is communicated with a lower portion of the high-level oil tank;

an auger is arranged in the circulating pipeline and is provided with a motor for driving the auger to rotate;

the liquid level sensor is in communication connection with the motor.

Images