CN203847180U - Device for online improvement of steam turbine oil demulsibility - Google Patents

Abstract

A device for improving the degree of emulsification of steam turbine oil on-line, including an oil inlet valve connected to the oil tank of the turbine, and an oil supply valve connected in parallel with the oil inlet valve. The oil port is connected, the oil outlet of the oil suction filter is connected to the oil suction port of the oil pump motor, the oil outlet of the oil pump motor is connected to the oil inlet of the demulsifier, the oil outlet of the demulsifier is connected to the oil inlet of the coarse filter, The oil outlet of the coarse filter is connected to the oil inlet of the fine filter, the oil outlet of the fine filter is connected to the outlet of the device through the oil outlet valve, and the outlet of the device is connected to the oil tank of the steam turbine; Substance adsorption filter element; the utility model improves the degree of demulsification of steam turbine oil by adding a demulsifier to ensure that the demulsification index of the operating oil meets the standard requirements, and at the same time adds an online oil replenishment function, so that the oil replenishment operation does not need an external oil filter , more convenient.

Description

A device for improving the degree of emulsification of steam turbine oil on-line

technical field

The utility model belongs to the technical field of on-line oil quality regeneration and filtration of steam turbine oil, in particular to a device for improving the demulsification degree of steam turbine oil on-line.

Background technique

The degree of demulsification is an important performance index of steam turbine oil, which indicates the separation ability of oil and water. When the degree of emulsification of the turbine oil exceeds the standard, if the moisture contained in the turbine oil reaches saturation, the oil will be emulsified due to the presence of surface active substances in the oil that can cause oil emulsification and the stirring effect of the oil in the system circulation , oil emulsification will not only destroy the film-forming and extreme-pressure properties of the oil, seriously affect the lubricating performance of the oil, and endanger the safe operation of the steam turbine, but also the water in the emulsified state of the oil will accelerate the deterioration of the oil quality, and will also cause metal surface damage. Occurrence of corrosion. Therefore, it is required that the turbine oil should have good performance of separating from water.

At present, when the degree of demulsification of steam turbine oil exceeds the standard in operation, it is generally solved by adding a demulsifier to the oil, but there are several problems in adding a demulsifier: 1) It is difficult to control the amount of the additive. A small amount of additives cannot achieve the purpose of treatment and cannot change the emulsification state, and a large amount of additives will lead to more serious emulsification of steam turbine oil. 2) The demulsifier is easy to consume. Since the demulsifier is easy to consume, the demulsifier will be gradually removed with the dehydration of the operating oil after adding, so the amount of demulsifier in the oil will decrease in a short period of time, and the emulsification problem will reappear, and a second supplement is required . 3) It is more difficult to control the dosage of the second addition, and adding multiple times will make the composition of the operating oil complicated.

Contents of the invention

In order to solve the above-mentioned problems in the prior art, the purpose of this utility model is to provide a device for improving the degree of demulsification of steam turbine oil on-line, which can process the turbine oil on-line during the operation of the generator set, and remove the surface in the oil. Active substances, so as to improve the demulsification performance of the oil, and at the same time, the utility model has the function of adding new oil, and can directly replenish oil to the oil system without connecting other oil filters, which is more convenient for oil replenishment.

In order to achieve the above object, the technical solution adopted in the utility model is:

A device for improving the degree of demulsification of steam turbine oil on-line, including an oil inlet valve 1 connected to the oil tank of the turbine, and an oil replenishment valve 2 connected in parallel with the oil inlet valve 1 to be connected to a barrel to be replenished. The oil valve 1 and the oil replenishment valve 2 are connected to the oil inlet of the oil suction filter 3, the oil outlet of the oil suction filter 3 is connected to the oil suction port of the oil pump motor 4, and the oil outlet of the oil pump motor 4 is connected to the oil inlet of the demulsifier 5 Connection, the oil outlet of demulsifier 5 is connected with the oil inlet of coarse filter 6, the oil outlet of coarse filter 6 is connected with the oil inlet of fine filter 7, and the oil outlet of fine filter 7 is connected through oil outlet valve 11 To the outlet of the device, the outlet of the device is connected to the steam turbine oil tank; the inlet and outlet of the oil pump motor 4 are equipped with a relief valve 9, the outlet of the oil pump motor 4 is equipped with a pressure alarm 8, and the demulsifier 5 is equipped with An adsorption filter element for removing surface active substances in oil; a differential pressure alarm 10 is connected in parallel to the fine filter 7 .

The oil pump motor 4 is a gear oil pump motor.

Compared with the prior art, the utility model has the following advantages:

1) There is no need to add a demulsifier. By improving the turbine oil demulsification device online, the surface active substances in the oil can be removed during operation, so as to ensure that the demulsification index of the operating oil always meets the requirements of the operating oil standard.

2) There is a two-stage alarm system. When the differential pressure of the fine filter is high and the filter blockage pressure rises, the differential pressure alarm 10 can alarm and shut down. When the differential pressure alarm 10 fails to alarm and shut down, the pressure of the entire system will Continue to rise, and pressure alarm 8 can report to the police and shut down. The two-stage alarm system can ensure the safe online operation of the device of the utility model.

3) The function of online oil replenishment is added. During the operation of the unit, there is no need for an external oil filter, and the oil can be directly replenished through the oil replenishment valve, and the new oil added has passed through the demulsifier, coarse filter and fine filter. Filtration ensures the quality of new oil added.

Description of drawings

The accompanying drawing is a schematic diagram of the device for improving the degree of emulsification of steam turbine oil on-line according to the present invention.

Detailed ways

The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment.

As shown in the accompanying drawings, the utility model is a device for improving the degree of demulsification of steam turbine oil on-line, including an oil inlet valve 1 connected to the oil tank of the turbine, and an oil inlet valve 1 connected in parallel with an oil tank to be replenished Oil supply valve 2, oil inlet valve 1 and oil supply valve 2 connected in parallel are connected to the oil inlet port of oil suction filter 3, the oil outlet port of oil suction filter 3 is connected to the oil suction port of oil pump motor 4, and the oil outlet port of oil pump motor 4 It is connected with the oil inlet of the demulsifier 5, the oil outlet of the demulsifier 5 is connected with the oil inlet of the coarse filter 6, the oil outlet of the coarse filter 6 is connected with the oil inlet of the fine filter 7, and the oil outlet of the fine filter 7 The oil outlet is connected to the outlet of the device through the oil outlet valve 11, and the outlet of the device is connected to the steam turbine oil tank; the inlet and outlet of the oil pump motor 4 are equipped with a relief valve 9, and the outlet of the oil pump motor 4 is installed with a pressure alarm 8 , the demulsifier 5 is equipped with an adsorption filter element for removing surface active substances in the oil; the fine filter 7 is connected in parallel with a differential pressure alarm 10 .

As a preferred embodiment of the present invention, the oil pump motor 4 is a gear oil pump motor.

As shown in the accompanying drawings, the working principle of the utility model is:

When the oil in the turbine oil tank passes through the oil pump motor 4 and reaches the demulsifier 5, the surface active substances in the oil are adsorbed by the filter element in the demulsifier 5, and the oil after the adsorption treatment enters the coarse filter 6. When the turbine oil reaches the coarse filter At 6 o'clock, the coarse filter element in the coarse filter 6 removes particles from the turbine oil, and the oil enters the fine filter 7, and the small particles in the turbine oil in the fine filter 7 are further removed, and the qualified oil enters the steam turbine through the oil outlet. oil tank. When the fine filter element in the fine filter 7 fails, the differential pressure of the fine filter 7 rises or the system pressure is too high, there is a safety risk, the differential pressure alarm 10 or the pressure alarm 8 will alarm, and the device will stop running to ensure the safe operation of the equipment.

When the oil level of the turbine oil tank is low and new oil needs to be added, close the oil outlet valve of the turbine oil tank and the oil inlet valve 1 of the device, connect the oil replenishment valve of the device with the oil barrel to be replenished, open the oil replenishment valve 2, and wait for replenishment The steam turbine oil just fills into the turbine oil tank through demulsifier 5, coarse filter 6 and fine filter 7.

Claims (2)

1. A device for improving the degree of demulsification of steam turbine oil on-line, characterized in that: it includes an oil inlet valve (1) connected to the turbine oil tank, and the oil inlet valve (1) is also connected in parallel with the oil barrel to be replenished oil supply valve (2), the oil inlet valve (1) and oil supply valve (2) connected in parallel are connected to the oil inlet port of the oil suction filter (3), and the oil outlet port of the oil suction filter (3) is connected to the oil pump motor (4 ), the oil outlet of the oil pump motor (4) is connected to the oil inlet of the demulsifier (5), the oil outlet of the demulsifier (5) is connected to the oil inlet of the coarse filter (6), The oil outlet of the coarse filter (6) is connected to the oil inlet of the fine filter (7), the oil outlet of the fine filter (7) is connected to the outlet of the device through the oil outlet valve (11), and the outlet of the device is connected to the turbine oil Oil tank; the outlet of the oil pump motor (4) is equipped with a pressure alarm (8), and the inlet and outlet are equipped with a relief valve (9); the fine filter (7) is connected in parallel with a pressure difference alarm (10), so The demulsifier (5) is equipped with an adsorption filter element for removing surface active substances in the oil. 2. The device for improving the degree of emulsification of steam turbine oil online according to claim 1, characterized in that: the oil pump motor (4) is a gear oil pump motor.