A centrifugal compressor bearing online cleaning device and method

Abstract

The present invention discloses an online cleaning device for centrifugal compressor bearings, which comprises an insulation barrel, the insulation barrel is connected with a liquid outlet pipe, the end of the liquid outlet pipe is connected with a plunger metering pump, the liquid outlet pipe is connected with a first valve, the end of the plunger metering pump away from the liquid outlet pipe is connected with an outlet pipe, and the outlet pipe is connected with a pressure gauge and a second valve. Compared with the prior art, the advantages of the present invention are: online cleaning of sludge on turbine compressor bearings, lowering bearing temperature, reducing compressor downtime losses, and ensuring long-term operation of the turbine compressor. At the same time, the turbine compressor bearing online cleaning device can perform local cleaning according to the high-temperature position of the turbine compressor bearing, avoiding contamination of the lubricating oil due to a large amount of cleaning oil injected.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal compressors, and in particular to an online cleaning device and method for a centrifugal compressor bearing bush. Background Art

[0002] During long-term operation of centrifugal compressors, carbon deposits, sludge, varnish and other substances are often formed inside the lubricating oil due to high lubricating oil temperature and oxidation. The sludge accumulates on the bearing surface and in the tiny oil pipe, causing the gap between the shaft and the bearing to become smaller, resulting in friction and temperature increase. When the bearing temperature reaches the critical value, it will affect the safe operation of the turbine compressor. If the machine is shut down for maintenance, it will affect product output and economic benefits. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an online cleaning device and method for centrifugal compressor bearings in view of the deficiencies raised in the above-mentioned background technology.

[0004] In order to solve the above technical problems, the technical solution provided by the present invention is: an online cleaning device for centrifugal compressor bearings, which includes an insulation barrel, the insulation barrel is connected to a liquid outlet pipe, the end of the liquid outlet pipe is connected to a plunger metering pump, the liquid outlet pipe is connected to a first valve, the end of the plunger metering pump away from the liquid outlet pipe is connected to an outlet pipe, and the outlet pipe is connected to a pressure gauge and a second valve.

[0005] Furthermore, before using the cleaning oil, take a sample of the turbine compressor lubricating oil, perform particle counting or filter membrane detection, calibrate the system sludge contamination level, and then first inject the same type of lubricating oil into the insulation barrel, heat it to a constant temperature of 50°C, and inject the lubricating oil into the turbine compressor bearing oil supply pipe through a plunger metering pump to ensure that this device can normally pump the lubricating oil to the bearing cleaning point, inject cleaning oil into the insulation barrel at 1%, heat it to a constant temperature of 50°C, start the plunger metering pump to inject cleaning oil into the oil supply pipe, add it three times, each time for 30 minutes, take a sample of the turbine compressor lubricating oil, perform particle counting or filter membrane detection, compare it with the calibrated system sludge contamination level, observe the bearing cleaning effect, observe the oil temperature drop, it is best to use a high-precision oil filter to continuously filter the oil tank lubricating oil to filter out the sludge that has been cleaned and detached.

[0006] After adopting the above structure, the present invention has the following advantages: online cleaning of sludge on the turbine compressor bearing, lowering the bearing temperature, reducing the compressor shutdown loss, and ensuring long-term operation of the turbine compressor. At the same time, the online cleaning device for the turbine compressor bearing can perform local cleaning according to the high-temperature position of the turbine compressor bearing to avoid contamination of the lubricating oil due to the large amount of cleaning oil injected. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1It is a structural diagram of the patent name of this invention.

[0008] As shown in the figure: 1. Insulated barrel, 2. Liquid outlet pipe, 3. First valve, 4. Plunger metering pump, 5. Pressure gauge, 6. Outlet pipe, 7. Second valve. DETAILED DESCRIPTION

[0009] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0010] Combined with Figure 1 A centrifugal compressor bearing online cleaning device comprises an insulation barrel 1, the insulation barrel 1 is connected with a liquid outlet pipe 2, the end of the liquid outlet pipe 2 is connected with a plunger metering pump 4, the liquid outlet pipe 2 is connected with a first valve 3, the end of the plunger metering pump 4 away from the liquid outlet pipe 2 is connected with an outlet pipe 6, the outlet pipe 6 needs to be externally connected to the turbine compressor bearing oil supply pipe, the outlet pipe 6 is connected with a pressure gauge 5 and a second valve 7, the pressure value of the extracted cleaning oil can be observed through the pressure gauge 5, and the flow rate can be adjusted through the valves on both sides.

[0011] In the specific implementation of the present invention, before using the cleaning oil, a sample of the lubricating oil of the turbine compressor is taken, and a particle count or filter membrane test is performed to calibrate the degree of sludge contamination of the system. Then, the same type of lubricating oil is first injected into the insulation barrel 1, heated to a constant temperature of 50°C, and the lubricating oil is injected into the oil supply pipe of the turbine compressor bearing through the plunger metering pump 4 to ensure that the device can normally pump the lubricating oil to the bearing cleaning point. The cleaning oil is injected into the insulation barrel 1 according to a volume ratio of 1%, heated to a constant temperature of 50°C, and the plunger metering pump 4 is started to inject the cleaning oil into the oil supply pipe. The addition is divided into three times, each time for 30 minutes, and a sample of the lubricating oil of the turbine compressor is taken, and a particle count or filter membrane test is performed. The sample is compared with the degree of sludge contamination of the calibration system, and the cleaning effect of the bearing is observed, and the oil temperature drop is observed. It is best to use a high-precision oil filter to continuously filter the lubricating oil in the oil tank to filter out the sludge that has fallen off after cleaning. At the same time, the present invention can control the injection amount of the cleaning oil, requiring the residual amount of the cleaning oil in the system to be 0.3%-0.5% of the total oil amount.

[0012] The present invention and its implementation methods are described above, and such description is not restrictive, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by it, and does not deviate from the purpose of the invention, and does not creatively design a structure and implementation method similar to the technical solution, they should all fall within the protection scope of the present invention.

Claims

1. A centrifugal compressor bearing online cleaning method, characterized in that: The device using this method comprises a heat preservation barrel (1), the heat preservation barrel (1) is connected to a liquid outlet pipe (2), the end of the liquid outlet pipe (2) is connected to a plunger metering pump (4), the liquid outlet pipe (2) is connected to a first valve (3), the end of the plunger metering pump (4) away from the liquid outlet pipe (2) is connected to an outlet pipe (6), and the outlet pipe (6) is connected to a pressure gauge (5) and a second valve (7); The cleaning method comprises the following steps: before using the cleaning oil, taking a sample of the lubricating oil of the turbine compressor, performing particle counting or filter membrane detection, calibrating the system sludge contamination degree, then firstly injecting the same type of lubricating oil into the insulation barrel (1), heating it to a constant temperature of 50°C, injecting the lubricating oil into the oil supply pipe of the turbine compressor bearing bush through the plunger metering pump (4), ensuring that the cleaning device can normally pump the lubricating oil to the bearing bush cleaning point, injecting the cleaning oil into the insulation barrel (1) according to 1% of the volume of the insulation barrel (1), heating it to a constant temperature of 50°C, starting the plunger metering pump (4) to inject the cleaning oil into the oil supply pipe, injecting it three times, taking a sample of the lubricating oil of the turbine compressor, performing particle counting or filter membrane detection, comparing it with the calibrated system sludge contamination degree, observing the bearing bush cleaning effect, observing the oil temperature drop, using a high-precision oil filter to continuously filter the oil tank lubricating oil to filter out the sludge that has fallen off after cleaning.

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