Blast furnace blower lubrication system and debugging method thereof

Abstract

The application discloses a blast furnace blower lubricating system and a debugging method thereof, and relates to the technical field of a blower lubricating system, which comprises a lubricating oil tank, the lubricating oil tank is connected with an oil supply main pipe, and the oil supply main pipe comprises parallel pipelines, a cooler, a filter, parallel branch pipes and a check valve in sequence; in the parallel pipelines, one pipeline is provided with an oil pump and a valve, one pipeline is provided with a ball valve, a pre-valve pressure regulating valve and another ball valve in sequence, and a bypass stop valve is arranged on the last pipeline; in the parallel branch pipes, one pipeline is provided with a ball valve, a post-valve pressure regulating valve and a ball valve in sequence, and the other pipeline is provided with a bypass stop valve; the check valve at the outer end of the oil supply main pipe is connected with a unit bypass oil supply pipe, the unit bypass oil supply pipe is connected with each oil inlet branch pipe, lubricating oil is provided for bearing bushings of corresponding axial flow compressors, gearboxes and motors through the oil inlet branch pipes, and then the lubricating oil returns to the lubricating oil tank through an oil return main pipe, so that lubrication is realized. The method can achieve the effect of timely research and adoption of corresponding adjustment measures and shortening of the overall debugging time of the lubricating system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air blower lubrication system, in particular to a blast furnace air blower lubrication system and a debugging method thereof. BACKGROUND

[0002] The blast furnace air blower adopts an AV type axial flow compressor with full static blade adjustment, and the unit has high automation level and high matching degree. The unit is driven by a motor and connected by a diaphragm coupling. The thrust bearing is arranged at the air inlet side. The air blower mainly comprises an axial flow compressor, a gear box, a synchronous motor, a high-low voltage electric control system, a self-control system, a lubricating oil system (lifting oil), a static blade servo control system, an inlet and outlet pipeline system, a circulating cooling water system, a valve gas source control system and the like. The lubricating oil system mainly provides lubricating oil for the bearing bush of the axial flow compressor, the gear box and the motor, and is composed of a lubricating main oil pump, a direct current oil pump, a lubricating oil tank, a heater, a cooler, a filter, an oil circuit and a lifting oil pump.

[0003] However, the existing unit lubrication system is inconvenient to debug, which prolongs the debugging time and seriously affects the overall debugging progress, the accuracy of debugging and the safety and reliability of the unit operation. SUMMARY

[0004] The present application aims to provide a blast furnace air blower lubrication system, which can facilitate the debugging and timely find technical problems in the operation of the air blower lubrication system, so as to timely research and take corresponding adjustment measures, thereby shortening the overall debugging time of the lubrication system.

[0005] A blast furnace air blower lubrication system comprises a lubricating oil tank, which is connected to a main oil supply pipe. The main oil supply pipe comprises in sequence a parallel pipeline, a cooler, a filter, a parallel branch and a check valve.

[0006] In the parallel pipeline, one branch is provided with an oil pump and a valve, and one branch is provided in sequence with a ball valve, a pre-valve pressure regulating valve and another ball valve. One branch is provided with a bypass stop valve. In the parallel branch, one branch is provided in sequence with a ball valve, a post-valve pressure regulating valve and another ball valve. The other branch is provided with a bypass stop valve.

[0007] The outer end of the check valve of the main oil supply pipe is connected to a unit bypass oil supply pipe, and the unit bypass oil supply pipe is connected to each oil inlet branch pipe. Lubricating oil is supplied to the bearing bush of the corresponding axial flow compressor, gear box and motor through each oil inlet branch pipe, and then the lubricating oil returns to the lubricating oil tank through a main oil return pipe, thereby achieving lubrication.

[0008] Further, a lubricating oil return pipeline is connected to the main oil supply pipe at a position outside the check valve and higher than the lubricating oil tank. The other end of the lubricating oil return pipeline is connected to the lubricating oil tank. Two valves are arranged on the lubricating oil return pipeline, which are respectively located near one end of the main oil supply pipe and near the other end of the lubricating oil tank.

[0009] The application also aims to provide a blast furnace blower lubrication system debugging method, which forms a system debugging method and is convenient for timely finding technical problems in the operation of the blower lubrication system, thereby shortening the overall debugging time of the lubrication system.

[0010] A blast furnace blower lubrication system debugging method, characterized in that it comprises the following steps,

[0011] Step S10, lubrication pipeline purging: the lubricating oil pipeline oil supply main valve is removed, a temporary purging valve and a joint are installed outside the valve, temporary short pipes are installed on each inlet and return oil pipe of the blower, compressed air is connected to the purging head of the oil supply main pipe for purging, and sundries are discharged from the blowdown ball valve of the return oil main pipe;

[0012] Step S20, lubrication pipeline pressure test: a pressure test is performed using compressed air, the blowdown ball valve is closed, the test pressure is increased and held for a set time, and leakage is checked at the same time; after the end, the temporary purging valve and the joint are removed, and the oil supply main valve is restored; the blind plate of the lubricating oil tank return oil main pipe is removed, and a return oil filter screen is installed on the flange connection surface of the lubricating oil tank;

[0013] Step S30, cold-state debugging of the lubricating oil station: after cleaning the lubricating oil station, oil is added and the lubricating oil pump is started, and the working conditions of each component are checked;

[0014] Step S40, one-time flushing of the lubrication pipeline: one-time flushing of the pipeline is performed using the lubricating oil station, the filter core in the filter is removed, the pump is stopped for a period of time, the return oil filter screen is checked and replaced, and this process is repeated until there are no visible hard particles on the return oil filter screen;

[0015] Step S50, secondary flushing of the unit: the temporary short pipes in step S10 are gradually restored, the pump is stopped for a period of time, the return oil filter screen is checked and replaced, and this process is repeated until there are no visible hard particles on the return oil filter screen.

[0016] Further, in step S20, after removing the blind plate of the lubricating oil tank return oil main pipe, the blind plate is cut into a mesh shape, and the mesh blind plate and the filter screen are installed together on the flange connection surface of the lubricating oil tank; the return oil first passes through the mesh blind plate, and then passes through the filter screen into the lubricating oil tank.

[0017] Further, in step S30, the components checked include the heater in the lubricating oil tank, the double-cylinder filter and the double cooling device on the oil supply main pipe, the oil mist blower, and the jacking pump.

[0018] Further, in steps S40 and S50, a return oil pipeline is connected to the upper part of the lubricating oil tank at a position higher than the lubricating oil tank on the oil supply main pipe, and valves are installed on the oil supply main pipe side and the lubricating oil tank side of the return oil pipeline, respectively; the two valves are normally closed, and when the pump needs to be stopped, the two valves are opened to quickly return oil and shorten the pump stopping time.

[0019] Further, step S50 includes step S51: the compressor, gear box temporary short pipe is removed and the normal oil supply pipeline is restored, and the filter core in the filter is installed, and the pump is stopped for a period of time to check and replace the oil return filter screen and the oil supply filter core, until there is no visible hard particles on the oil return filter screen.

[0020] Further, step S50 includes step S52, oil station pressure regulating valve adjustment oil pressure is adjusted and flushed:

[0021] The bypass stop valve in parallel with the pre-valve pressure regulating valve is fully opened, the bypass stop valve in parallel with the post-valve pressure regulating valve is fully closed, the front and rear ball valves of the pre-valve pressure regulating valve are opened, the bypass stop valve in parallel with the pre-valve pressure regulating valve is gradually fully closed, the pre-valve pressure regulating valve is adjusted to set the pump outlet pressure to a value a, then the front and rear ball valves of the post-valve pressure regulating valve are opened, and the post-valve pressure regulating valve is adjusted to set the oil supply main pipe pressure to a value b.

[0022] Further, step S53, top-up oil pipe flushing is further included: the compressor top-up pump inlet oil return pipe is restored to the working state, the bearing box is not installed during the installation of the support shoe, so that the top-up oil pipe is synchronously flushed with the unit to ensure that the support shoe is not contaminated; thereafter, the top-up pump inlet valve is opened, the pump is started, and the top-up oil pipe is flushed.

[0023] Further, step S60, interlocking debugging is further included: the oil supply branch pipe and the oil supply main pipe are adjusted in pressure; the oil supply time of the high-level oil tank is tested after power failure; thereafter, the alarm value of the unit remote pressure switch is adjusted, and finally, the heater interlocking, the oil pump interlocking start-stop, the top-up pump interlocking and the fan flushing are debugged.

[0024] In summary, the present application has the following beneficial effects:

[0025] By adopting the on-site debugging method of the blast furnace blower lubricating system of the present application, technical problems occurring in the operation process of the blower lubricating system can be found in time, and corresponding adjustment measures can be taken in time;

[0026] Because the pump stopping and oil returning time is long, in order to avoid the waste of waiting time, a return pipeline is connected to the upper part of the lubricating oil tank at a position higher than the oil supply main pipe, and valves are respectively installed on the oil supply main pipe side and the lubricating oil tank side, the two valves are in a closed state at ordinary times, and when the pump needs to be stopped, the two valves are opened, so that the oil can be quickly returned and the pump stopping time is shortened. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the overall structure of the present application;

[0028] Figure 2 is a schematic diagram of the structure of the lubricating oil tank and the oil supply main pipe in the present application;

[0029] Figure 3 is a structural schematic diagram of the blast furnace blower part in the application. Embodiment

[0030] The specific embodiments of the application are further described below with reference to the accompanying drawings, which do not constitute a limitation on the application.

[0031] A blast furnace blower lubrication system, as shown in Figure 1 and Figure 2 , comprises a lubricating oil tank, which is communicated with an oil supply main pipe, the oil supply main pipe comprises four parallel pipelines, a double cooling device, a double cylinder filter, two parallel branch pipes, and a check valve in sequence.

[0032] In the four parallel pipelines, one pipeline is provided with an A oil pump and a valve, one pipeline is provided with a B oil pump and a valve, one pipeline is provided with a ball valve, a pre-valve pressure regulating valve, and another ball valve in sequence, and a bypass stop valve is arranged on the last pipeline. The outer end of the filter in the oil supply main pipe is communicated with the two parallel branch pipes. One pipeline is provided with a ball valve, a post-valve pressure regulating valve, and another ball valve in sequence, and a bypass stop valve is arranged on the other pipeline. The outer end of the two parallel branch pipes is connected to the check valve.

[0033] The blast furnace blower comprises an axial flow compressor, a gear box, and a motor. The outer end of the check valve of the oil supply main pipe is communicated with a unit bypass oil supply pipe. The unit bypass oil supply pipe is communicated with each oil inlet branch pipe and a lifting pump. A throttle valve is arranged on each oil inlet branch pipe. Lubricating oil is provided for the corresponding bearing of the axial flow compressor, the gear box, and the motor through each oil inlet branch pipe. Then the lubricating oil returns to the lubricating oil tank through an oil return main pipe, so as to realize lubrication.

[0034] As shown in Figure 1 , a lubricating oil return pipeline is communicated with the oil supply main pipe at a position outside the check valve and higher than the lubricating oil tank. The other end of the lubricating oil return pipeline is communicated with the lubricating oil tank. Two valves are arranged on the lubricating oil return pipeline, which are respectively located near one end of the oil supply main pipe and near the other end of the lubricating oil tank.

[0035] As shown in Figure 3 , the outer end of the unit bypass oil supply pipe is also communicated with a high oil tank. In the case of power failure and accident, the lubricating oil required for the idling of the unit is maintained when the unit is stopped. A valve is arranged on the unit bypass oil supply pipe to control the oil inlet to the high oil tank. For example, the oil inlet to the high oil tank is prohibited in normal times by communicating with the check valve, or the oil inlet to the high oil tank is realized by the small hole in the middle of the check valve or by the parallel bypass valve (the oil inlet is closed after completion), and the overflow port at the upper part of the high oil tank is used to flow out after being full, which is observed by a sight glass.

[0036] In the case of an accident, the oil supply pump stops supplying oil to the oil supply main pipe. At this time, the high oil tank supplies oil downward to the unit bypass oil supply pipe through the check valve.

[0037] The overflow port of the upper part of the high oil tank is connected to the oil return main pipe through a valve, which can be a safety valve or a closed emergency oil drain valve or other existing valves.

[0038] As shown in the drawings, the lubricating oil tank is also connected to an emergency oil supply pipe, which is provided with an emergency oil pump and a filter to realize oil supply and filtration. Figure 1 The other end of the emergency oil supply pipe is connected to a unit bypass oil supply pipe to supply oil when the oil supply main pipe is partially faulty.

[0039] The application also discloses a debugging method of the blast furnace blower lubrication system, which comprises the following steps,

[0040] Step S10, the lubricating pipeline is blown by compressed air: the lubricating oil pipe oil supply main pipe check valve is removed, and a temporary blowing valve and a joint are installed outside the same; temporary short pipes are installed on the inlet and return oil pipes of the blower; a blind plate is installed at the flange of the oil return main pipe above the oil tank, and a blowdown ball valve is installed on the side of the oil return main pipe;

[0041] The oil supply main pipe blowing head is connected to compressed air for blowing, and the pipeline is knocked during the blowing process, so that impurities are discharged from the blowdown ball valve of the oil return main pipe, and the pipeline is ensured to be clean after blowing.

[0042] Step S20, the lubricating pipeline is tested by compressed air: after the blowing is qualified, the lubricating pipeline is tested by compressed air; the blowdown ball valve is closed; the test pressure is first increased to 1.0MPa and kept for 30min, and leakage is detected at the same time, so that it is ensured that there is no leakage at the flange connection and welding position.

[0043] After the qualification, the temporary blowing valve and the joint are removed, and the oil supply main pipe check valve is restored; the lubricating oil tank oil return main pipe blind plate is removed, and the blind plate is cut into a mesh shape; the mesh blind plate and the oil return filter screen (120-200 meshes, coarse first and then fine) are installed on the flange connection surface of the lubricating oil tank, and the oil return passes through the mesh blind plate and then the filter screen to enter the lubricating oil tank (to prevent the oil return from breaking the filter screen).

[0044] Step S30, cold state debugging of the lubricating oil station: after the lubricating oil station is cleaned, oil is added and the lubricating oil pump is started, and the working conditions of each part are checked; the parts checked include the heater in the lubricating oil tank, the double-cylinder filter and the double cooling device on the oil supply main pipe, the oil mist blower and the jacking pump, and the oil tank is cleaned and oil is added; the oil pump is tested alone; the heater is started and stopped; the double-cylinder filter is tested alone; the double cooling device is tested alone; the oil mist blower is tested alone; and the jacking oil pump is tested alone.

[0045] Specifically, the method comprises the following steps:

[0046] Step S31, cleaning: open the lubricating oil station manhole, personnel enter with cloth and face to clean, ensure clean and no pollution.

[0047] Step S32, oiling: use oiling trolley with filtering precision not less than 10um to add oil, oil tank liquid level to stop liquid level (oil tank upper bypass oil pipe below), check whether alarm if oil tank liquid level below minimum operation liquid level, above maximum operation liquid level.

[0048] Step S33, pump start: install pressure measuring joint at oil pump outlet pressure gauge, so as to follow-up online detection of cleanliness and sampling; open oil pump inlet ball valve, close oil pump outlet ball valve, start and stop lubricating oil pump and emergency oil pump motor, check motor running direction, ensure motor and oil pump running direction consistent, at the same time check operation box start-stop signal normality.

[0049] Step S34, heater: oil temperature heated to above 25℃ by heater (oil tank temperature below 25℃, not conducive to screw pump and filter work).

[0050] Step S35, double cylinder filter: one use one spare, conversion handle at left open or right open limit position, pull the reversing valve in advance to confirm whether flexible, when differential pressure greater than 0.15MPa, check whether differential pressure transmitter send alarm.

[0051] Step S36, double cooling device: one use one spare, pull the reversing valve in advance to confirm whether flexible, when cooling effect poor, manually switch; when oil supply temperature exceeds 45℃, open cooling water to cool (first open cooling water discharge valve of cooler, then slowly open inlet valve, prevent opening too fast causing poor heat conduction of cooler heat exchange pipe surface supercooled layer), control cooling water pressure at about 0.25MPa, then open oil pump outlet valve, then adjust cooling water inlet valve opening degree to regulate flow, make cold oil temperature at 35-45℃.

[0052] Step S37, oil mist fan: start and stop, ensure motor running direction and oil pump running direction consistent, at the same time check and adjust oil mist fan negative pressure value at about 1KPa.

[0053] Step S38, jacking pump: open pump front valve, start and stop, ensure motor running direction and oil pump running direction consistent.

[0054] Step S40, lubricating pipeline first flushing: adjust through oil line pressure regulating valve and bypass valve, pipeline increase filter screen for first flushing, specific, use lubricating oil station to flush pipeline, take out filter element in filter, do not use oil supply main pipeline self-operated pressure regulating valve (behind valve) and oil tank bypass self-operated pressure regulating valve (in front of valve), first close front and rear self-operated pressure regulating valve ball valve, open bypass stop valve in parallel.

[0055] Start the oil pump, gradually close the valve before the bypass stop valve, keep the oil supply main pipe pressure at 0.25-0.3MPa for flushing, open the exhaust or oil drain pressure pipe of the filter, cooler, oil supply main pipe test pressure for emptying and flushing during the first flushing, check if there is leakage at each connection point, then check and replace the oil return filter screen every day until there is no visible hard particles on the filter screen;

[0056] Because the pump return time is relatively long, in order to avoid the waste of waiting time, a return pipeline is connected to the upper part of the lubricating oil tank at the position higher than the lubricating oil tank of the oil supply main pipe, and valves are installed on the oil supply main pipe side and the lubricating oil tank side of the return pipeline, the two valves are in closed state normally, when the pump needs to be stopped, the two valves are opened to quickly return oil and shorten the pump stopping time.

[0057] Step S50, secondary flushing of the unit: specifically including regularly replacing the filter screen and filter core, adjusting the oil pressure of the oil station and then putting it into operation and flushing, flushing the jacking oil pipe, debugging the jacking of the Siemens motor and the jacking of the compressor; gradually restore the temporary short pipe in step S10, stop the pump for a period of time to check and replace the oil return filter screen until there is no visible hard particles on the oil return filter screen;

[0058] Specifically, it includes

[0059] Step S51: remove the temporary short pipe of the compressor and gear box to restore the normal oil supply pipeline, at the same time, open the throttle valve on the oil inlet pipeline to the maximum, and install the 3-5um filter core in the filter, and the rest still follow step S40, check and replace the oil return filter screen and the oil supply filter core every day until there is no visible hard particles on the filter screen, and detect it with an online oil cleanliness detector at the pressure measuring joint of the oil pump outlet to ensure that the cleanliness reaches NAS1638-6 level (required by the Siemens motor).

[0060] Step S52, adjust the oil pressure of the oil station and then put it into operation and flush: fully open the bypass stop valve connected in parallel with the valve before the pressure regulating valve, fully close the bypass stop valve connected in parallel with the pressure regulating valve after the valve, then open the front and rear ball valves of the pressure regulating valve before the valve, gradually fully close the bypass stop valve connected in parallel with the pressure regulating valve before the valve, adjust the pressure regulating valve before the valve to adjust the outlet pressure of the oil pump to 0.65MPa, then open the front and rear ball valves of the pressure regulating valve after the valve, adjust the pressure regulating valve after the valve to adjust the oil supply main pipe pressure to the set value 0.3MPa (the pressure deviation of the far end from the center of the oil supply main pipe is about 8m).

[0061] Step S53, restore the compressor jacking pump inlet and return oil pipe to the working state, install the support shoe, temporarily do not install the jacking oil pipe in the bearing box to flush it synchronously with the unit to ensure that the support shoe is not contaminated; thereafter, open the jacking pump inlet valve, start the pump, and flush the jacking oil pipe to ensure that the pipeline is flushed clean.

[0062] Step S54, motor lifting debugging: flush the oil cleanliness to NAS1638-6 level, confirm, then restore the motor inlet and outlet pipe, and add a 200 mesh filter screen at the oil inlet flange. After flushing for 24 hours, check the filter screen to confirm that there is no visible hard particles.

[0063] Place a magnetic dial gauge on the shaft neck on both sides of the motor. Turn on the motor lifting pump and slowly adjust the oil inlet adjusting valve to make the oil inlet pressure and flow reach the required value of the motor, so that the dial gauges on both sides show that the lifting is more than 0.05 mm.

[0064] Step S55, compressor lifting debugging: open the bearing box cover of the compressor and clean the tiles to ensure that the lubricating oil circuit is clean and the risk of contamination is reduced. Clean the support tile lifting oil port, install the lifting oil pipe, and when the pressure is about 28 MPa, the dial gauges on both sides show that the lifting is about 0.1 mm.

[0065] Place a magnetic dial gauge on the shaft neck on both sides of the compressor. Slowly adjust the adjusting valve on the outlet pipe of the lifting pump.

[0066] Step S60, interlocking debugging: adjust the pressure of the oil supply branch pipe and the oil supply main pipe; test the oil supply time of the high-level oil tank after power failure; then adjust the alarm value of the remote pressure switch of the unit; finally, debug the heater interlocking, oil pump interlocking start and stop, lifting pump interlocking, and fan flushing.

[0067] Step S61, start the oil pump and oil mist fan. When the high-level oil tank is full and the oil flow indicator shows that the oil is returned, adjust the pressure of the throttle valve on each oil inlet branch pipe of the unit. The pressure of the oil inlet branch pipe of the axial compressor (radial or thrust bearing) is about 0.15 MPa; the pressure of the oil inlet branch pipe of the gear box is about 0.2 MPa; the pressure of the oil inlet branch pipe of the motor is about 0.1 MPa; at this time, the pressure of the oil supply main pipe is about 0.3 MPa, the pressure of the remote pressure of the unit is about 0.22 MPa, and the pressure of the oil supply main pipe is about 0.3 MPa.

[0068] Step S62, close the oil pump and confirm that the support pressure of the high-level oil tank keeps the remote pressure of the unit above 0.05 MPa for about 20 minutes.

[0069] Step S63, gradually reduce the remote pressure of the unit to about 0.09 MPa by slowly opening the valve front pressure regulating valve and connecting the bypass stop valve, and check and adjust the alarm value of the three remote pressure switches.

[0070] Step S64, heater: when the oil temperature of the oil tank is lower than 20℃, check if the oil temperature is low alarm, and check if the heater is started remotely. When the oil temperature of the oil tank is higher than 25℃, check if the heater is automatically turned off. Set the continuous running time of the heater to not more than 3 hours, and start the oil pump when the oil temperature rises above 25℃.

[0071] Step S65, the oil pump A starts in situ, the oil pump B hits the remote, the accident oil pump hits the remote, the interlock is put into the manual after closing A pump, check whether B pump is immediately self-starting, otherwise check A pump; by self-control simulation blower operation state, check whether the oil pressure is lower than 0.09MPa, that is, two main oil pumps cannot start, trigger oil pressure switch alarm three two, whether the accident oil pump is started; check whether the oil tank liquid level is higher than the shutdown liquid level, lower than the minimum liquid level, whether the blower is stopped.

[0072] Step S66, the jacking is in the oil inlet pressure higher than 0.12MPa, that is, the pump opening condition is provided, the jacking does not start when the interlock test jacks, the jacking pump of the motor and the compressor can be started; at the same time, when the simulation starts and the network is successful in the interlock test, whether the jacking is automatically stopped, whether the jacking is automatically started when the simulation test is stopped.

[0073] Step S67, when the fan is flushed, pay attention to the change of the remote pressure and the pressure of each branch pipe, and make a good record, if there is deviation, adjust the pressure to S61 requirement in time through each branch pipe throttle valve.

[0074] According to the step of the present application, the technical problems occurring in the operation process of the blower lubricating system can be found in time, and the corresponding adjustment measures can be taken after timely research, so that the overall debugging time of the lubricating system can be shortened from 20 days to 10 days.

[0075] The above is only a preferred embodiment of the present application and is not used to limit the present application, and those skilled in the art can make various modifications or equivalent replacements to the present application within the spirit and protection scope of the present application, and such modifications or equivalent replacements should also be considered to fall within the protection scope of the technical scheme of the present application.

Claims

1. A blast furnace blower lubrication system debugging method, characterized in that: the lubrication system comprises a lubricating oil tank, the lubricating oil tank is communicated with a main oil supply pipe, and the main oil supply pipe comprises parallel pipes, a cooler, a filter, parallel branches and a check valve in sequence; in the parallel pipes, one is provided with an oil pump and a valve, one is provided with a ball valve, a pre-valve pressure regulating valve and another ball valve in sequence, and one is provided with a bypass stop valve; in the parallel branches, one is provided with a ball valve, a post-valve pressure regulating valve and another ball valve in sequence, and the other is provided with a bypass stop valve; the check valve of the main oil supply pipe is communicated with a unit bypass oil supply pipe, the unit bypass oil supply pipe is communicated with each oil inlet branch pipe, lubricating oil is provided for the bearing of the corresponding axial compressor, gear box and motor through each oil inlet branch pipe, and then the lubricating oil returns to the lubricating oil tank through a main oil return pipe to realize lubrication; the debugging method comprises the following steps, step S10, lubricating pipe purging: the check valve of the main oil supply pipe of the lubricating oil pipe is removed, a temporary purging valve and a joint are installed outside the check valve, temporary short pipes are installed on each oil inlet and return pipe of the blower, a blind plate is installed at the flange of the main oil return pipe above the oil tank, a blowdown ball valve is installed on the side of the main oil return pipe through a hole, compressed air is connected to the purging head of the main oil supply pipe for purging, and sundries are discharged from the blowdown ball valve of the main oil return pipe; step S20, lubricating pipe pressure test: compressed air is used for pressure test, the blowdown ball valve is closed, the test pressure is increased and kept for a set time, and leakage is checked at the same time; after the end, the temporary purging valve and the joint are removed, and the check valve of the main oil supply pipe is restored; the blind plate of the main oil return pipe of the lubricating oil tank is removed, and a return oil filter screen is installed on the flange connection surface of the lubricating oil tank; after the blind plate of the main oil return pipe of the lubricating oil tank is removed, the blind plate is cut into a mesh shape, and the mesh blind plate and the filter screen are installed on the flange connection surface of the lubricating oil tank, the return oil passes through the mesh blind plate first, then passes through the filter screen and enters the lubricating oil tank; step S30, cold state debugging of the lubricating oil station: the lubricating oil station is cleaned, oil is added and the lubricating oil pump is started, and the working conditions of each part are checked; step S40, first flushing of the lubricating pipe: the pipe is first flushed by the lubricating oil station, the filter core in the filter is taken out, the pump is stopped for a period of time, the return oil filter screen is checked and replaced, and until there is no hard particle visible to the naked eye on the return oil filter screen; 2. The blast furnace blower lubrication system commissioning method of claim 1, wherein: step S50, secondary flushing of the unit: the temporary short pipes in step S10 are gradually restored, the pump is stopped for a period of time, the return oil filter screen is checked and replaced, and until there is no hard particle visible to the naked eye on the return oil filter screen.

3. The blast furnace blower lubrication system commissioning method of claim 1, wherein: The parts checked in step S30 include the heater in the lubricating oil tank, the double-cylinder filter and the double-cooler on the main oil supply pipe, the oil mist fan and the jacking pump. In steps S40 and S50, a return oil pipeline is connected to the upper part of the lubricating oil tank at a position higher than the lubricating oil tank of the main oil supply pipe, valves are installed on the main oil supply pipe side and the lubricating oil tank side of the return oil pipeline respectively, the two valves are in a closed state in normal times, and when the pump needs to be stopped, the two valves are opened to quickly return oil and shorten the pump stopping time.

4. The blast furnace blower lubrication system commissioning method of claim 1 or 3, wherein: Step S50 includes step S51: the compressor, gear box temporary short pipe removal and recovery of normal oil supply pipeline, and the filter cartridge into, interval a period of time stop pump check and replace the oil filter screen and oil supply filter element, until the oil return filter screen no visible hard particles.

5. The blast furnace blower lubrication system commissioning method of claim 4, wherein: Step S50 includes step S52, oil station pressure regulating valve adjustment oil pressure after putting into and flushing: The valve before the parallel bypass stop valve fully open, valve after the parallel bypass stop valve fully closed, then open the front and rear ball valve of the valve before the pressure regulating valve, gradually close the parallel bypass stop valve of the valve before the pressure regulating valve, adjust the valve before the pressure regulating valve to set the value a pump outlet pressure, then open the front and rear ball valve of the valve after the pressure regulating valve, adjust the valve after the pressure regulating valve to set the value b oil supply main pipe pressure.

6. The blast furnace blower lubrication system commissioning method of claim 5, wherein: Also includes step S53, jacking oil pipe flushing: compressor jacking pump into the oil return pipe to restore the working state, support tile installation, bearing box inside jacking oil pipe is not installed temporarily, in order to with the group synchronous flushing, ensure that the support tile is not contaminated; After this, the jacking pump inlet valve is opened, the pump is started, and the jacking oil pipe is flushed.

7. The blast furnace blower lubrication system commissioning method of claim 1 or 6, wherein: Also includes step S60, interlock debugging: the pressure of oil supply branch pipe and oil supply main pipe is adjusted; After power failure, test the oil supply time of high oil tank; Then adjust the alarm value of the remote pressure switch of the unit, and finally debug the heater interlock, oil pump interlock start-stop, jacking pump interlock and fan flushing.

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