Fault analysis and treatment method of locomotive type 5 locomotive air compressor without pumping air Guo Hongjing Harbin locomotive section, Heilongjiang Harbin 15,86 valve connection pipe manual pump wind and other online emergency fault handling methods, and improved heat engine valve exhaust Check valve history change air compressor contactor contact and other storage methods 6 type locomotive was officially assigned and put into operation in Harbin Locomotive Depot on May 12, 2009. The air compressor used in this locomotive is produced by the company. Variable speed, fixed level, but the actual application is not ideal. In 2009 alone, the machine was broken by 27 when the rolling machine was not windy. The current total air cylinder pressure is lower than 724. The total air cylinder is not filled with air, which not only reduces the utilization rate of the locomotive. It is even more serious and disturbs the normal transportation order. Therefore, it is necessary to analyze the inertial quality of the air compressor without pumping, find out the cause of the fault, and develop a targeted 2 fault analysis and processing 21 air compressor motor rotation, but the total air cylinder is not charged 2LI heat engine After the valve is faulty, the wind pump can't afford the wind. After the check, the internal valve plate of the heat engine valve is found to be stagnant. The reason is that the design of the company's control software is flawed, so that the heat engine valve can only discharge the air compressor. The condensed water in the trachea, and the condensate of another air compressor can not be discharged, and the condensed inside the valve body for a long time causes the valve body to rust, and the internal valve melon black is stuck. The pressure wind that causes the outlet of the air compressor is called to the front of the intake air through the heat engine, and the pressure wind is continuously self-circulating, and the air compressor does not output to the total air cylinder; because the dustproof plug is not tightly closed, the valve plate is inserted into the foreign object. Death, inspection method Press firmly on the side of the heat engine valve side to restore the spring retaining ring. If you press (1) left or right, the heat engine valve is closed well or manually closed, otherwise it is regarded as a fault. Emergency treatment method to disconnect the battery charging and computer circuit breaker 1; 14. When removing the heat exchanger and the oil separator's splicing pipe, disassemble the connecting pipe joint, first loosen the connecting pipe joint for 12 turns, first discharge the connecting pipe Pressurize the air, and then remove the connecting pipe, so that the two wire plugs block the heat engine connector and the oil separator connector respectively, then close the battery charging and keep the computer circuit breaker running. 2.1.2 Typical Case of Air Inlet Filter Blockage On the day of the month of 2009, the 15th type 0104 locomotive air compressor does not pump the air, the spring stops the action, and the large reset background air compressor is the chestnut wind, but the wind pressure rises slowly. The back section opens the air filter cover and checks that the side of the cross-pressing machine is wrapped around two transparent plastics with a width of 60, 3,100, and the transparent plastic strip in the side air compressor filter is tested. The wind pump is working normally. Cause Analysis The air intake filter is blocked by foreign matter and the air compressor inlet pressure is low. The air compressor does not pump air. Check the method to see if the two air intake filter vacuum indicators are red, if it is red, it is considered as the air filter is blocked. Emergency treatment method Remove the corresponding air filter and cover the foreign matter to maintain operation. The warehousing method strengthens the locomotive inspection and finds that the vacuum finger is from red. Immediately open the cover inspection process, the total air intake pipe of No. 21.31 is frozen, the wind pump of the locomotive always pumps the air, and the safety valve of the air compressor is always exhausted. After the back section, the air compressor air outlet line was dismantled and it was found that the pipeline between the air compressor and the total air cylinder was blocked by ice. The inner diameter of the tube is 50 ki. After thawing, 5 out in the total air cylinder! The water 3 machine test air compressor pump wind 1 is good, the reason analysis No. 1 total air cylinder brake air line design is unreasonable, the air line is arranged outside the vehicle body, the bent pipe is more, when the ambient temperature is lowered, The high-temperature air at the outlet of the air compressor continuously condenses and crystallizes on the inner wall of the pipeline. The air inlet pipe of the total air cylinder is frozen for a long time, and the pipeline between the air compressor and the total air cylinder is blocked, so that the total air cylinder is not filled with air. Incoming storage method Thawing or automatic drain valve installed electric heating lean out ç—„ Check that the total air cylinder dynamic drain heater is not hot and must be replaced in the hall. 21.4 air compressor out, pressure temperature sensor fault number machine ä¹ ä¹ é£Ž wind pressure drop leaking back after the test, the total air cylinder 580 wind pump pump wind, 7, the wind pump stops the chestnut. It is better to adjust the wind pressure sensor. It is because the air compressor outlet pressure sensor itself is faulty or the connector is disconnected badly. The intelligent display receives an error signal, causing the air pump to not pump air. Check method Check the presence or absence of air compressor unavailability information in the intelligent event log or activity event, and visually or manually check the sensor connector plug-in status. Should be 3 processing methods such as sensor connector disconnect or plug + good recovery 4 to maintain operation, 手动 manually cut off the temperature sensor into the warehouse, the factory method to replace the fault sensor or where. Plug connector. 22 air compressor motor does not rotate 221 air compressor contactor fault number machine noon wind, the driver does not reset the large reset process. After the phantom segment inspection, the 003 contactor is found to be in the closed low-disconnected locomotive power supply. The 1 contactor is still in the (4) position. The reason is that the air pump is in the low-speed running state due to the adhesion of the main contact of the 3 wind pump contactor. When the head is used to charge the train 14, the wind turbine should be operated at a high speed due to the large wind, and the contactor should be released. However, the mountain adheres to the main contact, resulting in 0; 勹13 contactor is the same, the suction, the auxiliary generator output phase is unbalanced to protect, and the noon power does not generate electricity. The pump does not lick 1. Inspection method When the air compressor is not working, check whether the air compressor contactor recovery button or the finger lever is buried in the disconnected position. If the contactor is in the mechanical lag, the manual recovery is performed at the same time (1) (1) Ugly, 2,3 will keep running after the total cylinder pressure is full. Such as contact; The port is mechanically pity and the contact is restored by the 1st adhesion method. The pump outlet temperature sensor is removed and the operation is maintained. If the double pump has the mechanical contact of the contactor or the contact sticks, request rescue, and the storage processing method replaces the fault contact. The device or the contact, while strengthening the check of the contactor of the locomotive entering and leaving the warehouse. 2.22 Exhaust check valve stuck oil shut-off valve or bypass valve failure typical case 2009 14.1 must type 5 07 locomotive air pump + pump wind. After checking the locomotive, the locomotive found that the oil pump was analyzed by the ten air compressor, the spring of the valve recovery spring was weak, and the internal smoothness of the valve plate without chamfering valve body was insufficient, resulting in the check valve of the air compressor when it stopped working. The closing is not strict, causing the pressure wind in the cylinder to flow back from the valve port to the intake end line, the air compressor oil leaks instantaneously, and the air compressor does not pump the air; it is caused by the oil shut-off valve or the bypass valve malfunctioning. When the air compressor is stopped, the oil shut-off valve cannot be closed, and the relay is used to send out the oil and gas leakage at the end. Check the method to check whether the cylinder is clamped. If there is no oil, request rescue, the storage processing method replaces the faulty exhaust check valve, replaces or cleans the oil shut-off valve bypass valve, modifies the exhaust check valve, greatly restores the spring force, the valve plate chamfers, and raises the valve Internal internal finish. 123 total air cylinder pressure sensor fault number locomotive air pump does not hit the wind. After the segment is broken, the No. 1 total air cylinder sensor is found to have water in the sensor head. The No. 1 total air cylinder automatic drain valve is faulty and cannot be automatically drained. There is water freezing in the total air cylinder, and the test is good after slow freezing. Analysis of the cause The failure of the No. 1 total air cylinder automatic drain valve caused the water in the total air cylinder to be discharged, and the pressure sensor was frozen to generate an erroneous pressure signal, which caused the smart display to detect that the total air cylinder was low. Cause the air pump + pump wind. Turn to the locomotive section on page 45 to cut the bellows into two sections. A rubber sleeve is prepared on the outside. Then install it on the locomotive. The vibration of the bellows is alleviated. The effect is very good. The transformation method of the locomotive section gave us a good start. Our company used to produce high temperature resistant silicone rubber hoses when producing 5 type passenger locomotives. However, this method is limited by the size of the structure for the type 1 shunting locomotive. Need to be, 1! Silicone rubber soft bamboo for passenger locomotives. A special new flange is prepared at both ends, and then mounted to a type 1 locomotive. This rubber hose is connected to the bellows. Calling to solve the vibration has very good effect 1 according to the above scheme. Improvements to the bellows 2 We made a small batch of weeping samples in a short time. It was sent to the unit of Liaoning Qinghe Power Generation Company and Mei Steel Co., Ltd., where the bellows was seriously damaged. 3 Improvement effect The rubber hose connection method has been tested for more than half a year in units such as Qinghe Hairpin Co., Ltd. and Meishan Iron and Steel Co., Ltd., and the effect is good. In the meantime, only Qinghe Power Generation Company reported that the hose clamp was broken. However, the rubber hose was not damaged. Use after welding repair. The situation is good. Based on this situation, our company has also tried a batch of rubber hoses. The 22 pieces of the warranty period 1 and the corrugated bamboo of the shunting locomotive were all replaced. After the replacement, the corrugated pipe has no cracking flange soft connector soft connection protection board cassette 80 phenomenon, which ensures the normal operation of the locomotive, and also saves the economic loss for the company. If the cylinder pressure value is abnormal or does not change, it can be regarded as a sensor failure. The emergency treatment method is such that the pump wind is stopped after the total air cylinder pressure sensor is closed. Can maintain operation. Otherwise request a rescue. The warehousing method unfreezes the drain valve, replaces the pressure sensor, and checks out the warehousing and inspection. The total air cylinder automatic drain valve heater is not hot and must be replaced immediately. 2241 plug-in board and plug connector fault locomotive jade machine does not pump 4. Perform large reset 3 times after the effect check back, found that the loose machine, head loose, fastening, machine, plug, the locomotive test is good. 225 Auxiliary power generation failure cause analysis The air compressor motor does not work due to the auxiliary power generation failure. The air pump does not pump air. Inspection method The locomotive cannot be loaded and the air conditioner does not work. Emergency treatment methods such as wind pump contactor stuck, you can try to manually recover or cut off the corresponding air compressor; if the display door interlock is broken. The ligature door interlock can be maintained to run; otherwise, a large reset process is performed. Request rescue after invalid. The inbound processing method processes or replaces the corresponding components. 3 Conclusion The quality of the fixed screw compressor is very unstable. It has a great impact on the safety of online locomotive operation. Currently. The company has modified the outlet pipe of the heat pump valve exhaust valve and the air compressor of the bamboo air compressor. We are in the process of verifying the specific transformation effect. We will continue to track other related failures of the air compressor, explore and analyze other possible failures, and propose feasible solutions. To ensure the normal operation of the HXN5 locomotive.
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