| Home>Bearing knowledge>Preventive measures for diesel engine bearing burnout (2) |
Diesel engine bearing burnout prevention measures (2)
| /*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089'; |
Ensure the diesel engine assembly and oil hygiene. Improve the function of the equipment, strictly remove the quality, improve the hygiene of all parts of the diesel engine. Together, purify the assembled site environment, manufacture the dust cover of the cylinder liner; make the diesel engine assembly has obvious hygiene progress.
3 Reasonably select and fill the lubricating oil. In the application process, the oil with small oil film surface tension should be selected; the impact of the oil flow will be reduced when the bubble formed is reduced. Stealing smoldering, smoldering, sorrowful, sorrowful, sorrowful, sorrowful, sturdy, sturdy, sturdy, sturdy, sturdy, sturdy Legu Weisong ç•šé”– 耄 耄 耄 北 北 北 北 北 北 北 北 芊庑Ч 芊庑Ч 芊庑Ч æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡ æ³¨é‡. The same quality, different viscosity grades and different types of lubricants are used to prevent mixing. The deposition time before the lubrication is usually not less than 48h.
4 Correctly use and protect the engine. When bearing the equipment; the surface of the shaft and the bearing should be coated with the regular brand of sanitary oil. After the engine bearing is installed, the fuel switch should be closed before the initial start; the engine is idling several times with the engine When the engine oil pressure gauge is displayed, turn the fuel switch on and off; and put the throttle in the middle and low speed position; start the engine to conduct the operation investigation. The idle operation time should not exceed 5 minutes. After the new machine and the overhaul engine after the running-in period In the running-in period, during the running-in period, the load is suddenly increased and the load is sharply increased and the operation is carried out under high speed. After the engine is fully loaded for a long time, it cannot be stopped immediately; it is necessary to let the engine run for 15 minutes under no-load medium and low speed; Otherwise the internal heat will not be able to escape.
Strictly control the starting temperature of the locomotive; add the starting oil supply time. In the winter, in addition to strictly control the starting temperature of the locomotive; also add the starting oil supply time to ensure that the oil reaches the conflict of the diesel engine; the maximum reduction of the diesel engine Mixing conflicts of conflicting pairs of machine time. Replacement of oil filter. When the pressure difference between the oil filter before and after the oil filter reaches 0. 8MPa; that is, replacement; together; to ensure the oil filtration effect; time to replace the oil filter Drop the impurity content in the oil.
Strengthen the sanitation and protection of the oil filter and crankcase ventilation equipment, replace the filter element in time according to the requirements of the manual, ensure the normal operation of the engine cooling system; control the normal temperature of the engine; prevent the radiator from “opening the potâ€; prohibit driving without adding cooling water. , the correct choice of fuel; precise adjustment of the gas phase and incineration timing; to prevent the engine from burning abnormally: timely view and adjustment of crankshaft and bearing skills.
Regularly analyze the iron spectrum of the oil, reduce the occurrence of the incident, contact the iron spectrum analysis of the oil, and detect the abnormal wear early; according to the iron spectrum analysis pattern of the oil, accurately determine the composition of the abrasive particles and the site of the attack; prevent the occurrence of the problem; prevent the occurrence of the burn Axis.
Recommend to friends comments close window
| Bearing related knowledge |
| The new plating process of the anti-friction layer of the sliding bearing from the smooth bearing (oil-free bearing) has the advantage of the protection of the grinding machine: when replacing the grinding roller, it is necessary to remove the bearing heat treatment problem of the bearing parts in China and the working speed of the bearing |
This article links to http://
Please indicate the bearing network http://
Previous:The basic production process of rolling bearings Next:How to guess and avoid bearing failure
A ball check valve is a check valve in which the closing member, the movable part to block the flow, is a spherical ball. In some ball check Valves, the ball is spring-loaded to help keep it shut. For those designs without a spring, reverse flow is required to move the ball toward the seat and create a seal. The interior surface of the main seats of ball check valves are more or less conically-tapered to guide the ball into the seat and form a positive seal when stopping reverse flow.
Ball check valves are often very small, simple, and cheap. They are commonly used in liquid or gel minipump dispenser spigots, spray devices, some rubber bulbs for pumping air, etc., manual air pumps and some other pumps, and refillable dispensing syringes. Although the balls are most often made of metal, they can be made of other materials, or in some specialized cases out of artificial ruby. High pressure HPLC pumps and similar applications commonly use small inlet and outlet ball check valves with both balls and seats made of artificial ruby, for both hardness and chemical resistance. After prolonged use, such check valves can eventually wear out or the seat can develop a crack, requiring replacement. Therefore, such valves are made to be replaceable, sometimes placed in a small plastic body tightly-fitted inside a metal fitting which can withstand high pressure and which is screwed into the pump head.
There are similar check valves where the disc is not a ball, but some other shape, such as a poppet energized by a spring. Ball check valves should not be confused with Ball Valves, which is a different type of valve in which a ball acts as a controllable rotor to stop or direct flow.
A diaphragm check valve uses a flexing rubber diaphragm positioned to create a normally-closed valve. Pressure on the upstream side must be greater than the pressure on the downstream side by a certain amount, known as the pressure differential, for the check valve to open allowing flow. Once positive pressure stops, the diaphragm automatically flexes back to its original closed position.
A swing check valve or tilting disc check valve is check valve in which the disc, the movable part to block the flow, swings on a hinge or trunnion, either onto the seat to block reverse flow or off the seat to allow forward flow. The seat opening cross-section may be perpendicular to the centerline between the two ports or at an angle. Although swing check valves can come in various sizes, large check valves are often swing check valves. The flapper valve in a flush-toilet mechanism is an example of this type of valve. Tank pressure holding it closed is overcome by manual lift of the flapper. It then remains open until the tank Drains and the flapper falls due to gravity. Another variation of this mechanism is the clapper valve, used in applications such firefighting and fire life safety systems. A hinged gate only remains open in the inflowing direction. The clapper valve often also has a spring that keeps the gate shut when there is no forward pressure. Another example is the backwater valve (for sanitary drainage system) that protects against flooding caused by return flow of sewage waters. Such risk occurs most often in sanitary drainage systems connected to combined sewerage systems and in rainwater drainage systems. It may be caused by intense rainfall, thaw or flood.
A stop-check valve is a check valve with override control to stop flow regardless of flow direction or pressure. In addition to closing in response to backflow or insufficient forward pressure (normal check-valve behavior), it can also be deliberately shut by an external mechanism, thereby preventing any flow regardless of forward pressure.
A lift-check valve is a check valve in which the disc, sometimes called a lift, can be lifted up off its seat by higher pressure of inlet or upstream fluid to allow flow to the outlet or downstream side. A guide keeps motion of the disc on a vertical line, so the valve can later reseat properly. When the pressure is no longer higher, gravity or higher downstream pressure will cause the disc to lower onto its seat, shutting the valve to stop reverse flow.
An in-line check valve is a check valve similar to the lift check valve. However, this valve generally has a spring that will 'lift' when there is pressure on the upstream side of the valve. The pressure needed on the upstream side of the valve to overcome the spring tension is called the 'cracking pressure'. When the pressure going through the valve goes below the cracking pressure, the spring will close the valve to prevent back-flow in the process.
A duckbill valve is a check valve in which flow proceeds through a soft tube that protrudes into the downstream side. Back-pressure collapses this tube, cutting off flow.
A pneumatic non-return valve.
Multiple check valves can be connected in series. For example, a double check valve is often used as a backflow prevention device to keep potentially contaminated water from siphoning back into municipal water supply lines. There are also double ball check valves in which there are two ball/seat combinations sequentially in the same body to ensure positive leak-tight shutoff when blocking reverse flow; and piston check valves, wafer check valves, and ball-and-cone check valves.
Check Valves, Water Check Valves, Brass Check Valves, Sanitary Check Valves
ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalves.com