Induction heating device for processing crank red sleeve of low speed diesel engine for ship
An induction heating device and diesel engine technology, applied in induction heating, induction heating control, etc., can solve the problems of increased grinding hours, long heating time, high heating cost, etc., and achieve high temperature control accuracy, high heating efficiency, and uniform heating effect
Inactive Publication Date: 2009-05-20
上海龙妍电气有限公司
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Problems solved by technology
Therefore, there is a greater potential safety hazard in this heating method.
[0004] 2. The ellipticity of the red sleeve hole is larger after heating: because the heating gas is a kind of mixed gas, the propane gas and compressed air must first be decompressed by the pressure reducing valve and then sent to the gas mixer respectively, and then drawn out by the mixer The pipeline leads to the heater, and the crank is heated by several nozzles distributed on the heater
This brings certain risks to the red-set work and increases the difficulty of the work
[0005] 3. Increased grinding time: due to the difficulty of complete combustion of pentane gas during heating, a large amount of carbon deposits and putty on the surface of the red sleeve hole and the crank
Increased man-hours for manual grinding and cleaning after the set
[0006] 4. Higher heating costs: when gas is heated, the heat is transmitted from the external flame to the heated body, and a large amount of heat is directly emitted into the atmosphere during heating, so the efficiency is low
[0007] 5. Long heating time: when heating in winter, due to the low ambient temperature and long heating time, it is difficult to control the temperature evenly
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[0021] As shown in Figures 1 to 2, the present invention, an induction heating device for processing the crankshaft red sleeve of a marine low-speed diesel engine, includes a circular first inductor 11 and a second induction heater below the first inductor 11. device 12, a first control device 21 connected to the first sensor 11 and a second control device 22 connected to the second sensor 12, two are respectively connected in parallel between the first sensor and the first control device, and the second First and second capacitive devices 31, 32 between the sensor and the second control device, and a cooling system.
[0022] The first inductor 11 is a circular coil made of a square copper tube, and the second inductor 12 is a coil made of a straight or bent square copper tube. Of course, the first inductor 11 and the second inductor 12 can also adopt other tube shapes than square copper tubes.
[0023] The first control device can be a common power control device, which is u...
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This invention relates to an induction heating device and a method for processing low speed diesel engine crank hot jackets used in ships, in which, the device includes a first inducer, a second inducer, a first control device and a second control device and a cooling system, in which, the first control device is used in controlling power of the first inducer to control heating temperature of hot jacket holes, the second control device is used in controlling power of the second inducer to control the temperature compensation for heating the crank hot jacket hole, the cooling system includes a water tank and a water-tube system for cooling, the bellcrank temperature rises steadily and is heated uniformly and the hot jacket hole is enlarged uniformly strictly according to roundness so as to meet the needs of the processing.
Description
technical field [0001] The invention relates to an induction heating device for machining the crankshaft red sleeve of a marine low-speed diesel engine. Background technique [0002] At present, the heating device for crankshaft red sleeve processing of marine low-speed diesel engine is usually a gas heating device, including a circular heater with several nozzles and a straight pipe heater with several nozzles connected by a gas connection pipeline. This gas heating method obviously has the following deficiencies during actual use: [0003] 1. Unsafe: Since this heating method adopts open flame heating, and uses propane gas whose specific gravity is higher than that of air, once the leakage of propane gas is not discovered in time, the gas will be deposited on site. When it is deposited to a certain proportion, it will cause an explosion when it encounters Mars. Therefore, there is a greater potential safety hazard in this heating method. [0004] 2. The ellipticity of t...
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IPC IPC(8): H05B6/06
Inventor 毛华胜林尧武
Owner 上海龙妍电气有限公司