In recent years, the market economy has developed rapidly, and the growth of all aspects of life, the marine fan is mainly through the processing of large traffic and low-pressure air equipment, and it is relatively wide in different industries. So everyone knows the structural components of the ship fan. Which? What is the reason for the failure? Let’s take a detailed understanding of the "Composition Structure of Marine Fan and Target".
[What are the main structures of a common marine fan?
There is no difference in the marine fan and the landless fan. However, due to the use of the ship, it has its own characteristics in performance parameters, design, structure, materials, etc.. For example, for reduced size, the centrifugal fan is used to use forward blade impeller; for anti-corrosion, explosion-proof and reduce weight, more aluminum impeller; to facilitate disassembly, axial flow wind mechanism can reduce motor and impeller from the casing The open-open housing structure, centrifugal formation, can be removed from the casing on both sides of the casing or the like.
Other special wind turbines such as hovercraft wind turbines are different from land-based products, need special design. The general marine fan mainly considers the ship’s requirements, thus limiting the measures to adopt more propoyment, plus the power of the general boat fan is not large (several kilowatts), and the structure is simple, and the efficiency is not high. The vibration of the marine fan depends mainly on the air dynamic vibration, and the aerodynamic vibration is directly related to the flow performance of the gas in the fan, so it is not difficult to imagine the fan in the exhaust pipeline, and the improvement of gas flow performance on the exhaust pipe can reduce the vibration of the fan.
Main structural department of the marine fan
1. Condenser: It takes into account safety and anti-corrosion when designing. The condenser sets anti-corrosion zinc block and safety valve, which can effectively prevent and ensure safety.
2, heat transfer tube: using ripe aluminum brass.
3, end cap: use cast aluminum bronze.
4. Tube board: uses a composite material.
5, evaporator: Bronze bobbin is used, since the evaporator is a heat transfer device in the cooling system, and the design and manufacturing of the evaporator is specified in accordance with the state.
6, fan: Select a domestic and very good marine motor. The transmission structure is straight. The fan is full of wind, large indenter, low noise.
7, electric control box: use marine mature structure, main control components adopt imported marine products.
The method of saving the marine fan is: 1. Minimize pipe network resistance, reasonably select the pipe size and mounting position, and install imported current collectors. 2. Control the radial gap value of the wind tube and the top of the blade. 3. Reasonably select the fan model and do not make the fan in the low-efficiency area. 4, such as a separate applicable fan impeller must be fitted with a proper motor, otherwise it will cause the Malata trolley.
[How to remove the marine fan encountered faults]
The marine fan can deliver the ocean air containing the salt mist and the oil mist, which is a small amount of acid vapor which is formed by evaporation. The marine fan is suitable for ventilation ventilation in various cabins on the ship, and the boiler ventilation can be used to play other suitable occasions. Frequent failure and exclusion method of marine fan:
(1) The marine fan does not rotate 1, not connected to the power supply – Turn on the power supply 2, the motor does not work – check the motor wiring or replace the motor 3, the fan head is damaged – repair the fan or replacement 4, the fan has foreign body card – Remove foreign objects.
(2) Marine fan noise increases 1, bearing dry lubrication-add bearing oil 2, bearing damage – replacement bearing 3, impeller wear – replace the impeller or pump head 4, rugged or fall off – Tighten firmware 5. There are foreign matter in the wind – clear foreign matter or replace the pump head.
(3) Boat fan vibration increases 1, bearing damage – Replacement bearing 2, imbalance of imbalance – Remove foreign objects in the impeller 3, spindle deformation – replace the main shaft or pump head 4, and enter the sun – Adjust the working status, avoid the turbock zone 5, and enter the air outlet filter network blockage – Clean the filter.
(4) The temperature rise of the marine fan is 1, the air intake temperature is too high – reducing the air intake temperature 2, the bearing dry lubrication – adding the torrential oil fat 3, the fan efficiency reduction – remove the leaf dust or replace the pump head 4, Working status changes – Adjusting the working status 5, the ambient temperature is increased – increasing the environmental ventilation.
(5) Boat fan pressure reduction 1, low pump head speed reduction – power supply voltage low or motor failure 2, pipe network resistance increase – reduce pipe network resistance 3, moderate change – adjust the working state 4, motor steering Re-wiring the motor.
(6) The flow rate of marine fan is reduced by 1, and the import and export gas filter is blocked – cleaning filter 2, pump head speed reduction – power supply voltage low or motor failure 3, pipe network resistance increase – Reduce pipe network resistance 4, work Status increase – Adjust the working state 5, the motor steering reverse – the motor re-wiring.
The above information about "What are the main structures of the common marine fan" and "how to eliminate the ship fails", I hope you can understand the "Composition Structure of Marine Fan and" Targetable Measures "bring help.