What is the problem with sprinkler body shake? How should the sprinkler driver judge and solve the problem? Watering vehicle body shakes while driving If the vehicle body is found to be slightly shaken or deflected during driving, it is generally a tire-induced failure. First of all, it may be that the tire balance is in poor condition and the owner is required to do a four-wheel alignment and dynamic balance as soon as possible. The other situation is more serious, probably because of the deformation of the steel rims, which requires the driver of the sprinkler to go to a professional repair shop for inspection. This condition generally occurs on sprinkler bodies that have a relatively long lifespan. When a new sprinkler is replaced with a new tire or a new steel wheel, one tire balance is required. Otherwise, the steering wheel is prone to jitter when the weight is not even. Body shake can have an impact on driving comfort and handling. The third situation is caused by the unbalanced deformation of the transmission shaft. Generally, this situation occurs when there are more vehicles that have collided with the chassis of the sprinkler. 　 Body shake at idle Idle body shake is a condition often encountered by many sprinkler drivers. If a sprinkler driver starts the sprinkler or stops the sprinkler without turning off the engine, if the vehicle body is found to be jittery, it may mean that the sprinkler has the following three conditions: 　　 1. Oil pressure instability If you have cleaned engine carbon deposits, washed throttle valves, replaced oil pads, spark plugs, etc., and you still find the vehicle body shakes at idle, we recommend that you check with the service station whether the fuel supply pressure and the intake pressure sensor are normal. If the oil supply is Abnormal pressure or incorrect values ​​of the intake pressure sensor and poor working conditions can cause body shake. Solution: Check oil pressure and replace parts if necessary. 　　 2, engine parts aging Sprinkler jerking is also related to engine foot aging. The engine pin is actually the engine's suspension system. The engine pin is responsible for absorbing the slight jitter of the engine during operation. If there is a problem with the engine pin, these vibrations will be transmitted to the steering wheel and cab, causing jitter at idle. Solution: Replace parts 　 3. Severe carbon deposit on the sprinkler engine Severe carbon deposition The most common cause of shaking the sprinkler is dirty throttle or excessive coke deposits. When the internal carbon deposition of the engine is too much, the gasoline sprayed by the cold start injector will be greatly absorbed by the carbon deposit, resulting in the cold start of the mixture is too thin, making it difficult to start, in this case, only wait until the carbon absorption of gasoline When it is saturated, it is easy to catch the car. After the car is drawn, the gasoline absorbed on the soot will be sucked into the cylinder by the vacuum suction of the engine, and the mixture will be made rich. When the flammable mixture of the engine is diluted, it will be concentrated after the cold start. Idle jitter. The lower the temperature, the greater the amount of oil required for a cold start, and the more carbon deposition will affect the smooth start of a cold start. Solution: Clean the oil circuit and check if the idle motor has carbon deposition. 　 4. Ignition system problem Check the working status of the sprinkler spark plugs, high-voltage wires and ignition coils. The poor operation of the ignition system and poor flashover conditions of the sprinkler spark plug will also cause such failure phenomena.
The QNP Steam Turbines` capacity mainly covers 200MW and below, include NI series (Normal Impulse Turbines) and HE series (High Efficiency Turbines). Our steam turbines are flexible and diverse in structure and layout so as to meet various requirement of our users. Aiming at the global leading equipment manufacturing enterprise, our design and R&D standards are higher than GB standard and in the same league with European and American energy equipment manufacturers.
1.Characteristics of QNP Turbine
QNP adopts advanced small pitch-circle technology in its high-end high efficiency turbine products, and hence considerably improved the turbines`flow efficiency.
By combining the advanced technology of European turbine with QNP technology, and optimizing the integration between imported advanced R&D tools and advanced domestic design software, QNP has solved the universal defect of inter-stage efficiency loss in most domestic units.
Using 3D bending-torsion blade design to improve the final and penultimate stage efficiency and structural strength to ensure long-time continuous operation of the unit.
Using high-speed running design and full-cycle steam distribution to improve the unit`s flow efficiency, reduce space occupancy, and make the installation more efficient.
Optimized enthalpy drop distribution design, through the comparison of tens of thousands of design data, form the best single-stage enthalpy drop distribution solution to ensure that each unit is in its maximum efficiency.
High-precision and high-quality manufacturing process: to ensure the high precision and high quality of key dynamic and static components, the flow passage components are processed by four-axis or five-axis CNC machining center.
Specially produced for high-end users, each component is carefully designed and the unit always presented to the customer as a flawless modern industrial artwork.
Maximum internal efficiency may reach 88%
2.Technical characteristics of parts
Gland sealing matching: the industry-leading and advanced gland sealing structure design reduces the steam leakage loss.
Blade assembling: the optimized blade molded lines are designed by the international advanced design software and processed by high-grade, high-precision and advanced technology which improve the thermal efficiency greatly.
Governing system: advanced governing methods are used for high control precision and fast response speed and which also has the electronic over-speed trip function, load shedding trip function, as well as auto start, grid connection and on-load function.
Rotor: we have shrink-on rotor and solid forging structure rotor which are all processed by Mitsubishi Planer machine and adjusted by vacuum high speed dynamic balancing machine to make sure the vibration of each position of bearing is in good state when the Steam Turbine running. Small vibration of the rotor we produced is a distinctive characteristic of our products.
Condenser: the stainless steel screwed pipe is used as heat exchanger with good anti- pollution ability and high heat-exchange efficiency. High-quality titanium tube is used when the cooling water is seawater. We use digital controlled lathe for drilling hole.
Casing: the split is processed by one-off molding technology and the precision of which can be 0.0058MM without any steam leakage. The concentric circles of the whole axis are processed by high precision turn-milling of the 5-joint axis machining center.
Diaphragm: we use qualitative carbon steel as the support and make the flow field better comply with the design via special welding technology so as to improve the internal efficiency.
Lubricating oil system: the multiple filtration technology--impurity strainer of oil tank, double bucket strainer for refined filtration, bearing inlet strainer which can be replaced during running--make the turbine oil entering the bearing bush achieve the best performance.
Control and protection system: QNP uses the Siemens microprocessor as the core of the system to ensure the stability and timeliness of signal processing. For important signal, multistage redundancy functions are introduced to ensure the safe and stable operation of equipment. Friendly interface makes operator work easily. More than 3-monthes` record of operating data can be saved by recording system and also can be extracted at any time.
3.Various layout and application
Except the general double-tier layout structure, we also developed steam turbine with single-tier and fast-installation layout structure, mainly includes:
(1)Oil tank as base plate:
The position of oil tank for Condensing Steam Turbine can be designed under the steam turbine as the base plate with the steam turbine, bearing pedestal and gear box on it which has same horizontal plane with condenser.
(2)Three platform and one station steam turbine:
Composed of steam turbine base plate, auxiliaries base plate, control base plate and centralized oil station for a convenient installation and layout at site. And the centralized pipeline will let the site more clean and tidy.
(3)Axial exhaust type
Mainly applied in 15-50MW condensing and pumping condensing high efficiency turbine. This type of steam turbine adopted single-tier arrangement, with axial exhaust directly into the condenser. Suitable for whole machine delivery, and can considerably shorten the installation period and reduce civil engineering costs.
Steam Turbines,Steam Turbine,Back Pressure Steam Turbine,High Speed Steam Turbine,High Efficiency Steam Turbine,Extraction Condensing Steam Turbine Shandong Qingneng Power Co., Ltd. , http://www.steamturbine.be