Advantages of diesel engines is power, good economic performance

Advantages of diesel engines is power, good economic performance. Diesel engine and gasoline engine working process has many of the same places, each working cycle has gone through the intake, compression, power, exhaust four diesel fuel meter stroke. However, due to the diesel fuel is diesel fuel having a viscosity larger than that, does not readily evaporate, but the autoignition temperatures are lower than that of gasoline, thereby forming a combustible gas mixture and the ignition mode are different from the gasoline engine. The main difference is that the diesel engine cylinder pressure in the mixed gas is fired, not lit. The diesel engine when the air entering the cylinder, compressed air in the cylinder to the end, the temperature at 500-700 ℃, pressure 40-50 atm. When the piston approaches top dead center.

No oil gun oil tanker carve reasons

1, the motor reversal or transfer belt loose, broken. Should adjust power phase sequence, adjust or replace the belt tensioner;
2, oil separator fault; ① tanker filters (including conical strainer) congested. Filters should be cleaned to remove debris; ② oil separator valve stuck untapped oil tanker caused no oil. Maintenance should remove the oil valve, re-installed after clearing the debris, so that it can move up and down freely; ③ small oil separator float into the oil or fall off, resulting in a high-pressure hyperbaric chamber can also cause cng fuel dispenser ④ oil separator pressure pad superstructure damage caused by high-pressure chamber communicating with the pressure chamber, resulting in high-pressure hyperbaric chamber not form leaving no oil tanker; no oil. ⑤ hydrocarbon human separator filter pads or spring seat damage. Replace damaged gaskets; ⑥ oil separator cone valve is not shutting.
3, vane pump failure; ① vane pump relief valve is not closed. Due to a foreign body (broken shrapnel, etc.) between the relief valve stuck in the valve and valve seat, causing the fluid inside the loop always do and can not flow in the pump, repairs should remove the spool, remove foreign bodies seat; ② Because the pump with the rotor blades and the shrapnel long do high-speed operation, due to fatigue and wear, fracture, resulting in vane pump discharge increases, even when serious loss of pumping action, the pump should be cleared of debris and repair damaged leaves, shrapnel, re-installed after replacing new; ③ vane pump and gas separator combined with the surface of the pump pad breakdown or anti-loaded, can also cause vane pump high-pressure chamber communicates with the low pressure chamber, resulting in the loss of the oil discharge vane pump function; ④ vane pump loose rotor and the rotor shaft, causing the shaft idle, then repair or replace the rotor blades need to diesel hand pump

Small tanker Classification

Many types of small tankers, can be divided in different ways at several:
By tanker traffic is divided into: general and high-speed refueling tanker.
Different measurement display can be divided into: electronic display tankers, tanker and mechanical computer show that the mechanical refueling tanker; electronic dispenser with electronic counter instead of a mechanical counter, while increasing the photoelectric sensor, computer tanker is the use of computer-controlled counter, computer-controlled counter under computer control CPU in addition to completing a simple counting function, but also increased the operation and control functions, pricing function, preset amount of fuel liters or preset functions. mechanical pumpuses mechanical counter.
By proof structure is divided into: one-and explosion-proof isolation.
Measured according to the number of refueling unit is divided into: single gun tanker, tanker guns, more guns tanker;
Press the power pump types are divided into: the machine pumps and submersible pump fuel dispensing equipment
Carried by tanker into a different medium: methanol tanker, diesel tanker, gasoline tanker etc.

Persistence depends on a large tanker used daily maintenance

Safeguard vane pump, help enhance the life of a small tanker. To know nothing mechanical can permanently using it. Persistent machine using a large part depends on the process used for its maintenance is good or bad. So for those familiar with the use and maintenance of small tankers users, use and maintenance vane pump is generally no big problem. However, issues related to the use of those new users do not know where it is necessary to properly learn about.
A relief valve spring can not be adjusted too tight, or make tank calibration software pressure, noise and vibration increases, and increased pump bearing wear.
2, V-belt tension should be appropriate, the tension is too small, the belt slippery, causing oil or no oil shortage, but also easy to wear belt tensioning force is too large, the motor shaft and the pump shaft to bear additional load (axial direction of the vertical axis) increases, could easily accelerate the motor bearings,fuel monitoring systembearings and seal wear.

Precautions tanker safety inspection

1.A regular check tanker grounding, grounding device to see whether the specification, contact is good.
2, regular testing oil gun grounding resistance, grounding resistance is ≤10Ω, if abnormal, should be replaced or re-install the hose fittings.
3, regular testing whether internal tanker spill site, if any, should be resolved in a timely manner.
4, periodically check the tanker work sounds unusual, if abnormal, should be promptly excluded, then use.
5, periodically check the internal backup power supply tanker work, if not normal, it is timely maintenance.
6, regular testing tanker measurement accuracy is qualified, if unqualified, should be corrected in a timely manner to find quality inspection departments.
7, regular inspection is complete tanker seals, chip seal is intact, if not complete, it is timely to find the relevant departments or personnel to resolve.
8, regular inspection agency or self-styled refueling emergency stop mechanism is working properly, if not normal, it is timely to exclude or replace the corresponding parts.
9, regular check tanker power lines, power switches, each box is working proof, if normal, should be immediately removed or replaced corresponding parts.
10, regularly check whether the tanker exhaust flow, if unimpeded, could affect measurement accuracy electronic fuel dispenser, or endanger the safety of hydraulic pumps and other fuel nozzle manufacturers

Electric pumps selection basis

Suitable for small and medium sized pumps around auto fuel dispenser agricultural stations, supply and marketing cooperatives, factories and mines fleet vehicles, ships and other units sucking various oil, such as gasoline, diesel, kerosene, oil, food oil, paper introduces electric pumps the selection basis, as follows:
According to the process, drainage requirements, from five aspects to consider the amount of liquid delivery device head, fluid properties, piping layout and operating operating conditions;
Flow is selected barrel pump head is another important performance data for key performance players move one data device system pumps required, the general use of amplified 5% -10% margin lift for selection;
Fluid properties, including liquid media name, physical properties, chemical properties and other properties;
Piping layout condition barrel pump device system refers to the highly liquid feeding liquid feed liquid feed to the distance to fuel management solutionshead

NPSH calculations and check.

Gear pump technology introduced

Difficult technical problems, gear tank automation system inlet valve DAPIV innovative design greatly reduces the valve may be stuck in the paint, with high-power electric motor and a sturdy molded enclosure, Kan Bell sprayer can do many tasks of short duration high the amount of construction work. Nozzle is another significant factor affecting the quality of the coating. Its quality evaluation for resistance to abrasion, even atomization nozzle American worthy Bell products by carbide manufacturing, wear resistance, high coating quality, the price is relatively cheaper and more powerful gear pump diaphragm to become the shining coating machinery person! pneumatic diaphragm pump gear is a new transport machinery, is currently one of the most innovative gear pump classes. Using compressed air as a power source for a variety of corrosive liquid with particles, high viscosity, volatile, flammable, poisonous liquid can be tank level gauge systemoptical absorption Jing.