industrial lord

Chapter 99 The Steam Engine Appears

Looking forward, looking forward to, the news of the steam engine came.

After finishing his meditation, Frederick immediately changed into his clothes, and went to the Blacksmithing Workshop near the University of Wessenburg with Ogilvy in a carriage.

As soon as I got off the carriage, the sound of "click, click" came from the lakeside, where many spectators had already gathered.

Schmidt led a group of people carefully observing and recording the operation of the steam engine, while someone was assembling the machine next to him. After Frederick came over, the group immediately greeted the principal.

"How's the situation?" Frederick asked Schmidt directly after waving at them.

Now the steam engine is working, the piston is reciprocating rapidly in the cylinder, the connecting rod drives the crankshaft, and the crankshaft drives the flywheel to rotate very fast.

Ogilvy stepped aside, leaving the opportunity to the students.

Schmidt said excitedly: "Report to the principal, this machine has been running continuously for a day, and there is no major problem at present!"

Frederick nodded in satisfaction, and then asked, "What's the problem?"

Schmidt scratched his head in embarrassment, and said, "It's mainly due to air leakage at some connections of the steam passage, and the precision of the threads and screw ports is still a bit poor."

Frederick said: "It's okay, it's not your fault, just improve slowly in the future."

It is true that no one else can be blamed for this matter, it was Frederick himself who made it up.

In order to reduce the volume of the steam engine, he increased the pressure of the boiler, which suddenly reached the level of at least the middle and late 19th century in his hometown, but the processing technology and workers' level did not keep up, so it is not surprising that some problems occurred.

Schmidt pointed to the most well-dressed guy in the crowd and said, "In order to solve the air leakage problem, we asked BASF for help."

Knowing that this is Schmidt's stage today, BASF has been shrinking back and pretending to be transparent.

But now that Schmidt has identified him, he will naturally appear on the stage.

"Hello principal, you look good, yo, you have grown taller recently."

As soon as BASF appeared, he greeted Frederick with a smile.

Frederick looked this guy up and down, and said with a smile: "When others get married, the lady's belly gets bigger. Why, your belly got bigger first?"

The students around were all familiar with BASF, and they burst into laughter and envy at the same time.

BASF's face was full of happiness, and he replied with a smile: "Recently, my wife bought a cookbook, and her cooking skills have improved rapidly."

Then he got down to business: "I came here to study the air leakage problem on the steam engine half a month ago. The main reason is that the gap is too large, and high-pressure steam can easily leak out."

"I provide a slime glue, which can be applied to the threads like glue and then tightened. The gaps are filled, and after solidification, it can block the steam. When it needs to be removed, it can be burned outside with a wood fire. soft."

Frederick nodded. This method is good, but he still said: "Check the condition of the glue more often to avoid damage after working for a long time."

BASF immediately pledged himself to keep an eye on it.

Frederick walked to the steam engine and observed it carefully.

This steam engine is installed on a steel frame, and there are four steel wheels under the steel frame. The structure is the same as that of a carriage. The wheels with hooks can be turned left and right for easy dragging.

The boiler is also a little different. There is an extra shell on the outside, which is transparent from the front to the back. Schmidt said that it is used for heat insulation to prevent people from being burned.

The cylinder is at the head position, installed on the side of the boiler, and the structure is quite compact.

Then Frederick discovered a new device, which was a football-thick steel pipe installed on the other side of the boiler, with a pipe connected to the boiler at one end and a high-level water tank at the other end.

"Is this for adding water?" Frederick asked.

"The principal is wise!" Schmidt replied immediately, "This is the water tank, and you can add water when the boiler is running."

"It has magic muscles in it that can press water into the boiler."

"There is a spring check valve on the pipe, which can ensure that the steam in the boiler does not come out, and the water can go in."

Frederick nodded. Although this is not the best solution, the cost and weight are much higher, but it can be used now.

However, this is only a makeshift use at present, and naturally such a water injector cannot be used when it is actually produced and sold.

Frederick stood there for a long time, frowning slightly, recalling the Bernoulli equation, which he had learned in his previous life when he was studying hydraulics.

Bernoulli's equation is
p+ρv+ρgh=C
In the formula, p is the pressure of a certain point in the fluid, v is the velocity of the fluid at that point, ρ is the density of the fluid, g is the acceleration of gravity, h is the height of the point, and C is a constant.

In a continuous system it can be expressed as

p+ρv+ρgh=p+ρv+ρgh

In other words, the greater the flow rate, the lower the pressure; the smaller the flow rate, the greater the pressure.

When water is injected, water vapor enters the water injector, because of the high flow rate and low pressure, the water near the steam port is sucked away by it, and the water is entrained by the steam and enters the water suction nozzle.

Water and steam are mixed in the mixing nozzle behind the water suction nozzle. At this time, most of the water vapor becomes condensed water, and the mixed water obtains the kinetic energy of the steam. At the same time, the pipe diameter of this section gradually shrinks like a bell mouth, and the water flow speed increases. Then Enter the nozzle at high speed.

The pipe diameter of the nozzle is also like a bell mouth, the pipe diameter is getting larger and larger, the speed of the mixed water is reduced, the pressure is increased, and finally the check valve is pushed open to enter the boiler.

Schmidt saw that the principal was lost in thought, and he was already waiting by the side with a notebook and charcoal pencils.

As soon as Frederick raised his hand, two things were offered immediately.

Now he just wrote the relationship between flow velocity and pressure. Many years later, Bernoulli's principle was renamed Wesson's fluid principle in this world.

Such a water injector has a simple structure and a complex design, and it is required that the pressure in the boiler should not be too high when used, so it is good to consider comprehensively.

Later, people tried to understand why Frederick could understand this principle at that age. The more accepted version is that he understood the relationship between pipe diameter and flow velocity from spraying water when rinsing his mouth, and saw that the wind lifted his skirt. Lay the tablecloth and understand the relationship between speed and pressure, and the last article describing Frederick's good observation of life and thinking has become a compulsory text for elementary school students.

Frederick still doesn't understand the future. At this time, after drawing the schematic diagram of the water injector, he thought it was time to find graphite to make a pen. Charcoal pens are always difficult to use.

Schmidt took the notebook with both hands like the most precious treasure in the world, and promised to start researching tomorrow.

Frederick's prestige among the scholars of Weissburg University was gradually established in this way.

He continued to study the instruments beside the boiler, and the pressure gauge, thermometer and water level gauge showed normal.

The water level gauge uses the same technology as the pea gun to show whether there are bullets in the chamber. The floating ball in the boiler connects the magic circuits at different positions, and then the corresponding crystals on the outside emit light.

The most important thing is that this steam engine uses a set of control core originally used for golem puppets, which is called "magic brain" by Ogilvy, through which it can comprehensively control the boiler pressure, air outlet pressure and water addition of the whole machine. Operation, so that an ordinary farmer can also pull the joystick to control the machine after simple learning.

Because the function is simple, the price is not high.

Schmidt whispered to Frederick: "Principal, there is a special function set up in the devil's brain."

Frederick asked curiously, "What function?"

"Self-destruct." Schmidt said in the lowest voice.

Frederick nodded very satisfied, and then said: "It's best to be able to control it remotely."

(End of this chapter)