기술관련 홈페이지에서 긁어온 것입니다.
주로 기술관련 일이 많으니 기계와 관련된 영어 키워드 넣으면 많이 나올거예요. pdf 문서도 많을거구요.
Air compressor types
While there are compressors that use
rotating impellers to generate air pressure, positive-displacement compressors
are more common and include the models used by homeowners, woodworkers,
mechanics and contractors. Here, air pressure is increased by reducing the size
of the space that contains the air. Most of the compressors you'll run across do
this job with a reciprocating piston.
Like a small internal combustion
engine, a conventional piston compressor has a crankshaft, a connecting rod and
piston, a cylinder and a valve head. The crankshaft is driven by either an
electric motor or a gas engine. While there are small models that are comprised
of just the pump and motor, most compressors have an air tank to hold a quantity
of air within a preset pressure range. The compressed air in the tank drives the
air tools, and the motor cycles on and off to automatically maintain pressure in
the tank.
At the top of the cylinder, you'll find a valve head that
holds the inlet and discharge valves. Both are simply thin metal flaps–one
mounted underneath and one mounted on top of the valve plate. As the piston
moves down, a vacuum is created above it. This allows outside air at atmospheric
pressure to push open the inlet valve and fill the area above the piston. As the
piston moves up, the air above it compresses, holds the inlet valve shut and
pushes the discharge valve open. The air moves from the discharge port to the
tank. With each stroke, more air enters the tank and the pressure rises.
Typical compressors come in 1- or 2-cylinder versions to suit the
requirements of the tools they power. On the homeowner/contractor level, most of
the 2-cylinder models operate just like single-cylinder versions, except that
there are two strokes per revolution instead of one. Some commercial 2-cylinder
compressors are 2-stage compressors–one piston pumps air into a second cylinder
that further increases pressure.
Compressors use a pressure switch to
stop the motor when tank pressure reaches a preset limit–about 125 psi for many
single-stage models. Most of the time, though, you don't need that much
pressure. Therefore, the air line will include a regulator that you set to match
the pressure requirements of the tool you're using. A gauge before the regulator
monitors tank pressure and a gauge after the regulator monitors air-line
pressure. In addition, the tank has a safety valve that opens if the pressure
switch malfunctions. The pressure switch may also incorporate an unloader valve
that reduces tank pressure when the compressor is turned off.
Many
articulated-piston compressors are oil lubricated. That is, they have an oil
bath that splash-lubricates the bearings and cylinder walls as the crank
rotates. The pistons have rings that help keep the compressed air on top of the
piston and keep the lubricating oil away from the air. Rings, though, are not
completely effective, so some oil will enter the compressed air in aerosol form.
Having oil in the air isn't necessarily a problem. Many air tools
require oiling, and inline oilers are often added to increase a uniform supply
to the tool. On the down side, these models require regular oil checks, periodic
oil changes and they must be operated on a level surface. Most of all, there are
some tools and situations that require oilfree air. Spray painting with oil in
the airstream will cause finish problems. And many new woodworking air tools
such as nailers and sanders are designed to be oilfree so there's no chance of
fouling wood surfaces with oil. While solutions to the airborne oil problem
include using an oil separator or filter in the air line, a better idea is to
use an oilfree compressor that uses permanently lubricated bearings in place of
the oil bath.
A variation on the automotive-type piston compressor is a
model that uses a one-piece piston/connecting rod. Because there is no wrist
pin, the piston leans from side to side as the eccentric journal on the shaft
moves it up and down. A seal around the piston maintains contact with the
cylinder walls and prevents air leakage.
Where air requirements are
modest, a diaphragm compressor can be effective. In this design, a membrane
between the piston and the compression chamber seals off the air and prevents
leakage.
첫댓글 이런 종류의 일들이 계속 들어오는 건가요? 사전지식이 없으면 번역이 불가능 할거같은데...다행히 이글은 제가 기계엔진쪽에 좀 지식이 있어서 해석이 좀 되긴하네요. 이정도 난이도의 문외한 작업이 다양한 분야에서 들어오면 인터넷으로 검색해서 해결해 나가야하는건가요?
물을 필요가 없는 질문은 안하시는게... 그럼 받은 일을 안한다고 하나요? 난 검색 못하겠으니까... 난 자료 못 찾아보니까... 그러면서요?
이건 난이도가 별로 높은 편이 아닌데요. 홈페이지에서 긁어온거라 양호할거예요.
하루 5,000 단어 이상의 번역을 한달 15~ 20일 정도 번역일해야 그나마 먹고사니
다양한 분야의 번역의뢰물.. 일일이 인터넷 검색하다가는 날 새지요.. .
모르는 거 검색 안하고 구글 번역에 맡기니 일 없고 일 없으니 고물 주울 시간이 나는 겁니다.
고물 주울 시간에 모르는 거 검색을 해보세요.
품질 올라가고 그럼 다음에 일 들어오고
천천히 가도 혼자 사는 몸 절대 쌀 독에 쌀 떨어지는 일 생기지 않습니다.
검색 안해도 번역할 수 있는 문건만 받던가
모르면 검색을 하던가 둘 중 하나가 정직한 거 아닌가요?
@agent 당신 뭐 하는 사람이요?..
@agent 왜 헛소리를 하오?...
전 번역프리님과 생각이 좀 달라요. 본인이 잘 아는 분야가 아닌데 리서치를 하지 않는다면 과연 좋은 번역물이 나올 수 있을까요.....? 생계 수단 이전에 번역가로서 자존심이 있다면 최상의 결과물을 위해 노력하는 것은 당연한 것이고 장기적으로도 좋은 품질이 더 생계에 도움이 되지 않을까요 ^^? 번역물에 가장 적합한 해석과 표현, 용어를 찾는 작업을 생략한다면 번역가가 번역기와 다를 것이 무엇이며 그런 사람에게 왜 번역료를 지불해야 할까요? 정말 번역가로 성공하고 싶다면 최소한의 직업 윤리는 필요합니다!!