-
高级管道工理论知识试卷
（
Senior
plumbing
theoretical
knowledge
test
）
Senior plumbing theoretical knowledge
test
(H-2) objective test
part of the answer.
Choice
question
Hydraulic pipe
bender is generally used for bending diameter
of not more than mm (A).
A.44.5 B. 45. 5 C. 46. 5 D. 47. Five
The bending
radius of
hot bending
bend
should
not
be
less than
the outer
diameter of the times (A)
A.3.5 B. 4 C. 4. 5 D. Five
The use of electric pipe bending
machine, when the bending is
larger
than the outer diameter of pipes (C) mm must be
placed
in the tube bending mandrel.
A.80 B. 70 C. 60 D. Fifty
The
general
provisions
of
pipe
bending,
tube
wall
thinning
rate
shall not exceed (C)
A.5% B. 8% C. 15% D. 20%
When the temperature changes of the
steel tube (T) less than
(B), can not
be considered compensation.
A.300C B. 320C C. 340C D. 360C
The pre tension waveform
expansion device, the tension
deviation
not more than mm (A).
A.5
B. 10 C. 15 D. Twenty
The
waveform
expansion
device
lining
one
end
of
the
sleeve
and
the
other end can be wave wall welding (C)
A. fixed B. Fixed C welding. Free
mobile D. Fixed thread
In
the square lifting telescopic device, tension
deviation
should be less than mm (B).
A. + 5 B. + 10 C. + 15 C. +
20
There are different flow
and adapt to economic flow diameter,
the diameter of the flow (A)
A. diameter B. Economic
flow C. Nominal diameter
D.
nominal flow
In
the
network
in
order
to
prevent
water
hammer
damage
caused,
for maximum flow rate (C)
A.0.5-0.7m/S B. 1-1. 6m/S C. 2. 5-3m/S
D.3-3.6m/S
For
gas,
hydrogen,
low
pressure
air
pipe,
the
general
pressure
gauge (B).
A. spring tube B. Diaphragm
type C. Acetylene type D. Oxygen
type
The rotor flowmeter is
suitable for the pressure is not more
than (B) pipeline.
A.0.098Mpa B1. 96Mpa C. 5. 88Mpa D. 6.
3Mpa
Tube
pressure
gauge
should
be
set
at
ambient
temperature
is
in
the form of U (C) within the scope of
the place.
A.10-500C B.
15-600C C. 10-600C D. 20-600C
Bourdon
tube
pressure gauge
pipeline
pressure
fluctuations
in
the measurement, indicating meter
should be dial for maximum
scale (C)
A.2/3 B. 3/4 C. 1/2 D. 1/3
Two adjacent fixed bracket
between the pipe should be in a
straight
line,
each
deviation
shall
not
be
greater
than
10m
(A)
mm.
A.5 B. 3 C. 7 D. Nine
The pipe connector shall not be placed
on the hanger, and to
support the
distance not less than mm (C), so as not to affect
the welding operation and maintenance.
A.90 B. 95 C. 100 D. One
hundred and five
17 indoor
pipe casing diameter should not be greater than
the
external diameter of the pipe
through the (C) mm.
A.8 B.
4 C. 6 D. Eight
18,
the
pipeline
through
the
underground
structures
or
basement
walls,
should
be
used
for
building
waterproof
casing,
vibration
or strict
waterproof requirements of the pipeline through
the
foundation should be set up (A)
A. flexible waterproof
casing B. Waterproof casing C. Rigid
waterproof casing
D. general cement casing
19, when the medium is water,
compressed air pipe flange
connection,
the gasket material should be (A).
A.
rubber
plate
B.
Cloth
rubber
sheet
C.
Asbestos
board
D.
Epoxy
resin board
The
top 20, the pump body is provided with a vent hole
for use
(A).
A.
irrigation B. Drainage C. Pressure measurement D.
Flow
measurement
21, a method for water suction diameter
not greater than (A)
mm pump foundation
construction.
A.300 B. 400
C. 500 D600
22, the pump
shaft and the
packing
friction
is provided
at the
(C), in order to
prevent the pump shaft packing wear.
A. B C flange gasket. Sleeve D. Bearing
23,
in
the
pipeline
trench
laying,
convenient
maintenance,
pipe
wall
and
ditch
and
gully
wall
distance
of
not
less
than
mm
(B),
and
should set up 0. 002-0. 005 slope, slope water
entrance.
A.100 B. 150 C.
200 D. Two hundred and fifty
Drainage pipe 24, contact with acid and
alkali, should
generally be used as
filling material interface (A).
A. asphalt rubber B. Cement powder C.
Asbestos cement D.
The pipe
diameter of not less than 25, the public canteens
kitchen
waste
drainage
containing
a
large
amount
of
grease
and
silt and other dry matter (B) mm, the
pipe diameter not less
than 75mm.
A.95 B. 100 C. 150 D. Two
hundred
26, water well
water seal depth is m (A), wells should be
installed on the ventilation pipe, the
bottom mud tank should
be set up.
A.0.25 B. 0. 3 C. 0. 15 D.
0. Five
27, the
introduction of pipe passes through the bearing
wall
and foundation should be left to
the top of the pipe hole, the
upper
part of the clearance of not less than m (C).
A.0.5 B. 0. 3 C. 0. 15 D.
0. One
28,
fire
water
supply
pipe
flow
rate
should
not
be
greater
than
m/S (A)
A.2.5 B. 3 C. 2 D. 3. Five
29, pipe and the heat exchanger is
connected, all uses (C)
connection.
A. welding B. Wire C.
Flange connection D. Glue connection
30, closed boiling water supply system
according to the
calculated temperature
of boiling water (D) 0C.
A.100 B. 95 C. 110 D. One hundred and
five
31, the general
heating system pressure is not less than (A)
A.0.02Mpa B0. 04Mpa C. 0.
06Mpa D. 0. 08Mpa
32, hot
water heating system pipe from beam, column and
wall
surface is not less than the
parallel method (C).
A.50mm
B. 80mm C. 100mm D. 120mm
By 33, high pressure steam heating
system (C)
Double A. for
type B. Double tube for type C, type D, a double
tube type for
34, check the pipe in Beijing costume
from the bottom side of
the expansion
tank (B) high, leading to
the boiler
room
at the
pool.
A.50mm B. 100mm C. 200mm D.
250mm
35, the radiator
assembly, should be carried out (B).
A.
pressure
test
B.
Hydraulic
test
C.
D
strength
test.
Flow
test
The
general
layout
of
the
air
compression
pipeline
36,
workshop
(A).
A. single branch type B.
Ring type C. Double branch type D.
Multi branch
37, when mixed
with air or oxygen acetylene, when reaching a
certain oxidation (A) in case of fire
explosion.
A. volume ratio
of B. When the pressure of C. When the
temperature is D. Flow
Qualified strength and tightness test
of 38, after the pipe
pressure
is
needed
(C)
pipeline
working
pressure
of
compressed
air blowing into
the tube of debris.
A.
is
not
greater
than
B.
Equal
to
C.
Not
less
than
D.
Not
equal
to
39,
for
the
homogeneous
fluid,
within
the
unit
volume
(A)
music
for density.
The quality of A. B. The
weight of C. D gravity. severe
40,
acetylene
pipeline
and
sliding
contact
line
overhead
laying,
parallel minimum
spacing is m (D).
A.0.5 B.
2 C. 0. 25 D. Three
To
determine the problem
41,
regardless of what kind of materials are stainless
steel
pipe should be the same as the
straight pipe material (V)
The
formula
for
calculating
the
total
length
of
42,
600
expected
curve bend: L= n /2 (R+r) +2L. (*)
43, hot bending, bending
angle for the pipe, the heating pipe
length, bending length plus two times
the length of the pipe
diameter (V)
44, flexible wall pipe than
pipe wall of the rigid side along
the
bolt resistance to be small. (V)
45,
the
flow
rate
under
the
condition
of
equal
by
DN50mm
in
the
pipe flow
is 2 times of DN25mm tube (x)
46, the fluid velocity is in the
pipeline resistance rate is
higher, the
smaller resistance (x)
47,
the throttle orifice is arranged on the pipeline,
sharp
edges
should
be
filled
in
part
of
small
medium
moving
direction
(V)
48,
from
the
point
to
the
pressure
differential
gauge
distance
not less than 3m or greater than 50m.
(V)
49, through the
pipeline foundation, wall, floor, roof and
other places, should be left holes (V)
Drainage pipe 50, concealed
or buried, hidden in the front to
do
irrigation experiment, can not do the irrigation
test (x)
Fan 51, most often
the wind is centrifugal fan (x)
52, the water from the tap water
factory sent along one
direction
to
form
the
user's
piping
factory,
called
the
branch
network (V)
53,
the pipeline is connected with a heat exchanger,
are
connected by welding (x)
Dry
pipe
54,
the
workshop
of
various
industrial
pipelines,
the
general
frame
should
be
ruined,
along
the
wall
or
pillar
laying,
installation
height
is
generally
not
less
than
2.
5m
(Chinese)
55, the fuel line also need to install
the compensator, the
general use of
sleeve type telescopic device (x)
56,
the
layout
of
pipeline,
and
should
be
the
main
building
and
the central line of the road parallel
or vertical laying (V)
57,
the heating system used open expansion water tank,
installed in the top of the system, and
directly communicated
with the
atmosphere. (V)
58, high
pressure steam heating system is generally used
for
double tube type (V)
59, no floor drain for water, but there
is a displacement of
(x)
60, the length of more than 1 branch.
5m, should be set in the
middle pipe
supporting hook (V)
Senior
plumbing theoretical knowledge test
(H-2) the subjective part of the answer
questions
Simple,
calculation
According to
the characteristics and scope of the heating
system, heating system which is divided
into several systems?
Answer: divided into local heating
system, central heating
system and
heating system.
What are
the common failure of hot water heating system?
Answer: there is imbalance,
local radiator, expansion tank
problems, then the home position system
return water
temperature is too low and
the water temperature is too high
heat.
If the industrial pipeline
is horizontally arranged, what is
the
order of the pipeline from top to bottom?
Answer: the order is: gas
pipe, tube, oxygen acetylene tube,
compressed air pipe, heat pipe, hot
water pipe and drainage
pipe.
What are the
characteristics of the elbow crease?
Answer: the characteristic is: the
total length of the elbow
crease elbow
and back wall before and after bending does not
bend, and bend in side wall due to
local heating and heating
bending,
creasing regularly.
Given a
rope outside the park rope diameter is 2cm,
allowable
stress by]=100N/cm2 [for the
rope under tension for how much?
Solution: S= D2 by]=3 [pi. 14 * 22 *
100=314 (N)
44
Answer: the rope tension is 314N.
This drawing questions
Carbon steel pipe thread
connection should be like?
Answer:
thread
connection,
should
be
in
the
pipe
thread
on
the
external packing,
packing note shall enter the tube in order
to avoid congestion, the hand will be
screwed into the pipe,
and
then
pipe
clamp
handle
once
tightened,
not
back.
The
wrench
tightened after appropriate, shall not
handle with a wrench
handle growth way
to tighten the screw. After the completion
of the external thread connection
filler removal, re loading
and
unloading shall not use the original packing
material, it
should be change. The
working temperature is less than 2000C
of the pipeline, the threaded joints
(pressure pipe except)
sealing material
should use teflon tape or sealing paste, but
may not be screwed into the tube
sealing material.
That type
of pipe support as shown in the picture
The graph represents the
pipe support sliding support
Senior plumbing theoretical knowledge
test
Part of the answer
skills test (H-2)
Short
answer:
First
according
to
the
different
production
methods,
which
can
be divided into several?
Answer: bend, bend, bend
stamping welding.
Measuring
instruments commonly used are there?
Answer: temperature, pressure, flow and
level measuring
instrument.
What is the fixation effect?
Answer:
not
allowed
to
have
a
fixed
support
for
pipeline
axial
displacement,
it
not
only
bear
the
weight
of
the
pipe,
but
also
control
the pipeline surface expansion and contraction
deformation.
The
pipeline construction to include what?
Answer:
pipeline
construction
preparation
including
technical
preparation, material preparation and
site preparation work.
What
is the water system room with the line?
Answer:
the
task
is:
according
to
the
requirements
of
users
of
water,
water pressure and water quality, the water from
the
water
distribution
network
transport
to
the
indoor
water
point.
Calculation and drawing problems
The diagram shows the name
of that
Analysis of the
questions: