NZ720071B - Air-tightness test equipment for turbine reduction gearbox - Google Patents
Air-tightness test equipment for turbine reduction gearboxInfo
- Publication number
- NZ720071B NZ720071B NZ720071A NZ72007116A NZ720071B NZ 720071 B NZ720071 B NZ 720071B NZ 720071 A NZ720071 A NZ 720071A NZ 72007116 A NZ72007116 A NZ 72007116A NZ 720071 B NZ720071 B NZ 720071B
- Authority
- NZ
- New Zealand
- Prior art keywords
- gas pressure
- reduction gearbox
- controller
- turbine reduction
- compression cylinder
- Prior art date
Links
- 238000007906 compression Methods 0.000 claims abstract description 88
- 238000001914 filtration Methods 0.000 claims abstract description 6
- 230000000875 corresponding Effects 0.000 claims abstract description 5
- 230000001105 regulatory Effects 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/36—Power transmission arrangements between the different shafts of the gas turbine plant, or between the gas-turbine plant and the power user
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
Abstract
The present invention discloses air-tightness test equipment for a turbine reduction gearbox, comprising a base, characterized in that a product mounting plate is arranged and fixed on the base by a support frame, the product mounting plate is provided with a product positioning slot having an opening on its one side; a compression cylinder is arranged over the product mounting plate by a cylinder support plate, the compression cylinder is vertically arranged, and a piston rod of the compression cylinder faces downward and a sealed connector corresponding to the upper part of the product positioning slot is fixed at the lower end of the piston rod; the sealed connector has a cavity in which an inflator is arranged, and the inflator is connected with an inflator bump by a pipeline; the inflator pump is provided with a gas filtration device, the pipeline is provided with a gas valve, and a gas pressure sensor is arranged on the pipeline between the gas valve and the inflator; the compression cylinder, the inflator bump, the gas valve and the gas pressure sensor are connected to a controller, respectively. ng on its one side; a compression cylinder is arranged over the product mounting plate by a cylinder support plate, the compression cylinder is vertically arranged, and a piston rod of the compression cylinder faces downward and a sealed connector corresponding to the upper part of the product positioning slot is fixed at the lower end of the piston rod; the sealed connector has a cavity in which an inflator is arranged, and the inflator is connected with an inflator bump by a pipeline; the inflator pump is provided with a gas filtration device, the pipeline is provided with a gas valve, and a gas pressure sensor is arranged on the pipeline between the gas valve and the inflator; the compression cylinder, the inflator bump, the gas valve and the gas pressure sensor are connected to a controller, respectively.
Description
AIR-TIGHTNESS TEST EQUIPMENT FOR TURBINE REDUCTION
GEARBOX
Technical Field of the Invention
The present invention relates to the field of test equipment, and in
particular to air-tightness test equipment for a turbine reduction gearbox.
Background of the Invention
During the usage of a turbine reduction gearbox, sometimes, oil leakage
may be caused by defects such as the presence of sand holes, fine cracks and
the like on the gearbox body or by insufficient tightness of the cover. In order to
avoid the potential oil leakage of a turbine reduction gearbox during the
operation, it is desired to perform an air-tightness test on the turbine reduction
gearbox. In order to test the air-tightness of a turbine reduction gearbox,
testers usually tests the air-tightness of the turbine reduction gearbox by
immersing it in water. However, since whether the gearbox is tight or not
depends upon a long period of observation by the testers, the automatic
testing cannot be realized, and the labor intensity of the testers is increased.
Sometimes, a component under test may be mistakenly regarded as qualified
when bubbles are adsorbed on the bottom of the turbine reduction gearbox.
Furthermore, immersing in water may cause adverse effects, for example,
rusting of irony members such as worm wheels and worms.
Summary of the Invention
An objective of the present invention is to provide air-tightness test
equipment for a turbine reduction gearbox, which can perform an air-tightness
test on a turbine reduction gearbox, with easy and convenient test mode and
high test precision.
To achieve this objective, the present invention adopts the following
technical solutions. Air-tightness test equipment for a turbine reduction
gearbox is provided, including a base; a product mounting plate is arranged
and fixed on the base by a support frame, the product mounting plate is
provided with a product positioning slot having an opening on its one side; a
compression cylinder is arranged over the product mounting plate by a cylinder
support plate, the compression cylinder is vertically arranged, and a piston rod
of the compression cylinder faces downward and a sealed connector
corresponding to the upper part of the product positioning slot is fixed at the
lower end of the piston rod; the sealed connector has a cavity in which an
inflator is arranged, and the inflator is connected with an inflator bump by a
pipeline; the inflator pump is provided with a gas filtration device, the pipeline is
provided with a gas valve, and a gas pressure sensor is arranged on the
pipeline between the gas valve and the inflator; and the compression cylinder,
the inflator bump, the gas valve and the gas pressure sensor are connected to
a controller, respectively, and the controller can control the compression
cylinder, the inflator bump, the gas valve and the gas pressure sensor.
The test process of the turbine reduction gearbox is as follows: the turbine
reduction gearbox housing is fixed by the positioning slot and the compression
cylinder, air and pressure are applied into the turbine reduction gearbox
housing by the inflator pump, the gas pressure is hold by the gas valve, and a
gas pressure value after the gas pressure holding is obtained by the gas
pressure sensor. The gas pressure value after the gas pressure holding is
compared with a set standard gas pressure value after the gas pressure
holding, so as to test the air-tightness of the turbine reduction gearbox. The
compression cylinder, the inflator pump, the gas valve and the gas pressure
sensor are connected with the controller, respectively, and are controlled by
the controller so that the test automation of the turbine reduction gearbox can
be realized. The inflator pump is provided with a gas filtration device by which
impurities in air can be prevented from entering the turbine reduction gearbox
to damage the worm wheel, the worm and the housing.
Preferably, the control process of the controller is as follows: a sealing
washer is placed inside a flange structure of a turbine reduction gearbox
housing; the turbine reduction gearbox housing is clamped on the product
mounting plate by an opening of the product positioning slot; the compression
cylinder is started by the controller, so that the sealed connector of the
compression cylinder moves downward to resist against the sealing washer
inside the flange structure and compress the turbine reduction gearbox on the
product mounting plate; then, the controller controls the inflator bump to allow
the inflator to inflate the turbine reduction gearbox, and the controller controls
the gas valve to close after a duration of a so as to hold the gas pressure for a
duration of b; and a test result is obtained by the gas pressure sensor at the
end of gas pressure holding. The sealing washer can ensure the precision of
the air-tightness test of the turbine reduction gearbox and prevent the air
entering the turbine reduction gearbox from excessively running away. The
air-tightness test of the turbine reduction gearbox can be completed by the
controller as long as a product is fixed, which is easy and convenient.
Preferably, the gas pressure sensor is connected with a buzzer by the
controller and the buzzer is controlled by an electrical signal which is
transferred to the controller by the gas pressure sensor.
An upper limit and a lower limit of a gas pressure standard in the turbine
reduction gearbox housing after the gas pressure holding are set by the
controller, when a gas pressure value measured by the gas pressure sensor
after the gas pressure holding is lower than the lower limit, the buzzer will alert,
which indicates that the air-tightness of the turbine reduction gearbox housing
is not qualified; and when the gas pressure value measured by the gas
pressure sensor after the gas pressure holding is between the upper limit and
the lower limit, the buzzer will not alert, which indicates that the air-tightness of
the turbine reduction gearbox housing is qualified. A signal indicating the gas
pressure inside the turbine reduction gearbox housing is transferred to the
controller by the gas pressure sensor after the gas pressure holding, and the
controller controls the buzzer upon receiving the signal. The alerting sound can
be set to be sharp and urgent.
Preferably, the gas pressure sensor is connected with a real-time gas
pressure value display device, and the real-time gas pressure value display
device is a digital real-time gas pressure display meter. The tester can know
the process of the inflating and the gas pressure holding by the digital real-time
gas pressure display meter. Whether the air-tightness of the turbine reduction
gearbox is qualified or not can be determined by comparing the displayed gas
pressure value and the standard gas pressure value after the gas pressure
holding.
Preferably, the cylinder support plate is located on the left and right sides
of the sealed connector and a vertically arranged guide slot is provided on the
cylinder support plate; a compression cylinder guide connection rod is fixed on
the left and right sides of the sealed connector; and one end of the
compression cylinder guide connection rod is located in the guide slot. The
arrangement mentioned above can ensure the alignment of the sealed
connector and the sealing washer in the flange structure, so that the test
precision of the present invention is ensured.
Preferably, the controller is a programmable logic controller; an inflation
duration of the inflator bump, a gas pressure holding duration after closing the
gas valve, and an upper limit and a lower limit of gas pressure after the gas
pressure holding can be set by the programmable logic controller; and the
programmable logic controller is connected with a time display relay which can
display the inflation duration and the gas pressure holding duration.
Preferably, the base is provided with a switch control box, the switch
control box is provided with a pneumatic switch and an emergency switch, and
the pneumatic switch and the emergency switch are connected with the
controller; the pneumatic switch can control the starting of the compression
cylinder, the inflator pump and the gas valve by the controller; and the
emergency switch can control the stopping of the inflator pump, the resetting of
the gas valve and the resetting of the compression cylinder by the controller.
Preferably, the gas pressure sensor is connected with an indicator light by
the controller, the indicator light is controlled by an electrical signal which is
transferred to the controller by the gas pressure sensor, and the indicator light
at least includes a red light and a green light.
An upper limit and a lower limit of the gas pressure standard in the turbine
reduction gearbox housing after the gas pressure holding are set by the
controller; when the gas pressure value in the turbine reduction gearbox
housing measured by the gas pressure sensor after the gas pressure holding
is lower than the lower limit, the red light will turn on, which indicates that the
air-tightness of the turbine reduction gearbox housing is not qualified; and
when the gas pressure value in the turbine reduction gearbox housing
measured by the gas pressure sensor after the gas pressure holding is
between the upper limit and the lower limit, the green light will turn on, which
indicates that the air-tightness of the turbine reduction gearbox housing is
qualified. The buzzer and the indicator light can vividly display the test results.
The labor intensity of the testers is alleviated, and it is not required to compare
the gas pressure value by testers.
Preferably, the compression cylinder is provided with a compression
pressure sensor which can measure the compression pressure; the
compression pressure sensor is connected with a pointer-type compression
pressure meter; and the compression cylinder is connected with a
compression pressure regulating valve by which the amount of compression
pressure of the compression cylinder can be regulated.
Preferably, the inflator pump is provided with an inflation pressure sensor
which can measure the inflation pressure; the inflation pressure sensor is
connected with a pointer-type inflation pressure meter; and the inflator pump is
connected with an inflation pressure regulating valve by which the amount of
inflation pressure of the inflation pressure regulating valve can be regulated.
The tester can allow the compression cylinder to better compress and fix
the turbine reduction gearbox by the compression pressure sensor and the
compression pressure regulating valve, so that the compression of the sealing
washer can be ensured, the gas leakage loss and the like caused by external
factors can be eliminated, and the precision of the air-tightness test of the
present invention can be improved; the pointer-type inflation pressure meter
and the inflation pressure regulating valve can ensure the precision of the
verified air-intake data; and a high-precision regulating valve which can be
controlled to 0.001 Mpa can be selected as the compression pressure
regulating valve and the inflation pressure regulating valve. The present
invention is used for testing the air-tightness of a turbine reduction gearbox to
avoid water leakage and oil leakage of a turbine reduction gearbox, and has
the advantages of easy and convenient test and high test precision.
Brief Description of the Drawings
Fig. 1 is a schematic structure diagram of the present invention;
Fig. 2 is another schematic structure diagram of the present invention;
Fig. 3 is a sectional view of a test cavity portion according to the present
invention; and
Fig. 4 is a schematic diagram for fixing the turbine reduction gearbox
according to the present invention.
Detailed Description of the Invention
As shown in Fig. 1, air-tightness test equipment for a turbine reduction
gearbox includes a base 1; an equipment housing 2 covers the base 1; a test
cavity 21, a switch control box 3 and a control display panel 4 are arranged on
the equipment housing 2; and an alarm 5 is arranged on the top right side of
the equipment housing 2. The alarm 5 of the present invention includes an
indicator light and a buzzer, wherein the indicator light includes a red display
light, a yellow display light and a green display light.
As shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a product mounting plate 10 is
arranged inside the test cavity in the present invention, the product mounting
plate 10 is provided with a product positioning slot 101 having an opening, on
its one side, matched with a flange structure of the turbine reduction gearbox.
A compression cylinder 11 which is mounted and fixed by a cylinder support
plate 111 is arranged over the product mounting plate 10, the compression
cylinder 11 is vertically arranged, and a piston rod 112 of the compression
cylinder 11 faces downward and a sealed connector 12 corresponding to the
upper part of the product positioning slot 101 is fixed at the lower end of the
piston rod 112.The cylinder support plate 111 is located on the left and right
sides of the sealed connector 12 and a vertically arranged guide slot is
provided on the cylinder support plate 111; a compression cylinder guide
connection rod 121 is fixed on the left and right sides of the sealed connector
12; and one end of the compression cylinder guide connection rod 121 is
located in the guide slot. The sealed connector 12 has a cavity in which an
inflator is arranged, and the inflator is connected with an inflator bump outside
the equipment housing by a pipeline. The inflator pump is provided with a gas
filtration device, the pipeline is provided with a gas valve, and a gas pressure
sensor is arranged on the pipeline between the gas valve and the inflator. The
compression cylinder, the inflator bump, the gas valve and the gas pressure
sensor are connected to and controlled by a controller, respectively. The gas
pressure sensor, the compression cylinder, the gas valve and the controller are
arranged inside the equipment housing, the controller is a programmable logic
controller, and the inflator pump is a high-pressure inflator pump. The
controller can allow the buzzer to sound urgently, and turn on or switch
between the yellow display light, the red display light and the green display
light.
The switch control box 3 of the present invention is provided with a
pneumatic switch 31 and an emergency switch 32, and the pneumatic switch
31 and the emergency switch 32 are connected with the controller; the
pneumatic switch31 can control the starting of the compression cylinder 11, the
inflator pump and the gas valve by the controller; and the emergency switch 32
can control the stopping of the inflator pump, the resetting of the gas valve and
the resetting of the compression cylinder by the controller.
A pointer-type inflation pressure meter 13, a time display relay 14, a digital
real-time gas pressure display meter 15 and a pointer-type compression
pressure meter 16 are arranged on the control display panel 4 of the present
invention successively from left to right; and an inflation pressure regulating
valve 17 is arranged below the pointer-type inflation pressure meter 13 and a
compression pressure regulating valve 18 is arranged below the pointer-type
compression pressure meter 16.
The compression cylinder is provided with a compression pressure sensor
which can measure the compression pressure applied downward to the
sealing washer by the sealed connector 12 below the compression cylinder 11;
the compression pressure sensor is connected with the pointer-type
compression pressure meter 16; the pointer-type compression pressure meter
16 can display the value of the compression pressure measured by the
compression pressure sensor, and the amount of the compression pressure of
the compression cylinder 11 can be regulated by the compression pressure
regulating valve 18.
The inflator pump is provided with an inflation pressure sensor which can
measure the inflation pressure; the inflation pressure sensor is connected with
a pointer-type inflation pressure meter 13; and the pointer-type inflation
pressure meter 13 can display the value of the inflation pressure measured by
the inflation pressure sensor, and the amount of the inflation pressure of the
inflator pump can be regulated by an inflation pressure regulating valve 17.
The control process of the controller is as follows: a sealing washer is
placed inside a flange structure of a turbine reduction gearbox housing; the
turbine reduction gearbox housing is clamped on the product mounting plate
by an opening of the product positioning slot; the pneumatic switch 31 is
pressed down; the controller controls the compression cylinder 11 to start so
that the sealed connector 12 of the compression cylinder 11 moves downward
to resist against the sealing washer 7 inside the flange structure 6 and
compress the turbine reduction gearbox on the product mounting plate 10;
then, the controller controls the inflator bump to allow the inflator to inflate the
turbine reduction gearbox, and the controller controls the gas valve to close
after a duration of a to hold the pressure for a duration of b; the gas pressure
value inside the turbine reduction gearbox housing is tested by the gas
pressure sensor after the gas pressure holding; and according to different
values, the indicator light of the alarm is controlled to turn on and the buzzer is
controlled to sound.
The operation process of the present invention is as follows: (1) the power
supply is turned on; an upper limit and a lower limit of the gas pressure
standard in the turbine reduction gearbox housing after the gas pressure
holding are set by the controller; the inflator pump is set by the controller to
start operating so that the yellow display light of the indicator light of the alarm
turns on; the value of the gas pressure after the gas pressure holding is set by
the controller below the lower limit, so that the buzzer sounds and the indicator
light switches from the yellow display light to the red display light; the value of
the gas pressure after the gas pressure holding is set by the controller
between the upper limit and the lower limit, so that the indicator light switches
from the yellow display light to the green display light; the inflation duration is
set by the controller to be five seconds and the gas pressure holding duration
to be twenty seconds; the compression pressure value of the compression
cylinder 11 when compressing downward is set by the compression pressure
regulating valve 18; the inflation pressure value of the inflator pump is set by
the inflation pressure regulating valve 17; (2) the sealing washer 7 is placed
inside the flange structure 6 of the turbine reduction gearbox housing, and the
turbine reduction gearbox housing is clamped on the product mounting plate
by an opening of the product positioning slot 101; (3) the tester presses the
pneumatic switch down and the air-tightness test equipment of the present
invention starts to operate; the sealed connector 12 moves downward to resist
against the sealing washer and continuously moves downward to compress
the turbine reduction gearbox housing onto the product mounting plate 10;
during this process, the pointer-type compression pressure meter rotates, the
inflator pump starts to inflate and the yellow display light of the indicator light
turns on; during this process, the pointer-type inflation pressure meter rotates,
the digital real-time gas pressure display meter starts to display the gas
pressure inside the turbine reduction gearbox housing, inflation is performed
for a duration of five seconds, the gas valve closes and the gas pressure is
hold for a duration of twenty seconds, and then the value of the gas pressure
inside the turbine reduction gearbox housing is tested by the gas pressure
sensor; when the gas pressure value after the gas pressure holding is below
the lower limit, the buzzer sounds and the indicator light switches from the
yellow display light to the red display light; when the gas pressure value after
the gas pressure holding is between the lower limit and the upper limit, the
indicator light switches from the yellow display light to the green display light;
(4) the pneumatic switch 31 is pressed down, the gas valve is opened for
pressure relief, and at the end of pressure relief, the sealed connector 12 of
the compression cylinder 11 moves upward; the tester takes the turbine
reduction gearbox housing and the sealing washer 7 out and sorts the turbine
reduction gearbox; and (5) the steps in (2), (3) and (4) are repeated to perform
an air-tightness test on a next turbine reduction gearbox.
In an emergency, the tester can press the emergency switch down. The
inflator pump stops inflating and the turbine reduction gearbox housing starts
to discharging. At the end of discharging, the compression cylinder resets.
Claims (10)
1. Air-tightness test equipment for a turbine reduction gearbox, comprising a base, characterized in that a product mounting plate is arranged and fixed on the base by a support frame, the product mounting plate is provided with a product positioning slot having an opening on its one side; a compression cylinder is arranged over the product mounting plate by a cylinder support plate, the compression cylinder is vertically arranged, and a piston rod of the compression cylinder faces downward and a sealed connector corresponding to the upper part of the product positioning slot is fixed at the lower end of the piston rod; the sealed connector has a cavity in which an inflator is arranged, and the inflator is connected with an inflator pump by a pipeline; the inflator pump is provided with a gas filtration device, the pipeline is provided with a gas valve, and a gas pressure sensor is arranged on the pipeline between the gas valve and the inflator; the compression cylinder, the inflator pump, the gas valve and the gas pressure sensor are connected to a controller, respectively, and the controller can control the compression cylinder, the inflator pump, the gas valve and the gas pressure sensor.
2. The air-tightness test equipment for a turbine reduction gearbox according to claim 1, characterized in that a control process of the controller is as follows: a sealing washer is placed inside a flange structure of a turbine reduction gearbox housing; the compression cylinder is started by the controller, so that the sealed connector of the compression cylinder moves downward to resist against the sealing washer inside the flange structure and compress the turbine reduction gearbox on the product mounting plate, and the turbine reduction gearbox housing is clamped on the product mounting plate between the opening of the product positioning slot and the sealed connector of the compression cylinder; then, the controller controls the inflator pump to allow the inflator to inflate the turbine reduction gearbox, and the controller controls the gas valve to close after a duration of a to hold the pressure for a duration of b; and a test result is obtained by the gas pressure sensor at the end of gas pressure holding.
3. The air-tightness test equipment for a turbine reduction gearbox according to claim 1 or 2, characterized in that the gas pressure sensor is connected with a buzzer by the controller and the buzzer is controlled by an electrical signal which is transferred to the controller by the gas pressure sensor; an upper limit and a lower limit of a gas pressure standard in the turbine reduction gearbox housing after the gas pressure holding are set by the controller, when a pressure value measured by the gas pressure sensor after the gas pressure holding is lower than the lower limit, the buzzer will alert, which indicates that the air-tightness of the turbine reduction gearbox housing is not qualified; and when the gas pressure value measured by the gas pressure sensor after the gas pressure holding is between the upper limit and the lower limit, the buzzer will not alert, which indicates that the air-tightness of the turbine reduction gearbox housing is qualified.
4. The air-tightness test equipment for a turbine reduction gearbox according to claim 1 or 2 or 3, characterized in that the gas pressure sensor is connected with a real- time gas pressure value display device, and the real-time gas pressure value display device is a digital real-time gas pressure display meter.
5. The air-tightness test equipment for a turbine reduction gearbox according to claim 1, characterized in that the cylinder support plate is located on the left and right sides of the sealed connector and a vertically arranged guide slot is provided on the cylinder support plate; a compression cylinder guide connection rod is fixed on the left and right sides of the sealed connector; and one end of the compression cylinder guide connection rod is located in the guide slot.
6. The air-tightness test equipment for a turbine reduction gearbox according to claim 1, characterized in that the controller is a programmable logic controller; an inflation duration of the inflator pump, a gas pressure holding duration after closing the gas valve, and an upper limit and a lower limit of pressure after the gas pressure holding can be set by the programmable logic controller; and the programmable logic controller is connected with a time display relay which can display the inflation duration and the gas pressure holding duration.
7. The air-tightness test equipment for a turbine reduction gearbox according to claim 1, characterized in that the base is provided with a switch control box, the switch control box is provided with a pneumatic switch and an emergency switch, and the pneumatic switch and the emergency switch are connected with the controller; the pneumatic switch can control the starting of the compression cylinder, the inflator pump and the gas valve by the controller; and the emergency switch can control the stopping of the inflator pump, the resetting of the gas valve and the resetting of the compression cylinder by the controller.
8. The air-tightness test equipment for a turbine reduction gearbox according to claim 1, characterized in that the gas pressure sensor is connected with an indicator light by the controller, the indicator light is controlled by an electrical signal which is transferred to the controller by the gas pressure sensor, and the indicator light at least comprises a red light and a green light; an upper limit and a lower limit of the gas pressure standard in the turbine reduction gearbox housing after the gas pressure holding are set by the controller; when the gas pressure value in the turbine reduction gearbox housing measured by the gas pressure sensor after the gas pressure holding is lower than the lower limit, the red light will turn on, which indicates that the air- tightness of the turbine reduction gearbox housing is not qualified; and when the gas pressure value in the turbine reduction gearbox housing measured by the gas pressure sensor after the gas pressure holding is between the upper limit and the lower limit, the green light will turn on, which indicates that the air-tightness of the turbine reduction gearbox housing is qualified.
9. The air-tightness test equipment for a turbine reduction gearbox according to claim 1, characterized in that the compression cylinder is provided with a compression pressure sensor which can measure the compression pressure; the compression pressure sensor is connected with a pointer-type compression pressure meter; and the compression cylinder is connected with a compression pressure regulating valve by which the amount of compression pressure of the compression cylinder can be regulated.
10. The air-tightness test equipment for a turbine reduction gearbox according to claim 1, characterized in that the inflator pump is provided with an inflation pressure sensor which can measure the inflation pressure; the inflation pressure sensor is connected with a pointer-type inflation pressure meter; and the inflator pump is connected with an inflation pressure regulating valve by which the amount of inflation pressure of the inflator pump can be regulated.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510534368.0 | 2015-08-27 | ||
| CN201510534368.0A CN105136407A (en) | 2015-08-27 | 2015-08-27 | Worm gear box tightness test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NZ720071A NZ720071A (en) | 2017-06-30 |
| NZ720071B true NZ720071B (en) | 2017-10-03 |
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