KR20140062843A - Leak test method for duct of deckhouse - Google Patents

Leak test method for duct of deckhouse Download PDF

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Publication number
KR20140062843A
KR20140062843A KR1020120129704A KR20120129704A KR20140062843A KR 20140062843 A KR20140062843 A KR 20140062843A KR 1020120129704 A KR1020120129704 A KR 1020120129704A KR 20120129704 A KR20120129704 A KR 20120129704A KR 20140062843 A KR20140062843 A KR 20140062843A
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KR
South Korea
Prior art keywords
duct
air
deckhouse
supply device
air supply
Prior art date
Application number
KR1020120129704A
Other languages
Korean (ko)
Inventor
신주호
Original Assignee
현대중공업 주식회사
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Application filed by 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Priority to KR1020120129704A priority Critical patent/KR20140062843A/en
Publication of KR20140062843A publication Critical patent/KR20140062843A/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0281—Multilayer duct
    • 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
    • G01M3/28—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 pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2807—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 pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes
    • G01M3/2815—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 pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipes using pressure measurements

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The present invention relates to a deck house duct leakage test method which can increase the efficiency of a deck house duct leak test operation by making it possible to perform leak test of each floor duct of a multi-layer deck house at a time.
In the deckhouse duct leakage test method according to the present invention,
Closing a duct opening portion closing an opening of each deckhouse duct;
An air supply device connecting step of connecting branch ducts branching from the main body of the air supply device to each deckhouse duct of the deckhouse where the opening portion is closed by closing the duct opening portion;
Pressure air is introduced into each deckhouse duct through each branch of the air supply device connected to each deckhouse duct by the air supply device connection step, and the internal pressure of each deckhouse duct is measured after a predetermined time elapses An air injecting step;
And a duct air leak amount checking step of measuring an amount of air leaked from each duct of the deckhouse into which air is introduced by the air feeding step, through an orifice provided in front of the air supply device.

Description

A leak test method for a duct of a deckhouse,

The present invention relates to a leakage test method, and more particularly, to a deck house duct leak test which can increase the efficiency of a leak test of a deck house duct by making it possible to perform leak test of each floor duct of a multi- ≪ / RTI >

Deckhouses of large vessels are made up of multiple layers.

Each floor of the multi-layered deck house is provided with a duct connected to the air conditioner.

At this time, when the duct is defective, cold air or hot air leaks and the air conditioner is damaged.

Therefore, after the duct is installed, the leakage test of the duct is performed to judge the ductity of the duct.

On the other hand, the conventional deck house duct leakage test was performed for each floor.

That is, after closing the opening of the deck house one-story duct, connect the air supply device to the duct, check the internal pressure of the duct after a certain time with the air being injected into the duct, dw143 has the allowable air leakage amount according to the duct internal pressure), and the air leak amount of the duct is obtained through the pressure difference value before and after the orifice installed in front of the air supply device. By comparing the allowable air leakage amount of the duct and the air leakage amount of the duct, The leakage was tested.

And the leakage test of one layer duct was completed after another layer leak test was completed.

Such a conventional deckhouse duct leakage test method can leak test each floor duct of a multi-decked deck house, but the leakage test has been conducted for each floor of the multi-deck deck house. As a result, There was a problem that the efficiency of the leak test work of the deck house duct deteriorated because it took a considerable amount of time and manpower to complete the test.

For the above reasons, in the related field, there is a way to increase the efficiency of the leak test of the deck house duct by allowing the duct leakage test of the multi-deck house to be performed within a short time, but the satisfactory results have not been obtained so far to be.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a multi-layered deck house having a duct leak test, The present invention provides a deckhouse duct leakage test method that can solve the problem that the efficiency of the house duct leakage test operation is lowered.

According to another aspect of the present invention, there is provided a deckhouse duct leakage test method,

Closing a duct opening portion closing an opening of each deckhouse duct;

An air supply device connecting step of connecting branch ducts branching from the main body of the air supply device to each deckhouse duct of the deckhouse where the opening portion is closed by closing the duct opening portion;

Pressure air is introduced into each deckhouse duct through each branch of the air supply device connected to each deckhouse duct by the air supply device connection step, and the internal pressure of each deckhouse duct is measured after a predetermined time elapses An air injecting step;

And a duct air leak amount checking step of measuring an amount of air leaked from each duct of the deckhouse into which air is introduced by the air feeding step, through an orifice provided in front of the air supply device.

Here, the step of closing the duct opening part is characterized by closing both ends and the middle ventilation hole of each deck house duct.

The inner pressure of each deckhouse duct in the air introducing step is measured through a gauge provided at any point of each branch of the air supply device.

And the air leakage amount in the duct air leakage amount checking step is obtained through a pressure difference value measured through a pressure gauge before and after the orifice installed in front of the air supply device.

In the deckhouse duct leakage test method according to the present invention, the branch ducts of the air supply device are connected to the respective floor ducts of the multi-deck deck house, and air is introduced. At the same time, the leakage test of all the ducts provided in the multi- It is possible to minimize the time and manpower required for the duct leakage test of the deckhouse, thereby improving the working efficiency of the duct leakage test of the deckhouse.

1 is a process diagram of a deckhouse duct leakage test method according to the present invention
FIG. 2 is an exemplary view showing a connection between a duct and an air supply device in a deckhouse duct leakage test method according to the present invention. FIG.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1, a deckhouse duct leakage test method according to the present invention includes a duct opening part closure step S1, an air supply device connection step S2, an air injection step S3, a duct air leakage amount confirmation step S3, Step S4.

The duct opening part closing step S1 is to close the opening of each floor duct 20 of the deck house 10.

The closing step S1 of closing the duct opening part closes the air openings at both ends and the middle of each floor duct 20 of the deck house 10. [

When the air from the air supply device 30 is introduced into the subsequent duct 20 by closing the air vents at both ends and the middle of each floor duct 20 of the deck house 10 in the duct opening portion closing step S1, The duct 20 of the deck house 10 can be leak tested since the duct 20 can be discharged only through the defective portion of the duct 20. [

The connecting step S2 of connecting the air supply unit is a step of connecting the air supply unit 30 to the floor duct 20 of the deckhouse 10 in which the opening portion is closed by the duct opening portion closing step S1 And the branch pipes 32 are connected to each other.

In the air supply device connecting step S2, the air supply device 30 is capable of supplying air to the entire floor duct 20 of the deck house 10 at a high pressure.

Therefore, it is preferable that the air supply device 30 be selected so that sufficient air can be supplied to the entire floor duct 20 of the deck house 10, 20). ≪ / RTI >

On the other hand, the air supply device 30 can be made in various ways, and a detailed description of the structure and operation of the air supply device 30 is omitted, for example, it can be a compressor or a fan.

Needless to say, the branch pipes 32 of the air supply device 30 are provided with volume dampers (not shown in the figure).

The volume damper is provided in each of the branch pipes 32 of the air supply device 30 so that the flow of air through the branch pipe 32 can be controlled through the operation of the volume damper.

The air injecting step S3 is performed by connecting the deck house 10 through the branch pipes 32 of the air supply device 30 connected to the respective floor ducts 20 of the deck house 10 by the air supply device connecting step S2 ) High-pressure air is introduced into each floor duct 20 and the pressure inside each floor duct 20 of the deck house 10 is measured after a predetermined time has elapsed.

The inner pressure measurement of each floor duct 20 of the deck house 10 in the air injecting step S3 is performed through a gauge 33 provided at an arbitrary point of each branch pipe 32 of the air supply device 30 .

The internal pressure measurement of each floor duct 20 of the deckhouse 10 is performed through the gauge 33 provided at any point of each branch 32 of the air supply device 30 in the air injecting step S3, It is possible to easily measure the inner pressure of each floor duct 20 of the deck house 10 without installing a separate pressure measuring device in each floor duct 20 of the house 10.

The duct air leakage amount checking step S4 is a step of checking an amount of air leaked from each floor duct 20 of the deckhouse 10 into which the air has been introduced by the air injecting step S3 into an orifice Not shown).

In this duct air leakage amount checking step S4, the air leakage amount can be obtained through a difference value of the pressure measured through a pressure gauge (not shown in the drawing) before and after the orifice installed in front of the air supply device 30. [

The leakage test of each floor duct 20 of the multi-layer deck house 10 through the deckhouse duct leakage test method according to the present invention will be described in detail as follows.

First, the open portion of each floor duct 20 of the multi-layer deck house 10 is closed.

That is, the duct opening portion closing step S1 according to the present invention is performed.

The multi-layer deck house 10 is provided with an air passage (not shown in the figure) and an inlet port at one end thereof and an outlet port through which air is discharged at the other end thereof. Air can be leaked only through the defective portion of the duct 20 when the air from the air supply device 30 is introduced into the subsequent duct 20 by closing the air vents at both ends and the middle.

Next, each floor duct (20) of the deck house (10) is connected to the air supply device (30).

That is, the connecting step S2 of the air supply apparatus according to the present invention is performed.

In the present invention, the air supply device 30 is provided with a branch pipe 32 in the main body 31. By connecting each floor duct 20 of the deck house 10 to each branch pipe 32, So that each floor duct 20 and the air supply device 30 can be connected.

At this time, each floor duct 20 of the deck house 10 is connected to the branch pipe 32 through the connecting pipe 34 as shown in FIG.

Deck house 10 Each floor duct 20 is connected to the branch pipe 32 through a connecting pipe 34 so that even if the air supply device 30 is separated from each floor duct 20 of the deck house 10, (10) The ducts 20 of each floor and the air supply device 30 can be connected smoothly.

It is preferable that the leading end of the connecting pipe 34 leading from the branch pipe 32 of the air supply device 30 is coupled to one opening of the duct 20.

The tip of the connecting pipe 34 leading from the branch pipe 32 of the air supply device 20 is coupled to one opening of the duct 20 to form a hole for coupling the connecting pipe 34 to the duct 20 The connection between the branch pipe 32 and the duct 20 can be facilitated.

At this time, it goes without saying that the open portion of the duct 20 to which the coupling pipe 34 is coupled is in the open state.

Next, air is introduced into each of the ducts 20.

That is, the air injection step (S3) according to the present invention is performed.

The branch pipes 32 of the air supply device 30 are connected to the respective floor ducts 20 of the deck house 10. When the air supply device 30 is operated, So that it can flow into the duct 20.

At this time, the air pressure is measured in each of the ducts 20 after the lapse of a predetermined time after the air is supplied.

The allowable air leakage amount of the duct 20 can be obtained by measuring the inner pressure of each duct 20 after a certain period of time.

Here, the measurement of the internal pressure of the duct 20 may be performed through a gauge 33 provided at any point of the branch pipe 32 of the air supply device 30.

Next, the amount of air leaked from each duct 20 is measured.

That is, the duct air leakage amount checking step (S4) according to the present invention is performed.

A pressure gauge is provided before and after the orifice. The pressure is measured through a pressure gauge before and after the orifice, and the difference in pressure is calculated to determine the air leakage amount of each duct (20) .

At this time, the soundness can be judged by comparing the air leakage amount of the duct 20 with the allowable air leakage amount.

That is, when the air leakage amount of the duct 20 is within the range of the allowable air leakage amount, it can be judged that the duct 20 is sound. If the air leakage amount of the duct 20 is not less than the allowable air leakage amount, ) Can be judged to be defective.

Since the defective duct 20 can be judged to be defective through the leakage test, it is possible to replace and repair the defective duct 20, so that the cold air or hot air can flow on the duct 20 without loss in actual conditions after the test .

As described above, in the deckhouse duct leakage test method according to the present invention, the branch pipes 32 of the air supply device 30 are connected to the respective floor ducts 20 of the deck house 10, The leakage test of all the ducts 20 provided in the multi-deck house 10 can be performed on the deck house 10, so that the time and the manpower required for the leakage test of the duct 20 of the deck house 10 can be minimized, The leakage test operation efficiency of the duct 20 can be improved.

 While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

10: Deckhouse 20: Duct
30: air supply device 31: main body
32: Branch 33: Gauge
34: Connector S1: Closing the duct opening
S2: Connecting the air supply unit Step S3:
S4: Checking duct air leakage level

Claims (4)

Closing a duct opening portion closing an opening of each deckhouse duct;
An air supply device connecting step of connecting branch ducts branching from the main body of the air supply device to each deckhouse duct of the deckhouse where the opening portion is closed by closing the duct opening portion;
Pressure air is introduced into each deckhouse duct through each branch of the air supply device connected to each deckhouse duct by the air supply device connection step, and the internal pressure of each deckhouse duct is measured after a predetermined time elapses An air injecting step;
And a duct air leak amount checking step of measuring an amount of air leaked from each duct of the deckhouse into which air is introduced by the air injecting step through an orifice provided in front of the air supply device. The method according to claim 1,
Wherein the step of closing the duct opening part closes the ventilation holes at both ends and the middle of each deckhouse duct. The method according to claim 1,
Wherein the measurement of the internal pressure of each floor duct of the deckhouse in the air injecting step is performed through a gauge provided at an arbitrary point of each branch of the air supply device. The method according to claim 1,
Wherein the air leakage amount in the duct air leakage amount checking step is obtained through a difference in pressure measured through a pressure gauge before and after the orifice installed in front of the air supply device.
KR1020120129704A 2012-11-15 2012-11-15 Leak test method for duct of deckhouse KR20140062843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120129704A KR20140062843A (en) 2012-11-15 2012-11-15 Leak test method for duct of deckhouse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120129704A KR20140062843A (en) 2012-11-15 2012-11-15 Leak test method for duct of deckhouse

Publications (1)

Publication Number Publication Date
KR20140062843A true KR20140062843A (en) 2014-05-26

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KR1020120129704A KR20140062843A (en) 2012-11-15 2012-11-15 Leak test method for duct of deckhouse

Country Status (1)

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KR (1) KR20140062843A (en)

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