CN104330230A - Segmented tightness testing method - Google Patents

Segmented tightness testing method Download PDF

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Publication number
CN104330230A
CN104330230A CN201410559881.0A CN201410559881A CN104330230A CN 104330230 A CN104330230 A CN 104330230A CN 201410559881 A CN201410559881 A CN 201410559881A CN 104330230 A CN104330230 A CN 104330230A
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China
Prior art keywords
air
cell
segmentation
testing
iodine
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CN201410559881.0A
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Chinese (zh)
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CN104330230B (en
Inventor
谢永和
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浙江海洋学院
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Abstract

The invention discloses a segmented tightness testing method. A hole to an inner welding seam is drilled on a well-welded segmented outer wall surface; the periphery of the hole is welded with an air testing device for realizing inner air supply; a leakage detection device is arranged on a welding strip for detection a leakage point; the air testing device is connected with an air compressor via an air tube; the air inlet of the air compressor is provided with an atomizer loaded with iodine water, and thus air sucked by the air compressor contains iodine vapor for filling the welding seam with iodine-containing air; the air testing device fills air inside the welding seam, the leakage detection device moves on the welding strip for testing whether air leakage exists; and the leakage detection device is internally provided with starch water, in case of air leakage, a color is changed as the air contains iodine, and the detection effects are obvious.

Description

A kind of segmentation tightness test method

Technical field

The present invention relates to a kind of segmentation tightness test method, the tightness of welding lines in particular for segmented external and contact with sea water is tested, and belongs to technical field of ships.

Background technology

Boats and ships water filling inspection is according to different positions, and the height extremely specified by hydraulic pressure according to code requirement, makes Ship Structure and weld seam be in certain pressured state, then check the leakage scenarios of weld seam.But the method in use has following limitation: (1) must supply water and unwatering system by device, the waste of time and manpower is very large, during the cabin that particularly test volume is larger; (2) chronic to water filling in cabin and draining; (3) after test, boats and ships and building berth are moist, dirty and messy, after off-test, take framing scaffold belowdecks and ladder wet and slippery, the construction in not dry front deck and the work of correction inconvenience; (4) when the temperature of outside and water temperature difference larger time, cabin outside can produce the globule, brings certain difficulty to the judgement of defect; (5) when finding defect, the water in experimental cabin must be drained, and again pouring water after defect expressivity.In view of these defects, be widely used air tightness test at present as Some substitute, in cabin, be namely filled with the pressure of air to regulation, whether produce bubble by checking the suds of back of weld and judge weld seam whether seepage.But gas pressure test also has following limitation: (1) part cabin separately need install seal pad additional, adds workload; (2), when cabin is larger, inflationtime is longer; (3) supervisory personnel's workload is large and efficiency is low, and especially to larger cabin, it is more difficult to search defect; (4) when temperature is lower, need add freeze-point depressant in suds, operating process is complicated.The pre-official's property technology of Hull Welding is these several years shipbuilding new technologies just occurred.Within 2005, Korea S has people to propose the quality of the air tight test weld seam by the inner air flue of inspection weld seam, and this thinking has carried out practical proof Samsung Heavy Industries Ltd. subsequently, and obtains the accreditation of relevant classification society subsequently.Because the method has absolute efficiency advantage compared with the all-in-one-piece hydraulic testing and gas pressure test, other enter the large-scale shipyard of the Korea S such as heavy industry as Korea Spro and Japanese shipyard is leaped very soon, have carried out correlative study and actively application, have achieved good effect.

The pre-close property enforcement rate of the advanced shipyard close property weld seam of current Korea S and Japan is up to more than 82%, and average single ship construction period shortens more than 20%, and shipbuilding cost reduces by more than 6%.

But this technology is on the outer contacting face of body section, just can carry out the test of close property because position relationship common people will face upward head, but foam has just dripped down not a little while, therefore which detection difficulty is large, and the spray foam water duration is short, it is a urgent problem.

Summary of the invention

The object of this invention is to provide a kind of segmentation tightness test method.

The problem to be solved in the present invention is the deficiency of the tightness of welding lines test inconvenience of existing segmented external and contact with sea water.

For realizing object of the present invention, the technical solution used in the present invention is:

A kind of segmentation tightness test method, comprises the following steps:

A bores the hole leading to internal weld seams on the segmentation wall face welded, gas testing device in the peripheral solder in hole;

B installs leak-checking apparatus on welding rod;

C gas testing device is connected with air compressor machine by tracheae, the air intake opening of air compressor machine is placed with the atomizer that iodine water is housed.

D gas testing device is inflated in weld seam, and leak-checking apparatus moves on welding rod, and whether test leaks gas; Starch water is placed with, once run into gas leakage, because containing iodine in gas, variable color will occur, therefore Detection results clearly in leak-checking apparatus.

Described leak-checking apparatus comprises balloon, silica gel block, cell body, sealing strip and magnet wheel, cell body is close to segmentation wall face by magnet wheel, the sealing of segmentation wall face and cell body realizes sealing by sealing strip and moves, cell body is provided with silica gel block, silica gel block is positioned at the junction of welding rod and cell body, and balloon is connected with cell body by pipeline.

Described cell body and balloon built with starch water, for generation of chemical reaction.

Advantage of the present invention: adopt the quick-fried leakage test method in the angle of this technique, can be once through, should have market outlook widely.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of a kind of segmentation tightness test of the present invention method fillet welding leakage test method;

Fig. 2 is the enlarged diagram of a kind of segmentation tightness test of the present invention method leak-checking apparatus;

In figure: 1, segmentation wall face 2, leak-checking apparatus 3, welding rod 4, gas testing device 5, atomizer 6, air compressor machine 21, magnet wheel 22, sealing strip 23, cell body 24, silica gel block 25, balloon.

Embodiment

Below in conjunction with drawings and Examples, the present invention is further illustrated.

A kind of segmentation tightness test method, comprises the following steps:

A bores the hole leading to internal weld seams on the segmentation wall face 1 welded, and gas testing device 4 in the peripheral solder in hole, for realizing internal air feed;

B installs leak-checking apparatus 2 on welding rod 3, for detecting leak source;

C gas testing device 4 is connected with air compressor machine 6 by tracheae, the air intake opening of air compressor machine 6 is placed the atomizer 5 that iodine water is housed, just containing iodine vapor in the air that such air compressor machine sucks, for realizing the gas of butt welded seam internal strength containing iodine;

D gas testing device 4 is inflated in weld seam, and leak-checking apparatus 2 moves on welding rod 3, and whether test leaks gas; Starch water is placed with, once run into gas leakage, because containing iodine in gas, variable color will occur, therefore Detection results clearly in leak-checking apparatus 2.

Described leak-checking apparatus 2 comprises balloon 25, silica gel block 24, cell body 23, sealing strip 22, magnet wheel 21, cell body 23 is close to segmentation wall face 1 by magnet wheel 21, the sealing of segmentation wall face 1 and cell body 23 realizes sealing by sealing strip 22 and moves, cell body 23 is provided with silica gel block 24, silica gel block 24 is positioned at the junction of welding rod 3 and cell body 23, because welding rod 3 is uneven, so block up with silica gel block 24, silica gel block 24 has good elasticity, balloon 25 is connected with cell body 23 by pipeline, balloon 25 has good compressibility, even if leaked little water like this, also can supplement up at once, water one direct sum welding rod 3 is contacted, realization continues to monitor, cell body 23 is transparent material or plastics, be convenient to personal observations.

Described cell body 23 and balloon 25 built with starch water, for generation of chemical reaction.

After test is good, have leak source carry out mending-leakage after, overall outside surface will polish smooth, and surface smoothness will reach 3.2, and then performance evaluation is carried out in sampling, gets 6 pieces of samples and carries out load test

Table 4-1 strains record sheet

Can find out that every data variation is relatively more even by this table, therefore after weld seam test mending-leakage, reach good welding performance, contribute to the serviceable life of improving boats and ships.

Claims (3)

1. a segmentation tightness test method, is characterized in that: comprise the following steps:
A above bores the hole leading to internal weld seams at the segmentation wall face (1) welded, gas testing device (4) in the peripheral solder in hole;
B installs leak-checking apparatus (2) on welding rod (3);
C gas testing device (4) is connected with air compressor machine (6) by tracheae, the air intake opening of air compressor machine (6) is placed with the atomizer (5) that iodine water is housed;
D gas testing device (4) is inflated in weld seam, and leak-checking apparatus (2) is upper mobile at welding rod (3), and whether test leaks gas; Leak-checking apparatus is placed with starch water in (2), once run into gas leakage, because containing iodine in gas, variable color will occur, therefore Detection results clearly.
2. a kind of segmentation tightness test method according to claim 1, it is characterized in that: described in comprise balloon (25), silica gel block (24), cell body (23), sealing strip (22) and magnet wheel (21), cell body (23) is close to segmentation wall face (1) by magnet wheel (21), the sealing of segmentation wall face (1) and cell body (23) realizes sealing by sealing strip (22) and moves, cell body (23) is provided with silica gel block (24), silica gel block (24) is positioned at the junction of welding rod (3) and cell body (23), balloon (25) is connected with cell body (23) by pipeline.
3. a kind of segmentation tightness test method according to claim 2, is characterized in that: described cell body (23) and balloon (25) built with starch water, for generation of chemical reaction.
CN201410559881.0A 2014-10-21 2014-10-21 One kind segmentation tightness test method CN104330230B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410559881.0A CN104330230B (en) 2014-10-21 2014-10-21 One kind segmentation tightness test method

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CN201410559881.0A CN104330230B (en) 2014-10-21 2014-10-21 One kind segmentation tightness test method

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CN104330230B CN104330230B (en) 2017-07-14

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792471A (en) * 2015-04-03 2015-07-22 天津市计划生育药具管理中心 Female condom pinhole detecting method
CN105865719A (en) * 2016-03-31 2016-08-17 广西大学 Rotary compressor internal gas leakage test platform and test method thereof
CN108871693A (en) * 2018-07-04 2018-11-23 中国原子能科学研究院 A kind of leak hunting method for superconducting cyclotron vacuum chamber

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104792471A (en) * 2015-04-03 2015-07-22 天津市计划生育药具管理中心 Female condom pinhole detecting method
CN105865719A (en) * 2016-03-31 2016-08-17 广西大学 Rotary compressor internal gas leakage test platform and test method thereof
CN108871693A (en) * 2018-07-04 2018-11-23 中国原子能科学研究院 A kind of leak hunting method for superconducting cyclotron vacuum chamber
CN108871693B (en) * 2018-07-04 2019-08-06 中国原子能科学研究院 A kind of leak hunting method for superconducting cyclotron vacuum chamber

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