CN104990674A - Leakproofness detection method for drain plug of ship bottom in ship construction - Google Patents
Leakproofness detection method for drain plug of ship bottom in ship construction Download PDFInfo
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- CN104990674A CN104990674A CN201510374825.4A CN201510374825A CN104990674A CN 104990674 A CN104990674 A CN 104990674A CN 201510374825 A CN201510374825 A CN 201510374825A CN 104990674 A CN104990674 A CN 104990674A
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Abstract
The invention relates to a leakproofness detection method for a drain plug of a ship bottom in the ship construction. The method comprises steps of firstly determining test pressure for leakproofness detection of the drain plug; covering the drain plug of the ship bottom with a special detection device by means of a lifting-up device; injecting compressed air in the special detection device so as to reach the abovementioned test pressure; and spraying a soap liquid at one side of the internal of a drain plug ship body. According to the invention, under a precondition that the paint of a ship body is not destroyed, the leakproofness condition of the drain plug of the ship bottom can be rapidly detected, secondary docking of the ship is prevented, and the ship construction period is ensured.
Description
Technical field
The present invention relates to shipbuilding, being related specifically to a kind of method for detecting the close property of hull bottom drainage plug, and can be applicable to other places needing close property to detect.
Background technology
Under normal circumstances, the close property of hull drainage plug itself has carried out the detection of close property after manufacture, obtains the accreditation of associated mechanisms, in shipbuilding process only need with ship hull plate structure welding, then detect the weld seam between itself and outside plate.The weld seam of drainage plug and ship hull plate adopts the mode vacuumized to carry out, and detected pressures is-0.02MPa ~-0.026MPa.But the close property of the drainage plug purchased cannot be guaranteed, if boats and ships find that drainage is plugged with seepage in trial voyage or flight process, needing lies up again changes, and carries out the detection of close property to the drainage plug changed.Boats and ships secondary lies up not only affects ship building period, shipyard is made to bear larger economic loss, the whole production node plan of company will be upset to a great extent, the close property how detecting drainage plug before ship undocking seems particularly important, and the routine that usually can adopt close property detection method is as follows:
One, adopt the method for structural test, namely toward water filling in the ballast tank at hull bottom drainage plug place, until reach the pressure values of this cabin structure test determination, then see that whether hull bottom drainage plug outside leaks generation, judges the close implementations of drainage plug with this.Structural test completes usually in trial voyage or flight process, of such a size ballast tank made a strength test in the dock stage, there is certain danger coefficient, be easy to cause outer panel structure to be out of shape, secondly higher to the integrity demands of structure, and the manpower and materials that the consumption of strength test process need is a large amount of, extend the dock cycle to a great extent.
Two, adopt the method for cabin inflation, namely in ballast tank, carry out cabin inflation, after reaching authorised pressure, the outside method carrying out spraying liquid soap of drainage plug detects alow.There is two problems in the method: the first, and dock stage cabin structure integrality is poor, and carrying out cabin inflation has certain difficulty, and cabin inflation completed in the harbour stage under normal circumstances.Second, require as 0.015Mpa ~ 0.02Mpa for the pressure values of cabin inflation in classification society rule, under normal circumstances, the drinking water height of these class boats and ships such as bulk freighter, oil carrier, container ship is more than 10 meters, according to pressure formula P=ρ gh, i.e. hull bottom drainage plug more than pressure 0.1Mpa, and according to security consideration, the pressure size that namely cabin is inflated cannot meet the actual pressure size that drainage plug bears in navigation process.
Summary of the invention
The object of the invention is to overcome above-mentioned the deficiencies in the prior art, provide in a kind of shipbuilding and detect the method for the close property of hull bottom drainage plug in the dock stage.Drainage plug provided by the invention close property detection method, under the prerequisite not destroying hull paint, can detect the close implementations of hull bottom drainage plug fast, avoid boats and ships secondary to lie up, ensure that ship building period.
In order to reach foregoing invention object, technical scheme provided by the invention is as follows:
For detecting the method for the close property of hull bottom drainage plug in a kind of shipbuilding, it is characterized in that, the method first determines the testing pressure that the close property of drainage plug detects, with jacking apparatus, special detection device is covered on the outside of hull bottom drainage plug again, in special detection device, inject the pressurized air reaching above-mentioned testing pressure, detect at drainage plug hull interior side spraying liquid soap and whether leak gas.
The present invention is for detecting in the method for the close property of hull bottom drainage plug, and its detailed step is as follows:
The first step, determine testing pressure, the relation between the height of ballast water and designed draft is loaded by analyzing ballast tank in boats and ships real navigation process, determine the maximum pressure that hull bottom drainage plug is subject to, be used as the testing pressure of the close property detection of drainage plug with the numerical value of this pressure;
Second step, choose test method, selected to let out the detection method of filling in close property be aeration test outside cabin, and outside this cabin, aeration test needs to select special detection device to carry out in hull outside;
3rd step, making special tooling, the test method that the testing pressure determined according to the first step and second step are determined, the special detection device of design drainage plug tightness test, described special detection device includes cylindrical shell and base plate, described base plate is arranged at the bottom of cylindrical shell, be provided with slotted-plate and O-ring seal at the upper end open place of cylindrical shell, the sidewall of described cylindrical shell is provided with draft tube interface and rain glass interface, the sidewall of cylindrical shell is also provided with the handle for carrying;
4th step, test prepare, and withstand on Bottom Plate, make hull bottom drainage plug cover in the O-ring seal of special detection device with jacking apparatus by special detection device;
5th step, process of the test, pressurized air is filled with toward the inside of cylindrical shell by the draft tube interface of special detection device, and read the pressure value in cylindrical shell by the rain glass be connected on described rain glass interface, inflation is stopped when the pressure in cylindrical shell reaches testing pressure, the side spraying liquid soap of hull interior is positioned at drainage plug, observe and whether turn over bubble phenomenon: if having, then illustrate that drainage plug leaks; If nothing, then No leakage is described, completes the testing of the close property of hull bottom drainage plug.
In the present invention for detecting in the first step of the method for the close property of hull bottom drainage plug, analyze the relation that in boats and ships real navigation process, ballast tank loads between the height of ballast water and designed draft and have three kinds of typical case: the first situation is pressure suffered by ballast tank full load hull bottom drainage plug, under this state, drainage plug is subject to the pressure of the downward inside ballast water in direction and the pressure of direction extraneous water upwards, if ballast tank Ml water level height is apart from hull baseline H rice, the height of water level of extraneous water is apart from hull baseline h rice, according to pressure formula P=ρ gh, then downward pressure size is 0.01H MPa, pressure size is upwards 0.01h MPa, the difference of both pressure is final pressure size (0.01H-0.01h) MPa of hull bottom drainage plug, direction is downward, pressure suffered by hull bottom drainage plug when the second situation is ballast tank zero load, under this state, hull bottom drainage plug is only subject to the pressure of direction outside water upwards, if the height of water level of extraneous water is that then now the pressure of drainage plug is 0.01h MPa, and direction upwards apart from hull baseline h rice, the third situation be ballast tank water level identical with extraneous water level time hull bottom drainage plug pressure, now drainage plug is subject to two contrary pressure of equal and opposite in direction, direction, and after cancelling out each other, suffered pressure is zero.
In the present invention for detecting in the second step of the method for the close property of hull bottom drainage plug, outside cabin, the requirement of aeration test to special detection device is: have enough intensity to meet the requirement of testing pressure; Can fit tightly with bottom plate and not weld together with bottom plate; The air intake opening that can possess injecting compressed air and the air intake opening be connected with tensimeter.
In the present invention for detecting in the 3rd step of the method for the close property of hull bottom drainage plug, cylindrical shell in described special detection device is circular, described base plate is fixed with at the bottom welding of circular cylinder body, the upper end open of circular cylinder body is welded with the slotted-plate of annular, described O-ring seal is embedded in the ring groove of slotted-plate, and the upper limb of O-ring seal is given prominence to, described handle is provided with two, and two handles are fixed on the both sides of circular cylinder body respectively symmetrically.
In the present invention for detecting in the 4th step of the method for the close property of hull bottom drainage plug, needing to place a jacking apparatus below the hull bottom drainage plug detected, by handle, special detection device is transported on jacking apparatus, makes the base plate of special detection device be placed on the jacking head of jacking apparatus; Hoist jacking apparatus until the O-ring seal of special detection device closely adheres on Bottom Plate, now needs the drainage plug detected to be housed in O-ring seal.
Based on technique scheme, the method detecting the close property of hull bottom drainage plug in shipbuilding of the present invention compared with prior art, has following technological merit:
1. the testing pressure detecting the close property of hull bottom drainage plug in detection method of the present invention is the maximum pressure be subject in simulation ship's navigation process, at utmost have detected the close implementations of hull bottom drainage plug truly, reliably, and then make testing result more true and reliable.
2. detection method of the present invention dock even platform phase carry out drainage plug tightness test in advance, evade in follow-up trial voyage or flight process and may occur to leak and the secondary of generation lies up, thus save the construction time, payment can not be affected because of the leakage problem of drainage plug.
3. due to without the need to carrying out ballast tank strength test in the dock stage, reducing the integrity demands in cabin, evading the outer panel structure distortion that in dock, strength test causes simultaneously.
4. O-ring seal and the Bottom Plate at the special detection device top in detection method have fitted tightly testing, without the need to being welded on outer panel structure, avoiding paint to destroy, reducing construction cost.
Accompanying drawing explanation
Fig. 1 is pressure analysis figure suffered by ballast tank full load hull bottom drainage plug in ship's navigation process.
Fig. 2 is the enlarged diagram of hull bottom drainage plug position A in Fig. 1.
Fig. 3 is pressure analysis figure suffered by hull bottom drainage plug when ballast tank is unloaded in ship's navigation process.
Fig. 4 is the enlarged diagram of hull bottom drainage plug position B in Fig. 3.
Fig. 5 is pressure analysis figure suffered by hull bottom drainage plug when ballast tank water level is identical with extraneous water level in ship's navigation process.
Fig. 6 is the enlarged diagram of hull bottom drainage plug position C in Fig. 5.
Fig. 7 is the front view of the special detection device detecting the close property of hull bottom drainage plug in a kind of shipbuilding of the present invention.
Fig. 8 is the perspective view of the special detection device detecting the close property of hull bottom drainage plug in a kind of shipbuilding of the present invention.
Fig. 9 is the testing process of the method detecting the close property of hull bottom drainage plug in a kind of shipbuilding of the present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the method detecting the close property of hull bottom drainage plug in a kind of shipbuilding of the present invention done and further elaborate, but can not limit the scope of the invention with this.
The present invention is for detecting the method for the close property of hull bottom drainage plug in a kind of shipbuilding, and the method adopts new thinking and the close property of operating process to hull bottom drainage plug to detect, and plays Detection results safely and efficiently, and does not simple to operately damage hull.
We first get three kinds of ballast tank of ship and load the typicalness of ballast water to analyze the pressure suffered by hull bottom drainage plug, and pressure maximum under getting these three kinds of states is as testing pressure.
Fig. 1 is that in ship's navigation process, pressure analysis figure, Fig. 2 suffered by ballast tank full load hull bottom drainage plug are the enlarged diagrams of hull bottom drainage plug position A in Fig. 1.Drainage plug is subject to the pressure of the downward inside ballast water in direction and the pressure of direction extraneous water upwards in this state, if ballast tank Ml water level height is apart from hull baseline H rice, the height of water level of extraneous water is apart from hull baseline h rice, according to pressure formula P=ρ gh, then downward pressure size is 0.01H MPa, pressure size is upwards 0.01h MPa, and the difference of both pressure is final pressure size (0.01H-0.01h) MPa of hull bottom drainage plug, and direction is downward.
Fig. 3 is that when in ship's navigation process, ballast tank is unloaded, pressure analysis figure, Fig. 4 suffered by hull bottom drainage plug are the enlarged diagrams of hull bottom drainage plug position B in Fig. 3.Under this state, hull bottom drainage plug is only subject to the pressure of direction outside water upwards, if the height of water level of extraneous water is that then now the pressure of drainage plug is 0.01h MPa, and direction upwards apart from hull baseline h rice.
Fig. 5 is that when in ship's navigation process, ballast tank water level is identical with extraneous water level, pressure analysis figure, Fig. 6 suffered by hull bottom drainage plug are the enlarged diagrams of hull bottom drainage plug position C in Fig. 5.Now drainage plug is subject to two contrary pressure of equal and opposite in direction, direction, is zero after cancelling out each other.Therefore the testing pressure of hull bottom drainage plug only need choose the greater under this two states of Fig. 1 and Fig. 3, designs special frock as special detection device according to testing requirements simultaneously.
The requirement of the outdoor aeration test of middle deck of the present invention to special detection device is: have enough intensity to meet the requirement of testing pressure; Can fit tightly with bottom plate and not weld together with bottom plate; The air intake opening that can possess injecting compressed air and the air intake opening be connected with tensimeter.Based on this special tooling designed as shown in Figure 7 and Figure 8.Described special detection device includes cylindrical shell 1 and base plate 2, described base plate 2 is arranged at the bottom of cylindrical shell 1, slotted-plate 3 and O-ring seal 4 is provided with at the upper end open place of cylindrical shell 1, the sidewall of described cylindrical shell 1 is provided with draft tube interface and rain glass interface, draft tube interface connects draft tube 7, rain glass interface connects rain glass 6, and the sidewall of cylindrical shell 1 is also provided with the handle 5 for carrying.In further specific design, cylindrical shell 1 in described special detection device is circular, described base plate 2 is fixed with at the bottom welding of circular cylinder body, the upper end open of circular cylinder body is welded with the slotted-plate 3 of annular, described O-ring seal 4 is embedded in the ring groove of slotted-plate 3, and the upper limb of O-ring seal 4 is given prominence to, described handle 5 is provided with two, and two handles 5 are fixed on the both sides of circular cylinder body respectively symmetrically.
As shown in Figure 9, the present invention is as follows for the detailed step of the method detecting the close property of hull bottom drainage plug:
The first step, determine testing pressure, the relation between the height of ballast water and designed draft is loaded by analyzing ballast tank in boats and ships real navigation process, determine the maximum pressure that hull bottom drainage plug is subject to, the testing pressure of the close property detection of drainage plug is used as with the numerical value of this pressure, namely using the determined pressure maximal value of above-mentioned Fig. 1 and Fig. 3 as testing pressure, or the testing pressure of the close property detection of drainage plug is used as with other numerical value being not less than this pressure.
Second step, choose test method, selected to let out the detection method of filling in close property be aeration test outside cabin, and outside this cabin, aeration test needs to select special detection device to carry out in hull outside; By analyzing two kinds of conventional tightness test methods that applicable drainage plug detects: vacuumize test and cabin aeration test, in conjunction with the drainage plug determined in the testing pressure in classification society rule and the first step close property detection experiment pressure, the detection method finally determining the close property of drainage plug is cabin aeration test, consider security, test needs to carry out in hull outside by special detection frock.
3rd step, making special tooling, the test method that the testing pressure determined according to the first step and second step are determined, the special detection device of design drainage plug tightness test, the i.e. frock of structure shown in Fig. 7 and Fig. 8.
4th step, test prepare, and withstand on Bottom Plate, hull bottom drainage plug is covered in the O-ring seal of special detection device with jacking apparatus by special detection device.Specifically, needing to place a jacking apparatus below the hull bottom drainage plug detected, by handle, special detection device being transported on jacking apparatus, making the base plate of special detection device be placed on the jacking head of jacking apparatus; Hoist jacking apparatus until the O-ring seal of special detection device closely adheres on Bottom Plate, now needs the drainage plug detected to be housed in O-ring seal.
5th step, process of the test, pressurized air is filled with toward the inside of cylindrical shell by the draft tube interface of special detection device, and read the pressure value in cylindrical shell by the rain glass be connected on described rain glass interface, inflation is stopped when the pressure in cylindrical shell reaches testing pressure, the side spraying liquid soap of hull interior is positioned at drainage plug, observe and whether turn over bubble phenomenon: if having, then illustrate that drainage plug leaks; If nothing, then No leakage is described, completes the testing of the close property of hull bottom drainage plug.
The method of the close property of hull bottom drainage plug is provided in the shipbuilding provided of the present invention, can be quick, convenient and effectively detect the leakage scenarios of hull bottom drainage plug, neither destroy Bottom Plate paint, Ship Structure can be made again unaffected, reach the object shortening shipbuilding period.
Claims (6)
1. in a shipbuilding for detecting the method for the close property of hull bottom drainage plug, it is characterized in that, the method first determines the testing pressure that the close property of drainage plug detects, with jacking apparatus, special detection device is covered on the outside of hull bottom drainage plug again, in special detection device, inject the pressurized air reaching above-mentioned testing pressure, detect at drainage plug hull interior side spraying liquid soap and whether leak gas.
2. in a kind of shipbuilding according to claim 1 for detecting the method for the close property of hull bottom drainage plug, it is characterized in that, its detailed step is as follows:
The first step, determine testing pressure, the relation between the height of ballast water and designed draft is loaded by analyzing ballast tank in boats and ships real navigation process, determine the maximum pressure that hull bottom drainage plug is subject to, be used as the testing pressure of the close property detection of drainage plug with the numerical value of this pressure;
Second step, choose test method, selected to let out the detection method of filling in close property be aeration test outside cabin, and outside this cabin, aeration test needs to select special detection device to carry out in hull outside;
3rd step, making special tooling, the test method that the testing pressure determined according to the first step and second step are determined, the special detection device of design drainage plug tightness test, described special detection device includes cylindrical shell and base plate, described base plate is arranged at the bottom of cylindrical shell, be provided with slotted-plate and O-ring seal at the upper end open place of cylindrical shell, the sidewall of described cylindrical shell is provided with draft tube interface and rain glass interface, the sidewall of cylindrical shell is also provided with the handle for carrying;
4th step, test prepare, and withstand on Bottom Plate, make hull bottom drainage plug cover in the O-ring seal of special detection device with jacking apparatus by special detection device;
5th step, process of the test, pressurized air is filled with toward the inside of cylindrical shell by the draft tube interface of special detection device, and read the pressure value in cylindrical shell by the rain glass be connected on described rain glass interface, inflation is stopped when the pressure in cylindrical shell reaches testing pressure, the side spraying liquid soap of hull interior is positioned at drainage plug, observe and whether turn over bubble phenomenon: if having, then illustrate that drainage plug leaks; If nothing, then No leakage is described, completes the testing of the close property of hull bottom drainage plug.
3. in a kind of shipbuilding according to claim 2 for detecting the method for the close property of hull bottom drainage plug, it is characterized in that, in the described first step, analyze the relation that in boats and ships real navigation process, ballast tank loads between the height of ballast water and designed draft and have three kinds of typical case: the first situation is pressure suffered by ballast tank full load hull bottom drainage plug, under this state, drainage plug is subject to the pressure of the downward inside ballast water in direction and the pressure of direction extraneous water upwards, if ballast tank Ml water level height is apart from hull baseline H rice, the height of water level of extraneous water is apart from hull baseline h rice, according to pressure formula P=ρ gh, then downward pressure size is 0.01H MPa, pressure size is upwards 0.01h MPa, the difference of both pressure is final pressure size (0.01H-0.01h) MPa of hull bottom drainage plug, direction is downward, pressure suffered by hull bottom drainage plug when the second situation is ballast tank zero load, under this state, hull bottom drainage plug is only subject to the pressure of direction outside water upwards, if the height of water level of extraneous water is that then now the pressure of drainage plug is 0.01h MPa, and direction upwards apart from hull baseline h rice, the third situation be ballast tank water level identical with extraneous water level time hull bottom drainage plug pressure, now drainage plug is subject to two contrary pressure of equal and opposite in direction, direction, and after cancelling out each other, suffered pressure is zero.
4. in a kind of shipbuilding according to claim 2 for detecting the method for the close property of hull bottom drainage plug, it is characterized in that, in the requirement of the outdoor aeration test of described second step middle deck to special detection device be: have enough intensity to meet the requirement of testing pressure; Can fit tightly with bottom plate and not weld together with bottom plate; The air intake opening that can possess injecting compressed air and the air intake opening be connected with tensimeter.
5. in a kind of shipbuilding according to claim 2 for detecting the method for the close property of hull bottom drainage plug, it is characterized in that, in the 3rd described step, cylindrical shell in described special detection device is circular, described base plate is fixed with at the bottom welding of circular cylinder body, the upper end open of circular cylinder body is welded with the slotted-plate of annular, described O-ring seal is embedded in the ring groove of slotted-plate, and the upper limb of O-ring seal is given prominence to, described handle is provided with two, and two handles are fixed on the both sides of circular cylinder body respectively symmetrically.
6. in a kind of shipbuilding according to claim 2 for detecting the method for the close property of hull bottom drainage plug, it is characterized in that, in the 4th described step, needing to place a jacking apparatus below the hull bottom drainage plug detected, by handle, special detection device is transported on jacking apparatus, makes the base plate of special detection device be placed on the jacking head of jacking apparatus; Hoist jacking apparatus until the O-ring seal of special detection device closely adheres on Bottom Plate, now needs the drainage plug detected to be housed in O-ring seal.
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| CN201510374825.4A CN104990674A (en) | 2015-06-30 | 2015-06-30 | Leakproofness detection method for drain plug of ship bottom in ship construction |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720066A (en) * | 2022-03-22 | 2022-07-08 | 安徽省宁国加贝利橡塑制品有限公司 | Oil plug sealing performance detection device for automobile |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03211435A (en) * | 1990-01-16 | 1991-09-17 | Kurimoto Ltd | Device and method for testing airtightness of screw hole of semicylinder body |
| CN2884173Y (en) * | 2006-02-14 | 2007-03-28 | 沪东中华造船(集团)有限公司 | Vacuum sealing means |
| CN201425537Y (en) * | 2009-05-31 | 2010-03-17 | 天津豪钢机械工程有限公司 | Leak tightness test device for hatch covers |
| CN102519680A (en) * | 2012-01-06 | 2012-06-27 | 重庆生竹科技发展有限公司 | Quality detection method of butt joint weld on ship steel plate |
| CN103542991A (en) * | 2013-10-24 | 2014-01-29 | 广东江龙船舶制造有限公司 | Tightness test cover |
-
2015
- 2015-06-30 CN CN201510374825.4A patent/CN104990674A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03211435A (en) * | 1990-01-16 | 1991-09-17 | Kurimoto Ltd | Device and method for testing airtightness of screw hole of semicylinder body |
| CN2884173Y (en) * | 2006-02-14 | 2007-03-28 | 沪东中华造船(集团)有限公司 | Vacuum sealing means |
| CN201425537Y (en) * | 2009-05-31 | 2010-03-17 | 天津豪钢机械工程有限公司 | Leak tightness test device for hatch covers |
| CN102519680A (en) * | 2012-01-06 | 2012-06-27 | 重庆生竹科技发展有限公司 | Quality detection method of butt joint weld on ship steel plate |
| CN103542991A (en) * | 2013-10-24 | 2014-01-29 | 广东江龙船舶制造有限公司 | Tightness test cover |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720066A (en) * | 2022-03-22 | 2022-07-08 | 安徽省宁国加贝利橡塑制品有限公司 | Oil plug sealing performance detection device for automobile |
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Application publication date: 20151021 |