WO2019015211A1

WO2019015211A1 - Device for testing tightness and strength of airtight cabin

Info

Publication number: WO2019015211A1
Application number: PCT/CN2017/114088
Authority: WO
Inventors: 黄志煊; 麦国雄; 何琼东; 黄志驱; 谭松龄; 黄光操; 欧全文; 王建设; 曾荣胜; 耿通辉; 杜金
Original assignee: 广船国际有限公司
Priority date: 2017-07-20
Filing date: 2017-11-30
Publication date: 2019-01-24
Also published as: CN206960076U

Abstract

A device for testing the tightness and strength of an airtight cabin (10), comprising: a tooling plate (1), which may enter the inner side of an airtight cabin (10) by means of an opening of the airtight cabin (10) and which is attached to the inner side surface of the airtight cabin (10) at a position corresponding to the opening, the middle part of the tooling plate (1) being provided with a test hole (11), and one side of the tooling plate (1) being connected to connecting rods (5) which may pass through the opening; a sealing gasket (2), sleeved on the connecting rods (5) and positioned between the tooling plate (1) and the inner side surface of the airtight cabin (10); and a fixed edge plate (3), sleeved on the connecting rods (5) and positioned outside of the airtight cabin (10). The outer dimensions of the tooling plate (1), the gasket (2) and the fixed edge plate (3) are all greater than the dimensions of the opening of the airtight cabin (10) so as to block the opening; the end of the connecting rods (5) has a fastener connected thereto which may press and connect the tooling plate (1), the sealing gasket (2) and the fixing edge plate (3) to the inner and outer sides of the airtight cabin (10). The test device has a simple structure, may facilitate test operations, and is capable of saving a large amount of costs and effectively shortening the construction period for a watercraft.

Description

Test device for tightness and strength of closed cabin

Technical field

The utility model relates to the technical field of ship construction, in particular to a test device for the tightness and strength of a closed cabin.

Background technique

In the construction process of the ship, in order to ensure the airtightness and structural strength of the perimeter welds to meet the specification requirements, the cabin water filling test shall be used to test the airtightness of the perimeter weld and the structural strength of the cabin. . The existing tightness test generally directly welds a single piece of sealing plate 1' to the outside of the opening of the closed compartment 10' to achieve a sealing effect, thereby performing the test, as shown in Fig. 1 and Fig. 2, the sealing plate 1' and The joint of the closed compartment 10' has a welded weld bead 12', and the sealing plate 1' is provided with a test hole 11' for connecting a water filling pipe and a pressure gauge, filling the sealed compartment with water, and observing the water in the closed compartment Pressure changes.

With the above method, it is first necessary to weld the sealing plate 1' so that the weld 12' reaches the close test requirement, in order to carry out the water filling test, which has the following defects:

1) The test conditions for water filling are simple, and the installation tooling needs the cooperation of assembly and welding work;

2) The sealing plate is directly welded to the outside of the cabin. If the quality of the sealing seam is unqualified, the resulting pores need to be repaired again, which will affect the progress of the cabin tightness test and increase the working time;

3) After the test is completed, the sealing plate needs to be removed, and the gouging, grinding and electric welding work are required to match the code feet;

4) After polishing, it is necessary to perform secondary grinding on the cavity repair welding;

5) After the grinding operation, the paint on the outdoor side of the cabin needs to be recoated, and the removed sealing plate cannot be reused.

In short, from the five aspects of human, machine, material, law, and ring analysis, this method is used for cabin tightness and The strength test requires multiple types of work and multiple equipments, and at the same time, some materials are scrapped at one time, which is time-consuming, laborious, and inefficient.

Utility model content

The purpose of the utility model is to provide a test device which is simple in structure and convenient for the operation and tightness and strength of the closed compartment, which can save a lot of cost and effectively shorten the ship construction period.

To this end, the utility model adopts the following technical solutions:

Test equipment for tightness and strength of closed compartments, including:

a tooling plate, the tooling plate can enter the inner side of the sealed compartment through the opening of the closed compartment and is attached to the inner side of the closed compartment corresponding to the opening; the test hole is opened in the middle of the tooling plate; One side of the tooling plate is connected with a connecting rod capable of passing through the opening;

a gasket, the gasket is sleeved on the connecting rod and located between the tooling board and an inner side of the closed compartment;

Fixing along the plate, the fixing sleeve is sleeved on the connecting rod and located outside the sealed compartment;

Wherein, the outer dimension of the tooling plate, the outer dimension of the sealing pad, and the outer dimension of the fixing plate are larger than the opening size of the closed compartment to block the opening;

A fastener is attached to an end of the connecting rod, and the fastener is capable of pressing and connecting the tooling plate, the sealing pad and the fixing plate along the inner and outer sides of the sealed compartment.

Wherein, the sealing pad and the fixing plate are both annular structures, and the sealing pad and the fixing plate are respectively provided with a plurality of sealing gasket through holes and fixed along the plate through holes in the circumferential direction, the tooling The plate is connected with a plurality of the connecting rods arranged in a ring direction, and the connecting rods are respectively disposed in one-to-one correspondence with the sealing plate through holes and the fixing along the plate through holes.

Wherein the sealing pad and the fixing are uniform in size along the inner ring of the plate.

Wherein, the outer circumference of the connecting rod is provided with an external thread, and the fastener is a nut.

Wherein, the connecting rod is fixedly disposed on the tooling plate by welding.

Wherein, the other side of the tooling board is connected with a handle.

Wherein, the number of the handles is two, and is spaced apart in the horizontal direction.

Wherein, the handle is a concave structure.

Wherein, the inner side of the test hole is provided with an internal thread, and the test hole is connected with a water filling pipe and a pressure gauge through an internal thread.

Wherein, the end of the water filling pipe for connecting with the test hole is wound with a sealing tape.

The beneficial effects of the utility model are:

The test device for the tightness and strength of the closed compartment of the utility model is placed on the outer side of the closed compartment by passing the tooling plate and the sealing gasket through the opening of the closed compartment, and the fixing plate is placed on the outer side of the closed compartment through the fastener Cooperating with the connecting rod, the tooling plate, the sealing pad and the fixing plate are pressed and connected along the inner and outer sides of the closed compartment, so that the sealing treatment of the opening of the closed compartment can be realized, which is not only simple in structure but also convenient for filling water. And pressure testing, and after removing the fasteners and fixing the board after the test, the tooling board and the gasket can be taken out together from the opening of the closed compartment. Since there is no welding, there is no need to add extra to the side wall of the closed compartment. The treatment can save a lot of cost and effectively shorten the ship construction period.

DRAWINGS

Figure 1 is a front view showing the structure of a sealing plate of a conventional tightness test;

Figure 2 is a schematic cross-sectional structural view of the sealing plate of Figure 1 after being installed in a closed compartment;

3 is a front structural view of a testing device provided by a specific embodiment of the present invention;

Figure 4 is a schematic cross-sectional view of the test apparatus of Figure 3 at A-A;

Figure 5 is a schematic cross-sectional view of the test apparatus of Figure 3 at B-B;

Figure 6 is a cross-sectional structural view of the test apparatus of Figure 3 at C-C;

Figure 7 is a schematic cross-sectional view of the test apparatus of Figure 3 at D-D;

Figure 8 is a cross-sectional structural view of the test apparatus of Figure 3 at E-E;

Figure 9 is a top plan view showing the test apparatus of Figure 3 mounted in a closed compartment.

In the figure: 10'-closed compartment; 1'-sealing plate; 11'-test hole; 12'-weld seam;

10-closed compartment; 1-work board; 11-test hole; 2-sealing pad; 3-fixed along the board; 4-handle; 5-connecting rod.

Detailed ways

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in FIG. 3 to FIG. 9 , an example of the present invention provides a test device for the tightness and strength of the sealed compartment 10 , which comprises a tooling plate 1 , a gasket 2 and a fixed edge plate 3 .

The tooling plate 1 can enter the inside of the sealed compartment 10 through the opening of the closed compartment 10 and is attached to the inner side of the closed compartment 10 corresponding to the opening, and a connecting rod 5 capable of passing through the opening is connected to one side of the tooling plate 1. In the present embodiment, the connecting rod 5 is fixedly disposed on the tooling plate 1 by welding, thereby reinforcing the connection strength and ensuring the connection reliability at the time of sealing.

The gasket 2 is sleeved on the connecting rod 5 and located between the tooling plate 1 and the inner side of the closed compartment 10.

The fixed plate 3 is sleeved on the connecting rod 5 and located outside the closed chamber 10.

The outer dimensions of the tooling plate 1, the outer dimensions of the gasket 2, and the outer dimensions of the fixed plate 3 are larger than the opening size of the closed compartment 10 to achieve complete sealing of the opening. A fastener is attached to the end of the connecting rod 5, and the fastener can press and attach the tooling plate 1, the gasket 2 and the fixing plate 3 to the plate 3 The inside and outside of the closed compartment 10 are both sides. Wherein, the outer circumference of the connecting rod 5 is provided with an external thread, and the fastener is a nut.

Through the above structure, the sealing process of the opening of the closed compartment 10 can be realized, which is not only simple in structure, but also convenient for water filling and pressure testing, and after the test, the fastener is removed and the fixing plate is fixed, and the tooling plate can be The gaskets are taken together from the opening of the closed compartment. Since there is no welding, no additional treatment of the side walls of the closed compartment is required, thereby saving a lot of cost and effectively shortening the ship construction period.

The test hole 11 is opened in the middle of the tooling plate 1; wherein the inner side of the test hole 11 is provided with an internal thread, and the test hole 11 is connected with a water filling pipe and a pressure gauge through internal threads. In the present embodiment, the end portion of the water filling pipe for connection with the test hole 11 is wound with a sealing tape to achieve sealing and avoid air leakage. At the time of the test, water was filled into the sealed compartment 10, and the change in the water pressure in the closed compartment was observed.

On the basis of the above structure, in order to reduce weight and save cost, the gasket 2 and the fixing plate 3 are both annular structures, wherein the gasket 2 and the inner ring fixed along the plate 3 are uniform in size.

The gasket 2 and the fixing plate 3 are respectively provided with a plurality of gasket through holes and fixed along the plate through holes in the circumferential direction, and the tooling plate 1 is connected with a plurality of connecting rods 5 arranged in a ring direction, and the connecting rods 5 and the sealing pads respectively The through holes are fixed in one-to-one correspondence with the plate through holes.

Further, the handle 4 is connected to the other side of the tooling plate 1. Among them, the number of the handles 4 is two, and they are spaced apart in the horizontal direction. In the present embodiment, the handle 4 has a concave structure.

The test device is mainly composed of a tooling plate, and the handle and the connecting rod are connected to the tooling plate by welding, and the fixed plate and the tooling plate are connected together by a connecting rod and can be disassembled, and the sealing pad is inserted into the connecting rod. Installed on one side of the tooling plate. In the specific operation, the operation steps are as follows:

1) Connect the handle, test hole, connecting rod and gasket to the tooling plate in advance according to the drawing;

2) Inserting the tooling plate from the opening position of the closed compartment into the inside of the closed compartment, the handle is facing the inner side of the closed compartment, so that the tooling plate corresponds to the opening of the closed compartment;

3) Insert the fixed plate along the connecting rod, insert the fasteners, and tighten the fasteners to ensure that the opening position of the closed compartment is not leaking, thereby achieving closure;

4) Filling the closed chamber with fresh water, stopping the water pressure after reaching the pressure (0.2MP) required by the test, and starting the test after four hours of static pressure;

5) Check whether there are water droplets, water droplets, water marks and other leakage on the perimeter weld of the closed compartment. If not, the weld seam is tight and the tightness meets the acceptance requirements; if the structure of the closed compartment is deformed, if no Deformation, the strength is qualified, and the acceptance requirements are met.

Compared with the prior art, the test device has the following differences, as shown in Table 1;

Table 1

In the actual production process, after the application verification on the series of ships such as Dayuan 5WT, Beihai 5.5WT and Zhonghai 11.4WT, the test device is used to complete the tightness and strength test of the closed compartment:

1. The number of personnel from the original 10 (2 assemblers, 2 welders, 1 carbon planer, 2 wearers, 1 painter, 2 secret testers) reduced to 2 2)), the staff reduction is about 80%;

2. Simplified the assembly and disassembly process of the tooling and preparation work before the test, shortening the test time, shortened from the original 4 days (1 day of assembly, 1 day of welding, 0.5 day of gouging, 1 day of grinding, 0.5 days of recoating) Up to 1 day (0.5 days of production, 0.5 days of installation), the time savings is 75%. For ships that require strict control cycles, the shortening of the previous process time is conducive to the rapid development of subsequent work, and the control of the entire docking node Very obvious effect;

3. Simplify the test process, shorten the test period, save labor resources, and reduce the equipment from the original welder, carbon planer, sander, and dense test equipment to only need to configure the test device;

4. The test device can be used for the same type of ship, and the recycling rate is high;

5. Calculated according to the construction of the ship in the Nansha plant area in 2016, the labor cost input was reduced from the original 329,625 yuan to 73,250 yuan, and the material cost investment was reduced from the original 76,122.936 yuan to 9877.923 yuan, and the cost savings was 79.51%.

From this point of view, the test device liberates part of the labor and equipment input required for the tightness and strength test of the closed compartment to a certain extent, simplifies the test operation process in the unfavorable open space, and reduces the operation time. Labor intensity, while avoiding the adverse effects of prior art methods of testing.

At the same time, it can also avoid noise pollution during the test, help protect employees' hearing, and reduce the disturbance of the people; avoid poisonous gas and dust generated by welding, painting, polishing, reduce air pollution, and help protect the atmosphere Effectively save power loss caused by equipment use, greatly improve the safety of the operation during the test, worthy of promotion of the entire industry, with greater social benefits.

The technical principles of the present invention have been described above in connection with specific embodiments. The descriptions are only intended to explain the principles of the present invention and are not to be construed as limiting the scope of the invention. Based on the explanation herein, those skilled in the art can associate other embodiments of the present invention without any inventive effort, and all of them fall within the scope of the present invention.

Claims

A test device for the tightness and strength of a closed compartment, characterized in that it comprises:

a tooling plate, the tooling plate can enter the inner side of the sealed compartment through the opening of the closed compartment and is attached to the inner side of the closed compartment corresponding to the opening; the test hole is opened in the middle of the tooling plate; One side of the tooling plate is connected with a connecting rod capable of passing through the opening;

a gasket, the gasket is sleeved on the connecting rod and located between the tooling board and an inner side of the closed compartment;

Fixing along the plate, the fixing sleeve is sleeved on the connecting rod and located outside the sealed compartment;

Wherein, the outer dimension of the tooling plate, the outer dimension of the sealing pad, and the outer dimension of the fixing plate are larger than the opening size of the closed compartment to block the opening;

A fastener is attached to an end of the connecting rod, and the fastener is capable of pressing and connecting the tooling plate, the sealing pad and the fixing plate along the inner and outer sides of the sealed compartment.
The testing device according to claim 1, wherein the sealing pad and the fixing plate are both annular structures, and the sealing pad and the fixing plate are respectively provided with a plurality of sealing pads along the ring direction. a through hole and a fixed through hole, the tooling plate is connected with a plurality of the connecting rods arranged in a ring direction, and the connecting rods respectively correspond to the sealing hole through holes and the fixing along the through holes of the plate Settings.
The testing device of claim 2 wherein said gasket and said inner ring are of uniform size along said inner ring.
The testing device according to claim 1, wherein the connecting rod is provided with an external thread on the outer circumference, and the fastener is a nut.
The testing device according to claim 1, wherein the connecting rod is fixedly disposed on the tooling plate by welding.
The testing device according to claim 1, wherein a handle is attached to the other side of the tooling plate.
The testing device according to claim 6, wherein the number of the handles is two and spaced apart in the horizontal direction.
The testing device according to claim 6, wherein the handle is a concave structure.
The testing device according to any one of claims 1 to 8, characterized in that the inner side of the test hole is provided with an internal thread, and the test hole is connected with a water filling pipe and a pressure gauge through internal threads.
The testing device according to claim 9, wherein a sealing tape is wound around an end of the water filling pipe for connection to the test hole.