Pressure stabilizing cavity unit mounting tool

Abstract

A pressure stabilizing cavity unit installation tool is provided with a vertically-arranged jig frame plate and a clamp, a long-strip-shaped hole is formed in the top of the jig frame plate and is vertically arranged, a first opening is formed in one side of the long-strip-shaped hole, a second opening is formed in the other side of the long-strip-shaped hole, the top of the long-strip-shaped hole is communicated with the first opening and the second opening, and the depth of the second opening is larger than that of the first opening. An iron wedge is placed in the second opening, the shape of the bottom of the iron wedge is matched with that of the bottom of the second opening, the two pressure stabilizing cavity units are inserted into the long-strip-shaped hole in a back-to-back butt joint mode, and pressure stabilizing cavities of the pressure stabilizing cavity units are arranged in the first opening and the second opening in a sitting mode; the jig frame plates and the clamps are used in cooperation, the clamps are fixed to the tops of the pressure stabilizing cavity units, the clamps are in a concave shape, and the concave clamps are clamped on ship outer plates arranged on the pressure stabilizing cavity units. The outer plate can be prevented from generating large deformation in the welding process, the welding quality of argon arc welding is guaranteed, the welding efficiency is improved, the overall construction period is shortened to the maximum extent, and the construction quality is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas drag reduction, and particularly relates to a pressure stabilizing cavity unit installation tool. BACKGROUND

[0002] The ship gas drag reduction technology is a technology of reducing the frictional resistance of the ship surface by introducing air to the bottom of the ship during the ship sailing to form a stable gas lubricating layer. The ship gas layer drag reduction system comprises a gas supply system, a gas cavity and a gas jet hole. The gas jet hole is arranged on the ship bottom plate and communicates with the gas cavity. When the ship sails, the gas supply system supplies gas to the gas cavity, and the gas in the gas cavity is jetted out to the outside of the ship body through the gas jet hole to form a gas lubricating layer capable of reducing the resistance at the bottom of the ship body.

[0003] The bottom of the ship body is arranged with structures such as a pressure stabilizing cavity, a backing plate, a baffle, a gas cavity coaming and bow and stern flow guide plates. The pressure stabilizing cavity is installed on the upper surface of the outer bottom plate, and stabilizes the air pressure during sailing and jets air to seawater to form a gas layer. The backing plate, the baffle, the gas cavity coaming and the bow and stern flow guide plates are installed on the lower surface of the outer bottom plate to prevent the gas from dissipating too quickly and maintain the flat bottom area of the ship and the stability of the gas layer.

[0004] The pressure stabilizing cavity is welded on the outer bottom plate of the ship body and is a semicircular pipe. The fillet weld between the pressure stabilizing cavity and the outer plate is in a full penetration joint form and needs to be welded by argon arc welding, which has a large amount of welding work and a long time. If the pressure stabilizing cavity is installed after the section forming, the section construction period will be affected, and the welding quality between the pressure stabilizing cavity and the outer plate cannot be guaranteed. Therefore, the pressure stabilizing cavity and the outer bottom plate must be welded in advance to form a complete pressure stabilizing cavity unit, which is installed in the section assembly stage to shorten the overall construction period to the greatest extent and improve the construction quality.

[0005] Since the backing plate, the baffle, the gas cavity coaming and the bow and stern flow guide plates are arranged outside the ship bottom, these structures do not exist on other ships, and there is no installation method to be referred to. Therefore, the installation sequence of the backing plate, the baffle, the gas cavity coaming and the bow and stern flow guide plates is very critical. The small unitized pressure stabilizing cavity structure used in the patent is used to replace the installation on the large section, which is a key technology for the gas layer drag reduction ship to be built and applied. In order to manufacture the unitized pressure stabilizing cavity structure faster and better, a pressure stabilizing cavity unit installation tool is invented. SUMMARY

[0006] A kind of stable pressure chamber unit installation tool, there is vertical placement jig board and fixture, jig board top is provided with long strip hole, long strip hole is vertically arranged, one side of long strip hole is equipped with first opening, the other side is equipped with second opening, the top of long strip hole is communicated with first opening and second opening, the depth of second opening is greater than the depth of first opening, iron wedge is placed in second opening, the shape of the bottom of iron wedge is consistent with the shape of the bottom of second opening, two stable pressure chamber units are inserted into long strip hole in back-to-back docking, the stable pressure chamber of stable pressure chamber unit is seated in first opening and second opening.

[0007] Multiple jig boards and multiple fixtures are used in cooperation, multiple fixtures are fixed on the top of stable pressure chamber unit, fixture is concave, concave fixture is clamped on the outboard of stable pressure chamber unit.

[0008] The above-mentioned stable pressure chamber unit installation tool, further, first opening is quarter circle, and the radius thereof is adapted to the radius of stable pressure chamber.

[0009] The above-mentioned stable pressure chamber unit installation tool, further, the outboard of stable pressure chamber unit is inserted into long strip hole.

[0010] The above-mentioned stable pressure chamber unit installation tool, further, multiple jig boards and multiple fixtures are arranged at equal intervals.

[0011] The above-mentioned stable pressure chamber unit installation tool, further, one jig board is matched with one fixture.

[0012] The present application provides a kind of stable pressure chamber unit installation tool, adopts formwork plate to carry out formal welding, two stable pressure chamber units are placed in " back-to-back " in jig board, two stable pressure chamber units are fixed by fixture and iron wedge, prevent that larger deformation is generated in welding process, guarantee the welding quality of argon arc welding, improve welding efficiency, to greatest extent shorten overall construction period, improve construction quality. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the working schematic diagram of the present application;

[0014] Figure 2 It is the side view structural schematic diagram of the present application;

[0015] Among them, 1-stable pressure chamber, 2-outboard, 3-gripper, 4-jig board, 5-iron wedge. DETAILED DESCRIPTION

[0016] The present application is further described in conjunction with the drawings.

[0017] The pressure stabilization cavity unit is mainly composed of a pressure stabilization cavity half-round pipe and an outer bottom plate. The greatest workload in manufacturing the pressure stabilization cavity unit is the welding of the pressure stabilization cavity and the outer plate. Therefore, a good tool can shorten the overall construction period and improve the construction quality.

[0018] As shown in Figure 1 , the pressure stabilization cavity unit mounting tool is composed of a jig and a jig. The jig 3 is a concave shape with a reverse buckle. The height and width of the jig are A, 200<A<250mm. The height of the jig opening is 0.5A, and the width of the jig opening is B=60mm+a. The tolerance a is usually 2-3mm. This tolerance mainly ensures that the two pressure stabilization cavity units are clamped by the jig to ensure the close connection of the pressure stabilization cavity units.

[0019] As shown in Figure 2 , the height and width of the jig are B, 0<B<1000mm. The top of the jig is provided with a long strip-shaped hole. One side of the long strip-shaped hole is provided with a first opening, and the other side is provided with a second opening. The radius R of the first opening is consistent with the radius of the pressure stabilization cavity. The second opening is sunken to form a vacancy. An iron wedge is placed in the vacancy. The shape of the iron wedge is roughly the same as the shape of the vacancy (shaded in the figure). The top of the long strip-shaped hole is in communication with the first opening and the second opening.

[0020] Use process:

[0021] Draw the outer plate upper and lower surface structure installation line, jet hole center line, and reference network line on the upper and lower surfaces of the outer plate. After the drawing is completed, open the jet hole on the outer plate.

[0022] When positioning the half-round pipe, place the thickened outer plate on the horizontal ground. Position the half-round pipe according to the 100mm check line of the plate. Use a cushion to raise the half-round pipe by 4-5mm. Use CO2 welding to perform positioning welding. During the positioning welding process, gradually remove the cushion under the half-round pipe.

[0023] In order to ensure the welding quality of argon arc welding and improve the welding efficiency, place the template jig on the ground, and place the two pressure stabilization cavity units "back to back" in the jig plate. Prevent the outer plate from deforming greatly during welding. The jig fixes the two pressure stabilization cavity units. First, place the left pressure stabilization cavity unit, and then place the right pressure stabilization cavity unit. The reason for the large hole on the right side of the template jig is to facilitate the alignment and up-down movement of the two pressure stabilization cavity units. After positioning, insert an iron wedge into the gap. After welding the upper weld, remove the pressure stabilization cavity unit, turn it over, fix it again using the jig and template jig, and weld the other side.

Claims

1. A regulator chamber unit mounting tool characterized by comprising: The present application discloses a tire frame plate and a clamp, the top of the tire frame plate is provided with a long strip-shaped hole, the long strip-shaped hole is vertically arranged, one side of the long strip-shaped hole is provided with a first opening, the other side is provided with a second opening, the top of the long strip-shaped hole is communicated with the first opening and the second opening, the depth of the second opening is greater than that of the first opening, an iron wedge is placed in the second opening, the bottom shape of the iron wedge is matched with the bottom shape of the second opening, two back-to-back stable pressure cavity units are inserted into the long strip-shaped hole, the stable pressure cavity units are placed in the first opening and the second opening. Multiple tire frame plates and multiple clamps are used in cooperation, the multiple clamps are fixed on the top of the stable pressure cavity unit, the clamp is concave, and the concave clamp is clamped on the hull plate of the stable pressure cavity unit.

2. The mounting tool for a pressure chamber unit according to claim 1, wherein The first opening is a quarter circle, and the radius thereof is matched with the radius of the stable pressure cavity.

3. The mounting tool for a pressure chamber unit according to claim 1, wherein The hull plate of the stable pressure cavity unit is inserted into the long strip-shaped hole.

4. The mounting tool for a pressure chamber unit according to claim 1, wherein The multiple tire frame plates and the multiple clamps are arranged at equal intervals.

5. The mounting tool for a pressure chamber unit according to claim 1 or 4, wherein One tire frame plate is matched with one clamp.

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