CN115892392A - High-pressure-resistant spherical shell and sealing device of inflatable life raft system - Google Patents

Abstract

The present invention relates to the field of inflatable liferafts, in particular to a high-pressure-resistant spherical shell of an inflatable liferaft system and a sealing device, including the shell, during the sealing process of the high-pressure-resistant spherical shell of the above-mentioned inflatable liferaft system Among them, a sealing device is used to seal and assemble it. The sealing device includes an inner sealing strip and an outer sealing strip; the embedded assembly method adopted between the elastic sealing block and the lower spherical shell in the present invention can achieve The effect of multi-directional sealing, at the same time, under the high pressure inside the shell, the inner rubber plate is attached to the inner wall of the shell under pressure, the push rod is pushed synchronously to drive the ball to move, and the built-in plate is further downward under the action of the ball Extruding the elastic sealing block, the elastic sealing block in the original state is in close contact with the upper end of the lower spherical shell, and at this time the connection tightness between the elastic sealing block and the lower spherical shell is further enhanced.

Description

High-pressure-resistant spherical shell and sealing device of an inflatable liferaft system

technical field

The invention relates to the field of inflatable liferafts, in particular to a high-pressure-resistant spherical shell and a sealing device of an inflatable liferaft system.

Background technique

Inflatable life raft is a kind of life-saving equipment for people in distress in case of shipwreck, and it is widely used on ships and underwater vehicles. The inflatable liferaft system is the system equipment for releasing the inflatable liferaft. It is usually fixed on the underwater vehicle. The inflatable liferaft and life-saving items are placed in the pressure-bearing spherical shell, which has two upper and lower parts. formula structure.

At present, the upper and lower shells are sealed and pressurized only through the fastening belt and the four compression bolts on the bracket. The overall airtightness and reliability of the shell are not enough, and there may be hidden dangers of air leakage and water ingress; at the same time Since the two-lobed spherical shell needs to be opened smoothly under appropriate conditions, the single sealing treatment is repeatedly opened during the installation and maintenance of the shell, and the assembly is prone to overuse or deformation, which affects the sealing of the shell. If fixed connection assembly is adopted To ensure the airtightness of the housing, the situation that the housing needs to be opened cannot be dealt with.

Contents of the invention

In order to make up for the deficiencies of the prior art, the present invention provides a high-pressure-resistant spherical shell and a sealing device for an inflatable liferaft system.

The technical problems to be solved by the present invention are achieved by adopting the following technical solutions: a high-pressure-resistant spherical shell of an inflatable liferaft system, including a shell, and the shell is a spherical shell with upper and lower flaps with flanges The lower spherical shell flange has a vertical edge, the upper end of the upper spherical shell is equipped with two symmetrically distributed outer suspension rings, and the lower end of the lower spherical shell flange is provided with holes evenly distributed along its circumference, and the holes pass through the bolts. A lifting ring is connected, two symmetrically distributed pressure sensors are installed at the lower end of the lower spherical shell, outer lifting lugs are installed on the outer surface of the lower spherical shell through bolts, and an inner lifting ring is respectively arranged in the upper and lower spherical shells.

In the process of sealing the high-pressure spherical shell of the above-mentioned inflatable liferaft system, a sealing device is used to seal and assemble it. The sealing device includes an inner sealing strip and an outer sealing strip. Two sealing grooves with the same center, a convex inner sealing strip is set in the sealing groove, the convex end of the inner sealing strip is plugged with the flange end of the upper spherical shell, and an outer sealing strip is arranged between the two flanges. The outer sealing strip is composed of an L-shaped section and an inclined section installed on the vertical end of the L-shaped section. The L-shaped section wraps the flange of the lower spherical shell. The upper end of the inclined section conflicts with the outer surface of the upper spherical shell. There is a double seal between the flanges.

Preferably, the double seal includes a drive plate, the drive plate is hinged on the lower end surface of the inclined section of the outer sealing strip, the drive plate is evenly arranged along the circumference of the upper spherical shell, the drive plate is composed of two connecting plates hinged, the drive plate A ring plate is hinged at the lower end of the ring plate, and the lower end surface of the ring plate is provided with a sealing plate which is in conflict with the upper end surfaces of the two flanges.

Preferably, the inner wall of the upper spherical shell is equipped with a ring sealing plate with an inverted L-shaped vertical section, the inner wall of the lower spherical shell is equipped with a ring connecting plate corresponding to the position of the ring sealing plate, and the upper end of the ring connecting plate is provided with a ring sealing plate. The closed groove for the plug-fitting of the plates, and the vertical inner ring surface of the closed groove are all provided with a rubber seal.

Preferably, under the horizontal section of the ring sealing plate, there is an annular inner rubber plate located on the side of the ring plate away from the center of the lower spherical shell, and the inner rubber plate is facing the connection between the upper spherical shell and the lower spherical shell , the end surface of the inner rubber plate away from the ring joint plate is equipped with horizontal rods evenly arranged along the circumferential direction, the inner wall of the upper spherical shell is provided with an annular groove corresponding to the position of the inner rubber plate, and the end of the horizontal rod away from the inner rubber plate runs through A sphere is installed behind the inner wall of the annular groove, and a built-in plate with a wedge-shaped vertical section located below the sphere is slidably connected in the annular groove.

Preferably, the upper end surface of the lower spherical shell is provided with an embedded groove corresponding to the position of the elastic block, and the lower end of the elastic block is snapped into the embedded groove.

Preferably, the vertical section of the rubber sealing layer is sawtooth-shaped, and the vertical outer ring surface of the ring sealing plate is provided with rubber protruding teeth engaging with the rubber sealing layer.

Preferably, the surface of the connection between the sphere and the horizontal bar is covered with a circle plug.

Compared with the prior art, the present invention has the following advantages:

1. The high pressure-resistant spherical shell of an inflatable liferaft system provided by the present invention uses a sealing sheet and an outer sealing strip to form a double outer sealing defense line, and uses an inner sealing strip, a ring joint plate and a ring sealing plate to form a double inner sealing defense line , using internally attached rubber plates, horizontal rods, spheres, built-in plates and elastic blocks as a whole to form a preparatory internal sealing defense line, the overall sealing performance of the shell is greatly improved through multiple internal and external seals.

2. The embedded assembly method adopted between the elastic sealing block and the lower spherical shell in the present invention can achieve the effect of multi-directional sealing for the inside of the shell, and at the same time, under the high pressure inside the shell, the inner rubber plate is pasted under pressure. Covering the inner wall of the shell, the push rod is pushed synchronously to drive the ball to move, and the built-in plate further squeezes the elastic block downward under the action of the ball. The elastic block in the original state has been in close contact with the upper end of the lower spherical shell. The connection tightness between the elastic block and the lower spherical shell is further enhanced.

3. The rubber sealing layer 52 and the rubber protruding teeth adopt concave-convex cooperation in the present invention, and the two can form multiple overlapping seals, thereby further improving the high internal and external sealing performance of the housing 1 .

Description of drawings

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

Fig. 1 is a schematic view of the first three-dimensional structure of the high-pressure spherical shell of the inflatable liferaft system of the present invention.

Fig. 2 is a second perspective structural view of the high pressure spherical shell of the inflatable liferaft system of the present invention.

Fig. 3 is a three-dimensional structure schematic diagram of the high pressure spherical shell of the inflatable liferaft system according to the present invention.

Fig. 4 is a schematic top view of the high pressure spherical shell of the inflatable liferaft system of the present invention.

Fig. 5 is a sectional view taken along line A-A of Fig. 4 .

FIG. 6 is a partially enlarged view at X in FIG. 5 .

FIG. 7 is a partial enlarged view of Y in FIG. 5 .

Fig. 8 is a cross-sectional view taken along line B-B of Fig. 4 .

FIG. 9 is a partially enlarged view at Z in FIG. 8 .

FIG. 10 is a partial enlarged view of N in FIG. 8 .

Fig. 11 is a schematic perspective view of the structure of the lower half of the casing of the present invention.

FIG. 12 is a partial enlarged view of M in FIG. 11 .

In the figure: 1. Shell; 10. Outer ring; 11. Lifting ring; 13. Pressure sensor; 14. Outer lug; 140. No. 1 metal part; 141. No. 2 metal part; , Outer sealing strip; 4, Double seal; 40, Drive plate; 41, Ring plate; 42, Seal sheet; 50, Ring seal plate; 51, Ring plate; 52, Rubber seal layer; 53, Inner paste Rubber plate; 54, horizontal bar; 55, sphere; 56, built-in plate; 57, elastic block; 58, circle plug.

Detailed ways

In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further elaborated.

A high-pressure-resistant spherical shell of an inflatable liferaft system, comprising a shell 1, the shell 1 is a spherical shell structure with upper and lower flaps with flanges, wherein the lower spherical shell flange has a vertical edge, The upper end of the upper spherical shell is equipped with two symmetrically distributed outer lifting rings 10, the lower end of the flange of the lower spherical shell is provided with holes evenly distributed along its circumference, and the holes are connected with lifting rings 11 by bolts, and the lower end of the lower spherical shell is installed There are two symmetrically distributed pressure sensors 13, the outer surface of the lower spherical shell is equipped with outer lifting lugs 14 through bolts, and an inner lifting ring is respectively arranged in the upper and lower spherical shells.

The flange is used for the sealing connection between the two spherical shells, the outer lifting ring 10 is used for lifting the upper spherical shell, the lifting ring 11 is used for lifting the shell 1 as a whole, and the inner lifting ring is used for connecting internal components, as shown in the figure, No. 1 The metal part 140 is connected with the housing 1 by tightening bolts and bonding. The inner surface of the No. 1 metal part 140 is provided with a sealing groove, and a sealing ring is arranged in the sealing groove. The No. 2 metal part 141 and the No. 1 metal part 140 are screwed Lock and compress the sealing ring to achieve the sealing effect. The center of the first metal part 140 is provided with a connection hole to communicate with the inside of the housing 1. The second metal part 141 can be replaced with an air nozzle for the air tightness inspection inside the housing 1 and in official use. evacuate the inside of the housing 1 to achieve the effect of sealing the housing 1. There are eleven groups of holes, three groups of holes are used to install the lifting ring 11, and four groups of symmetrical holes are used for the existing guiding devices. Fixed connection, the other four sets of holes are used for fixed installation of existing clamping devices.

In the process of sealing the high-pressure spherical shell of the above-mentioned inflatable liferaft system, a sealing device is used to seal and assemble it. The sealing device includes an inner sealing strip 2 and an outer sealing strip 3, and the lower end surface of the upper spherical shell flange There are two sealing grooves with the same center, and a convex inner sealing strip 2 is arranged in the sealing groove, and the convex end of the inner sealing strip 2 is plugged with the flange end of the upper spherical shell. The outer sealing strip 3, the outer sealing strip 3 is composed of an L-shaped section and an inclined section installed at the vertical end of the L-shaped section. The L-shaped section wraps the lower spherical shell flange, and the upper end of the inclined section is in conflict with the outer surface of the upper spherical shell. 3 There is a double seal 4 between the inclined section and the flange of the upper spherical shell.

The inner sealing strip 2 and the outer sealing strip 3 form a double seal. During the compression process of the upper and lower spherical shells, under low pressure, when the two spherical shells are not fully compressed, the outer sealing strip will give priority to sealing, ensuring Sealing effect under low pressure. Under high pressure conditions, the outer sealing strip 3 and the inner and outer sealing strips 3 will play a role at the same time to ensure the sealing effect under high pressure. No matter under low pressure or high pressure, the double seal 4 always cooperates with the outer sealing strip 3 Realize the sealing of the connection between the upper spherical shell and the lower spherical shell, that is, there are three sealing lines, and the sealing effect of the shell 1 is guaranteed by using the three sealing lines; The contact surface between the sealing strip 2 and the upper spherical shell is non-planar, and the sealing contact surface increases to form a multi-directional seal. Compared with the planar contact, the non-planar contact is more unfavorable for the passage of gas, that is to say, the sealing performance is better; the outer sealing strip The vertical end of the 3L section is connected to the inclined section instead of the horizontal section, because if the horizontal section is used to seal the flange surface of the upper spherical shell, when the upper spherical shell and the lower spherical shell are assembled, the upper end of the outer sealing strip 3 Large valgus deformation is required, which is not convenient for the quick assembly of the shell 1. At the same time, the shell 1 needs to be opened under appropriate conditions. After repeated assembly and opening, the outer sealing strip 3 has a large amount of deformation, so that the sealing effect is reduced .

The double seal 4 includes a drive plate 40, the drive plate 40 is hinged on the lower end surface of the inclined section of the outer sealing strip 3, the drive plate 40 is evenly arranged along the circumference of the upper spherical shell, and the drive plate 40 is composed of two connecting plates. , the lower end of the drive plate 40 is hinged with a ring plate 41, and the lower end surface of the ring plate 41 is provided with a sealing piece 42 that is in conflict with the upper end surfaces of the two flanges; the sealing piece 42 is always completely pressed against the upper spherical shell in a natural state At the upper end of the connection between the flange and the flange of the lower spherical shell, under the condition of external high pressure, the inclined section of the outer sealing strip 3 undergoes concave deformation under pressure, but it is always in tight contact with the outer surface of the upper spherical shell. Under the action of downward pressure, relative rotation occurs around the hinge point of the two, and the force received by the ring plate 41 from the drive plate 40 can be decomposed into two parts: the horizontally directed outward sealing strip 3L section and the vertically downward force. The downward force makes the sealing sheet 42 further press against the upper end of the connection between the upper spherical shell flange and the lower spherical shell flange, so that the sealing effect is further guaranteed, and at the same time, the sealing sheet 42 and the outer sealing strip 3 form a double outer sealing defense line , improving the high outer sealing performance of the housing 1 .

The inner wall of the upper spherical shell is equipped with a ring sealing plate 50 with an inverted L-shaped vertical section, and the inner wall of the lower spherical shell is equipped with a ring connecting plate 51 corresponding to the position of the ring sealing plate 50. The upper end of the ring connecting plate 51 is provided with a ring The sealing plate 50 is plugged into the closed groove, and the vertical inner ring surface of the closed groove is provided with a rubber seal layer 52; when the upper spherical shell and the lower spherical shell are assembled, the vertical section of the ring sealing plate 50 is inserted into the closed groove, The ring sealing plate 50 and the ring connecting plate 51 form a closed space with the inner wall of the upper spherical shell and the inner wall of the lower spherical shell, that is, the connection between the ring sealing plate 50 and the ring connecting plate 51 and the inner wall of the shell 1 Between them, they play the role of partition and sealing to realize further internal sealing, and the rubber seal layer 52 can play a sealing role in the connection between the ring sealing plate 50 and the ring sealing plate 51, further improving the sealing effect of the ring sealing plate 51 and the ring sealing plate 50. For the internal sealing effect of the housing 1 , the inner sealing strip 2 , the ring joint plate 51 and the ring sealing plate 50 form a double internal sealing defense line, which greatly and effectively improves the internal sealing performance of the housing 1 .

Under the horizontal section of the ring sealing plate 50, there is an annular inner rubber plate 53 located on the side of the ring joint plate 51 far away from the center of the lower spherical shell. The inner rubber plate 53 is directly connected to the upper spherical shell and the lower spherical shell. At the position, the end surface of the inner rubber plate 53 away from the ring plate 51 is equipped with horizontal rods 54 evenly arranged along the circumferential direction, the inner wall of the upper spherical shell is provided with an annular groove corresponding to the position of the inner rubber plate 53, and the horizontal rods 54 are far away from the inner One end of the rubber plate 53 runs through the inner wall of the annular groove and a sphere 55 is installed. A wedge-shaped built-in plate 56 with a vertical section below the sphere 55 is slidably connected in the annular groove. The elastic sealing block 57.

The inner rubber plate 53, the horizontal rod 54, the ball 55, the built-in plate 56 and the elastic sealing block 57 are integrally used as a preparatory inner sealing defense line. When the line of defense fails, under the high pressure inside the shell 1, the inner rubber plate 53 is attached to the inner wall of the shell 1 under pressure, and the push rod is pushed synchronously to drive the ball 55 to move, and the built-in plate 56 is under the action of the ball 55 Squeeze the elastic block 57 further downwards, and the elastic block 57 in the original state has been in close contact with the upper end of the lower spherical shell. At this time, the connection tightness between the elastic block 57 and the lower spherical shell is further enhanced, and the achieved The sealing effect is improved.

The upper end surface of the lower spherical shell is provided with an embedded groove corresponding to the position of the elastic sealing block 57, and the lower end of the elastic sealing block 57 is clamped in the embedded groove; the lower end of the elastic sealing block 57 and the lower spherical shell are assembled by embedded The effect achieved by the method is the same as that of the inner sealing strip 2 adopting a convex structure, all in order to improve the sealing effect.

The surface of the connection between the sphere 55 and the horizontal rod 54 is covered with a circle plug 58; when the ring joint plate 51 and the ring seal plate 50 are not damaged, the circle plug 58 naturally interferes with the inner wall of the annular groove, and it seals the annular groove. , to further improve the sealing effect inside and outside the casing 1 .

The vertical section of the rubber sealing layer 52 is sawtooth-shaped, and the vertical outer ring surface of the ring sealing plate 50 is provided with rubber protruding teeth engaged with the rubber sealing layer 52; Cooperating, the two can form a multi-circle overlapping seal, so as to further improve the high internal and external sealing performance of the housing 1 .

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the specification only illustrate the principles of the present invention, and without departing from the spirit and scope of the present invention, the present invention will also There are various changes and improvements which fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (7)

1. A high pressure-resistant spherical shell of an inflatable liferaft system, comprising a shell (1), characterized in that: the shell (1) is a spherical shell structure with flanges on the upper and lower sides, wherein The lower spherical shell flange has a vertical edge, and the upper end of the upper spherical shell is equipped with two symmetrically distributed outer lifting rings (10). The lower end of the lower spherical shell flange is provided with holes evenly distributed along its circumference, and the holes pass through A lifting ring (11) is connected, two symmetrically distributed pressure sensors (13) are installed at the lower end of the lower spherical shell, and the outer surface of the lower spherical shell is installed with a No. 1 metal part (140) and a No. 2 metal part (141) through bolts. Outer lifting lugs (14) are formed, and an inner lifting ring is respectively arranged in the upper spherical shell and the lower spherical shell; In the process of sealing the high-pressure spherical shell of the above-mentioned inflatable liferaft system, it is necessary to use a sealing device to seal and assemble it. The sealing device includes an inner sealing strip (2) and an outer sealing strip (3), and the upper spherical shell The lower end surface of the flange is provided with two sealing grooves with the same center, and a convex inner sealing strip (2) is arranged in the sealing groove, and the convex end of the inner sealing strip (2) is plugged with the flange end of the upper spherical shell. , there is an outer sealing strip (3) between the two flanges, the outer sealing strip (3) is composed of an L-shaped section and an inclined section installed at the vertical end of the L-shaped section, the L-shaped section wraps the lower spherical shell flange, and the inclined section The upper end of the section is in conflict with the outer surface of the upper spherical shell, and a double seal (4) is arranged between the inclined section of the outer sealing strip (3) and the flange of the upper spherical shell. 2. The high-pressure spherical shell of an inflatable liferaft system according to claim 1, characterized in that: the double sealing member (4) includes a driving plate (40), and the outer sealing strip (3) is inclined A drive plate (40) is hinged on the lower end surface of the section, and the drive plate (40) is evenly arranged along the circumference of the upper spherical shell. The ring plate (41), the lower end surface of the circular ring plate (41) is provided with a sealing piece (42) that is all in conflict with the upper end surfaces of the two flanges. 3. The high pressure-resistant spherical shell of an inflatable liferaft system according to claim 1, characterized in that: the inner wall of the upper spherical shell is equipped with a ring sealing plate (50) with an inverted L-shaped vertical section, The inner wall of the lower spherical shell is equipped with a ring joint plate (51) corresponding to the position of the ring seal plate (50), and the upper end of the ring joint plate (51) is provided with a closed groove that is plugged and matched with the ring seal plate (50). The vertical inner ring surfaces are all provided with rubber sealing layers (52). 4. The high pressure-resistant spherical shell of an inflatable liferaft system according to claim 3, characterized in that: under the horizontal section of the ring sealing plate (50), there is a ring joint plate (51) away from the lower ball The circular inner rubber plate (53) on one side of the center of the shell, the inner rubber plate (53) is facing the connection between the upper spherical shell and the lower spherical shell, and the inner rubber plate (53) is far away from the ring joint plate (51 ) is equipped with horizontal rods (54) evenly arranged along the circumferential direction, the inner wall of the upper spherical shell is provided with an annular groove corresponding to the position of the inner rubber plate (53), and the horizontal rod (54) is far away from the inner rubber plate (53 ) is installed with a sphere (55) after passing through the inner wall of the annular groove, a wedge-shaped built-in plate (56) with a vertical section below the sphere (55) is slidably connected in the annular groove, and the lower end surface of the built-in plate (56) is installed with a The elastic block (57) that the upper end of the lower spherical shell contacts. 5. The high pressure-resistant spherical shell of an inflatable liferaft system according to claim 4, characterized in that: the upper end surface of the lower spherical shell is provided with an embedded groove corresponding to the position of the elastic block (57), The lower end of the elastic block (57) is engaged in the embedded groove. 6. The high pressure-resistant spherical shell of an inflatable liferaft system according to claim 3, characterized in that: the vertical section of the rubber sealing layer (52) is jagged, and the ring sealing plate (50) The vertical outer ring surfaces are all provided with rubber protruding teeth engaged with the rubber sealing layer (52). 7. The high-pressure spherical shell of an inflatable liferaft system according to claim 4, characterized in that: a ring plug (58) is sleeved on the surface of the connection between the sphere (55) and the horizontal rod (54) .

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