CN115027619B - Hydrostatic pressure releaser for marine life raft - Google Patents

Abstract

The invention belongs to the field of ship auxiliary equipment, and specifically discloses a hydrostatic pressure releaser for marine life rafts, comprising a shell, a support spring is fixedly installed at the bottom of an inner cavity of the shell, and a gasket is fixedly connected to the upper end of the support spring. The invention is provided with a rubber bellows, a storage cavity, a connection hole and a pressure check valve. When the hydrostatic pressure releaser is temporarily submerged into the water due to factors such as wind and waves, the water pressure briefly squeezes the diaphragm, and the rubber It takes a certain amount of time for a sufficient amount of clean water in the bellows to flow from the connection hole into the storage cavity, so the hydrostatic pressure releaser will not be released after being submerged in water for a short time, which can avoid accidental touch and unnecessary property damage. When an accident occurs and it sinks into the water, it can squeeze enough clear water and powdered quicklime to react quickly to release it. Compared with the prior art, it is more reasonable to release the cutter to cut the rope when the hydrostatic pressure reaches a predetermined value.

Description

Hydrostatic pressure release device for marine life raft

technical field

The invention belongs to the technical field of ship auxiliary equipment, in particular to a hydrostatic pressure releaser for a marine life raft.

Background technique

The hydrostatic pressure release device is a free-floating device attached to the side of the ship (such as a life raft, a satellite emergency radio position indicating beacon, etc.), which can be released automatically and manually when the ship sinks or needs to be released. Its internal mechanical structure is mainly composed of Diaphragm, spring, and blade are composed of three parts. When water enters the chamber, under the action of water pressure, the diaphragm deforms, thereby pushing up the upper spring to loosen and compress, releasing the blade to cut the rope.

However, the existing hydrostatic pressure release device still has the following deficiencies in the actual use process: first, when the existing hydrostatic pressure release device is between 1.5 and 4m in seawater depth, the diaphragm is automatically deformed by the water pressure to drive the spring to prop up the latch. Cutting the connecting rope, although this working method is sensitive, fast and efficient, the buoys and hydrostatic pressure release devices for storing life rafts are usually installed on both sides of the ship, and the ship is prone to be damaged by strong winds and waves when it is moored or moving on the sea. Large turbulence occurs below, and the ship is likely to cause continuous ups and downs on both sides of the ship during the process of turbulence and swaying, so that the hydrostatic pressure release device installed on both sides also sinks into the water for a short time. Once the hydrostatic pressure release device sinks to 1.5 When the water depth is below m or affected by the impact of waves, when the pressure reaches the preset value, it is easy to cause the hydrostatic pressure release device to respond quickly and cause false contact, cut off the connecting rope, cause the buoy to fall, and cause unnecessary property loss; secondly, the hydrostatic pressure release device The hydrostatic pressure release device needs to be installed on the connection rope, and the connection rope needs to pass through the through hole. In order to facilitate the insertion of the connection rope, the diameter of the through hole needs to be slightly larger than the diameter of the connection rope, and the ship drives the hydrostatic pressure release device and The shaking of the connecting rope, the friction and shaking between the connecting rope and the buoy and the releaser, and the long-term influence of sea water and the external environment are likely to cause corrosion to the connecting rope, which will cause wear and tear on the contact part between the connecting rope and the hydrostatic pressure release device, and damage the buoy suddenly. If it falls, the life raft will automatically deploy without accident, wasting navigation resources.

Contents of the invention

The purpose of the present invention is to provide a hydrostatic pressure release device for marine life rafts, so as to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a hydrostatic pressure release device for marine life rafts, including a housing, a support spring is fixedly installed on the bottom of the inner cavity of the housing, and a pad is fixedly connected to the upper end of the support spring. The upper surface of the gasket is fixedly connected with a diaphragm whose side is fixedly connected with the inner wall of the housing, and the middle part of the bottom end of the gasket is fixedly connected with a connecting rod, and the bottom end of the connecting rod is fixedly connected with the other end and the inner wall of the housing. The bottom of the cavity is fixedly connected with a rubber bellows, the interior of the rubber bellows is filled with clear water, the upper end of the housing is fixedly connected with an outer ring body, and the inner side of the outer ring body is fixedly connected with several groups of equicircumferentially arranged connections plate, the end of the connecting plate far away from the outer ring body is fixedly connected to the inner ring body, the bottom end of the housing is fixedly connected to a mounting block, and a storage cavity is opened inside the mounting block, and the storage cavity The interior is filled with quicklime, the upper end of the storage chamber is provided with a connection hole communicating with the inside of the rubber bellows, and the inside of the connection hole is provided with a pressure check valve with a one-way flow direction from the rubber bellows to the storage chamber , one end of the installation block is fixedly connected with a connection block, the middle part of the connection block is provided with a through hole, one side of the storage cavity is provided with a cavity inside the installation block, one end of the cavity is connected to the The storage cavity is connected, and one end of the return spring is fixedly connected to one end of the cavity close to the storage cavity, and the other end of the return spring is fixedly connected to a slider that is movably socketed with the cavity, and the slider is far away from the return spring. The middle part of one end is fixedly connected with a blade.

Preferably, ring-shaped airbags are provided on the sides of the upper and bottom of the through hole, and an installation cavity is opened inside the connecting block, and a piston plate is movably sleeved inside the installation cavity, and a piston plate at one end of the piston plate The middle part is movably socketed with bolts threadedly connected with the connecting block, and the upper end and the bottom end of the mounting cavity away from the bolts are provided with connecting passages, and the connecting passages of the two groups communicate with the insides of the two groups of airbags respectively.

Preferably, a groove is provided on one side of the middle part of the through hole, and one end of the connection spring is fixedly connected to the inside of the groove, and the other end of the connection spring is fixedly connected to the knife rest, and the middle part of one end of the knife rest A push rod inserted into the installation cavity is fixedly connected, a pressing valve is arranged in the middle of the piston plate, and a through hole is opened in the inside of the bolt.

Preferably, a fastening cover is threadedly connected to one side of the storage cavity, and the quicklime filled inside the storage cavity is in powder form.

Preferably, the connecting plate is a hard rubber plate with thick ends and thin middle.

Preferably, the push rod and the pressing valve are on the same straight line, and one end of the pressing valve communicates with the through hole.

The beneficial effects of the present invention are as follows:

1. Through the setting of the rubber bellows, storage chamber, connection hole and pressure check valve, when the ship is affected by factors such as wind and waves and causes the hydrostatic pressure release device to sink into the water for a short time, the water pressure will be temporarily squeezed Diaphragm, and it takes a certain amount of time for a sufficient amount of clear water in the rubber bellows to flow from the connection hole into the storage chamber. Therefore, the hydrostatic pressure release device in the present invention will not be released after being submerged in water for a short time, which can avoid accidental contact and avoid Cause unnecessary property loss, and at the same time, when an accident occurs and sinks into the water, a sufficient amount of clear water can be squeezed to react quickly with powdered quicklime and release, compared with the prior art where the hydrostatic pressure reaches a predetermined value and the tool is released It makes more sense to cut the rope.

2. The present invention arranges the airbag, push rod, bolt and piston plate. After the connecting rope is installed, the bolt is tightened to push the piston plate to squeeze the air inside the installation cavity into the airbag so that the airbag expands, which not only can Clamp both ends of the connecting rope inserted into the through hole to ensure that the cutting position between the cutter and the connecting rope is in a vertical state, ensuring the cutting efficiency of the blade, and at the same time avoiding friction between the connecting rope and the hydrostatic pressure release device due to shaking and damage occurs.

Description of drawings

Fig. 1 is the structural appearance schematic diagram of the present invention;

Fig. 2 is a schematic front view of the structure of the present invention;

Fig. 3 is the overall schematic diagram of the structure of the present invention;

Figure 4 is an enlarged schematic view of A in Figure 3;

Fig. 5 is a schematic diagram of the installation of the structural airbag of the present invention.

In the figure: 1. Shell; 2. Support spring; 3. Gasket; 4. Diaphragm; 5. Connecting rod; 6. Rubber bellows; 7. Outer ring body; 8. Connecting plate; 9. Inner ring body ;10, installation block; 11, storage chamber; 12, connection hole; 13, pressure check valve; 14, connection block; 15, through hole; 16, cavity; 17, return spring; 18, slide block; 19 , blade; 20, mounting cavity; 21, bolt; 22, piston plate; 23, connecting channel; 24, air bag; 25, groove; 26, connecting spring; 27, knife rest; 28, ejector rod; 29, pressing valve ; 30, through holes; 31, fastening cover.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Figures 1 to 3, the embodiment of the present invention provides a hydrostatic pressure release device for marine life rafts, including a housing 1, a support spring 2 is fixedly installed on the bottom of the inner cavity of the housing 1, and the upper end of the support spring 2 A gasket 3 is fixedly connected, the upper surface of the gasket 3 is fixedly connected with a diaphragm 4 whose side is fixedly connected with the inner wall of the housing 1, and the middle part of the bottom end of the gasket 3 is fixedly connected with a connecting rod 5, and the bottom end of the connecting rod 5 is fixed The other end is connected to the rubber bellows 6 fixedly connected to the bottom of the inner cavity of the housing 1, the inside of the rubber bellows 6 is filled with clear water, the upper end of the housing 1 is fixedly connected to the outer ring body 7, and the inner side of the outer ring body 7 is fixedly connected There are several sets of connecting plates 8 arranged in equal circles. The end of the connecting plates 8 far away from the outer ring body 7 is fixedly connected with the inner ring body 9. The bottom end of the housing 1 is fixedly connected with a mounting block 10. There is a storage space inside the mounting block 10. The object chamber 11, the inside of the storage chamber 11 is filled with quicklime, the upper end of the storage chamber 11 is provided with a connection hole 12 communicating with the inside of the rubber bellows 6, and the inside of the connection hole 12 is provided with a one-way flow direction from the rubber bellows 6 to the pressure one-way valve 13 of the storage chamber 11, one end of the installation block 10 is fixedly connected with a connection block 14, the middle part of the connection block 14 is provided with a through hole 15, and one side of the storage chamber 11 is provided with a Inside the cavity 16, one end of the cavity 16 communicates with the storage cavity 11, and one end of the cavity 16 near the storage cavity 11 is fixedly connected with one end of the return spring 17, and the other end of the return spring 17 is fixedly connected with the cavity 16. The sliding block 18 is movably socketed, and a blade 19 is fixedly connected to the middle part of the end of the sliding block 18 away from the return spring 17 .

As shown in Fig. 3, Fig. 4 and Fig. 5, annular airbags 24 are provided on the sides of the upper and bottom of the through hole 15, and an installation cavity 20 is opened inside the connection block 14, and a piston is movably sleeved inside the installation cavity 20. Plate 22, the middle part of one end of piston plate 22 is movably socketed with the bolt 21 that is threadedly connected with connection block 14, and the upper end and the bottom end of the mounting chamber 20 away from the bolt 21 side are all provided with connecting channels 23, and two groups of connecting channels 23 are respectively connected with The two groups of airbags 24 are internally connected, and the two groups of airbags 24 are annularly released on the inner wall of the through hole 15, and can clamp the connecting rope after inflated, and simultaneously seal the two ends of the through hole 15.

As shown in Figure 4, one side of the through hole 15 middle part is provided with a groove 25, and the inside of the groove 25 is fixedly connected with one end of the connection spring 26, and the other end of the connection spring 26 is fixedly connected with a knife rest 27, and one end of the knife rest 27 The middle part of the piston plate is fixedly connected with a push rod 28 inserted into the installation cavity 20, the middle part of the piston plate 22 is provided with a push valve 29, and the inside of the bolt 21 is provided with a through hole 30, and the push valve 29 belongs to a needle valve that can be opened by pressing.

Wherein, one side of the storage chamber 11 is threadedly connected with a fastening cover 31, and the quicklime filled inside the storage chamber 11 is powdery, and the powdery quicklime can increase the surface area of the quicklime, so that the quicklime reacts quickly when it contacts with water. , to complete the cutting of the connecting rope, while the quicklime has a moisture-proof effect inside the storage chamber 11, which can prevent external water vapor from entering the cavity 16 and affecting the return spring 17, and the quicklime can be checked and replaced regularly through the fastening cover 31. Ensure that the hydrostatic pressure release device can work normally, and replace the prior art to cut the connecting rope through the rebound of the compressed spring, which can avoid the elastic fatigue caused by the spring being compressed for a long time, and ensure that the connecting rope is not broken during the cutting process. There are surprises.

Among them, the connecting plate 8 is a hard rubber plate with thick ends and a thin middle, which can not only resist the impact of foreign objects in the daily process, avoid accidental contact and cut off the connecting rope, but also can be manually pressed in the emergency situation. The ring body 9 breaks the connecting plate 8 and manually squeezes to complete the cutting of the connecting rope and release the life raft.

Wherein, the ejector rod 28 and the pressing valve 29 are on the same straight line, and one end of the pressing valve 29 communicates with the through hole 30. When the hydrostatic pressure releaser is installed, the connecting rope is passed through, and at this time, by tightening the bolt 21 , the air inside the installation chamber 20 can be squeezed into the air bag 24 through the piston plate 22, so that the air bag 24 can expand, not only can clamp the two ends of the connecting rope inserted into the through hole 15, but also can play a sealing role, Avoid external water vapor and water droplets entering from both ends of the through hole 15, causing the blade 19 to be corroded, and ensure the reliability of the release. In the process of releasing the connecting rope, the tool will continue to be inserted into the knife holder 27 after cutting the connecting rope. And push the knife rest 27 and the ejector rod 28 to move toward the pressing valve 29 until the pressing valve 29 is pressed and the pressing valve 29 is opened. At this time, the inside of the installation cavity 20 connected with the air bag 24 is connected with the outside through the through hole 30, and the air bag 24 Retracting under the action of its own elasticity can make the two ends of the cut part of the connecting rope fall off automatically under the action of gravity.

Working principle and usage process:

When the ship is shaken by factors such as wind and waves, causing the hydrostatic pressure release device to sink into the water for a short time, because the water pressure acts on the diaphragm 4 for a short time, and the flow rate of the connecting hole 12 is fixed, the clear water inside the rubber bellows 6 will not be sufficient. amount enters the storage chamber 11, at this time, although the clear water also reacts with the quicklime, the reaction is small and cannot reach the level of triggering the blade 19 to cut off the connecting rope. Pressure and release are more reasonable, and after the ship is stable, the fastening cover 31 can be opened to replace the quicklime inside the storage chamber 11 in time.

In the initial stage of a ship accident, when there is enough time to react, the connecting plate 8 can be broken by pressing the inner ring body 9 first, and then the rubber bellows 6 is compressed by pressing the upper end of the diaphragm 4, and the clear water inside the rubber bellows 6 Quickly enter the storage chamber 11 from the connection hole 12, when a sufficient amount of clean water contacts the quicklime powder inside the storage chamber 11, it will quickly react, generate a large amount of heat and evaporate the clean water at the same time, resulting in a rapid increase in the internal pressure of the storage chamber 11 , thereby pushing the slider 18 to overcome the elastic force of the return spring 17 to drive the blade 19 to move to the side of the connecting rope, and quickly cut off the connecting rope, thereby completing the manual release of the life raft. When the hydrostatic pressure releaser is in seawater at a depth of 1.5-4m, the diaphragm 4 will also squeeze the rubber bellows 6 through the connecting rod 5 after being deformed by the water pressure, thereby completing the cutting of the connecting rope and completing the work.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. , the scope of the invention is defined by the appended claims and their equivalents.

Claims (4)

1. The utility model provides a marine hydrostatic pressure releaser for life raft, includes casing (1), its characterized in that: the bottom of the inner cavity of the shell (1) is fixedly provided with a supporting spring (2), the upper end of the supporting spring (2) is fixedly connected with a gasket (3), the upper surface of the gasket (3) is fixedly connected with a diaphragm (4) which is fixedly connected with the side surface and the inner wall of the shell (1), the middle part of the bottom end of the gasket (3) is fixedly connected with a connecting rod (5), the bottom end of the connecting rod (5) is fixedly connected with a rubber corrugated pipe (6) which is fixedly connected with the bottom of the inner cavity of the shell (1), the inside of the rubber corrugated pipe (6) is filled with clear water, the upper end of the shell (1) is fixedly connected with an outer ring body (7), the inner side of the outer ring body (7) is fixedly connected with a plurality of groups of connecting plates (8) which are arranged in a circle, the connecting plates (8) are kept away from one end of the outer ring body (7) and are fixedly connected with an inner ring body (9), the bottom end of the shell (1) is fixedly connected with a mounting block (10), the inside of the mounting block (10) is provided with a storage cavity (11), the inside of the storage cavity (11) is filled with the storage cavity (11), the inside of the storage cavity (11) is filled with one-way storage bellows (6), and a pressure valve (12) communicated with the inside of the bellows (6) is arranged from a one-way corrugated pipe (13), the mounting block is characterized in that one end of the mounting block (10) is fixedly connected with a connecting block (14), a through hole (15) is formed in the middle of the connecting block (14), a cavity (16) formed in the mounting block (10) is formed in one side of the storage cavity (11), one end of the cavity (16) is communicated with the storage cavity (11), the cavity (16) is close to one end of a return spring (17) fixedly connected with one end of the storage cavity (11), the other end of the return spring (17) is fixedly connected with a sliding block (18) movably sleeved with the cavity (16), a blade (19) is fixedly connected with the middle of one end, far away from the return spring (17), of the sliding block (18), annular air bags (24) are arranged on the upper portion and the bottom of the through hole (15), a mounting cavity (20) is formed in the mounting block (14), a piston plate (22) is movably sleeved in the mounting cavity (20), a bolt (21) in the middle of one end of the piston plate (22) is movably sleeved with a bolt (21) in threaded connection with the connecting block (14), the upper end and the bottom of the mounting cavity (20) are respectively provided with a connecting channel (23), two sets of connecting channels (23) are respectively formed in the upper end and the bottom of the two sets of the air bags (23), and two sets of the through holes (15) are respectively communicated with one side of the through channels (25), the inside fixedly connected with one end of connecting spring (26) of recess (25), the other end fixedly connected with knife rest (27) of connecting spring (26), the middle part fixedly connected with of knife rest (27) one end inserts ejector pin (28) inside installation cavity (20), the middle part of piston board (22) is provided with press valve (29), through hole (30) have been seted up to the inside of bolt (21).

2. The hydrostatic pressure release for an offshore liferaft according to claim 1, wherein: one side threaded connection of storing chamber (11) has fastening lid (31), the quick lime that the inside was filled of storing chamber (11) is powdered.

3. The hydrostatic pressure release for an offshore liferaft according to claim 1, wherein: the connecting plate (8) is a hard rubber plate with two thick ends and a thin middle part.

4. The hydrostatic pressure release for an offshore liferaft according to claim 1, wherein: the ejector rod (28) and the pressing valve (29) are positioned on the same straight line, and one end of the pressing valve (29) is communicated with the through hole (30).

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