阅读说明：本技术 一种lng燃料舱透气桅 (Breathable mast of LNG (liquefied Natural gas) fuel tank ) 是由 徐智 刘银君 穆友江 谢锋雷 王军 于 2021-01-07 设计创作，主要内容包括：本发明公开了一种LNG燃料舱透气桅,本发明属于船舶制造领域,涉及透气桅技术,用于解决传统的透气桅无法满足LNG罐舱的通风要求的问题；通过辅助排气机构,使得透气帽遇到损坏时也可以通过辅助排气机构内的辅助进出气口排除,避免内外压强不均匀造成危险；同时由于滚动套环内还安装有滑动装置,滑动装置包括支撑座,支撑座内设有钢珠,钢珠与支撑座之间安装有滚动弹簧,且支撑座内空余处填充有润滑油；滑动装置设于进出气连接管的两侧；使得处于高空中的排气伸长杆细微变形不会带动滚动套环运动,进而保证滚动套环的可靠性；通过在主杆的底端设置应急输送装置,避免应急接口损坏。(The invention discloses a ventilating mast for an LNG fuel tank, belongs to the field of ship manufacturing, relates to a ventilating mast technology, and is used for solving the problem that the conventional ventilating mast cannot meet the ventilation requirement of an LNG tank; through the auxiliary exhaust mechanism, the ventilation cap can be discharged through the auxiliary air inlet and outlet in the auxiliary exhaust mechanism when being damaged, so that the danger caused by uneven internal and external pressure is avoided; meanwhile, a sliding device is also arranged in the rolling sleeve ring and comprises a supporting seat, a steel ball is arranged in the supporting seat, a rolling spring is arranged between the steel ball and the supporting seat, and the vacant position in the supporting seat is filled with lubricating oil; the sliding devices are arranged on two sides of the air inlet and outlet connecting pipe; the exhaust extension rod in the air is slightly deformed, so that the rolling lantern ring is not driven to move, and the reliability of the rolling lantern ring is further ensured; set up emergent conveyor through the bottom at the mobile jib, avoid emergent interface to damage.)

1. An LNG bunker ventilating mast, comprising an LNG hull, characterized in that the LNG hull comprises a deck (1), the deck (1) is provided with a ventilating mast (2), the ventilating mast (2) is connected with an LNG bunker, and the LNG bunker is arranged in the LNG hull;

the ventilating mast (2) comprises a main rod (3) and an exhaust extension rod (4);

one end of the main rod (3) is fixedly installed on the deck (1), an exhaust extension rod (4) is embedded in the other end of the main rod (3), a plurality of ventilation caps (5) are installed at the other end of the exhaust extension rod (4), the main rod (3) and the exhaust extension rod (4) are thin-walled tubes with hollow interiors, flexible pipelines (6) are arranged inside the main rod (3) and the exhaust extension rod (4), and the flexible pipelines (6) are communicated with the LNG fuel cabin;

the emergency conveying device is arranged at the bottom end of the main rod (3) and comprises a circular sleeve barrel (7), a first sleeve sinking plate (8), a second sleeve sinking plate (9), a wedge-shaped blocking block (10), a circular truncated cone-shaped sliding block (11), a hydraulic machine (12) and a hydraulic push rod (13);

the round sleeve barrel (7) is sleeved at the bottom end of the main rod (3), a round hole is formed in the position, corresponding to the deck (1), of the bottom end of the round sleeve barrel (7), and the diameter of the round hole is larger than that of the round sleeve barrel (7);

a circular truncated cone-shaped sliding block (11) is arranged in the circular hole, an air supply hose (37) hole is formed in the middle of the circular truncated cone-shaped sliding block (11), and the flexible pipeline (6) penetrates through the air supply hose (37) hole;

the first casing sinking plate (8) and the second casing sinking plate (9) are symmetrically arranged at the upper end of the circular table-shaped sliding block (11), the first casing sinking plate (8) and the second casing sinking plate (9) are both semicircular, grooves are formed in the middle parts of the first casing sinking plate (8) and the second casing sinking plate (9), and the width of each groove is larger than the wall thickness of the circular casing barrel (7);

one side of the first set of shell falling plate (8) is provided with two wedge-shaped blocking blocks (10), one side of the second set of shell falling plate (9) is provided with two wedge-shaped blocking blocks (10), and the two wedge-shaped blocking blocks (10) penetrate through the deck (1);

the two sides of the first casing sinking plate (8) and the second casing sinking plate (9) are respectively provided with a hydraulic machine (12), the output end of the hydraulic machine (12) is connected with a hydraulic push rod (13), and the front end of the hydraulic push rod (13) is fixedly provided with a push block (14).

2. The LNG bunker air mast as claimed in claim 1, characterized in that the main rod (3) in the circular casing barrel (7) is provided with an emergency interface (15), and one end of the emergency interface (15) is communicated with the flexible pipeline (6).

3. The LNG bunker air mast as claimed in claim 1, characterized in that a first platform (16) is installed on the upper middle portion of the main mast (3), an observation device (17) is installed on the first platform (16), and a climbing ladder (18) is welded between the bottom end of the main mast (3) and the first platform (16); the top end of the main rod (3) is welded with a fixing ring (19).

4. An LNG bunker air mast according to claim 1, characterized in that the middle of the exhaust extension rod (4) is provided with an auxiliary exhaust mechanism comprising a rolling collar (20) and an auxiliary air inlet and outlet (21); the auxiliary air inlet and outlet (21) is arranged on the rolling sleeve ring (20) and is positioned on two sides of the exhaust extension rod (4), and the auxiliary air inlet and outlet (21) is communicated with a ventilation opening formed in the exhaust extension rod (4) through an air inlet and outlet connecting pipe (22);

the air inlet and outlet connecting pipe (22) is arranged inside the rolling lantern ring (20);

an elastic pressing device (23) is installed between the air inlet and outlet connecting pipe (22) and the auxiliary air inlet and outlet (21), the elastic pressing device (23) comprises a fixing base (24), the fixing base (24) is welded on a metal guide pipe (25) of the auxiliary air inlet and outlet (21), a supporting block (26) is installed at one end of the fixing base (24), guide rails (27) are arranged between the other end of the fixing base (24) and the supporting block (26), the guide rails (27) are arranged in two numbers, the guide rails (27) are symmetrically arranged in two numbers, ejector rods are installed between the guide rails (27), and elastic springs (28) are installed between the ejector rods and the supporting block (26).

5. The LNG bunker air mast of claim 4, wherein the ram comprises a sliding seat (29) and a support rod (30), one end of the support rod (30) is embedded in the sliding seat (29), and the other end of the support rod (30) is fixedly connected to the outer side wall of the air inlet and outlet connecting pipe (22) through a bolt;

the sliding seat (29) is provided with a sliding groove, and the sliding groove is matched with the guide rail (27) for use;

the number of the elastic pressing devices (23) is two, and the two elastic pressing devices (23) are symmetrically arranged.

6. An LNG bunker air mast according to claim 4, characterized in that the fixing ring (19) and the auxiliary venting means are fixedly connected together by means of a tie rod (31), the tie rod (31) being embodied as a metal rod made of iron.

7. The LNG fuel tank air mast as claimed in claim 4, characterized in that the rolling collar (20) is further provided with a sliding device, the sliding device comprises a supporting seat (32), a steel ball (33) is arranged in the supporting seat (32), a rolling spring (34) is arranged between the steel ball (33) and the supporting seat (32), and the empty space in the supporting seat (32) is filled with lubricating oil; the sliding devices are arranged on two sides of the air inlet and outlet connecting pipe (22).

8. The LNG bunker air mast of claim 1, wherein the end of the exhaust extension rod (4) embedded in the main rod (3) is provided with a lifting limiting device, and the lifting limiting device comprises an upper limiting ring (35) and a lower limiting ring (36);

lower retaining ring (36) welding is in the bottom of exhaust extension rod (4), go up spacing circle (35) welding in the upper end of exhaust extension rod (4), and go up spacing circle (35) embedding mobile jib (3) in spacing circle (35), the welding has the holding ring on the inner wall of mobile jib (3), the holding ring uses with retaining ring (36) down and last spacing circle (35) cooperation.

9. An LNG bunker air mast as claimed in claim 4, characterized in that the other end of the metal conduit (25) connected to the auxiliary air inlet (21) is connected to a hose (37), the hose (37) extends all the way to the deck (1), and the hose (37) is connected to the main mast (3) by means of a fixed buckle (38).

Technical Field

The invention belongs to the field of ship manufacturing, relates to a ventilating mast technology, and particularly relates to a ventilating mast of an LNG fuel tank.

Background

The liquefied natural gas ship is called an LNG ship for short. Refers to a "ship" dedicated to the transportation of liquefied natural gas. The earliest LNG vessel was the 5100 square meter "methane bell" number in the united states in 1958, which was rebuilt with an ordinary old oil tanker. The structure form of the liquid cargo tank can be divided into an independent storage tank type and a membrane type. The former is that the storage tank with column, tank and sphere is put in the ship, the latter adopts double-shell structure, the inner shell is the bearing shell of the cargo tank, compared with the independent type, the membrane type has the advantages of high volume utilization rate and light structure weight, so the new liquefied natural gas ship, especially large-scale, mostly adopts the membrane type structure. The liquefied natural gas carrier has complex equipment, high technical requirement and high manufacturing cost.

In the prior art, ships using LNG (liquefied natural gas) as power are few, while ships using an LNG power system as a power source generally have LNG tanks arranged on an open deck without considering cabin ventilation, and a ventilating mast is used for purely ventilating the system.

To setting up LNG driving system and the LNG transport ship in the cabin, adopt above-mentioned traditional ventilative mast can't satisfy the ventilation requirement in LNG tank cabin.

Disclosure of Invention

The invention aims to provide an LNG fuel tank ventilating mast, which is used for solving the problem that the traditional ventilating mast cannot meet the ventilation requirement of an LNG tank.

The purpose of the invention can be realized by the following technical scheme:

an LNG bunker ventilating mast comprises an LNG ship body, wherein the LNG ship body comprises a deck, the deck is provided with the ventilating mast, the ventilating mast is connected with an LNG bunker, and the LNG bunker is arranged in the LNG ship body;

the ventilated mast comprises a main rod and an exhaust extension rod;

one end of the main rod is fixedly installed on the deck, an exhaust extension rod is embedded in the other end of the main rod, a plurality of ventilation caps are installed at the other end of the exhaust extension rod, the main rod and the exhaust extension rod are thin-walled tubes with hollow interiors, flexible pipelines are arranged inside the main rod and the exhaust extension rod, and the flexible pipelines are communicated with the LNG fuel cabin;

the emergency conveying device comprises a circular sleeve barrel, a first sleeve sinking plate, a second sleeve sinking plate, a wedge-shaped blocking block, a circular truncated cone-shaped sliding block, a hydraulic press and a hydraulic push rod;

the circular sleeve barrel is sleeved at the bottom end of the main rod, a circular hole is formed in the bottom end of the circular sleeve barrel, corresponding to the deck, and the diameter of the circular hole is larger than that of the circular sleeve barrel;

a circular truncated cone-shaped sliding block is arranged in the circular hole, an air supply hose hole is formed in the middle of the circular truncated cone-shaped sliding block, and the flexible pipeline penetrates through the air supply hose hole;

the first casing sinking plate and the second casing sinking plate are symmetrically arranged at the upper end of the circular table type sliding block, the first casing sinking plate and the second casing sinking plate are both in a semicircular ring shape, grooves are formed in the middle parts of the first casing sinking plate and the second casing sinking plate, and the width of each groove is larger than the wall thickness of the circular casing barrel;

one side of the first set of shell falling plate is provided with two wedge-shaped blocking blocks, one side of the second set of shell falling plate is provided with two wedge-shaped blocking blocks, and the two wedge-shaped blocking blocks penetrate through the deck;

and hydraulic machines are arranged on two sides of the first casing sinking plate and the second casing sinking plate, the output ends of the hydraulic machines are connected with a hydraulic push rod, and a push block is fixedly mounted at the front end of the hydraulic push rod.

Furthermore, an emergency interface is installed on the main rod in the circular sleeve casing sleeve, and one end of the emergency interface is communicated with the flexible pipeline.

Furthermore, a first platform is arranged on the upper middle part of the main rod, an observation device is arranged on the first platform, and a climbing ladder is welded between the bottom end of the main rod and the first platform; the top welding of mobile jib has solid fixed ring.

Furthermore, an auxiliary exhaust mechanism is installed in the middle of the exhaust extension rod and comprises a rolling lantern ring and an auxiliary air inlet and outlet; the auxiliary air inlet and outlet are arranged on the rolling lantern ring and positioned on two sides of the exhaust extension rod, and are communicated with a ventilation opening formed in the exhaust extension rod through an air inlet and outlet connecting pipe;

the air inlet and outlet connecting pipe is arranged inside the rolling lantern ring;

an elastic pressing device is installed between the air inlet and outlet connecting pipe and the auxiliary air inlet and outlet and comprises a fixing base, the fixing base is welded on a metal guide pipe of the auxiliary air inlet and outlet, a supporting block is installed at one end of the fixing base, guide rails are arranged between the other end of the fixing base and the supporting block and are symmetrically arranged, ejector rods are installed between the two guide rails, and elastic springs are installed between the ejector rods and the supporting block.

Furthermore, the ejector rod comprises a sliding seat and a supporting rod, one end of the supporting rod is embedded into the sliding seat, and the other end of the supporting rod is fixedly connected to the outer side wall of the air inlet and outlet connecting pipe through a bolt;

the sliding seat is provided with a sliding chute, and the sliding chute is matched with the guide rail for use;

the elastic pressing devices are arranged in two numbers, and the two elastic pressing devices are symmetrically arranged.

Further, the fixing ring is fixedly connected with the auxiliary exhaust mechanism through a pull rod, and the pull rod is specifically an iron metal rod.

Furthermore, a sliding device is further installed in the rolling sleeve ring, the sliding device comprises a supporting seat, a steel ball is arranged in the supporting seat, a rolling spring is installed between the steel ball and the supporting seat, and lubricating oil is filled in the vacant position in the supporting seat; the sliding devices are arranged on two sides of the air inlet and outlet connecting pipe.

Furthermore, one end of the exhaust extension rod, which is embedded into the main rod, is provided with a lifting limiting device, and the lifting limiting device comprises an upper limiting ring and a lower limiting ring;

the retainer ring welds in the bottom of exhaust extension rod down, go up the spacing circle welding in the upper end of exhaust extension rod, and go up in the spacing circle on spacing circle embedding mobile jib, the welding has the lock ring on the inner wall of mobile jib, the lock ring uses with lower retainer ring and the cooperation of last spacing circle.

Furthermore, the other end of the metal conduit connected with the auxiliary air inlet and outlet is connected with a hose which extends to the deck and is connected with the main rod through a fixing buckle.

Compared with the prior art, the invention has the beneficial effects that:

an emergency conveying device is arranged at the bottom end of the main rod and comprises a circular sleeve barrel, a first sleeve sinking plate, a second sleeve sinking plate, a wedge-shaped blocking block, a circular truncated cone-shaped sliding block, a hydraulic press and a hydraulic push rod; the circular sleeve barrel is sleeved at the bottom end of the main rod, a circular hole is formed in the bottom end of the circular sleeve barrel, corresponding to the deck, and the diameter of the circular hole is larger than that of the circular sleeve barrel; a circular truncated cone-shaped sliding block is arranged in the circular hole, an air supply hose hole is formed in the middle of the circular truncated cone-shaped sliding block, and a flexible pipeline penetrates through the air supply hose hole; the first casing sinking plate and the second casing sinking plate are symmetrically arranged at the upper end of the circular table type sliding block, the first casing sinking plate and the second casing sinking plate are both in a semicircular ring shape, grooves are formed in the middle parts of the first casing sinking plate and the second casing sinking plate, and the width of each groove is larger than the wall thickness of the circular casing barrel; one side of the first set of shell falling plate is provided with two wedge-shaped blocking blocks, one side of the second set of shell falling plate is provided with two wedge-shaped blocking blocks, and the two wedge-shaped blocking blocks penetrate through the deck; the two sides of the first casing sinking plate and the second casing sinking plate are both provided with a hydraulic machine, the output end of the hydraulic machine is connected with a hydraulic push rod, the front end of the hydraulic push rod is fixedly provided with a push block, meanwhile, a main rod in the circular casing sleeve is provided with an emergency interface, one end of the emergency interface is communicated with a flexible pipeline, so that the wedge-shaped blocking block is pulled out of the deck when an emergency situation occurs, the first casing sinking plate and the second casing sinking plate slide to both sides under the influence of gravity due to the reason that the side wall of the circular truncated cone-shaped slide block is a steep slope, when a groove formed in the middle of the first casing sinking plate and the second casing sinking plate moves to the lower end of the circular casing sleeve, the circular casing sleeve falls into the groove, so that a part of the main rod in the circular casing sleeve is exposed, the emergency interface is leaked, and the other end of a metal conduit connected with the auxiliary air inlet and outlet, the hose extends to the deck and is communicated with the emergency interface, so that emergency ventilation is realized; major accidents are avoided; after the emergency connector is used, the hydraulic press drives the hydraulic push rod to reset the first casing sinking plate and the second casing sinking plate through the push block, so that the emergency connector is prevented from being damaged;

through the auxiliary exhaust mechanism, the ventilation cap can be discharged through the auxiliary air inlet and outlet in the auxiliary exhaust mechanism when being damaged, so that the danger caused by uneven internal and external pressure is avoided; meanwhile, a sliding device is also arranged in the rolling sleeve ring and comprises a supporting seat, a steel ball is arranged in the supporting seat, a rolling spring is arranged between the steel ball and the supporting seat, and the vacant position in the supporting seat is filled with lubricating oil; the sliding devices are arranged on two sides of the air inlet and outlet connecting pipe; the exhaust extension rod in the air is enabled to deform slightly, so that the rolling lantern ring cannot be driven to move, and the reliability of the rolling lantern ring is guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 2 at B;

FIG. 4 is a schematic view of the rolling collar of the present invention;

FIG. 5 is a partial schematic view of the stem of the present invention;

FIG. 6 is a schematic view of a first set of shell landing plates of the present invention.

In the figure: 1. a deck; 2. a ventilated mast; 3. a main rod; 4. an exhaust wand; 5. a breathable cap; 6. a flexible conduit; 7. a circular sleeve shell; 8. a first set of shell fall plates; 9. a second set of shell landing plates; 10. a wedge-shaped stopper; 11. a circular truncated cone-shaped slider; 12. a hydraulic press; 13. a hydraulic push rod; 14. a push block; 15. an emergency interface; 16. a first platform; 17. an observation device; 18. climbing a ladder; 19. a fixing ring; 20. a rolling collar; 21. auxiliary air inlet and outlet ports; 22. an air inlet and outlet connecting pipe; 23. an elastic pressing device; 24. a fixed base; 25. a metal conduit; 26. a support block; 27. guiding rails; 28. an elastic spring; 29. a sliding seat; 30. a support bar; 31. a pull rod; 32. a supporting seat; 33. steel balls; 34. a rolling spring; 35. an upper limiting ring; 36. a lower retainer ring; 37. a hose; 38. and (5) fixing the buckle.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Thus, the detailed description of the embodiments of the present invention provided in the following drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention.

As shown in fig. 1 and 6, the breathable mast for the LNG bunker comprises an LNG hull, and is characterized in that the LNG hull comprises a deck 1, the deck 1 is provided with the breathable mast 2, the breathable mast 2 is connected with the LNG bunker, and the LNG bunker is arranged in the LNG hull;

the ventilated mast 2 comprises a main mast 3 and an exhaust extension mast 4;

one end of the main rod 3 is fixedly installed on the deck 1, an exhaust extension rod 4 is embedded in the other end of the main rod 3, a plurality of ventilation caps 5 are installed at the other end of the exhaust extension rod 4, the main rod 3 and the exhaust extension rod 4 are thin-walled tubes with hollow interiors, flexible pipelines 6 are arranged inside the main rod 3 and the exhaust extension rod 4, and the flexible pipelines 6 are communicated with the LNG fuel tank;

the bottom end of the main rod 3 is provided with an emergency conveying device, and the emergency conveying device comprises a circular sleeve barrel 7, a first sleeve sinking plate 8, a second sleeve sinking plate 9, a wedge-shaped blocking block 10, a circular truncated cone-shaped sliding block 11, a hydraulic press 12 and a hydraulic push rod 13;

the round sleeve barrel 7 is sleeved at the bottom end of the main rod 3, a round hole is formed in the bottom end of the round sleeve barrel 7 corresponding to the deck 1, and the diameter of the round hole is larger than that of the round sleeve barrel 7;

a circular truncated cone-shaped sliding block 11 is arranged in the circular hole, an air supply hose 37 hole is formed in the middle of the circular truncated cone-shaped sliding block 11, and the flexible pipeline 6 penetrates through the air supply hose 37 hole;

the first casing sinking plate 8 and the second casing sinking plate 9 are symmetrically arranged at the upper end of the circular table-shaped sliding block 11, the first casing sinking plate 8 and the second casing sinking plate 9 are both in a semicircular ring shape, grooves are formed in the middle parts of the first casing sinking plate 8 and the second casing sinking plate 9, and the width of each groove is larger than the wall thickness of the circular casing barrel 7;

one side of the first set of shell falling plate 8 is provided with two wedge-shaped blocking blocks 10, one side of the second set of shell falling plate 9 is provided with two wedge-shaped blocking blocks 10, and the two wedge-shaped blocking blocks 10 penetrate through the deck 1;

both sides of the first set of shell falling plate 8 and the second set of shell falling plate 9 are provided with hydraulic machines 12, the output ends of the hydraulic machines 12 are connected with hydraulic push rods 13, and the front ends of the hydraulic push rods 13 are fixedly provided with push blocks 14;

an emergency interface 15 is arranged on the main rod 3 in the circular sleeve 7, and one end of the emergency interface 15 is communicated with the flexible pipeline 6.

A first platform 16 is arranged at the upper middle part of the main rod 3, an observation device 17 is arranged on the first platform 16, and a climbing ladder 18 is welded between the bottom end of the main rod 3 and the first platform 16; the top end of the main rod 3 is welded with a fixed ring 19;

the ejector rod comprises a sliding seat 29 and a supporting rod 30, one end of the supporting rod 30 is embedded into the sliding seat 29, and the other end of the supporting rod 30 is fixedly connected to the outer side wall of the air inlet and outlet connecting pipe 22 through a bolt;

the sliding seat 29 is provided with a sliding chute which is matched with the guide rail 27 for use;

two elastic pressing devices 23 are arranged, and the two elastic pressing devices 23 are symmetrically arranged;

the fixed ring 19 and the auxiliary exhaust mechanism are fixedly connected together through a pull rod 31, and the pull rod 31 is specifically an iron metal rod;

as shown in fig. 2 and 3, an auxiliary exhaust mechanism is mounted in the middle of the exhaust extension rod 4, and comprises a rolling collar 20 and an auxiliary air inlet and outlet 21; the auxiliary air inlet and outlet 21 is arranged on the rolling lantern ring 20 and is positioned at two sides of the exhaust extension rod 4, and the auxiliary air inlet and outlet 21 is communicated with a ventilation opening formed in the exhaust extension rod 4 through an air inlet and outlet connecting pipe 22;

the air inlet and outlet connecting pipe 22 is arranged inside the rolling lantern ring 20;

an elastic pressing device 23 is installed between the air inlet and outlet connecting pipe 22 and the auxiliary air inlet and outlet 21, the elastic pressing device 23 comprises a fixing base 24, the fixing base 24 is welded on a metal guide pipe 25 of the auxiliary air inlet and outlet 21, a supporting block 26 is installed at one end of the fixing base 24, guide rails 27 are arranged between the other end of the fixing base 24 and the supporting block 26, the guide rails 27 are arranged in two numbers, the two guide rails 27 are symmetrically arranged, an ejector rod is installed between the two guide rails 27, and an elastic spring 28 is installed between the ejector rod and the supporting block 26.

As shown in fig. 4, a sliding device is further installed in the rolling collar 20, the sliding device includes a support seat 32, a steel ball 33 is installed in the support seat 32, a rolling spring 34 is installed between the steel ball 33 and the support seat 32, and the remaining space in the support seat 32 is filled with lubricating oil; the sliding means are provided at both sides of the inlet and outlet connection pipe 22.

As shown in fig. 5, a lifting limiting device is installed at one end of the exhaust extension rod 4 embedded in the main rod 3, and comprises an upper limiting ring 35 and a lower limiting ring 36;

lower retaining ring 36 welds in the bottom of exhaust extension rod 4, goes up spacing ring 35 and welds in the upper end of exhaust extension rod 4, and goes up spacing ring 35 embedding mobile jib 3 in spacing ring 35, and the welding has the support ring on the inner wall of mobile jib 3, and the support ring uses with lower retaining ring 36 and the cooperation of last spacing ring 35.

The other end of the metal conduit 25 connected to the auxiliary air inlet 21 is connected to a hose 37 as shown in fig. 1, the hose 37 extends to the deck 1, and the hose 37 is connected to the main pole 3 through a fixing buckle 38.

Specifically, in the specific implementation of the present invention, the observation device 17 may be a panoramic imaging camera device, wherein the camera device includes a servo stabilization platform and a display control mechanism that are connected to each other, the servo stabilization platform is disposed on the first platform 16, and the display control mechanism is disposed inside the cabin; a visible light imaging sensor, an infrared imaging sensor and a laser range finder are arranged inside the servo stabilizing platform, a plurality of eagle eye imaging cameras are uniformly distributed outside the servo stabilizing platform, and the plurality of eagle eye imaging cameras are used for monitoring the periphery of the boat by 360 degrees; the servo stable platform comprises a base, an orientation adjusting mechanism and a pitching mechanism, the eagle eye imaging cameras are distributed on the base, and the pitching mechanism is connected with the base through the orientation adjusting mechanism; the eagle eye imaging camera is positioned in the base, a transparent protection window is arranged at the position of the base corresponding to the eagle eye imaging camera, the direction adjusting mechanism comprises a direction shaft and a direction motor which are mutually connected, and a direction angle measuring element is arranged on the direction shaft; the pitching mechanism comprises an airtight installation package and a pitching frame, the airtight installation package is connected with the position adjusting mechanism through the pitching frame, the visible light imaging sensor, the infrared imaging sensor and the laser range finder are all located in the airtight installation package, the laser range finder is further arranged in the airtight installation package, and optical axes of the visible light imaging sensor, the infrared imaging sensor and the laser range finder are parallel to each other; the pitching frame comprises a U-shaped frame, a first pitching shaft and a second pitching shaft, the first pitching shaft and the second pitching shaft are arranged on two sides of the airtight installation package, one end of each of the first pitching shaft and the second pitching shaft is connected with the U-shaped frame, and the other end of each of the first pitching shaft and the second pitching shaft is located in the airtight installation package; a pitching angle measuring element is arranged on the first pitching shaft, and the second pitching shaft is connected with a pitching motor; the display control mechanism comprises a display screen, a control device, a control cabinet and a video recorder, wherein the display screen, the video recorder, the eagle eye imaging camera, the visible light imaging sensor, the infrared imaging sensor and the laser range finder are all connected with the control cabinet; the control cabinet comprises an information processing component and a servo control circuit board, and the display screen, the control device, the video recorder and the servo control circuit board are all connected with the information processing component and carry out information interaction; the servo stabilization platform further comprises a visible light imaging sensor, an infrared imaging sensor, a laser range finder and an eagle eye imaging camera which are connected with the information processing component and the servo control circuit board through a servo stabilization platform signal interface and perform information interaction.

More specifically, in the specific implementation of the invention, an LNG ship is needed;

in the specific implementation of the invention, the emergency conveying device comprises a circular sleeve barrel 7, a first sleeve sinking plate 8, a second sleeve sinking plate 9, a wedge-shaped blocking block 10, a circular truncated cone-shaped sliding block 11, a hydraulic machine 12 and a hydraulic push rod 13; the round sleeve barrel 7 is sleeved at the bottom end of the main rod 3, a round hole is formed in the bottom end of the round sleeve barrel 7 corresponding to the deck 1, and the diameter of the round hole is larger than that of the round sleeve barrel 7; a circular truncated cone-shaped sliding block 11 is arranged in the circular hole, an air supply hose 37 hole is formed in the middle of the circular truncated cone-shaped sliding block 11, and the flexible pipeline 6 penetrates through the air supply hose 37 hole; the first casing sinking plate 8 and the second casing sinking plate 9 are symmetrically arranged at the upper end of the circular table-shaped sliding block 11, the first casing sinking plate 8 and the second casing sinking plate 9 are both in a semicircular ring shape, grooves are formed in the middle parts of the first casing sinking plate 8 and the second casing sinking plate 9, and the width of each groove is larger than the wall thickness of the circular casing barrel 7; one side of the first set of shell falling plate 8 is provided with two wedge-shaped blocking blocks 10, one side of the second set of shell falling plate 9 is provided with two wedge-shaped blocking blocks 10, and the two wedge-shaped blocking blocks 10 penetrate through the deck 1; the two sides of the first casing sinking plate 8 and the second casing sinking plate 9 are both provided with a hydraulic machine 12, the output end of the hydraulic machine 12 is connected with a hydraulic push rod 13, the front end of the hydraulic push rod 13 is fixedly provided with a push block 14, meanwhile, a main rod 3 in the circular casing barrel 7 is provided with an emergency interface 15, one end of the emergency interface 15 is communicated with a flexible pipeline 6, so that the wedge-shaped block 10 is pulled out of the deck 1 in case of emergency, the first casing sinking plate 8 and the second casing sinking plate 9 slide to two sides under the influence of gravity due to the reason that the side wall of the circular truncated cone-shaped slide block 11 is a steep slope, when the groove arranged in the middle of the first casing sinking plate 8 and the second casing sinking plate 9 moves to the lower end of the circular casing barrel 7, the circular casing barrel 7 falls into the groove, so that a part of the main rod 3 in the circular casing barrel 7 is exposed, and the emergency interface 15 leaks out, meanwhile, the other end of the metal conduit 25 connected with the auxiliary air inlet and outlet 21 is connected with a hose 37, the hose 37 extends to the deck 1, and the hose 37 is communicated with the emergency interface 15, so that emergency ventilation is realized; major accidents are avoided; after the emergency connector is used, the hydraulic press 12 drives the hydraulic push rod 13 to reset the first casing sinking plate 8 and the second casing sinking plate 9 through the push block 14, so that the emergency connector 15 is prevented from being damaged;

the auxiliary exhaust mechanism can also exhaust the air permeable cap through the auxiliary air inlet and outlet 21 in the auxiliary exhaust mechanism when the air permeable cap is damaged, so that the danger caused by uneven internal and external pressure is avoided; meanwhile, as the sliding device is also arranged in the rolling sleeve ring 20 and comprises a supporting seat 32, a steel ball 33 is arranged in the supporting seat 32, a rolling spring 34 is arranged between the steel ball 33 and the supporting seat 32, and the remaining part in the supporting seat 32 is filled with lubricating oil; the sliding devices are arranged on two sides of the air inlet and outlet connecting pipe 22; the slight deformation of the exhaust extension rod 4 in the air does not drive the rolling sleeve ring 20 to move, so that the reliability of the rolling sleeve ring 20 is ensured;

when high wind or extreme bad weather occurs at a high place, a sliding device is arranged in the rolling sleeve ring 20 and comprises a supporting seat 32, a steel ball 33 is arranged in the supporting seat 32, a rolling spring 34 is arranged between the steel ball 33 and the supporting seat 32, and lubricating oil is filled in the remaining space in the supporting seat 32; so that the rolling collar 20 can slide over the exhaust wand 4 to avoid damage.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The specific meanings of the above terms in the present invention can be understood in specific cases by those skilled in the art; the preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.