CN217683783U

CN217683783U - Special ultra-low temperature balance expansion joint for LNG (liquefied Natural gas) carrier

Info

Publication number: CN217683783U
Application number: CN202221529724.1U
Authority: CN
Inventors: 陈奎; 曹银华; 刘萌萌; 许丽丽
Original assignee: Jiangsu Kui Ze Machinery Industry Co ltd
Current assignee: Jiangsu Kui Ze Machinery Industry Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-10-28
Anticipated expiration: 2032-06-17

Abstract

The utility model discloses a special ultra-low temperature balance expansion joint of LNG liquefied gas carrier, including connecting pipe and flexible connecting device, be provided with flexible pipe on the connecting pipe, the both ends of connecting pipe all are provided with the flange device, all be provided with the connecting seat for the upper and lower both sides that are located the connecting pipe between the flange device, be provided with flexible connecting device on the connecting seat, flexible connecting device includes head rod, movable rod, spacing knob, lead screw, second connecting rod and spout, the left end of head rod is provided with the movable rod, the end of movable rod is provided with the lead screw, the end of lead screw is provided with spacing knob, the end of lead screw runs through and is provided with the second connecting rod, be provided with the spout on the second connecting rod, such structure setting can the flexible unable redirecting of joint among the original device of effectual solution and connect the problem that the leakproofness leads to the junction appearance liquefied gas to leak.

Description

Special ultra-low temperature balance expansion joint for LNG (liquefied Natural gas) carrier

Technical Field

The utility model belongs to the technical field of the expansion joint is relevant, concretely relates to special ultra-low temperature balance expansion joint of LNG liquefied gas carrier.

Background

The liquefied natural gas ship, referred to as "LNG ship" for short, is a "ship" specially used for transporting liquefied natural gas, and can be divided into an independent storage tank type and a membrane type according to the structural form of a cargo tank, wherein the storage tank in the shape of a column, a tank, a sphere, etc. is placed in the ship, and the storage tank in the shape of a double-shell structure is adopted in the latter.

The existing ultra-low temperature balance expansion joint technology special for the LNG liquefied gas carrier has the following problems: 1. the joint can only stretch out and draw back in the horizontal direction when flexible in current device, can not the redirecting, 2, in current device, sealing strength is low between flange and the connecting pipe, because the liquefied gas is the liquid state, the temperature is very low, when flowing through connecting, because expend with heat and contract with cold effect, can appear the gap between flange and the connecting pipe, leads to taking place to leak.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a special ultra-low temperature balance expansion joint of LNG liquefied gas carrier to the flexible joint that provides can not redirecting and connect the low problem that leads to liquefied gas to leak of junction appearance of leakproofness in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the special ultra-low temperature balance telescopic joint for the LNG liquefied gas carrier comprises a connecting pipe and a telescopic connecting device, wherein telescopic pipes are arranged on the connecting pipe, connecting flange devices are arranged at two ends of the connecting pipe, connecting flange devices are arranged on two sides of the connecting pipe, and connecting seats are arranged on the upper side and the lower side of the connecting pipe.

Preferably, the screw rod penetrates through the sliding groove, and the sliding groove penetrates through the second connecting rod.

Preferably, the diameter of the movable rod is smaller than that of the first connecting rod, and the diameter of the movable rod is consistent with that of the chute.

Preferably, the flange connecting device comprises a flange seat, an interlayer ring, a first connecting ring, a protection ring and a second connecting ring, the interlayer ring is arranged on the inner side wall of the flange seat, the upper end of the flange seat is provided with the first connecting ring, the upper end of the flange seat, which is located on the left side of the first connecting ring, is provided with the second connecting ring, and the upper end of the flange seat, which is located between the first connecting ring and the second connecting ring, is provided with the protection ring.

Preferably, all be provided with through-hole structure on first clamping ring and the second clamping ring, and the height that highly is a little higher than the guard circle of first clamping ring and second clamping ring, be provided with through-hole structure on the guard circle, and the through-hole structure on the guard circle is unanimous with the through-hole structure level on first clamping ring and the second clamping ring.

Preferably, the interlayer ring is fixedly connected with the inner side wall of the flange seat in a welding mode, a semi-closed structure is arranged between the interlayer ring and the inner side wall of the flange seat, and the interlayer ring is connected with the connecting pipe in a sleeving mode.

Preferably, the right end of the first connecting rod and the left end of the second connecting rod sequentially penetrate through the second connecting ring, the protective ring and the first connecting ring.

Compared with the prior art, the utility model provides a special ultra-low temperature balance expansion joint of LNG liquefied gas carrier possesses following beneficial effect:

1. the utility model discloses a head rod that sets up among the flexible connecting device, the movable rod, spacing knob, the lead screw, second connecting rod and spout structure, the head rod passes through the terminal lead screw of movable rod horizontal slip in the spout of second connecting rod, flexible about the realization, the lead screw passes through spacing knob to be fixed on the spout of second connecting rod, the movable rod of head rod lower extreme rotates along the lead screw, and flexible from top to bottom through flexible pipe bending, the multi-angle of joint design is flexible in the realization device, the result of use of reinforcing expansion joint.

2. The utility model discloses a flange seat that sets up among the flange device, the intermediate layer circle, first clamping ring, guard circle and second clamping ring structure, cup joint in the intermediate layer circle on the flange seat inside wall at the both ends of connecting pipe, two head rods through among the flexible connecting device run through the second connecting pipe in proper order through the connecting seat, guard circle and first clamping ring, fix flexible pipe and connecting pipe between two flange devices, avoid the head rod when running through first clamping ring and second clamping ring locking connection through the intermediate layer circle structure, first clamping ring and second clamping ring lead to damaging because of the excessive deformation of extrusion, expend with heat and contract with cold when avoiding liquefied gas liquid to flow through the intermediate layer circle structure and lead to connecting pipe and flange device junction to produce the gap and lead to liquefied gas to leak.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic view of the whole structure of the ultra-low temperature balance expansion joint specially used for the LNG liquefied gas carrier;

fig. 2 is a schematic view of an internal connection structure of the ultra-low temperature balanced expansion joint connection flange device specially used for the LNG liquefied gas carrier;

fig. 3 is a schematic structural view of the ultra-low temperature balanced expansion joint special for the LNG liquefied gas carrier of the present invention;

fig. 4 is a schematic view of a connection structure of the ultra-low temperature balanced expansion joint special for the LNG liquefied gas carrier of the present invention;

fig. 5 is a schematic plane structure diagram of the ultra-low temperature balance expansion joint device specially used for the LNG liquefied gas carrier;

in the figure: 1. a connecting pipe; 2. a telescopic connection device; 3. a connecting seat; 4. a connecting flange device; 5. a telescopic pipe; 21. a first connecting rod; 22. a movable rod; 23. a limiting knob; 24. a screw rod; 25. a second connecting rod; 26. a chute; 41. a flange seat; 42. an interlayer ring; 43. a first connecting ring; 44. a guard ring; 45. a second connecting ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Referring to fig. 1, fig. 3, fig. 4, and fig. 5, the present invention provides a technical solution: the special ultra-low temperature balance telescopic joint for the LNG carrier, comprises a connecting pipe 1 and a telescopic connecting device 2, telescopic pipes 5 are arranged on the connecting pipe 1, connecting flange devices 4 are arranged at two ends of the connecting pipe 1, connecting seats 3 are arranged between the two connecting flange devices 4 and are located on the upper side and the lower side of the connecting pipe 1, telescopic connecting devices 2 are arranged on the connecting seats 3 and are located on the upper side and the lower side of the connecting pipe 1, the telescopic connecting devices 2 are arranged on two sides, two ends of the two telescopic connecting devices 2 are connected with the connecting flange devices 4 in a sleeved mode, each telescopic connecting device 2 comprises a first connecting rod 21, a movable rod 22, a limiting knob 23, a lead screw 24, a second connecting rod 25 and a sliding groove 26, the left end of the first connecting rod 21 is provided with the movable rod 22, the tail end of the movable rod 22 is provided with the lead screw 24, the tail end of the lead screw 24 is provided with the limiting knob 23, the tail end of the lead screw 24 is provided with the second connecting rod 25 in a penetrating manner, and the sliding groove 26 is formed in the second connecting rod 25.

Example two

Referring to fig. 2, 3, 4 and 5, the present invention provides a technical solution: the special ultra-low temperature balance expansion joint of LNG liquefied gas carrier, lead screw 24 runs through spout 26, and spout 26 runs through second connecting rod 25, the diameter of movable rod 22 is less than the diameter of head rod 21, the diameter of movable rod 22 is unanimous with spout 26's diameter, the right-hand member of head rod 21 and the left end of second connecting rod 25 run through second clamping ring 45 in proper order, guard ring 44 and first clamping ring 43, through the setting of above-mentioned structure, the multi-angle that realizes the joint design is flexible, improve expansion joint's result of use.

EXAMPLE III

Referring to fig. 1 and 2, the present invention provides a technical solution: the special ultra-low temperature balance expansion joint for the LNG liquefied gas carrier, the flange device 4 comprises a flange seat 41, an interlayer ring 42, a first connecting ring 43, a protective ring 44 and a second connecting ring 45, the interlayer ring 42 is arranged on the inner side wall of the flange seat 41, the upper end of the flange seat 41 is provided with the first connecting ring 43, the left side of the first connecting ring 43 and the upper end of the flange seat 41 are provided with the second connecting ring 45, the protective ring 44 is arranged between the first connecting ring 43 and the second connecting ring 45 and on the flange seat 41, through hole structures are arranged on the first connecting ring 43 and the second connecting ring 45, the heights of the first connecting ring 43 and the second connecting ring 45 are higher than those of the protective ring 44, through hole structures are arranged on the protective ring 44 and the through hole structures on the first connecting ring 43 and the second connecting ring 45, the interlayer ring 42 is fixedly connected with the inner side wall of the flange seat 41 in a welding mode, the interlayer ring 42 is in a sleeved semi-closed structure, the mode that the interlayer ring 42 and the second connecting ring 42 are in a mode that the interlayer ring 42 is deformed by cold contraction when the expansion joint structure is caused by the first connecting ring 45, and the expansion joint, and the flange seat is damaged by the cold contraction joint, and the expansion joint caused by the expansion joint.

The utility model discloses a theory of operation and use flow: the utility model discloses after having installed, flexible pipe 5 is respectively in two flange device 4 fixed connection through connecting pipe 1 at both ends, and through the flexible removal of connecting the flexible connecting device 2 control horizontal direction on connecting seat 3 and vertical direction between two flange 4, in flexible connecting device 2, when flexible pipe 5 body takes place around the flexible removal, the terminal movable rod 22 of head rod 21 is under the restraint of lead screw 24, control in the spout 26 that sets up along second connecting rod 25 through lead screw 24 and control, flexible about realizing, reach the flexible effect of horizontal direction, when flexible pipe 5 bends from top to bottom and stretches out and draws back, the terminal movable rod 22 of head rod 21 is under the restraint of lead screw 24, the lead screw is fixed in spout 26 by limit knob 23, movable rod 22 rotates along lead screw 24, reach the flexible effect of vertical direction, when the connecting pipe 1 at 5 both ends is connected with flange device 4, cup joint in the intermediate layer circle 42 on flange seat 1 inside wall at the both ends of head rod 1, two head rod 21 through connecting seat 3 in flexible pipe in proper order through two in the flexible connecting device 2, guard circle 44 and second connecting pipe 43, the connection ring is fixed in the effectual low sealing connection flange device that can the effectual leakage problem of the flange device that the change of the direction appears through connecting pipe 1 between the connecting flange device and the effectual connection of connecting flange device.

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

Claims

The special ultra-low temperature balance expansion joint for the LNG liquefied gas carrier comprises a connecting pipe (1) and an expansion connecting device (2), and is characterized in that: be provided with flexible pipe (5) on connecting pipe (1), the both ends of connecting pipe (1) all are provided with flange device (4), flange device (4) are provided with two, two upper and lower both sides for being located connecting pipe (1) between flange device (4) all are provided with connecting seat (3), the upper and lower both sides that just are located connecting pipe (1) on connecting seat (3) all are provided with flexible connecting device (2), flexible connecting device (2) are provided with two, two the both ends of flexible connecting device (2) are all connected with flange device (4) through the mode of cup jointing, flexible connecting device (2) include head rod (21), movable rod (22), limit knob (23), lead screw (24), second connecting rod (25) and spout (26), the left end of head rod (21) is provided with movable rod (22), the end of movable rod (22) is provided with lead screw (24), the end of lead screw (24) is provided with limit knob (23), the end of lead screw (24) is provided with second connecting rod (25), is provided with spout (26) on the second connecting rod (25).
2. The ultra-low temperature balance expansion joint special for the LNG liquefied gas carrier as claimed in claim 1, wherein: the screw rod (24) penetrates through the sliding groove (26), and the sliding groove (26) penetrates through the second connecting rod (25).
3. The ultra-low temperature balance expansion joint special for the LNG liquefied gas carrier as claimed in claim 1, wherein: the diameter of the movable rod (22) is smaller than that of the first connecting rod (21), and the diameter of the movable rod (22) is consistent with that of the sliding groove (26).
4. The ultra-low temperature balance expansion joint special for the LNG liquefied gas carrier as claimed in claim 1, wherein: the flange connecting device (4) comprises a flange seat (41), an interlayer ring (42), a first connecting ring (43), a protection ring (44) and a second connecting ring (45), the interlayer ring (42) is arranged on the inner side wall of the flange seat (41), the first connecting ring (43) is arranged at the upper end of the flange seat (41), the second connecting ring (45) is arranged at the upper end, located on the flange seat (41), of the left side of the first connecting ring (43), and the protection ring (44) is arranged at the upper end, located on the flange seat (41), of the first connecting ring (43) and the second connecting ring (45).
5. The ultra-low temperature balance expansion joint special for the LNG liquefied gas carrier as claimed in claim 4, wherein: all be provided with the through-hole structure on first clamping ring (43) and second clamping ring (45), and the height that highly is a little higher than guard circle (44) of first clamping ring (43) and second clamping ring (45), be provided with the through-hole structure on guard circle (44), and the through-hole structure on guard circle (44) is unanimous with the through-hole structure level on first clamping ring (43) and the second clamping ring (45).
6. The ultra-low temperature balance expansion joint special for the LNG liquefied gas carrier as claimed in claim 4, wherein: interlayer circle (42) are through the inside wall fixed connection of welded mode and flange seat (41), and are half enclosed construction between the inside wall of interlayer circle (42) and flange seat (41), interlayer circle (42) are connected with connecting pipe (1) through the mode that cup joints.
7. The ultra-low temperature balance expansion joint special for the LNG liquefied gas carrier as claimed in claim 2, wherein: the right end of the first connecting rod (21) and the left end of the second connecting rod (25) penetrate through the second connecting ring (45), the protective ring (44) and the first connecting ring (43) in sequence.