CN-121973894-A - Novel fastener, mounting method thereof, containment system and ship

CN121973894ACN 121973894 ACN121973894 ACN 121973894ACN-121973894-A

Abstract

The invention discloses a novel fastener, an installation method thereof, a containment system and a ship, wherein a pressure-bearing connecting block is arranged between a lower supporting plate and an upper supporting plate, a secondary layer stress buffer ring is arranged in a containing groove of the pressure-bearing connecting block, a main layer insulating stress buffer piece is arranged in a fixing groove, the lower supporting plate is fixed on the upper surface of a supporting wood wedge block of a secondary layer insulating box, simultaneously, the first fixing screw is used for connecting the secondary layer stress buffer ring with the ship body structure, the second fixing screw is used for fixing the upper layer support plate with the wood wedge block of the secondary layer insulation box, and the secondary layer stress buffer ring and the main layer insulation stress buffer piece can be used for bearing and absorbing structural deformation from the primary layer insulation and the secondary layer insulation, so that damage to the enclosure system structure is avoided.

Inventors

LI HUAN
LU LINJIE
XU ANNAN
DUAN BIN
CAO RUIYANG
BAO JUNJIE
LIU HENG

Assignees

沪东中华造船(集团)有限公司

Dates

Publication Date: 20260505
Application Date: 20260113

Claims (13)

1. A novel fastener is characterized by comprising a lower supporting plate (3), an upper supporting plate (12), a pressure-bearing connecting block (8), a sublayer stress buffer piece (4), a first fixing screw (1) and a second fixing screw (13), The lower supporting plate (3) is fixed on the upper surface of a supporting wood wedge block of the secondary insulating box, the lower supporting plate (3) is arranged on the lower surface of the pressure-bearing connecting block (8), the upper supporting plate (12) is arranged above the pressure-bearing connecting block (8) and a first buffer gap (18) is formed between the lower supporting plate and the pressure-bearing connecting block, the lower supporting plate (3), the upper supporting plate (12) and the pressure-bearing connecting block (8) are fixed through fixing bolts (10) which longitudinally penetrate through the lower supporting plate, a main insulating stress buffer piece (9) is arranged between a rod body of the fixing bolts (10) and the pressure-bearing connecting block (8), and a second buffer gap (19) is formed between the contact surface of the main insulating stress buffer piece (9) and the pressure-bearing connecting block (8); The center of the pressure-bearing connecting block (8) is provided with a containing groove (2), the secondary layer stress buffer ring (4) is arranged in the containing groove (2), One end of the first fixing screw (1) is fixed with the bulkhead of the ship body, the other end of the first fixing screw passes through a gap between two adjacent sub-layer insulating boxes and is fixed with the sub-layer stress buffer piece (4), One end of the second fixing screw rod (13) is fixed with the upper supporting plate (12), the other end of the second fixing screw rod passes through the supporting wood wedge block of the main layer insulation box and is fixed with the top fixing plate (14), and the top fixing plate (14) is fixed on the upper surface of the supporting wood wedge block of the main layer insulation box.
2. The novel fastener according to claim 1, wherein the upper end of the first fixing screw (1) penetrates through the sub-layer stress buffer ring (4) and then is fixed with a sub-layer self-locking nut (6), and a temperature sensor (7) for monitoring the temperature in an insulation space of the enclosure system is arranged in the sub-layer self-locking nut (6).
3. The novel fastener according to claim 1 or 2, wherein the upper surface of the sublayer stress buffer member (4) is further provided with a lower fixing plate (5), and the end part of the first fixing screw (1) is fixed with a sublayer self-locking nut (6) thereof after passing through the sublayer stress buffer ring (4) and the lower fixing plate (5).
4. The novel fastener according to claim 1, wherein the upper surface of the top fixing plate (14) is further provided with a spring washer (15), the upper end of the second fixing screw (13) passes through the top fixing plate (14) and the spring washer (15) and then is fixed with a main layer self-locking nut (16), and a pressure sensor (17) for monitoring the oscillation stress of the main layer film is arranged in the main layer self-locking nut (16).
5. The novel fastener according to claim 1, wherein the two sides of the accommodating groove (2) of the pressure-bearing connecting block (8) are provided with fixing grooves, the lower supporting plate (3) is provided with lower fixing holes opposite to the fixing grooves, the upper supporting plate (12) is provided with upper fixing holes opposite to the fixing grooves, the center of the upper supporting plate (12) is provided with a threaded slot hole for fixing the upper supporting plate (12) and the second fixing screw (13), The head of the fixing bolt (10) is arranged in the upper fixing hole, the rod body of the fixing bolt sequentially penetrates through the upper fixing hole, the fixing groove and the lower fixing hole, and internal threads matched with external threads on the rod body of the fixing bolt (10) are arranged on the lower part of the inner wall of the upper fixing hole and the whole inner wall of the lower fixing hole.
6. The novel fastener according to claim 5, wherein the upper fixing hole is a reducing hole with a wide upper part and a narrow lower part, and a rotation stopping gasket (11) is further arranged between the head of the fixing bolt (10) and the reducing step of the upper fixing hole.
7. The novel fastener according to claim 5, wherein a sealing gasket is arranged on the upper surface of the upper supporting plate (12) at a position corresponding to the thread slot, the lower end of the second fixing screw (13) penetrates through the sealing gasket and then is fixed in the thread slot through threads, and the sealing gasket is fixed with the sub-layer film through welding.
8. The novel fastener according to claim 1, wherein a buffer gap of 1mm-2mm is arranged between the contact surface of the main layer insulating stress buffer piece (9) and the pressure-bearing connecting block (8).
9. The novel fastener according to claim 1, wherein the secondary layer stress buffer ring (4) and the primary layer insulating stress buffer (9) are made of flexible composite materials.
10. A method of installing a new fastener according to any one of claims 1 to 9, comprising the steps of: s1, welding and fixing the lower end part of a first fixing screw (1) at a scribing point on a bulkhead of a ship body, sequentially sleeving a lower supporting plate (3) and a sublayer stress buffer piece (4) on the first fixing screw (1), clamping part of the sublayer stress buffer piece (4) in the lower supporting plate (3), and fixing the lower supporting plate (3) on the upper surface of a supporting wood wedge block of a sublayer insulation box; S2, placing the pressure-bearing connecting block (8) on the upper surface of the lower supporting plate (3), and placing the other part of the sub-layer stress buffer piece (4) in the accommodating groove (2) of the pressure-bearing connecting block (8); S3, placing an upper supporting plate (12) above a pressure-bearing connecting block (8), keeping a first buffer gap (18) between the upper supporting plate (12) and the pressure-bearing connecting block (8), fixing a lower supporting plate (3), the upper supporting plate (12) and the pressure-bearing connecting block (8) by utilizing a plurality of fixing bolts (10), sleeving a main layer insulating stress buffer piece (9) on the outer side of a rod body of the fixing bolts (10) positioned in the pressure-bearing connecting block (8), and keeping a second buffer gap (19) between the contact surfaces of the main layer insulating stress buffer piece (9) and the pressure-bearing connecting block (8); S4, fixing the lower end part of the second fixing screw rod (13) with the upper supporting plate (12), fixing the upper end part of the second fixing screw rod with the top fixing plate (14) after penetrating through the supporting wood wedge block of the main layer insulation box, and fixing the top fixing plate (14) on the upper surface of the supporting wood wedge block of the main layer insulation box.
11. A containment system characterized in that the primary and secondary insulation boxes of the containment system are secured to a hull structure by the novel fastener of any of claims 1-9.
12. A vessel comprising the containment system of claim 11.
13. The vessel according to claim 12, wherein the vessel is any one of an LNG ship, an LNG refueling ship, an LNG FSRU ship, an LNG power ship.

Description

Novel fastener, mounting method thereof, containment system and ship Technical Field The invention relates to the technical field of ship construction, in particular to a novel fastener, an installation method thereof, a containment system and a ship. Background In the development direction of the LNG containment system, the membrane type containment system occupies the absolute position of the LNG equipment containment system due to the advantages of high bilge utilization rate, light structure weight and the like, 643 large LNG transport vessels equipped with the membrane type containment system all over the world currently occupy 84.5% of the whole market share, and 315 thin membrane type containment systems occupy nearly 100% of the market share in the hand-held orders of the large LNG transport vessels. The NO96 super+ type thin film containment system is used as a GTT (gas-liquid-gas) latest technology, has the characteristics of low evaporation rate, high loading capacity and the like, and has great competitive power in the market of large LNG transport ships and LNG industrial chain equipment. The fastening piece in the NO96 super+ type thin film enclosure system mainly fixes the main layer insulating module and the sub layer insulating module on the ship structure, the fastening piece is connected with the main layer insulating module, the sub layer insulating module and the ship structure through rigid springs at present, when the enclosure system structure deforms, the fastening piece cannot respond to deformation in real time, and the shaking impact stress is buffered and released after the fastening piece is delayed, so that the enclosure system is easy to damage. Most of the existing fasteners have single functions, various connecting procedures with the main insulating box and the secondary insulating box, and complex structures, so that the construction cost is high and the period is long. Disclosure of Invention In view of the above, the present invention provides a novel fastener, an installation method thereof, a containment system and a ship, which are used for solving the problems in the prior art. A novel fastener comprises a lower supporting plate, an upper supporting plate, a pressure-bearing connecting block, a sublayer stress buffer piece, a first fixing screw rod and a second fixing screw rod, The lower supporting plate is fixed on the upper surface of a supporting wood wedge block of the secondary insulating box, the lower supporting plate is arranged on the lower surface of the pressure-bearing connecting block, the upper supporting plate is arranged above the pressure-bearing connecting block, a first buffer gap is formed between the lower supporting plate and the pressure-bearing connecting block, the lower supporting plate, the upper supporting plate and the pressure-bearing connecting block are fixed through fixing bolts which longitudinally penetrate through the lower supporting plate and the pressure-bearing connecting block, a main insulating stress buffer piece is arranged between a rod body of the fixing bolt and the pressure-bearing connecting block, and a second buffer gap is formed between the contact surface of the main insulating stress buffer piece and the pressure-bearing connecting block; The center of the pressure-bearing connecting block is provided with an accommodating groove, the secondary layer stress buffer ring is arranged in the accommodating groove, One end of the first fixing screw rod is fixed with the bulkhead of the ship body, the other end of the first fixing screw rod passes through a gap between two adjacent sub-layer insulating boxes and is fixed with the sub-layer stress buffer piece, One end of the second fixing screw rod is fixed with the upper supporting plate, the other end of the second fixing screw rod passes through the supporting wood wedge block of the main layer insulation box and is fixed with the top fixing plate, and the top fixing plate is fixed on the upper surface of the supporting wood wedge block of the main layer insulation box. Preferably, the upper end part of the first fixing screw rod penetrates through the sub-layer stress buffer ring and then is fixed with a sub-layer self-locking nut of the first fixing screw rod, and a temperature sensor used for monitoring the temperature in an insulation space of the enclosure system is arranged in the sub-layer self-locking nut. Preferably, the upper surface of the sublayer stress buffer part is also provided with a lower fixing plate, and the end part of the first fixing screw rod penetrates through the sublayer stress buffer ring and the lower fixing plate and is fixed with a sublayer self-locking nut of the sublayer stress buffer ring. Preferably, the upper surface of the top fixing plate is also provided with a spring washer, the upper end part of the second fixing screw rod penetrates through the top fixing plate and the spring washer and then is fixed with a main layer self-