A shock-absorbing LNG dual-hose lifting device and method

Abstract

This invention discloses an LNG dual-hose lifting device and method with shock absorption function. The device includes two adjustable support components, a lifting shock absorption component, and four support components. A transverse hydraulic shock absorption component is provided between U-bolts located at the same end and sleeved on the periphery of different arc-shaped support components. While lifting the two hoses, it can avoid collision between the two hoses and reduce damage during lifting. The lifting shock absorption component is provided with a longitudinal hydraulic shock absorption component, which can withstand the impact of inertia on the hoses and ensure that the bending radius of the two LNG cryogenic hoses is greater than the minimum bending radius throughout the lifting operation, thus avoiding hose breakage.

Description

Technical Field

[0001] This invention relates to the field of LNG hose lifting, and specifically to an LNG dual hose lifting device and hose lifting method with shock absorption function. Background Technology

[0002] In LNG hose transfer systems, cryogenic hoses typically undergo cross-water lifting operations before and after operation, including between ships and shore, between ships, and between vehicles and ships. Since hoses are usually over 20 meters long, with a single hose weighing over 1 ton, and the cranes used to lift the hoses are rigid equipment, the minimum bending radius of the hose is difficult to guarantee at the moment of lifting and lowering due to inertia, making it highly susceptible to damage. Furthermore, according to process requirements, LNG hose transfer systems usually contain at least two cryogenic hoses for transporting gaseous or liquid media; multiple single-hose lifting operations are time-consuming. Directly hooking two cryogenic hoses onto the same hook easily leads to collisions and abrasion, potentially causing hose rupture. Moreover, the same system often uses cryogenic hoses of various sizes, and using traditional balance beams to lift multiple hoses is prone to lifting instability. Summary of the Invention

[0003] This invention provides an LNG dual-hose lifting device and method with shock absorption function, which solves the problems of hose breakage and collision during the lifting process.

[0004] To solve the above-mentioned technical problems, the present invention provides an LNG dual hose lifting device with shock absorption function, including two adjustable support components, a lifting shock absorption component and four support components;

[0005] An adjustable support assembly includes an arc-shaped support, a support shell, and an adjustment component. The outer side of the arc-shaped support is adhered and fixed to the inner side of the support shell, and both ends of the arc-shaped support are exposed outside the support shell. The adjustment component, which can tighten or loosen the support shell, is located on both ears of the support shell.

[0006] The support assembly comprises a U-bolt and a support beam. The two ends of the U-bolt are fixed to the support beam. The support assemblies are in groups of two. The two support assemblies in each group are respectively sleeved on both ends of an arc-shaped support. A transverse hydraulic shock absorber is provided between the two U-bolts in different groups and located at the same end of the two arc-shaped supports.

[0007] The lifting shock absorption assembly includes a safety buckle, a longitudinal hydraulic shock absorber, and slings. One end of the longitudinal hydraulic shock absorber is connected to the safety buckle, and four sets of slings extend outward from the safety buckle. The ends of the four sets of slings are connected to the support beam.

[0008] Furthermore, the adjustment assembly includes an adjustment bolt, an adjustment nut, a washer, and an adjustment shim. The head of the adjustment bolt is fixed to one ear of the support shell. The other ear of the support shell and the adjustment shim are both provided with a sliding groove. The tail end of the adjustment bolt passes through the sliding groove on the other ear of the support shell and the adjustment shim and the through hole on the washer in sequence, and is locked to the adjustment nut.

[0009] Furthermore, the support beam has a bolt hole in the middle, through which the sling passes and connects to the safety buckle.

[0010] Furthermore, the other end of the longitudinal hydraulic shock absorber is provided with an annular lifting strap.

[0011] Furthermore, the two ends of the U-bolt pass through the support beam, and the fixing nut tightens and fixes the support beam and the U-bolt.

[0012] Furthermore, both the longitudinal hydraulic shock absorber and the transverse hydraulic shock absorber consist of shock-absorbing springs and hydraulic damping.

[0013] A method for lifting LNG using a dual-hose lifting device with shock absorption function is achieved through the following steps:

[0014] S1. Unscrew the fixing nuts at both ends of the support beam and the adjusting nuts in the adjustable support assembly;

[0015] S2. Place the hose into the arc-shaped support of the adjustable support assembly. Determine the tightness of the arc-shaped support according to the hose diameter, so that the suspended hose is fixed in the arc-shaped support of the two adjustable support assemblies.

[0016] S3. After fixing the suspended hose into the arc-shaped support of the adjustable support assembly, fix the U-bolt to the support beam by tightening the fixing nuts at both ends of the U-bolt.

[0017] S4. Connect the two transverse hydraulic shock absorbers in parallel to the side threaded holes of the U-shaped round steel supporting the two suspended hoses by means of threaded connection.

[0018] S5. Attach one end of each of the four equal-length slings to the attachment holes of the four support beams, and attach the other end to the safety buckle.

[0019] S6. Hang one end of the longitudinal hydraulic shock absorber with the ring-shaped lifting strap in the safety buckle, and hang the other end of the ring-shaped lifting strap in the crane hook.

[0020] S7. Lift the loop strap vertically upwards to complete the lifting of the hose.

[0021] The technical advantages of this invention are as follows: This invention includes two adjustable support components, a lifting shock absorption component, and four support components. A transverse hydraulic shock absorption component is provided between the U-bolts located at the same end and sleeved on the periphery of different arc-shaped support components. While lifting the two hoses, it can avoid collision between the two hoses and reduce damage during lifting. The lifting shock absorption component is provided with a longitudinal hydraulic shock absorption component, which can withstand the impact of inertia on the hoses and ensure that the bending radius of the two LNG cryogenic hoses is greater than the minimum bending radius throughout the lifting operation, thus avoiding hose breakage. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the LNG cryogenic hose double-pipe lifting device with shock absorption function of the present invention;

[0023] Figure 2 This is a top view of the LNG cryogenic hose double-pipe lifting device with shock absorption function of the present invention;

[0024] Figure 3 This is a schematic diagram of the adjustable support assembly of the LNG cryogenic hose double-pipe lifting device with shock absorption function of the present invention.

[0025] Figure 4 This is a schematic diagram of the lateral hydraulic shock absorber connection of the LNG cryogenic hose double-pipe lifting device with shock absorption function of the present invention.

[0026] Reference numerals: 101, arc-shaped support; 102, lateral hydraulic shock absorber; 103, support shell; 104, U-bolt; 105, support beam; 106, sling; 107, adjusting nut; 108, safety buckle; 109, longitudinal hydraulic shock absorber; 110, fixing nut; 301, washer; 302, adjusting shim. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0028] Examples, such as Figures 1 to 4 As shown, the present invention discloses an LNG dual hose lifting device with shock absorption function, including two adjustable support components, a lifting shock absorption component and four support components.

[0029] The adjustable support assembly includes an arc-shaped support 101, a support shell 103, and an adjustment component. The outer side of the arc-shaped support 101 is bonded and fixed to the inner side of the support shell 103, and both ends of the arc-shaped support 101 are exposed outside the support shell 103. The adjustment component, which can tighten or loosen the support shell 103, is provided on both ears of the support shell 103.

[0030] Specifically, the adjustment assembly includes an adjustment bolt, an adjustment nut 107, a washer 301, and an adjustment shim 302. The head of the adjustment bolt is fixed to one ear of the protective shell 103. The other ear of the protective shell 103 and the adjustment shim 302 are both provided with a sliding groove. The tail end of the adjustment bolt passes through the other ear of the protective shell 103, the sliding groove on the adjustment shim 302, and the through hole on the washer 301 in sequence and is locked to the adjustment nut 107.

[0031] The support assembly consists of U-bolts 104 and a support beam 105, with both ends of the U-bolts 104 fixed to the support beam 105.

[0032] Specifically, the two ends of the U-bolt 104 pass through the support beam 105, and the fixing nut 110 tightens and fixes the support beam 105 and the U-bolt 104.

[0033] The support components are arranged in pairs. The two support components in each pair are respectively fitted onto the two ends of an arc-shaped support 101. A transverse hydraulic shock absorber 102 is provided between two U-bolts 104 located at the same end of the two arc-shaped support 101 in different pairs. The U-bolts 104 have threads on their sides, and the two ends of the transverse hydraulic shock absorber 102 are connected to the threads on the U-bolts 104.

[0034] The lifting shock absorption assembly includes a safety buckle 108, a longitudinal hydraulic shock absorber 109, and slings 106. One end of the longitudinal hydraulic shock absorber 109 is connected to the safety buckle 108, and the other end of the longitudinal hydraulic shock absorber 109 is provided with an annular lifting strap. Four sets of slings 106 extend outward from the safety buckle 108. The ends of the four sets of slings 106 are connected to the support beam 105. The support beam 105 has a bolt hole in the middle, and the slings 106 pass through the bolt hole and connect to the safety buckle 108.

[0035] Both the longitudinal hydraulic shock absorber 109 and the transverse hydraulic shock absorber 102 consist of shock-absorbing springs and hydraulic damping.

[0036] This invention also discloses a method for lifting LNG using a dual-hose lifting device with shock absorption function, which is achieved through the following steps:

[0037] S1. Unscrew the fixing nuts 110 at both ends of the support beam 105 and the adjusting nuts 107 in the adjustable support assembly;

[0038] S2. Place the hose into the arc-shaped support 101 of the adjustable support assembly. Determine the tightness of the arc-shaped support 101 according to the hose diameter, so that the suspended hose is fixed in the arc-shaped support 101 of the two adjustable support assemblies.

[0039] S3. After fixing the suspended hose into the arc-shaped support 101 of the adjustable support assembly, fix the U-bolt 104 to the support beam 105 by tightening the fixing nuts 110 at both ends of the U-bolt 104.

[0040] S4. Connect the two transverse hydraulic shock absorbers 102 in parallel to the side threaded holes of the U-shaped round steel supporting the two suspended hoses by means of threaded connection.

[0041] S5. Attach one end of each of the four equal-length slings 106 to the attachment holes of the four support beams 105, and attach the other end to the safety buckle 108.

[0042] S6. Hang one end of the longitudinal hydraulic shock absorber 109 with the ring-shaped lifting strap in the safety buckle 108, and hang the other end of the ring-shaped lifting strap in the crane hook.

[0043] S7. Lift the ring-shaped lifting strap vertically upwards to complete the lifting of the hose. The above-described embodiments are merely preferred embodiments provided to fully illustrate the present invention, and the scope of protection of the present invention is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present invention are all within the scope of protection of the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. An LNG dual-hose lifting device with shock absorption function, characterized in that: It includes two adjustable support components, a lifting and shock absorption component, and four support components; The adjustable support assembly includes an arc-shaped support, a support shell, and an adjustment component. The outer side of the arc-shaped support is bonded and fixed to the inner side of the support shell, and both ends of the arc-shaped support are exposed outside the support shell. The adjustment component, which can tighten or loosen the support shell, is located on the two ears of the support shell. The adjustment assembly includes an adjustment bolt, an adjustment nut, a washer, and an adjustment shim. The head of the adjustment bolt is fixed to one ear of the support shell. The other ear of the support shell and the adjustment shim are both provided with a sliding groove. The tail end of the adjustment bolt passes through the sliding groove on the other ear of the support shell and the adjustment shim and the through hole on the washer in sequence and is locked to the adjustment nut. The support assembly comprises a U-bolt and a support beam. The two ends of the U-bolt are fixed to the support beam. The support assemblies are in groups of two. The two support assemblies in each group are respectively sleeved on both ends of an arc-shaped support. A transverse hydraulic shock absorber is provided between the two U-bolts in different groups and located at the same end of the two arc-shaped supports. The lifting shock absorption assembly includes a safety buckle, a longitudinal hydraulic shock absorber, and slings. One end of the longitudinal hydraulic shock absorber is connected to the safety buckle, and four sets of slings extend outward from the safety buckle. The ends of the four sets of slings are connected to the support beam. The support beam has a bolt hole in the middle, and the sling passes through the bolt hole and connects to the safety buckle; The other end of the longitudinal hydraulic shock absorber is equipped with a ring-shaped lifting strap.

2. The LNG dual-hose lifting device with shock absorption function according to claim 1, characterized in that: The two ends of the U-bolt pass through the support beam, and the fixing nut locks and fixes the support beam and the U-bolt.

3. The LNG dual-hose lifting device with shock absorption function according to claim 1, characterized in that: Both the longitudinal hydraulic shock absorber and the transverse hydraulic shock absorber consist of shock-absorbing springs and hydraulic damping.

4. A method for lifting LNG using the shock-absorbing dual-hose lifting device of claim 1, comprising the following steps, characterized in that: S1. Unscrew the fixing nuts at both ends of the support beam and the adjusting nuts in the adjustable support assembly; S2. Place the hose into the arc-shaped support of the adjustable support assembly. Determine the tightness of the arc-shaped support according to the hose diameter, so that the suspended hose is fixed in the arc-shaped support of the two adjustable support assemblies. S3. After fixing the suspended hose into the arc-shaped support of the adjustable support assembly, fix the U-bolt to the support beam by tightening the fixing nuts at both ends of the U-bolt. S4. Connect the two transverse hydraulic shock absorbers in parallel to the side threaded holes of the U-bolts supporting the two suspended hoses by means of threaded connection; S5. Attach one end of each of the four equal-length slings to the attachment holes of the four support beams, and attach the other end to the safety buckle. S6. Hang one end of the longitudinal hydraulic shock absorber with the ring-shaped lifting strap in the safety buckle, and hang the other end of the ring-shaped lifting strap in the crane hook. S7. Lift the loop strap vertically upwards to complete the lifting of the hose.

Images