CN103899915B - LNG ship loading arm - Google Patents
LNG ship loading arm Download PDFInfo
- Publication number
- CN103899915B CN103899915B CN201410092183.4A CN201410092183A CN103899915B CN 103899915 B CN103899915 B CN 103899915B CN 201410092183 A CN201410092183 A CN 201410092183A CN 103899915 B CN103899915 B CN 103899915B
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- nitrogen
- arm
- flange
- ring
- inner ring
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 163
- 229910052757 nitrogen Inorganic materials 0.000 claims description 82
- 238000007789 sealing Methods 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 241001125879 Gobio Species 0.000 claims description 10
- 230000003068 static effect Effects 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 3
- 241001125877 Gobio gobio Species 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000002829 nitrogen Chemical class 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses and a kind ofly keep swivel joint inner dry and the LNG ship loading arm of easy accessibility, comprise the column be connected successively, overcurrent pipeline, gudgeon case, external support case, inner arm, outer arm and Pull breaking ualve, between overcurrent pipeline and inner arm, between inner arm and outer arm, be connected respectively by swivel joint between outer arm and Pull breaking ualve, the swivel joint connecting inner arm and outer arm is positioned at the hinged place of internal support case and external support case, described swivel joint comprises left flange, right flange, inner ring and outer ring, left Flange joint inner ring forms anticlockwise parts, right Flange joint outer ring forms right rotation parts, anticlockwise parts can rotate relatively with right rotation parts, on the right side of left flange, space is formed between outside inner ring and on the left of outer ring, gap is provided with nitrogen-sealed circle.Its advantage is: after adopting above-mentioned swivel joint, ensure that normal work of the present invention, once need repairing, can carry out online, thus increase work efficiency.
Description
Technical field
The present invention relates to a kind of LNG ship loading arm.
Background technique
Low temperature oil filling riser is the domestic industrial products just developed in recent years, is mainly used in the handling of petrochemical industry cryogen.Its technological core parts are swivel joint, and its main structure of the main product on domestic market consists of left flange, right flange, inner ring, outer ring and Sealing.The rationality of rotary joint structure and the excellent of design size decide sealing and the operating characteristics of swivel joint.Below the key problem in technology point of existing swivel joint is introduced in detail:
Existing swivel joint rotational structure divides two-part, and left flange and inner ring are integrated, and right flange and outer ring are integrated.These two-part rotate relatively, rely on the seal ring between its fitting surface to ensure sealing.Because nitrogen-sealed circle is arranged between inner ring and outer ring, cause two problems:
1. install, dismantle and extremely bother.Because need to assemble the steel ball being covered with a week between inside and outside circle.Therefore, need special tool during installation, compress and rotate inside and outside circle, steel ball could be installed; During dismounting, cannot change at the scene, need to pull down whole oil filling riser parts, transport workshop back, more first dismantle steel ball with special tool.
2. nitrogen-sealed circle position easily freezes, and cannot rotate swivel joint.Because nitrogen-sealed circle is arranged between inside and outside circle, therefore just there is a groove placing seal ring this position, and when oil filling riser transmission cryogenic media, this position just easy ponding also freezes.
3. due to the elastic force effect of nitrogen-sealed circle after the bearing assemble formed by inner ring, outer ring and steel ball, bearing rotary frictional force is increased, rotates dumb.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of and keep the inner drying of swivel joint and the LNG ship loading arm of easy accessibility.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of LNG ship loading arm, comprises the column be connected successively, be arranged on the overcurrent pipeline in column, be arranged on the gudgeon case on column, be hinged on the internal support case on gudgeon case, the external support case hinged with internal support case end, inner arm, outer arm and Pull breaking ualve, between overcurrent pipeline and inner arm, between inner arm and outer arm, be connected respectively by swivel joint between outer arm and Pull breaking ualve, the swivel joint connecting inner arm and outer arm is positioned at the hinged place of internal support case and external support case, and described swivel joint comprises left flange, right flange, inner ring and outer ring, left Flange joint inner ring forms anticlockwise parts, and right Flange joint outer ring forms right rotation parts, and anticlockwise parts can rotate relatively with right rotation parts, on the right side of left flange, be formed with space between outside inner ring and on the left of outer ring, gap is provided with nitrogen-sealed circle, and nitrogen-sealed circle left side contacts with left flange seal, and nitrogen-sealed circle right side seals with outer ring and contacts.
The support plate on gudgeon case is hinged in the middle part of described internal support case comprises, one end of support plate is provided with balancing weight, the other end is connected with two inner support tube be parallel to each other, the other end of two inner support tube is connected and the hinged rotating disk in joint, external support case comprises two outer support pipes be parallel to each other, one end of two outer support pipes is separately fixed on rotating disk, is connected and fixes with outer arm after the other end is bending.
Described support plate is provided with positioning plate, positioning plate offers positioning hole, column is provided with fixed plate, fixed plate is provided with pilot hole, fixed plate is provided with T-shaped latch, the lower end of latch is through pilot hole, match with positioning hole in the upper end of latch, the vertical section of latch has been set in spring, one end of spring and the horizontal segment of latch offset, the upper surface of the other end and fixed plate offsets, and the lower end of column is hinged with handle, is connected between handle and the lower end below fixed plate of latch by chain or connecting rod.
Described left flange right side place has step, and nitrogen-sealed circle left side contacts with the sealing bottom surface of step, and the enclosing be positioned at outside bench floor is blocked in outside nitrogen-sealed circle.
Be provided with realizing active sealing circle between the realizing active sealing circle groove that on the right side of described inner ring and right flange left side is arranged, the realizing active sealing circle groove that right flange left side is arranged has for stopping the seam that realizing active sealing circle slides.
Between the left side o-ring groove that on the right side of described left flange and inner ring left side is arranged, left side seal ring is installed; Between the right side o-ring groove that on the left of right flange and right side, outer ring is arranged, right side seal ring is installed; Between the main static sealing ring groove that inner ring left side and left flange right side are arranged, main static sealing ring is installed, between the secondary seal circle groove that on the left of right flange and inner ring right side is arranged, secondary seal circle is installed.
Have the steel ball being covered with a week between described inner ring, outer ring, steel ball size is 9.525 ± 0.1mm.
Described left flange is provided with nitrogen inlet or nitrogen outlet, left flange, inner ring, left channel of nitrogen is respectively arranged with in outer ring and right flange, interior channel of nitrogen, outer channel of nitrogen and right channel of nitrogen, wherein interior channel of nitrogen contains an annular housing centered by swivel joint medial axis, nitrogen inlet, left channel of nitrogen, interior channel of nitrogen, space, outer channel of nitrogen, right channel of nitrogen and nitrogen outlet communicate successively, or nitrogen outlet, left channel of nitrogen, interior channel of nitrogen, space, outer channel of nitrogen, right channel of nitrogen and nitrogen inlet communicate successively, right flange is provided with corresponding nitrogen outlet or nitrogen inlet, nitrogen inlet and nitrogen outlet are axially arranged, annular housing meets 80%M >=L >=70%M at inner ring length L axially, M is inner ring length in the axial direction, the two ends in the axial direction of annular housing are equal with inner ring two ends spacing axially.
Also comprise PLC control system and be separately positioned on the sensor on inner arm and outer arm.
The invention has the beneficial effects as follows: after adopting above-mentioned novel swivel joint, ensure that normal work of the present invention, once need repairing, can keep in repair online, thus increase work efficiency.
Accompanying drawing explanation
Fig. 1 is the plan view of LNG ship loading arm of the present invention;
Fig. 2 is the structural drawing of swivel joint in Fig. 1;
Fig. 3 is the right elevation of Fig. 1;
Fig. 4 is the partial enlarged drawing of Fig. 3;
Fig. 5 is K direction view in Fig. 4.
In figure: 1, right flange, 2, realizing active sealing circle, 3, space 4, secondary seal circle, 5, outer ring, 6, steel ball, 7, inner ring, 8, left side seal ring, 9, nitrogen-sealed circle, 10, left flange, 11, ferrule fitting, 13, main static sealing ring, 16, right side seal ring, 17, column, 18, overcurrent pipeline, 19, gudgeon case, 20, internal support case, 21, external support case, 22, inner arm, 23, outer arm, 24, Pull breaking ualve, 25, swivel joint, 26, support plate, 27, lower rotary table, 28, inner support tube, 29, top rotary table, 30, rope, 31, outer support pipe, 32, positioning plate, 33, fixed plate, 34, latch, 35, spring, 36, handle, 37, chain, 38, nitrogen inlet, 39, nitrogen outlet, 40, left channel of nitrogen, 41, interior channel of nitrogen, 42, outer channel of nitrogen, 43, right channel of nitrogen, 44, annular housing, 45, balancing weight.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiment of the invention scheme in detail.
As Fig. 1, shown in Fig. 3 and Fig. 4, LNG ship loading arm of the present invention, comprise the column 17 be connected successively, be arranged on the overcurrent pipeline 18 in column 17, be arranged on the gudgeon case 19 on column 17, be hinged on the internal support case 20 on gudgeon case 19, the external support case 21 hinged with internal support case 20 end, inner arm 22, outer arm 23 and Pull breaking ualve 24, between overcurrent pipeline 18 and inner arm 22, between inner arm 22 and outer arm 23, be connected respectively by swivel joint 25 between outer arm 23 and Pull breaking ualve 24, the swivel joint 25 connecting inner arm 22 and outer arm 23 is positioned at the hinged place of internal support case 20 and external support case 21.As shown in Figure 2, described swivel joint 25 comprises left flange 10, right flange 1, inner ring 7 and outer ring 5, left flange 10 connects inner ring 7 and forms anticlockwise parts, right flange 1 connects outer ring 5 and forms right rotation parts, anticlockwise parts can rotate relatively with right rotation parts, space 3 is formed between on the right side of left flange 10, outside inner ring 7 and on the left of outer ring 5, space 3 place is provided with nitrogen-sealed circle 9, nitrogen-sealed circle 9 left side seals with left flange 10 and contacts, and nitrogen-sealed circle 9 right side seals with outer ring 5 and contacts.Have the steel ball 6 being covered with a week between inner ring 7, outer ring 5, steel ball 6 diameter is 9.525 ± 0.1mm.Steel ball 6 size is set to 9.525 ± 0.1mm, makes rotation more steady, more reliably.Also comprise PLC control system and be separately positioned on the sensor on inner arm 22 and outer arm 23.The position of inner arm 22 and outer arm 23 can be monitored so in real time, when loading arm of the present invention goes wrong, device context concrete state can be understood the very first time, corresponding measure can be made at once, solve the unreasonable distribution of equipment vendors resources and the low problem of working efficiency.
Nitrogen-sealed circle 9 is arranged between left flange 10 and inner ring 7, outer ring 5, dismounting inner ring 7, outer ring 5 is not needed when therefore changing, only left flange 10 need be unclamped and can carry out replacing nitrogen-sealed circle 9, realize field stripping to change, do not need integral demounting, solve the problem that nitrogen-sealed circle 9 is installed, dismantled inconvenience.Simultaneously, due to this structure make dismounting bearing time, inner ring 7, outer ring 5 do not affect by nitrogen-sealed circle 9 elastic force, nitrogen-sealed circle 9 is very little on rotating friction force impact, avoid due to nitrogen-sealed effect and strengthen spin friction resistance, solve rotating friction force comparatively large, rotate inflexible problem, also make inner ring 7 simultaneously, that maintenance is assembled in outer ring 5 be convenient.
Left flange 10 right side place has step, and nitrogen-sealed circle 9 left side contacts with the sealing bottom surface of step, and the enclosing be positioned at outside bench floor is blocked in outside nitrogen-sealed circle 9.
The present invention increases by a step at left flange 10 place, therefore protects nitrogen-sealed circle 9, avoids freezing herein.Nitrogen-sealed circle 9 place is not easy water, thus makes can not freeze in entrucking in rainy season, also there is inner ring 7, outer ring 5 freezeout never.
Be provided with realizing active sealing circle 2 between the realizing active sealing circle groove that on the right side of inner ring 7 and right flange 1 left side is arranged, the realizing active sealing circle groove that right flange 1 left side is arranged has for stopping the seam that realizing active sealing circle 2 slides.
Add a seam at realizing active sealing circle 2 groove place, become a semi open model groove, prevent from after the LNG leaked expands, realizing active sealing circle 2 being shifted onto in runner, thus make seal failure.
As shown in Figure 2, described left flange 10 place is provided with nitrogen inlet 38, and right flange 1 is provided with corresponding nitrogen outlet 39, and certainly when actual production, the position of nitrogen inlet 38 and nitrogen outlet 39 can exchange, and the present invention adopts front a kind of set-up mode.Left flange 10, inner ring 7, left channel of nitrogen 40 is respectively arranged with in outer ring 5 and right flange 1, interior channel of nitrogen 41, outer channel of nitrogen 42 and right channel of nitrogen 43, wherein interior channel of nitrogen 41 is containing an annular housing 44 centered by swivel joint medial axis, nitrogen inlet 38, left channel of nitrogen 40, interior channel of nitrogen 41, space 3, outer channel of nitrogen 42, right channel of nitrogen 43 and nitrogen outlet 39 communicate successively, also can nitrogen outlet 39 when actual production, left channel of nitrogen 40, interior channel of nitrogen 41, space 3, outer channel of nitrogen 42, right channel of nitrogen 43 and nitrogen inlet 38 communicate successively, nitrogen inlet 38 is axially arranged with nitrogen outlet 39, nitrogen inlet 38 and nitrogen outlet 39 place are all provided with ferrule fitting 11.It is inner ring 7 length in the axial direction that annular housing 44 meets 80%M >=L >=70%M, M at inner ring 7 length L axially, and the two ends in the axial direction of annular housing 44 are equal respectively with inner ring 7 two ends spacing axially.Owing to being provided with annular housing 44, the temperature of inner ring 7 inwall and the temperature of outer wall will differ greatly, the energy of the low temperature not only in inner ring 7 is isolated simultaneously by annular housing 44 but also is taken away by the nitrogen in annular housing 44, thus the cryogenic energy reduced in inner ring 7 is delivered on outer wall greatly, the temperature difference between such inner ring 7 and outer ring 5 outer wall is little, so just can prevent that the contraction that produces greatly because the temperature difference between inner ring 7 and outer ring 5 is uneven clamps the stuck phenomenon of inner ring 7 that steel ball 6 brings and outer ring 5.
The present invention have modified nitrogen and purges route, and nitrogen inlet 38 and nitrogen outlet 39 are axially arranged, and therefore pipeline is arranged and more pressed close to LNG pipeline, makes nitrogen pipeline be in inner side all the time, is not easy to be collided, and avoids being destroyed during operation.The direction of arrow shown in Fig. 2 be nitrogen purge stream to, this flow direction also can flow backwards.
Between the left side o-ring groove that on the right side of left flange 10 and inner ring 7 left side is arranged, left side seal ring 8 is installed, between the right side o-ring groove that on the left of right flange 1 and right side, outer ring 5 is arranged, right side seal ring 16 is installed, between the main static sealing ring groove that inner ring 7 left side and left flange 10 right side are arranged, main static sealing ring 13 is installed, between the secondary seal circle groove that on the left of right flange 1 and inner ring 7 right side is arranged, secondary seal circle 4 is installed.Swivel joint in the present invention rotates more flexible, and sealability is better, maintains more convenient.
The support plate 26 on gudgeon case 19 is hinged in the middle part of described internal support case 20 comprises, the lower end of support plate 26 is hinged with lower rotary table 27, lower rotary table 27 is provided with balancing weight 45, support plate 26 upper end is connected with two inner support tube be parallel to each other 28, the other end of two inner support tube 28 is connected and the hinged top rotary table 29 in joint, is connected between top rotary table 29 and lower rotary table 27 by rope 30; One end that external support case 21 comprises the two outer support pipe be parallel to each other 31, two outer support pipes 31 is separately fixed on top rotary table 29, is connected and fixes with outer arm 23 after the other end is bending.Because the present invention is mounted on harbour; therefore often have high wind and blow to the present invention; after being provided with outer support pipe and inner support tube; owing to all having larger space between two outer support pipes and two inner support tube; so just can reduce high wind to active force of the present invention, thus greatly reduce the present invention by the possibility of blowing down.
As shown in Figure 4 and Figure 5, described support plate 26 is provided with positioning plate 32, positioning plate 32 offers positioning hole, column 17 is provided with fixed plate 33, fixed plate 33 is provided with pilot hole, fixed plate 33 is provided with T-shaped latch 34, the lower end of latch 34 is through pilot hole, match with positioning hole in the upper end of latch 34, the vertical section of latch 34 has been set in spring 35, one end of spring 35 and the horizontal segment of latch 34 offset, the upper surface of the other end and fixed plate 33 offsets, the lower end of column 17 is hinged with handle 36, be connected as shown in the figure by chain 37 or connecting rod between handle 36 and the lower end below fixed plate 33 of latch 34.After latch 34 is set, when not using of the present invention, first press handle 36 downwards, handle 36 passes through chain 37 by drop-down for latch 34, then move to above fixed plate 33 by positioning plate 32, after release handle 36, latch 34 resets under the effect of spring 35, now latch 34 upper end is just inserted in the positioning hole on positioning plate 32, thus make positioning plate 32 motionless, namely fixing inner arm 22 can not swing, and prevents high wind from blowing inner arm 22, inner arm 22 is swung, thus causes entirety of the present invention to be rocked.
Claims (2)
1.LNG loading arm peculiar to vessel, comprise the column be connected successively, be arranged on the overcurrent pipeline in column, be arranged on the gudgeon case on column, be hinged on the internal support case on gudgeon case, the external support case hinged with internal support case end, inner arm, outer arm and Pull breaking ualve, between overcurrent pipeline and inner arm, between inner arm and outer arm, be connected respectively by swivel joint between outer arm and Pull breaking ualve, the swivel joint connecting inner arm and outer arm is positioned at the hinged place of internal support case and external support case, it is characterized in that: described swivel joint comprises left flange, right flange, inner ring and outer ring, left Flange joint inner ring forms anticlockwise parts, right Flange joint outer ring forms right rotation parts, anticlockwise parts can rotate relatively with right rotation parts, on the right side of left flange, space is formed between outside inner ring and on the left of outer ring, gap is provided with nitrogen-sealed circle, nitrogen-sealed circle left side contacts with left flange seal, nitrogen-sealed circle right side seals with outer ring and contacts, the support plate on gudgeon case is hinged in the middle part of described internal support case comprises, one end of support plate is provided with balancing weight, the other end is connected with two inner support tube be parallel to each other, the other end of two inner support tube is connected and the hinged rotating disk in joint, external support case comprises two outer support pipes be parallel to each other, one end of two outer support pipes is separately fixed on rotating disk, be connected after the other end is bending and fix with outer arm, described support plate is provided with positioning plate, positioning plate offers positioning hole, column is provided with fixed plate, fixed plate is provided with pilot hole, fixed plate is provided with T-shaped latch, the lower end of latch is through pilot hole, match with positioning hole in the upper end of latch, the vertical section of latch is arranged with spring, one end of spring and the horizontal segment of latch offset, the upper surface of the other end and fixed plate offsets, the lower end of column is hinged with handle, be connected by chain or connecting rod between handle and the lower end below fixed plate of latch, described left flange right side place has step, nitrogen-sealed circle left side contacts with the sealing bottom surface of step, the enclosing be positioned at outside bench floor is blocked in outside nitrogen-sealed circle, between the realizing active sealing circle groove that on the right side of described inner ring and right flange left side is arranged, realizing active sealing circle is installed, the realizing active sealing circle groove that right flange left side is arranged has for stopping the seam that realizing active sealing circle slides, between the left side o-ring groove that on the right side of described left flange and inner ring left side is arranged, left side seal ring is installed, between the right side o-ring groove that on the left of right flange and right side, outer ring is arranged, right side seal ring is installed, between the main static sealing ring groove that inner ring left side and left flange right side are arranged, main static sealing ring is installed, between the secondary seal circle groove that on the left of right flange and inner ring right side is arranged, secondary seal circle is installed, described inner ring, there is between outer ring the steel ball being covered with a week, steel ball size is 9.525 ± 0.1mm, described left flange is provided with nitrogen inlet or nitrogen outlet, left flange, inner ring, left channel of nitrogen is respectively arranged with in outer ring and right flange, interior channel of nitrogen, outer channel of nitrogen and right channel of nitrogen, wherein interior channel of nitrogen contains an annular housing centered by swivel joint medial axis, nitrogen inlet, left channel of nitrogen, interior channel of nitrogen, space, outer channel of nitrogen, right channel of nitrogen and nitrogen outlet communicate successively, or nitrogen outlet, left channel of nitrogen, interior channel of nitrogen, space, outer channel of nitrogen, right channel of nitrogen and nitrogen inlet communicate successively, right flange is provided with corresponding nitrogen outlet or nitrogen inlet, nitrogen inlet and nitrogen outlet are axially arranged, annular housing meets 80%M >=L >=70%M at inner ring length L axially, M is inner ring length in the axial direction, the two ends in the axial direction of annular housing are equal with inner ring two ends spacing axially.
2. LNG ship loading arm according to claim 1, is characterized in that: also comprise PLC control system and be separately positioned on the sensor on inner arm and outer arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410092183.4A CN103899915B (en) | 2014-03-13 | 2014-03-13 | LNG ship loading arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410092183.4A CN103899915B (en) | 2014-03-13 | 2014-03-13 | LNG ship loading arm |
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| Publication Number | Publication Date |
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| CN103899915A CN103899915A (en) | 2014-07-02 |
| CN103899915B true CN103899915B (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410092183.4A Active CN103899915B (en) | 2014-03-13 | 2014-03-13 | LNG ship loading arm |
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| CN (1) | CN103899915B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889754B (en) * | 2016-06-02 | 2018-05-25 | 连云港远洋流体装卸设备有限公司 | Extension type bank base LNG fills arm |
| CN105858584B (en) * | 2016-06-08 | 2018-08-21 | 连云港佳普石化机械有限公司 | Low temperature single tube loading arm peculiar to vessel |
| CN106439484B (en) * | 2016-07-01 | 2019-07-12 | 韩培 | Low temperature two-tube loading arm peculiar to vessel |
| CN107790987A (en) * | 2017-11-08 | 2018-03-13 | 连云港远洋流体装卸设备有限公司 | Suitable for harbour petroleum pipeline loading arm and the automatic butt method and apparatus of ship flange |
| CN111664354B (en) * | 2020-05-09 | 2021-10-08 | 中国船舶重工集团公司第七一六研究所 | LNG heavy-calibre bank base intelligence handling system |
| CN111561659A (en) * | 2020-06-05 | 2020-08-21 | 山东冠卓重工科技有限公司 | Ultra-low temperature liquefaction wharf loading and unloading arm |
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| CN203948941U (en) * | 2014-03-13 | 2014-11-19 | 江苏长隆石化装备有限公司 | LNG handling arm peculiar to vessel |
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2014
- 2014-03-13 CN CN201410092183.4A patent/CN103899915B/en active Active
Patent Citations (7)
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| CN1458903A (en) * | 2000-09-14 | 2003-11-26 | Fmc技术股份有限公司 | Assembly with articulated arm for loading and unloading products, in particular fluid products |
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| Publication number | Publication date |
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| CN103899915A (en) | 2014-07-02 |
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