CN114183579B - Emergency disengaging device for LNG conveying and transferring system - Google Patents
Emergency disengaging device for LNG conveying and transferring system Download PDFInfo
- Publication number
- CN114183579B CN114183579B CN202111473146.4A CN202111473146A CN114183579B CN 114183579 B CN114183579 B CN 114183579B CN 202111473146 A CN202111473146 A CN 202111473146A CN 114183579 B CN114183579 B CN 114183579B
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- ball valve
- hoop
- rod
- hydraulic cylinder
- driving
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- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 15
- 230000008569 process Effects 0.000 claims abstract description 14
- 230000001360 synchronised effect Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000000926 separation method Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/08—Joints with sleeve or socket with additional locking means
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses an emergency disengaging device for an LNG conveying and transferring system, wherein a driving mechanism for closing two ball valves and opening a hoop mechanism adopts the same hydraulic cylinder, and the hydraulic cylinder adopts a retraction mode to finish synchronous closing of the two ball valves and opening of the hoop mechanism; a driving block is arranged on a hydraulic rod of the hydraulic cylinder; the upper and lower positions of one side of the driving block facing the ball valve body are respectively provided with a plane protruding structure, and the distance between the two plane protruding structures is the distance between the fixed end ball valve rod and the release end ball valve rod and is used for driving the corresponding ball valve rod driving fan to rotate in the retraction process of the hydraulic cylinder; the driving block is provided with an inclined plane protruding structure on one side which is away from the ball valve body, and the ram is extruded in the inclined plane to shear the shear screw during the retraction process of the hydraulic cylinder, so that the hoop mechanism is opened; and the distance between the inclined plane protruding structure and the plunger rod is larger than the distance between the plane protruding structure and the corresponding ball valve rod. The hydraulic rod pushing-out device avoids the obstruction of the hydraulic rod pushing-out to the disengaging process.
Description
Technical Field
The invention belongs to the field of LNG filling ships and LNG transport ship conveying equipment, and particularly relates to an emergency separation device for an LNG conveying and transferring system, which is suitable for emergency separation of other low-temperature liquids in the ship conveying process.
Background
The LNG conveying and transferring system can meet the severe requirements of low temperature and shaking working conditions, is one of key core systems of an offshore LNG industrial chain, and the emergency disengaging device is a safety protection system for rapidly separating a ship conveying system and can realize the safe disconnection of a conveying passage under emergency conditions. The emergency release device is mainly divided into a hydraulic type and a pneumatic type according to different driving modes, wherein the hydraulic type is used for opening and closing or adjusting the valve by hydraulic pressure, and the pneumatic type is mainly used for opening and closing or adjusting the valve by nitrogen pressure. Because the pneumatic device is lighter in weight, most foreign LNG conveying and transferring systems adopt pneumatic emergency disengaging devices, however, because gas has compressibility, the valve opening and closing speed of the pneumatic emergency disengaging devices is not easy to control uniformly. The hydraulic emergency release device can be divided into a ball valve type emergency release device and a butterfly valve type emergency release device according to different valve types, and because the butterfly valve type emergency release device is simple in structure and rapid in opening and closing, the foreign conveying and transferring system mainly adopts a butterfly valve, and the driving mode mainly adopts hydraulic pushing to realize release, however, the butterfly valve type emergency release device can cause larger internal liquid leakage during release due to a special action principle, so that environmental pollution and potential safety hazard are easy to form while loss is caused. The existing disengaging device adopts double-cylinder driving for the separating part of the ball valve and the anchor ear, the double-rod driving extending mode makes the driving structure and the control complex, and the pushed hydraulic rod causes obstacle to the disengaging process, so that the disengaging is inconvenient.
Disclosure of Invention
The invention aims to provide an emergency disengaging device for an LNG conveying and transferring system, which is used for avoiding the obstruction of a disengaging process caused by a hydraulic rod pushed out and reducing the number of components which are disengaged and fall along with a ball valve at a disengaging end.
The technical solution for realizing the purpose of the invention is as follows:
an emergency release device for an LNG conveying and transferring system comprises a fixed end ball valve, a release end ball valve and a hoop mechanism for connecting the fixed end ball valve and the release end ball valve; the hoop mechanism is provided with a striker rod; a shear screw is arranged between the striker rod and the hoop mechanism;
the driving mechanism for closing the two ball valves and opening the hoop mechanism adopts the same hydraulic cylinder, and the hydraulic cylinder adopts a retraction mode to finish synchronous closing of the two ball valves and opening of the hoop mechanism;
the ball valve rod driving fans are arranged on the fixed end ball valve and the separating end ball valve;
a driving block is arranged on a hydraulic rod of the hydraulic cylinder;
the upper and lower positions of one side of the driving block facing the ball valve body are respectively provided with a plane protruding structure, and the distance between the two plane protruding structures is the distance between the fixed end ball valve rod and the release end ball valve rod and is used for driving the corresponding ball valve rod driving fan to rotate in the retraction process of the hydraulic cylinder;
the driving block is provided with an inclined plane bulge structure at one side which is away from the ball valve body and is used for extruding the ram in the inclined plane to shear the shear screw along with the retraction process of the hydraulic cylinder so as to open the hoop mechanism; and the distance between the inclined plane protruding structure and the plunger rod is larger than the distance between the plane protruding structure and the corresponding ball valve rod.
Compared with the prior art, the invention has the remarkable advantages that:
the hydraulic cylinder is adopted as a power source of the driving device, the initial state of the hydraulic rod is in a complete extending state, the synchronous closing of the valve and the opening of the anchor ear are realized by adopting a single hydraulic cylinder retracting mode, the emergency separation action is completed, the leakage-free effect is achieved, the operation is simple, the hydraulic rod can drive relevant tool parts to return to the fixed end of the ball valve in the retracting process, the barrier of the pushed hydraulic rod to the separation process is avoided, and the number of the parts falling along with the separation of the ball valve at the separation end is reduced.
Drawings
Fig. 1 is a schematic view of an emergency disconnect apparatus for an LNG transfer and transfer system.
Fig. 2 is a schematic diagram of the structure of a ball valve body.
Fig. 3 is a schematic view of a hydraulic drive mechanism.
Fig. 4 is a schematic view of a hoop mechanism.
Fig. 5 is an enlarged partial schematic view of the open end of the anchor ear.
Fig. 6 is an enlarged partial schematic view of the closed end of the anchor ear.
Fig. 7 is a schematic view of the valve stem driving fan.
Detailed Description
The invention is further described with reference to the drawings and specific embodiments.
In combination with fig. 1, an emergency release device for LNG transportation and transfer systems in this embodiment is composed of a ball valve body 1, a driving mechanism 2, a hoop mechanism 3, etc., the ball valve body 1 is the basis of the device, tools such as the driving mechanism 2 and the hoop mechanism 3 are all installed on the ball valve body 1, the driving mechanism 2 adopts a hydraulic retraction driving mode, and a fixed end ball valve rod driving fan 4 and a release end ball valve rod driving fan 5 are driven to rotate synchronously in the retraction process, so as to complete the valve closing action. In the process of continuous retraction, the hoop mechanism 3 cannot be opened in a clamping state, so that the separation of the ball valve body 1 is realized, and the emergency release action is completed.
As shown in FIG. 2, the ball valve body 1 has a double ball valve structure, and can be divided into a fixed end ball valve 1-1 and a disengaging end ball valve 1-2, wherein the fixed end ball valve 1-1 is kept still after being disengaged, and the disengaging end ball valve 1-2 falls off after being disengaged. The connection part of the fixed end ball valve 1-1 and the separation end ball valve 1-2 is provided with a connection end flange 1-3, and a low-temperature sealing piece is arranged between the connection end flanges 1-3 of the fixed end ball valve 1-1 and the separation end ball valve; the fixed end ball valve 1-1 and the separating end ball valve 1-2 are respectively provided with a fixed end ball valve rod 1-4 and a separating end ball valve rod 1-5 for rotating the internal valve.
As shown in fig. 2, 3 and 7, the driving mechanism 2 is composed of a hydraulic cylinder body 2-1, a hydraulic rod 2-2, a cylinder supporting seat 2-3, a first cylinder supporting vertical plate 2-4, a second cylinder supporting vertical plate 2-5, a first reinforcing plate 2-6, a second reinforcing plate 2-7 and a driving block 2-8, wherein the first cylinder supporting vertical plate 2-4 is connected to an inner side ball valve shaft 1-6 of the fixed end ball valve 1-1 through bolts and nuts, the second cylinder supporting vertical plate 2-5 is connected to an outer side ball valve shaft 1-7 of the fixed end ball valve 1-1 through bolts and nuts, the upper part of the cylinder supporting seat 2-3 is used for supporting and fixing the hydraulic cylinder body 2-1, the lower part of the cylinder supporting vertical plate is connected with the first cylinder supporting vertical plate 2-4 and the second cylinder supporting vertical plate 2-5, and the first reinforcing plate 2-6 and the second reinforcing plate 2-7 are respectively arranged between the cylinder supporting seat 2-3 and the two cylinder supporting vertical plates, so that the reinforcing and fixing effects are achieved. The oil cylinder supporting seat 2-3 is provided with a hydraulic rod through hole, the initial state of the hydraulic rod 2-2 is a fully extended state, and retraction is realized under the action of hydraulic pressure. The driving block 2-8 is cuboid and is connected with the hydraulic rod 2-2 through threads, and the threaded connection mode has the advantages that the driving blocks 2-8 with different specifications are convenient to replace, and the connection is more reliable; the upper and lower positions of one side of the driving block 2-8, which faces the ball valve body 1, are respectively provided with a first plane bulge structure 2-81 and a second plane bulge structure 2-82, which correspond to the fixed end ball valve rod 1-4 and the release end ball valve rod 1-5 on the ball valve body 1 respectively, and the distance between the first plane bulge structure 2-81 and the second plane bulge structure 2-82 is the distance between the fixed end ball valve rod 1-4 and the release end ball valve rod 1-5, so as to realize the valve closing of the ball valve body 1; one side of the driving block 2-8, which is back to the ball valve body 1, is provided with an inclined plane bulge structure 2-83 for pushing the hoop mechanism 3 open in the retraction process, the inclined plane bulge structure 2-83 is positioned at the lower side of the driving block 2-8, and the distance between the inclined plane bulge structure 2-83 and the ram 3-9 is larger than the distance between the plane bulge structure and the corresponding ball valve rod, so that the action of pushing the hoop mechanism 3 is ensured to occur after the valve of the ball valve body 1 is closed. The valve rod driving fan 5 is provided with a square hole 5-2 and is arranged on the valve rod 1-5 (rectangular rod) of the disengaging end ball valve, the side surface of the valve rod driving fan 5 of the disengaging end ball valve is provided with a fan-shaped blade 5-1, the fan-shaped blade is contacted with a second plane protruding mechanism 2-82 on the driving block 2-8 for action, and when the hydraulic rod 2-2 is retracted, the fan-shaped blade 5-1 is stirred by the second plane protruding mechanism 2-82, so that the valve rod driving fan 5 of the disengaging end ball valve is rotated to drive the valve rod 1-5 of the disengaging end ball valve to rotate, and the valve 1-2 of the disengaging end ball valve is closed. The fixed end ball valve 1-1 and the disengaging end ball valve 1-2 are arranged according to the same structure, and the first plane bulge structure 2-81 drives the fixed end ball valve rod driving fan 4 to rotate, so that the fixed end ball valve 1-1 is closed. The fixed end ball valve rod 1-4 and the release end ball valve rod 1-5 are driven to synchronously rotate by a single cylinder body.
As shown in fig. 2, 4, 5 and 6, the hoop mechanism 3 is composed of a hoop main body, a hoop fixing plate 3-3, a left hoop connecting lug 3-4, a right hoop connecting lug 3-5, a hoop adjusting sleeve 3-6, a right pin shaft 3-7, a left pin shaft 3-8, a ram 3-9, a shearing screw 3-10, a locking nut 3-11 and a connecting pin 3-12, wherein the hoop main body is divided into a left hoop 3-1 and a right hoop 3-2, an arc groove 3-13 is formed in the inner side and used for clamping a ball valve connecting end flange 1-3, a double ball valve body 1 is tightly held, and openings are formed in two sides of the left hoop 3-1 and the right hoop 3-2 respectively. The hoop fixing plate 3-3 and the hoop connecting lugs 3-5 form a hoop closed end, the hoop adjusting sleeve 3-6, the pin shaft 3-7 and the pin shaft 3-8 are fixed on the fixed end ball valve 1-1, and the left side and the right side of the lower end are respectively sleeved on the screw rods 3-51 of the left hoop connecting lug 3-4 and the right hoop connecting lug 3-5; the left hoop connecting lug 3-4 is connected to the left hoop 3-1 through a left pin shaft 3-8, the right hoop connecting lug 3-5 and the right pin shaft 3-7 are connected to the right hoop 3-2, the left hoop connecting lug 3-4 and the right hoop connecting lug 3-5 penetrate through the inner side of the hoop fixing plate 3-3 and are opposite to each other and are respectively provided with a screw rod 3-51, the screw rods 3-51 are in threaded connection with the hoop adjusting sleeve 3-6, nuts are respectively arranged at two ends of the hoop adjusting sleeve 3-6 and are matched with the screw rods 3-51, the hoop fixing plate 3-3 is a symmetrical body symmetrical about the central axis of the hoop main body, the nuts are positioned between the hoop adjusting sleeve and the hoop fixing plate, and the space between the left hoop connecting lug 3-4, the right hoop connecting lug 3-5 and the hoop fixing plate 3-3 is adjusted through the hoop adjusting sleeve 3-6 and the nuts, so that the left hoop 3-1 and the right hoop 3-2 are symmetrical about the central axis of the hoop main body, and the left hoop 3-2 are symmetrical. The collision rod 3-9, the shear screw 3-10, the lock nut 3-11 and the connecting pin 3-12 form an anchor ear opening end, the left anchor ear 3-1 opening end is provided with a groove 3-151, and the axle center of the groove 3-151 is lower than that of the left anchor ear opening 3-15; one end of the ram 3-9 is connected with the right hoop open slot 3-14 through the connecting pin 3-12, and the other end is positioned in the groove 3-151 of the left hoop opening 3-15, and is locked and fixed by the locking nut 3-11; the groove 3-151 of the left hoop opening 3-15 is externally provided with a threaded through hole for connecting the shear screw 3-10, and is used for blocking the striker rod 3-9 and preventing the striker rod 3-9 from being separated from the groove 3-151 accidentally.
After receiving the emergency release signal, the working flow of the emergency release device is as follows: the driving mechanism 2 adopts a hydraulic cylinder 2-1 as a power source, the initial state of the hydraulic rod 2-2 is a fully extended state, when the disengagement action starts, the hydraulic rod 2-2 retracts under the action of hydraulic pressure to drive the driving block 2-8 to retract, and the first plane bulge structure 2-81 and the second plane bulge structure 2-82 on the driving block 2-8 are respectively matched with the contact of the fixed end ball valve rod 1-4 and the valve rod driving fan 5 on the disengagement end ball valve rod 1-5 to drive the fixed end ball valve rod 1-4 and the disengagement end ball valve rod 1-5 to synchronously rotate so as to realize the synchronous closing of the valve of the ball valve body 1. After the valve is closed, the hydraulic rod 2-2 continues to retract, the inclined plane bulge structure 2-83 on the driving block 2-8 contacts and extrudes the ram 3-9 at the opening end of the anchor ear, the inclined plane of the inclined plane bulge structure 2-83 enables the ram 3-9 to move outwards, the ram 3-9 is separated from the groove 3-151 of the left anchor ear opening 3-15, the hydraulic rod continues to move until the shearing screw 3-10 is sheared, the left anchor ear 3-1 and the right anchor ear 3-2 cannot be opened while maintaining the clamping state, the separation of the fixed end ball valve 1-1 and the separation end ball valve 1-2 is realized, the emergency separation action is completed, and the leakage-free effect is achieved.
Claims (5)
1. An emergency release device for an LNG conveying and transferring system comprises a fixed end ball valve, a release end ball valve and a hoop mechanism for connecting the fixed end ball valve and the release end ball valve; the hoop mechanism is provided with a striker rod; a shear screw is arranged between the striker rod and the hoop mechanism;
the method is characterized in that:
the driving mechanism for closing the two ball valves and opening the hoop mechanism adopts the same hydraulic cylinder, and the hydraulic cylinder adopts a retraction mode to finish synchronous closing of the two ball valves and opening of the hoop mechanism;
the ball valve rod driving fans are arranged on the fixed end ball valve and the separating end ball valve;
a driving block is arranged on a hydraulic rod of the hydraulic cylinder;
the upper and lower positions of one side of the driving block facing the ball valve body are respectively provided with a plane protruding structure, and the distance between the two plane protruding structures is the distance between the fixed end ball valve rod and the release end ball valve rod and is used for driving the corresponding ball valve rod driving fan to rotate in the retraction process of the hydraulic cylinder;
the driving block is provided with an inclined plane bulge structure at one side which is away from the ball valve body, and is used for extruding the ram by the inclined plane bulge structure to shear the shear screw along with the retraction process of the hydraulic cylinder, so that the hoop mechanism is opened; the distance between the inclined plane protruding structure and the collision rod is larger than the distance between the plane protruding structure and the corresponding ball valve rod;
the hoop mechanism comprises a left hoop, a right hoop, a left hoop connecting lug, a right hoop connecting lug and a hoop adjusting sleeve;
the left hoop connecting lug and the right hoop connecting lug are respectively hinged with the left hoop and the right hoop;
the anchor ear fixing plate is arranged between the left anchor ear connecting lug and the right anchor ear connecting lug, the upper end of the anchor ear fixing plate is fixed on the fixed end ball valve, and the anchor ear fixing plate is symmetrical relative to the anchor ear main body;
screw rods are arranged on the inner sides of the left hoop connecting lug and the right hoop connecting lug penetrating through the hoop fixing plate, two sides of the hoop adjusting sleeve are in threaded connection with the screw rods on the two sides, and nuts are arranged on two ends of the hoop adjusting sleeve; the nut is matched with the screw rod, is positioned between the hoop adjusting sleeve and the hoop fixing plate and is used for adjusting the symmetrical stress of the left hoop and the right hoop;
one of the hoops is provided with a groove, and the depth of the groove is lower than the depth of the opening of the hoop; the other hoop is provided with an open slot; one end of the striker rod is connected with the open slot through a connecting pin, and the other end of the striker rod is positioned in the groove and locked and fixed by a locking nut; and a shearing screw is arranged at the opening of one hoop and used for blocking the striker rod and preventing the striker rod from being separated from the groove.
2. The emergency release device for an LNG transfer and transfer system according to claim 1, wherein: the ball valve stem driving fan is provided with fan-shaped blades, and when the hydraulic rod retracts, the plane protruding mechanism toggles the fan-shaped blades.
3. The emergency release device for an LNG transfer and transfer system according to claim 1, wherein: the hydraulic cylinder is fixed on the fixed end ball valve through a hydraulic cylinder mounting seat.
4. An emergency release device for an LNG transfer and transfer system according to claim 3, wherein: the hydraulic cylinder mounting seat comprises an oil cylinder supporting seat, a first oil cylinder supporting vertical plate and a second oil cylinder supporting vertical plate;
the first oil cylinder supporting vertical plate is connected to the inner side ball valve shaft of the fixed end ball valve, and the second oil cylinder supporting vertical plate is connected to the outer side ball valve shaft of the fixed end ball valve; the upper part of the oil cylinder supporting seat is used for supporting the hydraulic cylinder, and the lower part of the oil cylinder supporting seat is connected with the first oil cylinder supporting vertical plate and the second oil cylinder supporting vertical plate.
5. The emergency release device for an LNG transfer and transfer system according to claim 4, wherein: and a reinforcing plate is arranged between the oil cylinder supporting seat and the two oil cylinder supporting vertical plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111473146.4A CN114183579B (en) | 2021-12-02 | 2021-12-02 | Emergency disengaging device for LNG conveying and transferring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111473146.4A CN114183579B (en) | 2021-12-02 | 2021-12-02 | Emergency disengaging device for LNG conveying and transferring system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114183579A CN114183579A (en) | 2022-03-15 |
| CN114183579B true CN114183579B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111473146.4A Active CN114183579B (en) | 2021-12-02 | 2021-12-02 | Emergency disengaging device for LNG conveying and transferring system |
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| Country | Link |
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| CN (1) | CN114183579B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114857349A (en) * | 2022-06-02 | 2022-08-05 | 连云港杰瑞自动化有限公司 | Release mechanism suitable for hose conveying emergency release device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698767Y (en) * | 2004-03-30 | 2005-05-11 | 孙慧英 | Emergency release device for liquid loading arm |
| KR20160036987A (en) * | 2014-09-26 | 2016-04-05 | 제일기술산업(주) | Emergency separation apparatus for fluid loading system |
| TWM577094U (en) * | 2018-12-27 | 2019-04-21 | 洪暉 | Dual-ball valve breakaway emergency device |
| CN111550629A (en) * | 2020-05-09 | 2020-08-18 | 中国船舶重工集团公司第七一六研究所 | Emergency release device suitable for ship loading and unloading arm |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3850259B1 (en) * | 2018-09-14 | 2023-12-06 | Emco Wheaton GmbH | Emergency release system and method of releasing thereof |
-
2021
- 2021-12-02 CN CN202111473146.4A patent/CN114183579B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698767Y (en) * | 2004-03-30 | 2005-05-11 | 孙慧英 | Emergency release device for liquid loading arm |
| KR20160036987A (en) * | 2014-09-26 | 2016-04-05 | 제일기술산업(주) | Emergency separation apparatus for fluid loading system |
| TWM577094U (en) * | 2018-12-27 | 2019-04-21 | 洪暉 | Dual-ball valve breakaway emergency device |
| CN111550629A (en) * | 2020-05-09 | 2020-08-18 | 中国船舶重工集团公司第七一六研究所 | Emergency release device suitable for ship loading and unloading arm |
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| CN114183579A (en) | 2022-03-15 |
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