CN114183579A - Emergency separation device for LNG (liquefied Natural gas) conveying and transferring system - Google Patents
Emergency separation device for LNG (liquefied Natural gas) conveying and transferring system Download PDFInfo
- Publication number
- CN114183579A CN114183579A CN202111473146.4A CN202111473146A CN114183579A CN 114183579 A CN114183579 A CN 114183579A CN 202111473146 A CN202111473146 A CN 202111473146A CN 114183579 A CN114183579 A CN 114183579A
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- China
- Prior art keywords
- ball valve
- hoop
- rod
- hydraulic cylinder
- end ball
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Links
- 238000000926 separation method Methods 0.000 title claims abstract description 42
- 239000003949 liquefied natural gas Substances 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000001360 synchronised effect Effects 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
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
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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
- 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
Abstract
The invention discloses an emergency separation device for an LNG (liquefied natural gas) conveying and transferring system, wherein driving mechanisms for closing two ball valves and opening an anchor ear mechanism adopt the same hydraulic cylinder, and the hydraulic cylinder completes the synchronous closing of the two ball valves and the opening of the anchor ear mechanism in a retraction mode; a hydraulic rod of the hydraulic cylinder is provided with a driving block; the upper and lower positions of one side of the driving block facing the ball valve body are respectively provided with a plane convex structure, and the distance between the two plane convex structures is the distance between the fixed end ball valve rod and the separated end ball valve rod and is used for driving the corresponding ball valve rod driving fan to rotate along with the retraction process of the hydraulic cylinder; an inclined plane bulge structure is arranged on one side of the driving block, which is back to the ball valve body, and the impact rod is extruded in the inclined plane to cut off the shear screw along with the retraction process of the hydraulic cylinder, so that the hoop mechanism is opened; and the distance between the inclined plane convex structure and the impact rod is larger than the distance between the plane convex structure and the corresponding valve rod of the ball valve. The invention avoids the obstruction of the pushed hydraulic rod to the separation 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 process of ship conveying.
Background
The LNG conveying and transferring system can meet the strict requirements of low temperature and shaking working conditions, is one of key core systems of an offshore LNG industrial chain, and the emergency separation device is a safety protection system for quickly separating a ship conveying system and can realize the safe disconnection of a conveying passage under emergency conditions. The emergency separation device is mainly divided into a hydraulic type and a pneumatic type according to different driving modes, wherein the hydraulic type is a valve opened and closed or adjusted by hydraulic pressure, and the pneumatic type is mainly opened and closed or adjusted by nitrogen pressure. Because pneumatic type device's weight is lighter, foreign LNG carries and refutes the urgent separator of pneumatic type with system most adopts, however because gas has the compressibility, the urgent separator of pneumatic type valve opening and closing speed is difficult even control. The hydraulic type emergency separation device can be divided into a ball valve type emergency separation device and a butterfly valve type emergency separation device according to different valve types, the butterfly valve type emergency separation device is simple in structure and rapid in opening and closing, foreign conveying and transferring systems mostly mainly use butterfly valves, and hydraulic pushing is mostly adopted for realizing separation in a driving mode. The existing separation device adopts double-cylinder drive for the separation part of the ball valve and the hoop, the drive structure and the control are complex due to the extension mode of the double-rod drive, and the pushed hydraulic rod causes obstacles to the separation process, so that the separation is inconvenient.
Disclosure of Invention
The invention aims to provide an emergency separation device for an LNG (liquefied natural gas) conveying and transferring system, which is used for avoiding the obstruction of a pushed hydraulic rod to a separation process and reducing the number of components falling along with the separation of a separation end ball valve.
The technical solution for realizing the purpose of the invention is as follows:
an emergency release device for an LNG (liquefied Natural gas) 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 bumper bar; a shearing screw is arranged between the impact rod and the hoop mechanism;
the driving mechanisms for closing the two ball valves and opening the hoop mechanism adopt the same hydraulic cylinder, and the hydraulic cylinder completes the synchronous closing of the two ball valves and the opening of the hoop mechanism in a retraction mode;
ball valve rod driving fans are arranged on the fixed end ball valve and the separation end ball valve;
a hydraulic rod of the hydraulic cylinder is provided with a driving block;
the upper and lower positions of one side of the driving block facing the ball valve body are respectively provided with a plane convex structure, the distance between the two plane convex structures is the distance between the fixed end ball valve rod and the separated end ball valve rod, and the plane convex structures are used for driving the corresponding ball valve rod driving fan to rotate along with the retraction process of the hydraulic cylinder;
an inclined plane bulge structure is arranged on one side, back to the ball valve body, of the driving block and is used for extruding the impact rod in the inclined plane along with the retraction process of the hydraulic cylinder to shear the shear screw, so that the hoop mechanism is opened; and the distance between the inclined plane convex structure and the impact rod is larger than the distance between the plane convex structure and the corresponding valve rod of the ball valve.
Compared with the prior art, the invention has the following remarkable advantages:
the hydraulic cylinder is used as a power source of the driving device, the hydraulic rod is in a completely extending state in an initial state, synchronous closing of the valve and opening of the hoop are achieved in a single hydraulic cylinder retracting mode, emergency separation action is completed, the leakage-free effect is achieved, and operation and control are simple. The hydraulic rod can drive related tool parts to return to the fixed end of the ball valve in the retraction process, so that the problem that the pushed hydraulic rod causes the separation process is avoided, and the number of the parts separated from and falling off along with the separated ball valve is reduced.
Drawings
Fig. 1 is a schematic diagram of an emergency disconnect device for an LNG transfer and refuge system.
Fig. 2 is a schematic structural diagram of a ball valve body.
Fig. 3 is a schematic view of the hydraulic drive mechanism.
Fig. 4 is a schematic view of the hoop mechanism.
Fig. 5 is a partially enlarged schematic view of the opening end of the hoop.
Fig. 6 is a partially enlarged schematic view of the closed end of the hoop.
Fig. 7 is a schematic view of a valve stem drive fan configuration.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
With reference to fig. 1, the LNG transportation and refute system of this embodiment uses emergency separation device, by ball valve body 1, actuating mechanism 2, staple bolt mechanism 3 etc. constitute, ball valve body 1 is the basis of device, frock such as actuating mechanism 2 and staple bolt mechanism 3 are all installed on ball valve body 1, actuating mechanism 2 adopts hydraulic pressure to contract back the drive mode, contract in-process and drive stiff end ball valve rod drive fan 4 and break away from end ball valve rod drive fan 5 synchronous rotation, accomplish the valve and close the action. In the process of continuing retracting, the hoop mechanism 3 can not be opened in a clamping state, so that the separation of the ball valve body 1 is realized, and the emergency separation action is completed.
As shown in fig. 2, the ball valve body 1 is a double-ball valve structure, and can be divided into a fixed end ball valve 1-1 and a separated end ball valve 1-2, the fixed end ball valve 1-1 is kept stationary after being separated, and the separated end ball valve 1-2 falls after being separated. A connecting end flange 1-3 is arranged at the joint of the fixed end ball valve 1-1 and the separating end ball valve 1-2, and a low-temperature sealing element is arranged between the connecting end flanges 1-3 of the fixed end ball valve and the separating end ball valve; the fixed end ball valve 1-1 and the separation end ball valve 1-2 are respectively provided with a fixed end ball valve rod 1-4 and a separation end ball valve rod 1-5 which are used for rotating the internal valve.
As shown in fig. 2, 3 and 7, the driving mechanism 2 comprises a hydraulic cylinder body 2-1, a hydraulic rod 2-2, a cylinder support base 2-3, a first cylinder support upright plate 2-4, a second cylinder support upright plate 2-54, a first reinforcing plate 2-6, a second reinforcing plate 2-7 and a driving block 2-8, wherein the first cylinder support upright plate 2-4 is connected to an inner side ball valve rod shaft 1-6 of the fixed end ball valve 1-1 through bolts and nuts, the second cylinder support upright plate 2-54 is connected to an outer side ball valve rod shaft 1-7 of the fixed end ball valve 1-1 through bolts and nuts, the upper part of the cylinder support base 2-3 supports and fixes the hydraulic cylinder body 2-1, and the lower part thereof is connected with the first cylinder support upright plate 2-4 and the second cylinder support upright plate 2-54, and a first reinforcing plate 2-6 and a second reinforcing plate 2-7 are respectively arranged between the oil cylinder supporting seat 2-3 and the two oil cylinder supporting vertical plates to play a role in reinforcing and fixing. The oil cylinder supporting seat 2-3 is provided with a hydraulic rod through hole, the hydraulic rod 2-2 is in a completely extended state in an initial state, and retraction is realized under the action of hydraulic pressure. The driving blocks 2-8 are cuboids and are connected with the hydraulic rods 2-2 through threads, and the threaded connection mode has the advantages that the driving blocks 2-8 with different specifications can be conveniently replaced, and the connection is more reliable; the driving block 2-8 is provided with a first plane convex structure 2-81 and a second plane convex structure 2-82 at the upper and lower positions facing one side of the ball valve body 1 respectively, the first plane convex structure 2-81 and the second plane convex structure 2-82 correspond to a fixed end ball valve rod 1-4 and a separation end ball valve rod 1-5 on the ball valve body 1 respectively, and the distance between the first plane convex structure 2-81 and the second plane convex structure 2-82 is the distance between the fixed end ball valve rod 1-4 and the separation end ball valve rod 1-5, so that the valve of the ball valve body 1 is closed; one side of the driving block 2-8, which is back to the ball valve body 1, is provided with an inclined plane convex structure 2-83 for jacking the hoop mechanism 3 in the retraction process, the inclined plane convex structure 2-83 is positioned at the lower side of the driving block 2-8, and the distance between the inclined plane convex structure 2-83 and the impact bar 3-9 is larger than the distance between the plane convex structure and the corresponding ball valve rod, so that the action of jacking 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 installed on a valve rod 1-5 (a rectangular rod) of the separation end ball valve, a fan-shaped blade 5-1 is arranged on the side face of the valve rod driving fan 5 of the separation end ball valve and is in contact action with a second plane protrusion mechanism 2-82 on a driving block 2-8, when the hydraulic rod 2-2 retracts, the second plane protrusion mechanism 2-82 stirs the fan-shaped blade 5-1, so that the valve rod driving fan 5 of the separation end ball valve rotates to drive the valve rod 1-5 of the separation end ball valve to rotate, and the separation end ball valve 1-2 is closed. The fixed end ball valve 1-1 and the separation 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 single cylinder body drives the fixed end ball valve rod 1-4 and the separated end ball valve rod 1-5 to synchronously rotate.
As shown in fig. 2, 4, 5 and 6, the hoop mechanism 3 comprises a hoop main body, a hoop fixing plate 3-3, a left hoop engaging lug 3-4, a right hoop engaging lug 3-5, a hoop adjusting sleeve 3-6, a right pin 3-7, a left pin 3-8, a striker 3-9, a shear screw 3-10, a lock 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, the inner side of the hoop main body is provided with an arc-shaped groove 3-13 for clamping a ball valve connecting end flange 1-3, and the two sides of the left hoop 3-1 and the right hoop 3-2 are respectively provided with an opening. The hoop fixing plate 3-3, the hoop connecting lugs 3-5, the hoop adjusting sleeve 3-6, the pin shaft 3-7 and the pin shaft 3-8 form a hoop closed end, the upper end of the hoop fixing plate 3-3 is fixed on the fixed end ball valve 1-1, and the left side and the right side of the lower end of the hoop fixing plate 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; a left hoop connecting lug 3-4 is connected on a left hoop 3-1 through a left pin shaft 3-8, a right hoop connecting lug 3-5 and a right pin shaft 3-7 are connected on a right hoop 3-2, the left hoop connecting lug 3-4 and the right hoop connecting lug 3-5 are respectively provided with a screw rod 3-51 which is opposite to the inner side of a hoop fixing plate 3-3 in a penetrating way, the screw rods 3-51 are connected with a hoop adjusting sleeve 3-6 in a threaded way, two ends of the hoop adjusting sleeve 3-6 are respectively provided with a nut, the nuts are matched with the screw rods 3-51, the hoop fixing plate 3-3 is a symmetrical body which is symmetrical about the central shaft of a hoop main body, the nuts are positioned between the hoop adjusting sleeve and the hoop fixing plate, the distance 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 symmetrical stress of the left hoop 3-1 and the right hoop 3-2 is realized. The collision rod 3-9, the shearing screw 3-10, the lock nut 3-11 and the connecting pin 3-12 form an opening end of the hoop, the opening end of the left hoop 3-1 is provided with a groove 3-151, and the axis of the groove 3-151 is lower than the axis of the opening 3-15 of the left hoop; one end of the striking rod 3-9 is connected with the right hoop opening groove 3-14 through the connecting pin 3-12, the other end is positioned in the groove 3-151 of the left hoop opening 3-15, and locking and fixing are carried out by using a locking nut 3-11; and a threaded through hole is arranged outside the groove 3-151 of the opening 3-15 of the left hoop and is used for connecting a shearing screw 3-10 and blocking the collision bar 3-9 to prevent the collision bar 3-9 from being accidentally separated from the groove 3-151.
After receiving the emergency release signal, the working process of the emergency release device is as follows: the driving mechanism 2 adopts a hydraulic cylinder 2-1 as a power source, the hydraulic rod 2-2 is in a completely extending state in an initial state, when the separation 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 fixed end ball valve rod 1-4 and the separation end ball valve rod 1-5 are driven to synchronously rotate through the contact and matching of the first plane convex structure 2-81 and the second plane convex structure 2-82 on the driving block 2-8 with the fixed end ball valve rod 1-4 and the valve rod driving fan 5 on the separation end ball valve rod 1-5 respectively, so that the synchronous closing of the valve of the ball valve body 1 is realized. After the valve is closed, the hydraulic rod 2-2 continuously retracts, the inclined plane convex structure 2-83 on the driving block 2-8 contacts and extrudes the impact rod 3-9 at the opening end of the hoop, the inclined plane of the inclined plane convex structure 2-83 enables the impact rod 3-9 to move outwards, the impact rod 3-9 is separated from the groove 3-151 of the opening 3-15 of the left hoop, the movement is continued until the shearing screw 3-10 is cut off, the left hoop 3-1 and the right hoop 3-2 cannot maintain the tightening state and are opened, the fixed end ball valve 1-1 and the separated end ball valve 1-2 are separated, the emergency separation action is completed, and the leakage-free effect is achieved.
Claims (7)
1. An emergency release device for an LNG (liquefied Natural gas) 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 bumper bar; a shearing screw is arranged between the impact rod and the hoop mechanism;
the method is characterized in that:
the driving mechanisms for closing the two ball valves and opening the hoop mechanism adopt the same hydraulic cylinder, and the hydraulic cylinder completes the synchronous closing of the two ball valves and the opening of the hoop mechanism in a retraction mode;
ball valve rod driving fans are arranged on the fixed end ball valve and the separation end ball valve;
a hydraulic rod of the hydraulic cylinder is provided with a driving block;
the upper and lower positions of one side of the driving block facing the ball valve body are respectively provided with a plane convex structure, the distance between the two plane convex structures is the distance between the fixed end ball valve rod and the separated end ball valve rod, and the plane convex structures are used for driving the corresponding ball valve rod driving fan to rotate along with the retraction process of the hydraulic cylinder;
an inclined plane bulge structure is arranged on one side, back to the ball valve body, of the driving block and is used for extruding the impact rod in the inclined plane along with the retraction process of the hydraulic cylinder to shear the shear screw, so that the hoop mechanism is opened; and the distance between the inclined plane convex structure and the impact rod is larger than the distance between the plane convex structure and the corresponding valve rod of the ball valve.
2. The emergency disconnect device for an LNG transfer and refuelling system according to claim 1, characterized in that: the ball valve rod driving fan is provided with a fan-shaped blade, and when the hydraulic rod retracts, the fan-shaped blade is stirred by the plane protrusion mechanism, so that the ball valve rod driving fan rotates to drive the ball valve rod to rotate, and the fixed end ball valve and the ball valve are closed.
3. The emergency disconnect device for an LNG transfer and refuelling system according to claim 1, characterized in that: 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 hinged with the left hoop and the right hoop respectively;
the hoop fixing plate is arranged between the left hoop connecting lug and the right hoop connecting lug, and the upper end of the hoop fixing plate is fixed on the fixed end ball valve and is symmetrical about the hoop main body;
the left hoop connecting lug and the right hoop connecting lug are respectively provided with a screw rod penetrating through the inner side of the hoop fixing plate, two hoop adjusting sleeves are in threaded connection with the screw rods on the two sides, and two ends of each hoop adjusting sleeve are respectively provided with a nut; 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.
4. The emergency disconnect device for an LNG transfer and refuting system of claim 3, wherein: one hoop is provided with a groove, and the depth of the groove is lower than the depth of an opening of the hoop; the other hoop is provided with an open slot; one end of the striker is connected with the open slot through the connecting pin, and the other end of the striker is positioned in the groove and is locked and fixed by using a locking nut; one of the anchor ear openings is provided with a shearing screw for blocking the impact bar and preventing the impact bar from being separated from the groove.
5. The emergency disconnect device for an LNG transfer and refuelling system according to claim 1, characterized in that: the hydraulic cylinder is fixed on the fixed end ball valve through a hydraulic cylinder mounting seat.
6. The emergency disconnect device for an LNG transfer and refuting system of claim 5, wherein: the hydraulic cylinder mounting base comprises a hydraulic cylinder supporting base, a first hydraulic cylinder supporting vertical plate and a second hydraulic cylinder supporting vertical plate;
the first oil cylinder supporting vertical plate is connected to an inner side ball valve rod shaft of the fixed end ball valve, the second oil cylinder supporting vertical plate is connected to an outer side ball valve rod shaft of the fixed end ball valve, the upper portion of the oil cylinder supporting seat is used for supporting the hydraulic cylinder, and the lower portion of the oil cylinder supporting seat is connected with the first oil cylinder supporting vertical plate and the second oil cylinder supporting vertical plate.
7. The emergency disconnect device for an LNG transfer and refuting system of claim 6, 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 true CN114183579A (en) | 2022-03-15 |
| CN114183579B 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) |
Cited By (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 (5)
| 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 |
| US20210199228A1 (en) * | 2018-09-14 | 2021-07-01 | Emco Wheaton Gmbh | Dual control emergency release system |
-
2021
- 2021-12-02 CN CN202111473146.4A patent/CN114183579B/en active Active
Patent Citations (5)
| 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 |
| US20210199228A1 (en) * | 2018-09-14 | 2021-07-01 | Emco Wheaton Gmbh | Dual control emergency release 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 |
Cited By (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 |
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| CN114183579B (en) | 2024-02-13 |
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