CN113074287A - Novel shuttle tanker stern receive hydraulic fluid port emergency trip device - Google Patents
Novel shuttle tanker stern receive hydraulic fluid port emergency trip device Download PDFInfo
- Publication number
- CN113074287A CN113074287A CN202010012397.1A CN202010012397A CN113074287A CN 113074287 A CN113074287 A CN 113074287A CN 202010012397 A CN202010012397 A CN 202010012397A CN 113074287 A CN113074287 A CN 113074287A
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- Prior art keywords
- ring
- female joint
- oil
- clamping
- joint
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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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/28—Couplings of the quick-acting type with fluid cut-off means
- F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
- F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
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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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/40—Safety valves; Equalising valves, e.g. pressure relief valves with a fracturing member, e.g. fracturing diaphragm, glass, fusible joint
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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
- F16L37/00—Couplings of the quick-acting type
- F16L37/62—Couplings of the quick-acting type pneumatically or hydraulically actuated
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The field belongs to the field of ocean oil and gas outward transportation, and relates to a novel shuttle tanker stern oil receiving port emergency disconnecting device, which can realize two disconnecting modes of quick connection of an oil pipeline and active disconnection and passive disconnection under emergency, and ensure the safety of oil and gas outward transportation operation. The device adopts a connection mode that the clamping jaws are uniformly distributed, realizes the releasing and clamping functions of the clamping jaws through the combined action of hydraulic oil pressure in the driving mechanism and a female joint return spring, and the clamping mechanism is designed with a self-locking structure; the claw is designed into a head part and a tail part, and can be separated through a pin which is sheared to be broken in an emergency; the female joint sealing spring is arranged on the outer side of the female joint sealing ring, and a sealing ring is designed between the limiting ring and the female joint sealing ring, so that a medium can be effectively isolated, and the corrosion of the medium to the internal structure of the device is avoided. Compared with the existing device, the device has the biggest characteristics of passive separation mode and more reliable connection clamping.
Description
Technical Field
The invention belongs to the field of marine oil and gas outward transportation, and particularly relates to a novel emergency release device for oil transportation pipelines to be quickly connected and emergently released and simultaneously bidirectionally close an oil passage, which can greatly improve the efficiency and the safety of oil receiving of shuttle tankers on the sea.
Background
With the development of oil and gas resource exploitation in the sea field, the safety of offshore oil and gas field exploitation receives more and more attention, wherein offshore crude oil export is an important link. The emergency release device is an important component in an offshore oil and gas outward transmission system, can improve the efficiency of oil and gas outward transmission operation, can realize emergency release under dangerous working conditions, and improves the safety of oil transmission operation. However, the research on marine oil equipment in China is late compared with that in foreign countries, the technology is immature, and although many achievements are made on the research on the wharf oil transportation arm emergency release device in China, the research on the marine oil and gas output emergency release device is less.
The working principle of the currently common emergency release device is as follows: when crude oil is transported out, a male joint fixed at the end part of an oil transportation hose is butted with a female joint fixed at an oil receiving port at the stern part of a shuttle tanker through the traction of a guide cable, and an internal oil transportation channel is opened; when an emergency occurs, the male joint and the female joint are disconnected, the oil way is cut off by the male joint shut-off valve and the female joint shut-off valve, and the medium is reserved inside the pipeline, so that leakage is prevented, and the safety of output operation, equipment and workers is guaranteed.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a novel circumferential clamping jaw type emergency release device, which realizes connection tightening and release of the device through opening and closing of the circumferential clamping jaws in the radial direction. When the device is in a state to be connected, the clamping jaws are in an open state, the clamping jaws which are circumferentially arranged and are in the open state provide a guiding effect for the butt joint of the male connector, and after the butt joint is completed, the driving mechanism drives the clamping jaws to move to complete the tightening work; when emergency disconnection is needed, the driving mechanism moves reversely, and the clamping jaws are opened to release the tightening effect; when the driving mechanism fails in an emergency state, the alternative scheme is started, the head part and the tail part of the clamping jaw are separated under the action of force, the joint is separated in an emergency, and the reliability of the emergency separation of the device is greatly improved.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a novel urgent throw-off of zhou bu pawl formula device, under emergency, can effectually realize throw-off, has ensured the safety of crude oil defeated operation outward, its characterized in that: the device comprises a clamping mechanism, a driving mechanism, a male joint turn-off mechanism, a female joint turn-off mechanism and the like.
The clamping mechanism consists of a clamping jaw push ring, clamping jaws and a clamping ring, wherein 12 clamping jaws are uniformly distributed in the circumferential direction and are divided into a head part, a tail part and a breaking pin; the head and the tail of the clamping jaw are provided with pin holes, and the clamping jaw is fixed by two broken pins; the claw push ring is internally provided with a guide groove circumferential positioning claw, and the outer part of the claw push ring is provided with a guide boss which is matched with an outer sleeve of the device to realize circumferential positioning of the clamping mechanism; the compression surface outside the clamping jaw and the pressure applying surface inside the clamping jaw push ring are designed with self-locking angles.
The driving mechanism consists of a hydraulic thrust ring, a female joint return spring, an outer sleeve, a sealing ring, a clamping ring and a base; an oil inlet and an oil outlet are formed in the outer sleeve and are fixed on the base through 12 uniformly distributed bolts; the sealing rings are arranged on the shoulder part and the tail part of the driving ring; the return spring is arranged in a cavity formed by the clamping ring and the driving ring.
The male connector oil way shutoff mechanism consists of a male connector shutoff valve, a male connector support ring, a male connector upper valve body, a male connector lower valve body, a male connector sealing spring and a guide plate; the male joint support ring is fixed on the lower valve body of the male joint through threads; the upper valve body and the lower valve body of the male connector are connected through bolts, and 12 valves are uniformly distributed; the male joint sealing spring is sleeved on the cylindrical part of the male joint shutoff valve; the male joint shutoff valve is arranged in a central hole of a male joint support ring, and axial movement can be realized by compressing a male joint sealing spring; the guide plate is welded on the head shut-off part of the male joint shut-off valve.
The female joint shutoff mechanism comprises a female joint shutoff valve, a female joint sealing ring, a female joint support ring, a female joint sealing spring, a locking spring, a limiting ring and the like; the female joint support ring is fixed by the extrusion of the base and the boss at the inner edge of the limit ring, and the bottom of the threaded hole is provided with a locking spring; the female joint shutoff valve is fixed on the female joint support ring through threads, and the anti-loosening function is realized through the compression of a lock spring; the guide plate is welded on the head shut-off part of the shut-off valve of the female joint; the female joint sealing spring is arranged in a cavity formed by the limiting ring and the female joint sealing ring.
The invention has the following beneficial effects: compared with the existing emergency release device, the peripheral distributed clamping jaw type enables the tightening force to be distributed more uniformly, not only can the tightening connection of the two parts of the device be realized, but also a guiding effect can be provided for the butt joint of the male joint and the female joint when the clamping jaws are in an open state; in an emergency state, when the driving mechanism fails and cannot work, the driven separation can be realized by breaking the pin nail of the jack catch; the semi-gyro structure formed by welding the guide plate of the shutoff valve realizes the flow guide and reduces the weight of parts to a certain extent.
Drawings
Fig. 1 is a full section view of the emergency disconnect;
FIG. 2 is a device docking guide;
FIG. 3 is a view showing a jaw arrangement;
FIG. 4 is a schematic view of the jaw assembly;
FIG. 5 is a schematic view of a jaw push ring;
FIG. 6 is a schematic view of a driving scheme;
FIG. 7 is an enlarged view of the clamping state;
FIG. 8 is a partial assembly view of the drive mechanism;
in the figure: 1. the sealing device comprises a limiting ring, 2, a sealing ring, 3, a female joint sealing spring, 4, a female joint return spring, 5, a clamping ring, 6, a hydraulic thrust ring, 7, an outer sleeve, 8, a jaw pushing ring, 9, a jaw, 10, a male joint upper part, 11, a male joint lower part, 12, a male joint support ring, 13, a male joint sealing spring, 14, a guide plate, 15, a male joint shutoff valve, 16 female joint shutoff valves, 17, a female joint support ring, 18, a sealing ring, 19, a locking spring, 20, a base 21, a bolt, 22, a male joint connecting bolt, 23, a connecting block, 91, a jaw head, 92, an actuating pin, 93, a jaw tail, 94, an interference preventing groove, 111 and an ear plate.
Detailed Description
The emergency release device comprises 23 parts in normal operation: 1. the sealing device comprises a limiting ring, 2, a female joint sealing ring, 3, a female joint sealing spring, 4, a female joint return spring, 5, a clamping ring, 6, a hydraulic thrust ring, 7, an outer sleeve, 8, a jaw pushing ring, 9, a jaw, 10, a male joint upper portion, 11, a male joint lower portion, 12, a male joint support ring, 13, a male joint sealing spring, 14, a guide plate, 15, a male joint shutoff valve, 16 female joint shutoff valves, 17, a female joint support ring, 18, a sealing ring, 19, a locking spring, 20, a base, 21, a bolt, 22, a male joint connecting bolt, 23 and a connecting block.
As shown in figure 1, the whole emergency release device is of a columnar structure, a female joint limiting ring 1 is connected with a base 20 through threads, a female joint supporting ring 17 is fixed with the base 20 through the extrusion of the female joint limiting ring 1, a clamping ring 5 is connected with the female joint limiting ring 1 through threads, an outer sleeve 7 is connected with the base 20 through a bolt 21, a female joint shutoff valve 16 is connected with the female joint supporting ring 17 through threads, a locking spring is arranged at the position, which is not provided with the threads, at the upper part of a thread matching hole of the female joint supporting ring 17, the connection loosening condition is effectively prevented, a sealing ring 18 is arranged on the limiting ring 1, the medium is effectively prevented from flowing to the inner part of the device, a female joint sealing spring 3 is arranged in a cavity formed by the female joint sealing ring 2 and the limiting ring 1, the axial movement of the female joint sealing ring 2 can be realized through the compression and the resetting of the female joint sealing spring 3, a female, the axial movement of the hydraulic thrust ring 6 can be realized through the compression and the reset of the female joint return spring 4, the male joint support ring 12 is connected with the lower part 11 of the male joint through threads, the male joint sealing spring 13 is sleeved on the lower part of the male joint shut-off valve 15, and the guide plate 14 is fixed on the male joint shut-off valve 15 through welding.
As shown in fig. 2, when the emergency release device is in the connection state of the male and female connectors, the return spring 4 is in the original state of pre-compression, the jaws 9 are in the open state to provide guidance for the movement of the male connector in butt joint, and two lug plates 111 are symmetrically designed on the outer side of the lower part 11 of the male connector.
As shown in fig. 3, the claws 9 are designed with interference-proof grooves, the claws 9 are uniformly arranged in the circumferential direction, the number of the claws 9 is 12, and the male connector upper part 10 and the male connector lower part 11 are connected by male connector connecting bolts 22 and uniformly distributed in the circumferential direction.
As shown in figure 4, the claw consists of a claw head part 91, a claw tail part 93 and a breaking pin 92, the claw head part 91 and the claw tail part 93 are fixed together through the breaking pin 92, and the breaking pin 92 can be sheared under the action of external force, so that the male joint and the female joint of the emergency release device can be passively separated.
As shown in fig. 5, 3 uniformly distributed guide bosses are arranged in the circumferential direction of the outer side of the jaw push ring 8 to prevent circumferential rotation and 12 uniformly distributed connecting grooves, and 12 uniformly distributed jaw guide grooves are formed in the inner side of the jaw push ring 8 to limit circumferential rotation of the jaw 9.
As shown in fig. 6, the driving structure is powered by hydraulic oil and the female joint return spring 4, oil inlet and outlet ports 71 are symmetrically formed in the outer side of the outer sleeve 7, when oil is fed and pressurized, the female joint return spring 4 is compressed, the hydraulic thrust ring 6 drives the jaw push ring 8 to move axially downwards, the jaws 9 are pressed downwards, and connection tightening is achieved; during pressure relief, the female joint return spring 4 is reset to drive the hydraulic thrust ring 6 and the jaw thrust ring 8 to move axially upwards, and the jaws 9 are lifted to realize disengagement.
As shown in fig. 7, the clamping contact surface of the clamping jaw 9 and the clamping jaw push ring 8 is designed with a certain angle, so that the clamping jaw has a certain self-locking function, when the hydraulic pressure has small fluctuation, the clamping reliability is ensured, and the contact surface of the clamping jaw 9 is designed with a square interference groove to prevent the generation of motion interference.
As shown in fig. 8, the jaw push ring 8 is connected with the hydraulic thrust ring 6 through a connecting block 23 in a clearance fit manner, so that the assembly and disassembly are convenient.
The mode of operation of the invention is as follows:
(1) when the emergency release device is in butt joint, the guide cable drives the male joint to move upwards under the driving of the winch, the claw is in an open state at the moment, the male joint is guided to be in butt joint correctly, the sealing springs of the male joint and the female joint are compressed from the beginning to the end of the butt joint, the flow channel is opened, and no medium is conveyed at the moment.
(2) And after the butt joint is completed, the hydraulic device is loaded to drive the clamping jaws to press down, so that the male and female connectors are tightened, then nitrogen is blown, and the medium is conveyed.
(3) After the medium is conveyed, nitrogen purging is performed again, the hydraulic device is unloaded, the female joint return spring drives the hydraulic thrust ring and the jaw thrust ring to axially move, the jaws are opened to disconnect the male joint and the female joint, and the valve is closed.
(4) If the emergency state occurs, the hydraulic device is unloaded, the reset spring drives the hydraulic thrust ring and the jaw thrust ring to move, and the male and female joint shut-off valves are closed while the jaws are opened, so that the leakage of a medium is prevented; if the active separation scheme fails, under the action of force, the breaking pin of the clamping jaw is cut off, and the closing valve is closed at the same time, so that the emergency separation is realized.
Claims (7)
1. The utility model provides a novel shuttle tanker stern receives hydraulic fluid port emergency release device, can realize the high-speed joint of normal during operation and in emergency's initiative under throw off with throw off passively, guarantee the safety of marine oil transportation operation and go on, its characterized in that, this device comprises chucking mechanism, actuating mechanism, joint shutoff mechanism etc..
2. The shuttle tanker stern oil receiver emergency release device of claim 1, wherein: the clamping mechanism comprises jack catch push ring, jack catch, chucking ring, and the chucking mode is 12 jack catches of chucking ring chucking boss circumference evenly distributed, and the inside guide way circumference location jack catch of seting up of jack catch push ring.
3. The shuttle tanker stern oil receiver emergency release device of claim 1, wherein: the driving mechanism consists of a driving ring, a female joint return spring, an outer sleeve, a sealing ring, a clamping ring and a base, wherein an oil inlet and an oil outlet are formed in the outer sleeve, the outer sleeve and the hydraulic thrust ring form a hydraulic oil cavity, and the driving mode is that hydraulic oil enters and exits and the female joint return spring is compressed and reset to generate driving action.
4. The shuttle tanker stern oil receiver emergency release device of claim 1, wherein: the joint shutoff mechanism female joint support ring is fixed with the extrusion of spacing ring through the base, and the shutoff valve is installed the guide plate, through welded fastening.
5. The shuttle tanker stern oil receiver emergency disconnect device of claim 1 or 2, wherein: the claw consists of a head part, a tail part and breaking pins, and the head part and the tail part of the claw are connected through the two breaking pins.
6. The shuttle tanker stern oil receiver emergency disconnect device of claim 1 or 4, wherein: the female joint clamping spring is arranged on a female joint sealing ring, and the female joint sealing ring and the limiting ring are sealed through a sealing ring.
7. The shuttle tanker stern oil receiver emergency disconnect device of claim 1 or 2, wherein: the outer side pressure receiving surface of the clamping jaw and the inner side pressure applying surface of the clamping jaw push ring are designed with self-locking angles, so that the male joint and the female joint are reliably tightened when pressure fluctuates slightly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012397.1A CN113074287A (en) | 2020-01-06 | 2020-01-06 | Novel shuttle tanker stern receive hydraulic fluid port emergency trip device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010012397.1A CN113074287A (en) | 2020-01-06 | 2020-01-06 | Novel shuttle tanker stern receive hydraulic fluid port emergency trip device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113074287A true CN113074287A (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010012397.1A Pending CN113074287A (en) | 2020-01-06 | 2020-01-06 | Novel shuttle tanker stern receive hydraulic fluid port emergency trip device |
Country Status (1)
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| CN (1) | CN113074287A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235265A (en) * | 2022-02-23 | 2022-03-25 | 东营鼎洪石油技术开发有限公司 | Oil field is with oil pressure seat that can install manometer fast |
| CN115949789A (en) * | 2023-03-15 | 2023-04-11 | 四川凯德源科技有限公司 | A break valve for LNG adds mechanism of qi |
| CN116817058A (en) * | 2023-06-13 | 2023-09-29 | 广东泰恩流体控制设备有限公司 | Pipeline connector |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201014112Y (en) * | 2007-02-16 | 2008-01-30 | 连云港远洋流体装卸设备有限公司 | Rapid dry break connecting mechanism |
| CN102434680A (en) * | 2010-09-29 | 2012-05-02 | 刘虎 | Quick disconnection valve |
| CN102444758A (en) * | 2010-10-08 | 2012-05-09 | 施托布利法韦日公司 | Connecting device with locking by threaded claws and coupling comprising such a device |
| CN105953009A (en) * | 2016-06-24 | 2016-09-21 | 中航光电科技股份有限公司 | Male connector, female connector and fast connector assembly |
| CN206754664U (en) * | 2017-04-10 | 2017-12-15 | 烟台杰瑞石油装备技术有限公司 | Quick release device |
| CN109196262A (en) * | 2016-05-24 | 2019-01-11 | 日东工器株式会社 | The pipe fitting being made of negative joint component and male form joint member |
| CN109915678A (en) * | 2019-04-12 | 2019-06-21 | 雷泽奇 | A kind of ventilating joint of Quick-clamped screw thread gas nozzle |
| CN110336242A (en) * | 2019-06-27 | 2019-10-15 | 宝鸡石油机械有限责任公司 | Jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform |
| CN110537049A (en) * | 2017-06-13 | 2019-12-03 | 梅塞尔法国股份公司 | Connector for low-temperature liquefaction medium |
| CN113864493A (en) * | 2021-10-22 | 2021-12-31 | 中原工学院 | Quick-connection type one-way grout-stopping fracture valve device and using method thereof |
-
2020
- 2020-01-06 CN CN202010012397.1A patent/CN113074287A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201014112Y (en) * | 2007-02-16 | 2008-01-30 | 连云港远洋流体装卸设备有限公司 | Rapid dry break connecting mechanism |
| CN102434680A (en) * | 2010-09-29 | 2012-05-02 | 刘虎 | Quick disconnection valve |
| CN102444758A (en) * | 2010-10-08 | 2012-05-09 | 施托布利法韦日公司 | Connecting device with locking by threaded claws and coupling comprising such a device |
| CN109196262A (en) * | 2016-05-24 | 2019-01-11 | 日东工器株式会社 | The pipe fitting being made of negative joint component and male form joint member |
| CN105953009A (en) * | 2016-06-24 | 2016-09-21 | 中航光电科技股份有限公司 | Male connector, female connector and fast connector assembly |
| CN206754664U (en) * | 2017-04-10 | 2017-12-15 | 烟台杰瑞石油装备技术有限公司 | Quick release device |
| CN110537049A (en) * | 2017-06-13 | 2019-12-03 | 梅塞尔法国股份公司 | Connector for low-temperature liquefaction medium |
| CN109915678A (en) * | 2019-04-12 | 2019-06-21 | 雷泽奇 | A kind of ventilating joint of Quick-clamped screw thread gas nozzle |
| CN110336242A (en) * | 2019-06-27 | 2019-10-15 | 宝鸡石油机械有限责任公司 | Jumper cable quickly connects and urgent disengaging gear between a kind of ocean platform |
| CN113864493A (en) * | 2021-10-22 | 2021-12-31 | 中原工学院 | Quick-connection type one-way grout-stopping fracture valve device and using method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235265A (en) * | 2022-02-23 | 2022-03-25 | 东营鼎洪石油技术开发有限公司 | Oil field is with oil pressure seat that can install manometer fast |
| CN115949789A (en) * | 2023-03-15 | 2023-04-11 | 四川凯德源科技有限公司 | A break valve for LNG adds mechanism of qi |
| CN115949789B (en) * | 2023-03-15 | 2023-05-16 | 四川凯德源科技有限公司 | A break-open valve for LNG mechanism of qi |
| CN116817058A (en) * | 2023-06-13 | 2023-09-29 | 广东泰恩流体控制设备有限公司 | Pipeline connector |
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Application publication date: 20210706 |