CN115076483A - Hydraulic quick self-locking device suitable for LNG hose conveying system - Google Patents
Hydraulic quick self-locking device suitable for LNG hose conveying system Download PDFInfo
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- CN115076483A CN115076483A CN202210650599.8A CN202210650599A CN115076483A CN 115076483 A CN115076483 A CN 115076483A CN 202210650599 A CN202210650599 A CN 202210650599A CN 115076483 A CN115076483 A CN 115076483A
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- flange
- connecting pipeline
- locking device
- butt
- conveying system
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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
- F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
- F16L33/16—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with sealing or securing means using fluid pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0352—Pipes
- F17C2205/0364—Pipes flexible or articulated, e.g. a hose
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/037—Quick connecting means, e.g. couplings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/032—Hydrocarbons
- F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, PLNG
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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 invention discloses a hydraulic quick self-locking device suitable for an LNG (liquefied natural gas) hose conveying system, which comprises a connecting pipeline, wherein one end of the connecting pipeline is provided with a connecting flange which can be connected with a hose, the other end of the connecting pipeline is fixed with a rotating mechanism, the rotating mechanism is connected with a hydraulic oil cylinder, and the other end of the connecting pipeline is provided with a butt flange; the butt flange comprises N sets of pressing mechanisms, N sets of guide mechanisms and N sets of buffer mechanisms, wherein the N sets of pressing mechanisms, the N sets of guide mechanisms and the N sets of buffer mechanisms are uniformly arranged in the circumferential direction of the butt flange; the pressing mechanism is respectively hinged with the rotating mechanism and the connecting pipeline, so that the butt joint of the ship header flange and the butt joint flange is accelerated; the guide mechanism is connected with the connecting pipeline and is distributed at intervals with the pressing mechanism, and the guide mechanism guides when the ship header flange is butted with the butting flange; the buffer mechanism is fixedly connected with the end part of the butt flange and used for avoiding the direct collision of the end surface of the butt flange and the end surface of the ship header flange. The invention effectively slows down the impact on the structural part and the sealing ring of the equipment caused by collision and prolongs the service life of the self-locking device.
Description
Technical Field
The invention relates to a hydraulic quick self-locking device, in particular to a hydraulic quick self-locking device suitable for an LNG hose conveying system.
Background
With social development and technological progress, China has more and more natural gas demands, and natural gas resources are enriched in deep sea areas, so long-distance transportation needs to be carried out by means of marine LNG transport ships after exploitation. LNG hose conveying system realizes the important device that LNG carried between ship or the ship bank, compares its strong adaptability with traditional unloading arm, can overcome the great bad weather of wave and sea breeze, ensures the stability and the security that LNG carried.
At present, the butt joint of the LNG hose conveying system and the LNG target ship is mainly realized by manual operation, the manual connection and disassembly workload is large, a large number of required personnel are needed, the efficiency is low, the LNG temperature is lower than-160 ℃, and the LNG hose conveying system is inflammable and explosive and has high danger. At present, no hydraulic quick self-locking device applied to the LNG hose conveying system exists in the market, so that the hydraulic quick self-locking device suitable for the LNG hose conveying system is more urgently researched and developed.
This novel quick self-lock device that surges is different with unload arm hydraulic pressure quick connecting device, and it needs to support whole hose and inside LNG quality, and intensity requires highly, and the during operation still need hoist and mount to target ship on, therefore whole set of device weight can not be too big. When in butt joint, through the design of the buffer mechanism and the guide mechanism, the impact on the structural part and the sealing ring of the equipment, which is generated by the collision with the end face of the ship header flange, is effectively reduced, and the service life of the hydraulic quick self-locking mechanism is greatly prolonged.
The hydraulic pressure QCDC intensity that designs in patent CN 111059379A is lower, and the flange of the upper plate of welding body does not have the strengthening rib design with the welded pipe. The strength of the turntable flange needs to be further strengthened because the turntable flange bears the compression spring and the hydraulic oil cylinder to generate a combined action. And the reliability of the connection mode of the pressing part and the clamping claw part is lower.
The hydraulic QCDC designed in patent CN 212564870U has excessive mass and large pressure drop (limiting LNG flow rate). The hydraulic QCDC is internally provided with other designs, so that the LNG pressure drop at the front end and the rear end of the QCDC is too large, the mass is increased, the contact position of a clamping jaw and a target flange is easily abraded, and the service life of the clamping jaw is shortened.
The QCDC designed in patent CN 112555533 a cannot realize a stable and reliable self-locking function.
Disclosure of Invention
Aiming at the technical defects, the invention provides the hydraulic quick self-locking device suitable for the LNG hose conveying system, so that the impact on equipment structural parts and sealing rings caused by the collision with the end faces of the ship header flanges is effectively relieved, and the service life of the hydraulic quick self-locking mechanism is greatly prolonged.
The technical solution for realizing the purpose of the invention is as follows:
a hydraulic quick self-locking device suitable for an LNG hose conveying system comprises a connecting pipeline, wherein one end of the connecting pipeline is provided with a connecting flange which can be connected with a hose, the other end of the connecting pipeline is fixed with a rotating mechanism, the rotating mechanism is connected with a hydraulic oil cylinder, the hydraulic oil cylinder drives the rotating mechanism to rotate around the connecting pipeline, and the other end of the connecting pipeline is provided with a butt flange which is in butt joint with a ship header flange; the butt flange comprises N sets of pressing mechanisms, N sets of guide mechanisms and N sets of buffer mechanisms, wherein the N sets of pressing mechanisms, the N sets of guide mechanisms and the N sets of buffer mechanisms are uniformly arranged in the circumferential direction of the butt flange; the pressing mechanism is respectively hinged with the rotating mechanism and the connecting pipeline, and the butt joint of the ship header flange and the butt joint flange is accelerated under the driving of the rotating mechanism; the guide mechanism is connected with the connecting pipeline and is distributed at intervals with the pressing mechanism, and the guide mechanism guides when the ship header flange is butted with the butting flange; the buffer mechanism is fixedly connected with the end part of the butt flange and used for avoiding the direct collision of the end face of the butt flange and the end face of the ship header flange.
Furthermore, hold-down mechanism includes jack catch assembly and spring assembly, spring assembly one end and rotary mechanism are articulated, and the other end is articulated with the jack catch assembly, the jack catch assembly is articulated with the second journal stirrup of fixing on connecting tube.
Furthermore, the jaw assembly comprises a jaw, and an anti-friction sleeve and a pressing block which are arranged on the jaw; the jack catch passes through antifriction cover and articulates with the second journal stirrup, the briquetting is used for preventing and docking flange end face collision, the jack catch central part is the hole.
Furthermore, the guide mechanism comprises a guide rod and an anti-collision block, and the guide rod is detachably fixedly connected with a first lug fixed on the connecting pipeline; the anti-collision block is arranged at one end, far away from the butt flange, of the guide rod and is prevented from colliding with the butt flange.
Furthermore, the guide rod is integrally in an oblique line type, and the wider end of the guide rod is fixedly connected with the first lug.
Furthermore, the pressing block or the anti-collision block is made of red copper flexible materials.
Furthermore, the buffer mechanism comprises a movable block, a telescopic shaft and a spring; a groove is formed in the movable block, one end of the spring is connected with the movable block, and the other end of the spring is fixedly connected with the butt flange; one end of the telescopic shaft is fixedly connected with the butt flange, and the other end of the telescopic shaft is located in the groove of the movable block and can be telescopic within the range of the groove.
Further, the rotating mechanism comprises a rotating ring and a fixed ring; the fixed ring is fixedly connected with the connecting pipeline through a turntable flange, and the rotating ring rotates under the driving of the hydraulic oil cylinder and is hinged with the pressing mechanism.
Furthermore, the hydraulic oil cylinder comprises an oil cylinder and two oil cylinder support lugs, the two oil cylinder support lugs are connected with two ends of the oil cylinder through pin shafts, the oil cylinder connected with the telescopic end of the oil cylinder is welded and fixed with the rotating ring, and the other oil cylinder support lug is welded with the fixing ring.
Further, the end face of the butt flange is provided with a sealing ring, and N is not less than 3.
Compared with the prior art, the invention has the following remarkable advantages:
(1) the hydraulic quick self-locking device is provided with a buffer mechanism and a guide mechanism, part of kinetic energy generated during butt joint can be converted into spring potential energy through spring compression, and part of kinetic energy is converted into heat, so that the service life of the hydraulic quick self-locking device is prolonged;
(2) the clamping jaw support lug and the guide rod support lug are integrally designed, so that the weight of the device is reduced, and after multiple butt-joint collisions, the weak point is loosened, so that the root of the support lug is prevented from being seriously deformed;
(3) the pressing mechanism is matched, manual operation is replaced by pressing of the rotating mechanism and the spring, and after the two flanges are centered, one-key type rapid synchronous butt joint can be realized through the pressing mechanism, so that the safety and the butt joint efficiency of butt joint operation are improved, and equipment damage caused by floating of a transport ship is prevented;
(4) the hydraulic quick self-locking device is entirely subjected to strict simulation calculation, in order to improve reliability, the important stress unit is made of a certain type of dual-phase steel, and the dual-phase steel has higher yield strength compared with austenitic stainless steel, so that the influences of the self weight of the hose and the stretching of the LNG in the hose during emergency separation can be overcome, the size can be reduced in design, and the mass can be reduced;
(5) the guide rod and the clamping claw are assembled through a weight reduction design, so that the integral mass of the QCDC is greatly reduced;
(6) the design of pipeline and flange joint has the lug, both plays the reinforced structure intensity effect, is convenient for hoist and mount simultaneously.
Drawings
Fig. 1 is a schematic structural view of the hydraulic quick self-locking device of the invention.
FIG. 2 is an isometric view of the present invention containing 6 drive assemblies and 6 guide mechanisms.
Fig. 3 is a schematic view of a guide bar after the weight reduction design of the present invention.
Fig. 4 is a schematic structural view of a jaw assembly after the weight reduction design of the invention.
Fig. 5 is a schematic view of a buffer unit.
Fig. 6 is a schematic diagram of a hydraulic oil cylinder structure.
In the figure: the device comprises butt flanges 1, connecting pipelines 2, connecting flanges 3, a rotating mechanism 4, a rotating ring 4-1, a fixing ring 4-2, a pressing mechanism 5, a first bearing 5-1, a spring assembly 5-2, a second bearing 5-3, a jaw assembly 5-4, a jaw 5-4-1, an anti-friction sleeve 5-4-2, a pressing block 5-4-3, a guide mechanism 6, a guide rod 6-1, an anti-collision block 6-2, a buffer mechanism 7, a movable block 7-1, a telescopic shaft 7-2, a spring 7-3, a first support lug 8-1, a second support lug 8-2, a mounting flange 8-3, an oil cylinder lower support lug 9-1, a pin shaft 9-2, an oil cylinder upper support lug 9-3 and an oil cylinder 9-4.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
As shown in fig. 1 to 2, the long-life-cycle hydraulic rapid self-locking device suitable for an LNG hose conveying system comprises a connecting pipeline 2, wherein one end of the connecting pipeline 2 is provided with a connecting flange 3 capable of being connected with a hose, the other end of the connecting pipeline 2 is fixed with a rotating mechanism 4, the rotating mechanism 4 is connected with a hydraulic cylinder, the hydraulic cylinder drives the rotating mechanism 4 to rotate around the connecting pipeline 2, the other end of the connecting pipeline 2 is provided with a butt flange 1 capable of being in butt joint with a ship header flange, and the connecting pipeline further comprises N sets of compressing mechanisms 5, N sets of guide mechanisms 6 and N sets of buffer mechanisms 7 which are uniformly arranged along the circumferential direction of the butt flange 1 at the side of the ship header flange; the end face of the butt flange 1 is provided with a sealing ring, and N > is 3;
with reference to fig. 5, the buffer mechanism 7 includes a movable block 7-1, a telescopic shaft 7-2 and a spring 7-3, and is characterized in that: the device is used for avoiding the direct collision of the seal ring and the end face of the ship header flange, and plays a role in buffering and protecting. The telescopic shaft 7-2 is in a movable state, and one end of the telescopic shaft limits one degree of freedom through a boss; the spring 7-3 is in a movable state and can be freely compressed by the movable block 7-1, the other degrees of freedom of the telescopic shaft 7-2 are limited by the acting force of the spring 7-3 and the upper hole of the butt flange, the working principle is that the spring 7-3 between the movable block 7-1 and the butt flange 1 is in a compressed state, the movable block 7-1 is in a state of being far away from the flange 1, and the telescopic shaft 7-2 is fixed with the butt flange 1 through a nut and can limit the movable block 7-1 to be far away from the flange 1. The movable block 7-1 is higher than the sealing ring, so that the impact force can be reduced, the structure is protected, and the service life of the sealing ring is prolonged.
The pressing mechanism 5 comprises a jaw assembly 5-4 and a spring assembly 5-2, two ends of the spring assembly 5-2 are respectively fixed with a first bearing 5-1 and a second bearing 5-3, the quick synchronous pressing function of the jaw assembly 5-4 is realized under the rotating action of a rotating mechanism 4 connected with the spring assembly 5-2, the pressing mechanism 5 is used for quick butt joint operation of an LNG hose conveying system, and one-key hydraulic quick synchronous butt joint of the hose conveying system and a target ship can be realized. One end of the spring assembly 5-2 is hinged to the rotating mechanism 4 through a first bearing 5-1 and can move along with the rotation of the rotating mechanism 4, and the other end of the spring assembly is hinged to the jaw assembly 5-4 through a second bearing 5-3; the jaw assembly 5-4 is hinged with a second lug 8-2 fixed on the connecting pipeline 2 and can rotate around the hinged part under the pushing of the spring assembly 5-2; the rotating mechanism 4 rotates under the action of external thrust to drive the spring assembly 5-2 to swing and the jaw assembly 5-4 to rotate, so that the jaw assembly 5-4 is quickly and synchronously pressed.
Referring to fig. 3, the guide mechanism 6 includes a guide rod 6-1 and an anti-collision block 6-2, and the device is used for assisting the docking operation of the LNG hose conveying system and is compatible with a range of docking errors. The guide rod 6-1 is fixed on the first support lug 8-1 in an easily detachable mode and is used for realizing the connection of the hydraulic quick self-locking device and the guide rod 6-1; the guide rod 6-1 is integrally in an oblique line type and is used for buffering collision impact and gradually converging to ensure the centering degree of the two flanges; the anti-collision block 6-2 is made of a flexible material (red copper), the flexible material can be made of red copper, and the anti-collision block is mounted at the top end of the guide rod 6-1 and used for preventing accidental impact from damaging the flange seal.
Referring to fig. 4, the jaw assembly 5-4 comprises a jaw 5-4-1, an anti-friction sleeve 5-4-2 and a pressing block 5-4-3, wherein the pressing block 5-4-3 is installed at one end of the jaw 5-4-1 and is made of a flexible material to achieve an anti-collision effect; the anti-friction sleeve 5-4-2 is arranged on the jaw 5-4-1, the anti-friction sleeve 5-4-2 is a copper sleeve, and is hinged with the second support lug 8-2 fixed on the connecting pipeline 2 through the anti-friction sleeve 5-4-2 to play a friction protection role, the jaw is made of dual-phase steel, a hole is formed in the center, and on the basis of meeting the safe use requirement, the weight reduction design is performed on the jaw, so that the overall mass is reduced.
When the LNG hose conveying system is in butt joint, the ship flange can be gradually attached to the buffer mechanism 7 on the outer side of the butt joint flange along the guide mechanism 6, so that the butt joint impact force is relieved; when the two flanges are attached, the rotating mechanism 4 is controlled to rotate forwards, so that the jaw assembly 5-4 is driven by the spring assembly 5-2 to turn over, and the compression and self-locking of the two flanges are realized through the pressing force of the spring. On the contrary, the rotating mechanism 4 is controlled to rotate reversely, so that the two flanges are separated.
The rotating mechanism 4 comprises a rotating ring 4-1 and a fixed ring 4-2; the fixed ring 4-2 is fixedly connected with the connecting pipeline 2 through a turntable flange, and the rotating ring 4-1 is hinged with the spring assembly 5-2;
reinforcing ribs convenient to hoist are designed at the joints of the connecting pipelines 2 and the connecting flanges 3, so that the working efficiency is improved, and the stress units of the whole device are made of dual-phase steel, so that the strength is higher;
referring to FIG. 6, the hydraulic cylinder comprises a lower support lug 9-1, a pin shaft 9-2, an upper support lug 9-3 and an oil cylinder 9-4, wherein the lower support lug 9-1 is welded with a fixed ring 4-2, the upper support lug 9-3 is welded and fixed with a rotating ring 4-1, and the oil cylinder 9-4 is driven to stretch by external power so as to drive the rotating ring 4-1 to rotate.
Claims (10)
1. A hydraulic quick self-locking device suitable for an LNG hose conveying system comprises a connecting pipeline (2), wherein one end of the connecting pipeline (2) is provided with a connecting flange (3) which can be connected with a hose, the other end of the connecting pipeline (2) is fixed with a rotating mechanism (4), the rotating mechanism (4) is connected with a hydraulic oil cylinder, the hydraulic oil cylinder drives the rotating mechanism (4) to rotate around the connecting pipeline (2), and the other end of the connecting pipeline (2) is provided with a butt flange (1) which is in butt joint with a ship header flange; the butt flange is characterized by further comprising N sets of pressing mechanisms (5), N sets of guide mechanisms (6) and N sets of buffer mechanisms (7) which are uniformly arranged in the circumferential direction of the butt flange (1); the pressing mechanism is respectively hinged with the rotating mechanism (4) and the connecting pipeline (2), and the butt joint of the ship header flange and the butt joint flange (1) is accelerated under the driving of the rotating mechanism (4); the guide mechanism (6) is connected with the connecting pipeline (2) and is distributed at intervals with the pressing mechanism, and guides when the ship header flange is butted with the butting flange (1); the buffer mechanism (7) is fixedly connected with the end part of the butt flange (1) and used for avoiding the direct collision of the end face of the butt flange and the end face of the ship header flange.
2. The hydraulic quick self-locking device for the LNG hose conveying system is characterized in that the pressing mechanism (5) comprises a jaw assembly (5-4) and a spring assembly (5-2), one end of the spring assembly (5-2) is hinged to the rotating mechanism (4), the other end of the spring assembly (5-2) is hinged to the jaw assembly (5-4), and the jaw assembly (5-4) is hinged to a second lug (8-2) fixed on the connecting pipe (2).
3. The hydraulic quick self-locking device applicable to the LNG hose conveying system is characterized in that the jaw assembly (5-4) comprises a jaw (5-4-1), and an anti-friction sleeve (5-4-2) and a pressing block (5-4-3) which are arranged on the jaw (5-4-1); the clamping jaw (5-4-1) is hinged with the second support lug (8-2) through an anti-friction sleeve (5-4-2), the pressing block (5-4-3) is used for preventing the end face of the butt flange (1) from colliding, and the center of the clamping jaw (5-4-1) is provided with a hole.
4. The hydraulic quick self-locking device applicable to the LNG hose conveying system is characterized in that the guide mechanism (6) comprises a guide rod (6-1) and an anti-collision block (6-2), and the guide rod (6-1) is detachably fixedly connected with a first support lug (8-1) fixed on the connecting pipeline (2); the anti-collision block (6-2) is arranged at one end, far away from the butt flange (1), of the guide rod (6-1) and is prevented from colliding with the butt flange (1).
5. The hydraulic quick self-locking device for the LNG hose conveying system according to claim 4, wherein the guide rod (6-1) is of an overall oblique line type, and the wider end of the guide rod is fixedly connected with the first lug (8-1).
6. The hydraulic quick self-locking device for the LNG hose conveying system according to claim 3 or 4, wherein the pressing block (5-4-3) or the anti-collision block (6-2) is made of red copper flexible material.
7. The hydraulic quick self-locking device applicable to the LNG hose conveying system according to claim 1, wherein the buffer mechanism (7) comprises a movable block (7-1), a telescopic shaft (7-2) and a spring (7-3); a groove is formed in the movable block (7-1), one end of the spring (7-3) is connected with the movable block (7-1), and the other end of the spring is fixedly connected with the butt flange (1); one end of the telescopic shaft (7-2) is fixedly connected with the butt flange (1), and the other end is positioned in the groove of the movable block (7-1) and can be telescopic in the range of the groove.
8. The hydraulic quick self-locking device for LNG hose conveying systems according to claim 1, characterized in that the rotating mechanism (4) comprises a rotating ring (4-1) and a fixed ring (4-2); the fixed ring (4-2) is fixedly connected with the connecting pipeline (2) through a turntable flange, and the rotating ring (4-1) is driven by the hydraulic oil cylinder to rotate and is hinged with the pressing mechanism (5).
9. The hydraulic quick self-locking device applicable to the LNG hose conveying system according to claim 8, wherein the hydraulic cylinder comprises a cylinder (9-4) and two cylinder lugs, the two cylinder lugs are connected with two ends of the cylinder (9-4) through a pin shaft (9-2), the cylinder connected with the telescopic end of the cylinder (9-4) is welded and fixed with the rotating ring (4-1), and the other cylinder lug is welded with the fixing ring (4-2).
10. The hydraulic quick self-locking device suitable for the LNG hose conveying system according to any one of claims 1 to 9, wherein a sealing ring is arranged on an end face of the butt flange (1), and N is not less than 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210650599.8A CN115076483A (en) | 2022-06-10 | 2022-06-10 | Hydraulic quick self-locking device suitable for LNG hose conveying system |
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| CN202210650599.8A CN115076483A (en) | 2022-06-10 | 2022-06-10 | Hydraulic quick self-locking device suitable for LNG hose conveying system |
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| CN115076483A true CN115076483A (en) | 2022-09-20 |
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| CN202210650599.8A Pending CN115076483A (en) | 2022-06-10 | 2022-06-10 | Hydraulic quick self-locking device suitable for LNG hose conveying system |
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| CN112303359A (en) * | 2020-11-03 | 2021-02-02 | 中海石油气电集团有限责任公司 | Quick connecting device of LNG low temperature conveying system |
| CN214197680U (en) * | 2020-11-03 | 2021-09-14 | 中海石油气电集团有限责任公司 | Quick connecting device of LNG low temperature conveying system |
| CN113389957A (en) * | 2021-04-15 | 2021-09-14 | 连云港杰瑞自动化有限公司 | Small-size quick connecting device suitable for LNG tank wagon |
| CN216590465U (en) * | 2022-01-17 | 2022-05-24 | 中海油能源发展股份有限公司采油服务分公司 | Manual quick connecting device suitable for LNG hose is carried |
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