CN111561659A - Ultra-low temperature liquefaction wharf loading and unloading arm - Google Patents
Ultra-low temperature liquefaction wharf loading and unloading arm Download PDFInfo
- Publication number
- CN111561659A CN111561659A CN202010506368.0A CN202010506368A CN111561659A CN 111561659 A CN111561659 A CN 111561659A CN 202010506368 A CN202010506368 A CN 202010506368A CN 111561659 A CN111561659 A CN 111561659A
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- Prior art keywords
- arm
- outer arm
- rope wheel
- driving mechanism
- pipe
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- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 10
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 12
- 239000003949 liquefied natural gas Substances 0.000 description 5
- 238000010926 purge Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 210000000078 claw Anatomy 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
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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
- F17C13/004—Details of vessels or of the filling or discharging of vessels for large storage vessels not under pressure
-
- 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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
-
- 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
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0146—Two-phase
- F17C2223/0153—Liquefied gas, e.g. LPG, GPL
-
- 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
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
Abstract
Ultra-low temperature liquefaction pier loading and unloading arm relates to port and pier fluid handling equipment technical field, especially a dedicated ultra-low temperature fluid loading and unloading arm of liquid chemical industry pier. The upright post is connected with the rotating shaft box through a rotary joint, the rotating shaft box is rotationally connected with the supporting box, and the upper end of the supporting box is rotationally connected with the upper end of the outer arm supporting piece; the process pipeline comprises a main pipeline, an outer arm pipe and an inner arm pipe; the rope wheel system comprises an upper rope wheel, a lower rope wheel and a steel wire rope, the upper end of the support box is in rotating connection with the upper rope wheel, the lower end of the support box is in rotating connection with the lower rope wheel, the upper rope wheel is connected with the lower rope wheel through the steel wire rope, and the lower rope wheel is connected with the counterweight mechanism; the hydraulic driving mechanism comprises an inner arm driving mechanism, an outer arm driving mechanism and a horizontal rotation driving mechanism, the inner arm driving mechanism and the horizontal rotation driving mechanism are installed at the upper end of the upright post, the outer clamping jaw and the inner clamping jaw are connected through a compression spring, and force generated by the compression spring always vertically acts on the outer arm of the inner clamping jaw, so that the inner clamping jaw can generate enough pressing force.
Description
Technical Field
The invention relates to the technical field of fluid loading and unloading equipment for port wharfs, in particular to an ultra-low temperature fluid loading and unloading arm special for a liquid chemical wharf.
Background
With the rapid development of the domestic liquefied natural gas market, the application of the LNG receiving stations of each large port is more and more extensive, the transportation volume of the liquefied natural gas ship is rapidly expanded, and after the liquefied natural gas ship is berthed at a wharf, a loading and unloading arm is required to connect pipelines of the ship and the wharf, so that the LNG transmission from the ship to the wharf is realized.
The existing normal-temperature loading and unloading arm can only transport normal-temperature media generally, and can cause low-temperature shrinkage and material deformation when transporting low-temperature media, so that a support box and an outer arm support piece can be clamped due to shrinkage of an inner arm pipe and an outer arm pipe in a rotating process.
Disclosure of Invention
The invention aims to provide a loading and unloading arm of an ultralow temperature liquefaction wharf, aiming at overcoming the defects in the prior art, and achieving the purpose of conveying low-temperature and ultralow-temperature liquid chemical products.
The invention provides a loading and unloading arm of an ultralow temperature liquefaction wharf, which comprises a stand column, a rotary shaft box, a support box, a process pipeline, a three-dimensional joint, a rope wheel system and a hydraulic driving mechanism, wherein the stand column is arranged on the support box; the upright post is connected with the rotating shaft box through a rotary joint, the rotating shaft box is rotationally connected with the supporting box, and the upper end of the supporting box is rotationally connected with the upper end of the outer arm supporting piece; the process pipeline comprises a main pipeline, an outer arm pipe and an inner arm pipe; the rope wheel system comprises an upper rope wheel, a lower rope wheel and a steel wire rope, the upper end of the support box is in rotating connection with the upper rope wheel, the lower end of the support box is in rotating connection with the lower rope wheel, the upper rope wheel is connected with the lower rope wheel through the steel wire rope, and the lower rope wheel is connected with the counterweight mechanism; the hydraulic driving mechanism comprises an inner arm driving mechanism, an outer arm driving mechanism and a horizontal rotation driving mechanism, the inner arm driving mechanism and the horizontal rotation driving mechanism are installed at the upper end of the upright post, and the outer arm driving mechanism is installed at the lower part of the supporting box;
the method is characterized in that: a main pipeline is arranged in a cavity of the upright post and is connected with the inner wall of the cavity of the upright post, the upper end of the main pipeline is rotationally connected with the inner arm pipe through a low-temperature rotary joint, the upper end of the outer arm pipe is rotationally connected with the upper end of the inner arm pipe through a low-temperature rotary joint, the lower end of the outer arm pipe is connected with a three-dimensional joint, and the outer end of the three-dimensional joint is connected with a quick joint through an emergency separation device; the outer arm of the lower half part of the outer arm pipe is rotationally connected with the lower end of the outer arm supporting piece; the quick connector comprises a main pipeline, a swing mechanism and a clamping mechanism, wherein two ends of the main pipeline are respectively connected with a flange plate, and the swing mechanism and the clamping mechanism are respectively arranged on the main pipeline; the slewing mechanism comprises a fixed ring, a slewing ring and a hydraulic cylinder; one end of a piston rod of the hydraulic cylinder is hinged with the fixed ring, and one end of a cylinder body of the hydraulic cylinder is hinged with the rotary ring; the clamping mechanism comprises an inner clamping jaw and an outer clamping jaw, the lower ends of the inner clamping jaw and the outer clamping jaw are coaxially hinged with an outer arm of the main pipeline, the inner clamping jaw is positioned at the inner end of the outer clamping jaw, the inner end of the outer clamping jaw is fixedly connected with the outer end of the mandrel, the inner end of the mandrel is hinged with the outer end of the inner clamping jaw, the mandrel is sleeved with a spring seat, the outer side of the mandrel is sleeved with a compression spring, one end of the compression spring is connected with the inner clamping jaw, and the other end of the compression; the rotary ring is provided with a plurality of fork-shaped joints, the fork-shaped joints and the outer clamping claws are arranged in a staggered mode, the lower end of the connecting rod is connected with the fork-shaped joints through joint bearings, and the upper end of the connecting rod is connected with the outer clamping claws through the joint bearings.
The upper end and the lower end of the outer arm pipe and the upper end and the lower end of the inner arm pipe are respectively provided with a connecting pipe which are vertically distributed, the upper end of the main pipeline is rotationally connected with the lower end of a 90-degree bent joint through a low-temperature rotary joint, the upper end of the 90-degree bent joint is rotationally connected with the connecting pipe at the lower end of the inner arm pipe through a low-temperature rotary joint, the lower end of the 90-degree bent joint is connected with another bent joint, one end of the bent joint is positioned at the opening position of the upright post, and the connecting pipe at the upper end of the outer arm pipe penetrates through a.
The main pipeline is connected with the inner wall of the cavity of the upright post through a pipeline fixing device.
The pipeline fixing device comprises a fixing ring and a connecting plate, a plurality of lug plates which are uniformly distributed in a circumferential shape are arranged on the inner wall of a cavity of the stand column, an outer arm pipe of the fixing ring is fixedly connected with the lug plates through the connecting plate, and the fixing ring is sleeved on the outer side of the main pipeline.
The gas outlet of the low-temperature rotary joint is provided with a methane gas concentration monitoring sensor and an ethane gas concentration monitoring sensor which are connected with an alarm through a circuit.
The outer arm pipe and the outer arm supporting piece are connected through the connecting frame, the connecting frame comprises an upper base and a lower base, a plurality of through holes are formed in the upper base and the lower base respectively, the upper base is fixedly connected with the outer arm pipe, the lower base is fixedly connected with the outer arm supporting piece, the bolt penetrates through the through holes of the upper base and the lower base to be in threaded fit with the nut, the upper base and the lower base are fixed, and the diameter of the through holes of the upper base and the lower base is larger than that of the bolt.
Compared with the prior art, the invention has the following outstanding beneficial effects:
the upper end of the outer arm of the device is rotationally connected with the upper end of the inner arm, the lower end of the outer arm is rotationally connected with the outer arm support, the lower end of the inner arm penetrates through the through hole at the rotational joint of the support box and the upright post and is rotationally connected with the through hole, so that the outer arm, the inner arm, the outer arm support and the support box form a quadrangle, when the outer arm and the inner arm contract in cold, the outer arm can rotate around the rotational joint with the outer arm support, the inner arm can rotate around the rotational joint of the support box and the upright post, and the phenomenon that the outer arm support and the support box are clamped and cannot rotate mutually due to the fact that the outer arm and the inner arm contract in cold can be avoided.
The quick connector of the device comprises an inner jaw and an outer jaw, wherein the outer jaw is connected with the inner jaw through a compression spring, and the force generated by the compression spring always vertically acts on an outer arm of the inner jaw, so that the inner jaw can generate enough pressing force.
Drawings
Fig. 1 is a structural view of the developed state of the present invention.
Fig. 2 is a front view of the contracted state of the present invention.
Fig. 3 is a side view of the invention in a contracted state.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is a partially enlarged view of a portion B in fig. 3.
FIG. 6 is a schematic view of the structure of the quick connector portion of the present invention.
FIG. 7 is a top view of the quick connector portion of the present invention.
Fig. 8 is a partially enlarged view of a portion C in fig. 6.
Detailed Description
The invention is further described with reference to the drawings and the detailed description.
As shown in fig. 1 to 3, the present invention includes a column 14, a pivot box 8, a support box 3, a process pipeline, a three-dimensional joint 9, a sheave system and a hydraulic drive mechanism.
The upright post 14 and the supporting box 3 are respectively provided with a cavity which is communicated up and down, the upright post 14 is connected with the rotating shaft box 8 through a rotary joint, the rotating shaft box 8 is connected with the supporting box 3 in a rotating way, the lower half part of the upright post 14 is provided with an opening which is communicated with the cavity, the upper end of the supporting box 3 is connected with the upper end of the outer arm supporting piece 21 in a rotating way, and the rotating connection mode is as follows: the upper end of the supporting box 3 is provided with a rotating sleeve, the upper end of the outer arm supporting piece 21 is provided with a through hole, and the rotating sleeve is matched with the through hole of the outer arm supporting piece 21 through a bearing.
The process pipeline comprises a main pipeline 23, an outer arm pipe 22 and an inner arm pipe 4, wherein the upper end and the lower end of the outer arm pipe 22 and the upper end and the lower end of the inner arm pipe 4 are respectively provided with a connecting pipe which are vertically distributed, the main pipeline 23 is arranged in a cavity of a stand column 14, the main pipeline 23 is connected with the inner wall of the cavity of the stand column 23 through a pipeline fixing device 19, the upper end of the main pipeline 23 is rotatably connected with the lower end of a 90-degree bent joint through a low-temperature rotating joint, the upper end of the 90-degree bent joint is rotatably connected with the connecting pipe at the lower end of the inner arm pipe 4 through the low-temperature rotating joint, the lower end of the main pipeline is connected with another bent joint, one end of the bent joint is positioned at the opening position of the stand column 23, the lower end of the inner arm pipe 4 is connected with the box wall of a rotating shaft box 8 through the pipeline fixing device 19, the connecting pipe of, the outer end of the three-dimensional joint 9 is connected with a quick joint 20 through an emergency release device. The outer arm of the lower half of the outer arm pipe 22 is rotationally connected with the lower end of the outer arm support 21 in a manner that: the lower extreme of outer arm support piece 21 is equipped with a through-hole, rotates the seat and is equipped with a rotation axis, and the through-hole that rotation axis and outer arm supported passes through the bearing cooperation, is equipped with a through-hole on rotating the seat, rotates the seat cover in the outside of outer arm pipe 22.
As shown in fig. 6 to 8, the quick coupling 20 includes a main pipe 201, a rotation mechanism, and a clamping mechanism.
The two ends of the main pipeline 201 are fixedly connected with the flanges 203 respectively, the end faces of the two flanges 203 are provided with annular grooves respectively, annular sealing rings are installed in the annular sliding grooves, and the main pipeline 201 is provided with a swing mechanism and a clamping mechanism respectively.
The outside that is located the ring flange 203 of clamping mechanism one end of main part pipeline 201 is equipped with a plurality of deflector 202 that are circumference evenly distributed, and the inner of deflector 202 is equipped with the inclined plane, and deflector 202 can be to the manifold flange centering location of transport ship.
The slewing mechanism comprises a fixed ring 205, a slewing ring 206 and a hydraulic cylinder 211, wherein the fixed ring 205 is rotationally connected with the slewing ring 206 in a manner that: the lower end of the fixed ring 205 is fixedly connected with the sliding ring 207 through a bolt, an annular groove is formed in the outer ring wall of the sliding ring 207, an annular groove is also formed in the inner ring wall of the revolving ring 206, the cross sections of the annular grooves of the sliding ring 207 and the revolving ring 206 are semicircular, the annular groove of the sliding ring 207 and the annular groove of the revolving ring 206 are arranged correspondingly, the revolving ring 206 is sleeved on the outer side of the sliding ring 207, the two annular grooves form an annular cavity, and a plurality of balls 208 are arranged in the annular cavity, when the revolving ring 206 rotates around the sliding ring 207, the balls 208 can reduce the friction force between the revolving ring 206 and the sliding ring 207, and the revolving ring 206 can rotate around the sliding ring 207 more easily.
The fixed ring 205 and the revolving ring 206 can also be coupled by a bearing fit.
The lower end of the outer wall of the sliding ring 207 is provided with a lower limiting ring 210, the upper end of the inner ring of the revolving ring 206 is provided with an upper limiting ring 209, the lower limiting ring 210 is positioned at the lower end of the revolving ring 206, and the upper limiting ring 209 is positioned at the upper end of the sliding ring 207, so that the revolving ring 206 is positioned in the axial direction.
The fixed ring 205 and the revolving ring 206 are respectively provided with a support lug, one end of a piston rod of the hydraulic cylinder 211 is hinged with the support lug on the fixed ring 205, and one end of a cylinder body of the hydraulic cylinder 211 is hinged with the support lug on the revolving ring 206.
The clamping mechanism comprises an inner clamping jaw 214 and an outer clamping jaw 213, a plurality of lug plates 204 which are uniformly arranged in a circumferential shape are arranged on the main pipeline 201, the lower ends of the inner clamping jaw 214 and the outer clamping jaw 213 are coaxially hinged with the lug plates 204, the inner clamping jaw 214 is positioned at the inner end of the outer clamping jaw 213, the inner end of the outer clamping jaw 213 is fixedly connected with the outer end of a mandrel 215, the inner end of the mandrel 215 is hinged with the outer end of the inner clamping jaw 214, the mandrel 215 is sleeved with a spring seat 216, a compression spring 217 is sleeved on the outer side of the mandrel 215, one end of the compression spring 217 is connected with the inner clamping jaw 214, and the other end of the compression.
The rotary ring 206 is provided with a plurality of fork-shaped joints 212 which are evenly distributed in a circumferential shape, the number of the fork-shaped joints 212 is the same as that of the outer clamping jaws 213, the fork-shaped joints 212 and the outer clamping jaws 213 are arranged in a staggered mode, the lower end of a connecting rod 219 is connected with the fork-shaped joints 212 through a joint bearing 218, and the upper end of the connecting rod 219 is connected with the outer clamping jaws 213 through the joint bearing 218.
And a nitrogen purging device 16, a rotary joint purging device 17 and an electro-hydraulic system 15 are mounted at the lower end of the upright column 14. The nitrogen purging device 16, the rotary joint purging device 17 and the electro-hydraulic system 15 are in the prior art, and the specific structures are not described in detail.
The rotary joint purging device 17 is respectively connected with the air inlet and the air outlet of the low-temperature rotary joint through pipelines. The gas outlet position department of low temperature rotary joint is provided with methane gas concentration monitoring sensor and ethane gas concentration monitoring sensor, and methane gas concentration monitoring sensor and ethane gas concentration monitoring sensor pass through the circuit and are connected with the alarm, the circuit is prior art, and its specific structure is no longer repeated. Whether methane gas or ethane gas leaks into the cavity of the low-temperature rotary joint can be detected through the methane gas concentration monitoring sensor and the ethane gas concentration monitoring sensor.
The rope wheel system comprises an upper rope wheel 1, a lower rope wheel 24 and a steel wire rope 6, the upper end of the supporting box 3 is rotationally connected with the upper rope wheel 1, the lower end of the supporting box is rotationally connected with the lower rope wheel 24, the upper rope wheel 1 is connected with the lower rope wheel 24 through the steel wire rope 6, and the lower rope wheel is connected with a counterweight mechanism 25.
The hydraulic driving mechanism comprises an inner arm driving mechanism 7, an outer arm driving mechanism 12 and a horizontal rotating mechanism 10, the inner arm driving mechanism 7 and the horizontal rotating driving mechanism 10 are installed at the upper end of the upright post 14, the inner arm driving mechanism 7 drives the supporting box 3 to rotate around the rotating connection part of the inner arm driving mechanism 7 and the rotating box 8, the horizontal rotating mechanism 10 drives the rotating box 8 to rotate around the upright post 14, the outer arm driving mechanism 12 is installed on the lower part of the supporting box 3, and the outer arm driving mechanism 12 drives the outer arm supporting piece 21 to rotate around the rotating connection part of the outer arm driving mechanism 12 and the supporting box 3.
As shown in FIG. 4, the pipeline fixing device 19 comprises a fixing ring 19-3 and a connecting plate 19-2, a plurality of ear plates 19-1 which are uniformly distributed in a circumferential shape are arranged on the inner wall of the cavity of the upright post 14, an outer arm pipe 22 of the fixing ring 19-3 is fixedly connected with the ear plates 19-1 through the connecting plate 19-2, and the fixing ring 19-3 is sleeved on the outer side of a main pipeline 23.
The rotation axis of the rotary connection part of the support box 3 and the outer arm support 21 and the rotation axis of the rotary connection part of the upper end of the outer arm tube 22 and the upper end of the inner arm tube 4 belong to the same axis, the rotation axis of the rotary connection part of the inner arm tube 4 and the main pipeline 23 and the rotation axis of the rotary connection part of the support box 3 and the rotary shaft box 8 belong to the same axis, when the outer arm tube 22 and the inner arm tube 4 contract in cold, the outer arm tube 22 can rotate around the rotary connection part of the outer arm support 21, the inner arm tube 4 can rotate around the rotary connection part of the main pipeline 23, so that the rotary connection part of the outer arm tube 22 and the inner arm tube 4 moves downwards, the outer arm tube 22, the inner arm tube 4, the outer arm support 21 and the support box 3 form a quadrangle, and the phenomenon that the outer arm support 21 and the support box 3 are blocked and cannot rotate mutually due to the cold contraction of the outer arm tube 22 and the inner arm tube.
As shown in FIG. 5, the outer arm tube 22 and the outer arm support 21 are connected by the connecting frame 18, the connecting frame 18 comprises an upper base 18-1 and a lower base 18-2, a plurality of through holes which are uniformly distributed in a circumferential shape are respectively arranged on the upper base 18-1 and the lower base 18-2, the upper base 18-1 is fixedly connected with the outer arm tube 22, the lower base 18-2 is fixedly connected with the outer arm support 21, bolts penetrate through the through holes of the upper base 18-1 and the lower base 18-2 to be in threaded fit with nuts, the upper base 18-1 and the lower base 18-2 are fixed, the diameter of the through holes of the upper base 18-1 and the lower base 18-2 is larger than that of the bolts, and when the outer arm tube 22 contracts in a cold condition, the upper base 18-1 and the lower base 18-2 can be slightly dislocated.
It should be noted that while the invention has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various obvious changes can be made therein without departing from the spirit and scope of the invention.
Claims (6)
1. An ultra-low temperature liquefaction wharf loading and unloading arm comprises a stand column (14), a rotating shaft box (8), a support box (3), a process pipeline, a three-dimensional joint (9), a rope wheel system and a hydraulic driving mechanism; the upright post (14) is connected with a rotating shaft box (8) through a rotary joint, the rotating shaft box (8) is rotationally connected with a supporting box (3), and the upper end of the supporting box (3) is rotationally connected with the upper end of an outer arm supporting piece (21); the process pipeline comprises a main pipeline (23), an outer arm pipe (22) and an inner arm pipe (4); the rope wheel system comprises an upper rope wheel (1), a lower rope wheel (24) and a steel wire rope (6), the upper end of a support box (3) is rotationally connected with the upper rope wheel (1), the lower end of the support box is rotationally connected with the lower rope wheel (24), the upper rope wheel (1) is connected with the lower rope wheel (24) through the steel wire rope (6), and the lower rope wheel is connected with a counterweight mechanism (25); the hydraulic driving mechanism comprises an inner arm driving mechanism (7), an outer arm driving mechanism (12) and a horizontal rotation driving mechanism (10), the inner arm driving mechanism (7) and the horizontal rotation driving mechanism (10) are installed at the upper end of the upright post (14), and the outer arm driving mechanism (12) is installed at the lower part of the supporting box (3);
the method is characterized in that: a main pipeline (23) is arranged in a cavity of the upright post (14), the main pipeline (23) is connected with the inner wall of the cavity of the upright post (23), the upper end of the main pipeline (23) is rotatably connected with the inner arm pipe (4) through a low-temperature rotary joint, the upper end of the outer arm pipe (22) is rotatably connected with the upper end of the inner arm pipe (4) through a low-temperature rotary joint, the lower end of the outer arm pipe (22) is connected with a three-dimensional joint (9), and the outer end of the three-dimensional joint (9) is connected with a quick joint (20) through an emergency separation device; the outer arm of the lower half part of the outer arm pipe (22) is rotationally connected with the lower end of the outer arm support piece (21); the quick connector (20) comprises a main pipeline (201), a swing mechanism and a clamping mechanism, wherein two ends of the main pipeline (201) are respectively connected with a flange plate (203), and the swing mechanism and the clamping mechanism are respectively arranged on the main pipeline (201); the slewing mechanism comprises a fixed ring (205), a slewing ring (206) and a hydraulic cylinder (211); one end of a piston rod of the hydraulic cylinder (211) is hinged with the fixed ring (205), and one end of a cylinder body of the hydraulic cylinder (211) is hinged with the rotary ring (206); the clamping mechanism comprises an inner jaw (214) and an outer jaw (213), the lower ends of the inner jaw (214) and the outer jaw (213) are coaxially hinged with an outer arm of the main pipeline (201), the inner jaw (214) is positioned at the inner end of the outer jaw (213), the inner end of the outer jaw (213) is fixedly connected with the outer end of a mandrel (215), the inner end of the mandrel (215) is hinged with the outer end of the inner jaw (214), the mandrel (215) is sleeved with a spring seat (216), a compression spring (217) is sleeved on the outer side of the mandrel (215), one end of the compression spring (217) is connected with the inner jaw (214), and the other end of the compression spring is connected with the spring seat (216); the rotary ring (206) is provided with a plurality of fork-shaped joints (212), the fork-shaped joints (212) and the outer clamping jaws (213) are arranged in a staggered mode, the lower end of the connecting rod (219) is connected with the fork-shaped joints (212) through the knuckle bearing (218), and the upper end of the connecting rod is connected with the outer clamping jaws (213) through the knuckle bearing (218).
2. The ultra-low temperature liquefaction dock loading arm of claim 1, wherein: the upper end and the lower end of the outer arm pipe (22) and the upper end and the lower end of the inner arm pipe (4) are respectively provided with a connecting pipe which are vertically distributed, the upper end of the main pipeline (23) is rotationally connected with the lower end of the 90-degree bent joint through a low-temperature rotary joint, the upper end of the 90-degree bent joint is rotationally connected with the connecting pipe at the lower end of the inner arm pipe (4) through a low-temperature rotary joint, the lower end of the 90-degree bent joint is connected with the other bent joint, one end of the bent joint is positioned at the opening position of the upright column (23), and the connecting pipe at the upper end of the outer arm pipe (22) penetrates through the rotating sleeve to.
3. The ultra-low temperature liquefaction dock loading arm of claim 1, wherein: the main pipeline (23) is connected with the inner wall of the cavity of the upright column (23) through a pipeline fixing device (19).
4. The ultra-low temperature liquefaction dock loading arm of claim 3, wherein: the pipeline fixing device (19) comprises a fixing ring (19-3) and a connecting plate (19-2), a plurality of lug plates (19-1) which are uniformly distributed in a circumferential shape are arranged on the inner wall of a cavity of the upright post (14), an outer arm pipe (22) of the fixing ring (19-3) is fixedly connected with the lug plates (19-1) through the connecting plate (19-2), and the fixing ring (19-3) is sleeved on the outer side of a main pipeline (23).
5. The ultra-low temperature liquefaction dock loading arm of claim 1, wherein: and a methane gas concentration monitoring sensor and an ethane gas concentration monitoring sensor are arranged at the position of the gas outlet of the low-temperature rotary joint and are connected with an alarm through circuits.
6. The ultra-low temperature liquefaction dock loading arm of claim 1, wherein: the outer arm pipe (22) and the outer arm support piece (21) are connected through the connecting frame (18), the connecting frame (18) comprises an upper base (18-1) and a lower base (18-2), a plurality of through holes are formed in the upper base (18-1) and the lower base (18-2), the upper base (18-1) is fixedly connected with the outer arm pipe (22), the lower base (18-2) is fixedly connected with the outer arm support piece (21), a bolt penetrates through the through holes of the upper base (18-1) and the lower base (18-2) and is in threaded fit with a nut, the upper base (18-1) and the lower base (18-2) are fixed, and the diameter of the through holes of the upper base (18-1) and the lower base (18-2) is larger than that of the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506368.0A CN111561659B (en) | 2020-06-05 | Ultralow temperature liquefaction wharf loading and unloading arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010506368.0A CN111561659B (en) | 2020-06-05 | Ultralow temperature liquefaction wharf loading and unloading arm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111561659A true CN111561659A (en) | 2020-08-21 |
| CN111561659B CN111561659B (en) | 2024-05-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113958876A (en) * | 2021-10-25 | 2022-01-21 | 连云港远大机械有限公司 | Anti-freezing low-temperature fluid loading and unloading arm with arm pipe purging function |
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| CN110005942A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low temperature fluid handling arm |
| CN111059379A (en) * | 2019-12-26 | 2020-04-24 | 大连华锐重工集团股份有限公司 | Hydraulic synchronous quick connector |
| CN212644231U (en) * | 2020-06-05 | 2021-03-02 | 山东冠卓重工科技有限公司 | Ultra-low temperature liquefaction wharf loading and unloading arm |
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| US4050585A (en) * | 1975-11-07 | 1977-09-27 | Ameron, Inc. | Hydraulically balanced marine loading arm |
| CN203615068U (en) * | 2013-11-13 | 2014-05-28 | 上海冠卓企业发展有限公司 | Special ultra-low temperature fluid loading arm for LNG (Liquefied Natural Gas) wharf |
| CN203754407U (en) * | 2013-12-30 | 2014-08-06 | 上海冠卓企业发展有限公司 | Low temperature loading and unloading arm for ship |
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| CN110005942A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low temperature fluid handling arm |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113958876A (en) * | 2021-10-25 | 2022-01-21 | 连云港远大机械有限公司 | Anti-freezing low-temperature fluid loading and unloading arm with arm pipe purging function |
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