CN110005941B - Arm pipe purging anti-freezing low-temperature fluid loading and unloading arm - Google Patents
Arm pipe purging anti-freezing low-temperature fluid loading and unloading arm Download PDFInfo
- Publication number
- CN110005941B CN110005941B CN201910363148.4A CN201910363148A CN110005941B CN 110005941 B CN110005941 B CN 110005941B CN 201910363148 A CN201910363148 A CN 201910363148A CN 110005941 B CN110005941 B CN 110005941B
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- arm
- rotary
- face
- pipe
- temperature fluid
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- 239000012530 fluid Substances 0.000 title claims abstract description 110
- 238000007710 freezing Methods 0.000 title claims abstract description 91
- 238000010926 purge Methods 0.000 title claims abstract description 45
- 238000007789 sealing Methods 0.000 claims abstract description 82
- 239000007791 liquid phase Substances 0.000 claims abstract description 55
- 239000012071 phase Substances 0.000 claims abstract description 43
- 238000007664 blowing Methods 0.000 claims abstract description 6
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 9
- 230000002528 anti-freeze Effects 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 30
- 239000007789 gas Substances 0.000 abstract description 18
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 15
- 230000008014 freezing Effects 0.000 abstract description 6
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000010408 sweeping Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000002310 elbow joint Anatomy 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
-
- 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
- F17C13/04—Arrangement or mounting of valves
-
- 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
- F17C13/10—Arrangements for preventing freezing
-
- 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
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/02—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with liquefied gases
-
- 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
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
- F17C7/02—Discharging liquefied gases
-
- 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
-
- 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
- F17C2205/0323—Valves
-
- 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
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/03—Dealing with losses
- F17C2260/031—Dealing with losses due to heat transfer
- F17C2260/032—Avoiding freezing or defrosting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention belongs to the field of low-temperature fluid loading and unloading equipment, and particularly relates to an anti-freezing low-temperature fluid loading and unloading arm with an arm pipe sweeping function. The technical proposal is as follows: the anti-freezing low-temperature fluid device comprises a stand column frame, a gas phase arm and a liquid phase arm, wherein the gas phase arm and the liquid phase arm are connected on the stand column frame side by side through an anti-freezing low-temperature fluid rotary joint and a rotary arm bearing frame, the gas phase arm and the liquid phase arm comprise a rotary arm, a rotary swing arm, a connecting arm, an anti-freezing low-temperature fluid rotary joint, a right-angle elbow, an arm pipe blowing system, a low-temperature breaking valve and a spring balancer, and the rotary arm and the rotary swing arm are sequentially connected through the anti-freezing low-temperature fluid rotary joint. The invention adopts a sealing cavity structure to avoid the contact of the air with water vapor with the bearing so as to prevent freezing; the residual low-temperature fluid in the arm pipe is completely loaded and unloaded by an arm pipe purging system; the rotary joint solves the problems that in the conventional rotary joint of the low-temperature fluid loading arm, nitrogen is required to be used for purging in order to prevent freezing, and a steel ball raceway structure is adopted, so that the rotary resistance is large and the service life is short.
Description
Technical Field
The invention belongs to the field of low-temperature fluid loading and unloading equipment, and particularly relates to an anti-freezing low-temperature fluid loading and unloading arm with an arm pipe sweeping function.
Background
At present, a steel ball raceway structure is adopted for a rotary joint on a loading arm applied to the field of low-temperature fluid equipment such as liquid nitrogen, liquid oxygen, liquefied natural gas and the like, and the part is communicated with the outside through a gap between parts.
In order to prevent water vapor in the air from entering the inside through a gap on the rotary joint, freezing is generated at the ball race part to cause incapability of rotating, the rotary joint is provided with a nitrogen purging system, nitrogen is required to be used for continuously purging the ball race part in the rotary joint during the process that low-temperature fluid passes through the loading arm, so that the air cannot enter the rotary joint, a nitrogen pipeline is required to be arranged, the equipment cost is increased, and nitrogen is wasted; the nitrogen channel is arranged in the low-temperature rotary joint, so that the rotary joint is complex in structure, easy to fail and inconvenient to assemble, disassemble and maintain.
Because the low-temperature fluid loading and unloading arm contains a plurality of low-temperature rotary joints, every rotary joint all needs nitrogen to sweep, all rotary joints need to be connected with the pipeline to form a rotary joint nitrogen sweeping system, the installation position of the breaking valve is limited, the breaking valve cannot be installed at the position with the nitrogen sweeping pipeline, otherwise, once misoperation occurs, the low-temperature breaking valve cannot be pulled out, or the rotary joint nitrogen sweeping system pipeline is connected after the low-temperature breaking valve is pulled out, the breaking valve does not play a role of breaking the pipeline, the fluid transportation vehicle and the fluid loading and unloading arm are pulled out, fluid leaks, fire, explosion, environmental pollution and other safety accidents are generated, and therefore the breaking valve can only be installed on the arm pipe at the tail end, the weight of the tail end arm is increased, and the operation is laborious.
The low-temperature rotary joint adopts a steel ball raceway structure, has large rotation resistance, is laborious to operate, and has short service life and difficult disassembly, assembly and maintenance.
Disclosure of Invention
The invention provides an arm pipe blowing anti-freezing low-temperature fluid loading arm, which adopts a sealing cavity structure to prevent air with water vapor from contacting with a bearing so as to prevent freezing; the residual low-temperature fluid in the arm pipe is completely loaded and unloaded by an arm pipe purging system; the rotary joint solves the problems that in the conventional rotary joint of the low-temperature fluid loading arm, nitrogen is required to be used for purging in order to prevent freezing, and a steel ball raceway structure is adopted, so that the rotary resistance is large and the service life is short.
The technical scheme of the invention is as follows:
the arm pipe sweeps the anti-freezing low-temperature fluid loading arm, including the upright post, gas phase arm and liquid phase arm are all connected on upright post side by side through anti-freezing low-temperature fluid rotary joint and rotary arm bearing bracket, gas phase arm and liquid phase arm all include rotary arm, rotary swing arm, linking arm, anti-freezing low-temperature fluid rotary joint, elbow bend, arm pipe sweep system, low-temperature snap-off valve and spring balancer, all connect in proper order through anti-freezing low-temperature fluid rotary joint between rotary arm and rotary swing arm, between rotary swing arm and the linking arm; the anti-freezing low-temperature fluid rotary joint comprises an end face sealing connecting flange, an outer sleeve, a rotary sealing positioning flange, a rotary pipe shaft, a sealing disc and a radial bearing, wherein the end face sealing connecting flange and the rotary sealing positioning flange are respectively detachably connected to the upper end and the lower end of the outer sleeve; the sealing disc is detachably connected to the upper end of the rotary tube shaft; radial bearings are arranged between the rotary pipe shaft and the outer sleeve, the end face sealing connecting flange, the outer sleeve, the rotary sealing positioning flange, the rotary pipe shaft, the sealing disc and the outer sleeve end face seal, the pipe shaft rotary seal, the rotary pipe shaft end face seal, the annular sealing ring, the end face inner rotary seal and the end face outer rotary seal are arranged between the rotary pipe shaft and the outer sleeve to form a sealing cavity, and the radial bearings are arranged in the sealing cavity.
Further, the arm pipe sweeps the anti-freezing low-temperature fluid loading arm, a semicircular clamping ring is coaxially arranged in an annular groove at the middle section of the rotary pipe shaft, a semicircular clamping ring positioning sleeve is sleeved outside the semicircular clamping ring, a bearing positioning sleeve is arranged between the end face sealing connecting flange and the outer ring of the radial bearing, and the bearing positioning sleeve is embedded in an inner hole of the outer sleeve; a thrust bearing is arranged between the semicircular clamping ring and the rotary sealing positioning flange, a shaft collar of the thrust bearing is sleeved on the rotary pipe shaft, the upper end face of the thrust bearing is limited on the lower end face of the semicircular clamping ring, and a seat ring of the thrust bearing is inlaid in a groove of the upper end face of the rotary sealing positioning flange.
Further, the arm pipe sweeps the anti-freezing low-temperature fluid loading arm, the number of the radial bearings is at least one group, and the radial bearings are arranged between the outer sleeve and the rotary pipe shaft, so that the outer sleeve and the rotary pipe shaft form rolling connection; the upper end face of the inner ring of the radial bearing at the upper part is limited on the lower end face of the sealing disc, the lower end face of the inner ring of the radial bearing at the lower part is limited on the upper end face of the semicircular clamping ring, and the upper end face of the outer ring of the radial bearing at the upper part is limited on the lower end face of the bearing positioning sleeve.
Further, the arm pipe sweeps the anti-freezing low-temperature fluid loading arm, wherein the upper end face of the sealing disk is provided with an annular groove, and a rotary sealing check ring in the end face is arranged in the annular groove; an end face inner rotary seal and/or an end face outer rotary seal are arranged between the end face sealing connecting flange and the sealing disc, the end face inner rotary seal is embedded in an inner hole of the end face inner rotary seal retainer ring, and the end face outer rotary seal is embedded in an inner hole of the bearing positioning sleeve; the rotary pipe shaft and the rotary seal positioning flange are coaxially sleeved on the rotary pipe shaft, and at least one pipe shaft is in rotary seal; tube shaft rotary sealing pressing rings are arranged in grooves of the upper end face and the lower end face of the rotary sealing positioning flange; a dust-proof ring frame flange is arranged in an annular groove at the lower end of the rotary seal positioning flange, and an inner hole of the dust-proof ring frame flange is provided with a pipe shaft dust-proof ring; the end face sealing connecting flange, the sealing disc and the rotary tube shaft are respectively provided with a fluid channel center hole which is communicated with each other, and the upper end part of the end face sealing connecting flange and the lower end part of the rotary tube shaft are respectively provided with a welding interface; the lower end face of the end face sealing connecting flange and the upper end face of the sealing disc are respectively provided with a stepped hole coaxial with the central hole of the sealing disc near the central hole of the sealing disc, and the annular sealing ring is embedded in the stepped hole; an outer sleeve end face seal is respectively arranged between the outer sleeve upper end and the end face seal connecting flange and between the outer sleeve lower end and the rotary seal positioning flange; the end face sealing connecting flange and the rotary sealing positioning flange are respectively connected with the two ends of the outer sleeve by a third fastener and a second fastener; the dustproof ring frame flange is connected to the lower end face of the rotary seal positioning flange through a first fastener.
Further, the arm pipe sweeps the anti-freezing low-temperature fluid loading arm, and the gas-phase arm and the liquid-phase arm both comprise five anti-freezing low-temperature fluid rotary joints and seven right-angle elbows; the tail end of the rotary arm is connected with the upper end of the anti-freezing low-temperature fluid rotary joint through a second elbow, the anti-freezing low-temperature fluid rotary joint is connected with a third anti-freezing low-temperature fluid rotary joint through a third elbow, the other end of the anti-freezing low-temperature fluid rotary joint is connected with the head end of the rotary swing arm through a fourth elbow, the anti-freezing low-temperature fluid rotary joint II and the anti-freezing low-temperature fluid rotary joint IV are plumb, and the anti-freezing low-temperature fluid rotary joint III and the anti-freezing low-temperature fluid rotary joint V are both arranged horizontally; the tail end of the rotary swing arm of the gas-phase arm is connected with the four upper ends of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow, so as to form a downward-turning structure gas-phase arm; the tail end of the rotary swing arm of the liquid phase arm is connected with the four lower ends of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow, so as to form an upturning structure liquid phase arm; the lower end of the anti-freezing low-temperature fluid rotary joint IV of the gas phase arm is connected with the anti-freezing low-temperature fluid rotary joint V through a elbow bend six; the upper end of the anti-freezing low-temperature fluid rotary joint IV of the liquid phase arm is connected with the anti-freezing low-temperature fluid rotary joint V through a elbow bend six; the other end of the anti-freezing low-temperature fluid rotary joint five is connected with the head end of the connecting arm through a right-angle elbow seven, and the tail end of the connecting arm is provided with a ring loose flange.
Further, the arm pipe sweeps anti-freezing low-temperature fluid loading arm, the rotary arm comprises a vertical shaft, a tee joint, an anti-freezing low-temperature fluid rotary joint, a rotary arm pipe and reinforcing rib plates, the vertical shaft, the tee joint, the rotary arm pipe and the reinforcing rib plates form a triangular stable structure, and the reinforcing rib plates form an upper structure on the rotary arm pipe.
Further, the arm pipe sweeps the anti-freezing cryogenic fluid loading arm, wherein the cryogenic breaking valve is respectively arranged on the rotary swing arm or the connecting arm of the gas-phase arm and the liquid-phase arm.
Further, the arm pipe sweeps anti-freezing cryogenic fluid loading arm, a gas-liquid phase arm folding fixing device is arranged on the upright post frame, the gas-liquid phase arm folding fixing device comprises a gas-liquid phase arm fixing device substrate, a gas-phase arm positioning column and a liquid phase arm positioning column, the gas-phase arm positioning column and the liquid phase arm positioning column are arranged on the gas-liquid phase arm fixing device substrate side by side from top to bottom, and the annular loose flange is respectively placed on the gas-phase arm positioning column and the liquid phase arm positioning column after the loading arm is folded.
Further, the arm pipe sweeps anti-freezing cryogenic fluid loading arm, the upright post frame with set up the arm lock mechanism between the revolving arm, the arm lock mechanism includes fixed lock seat, lockpin and moves the locking plate, and fixed lock seat sets up on the upright post frame, moves the locking plate setting on the revolving arm vertical scroll, and the lockpin setting is on fixed lock seat and passes the lockhole of moving the locking plate.
Further, the arm pipe sweeps anti-freezing low-temperature fluid loading arm, the arm pipe sweeps the system and includes main road low temperature shut-off valve, arm pipe sweeps air inlet subsystem and arm pipe sweeps air outlet subsystem respectively including arm pipe sweeps the standing elbow pipe, arm pipe sweeps the hose, arm pipe sweeps low temperature shut-off valve and arm pipe sweeps connecting elbow pipe and connects gradually, arm pipe sweeps connecting elbow pipe setting on the middle section arm pipe behind the main road low temperature shut-off valve, sweeps the standing elbow pipe setting on the stand.
The beneficial effects of the invention are as follows: the invention adopts the arm pipe purging system to purge the arm pipe with nitrogen so as to completely load and unload the residual low-temperature fluid in the arm pipe. The invention adopts the bearing structure to replace the steel ball pipeline structure, has small rotation resistance, flexible operation, long service life and convenient maintenance and disassembly; the gas-liquid phase arm folding and fixing device and the locking mechanism are arranged, so that the folding state of the loading arm is kept safe and neat when the loading arm does not work.
Drawings
FIG. 1 is a block diagram of an anti-freeze cryogenic fluid swivel;
FIG. 2 is a front view of an embodiment of an arm tube purge anti-freeze cryogenic fluid handler arm;
FIG. 3 is a top view of an embodiment of a arm tube purge freeze cryogenic fluid handler arm;
FIG. 4 is a block diagram of a column rack;
FIG. 5 is a front view of an embodiment of a gas phase arm;
FIG. 6 is a top view of an embodiment of a gas phase arm;
FIG. 7 is a front view of an embodiment of a liquid phase arm;
FIG. 8 is a top view of an embodiment of a liquid phase arm;
FIG. 9 is a front view of a second embodiment of an arm tube purge anti-freeze cryogenic fluid handler arm;
FIG. 10 is a top plan view of an embodiment of an arm tube purge anti-freeze cryogenic fluid handler arm;
FIG. 11 is a front view of a second embodiment of a gas phase arm;
FIG. 12 is a top plan view of a second embodiment of a gas phase arm;
FIG. 13 is a front view of a second embodiment of a liquid phase arm;
fig. 14 is a top view of a second embodiment of a liquid phase arm.
Detailed Description
Example 1
As shown in fig. 1-8, the arm pipe blowing anti-freezing cryogenic fluid loading arm comprises a column frame 1, a gas phase arm 2 and a liquid phase arm 3, wherein the gas phase arm 2 and the liquid phase arm 3 are connected on the column frame 1 side by side through an anti-freezing cryogenic fluid rotary joint I251 and a rotary arm bearing frame 214, the gas phase arm 2 and the liquid phase arm 3 respectively comprise a rotary arm 21, a rotary swing arm 22, a connecting arm 23, anti-freezing cryogenic fluid rotary joints I-V251-255, an arm pipe blowing system 28, a quarter bend I-V241-247, a low temperature breaking valve 27 and a spring balancer 26, and the gas phase arm 2, the rotary arm 21 and the rotary swing arm 22 of the liquid phase arm 3 and the connecting arm 23 are sequentially connected through anti-freezing cryogenic fluid rotary joints II-V252-255 and a quarter bend II-V242-V247;
the anti-freezing cryogenic fluid rotary joint comprises one to five 251 to 255, which respectively comprise an end face sealing connecting flange 2512, an outer sleeve 2505, a rotary sealing positioning flange 2503, a rotary tube shaft 2501, a sealing disk 2508, a radial bearing 2507 and a thrust bearing 2506, wherein the end face sealing connecting flange 2512 and the rotary sealing positioning flange 2503 are respectively and detachably connected with the upper end and the lower end of the outer sleeve 2505; the sealing disk 2508 is detachably connected to the upper end of the rotary tube shaft 2501; radial bearings 2506 are arranged between the rotary tube shaft 2501 and the outer sleeve 2505, and a sealing cavity is formed by an end face sealing connecting flange 2512, the outer sleeve 2505, a rotary sealing positioning flange 2503, the rotary tube shaft 201, a sealing disc 2508 and an outer sleeve end face sealing 2504, a tube shaft rotary sealing 2502, a rotary tube shaft end face sealing 2509 and an end face rotary sealing 2510 which are arranged between the end face sealing connecting flange 2512, the outer sleeve 2505 and the rotary sealing positioning flange 2503, and all bearings are arranged in the sealing cavity to prevent air with water vapor from contacting with rolling bodies so as to prevent freezing.
The rotary arm 21, the rotary swing arm 22 and the connecting arm 23 of the gas-phase arm 2 and the liquid-phase arm 3 are all horizontally arranged, the anti-freezing low-temperature fluid rotary joint II 2502 and the anti-freezing low-temperature fluid rotary joint IV 2504 are all plumb, and the anti-freezing low-temperature fluid rotary joint III 2503 and the anti-freezing low-temperature fluid rotary joint V2505 are all horizontally arranged.
The tail ends of the rotary arms 21 of the gas-phase arm 2 and the liquid-phase arm 3 are connected with the upper end port of the anti-freezing low-temperature fluid rotary joint II 2502 through a elbow II 242, and the anti-freezing low-temperature fluid rotary joint II 252 is connected with the anti-freezing low-temperature fluid rotary joint III 253 through an elbow III 243; the other end of the anti-freezing cryogenic fluid rotary joint three 253 is connected with the head end of the swing arm 22 through a quarter bend four 244.
The tail end of the rotary swing arm 22 of the gas-phase arm 2 is connected with the upper end of the anti-freezing cryogenic fluid rotary joint four 354 through a right-angle elbow five-connection 245, so that the gas-phase arm 2 with a downward turning structure is formed.
The tail end of the rotary swing arm 22 of the liquid phase arm 3 is connected with the lower end of the anti-freezing cryogenic fluid rotary joint IV 254 through a elbow bend V245, so as to form the liquid phase arm 3 with an upturning structure.
The lower end of the anti-freezing low-temperature fluid rotary joint IV 254 of the gas phase arm 2 is connected with the anti-freezing low-temperature fluid rotary joint V255 through a elbow bend VI 246; the upper end of the anti-freezing low-temperature fluid rotary joint IV 254 of the liquid phase arm 3 is connected with the anti-freezing low-temperature fluid rotary joint V255 through a elbow bend VI 246; the other end of the anti-freezing cryogenic fluid rotary joint five 255 is connected with the head end of the connecting arm 23 through a quarter bend seven 247, and the tail end of the connecting arm 23 is provided with a ring loose flange 231.
The rotary arms 21 of the gas-phase arm 2 and the liquid-phase arm 3 respectively comprise a vertical shaft 212, a tee joint 211, a first anti-freezing cryogenic fluid rotary joint 251, a rotary arm pipe 215 and a reinforcing rib plate 216, wherein the vertical shaft 212, the tee joint 211, the rotary arm pipe 215 and the reinforcing rib plate 216 form a triangular stable structure, and the reinforcing rib plate 216 forms an upper structure on the rotary arm pipe 215.
The low-temperature breaking valve 27 may be provided on the swing arm 22 or the connecting arm 23, and since the loading arm has no nitrogen purge line of the low-temperature rotary joint, there is no influence of the nitrogen line when the low-temperature breaking valve breaks due to malfunction, and all the low-temperature breaking valves may be provided on the swing arm.
The upright post frame 1 is provided with a gas-liquid phase arm folding and fixing device 13, which comprises a gas-liquid phase arm fixing device substrate 131, a gas phase arm positioning column 132 and a liquid phase arm positioning column 133, wherein the gas phase arm positioning column 132 and the liquid phase arm positioning column 133 are arranged on the gas-liquid phase arm fixing device substrate 131 side by side up and down, and after the loading and unloading arm is folded, a ring loose flange 231 at the tail end of the connecting arm 23 is respectively arranged on the gas phase arm positioning column 132 and the liquid phase arm positioning column 133, so that the folding state is kept safe and neat when the loading and unloading arm does not work.
The arm lock mechanisms 4 are respectively arranged between the upright post frame 1 and the rotary arms 21 of the gas-phase arm 2 and the liquid-phase arm 3, each arm lock mechanism 4 comprises a fixed lock seat 11, a lock pin 12 and a movable lock plate 213, the fixed lock seat 11 is arranged on the upright post frame 1, the movable lock plate 213 is arranged on a vertical shaft 212 of the rotary arm 21, the lock pin 12 is arranged on the fixed lock seat 11 and can pass through a lock hole of the movable lock plate 212, and when the arm lock mechanisms 4 are in a locking state, the rotary arm 21 is fixed in a furling state and can not rotate, so that the loading and unloading arms are safe and tidy.
The gas-phase arm 2 and the liquid-phase arm 3 are respectively provided with an arm pipe purging system 28, the arm pipe purging system 28 comprises a main low Wen Guanduan valve 221, an arm pipe purging air inlet subsystem 281 and an arm pipe purging air outlet subsystem 282, the arm pipe purging air inlet subsystem 281 and the arm pipe purging air outlet subsystem 282 respectively comprise an arm pipe purging vertical bent pipe 2811, an arm pipe purging hose 2812, an arm pipe purging low Wen Guanduan valve 2813 and an arm pipe purging connecting bent pipe 2814, and the arm pipe purging connecting bent pipe 2814 is sequentially connected and arranged on a rotary swing arm behind the main low Wen Guanduan valve 221, and the arm pipe purging vertical bent pipe 2811 is arranged on the vertical column frame 1.
Example 2
As shown in fig. 9 to 14, the difference from embodiment 1 is that: the low temperature break valve 27 is provided on the connecting arm 23, and the rest is the same.
Description:
1. the anti-freezing low-temperature fluid rotary joints one to five 251 to 255 have the same structure;
2. the first to seventh 241 to 247 of the right-angle bends have the same structure;
for convenience of description, the above components are denoted by different reference numerals.
Claims (8)
1. The arm pipe blowing anti-freezing low-temperature fluid loading and unloading arm is characterized by comprising a stand column frame, a gas phase arm and a liquid phase arm, wherein the gas phase arm and the liquid phase arm are connected on the stand column frame side by side through an anti-freezing low-temperature fluid rotary joint and a rotary arm bearing frame, the gas phase arm and the liquid phase arm comprise a rotary arm, a rotary swing arm, a connecting arm, an anti-freezing low-temperature fluid rotary joint, a right-angle elbow, an arm pipe blowing system, a low-temperature breaking valve and a spring balancer, and the rotary arm and the rotary swing arm are sequentially connected through the anti-freezing low-temperature fluid rotary joint;
the anti-freezing low-temperature fluid rotary joint comprises an end face sealing connecting flange, an outer sleeve, a rotary sealing positioning flange, a rotary pipe shaft, a sealing disc and a radial bearing, wherein the end face sealing connecting flange and the rotary sealing positioning flange are respectively detachably connected to the upper end and the lower end of the outer sleeve; the sealing disc is detachably connected to the upper end of the rotary tube shaft; a radial bearing is arranged between the rotary pipe shaft and the outer sleeve, the end face seal connecting flange, the outer sleeve, the rotary seal positioning flange, the rotary pipe shaft, the sealing disc and the outer sleeve end face seal between the rotary pipe shaft and the outer sleeve, the pipe shaft rotary seal, the rotary pipe shaft end face seal, the annular sealing ring, the end face inner rotary seal and the end face outer rotary seal form a sealing cavity, and the radial bearing is arranged in the sealing cavity;
an annular groove is formed in the upper end face of the sealing disc, and a rotary sealing retainer ring in the end face is arranged in the annular groove; an end face inner rotary seal and/or an end face outer rotary seal are arranged between the end face sealing connecting flange and the sealing disc, the end face inner rotary seal is embedded in an inner hole of the end face inner rotary seal retainer ring, and the end face outer rotary seal is embedded in an inner hole of the bearing positioning sleeve; the rotary pipe shaft and the rotary seal positioning flange are coaxially sleeved on the rotary pipe shaft, and at least one pipe shaft is in rotary seal; tube shaft rotary sealing pressing rings are arranged in grooves of the upper end face and the lower end face of the rotary sealing positioning flange; a dust-proof ring frame flange is arranged in an annular groove at the lower end of the rotary seal positioning flange, and an inner hole of the dust-proof ring frame flange is provided with a pipe shaft dust-proof ring; the end face sealing connecting flange, the sealing disc and the rotary tube shaft are respectively provided with a fluid channel center hole which is communicated with each other, and the upper end part of the end face sealing connecting flange and the lower end part of the rotary tube shaft are respectively provided with a welding interface; the lower end face of the end face sealing connecting flange and the upper end face of the sealing disc are respectively provided with a stepped hole coaxial with the central hole of the sealing disc near the central hole of the sealing disc, and the annular sealing ring is embedded in the stepped hole; an outer sleeve end face seal is respectively arranged between the outer sleeve upper end and the end face seal connecting flange and between the outer sleeve lower end and the rotary seal positioning flange; the end face sealing connecting flange and the rotary sealing positioning flange are respectively connected with the two ends of the outer sleeve by a third fastener and a second fastener; the dustproof ring frame flange is connected to the lower end surface of the rotary sealing positioning flange by a first fastener;
the rotary arm comprises a vertical shaft, a tee joint, an anti-freezing low-temperature fluid rotary joint, a rotary arm pipe and a reinforcing rib plate, wherein the vertical shaft, the tee joint, the rotary arm pipe and the reinforcing rib plate form a triangular stable structure, and the reinforcing rib plate forms an upper structure on the rotary arm pipe.
2. The arm pipe purging anti-freezing low-temperature fluid loading arm according to claim 1, wherein a semicircular clamping ring is coaxially arranged in an annular groove in the middle section of the rotary pipe shaft, a semicircular clamping ring positioning sleeve is sleeved outside the semicircular clamping ring, a bearing positioning sleeve is arranged between an end face sealing connecting flange and an outer ring of a radial bearing, and the bearing positioning sleeve is embedded in an inner hole of an outer sleeve; a thrust bearing is arranged between the semicircular clamping ring and the rotary sealing positioning flange, a shaft collar of the thrust bearing is sleeved on the rotary pipe shaft, the upper end face of the thrust bearing is limited on the lower end face of the semicircular clamping ring, and a seat ring of the thrust bearing is inlaid in a groove of the upper end face of the rotary sealing positioning flange.
3. The arm pipe purge anti-freeze cryogenic fluid handling arm of claim 2, wherein the number of radial bearings is at least one, the radial bearings being disposed between the outer sleeve and the spin spool such that the outer sleeve and spin spool form a rolling connection; the upper end face of the inner ring of the radial bearing at the upper part is limited on the lower end face of the sealing disc, the lower end face of the inner ring of the radial bearing at the lower part is limited on the upper end face of the semicircular clamping ring, and the upper end face of the outer ring of the radial bearing at the upper part is limited on the lower end face of the bearing positioning sleeve.
4. The arm pipe purge anti-freeze cryogenic fluid handling arm of claim 1, wherein the gas phase arm and the liquid phase arm each comprise five anti-freeze cryogenic fluid swivel joints and seven right angle bends; the tail end of the rotary arm is connected with the upper end of the anti-freezing low-temperature fluid rotary joint through a second elbow bend, and the second anti-freezing low-temperature fluid rotary joint is connected with a third elbow bend; the other end of the anti-freezing low-temperature fluid rotary joint III is connected with the first end of the rotary swing arm through a quarter bend IV, the anti-freezing low-temperature fluid rotary joint II and the anti-freezing low-temperature fluid rotary joint IV are arranged in a plumb manner, and the anti-freezing low-temperature fluid rotary joint III and the anti-freezing low-temperature fluid rotary joint V are horizontally arranged; the tail end of the rotary swing arm of the gas-phase arm is connected with the four upper ends of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow, so as to form a downward-turning structure gas-phase arm; the tail end of the rotary swing arm of the liquid phase arm is connected with the four lower ends of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow, so as to form an upturning structure liquid phase arm; the lower end of the anti-freezing low-temperature fluid rotary joint IV of the gas phase arm is connected with the anti-freezing low-temperature fluid rotary joint V through a elbow bend six; the upper end of the anti-freezing low-temperature fluid rotary joint IV of the liquid phase arm is connected with the anti-freezing low-temperature fluid rotary joint V through a elbow bend six; the other end of the anti-freezing low-temperature fluid rotary joint five is connected with the head end of the connecting arm through a right-angle elbow seven, and the tail end of the connecting arm is provided with a ring loose flange.
5. The arm pipe purge anti-freeze cryogenic fluid handling arm of claim 1, wherein the cryogenic snap-off valve is disposed on a swivel swing arm or a link arm of the gas phase arm and the liquid phase arm, respectively.
6. The arm pipe purging anti-freezing cryogenic fluid loading arm according to claim 4, wherein a gas-liquid phase arm folding and fixing device is arranged on the upright post frame, the gas-liquid phase arm folding and fixing device comprises a gas-liquid phase arm fixing device substrate, a gas-phase arm positioning column and a liquid phase arm positioning column, the gas-phase arm positioning column and the liquid phase arm positioning column are arranged on the gas-liquid phase arm fixing device substrate side by side from top to bottom, and the annular loose flange is respectively placed on the gas-phase arm positioning column and the liquid phase arm positioning column after loading arm folding.
7. The arm pipe purge anti-freeze cryogenic fluid handling arm of claim 1, wherein an arm lock mechanism is disposed between the upright post frame and the swivel arm, the arm lock mechanism comprising a fixed lock base disposed on the upright post frame, a locking pin disposed on the fixed lock base and passing through a locking hole of the locking pin, and a movable locking plate disposed on a vertical shaft of the swivel arm.
8. The boom pipe purging anti-freezing cryogenic fluid loading arm according to claim 1, wherein the boom pipe purging system comprises a main low-temperature shut-off valve, a boom pipe purging air inlet subsystem and a boom pipe purging air outlet subsystem, the boom pipe purging air inlet subsystem and the boom pipe purging air outlet subsystem respectively comprise a boom pipe purging vertical bent pipe, a boom pipe purging hose, a boom pipe purging low-temperature shut-off valve and a boom pipe purging connecting bent pipe which are sequentially connected, the boom pipe purging connecting bent pipe is arranged on a middle-section boom pipe behind the main low-temperature shut-off valve, and the purging vertical bent pipe is arranged on the upright post frame.
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| CN201910363148.4A CN110005941B (en) | 2019-04-30 | 2019-04-30 | Arm pipe purging anti-freezing low-temperature fluid loading and unloading arm |
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| CN113958876B (en) * | 2021-10-25 | 2022-08-02 | 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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