CN109973815B - Anti-freezing cryogenic fluid unloading arm with three-branch support arm pipe sweeping function - Google Patents
Anti-freezing cryogenic fluid unloading arm with three-branch support arm pipe sweeping function Download PDFInfo
- Publication number
- CN109973815B CN109973815B CN201910363151.6A CN201910363151A CN109973815B CN 109973815 B CN109973815 B CN 109973815B CN 201910363151 A CN201910363151 A CN 201910363151A CN 109973815 B CN109973815 B CN 109973815B
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- arm
- rotary
- face
- pipe
- sealing
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Links
- 239000012530 fluid Substances 0.000 title claims abstract description 125
- 238000007710 freezing Methods 0.000 title claims abstract description 90
- 238000010408 sweeping Methods 0.000 title description 2
- 239000007791 liquid phase Substances 0.000 claims abstract description 65
- 239000012071 phase Substances 0.000 claims abstract description 53
- 238000010926 purge Methods 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims description 81
- 238000007664 blowing Methods 0.000 claims description 28
- 108010053481 Antifreeze Proteins Proteins 0.000 claims description 22
- 230000002528 anti-freeze Effects 0.000 claims description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000000758 substrate Substances 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 8
- 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
- 239000007789 gas Substances 0.000 abstract description 25
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 24
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 12
- 238000012423 maintenance Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- 239000003949 liquefied natural gas Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000009834 vaporization 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
- F17C9/00—Methods or apparatus for discharging liquefied or solidified gases from vessels not under pressure
-
- 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
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/011—Oxygen
-
- 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
- F17C2221/01—Pure fluids
- F17C2221/014—Nitrogen
-
- 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
-
- 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
- F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- 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
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0146—Two-phase
- F17C2225/0153—Liquefied gas, e.g. LPG, GPL
- F17C2225/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
-
- 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
- F17C2227/01—Propulsion of the fluid
- F17C2227/0192—Propulsion of the fluid by using a working fluid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention belongs to the field of low-temperature fluid loading and unloading equipment, and particularly relates to a three-branch support arm pipe purging anti-freezing low-temperature fluid unloading arm. The technical proposal is as follows: the device comprises a stand column frame, a gas phase arm, a liquid phase arm and a pressurizing arm, wherein the gas phase arm, the liquid phase arm and the pressurizing arm are all 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, the liquid phase arm and the pressurizing arm all 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 purging 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 has the advantages that the gas phase arm, the liquid phase arm and the pressurizing arm are arranged, the arm pipe is provided with the nitrogen purging system, the low-temperature rotary joint does not have nitrogen purging and does not freeze, the rotation resistance is small, the operation is flexible, the service life is long, and the maintenance and the disassembly are convenient.
Description
Technical Field
The invention belongs to the field of low-temperature fluid loading and unloading equipment, and particularly relates to a three-branch support arm pipe purging anti-freezing low-temperature fluid unloading arm.
Background
At present, in the unloading of liquefied low-temperature fluids such as liquid nitrogen, liquid oxygen, liquefied natural gas and the like, two-support arm unloading equipment with a gas-phase arm and a liquid-phase arm is used, the liquid-phase arm connecting tank truck and a liquid unloading pipeline are used for conveying the liquefied low-temperature fluids, and the gas-phase arm connecting tank truck is used for pressurizing the tank truck by the upper part of the gas-phase arm connecting tank truck and a pressure gas source pipeline. In the situation without a pressure air source, liquefied low-temperature fluid of the transport tank truck is vaporized by the booster to generate pressure air as an air source, so that the third support arm is required to be connected with the tank truck and the booster, and the two support arm loading and unloading equipment is only suitable for unloading in the situation with the pressure air source and cannot meet the requirement of the situation without the pressure air source. However, at present, there is no three-branch loading arm which is suitable for unloading by utilizing liquefied low-temperature fluid of a transport tank truck to generate pressure gas through vaporization of a booster as an air source;
the low-temperature fluid rotary joint applied to the field of low-temperature fluid equipment adopts a steel ball raceway structure, has large rotation resistance and short service life, and is difficult to disassemble, assemble and maintain;
the steel ball rollaway nest of the rotary joint of the low-temperature fluid is communicated with the outside through gaps among the parts, in order to prevent water vapor in the air from entering the rotary joint through the gaps on the rotary joint to freeze and prevent the rotary joint from rotating, the rotary joint is provided with a nitrogen purging system, and nitrogen is required to be continuously purged to the steel ball rollaway nest part inside the rotary joint during the process that the low-temperature fluid passes through the loading arm, so that the air cannot enter the rotary joint.
Disclosure of Invention
The invention provides a three-branch support arm pipe purging anti-freezing low-temperature fluid unloading arm which is provided with a gas phase arm, a liquid phase arm and a pressurizing arm, wherein the arm pipe is provided with a nitrogen purging system, the low-temperature rotary joint does not have nitrogen purging and does not freeze, and the three-branch support arm pipe purging anti-freezing low-temperature fluid unloading arm is small in rotation resistance, flexible to operate, long in service life and convenient to maintain and disassemble.
The technical scheme of the invention is as follows:
the three-branch support arm pipe blowing anti-freezing low-temperature fluid unloading arm comprises a column frame, a gas phase arm, a liquid phase arm and a pressurizing arm, wherein the gas phase arm, the liquid phase arm and the pressurizing arm are all connected on the column frame side by side through an anti-freezing low-temperature fluid rotary joint and a rotary arm bearing frame, the gas phase arm, the liquid phase arm and the pressurizing arm comprise rotary arms, rotary swing arms, connecting arms, anti-freezing low-temperature fluid rotary joints, right-angle elbows, an arm pipe blowing system, a low-temperature breaking valve and a spring balancer, and the rotary arms and the rotary swing arms and the connecting arms are all connected in sequence through the anti-freezing low-temperature fluid rotary joints; 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 three-branch support arm pipe sweeps the anti-freezing low-temperature fluid unloading arm, 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 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 three-branch support arm pipe sweeps the anti-freezing low-temperature fluid unloading arm, the number of the radial bearings is at least one group, and the radial bearings are arranged between the outer sleeve and the rotating pipe shaft, so that the outer sleeve and the rotating 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 three-branch support arm pipe sweeps the anti-freezing low-temperature fluid unloading arm, the upper end surface of the sealing disk is provided with an annular groove, and a rotary sealing check ring in the end surface 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 three-branch support arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, wherein the gas phase arm, the liquid phase arm and the pressurizing arm all comprise five anti-freezing cryogenic 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 ends of the rotary swing arms of the liquid-phase arm and the pressurizing arm are connected with the four lower ends of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow, so that an upturning structure liquid-phase arm and an upturning structure pressurizing arm are respectively formed; 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 ends of the anti-freezing low-temperature fluid rotary joints IV of the liquid phase arm and the pressurizing arm are 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 three-branch support arm pipe sweeps the anti-freezing low-temperature fluid unloading arm, wherein the gas phase arm, the liquid phase arm and the rotary arm of the pressurizing arm respectively comprise a vertical shaft, a tee joint, an anti-freezing low-temperature fluid rotary joint I, a rotary arm pipe and a reinforcing rib plate, the vertical shaft, the tee joint, the rotary arm pipe and the reinforcing rib plate form a triangular stable structure, the reinforcing rib plates of the gas phase arm and the liquid phase arm form an upper structure on the rotary arm pipe, and the reinforcing rib plate of the pressurizing arm forms a lower structure below the rotary arm pipe.
Further, the three-branch arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, wherein the cryogenic breaking valve is respectively arranged on the rotary swing arm or the connecting arm of the gas-phase arm, the liquid-phase arm and the pressurizing arm.
Further, the three-branch support arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, wherein a gas-liquid phase arm folding and fixing device and a pressurizing arm folding and fixing device are 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, and 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 up and down; the supercharging arm folding and fixing device comprises a supercharging arm fixing device substrate and a supercharging arm positioning column, wherein the supercharging arm positioning column is arranged on the supercharging arm fixing device substrate.
Further, the three-branch support arm pipe sweeps anti-freezing cryogenic fluid unloading arm, wherein 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 sets up on fixed lock seat and can pass the lockhole of moving the locking plate.
Further, the three-branch support arm pipe blowing anti-freezing low-temperature fluid unloading arm, wherein the arm pipe blowing system comprises a main path low-temperature shutoff valve, an arm pipe blowing air inlet subsystem and an arm pipe blowing air outlet subsystem, the arm pipe blowing air inlet subsystem and the arm pipe blowing air outlet subsystem respectively comprise an arm pipe blowing vertical bent pipe, an arm pipe blowing hose, an arm pipe blowing low-temperature shutoff valve and an arm pipe blowing connecting bent pipe which are sequentially connected, and the arm pipe blowing connecting bent pipe is arranged on a rotary swing arm and is positioned behind the main path low-temperature shutoff valve.
Further, the three-branch arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, wherein the pressurizing arm is arranged at the bottom or the middle position.
The beneficial effects of the invention are as follows: the invention is provided with the gas phase arm, the liquid phase arm and the pressurizing arm, and is suitable for the occasion of unloading by utilizing the pressurized gas generated by vaporizing the liquefied low-temperature fluid of the transport tank truck through the pressurizer; the low-temperature fluid rotary joint has no nitrogen purging and no freezing, and nitrogen and supply equipment and a pipeline system thereof are saved; the bearing structure is adopted to replace the steel ball raceway structure, so that the rotation resistance is small, the service life is long, and the disassembly, the assembly and the maintenance are convenient; the arm pipe purging system purges the arm pipe with nitrogen to completely unload residual low-temperature fluid in the arm pipe; the gas-liquid phase arm folding and fixing device and the arm locking mechanism are arranged, so that the folding state is kept safe and neat when the loading and unloading 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 a three-part arm tube purge anti-freeze cryogenic fluid unloading arm;
FIG. 3 is a top view of an embodiment of a three-part arm tube purge anti-freeze cryogenic fluid unloading arm;
FIG. 4 is a block diagram of an upright of an embodiment of a three-arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 5 is a front view of an air phase arm of an embodiment of a three-part arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 6 is a top view of an air phase arm of an embodiment of a three-arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 7 is a front view of a liquid phase arm of an embodiment of a three-arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 8 is a top view of a liquid phase arm of an embodiment of a three-arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 9 is a front view of a booster arm of an embodiment of a three-part arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 10 is a top view of a booster arm of an embodiment of a three-arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 11 is a front view of a second embodiment of a three-part arm tube purge anti-freeze cryogenic fluid unloading arm;
FIG. 12 is a top plan view of a second embodiment of a three-part arm tube purge anti-freeze cryogenic fluid unloading arm;
FIG. 13 is a front view of a second gas phase arm of a three-part arm tube purge anti-freeze cryogenic fluid unloading arm embodiment;
FIG. 14 is a top view of a second gas phase arm of an embodiment of a three-arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 15 is a front view of a two liquid phase arm of a three-split arm tube purge anti-freeze cryogenic fluid unloading arm embodiment;
FIG. 16 is a top view of a two liquid phase arm of an embodiment of a three-arm tube purge anti-freeze cryogenic fluid discharge arm;
FIG. 17 is a front view of a second booster arm of a three-part arm tube purge anti-freeze cryogenic fluid discharge arm embodiment;
FIG. 18 is a top view of a second booster arm of a three-part arm tube purge anti-freeze cryogenic fluid discharge arm embodiment.
Detailed Description
Example 1
As shown in fig. 1-10, the three-branch arm pipe blowing anti-freezing cryogenic fluid unloading arm comprises a upright post frame 1, a gas phase arm 2, a liquid phase arm 3 and a pressurizing arm 5, wherein the gas phase arm 2, the liquid phase arm 3 and the pressurizing arm 5 are all connected on the upright post frame 1 side by side through an anti-freezing cryogenic fluid rotary joint 251 and a rotary arm bearing frame 214, the pressurizing arm 5 is arranged at the bottom or middle position, the gas phase arm 2, the liquid phase arm 3 and the pressurizing arm 5 respectively comprise a rotary arm 21, a rotary swing arm 22, a connecting arm 23, an anti-freezing cryogenic fluid rotary joint one-five 251-255, a first quarter bend 241-247, a low-temperature stretch-breaking valve 27, a spring balancer 26 and an arm pipe blowing system 28, and the gas phase arm 2, the liquid phase arm 3 and the pressurizing arm 5 are all connected between the rotary arm 21 and the rotary swing arm 22 and between the connecting arm 23 in sequence through an anti-freezing cryogenic fluid rotary joint two-five 252-255 and a second quarter bend 242-247.
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, the liquid-phase arm 3 and the pressurizing arm 5 are all horizontally arranged, the anti-freezing low-temperature fluid rotary joint two 252 and the anti-freezing low-temperature fluid rotary joint four 254 are both plumb, and the anti-freezing low-temperature fluid rotary joint three 253 and the anti-freezing low-temperature fluid rotary joint five 255 are both horizontally arranged.
The tail ends of the rotary arms 21 of the gas-phase arm 2, the liquid-phase arm 3 and the pressurizing arm 5 are connected with the upper end opening of the anti-freezing low-temperature fluid rotary joint II 252 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 opening of the fourth 254 anti-freezing cryogenic fluid rotary joint through a fifth elbow 245, so as to form the gas-phase arm 2 with a downward turning structure.
The tail ends of the rotary swing arms 22 of the liquid-phase arm 3 and the pressurizing arm 5 are connected with the lower end port of the fourth 254 anti-freezing cryogenic fluid rotary joint through a fifth elbow 245, so that the upward-turning structure liquid-phase arm 3 and the upward-turning structure pressurizing arm are formed.
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 ends of the anti-freezing low-temperature fluid rotary joints IV 254 of the liquid-phase arm 3 and the pressurizing arm 5 are connected with the anti-freezing low-temperature fluid rotary joint V255 through a elbow bend V246; 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 gas-phase arm 2, the liquid-phase arm 3 and the rotary arm 21 of the pressurizing arm 5 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, the vertical shaft 212, the tee joint 211, the rotary arm pipe 215 and the reinforcing rib plate 216 form a triangular stable structure, the reinforcing rib plates 216 of the gas-phase arm 2 and the liquid-phase arm 3 form an upper structure on the rotary arm pipe 215, and the reinforcing rib plates 216 of the pressurizing arm 5 form a lower structure below the rotary arm pipe 215.
The low-temperature breaking valves 27 may be respectively provided on the swing arms 22 of the gas-phase arm 2, the liquid-phase arm 3, and the pressurizing arm 5, or may be respectively provided on the connecting arm 23, and since the loading and unloading 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 valves 27 are broken by malfunction, all the low-temperature breaking valves may be provided on the swing arms 22.
The upright post frame 1 is provided with a gas-liquid phase arm folding and fixing device 13 and a pressurizing arm folding and fixing device 14, the gas-liquid phase arm folding and fixing device 13 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, and 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; the booster arm folding and fixing device 14 comprises a booster arm fixing device substrate 141 and a booster arm positioning column 142, wherein the booster arm positioning column 142 is arranged on the booster arm fixing device substrate 141.
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, the liquid-phase arm 3 and the pressurizing arm 5, each arm lock mechanism 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 the vertical shaft 212 of the rotary arm 21, the lock pin 12 is arranged on the fixed lock seat 11 and can pass through the lock hole of the movable lock plate 213, 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, the liquid-phase arm and the pressurizing arm 5 are all provided with an arm pipe purging system 28, the arm pipe purging system 28 mainly 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 2822, an arm pipe purging low Wen Guanduan valve 2813 and an arm pipe purging connecting bent pipe 2814, and are sequentially connected, the arm pipe purging connecting bent pipe 2814 is arranged on the rotary swing arm 22 and is positioned 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. 11 to 18, 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 three-branch support arm pipe blowing anti-freezing low-temperature fluid unloading arm is characterized by comprising a stand column frame, a gas phase arm, a liquid phase arm and a pressurizing arm, wherein the gas phase arm, the liquid phase arm and the pressurizing arm are all connected on the stand column frame side by side through an anti-freezing low-temperature fluid rotary joint and a rotary arm bearing frame, and the gas phase arm, the liquid phase arm and the pressurizing arm comprise rotary arms, rotary swing arms, connecting arms, anti-freezing low-temperature fluid rotary joints, right-angle elbows, an arm pipe blowing system, a low-temperature breaking valve and a spring balancer, and the rotary arms and the rotary swing arms and the connecting arms are all connected in sequence through the anti-freezing low-temperature fluid rotary joints;
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 is in sealing connection with the 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 circular ring seal, 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, the radial bearing is arranged in the sealing cavity, the upper end face of the sealing disc is provided with an annular groove, and an end face inner rotary sealing check ring 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 arm pipe blowing system comprises a main low-temperature shutoff valve, an arm pipe blowing air inlet subsystem and an arm pipe blowing air outlet subsystem, wherein the arm pipe blowing air inlet subsystem and the arm pipe blowing air outlet subsystem respectively comprise an arm pipe blowing vertical bent pipe, an arm pipe blowing hose, an arm pipe blowing low-temperature shutoff valve and an arm pipe blowing connecting bent pipe which are connected in sequence, the arm pipe blowing connecting bent pipe is arranged on a rotary swing arm and is positioned behind the main low-temperature shutoff valve, and the arm pipe blowing vertical bent pipe is arranged on the upright post.
2. The purging anti-freezing low-temperature fluid unloading arm of the three-branch support arm pipe according to claim 1, wherein 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 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 three-arm tube purge anti-freeze cryogenic fluid unloading 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 rotating tube shaft such that the outer sleeve and the rotating tube shaft 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 three-arm tube purge anti-freeze cryogenic fluid unloading arm of claim 1, wherein the gas phase arm, the liquid phase arm, and the pressurization 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, 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 ends of the rotary swing arms of the liquid-phase arm and the pressurizing arm are connected with the four lower ends of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow, so that an upturning structure liquid-phase arm and an upturning structure pressurizing arm are respectively formed; 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 ends of the anti-freezing low-temperature fluid rotary joints IV of the liquid phase arm and the pressurizing arm are 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 three-branch arm pipe purging anti-freezing cryogenic fluid unloading arm according to claim 1, wherein the gas-phase arm, the liquid-phase arm and the rotary arm of the pressurizing arm respectively comprise a vertical shaft, a tee joint, an anti-freezing cryogenic fluid rotary joint I, a rotary arm pipe and a reinforcing rib plate, the vertical shaft, the tee joint, the rotary arm pipe and the reinforcing rib plate form a triangular stable structure, the reinforcing rib plates of the gas-phase arm and the liquid-phase arm form an upper structure on the rotary arm pipe, and the reinforcing rib plates of the pressurizing arm form a lower structure below the rotary arm pipe.
6. The three-arm tube purge anti-freeze cryogenic fluid unloading 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, the liquid phase arm, and the pressurization arm, respectively.
7. The three-branch arm pipe purging anti-freezing cryogenic fluid unloading arm according to claim 1, wherein a gas-liquid phase arm folding and fixing device and a pressurizing arm folding and fixing device are 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 post and a liquid phase arm positioning post, and the gas phase arm positioning post and the liquid phase arm positioning post are arranged on the gas-liquid phase arm fixing device substrate side by side from top to bottom; the supercharging arm folding and fixing device comprises a supercharging arm fixing device substrate and a supercharging arm positioning column, wherein the supercharging arm positioning column is arranged on the supercharging arm fixing device substrate.
8. The three-arm pipe purge anti-freezing cryogenic fluid unloading arm according to claim 1, wherein an arm lock mechanism is arranged between the upright post frame and the rotary arm, the arm lock mechanism comprises a fixed lock seat, a lock pin and a movable lock plate, the fixed lock seat is arranged on the upright post frame, the movable lock plate is arranged on a vertical shaft of the rotary arm, and the lock pin is arranged on the fixed lock seat and can pass through a lock hole of the movable lock plate.
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| CN201910363151.6A CN109973815B (en) | 2019-04-30 | 2019-04-30 | Anti-freezing cryogenic fluid unloading arm with three-branch support arm pipe sweeping function |
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| CN110726038A (en) * | 2019-10-14 | 2020-01-24 | 中海石油气电集团有限责任公司 | Special handheld online repair purging system for cold insulation structure of LNG pipeline |
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