CN209782219U - Three-branch arm pipe purging anti-freezing low-temperature fluid unloading arm - Google Patents
Three-branch arm pipe purging anti-freezing low-temperature fluid unloading arm Download PDFInfo
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- CN209782219U CN209782219U CN201920618281.5U CN201920618281U CN209782219U CN 209782219 U CN209782219 U CN 209782219U CN 201920618281 U CN201920618281 U CN 201920618281U CN 209782219 U CN209782219 U CN 209782219U
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Abstract
The utility model belongs to low temperature fluid handling equipment field, concretely relates to three branch arm pipes sweep anti-freezing low temperature fluid unloading arm. The technical scheme is as follows: the device 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 connected to 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 respectively 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, and the rotary swing arm and the connecting arm are connected in sequence through the anti-freezing low-temperature fluid rotary joint. The utility model discloses have gaseous phase arm, liquid phase arm and pressure boost arm and arm pipe and have nitrogen gas purging system, and low temperature rotary joint does not have nitrogen gas to sweep and does not take place to freeze, and the rotation resistance is little, flexible operation, long service life, maintenance easy dismounting moreover.
Description
Technical Field
the utility model belongs to low temperature fluid handling equipment field, concretely relates to three branch arm pipes sweep anti-freezing low temperature fluid unloading arm.
Background
At present, in the unloading of liquefied cryogenic fluids such as liquid nitrogen, liquid oxygen, liquefied natural gas and the like, a two-support-arm unloading device with a gas phase arm and a liquid phase arm is used, the liquid phase arm connecting groove tank car and a liquid unloading pipeline are used for conveying the liquefied cryogenic fluids, and the upper part of the gas phase arm connecting groove tank car and a pressure gas source pipeline are used for pressurizing the tank car. In the occasion without a pressure air source, the liquefied low-temperature fluid of the transport tank car is vaporized by the supercharger to generate pressure gas as the air source, so that a third support arm is needed to connect the tank car with the supercharger, and the two-support arm loading and unloading equipment is only suitable for unloading in the occasion with the pressure air source and cannot meet the requirement in the occasion without the pressure air source. However, at present, a three-branch loading and unloading arm which is suitable for unloading the liquefied cryogenic fluid of the transport tank car by using pressure gas generated by vaporization of a supercharger as a gas source does not exist;
the low-temperature fluid rotary joint applied in the field of low-temperature fluid equipment adopts a steel ball raceway structure, has large rotation resistance, short service life and difficult disassembly, assembly and maintenance;
the steel ball raceway of the low-temperature fluid rotary joint is communicated with the outside through gaps among parts, and in order to prevent water vapor in air from entering the inside through the gaps on the steel ball raceway and being frozen to cause incapability of rotating, the rotary joint is provided with a nitrogen purging system, and during the period that the low-temperature fluid passes through the loading and unloading arm, the steel ball raceway in the rotary joint must be continuously purged by nitrogen, so that the air cannot enter the inside.
SUMMERY OF THE UTILITY MODEL
The utility model provides a three-branch arm pipe sweeps anti-freezing cryogenic fluid arm of unloading has gaseous phase arm, liquid phase arm and pressure boost arm and arm pipe and has nitrogen gas purging system, and low temperature rotary joint does not have nitrogen gas to sweep and does not take place to freeze, and the rotational resistance is little moreover, flexible operation, long service life, maintenance easy dismounting.
The technical scheme of the utility model as follows:
The three-branch arm pipe purging 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 connected to the column frame in parallel through anti-freezing low-temperature fluid rotary joints and a rotary arm bearing frame; 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 tubular 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 rotating pipe shaft; the rotary pipe shaft with set up radial bearing between the overcoat, end face seal flange, overcoat, rotary seal locating flange, rotary pipe shaft, sealed dish and between them overcoat end face seal, hollow shaft rotary seal, rotary pipe shaft end face seal, ring seal circle, end face internal rotation seal, the outer rotary seal of end face constitute sealed chamber, radial bearing sets up sealed intracavity.
Furthermore, the three-branch arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, a semicircular snap ring is coaxially arranged in an annular groove in the middle section of the rotating pipe shaft, a semicircular snap ring positioning sleeve is sleeved outside the semicircular snap ring, a bearing positioning sleeve is arranged between the end face sealing connecting flange and the radial bearing outer ring, and the bearing positioning sleeve is embedded in an inner hole of the outer sleeve; set up thrust bearing between semicircle snap ring and the rotary seal locating flange, thrust bearing's shaft collar cover is on rotatory hollow shaft, and its up end is spacing in the lower terminal surface of semicircle snap ring, thrust bearing's seat circle is inlayed in the recess of rotary seal locating flange's up end.
Furthermore, the three-branch arm pipe sweeps the anti-freezing cryogenic 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 on the upper portion is limited on the lower end face of the sealing disc, the lower end face of the inner ring of the radial bearing on the lower portion 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 on the upper portion is limited on the lower end face of the bearing positioning sleeve.
furthermore, the three-branch arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, an annular groove is formed in the upper end face of the sealing disc, and an end face internal rotation sealing check ring is arranged in the annular groove; an end face internal rotation seal and/or an end face external rotation seal are arranged between the end face seal connecting flange and the sealing disc, the end face internal rotation seal is embedded in an inner hole of the end face internal rotation seal retainer ring, and the end face external rotation seal is embedded in an inner hole of the bearing positioning sleeve; at least one pipe shaft rotary seal is coaxially sleeved on the rotary pipe shaft between the rotary pipe shaft and the rotary seal positioning flange; tubular shaft rotary sealing pressing rings are arranged in grooves on the upper end surface and the lower end surface of the rotary sealing positioning flange; a dustproof ring frame flange is arranged in an annular groove at the lower end of the rotary sealing positioning flange, and a pipe shaft dustproof ring is arranged in an inner hole of the dustproof ring frame flange; the end face sealing connecting flange, the sealing disc and the rotating pipe shaft are all provided with fluid channel center holes which are communicated with each other, and welding interfaces are respectively arranged at the upper end part of the end face sealing connecting flange and the lower end part of the rotating pipe shaft; 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 which is coaxial with a central hole of the sealing disc at a position close to the central hole, and a circular sealing ring is embedded in the stepped hole; outer sleeve end face seals are respectively arranged between the upper end of the outer sleeve and the end face seal connecting flange and between the lower end of the outer sleeve and the rotary seal positioning flange; the end face sealing connecting flange and the rotary sealing positioning flange are respectively connected to two ends of the outer sleeve through a third fastening piece and a second fastening piece; the dustproof ring frame flange is connected to the lower end face of the rotary sealing positioning flange through a fastener.
Further, the three-branch arm pipe purging anti-freezing cryogenic fluid unloading arm comprises 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 respectively comprise five anti-freezing cryogenic fluid rotary joints and seven right-angle bends; the rotary arm, the rotary swing arm and the connecting arm are all horizontally arranged, the tail end of the rotary arm is connected with an upper end port of a second anti-freezing low-temperature fluid rotary joint through a second right-angle elbow, the second anti-freezing low-temperature fluid rotary joint is connected with a third anti-freezing low-temperature fluid rotary joint through a third right-angle elbow, the other end of the third anti-freezing low-temperature fluid rotary joint is connected with the head end of the rotary swing arm through a fourth right-angle elbow, the second anti-freezing low-temperature fluid rotary joint and the fourth anti-freezing low-temperature fluid rotary joint are arranged in a plumb mode, and the third anti-freezing low-; the tail end of a rotary swing arm of the gas phase arm is connected with four upper end ports of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow V to form a gas phase arm of a downward turning structure; the tail ends of the rotary swing arms of the liquid phase arm and the pressurization arm are connected with four lower end interfaces of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow V to respectively form an upturning structure liquid phase arm and an upturning structure pressurization 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 right-angle elbow; 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 right-angle elbow; 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 an annular loose flange.
Furthermore, the three-branch arm pipe sweeping anti-freezing cryogenic fluid unloading arm comprises a gas phase arm, a liquid phase arm and a pressure increasing arm, wherein the rotating arms of the gas phase arm, the liquid phase arm and the pressure increasing arm respectively comprise a vertical shaft, a tee joint, a first anti-freezing cryogenic fluid rotating joint, a rotating arm pipe and reinforcing rib plates, the vertical shaft, the tee joint, the rotating arm pipe and the reinforcing rib plates 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 rotating arm pipe, and the reinforcing rib plates of the pressure increasing arm form a lower structure below the rotating arm pipe.
furthermore, the three-branch arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, wherein the low-temperature 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 arm pipe purging anti-freezing cryogenic fluid unloading arm is characterized in that a gas-liquid phase arm furling fixing device and a pressurizing arm furling fixing device are arranged on the stand column frame, the gas-liquid phase arm furling 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 in parallel from top to bottom; the pressurizing arm folding and fixing device comprises a pressurizing arm fixing device base plate and a pressurizing arm positioning column, and the pressurizing arm positioning column is arranged on the pressurizing arm fixing device base plate.
Furthermore, the three-branch arm pipe sweeps anti-freezing cryogenic fluid unloading arm, wherein an arm lock mechanism is arranged between the vertical column frame and the rotary arm, the arm lock mechanism comprises a fixed lock seat, a lock pin and a movable lock piece, the fixed lock seat is arranged on the vertical column frame, the movable lock piece is arranged on a vertical shaft of the rotary arm, and the lock pin is arranged on the fixed lock seat and can penetrate through a lock hole of the movable lock piece.
Further, the three-branch arm pipe purging anti-freezing low-temperature fluid unloading arm comprises a main pipe low-temperature shut-off valve, an arm pipe purging air inlet subsystem and an arm pipe purging air outlet subsystem, wherein the arm pipe purging air inlet subsystem and the arm pipe purging air outlet subsystem respectively comprise an arm pipe purging vertical elbow, an arm pipe purging hose, an arm pipe purging low-temperature shut-off valve and an arm pipe purging connecting elbow and are sequentially connected, the arm pipe purging connecting elbow is arranged on the rotary swing arm and located behind the main pipe low-temperature shut-off valve, and the arm pipe purging vertical elbow is arranged on the stand.
Further, the three-branch arm pipe sweeps the anti-freezing cryogenic fluid unloading arm, wherein the pressurization arm is arranged at the bottom position or the middle position.
The utility model has the advantages that: the utility model is provided with a gas phase arm, a liquid phase arm and a pressurizing arm, and is suitable for the unloading occasion which uses the pressure gas generated by the vaporization of the liquefied low-temperature fluid of the transport tank car through the pressurizer as the gas source; the low-temperature fluid rotary joint is not blown by nitrogen and is not frozen, so that nitrogen and supply equipment and a pipeline system thereof are saved; the bearing structure is adopted to replace a steel ball raceway structure, so that the rotating resistance is small, the service life is long, and the disassembly, assembly and maintenance are convenient; the arm pipe purging system purges the arm pipe by using nitrogen to unload the residual low-temperature fluid in the arm pipe; the gas-liquid phase arm furling fixing device and the arm lock mechanism are arranged, so that the loading and unloading arm can keep safe and tidy in a furled state when not working.
Drawings
FIG. 1 is a block diagram of an anti-freezing cryogenic fluid swivel;
FIG. 2 is a front view of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 3 is a top view of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 4 is a schematic diagram of a column frame configuration for an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 5 is a front view of a gas phase arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloading arm;
FIG. 6 is a top view of a gas phase arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 7 is a front elevation view of a liquid phase arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloading arm;
FIG. 8 is a top plan view of a liquid phase arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 9 is a front view of a booster arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 10 is a top view of a booster arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 11 is a front view of an embodiment two of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 12 is a top plan view of an embodiment two of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
FIG. 13 is a front view of a second gas phase arm of an embodiment of a three-limb tube purging anti-freeze cryogenic fluid unloading arm;
FIG. 14 is a top plan view of a second gas phase arm of an embodiment of a three-branch arm tube purging anti-freeze cryogenic fluid unloader arm;
FIG. 15 is a front elevation view of a two-phase arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloading arm;
FIG. 16 is a top plan view of a two-phase arm of an embodiment of a three-branch arm tube purging anti-freeze cryogenic fluid unloading arm;
FIG. 17 is a front view of a second booster arm of an embodiment of a three-limb tube-purging anti-freeze cryogenic fluid unloader arm;
Figure 18 is a top view of a pressurization arm of an embodiment of a three-branch arm tube-purging anti-freeze cryogenic fluid unloading arm.
Detailed Description
Example 1
as shown in fig. 1-10, the three-branch arm pipe purging anti-freezing low-temperature fluid unloading arm comprises a column 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 to the column frame 1 in parallel through an anti-freezing low-temperature fluid rotary joint I251 and a rotary arm bearing frame 214, the pressurizing arm 5 is installed at a bottom position or a 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 low-temperature fluid rotary joint I-V251-255, a right-angle elbow I-V241-247, a low-temperature breaking valve 27, a spring balancer 26 and an arm pipe purging system, the gas phase arm 2, the liquid phase arm 3 and the pressurizing arm 5 are connected between the rotary arm 21 and the rotary swing arm 22 and between the rotary swing arm 22 and the connecting arm 23 in sequence through anti-freezing low-temperature flow rotary joints two-five 252-255 and right-angle elbows two-seven 242-247.
The anti-freezing low-temperature fluid rotary joints I-V251-255 respectively comprise an end face sealing connecting flange 2512, an outer sleeve 2505, a rotary sealing positioning flange 2503, a rotary pipe shaft 2501, a sealing disc 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 detachably connected to the upper end and the lower end of the outer sleeve 2505; a seal plate 2508 detachably connected to the upper end of the rotary pipe shaft 2501; a radial bearing 2506 is arranged between the rotating pipe shaft 2501 and the outer sleeve 2505, the end face seal connecting flange 2512, the outer sleeve 2505, the rotating seal positioning flange 2503, the rotating pipe shaft 201, the sealing disc 2508 and the outer sleeve end face seal 2504 between the rotating pipe shaft 201 and the outer sleeve end face seal 2505, the pipe shaft rotating seal 2502, the rotating pipe shaft end face seal 2509 and the end face rotating seal 2510 form a seal cavity, and all bearings are arranged in the seal cavity to prevent air with water vapor from contacting with the 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 second anti-freezing low-temperature fluid rotary joint 252 and the fourth anti-freezing low-temperature fluid rotary joint 254 are all arranged in a plumb mode, and the third anti-freezing low-temperature fluid rotary joint 253 and the fifth anti-freezing low-temperature fluid rotary joint 255 are all 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 port of the second anti-freezing low-temperature fluid rotary joint 252 through a right-angle elbow 242, and the second anti-freezing low-temperature fluid rotary joint 252 is connected with the third anti-freezing low-temperature fluid rotary joint 253 through a right-angle elbow 243; the other end of the anti-freezing cryogenic fluid swivel 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 port of the anti-freezing cryogenic fluid rotary joint four 254 through a right-angle elbow five 245 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 pressurization arm 5 are connected with the lower end interface of the anti-freezing low-temperature fluid rotary joint four 254 through a right-angle elbow five 245 to form the liquid phase arm 3 with the upturning structure and the pressurization arm with the upturning structure.
The lower end of the anti-freezing cryogenic fluid rotary joint IV 254 of the gas phase arm 2 is connected with the anti-freezing cryogenic fluid rotary joint V255 through a right-angle elbow VI 246; the upper ends of the anti-freezing cryogenic fluid rotary joints four 254 of the liquid phase arm 3 and the pressurizing arm 5 are connected with the anti-freezing cryogenic fluid rotary joint five 255 through a right-angle elbow six 246; the other end of the anti-freezing low-temperature fluid rotary joint five 255 is connected with the head end of the connecting arm 23 through a right-angle elbow seven 247, and the tail end of the connecting arm 23 is provided with an annular loose flange 231.
the rotary arms 21 of the gas phase arm 2, the liquid phase arm 3 and the pressure arm 5 respectively comprise a vertical shaft 212, a tee joint 211, a first anti-freezing low-temperature fluid rotary joint 251, a rotary arm pipe 215 and reinforcing rib plates 216, the vertical shaft 212, the tee joint 211, the rotary arm pipe 215 and the reinforcing rib plates 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 pressure arm 5 form a lower structure below the rotary arm pipe 215.
The low-temperature breaking valves 27 can be respectively arranged on the rotary swing arms 22 of the gas phase arm 2, the liquid phase arm 3 and the pressurization arm 5, or can be respectively arranged on the connecting arm 23, and because the loading and unloading arm does not have a nitrogen purging pipeline of a low-temperature rotary joint, the influence of the nitrogen pipeline is avoided when the low-temperature breaking valves are broken 27 in misoperation, and all the low-temperature breaking valves can be arranged on the rotary swing arms 22.
The stand column frame 1 is provided with a gas-liquid phase arm furling fixing device 13 and a pressurizing arm furling fixing device 14, the gas-liquid phase arm furling fixing device 13 comprises a gas-liquid phase arm fixing device base plate 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 base plate 131 in an up-and-down side-by-side mode; the pressing arm folding fixture 14 includes a pressing arm fixture base plate 141 and a pressing arm positioning post 142, wherein the pressing arm positioning post 142 is disposed on the pressing arm fixture base plate 141.
the arm lock mechanisms 4 are respectively arranged between the column 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 piece 213, the fixed lock seats 11 are arranged on the column frame 1, the movable lock pieces 213 are arranged on the vertical shafts 212 of the rotary arms 21, the lock pins 12 are arranged on the fixed lock seats 11 and can penetrate through lock holes of the movable lock pieces 213, and when the arm lock mechanisms 4 are in a locking state, the rotary arms 21 are fixed in a folded state and cannot rotate, so that the loading and unloading arms are safe and tidy.
The gas phase arm 2, the liquid phase arm and the pressure increasing arm 5 are all provided with an arm pipe purging system 28, the arm pipe purging system 28 mainly comprises a main path low-temperature shut-off 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 elbow 2811, an arm pipe purging hose 2822, an arm pipe purging low-temperature shut-off valve 2813 and an arm pipe purging connecting elbow 2814 which are sequentially connected, the arm pipe purging connecting elbow 2814 is arranged on the rotary swing arm 22 and located behind the main path low-temperature shut-off valve 221, and the arm pipe purging vertical elbow 2811 is arranged on the column frame 1.
Example 2
As shown in fig. 11 to 18, the differences from embodiment 1 are: the low temperature breaking valve 27 is provided on the connecting arm 23, and the rest is the same.
Description of the drawings:
1. The first to fifth 251-255 anti-freezing low-temperature fluid rotary joints have the same structure;
2. the structures of the first to seventh right-angle elbows 241-247 are the same;
the foregoing components have been labeled with different name designations for ease of description.
Claims (10)
1. The three-branch arm pipe purging anti-freezing low-temperature fluid unloading arm is characterized by comprising 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 connected to the column frame in parallel through an anti-freezing low-temperature fluid rotary joint and a rotary arm bearing frame;
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 tubular 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 rotating pipe shaft; the rotary pipe shaft with set up radial bearing between the overcoat, end face seal flange, overcoat, rotary seal locating flange, rotary pipe shaft, sealed dish and between them overcoat end face seal, hollow shaft rotary seal, rotary pipe shaft end face seal, ring seal circle, end face internal rotation seal, the outer rotary seal of end face constitute sealed chamber, radial bearing sets up sealed intracavity.
2. the three-branch arm pipe sweeping anti-freezing cryogenic fluid unloading arm according to claim 1, wherein a semicircular snap ring is coaxially arranged in an annular groove in the middle section of the rotating pipe shaft, a semicircular snap ring positioning sleeve is sleeved outside the semicircular snap ring, a bearing positioning sleeve is arranged between the end face sealing connecting flange and the radial bearing outer ring, and the bearing positioning sleeve is embedded in an inner hole of the outer sleeve; set up thrust bearing between semicircle snap ring and the rotary seal locating flange, thrust bearing's shaft collar cover is on rotatory hollow shaft, and its up end is spacing in the lower terminal surface of semicircle snap ring, thrust bearing's seat circle is inlayed in the recess of rotary seal locating flange's up end.
3. the three-branch-arm pipe sweeping anti-freezing cryogenic fluid unloading arm as claimed in claim 2, wherein 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 on the upper portion is limited on the lower end face of the sealing disc, the lower end face of the inner ring of the radial bearing on the lower portion 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 on the upper portion is limited on the lower end face of the bearing positioning sleeve.
4. the three-branch-arm pipe-sweeping anti-freezing cryogenic fluid unloading arm according to claim 1, wherein an annular groove is formed in the upper end face of the sealing disc, and an end-face internal rotation sealing retainer ring is arranged in the annular groove; an end face internal rotation seal and/or an end face external rotation seal are arranged between the end face seal connecting flange and the sealing disc, the end face internal rotation seal is embedded in an inner hole of the end face internal rotation seal retainer ring, and the end face external rotation seal is embedded in an inner hole of the bearing positioning sleeve; at least one pipe shaft rotary seal is coaxially sleeved on the rotary pipe shaft between the rotary pipe shaft and the rotary seal positioning flange; tubular shaft rotary sealing pressing rings are arranged in grooves on the upper end surface and the lower end surface of the rotary sealing positioning flange; a dustproof ring frame flange is arranged in an annular groove at the lower end of the rotary sealing positioning flange, and a pipe shaft dustproof ring is arranged in an inner hole of the dustproof ring frame flange; the end face sealing connecting flange, the sealing disc and the rotating pipe shaft are all provided with fluid channel center holes which are communicated with each other, and welding interfaces are respectively arranged at the upper end part of the end face sealing connecting flange and the lower end part of the rotating pipe shaft; 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 which is coaxial with a central hole of the sealing disc at a position close to the central hole, and a circular sealing ring is embedded in the stepped hole; outer sleeve end face seals are respectively arranged between the upper end of the outer sleeve and the end face seal connecting flange and between the lower end of the outer sleeve and the rotary seal positioning flange; the end face sealing connecting flange and the rotary sealing positioning flange are respectively connected to two ends of the outer sleeve through a third fastening piece and a second fastening piece; the dustproof ring frame flange is connected to the lower end face of the rotary sealing positioning flange through a fastener.
5. The three-limb tube-purging anti-freezing cryogenic fluid offloading arm of claim 1, wherein the gas phase arm, liquid phase arm, and pressurization arm each comprise five anti-freezing cryogenic fluid swivels and seven quarter bends; the rotary arm, the rotary swing arm and the connecting arm are all horizontally arranged, the tail end of the rotary arm is connected with an upper end port of a second anti-freezing low-temperature fluid rotary joint through a second right-angle elbow, the second anti-freezing low-temperature fluid rotary joint is connected with a third anti-freezing low-temperature fluid rotary joint through a third right-angle elbow, the other end of the third anti-freezing low-temperature fluid rotary joint is connected with the head end of the rotary swing arm through a fourth right-angle elbow, the second anti-freezing low-temperature fluid rotary joint and the fourth anti-freezing low-temperature fluid rotary joint are arranged in a plumb mode, and the third anti-freezing low-; the tail end of a rotary swing arm of the gas phase arm is connected with four upper end ports of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow V to form a gas phase arm of a downward turning structure; the tail ends of the rotary swing arms of the liquid phase arm and the pressurization arm are connected with four lower end interfaces of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow V to respectively form an upturning structure liquid phase arm and an upturning structure pressurization 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 right-angle elbow; 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 right-angle elbow; 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 an annular loose flange.
6. the three-branch arm pipe sweeping anti-freezing cryogenic fluid unloading arm according to claim 1, wherein the rotary arms of the gas-phase arm, the liquid-phase arm and the pressure-increasing arm respectively comprise a vertical shaft, a tee joint, a first anti-freezing cryogenic fluid rotary joint, 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 pressure-increasing arm forms a lower structure below the rotary arm pipe.
7. The three-branch-arm pipe purging anti-freezing cryogenic fluid unloading arm according to claim 1, wherein the cryogenic breaking valves are respectively arranged on the swing arms or the connecting arms of the gas phase arm, the liquid phase arm and the pressurizing arm.
8. The three-branch arm pipe sweeping anti-freezing cryogenic fluid unloading arm according to claim 1, wherein a gas-liquid phase arm furling fixing device and a pressurizing arm furling fixing device are arranged on the stand column frame, the gas-liquid phase arm furling fixing device comprises a gas-liquid phase arm fixing device base plate, 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 base plate in a vertical side-by-side mode; the pressurizing arm folding and fixing device comprises a pressurizing arm fixing device base plate and a pressurizing arm positioning column, and the pressurizing arm positioning column is arranged on the pressurizing arm fixing device base plate.
9. the three-branch-arm pipe sweeping anti-freezing cryogenic fluid unloading arm according to claim 1, wherein an arm locking mechanism is arranged between the upright post frame and the rotary arm, the arm locking mechanism comprises a fixed locking seat, a locking pin and a movable locking piece, the fixed locking seat is arranged on the upright post frame, the movable locking piece is arranged on a vertical shaft of the rotary arm, and the locking pin is arranged on the fixed locking seat and can penetrate through a locking hole of the movable locking piece.
10. The three-branch arm pipe purging anti-freezing cryogenic fluid unloading arm according to claim 1, wherein the arm pipe purging system comprises a main pipe low-temperature shut-off valve, an arm pipe purging air inlet subsystem and an arm pipe purging air outlet subsystem, the arm pipe purging air inlet subsystem and the arm pipe purging air outlet subsystem respectively comprise an arm pipe purging vertical elbow, an arm pipe purging hose, an arm pipe purging low-temperature shut-off valve and an arm pipe purging connecting elbow and are sequentially connected, the arm pipe purging connecting elbow is arranged on the rotary swing arm and located behind the main pipe low-temperature shut-off valve, and the arm pipe purging vertical elbow is arranged on the column frame.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920618281.5U CN209782219U (en) | 2019-04-30 | 2019-04-30 | Three-branch arm pipe purging anti-freezing low-temperature fluid unloading arm |
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| CN201920618281.5U CN209782219U (en) | 2019-04-30 | 2019-04-30 | Three-branch arm pipe purging anti-freezing low-temperature fluid unloading arm |
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| CN209782219U true CN209782219U (en) | 2019-12-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973815A (en) * | 2019-04-30 | 2019-07-05 | 鞍山市昱虎流体设备有限公司 | Three branch arm pipes purging Anti-freezing cryogen is unloaded arm |
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2019
- 2019-04-30 CN CN201920618281.5U patent/CN209782219U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109973815A (en) * | 2019-04-30 | 2019-07-05 | 鞍山市昱虎流体设备有限公司 | Three branch arm pipes purging Anti-freezing cryogen is unloaded arm |
| CN109973815B (en) * | 2019-04-30 | 2023-12-22 | 鞍山市昱虎流体设备有限公司 | Anti-freezing cryogenic fluid unloading arm with three-branch support arm pipe sweeping function |
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