CN209876494U - Anti-freezing low-temperature fluid loading and unloading arm - Google Patents
Anti-freezing low-temperature fluid loading and unloading arm Download PDFInfo
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- CN209876494U CN209876494U CN201920618285.3U CN201920618285U CN209876494U CN 209876494 U CN209876494 U CN 209876494U CN 201920618285 U CN201920618285 U CN 201920618285U CN 209876494 U CN209876494 U CN 209876494U
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Abstract
The utility model belongs to cryogenic fluid handling equipment field, concretely relates to anti-freezing cryogenic fluid handling arm. The technical scheme is as follows: the device comprises a vertical column frame, a gas phase arm and a liquid phase arm, wherein the gas phase arm and the liquid phase arm are connected to the vertical column frame through anti-freezing low-temperature fluid rotary joints and a rotary arm bearing frame; the anti-freezing cryogenic 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, 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, a circular sealing ring, the end face internal rotary seal and the end face external rotary seal between the end face sealing connecting flange, the outer sleeve, the rotary sealing positioning flange, the rotary pipe shaft, the sealing disc and the. The utility model provides a loading and unloading arm sweep with nitrogen gas and rotate the problem that the resistance is big, the life-span is short.
Description
Technical Field
The utility model belongs to cryogenic fluid handling equipment field, concretely relates to anti-freezing cryogenic fluid handling arm.
Background
At present, a rotary joint on a loading and unloading arm applied to the field of liquid nitrogen, liquid oxygen, liquefied natural gas and other low-temperature fluid equipment adopts a steel ball raceway structure, 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 of the rotary joint through a gap on the rotary joint and causing the water vapor to freeze at the steel ball raceway part to cause the water vapor to be incapable 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 nitrogen must be used for continuously purging the steel ball raceway part inside the rotary joint, so that the air cannot enter the inside of the rotary joint, nitrogen supply equipment and a pipeline are required to be equipped, the rotary joint cannot be used in occasions without a nitrogen source, the investment cost of the equipment is increased, and the nitrogen is wasted; the inside nitrogen gas passageway that has of low temperature rotary joint for rotary joint structure is complicated, breaks down easily, and the dismouting maintenance of being not convenient for.
The low-temperature fluid loading and unloading arm comprises a plurality of low-temperature rotary joints, each rotary joint needs nitrogen purging, and all the rotary joints need to be connected through pipelines to form a rotary joint nitrogen purging system, so that the installation position of the breaking valve is limited, the breaking valve cannot be installed at the position with the nitrogen purging pipeline, otherwise, once false operation occurs, the low-temperature breaking valve cannot be broken, or the rotary joint nitrogen purging system is connected with the pipeline after the low-temperature breaking valve is broken, the breaking valve does not play a role in breaking the pipeline, the fluid transportation vehicle and the fluid loading and unloading arm are broken, fluid is leaked, and safety accidents such as fire, explosion, environmental pollution and the like are caused, so 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 labor-consuming to operate, and has short service life and difficult disassembly, assembly and maintenance. At present, an anti-freezing cryogenic fluid loading and unloading arm with a bearing structure and without nitrogen purging for a cryogenic fluid rotary joint does not exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides an anti-freezing cryogenic fluid loading and unloading arm does not need nitrogen gas to sweep and does not take place to freeze, can use in the occasion of no nitrogen gas source, and the rotation resistance is little, flexible operation, long service life, maintenance easy dismounting.
The technical scheme of the utility model as follows:
the anti-freezing low-temperature fluid loading and unloading arm comprises a column frame, a gas phase arm and a liquid phase arm, wherein the gas phase arm and the liquid phase 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.
Furthermore, in the anti-freezing cryogenic fluid loading and unloading arm, a semicircular snap ring is coaxially arranged in an annular groove in the middle section of the rotating tubular 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 quantity of the radial bearings of the anti-freezing cryogenic fluid loading and unloading arm 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 upper end surface of the sealing disc of the anti-freezing cryogenic fluid handling arm is provided with an annular groove, and an end surface 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.
Furthermore, in the anti-freezing cryogenic fluid loading and unloading arm, a semicircular snap ring is coaxially arranged in an annular groove in the middle section of a coiled head tubular shaft in the anti-freezing cryogenic fluid rotary joint, 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 shell; a thrust bearing is arranged between the semicircular clamping ring and the bottom of the shell, a shaft ring of the thrust bearing is sleeved on a pan head tubular shaft, the upper end face of the thrust bearing is limited on the lower end face of the semicircular clamping ring, a seat ring of the thrust bearing is embedded at the bottom of the shell, and the thrust bearing is arranged in the sealing cavity; the number of the radial bearings is at least one group, and the radial bearings are arranged between the shell and the coiled pipe shaft, so that the shell and the coiled pipe shaft form rolling connection; the upper end face of the inner ring of the upper radial bearing is limited on the lower end face of the pan head tubular shaft, the lower end face of the inner ring of the lower radial bearing is limited on the upper end face of the semicircular clamping ring, and the upper end face of the outer ring of the upper radial bearing is limited on the lower end face of the bearing positioning sleeve; an annular groove is formed in the upper end face of the pan head tubular shaft, and an end face rotary 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 pan head tubular shaft, the end face internal rotation seal is embedded in an inner hole of the end face 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 rotating seal is coaxially sleeved on the pan head pipe shaft between the pan head pipe shaft and the shell; a tubular shaft rotary sealing pressing ring is arranged in a groove at the bottom of the shell; a dustproof ring frame flange is arranged in an annular groove at the lower end of the shell, and a tubular shaft dustproof ring is arranged in an inner hole of the dustproof ring frame flange; the end face sealing connecting flange and the pan head tubular shaft are both provided with fluid passage central 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 pan head tubular shaft; the lower end face of the end face sealing connecting flange and the upper end face of the pan head tubular shaft are respectively provided with a stepped hole which is coaxial with a central hole of the lower end face sealing connecting flange and the upper end face of the pan head tubular shaft at a position close to the central hole, and a circular sealing ring is embedded in the stepped holes; a shell end face seal is arranged between the upper end of the shell and the end face seal connecting flange; the end face sealing connecting flange is connected to the upper end of the shell through a second fastening piece; the dustproof ring frame flange is connected to the lower end face of the shell through a fastener.
Furthermore, the anti-freezing cryogenic fluid handling arm, wherein the anti-freezing cryogenic fluid swivel joint further comprises a rotary seal positioning flange, a thrust bearing is arranged between the semicircular snap ring and the rotary seal positioning flange, and a seat ring of the thrust bearing is embedded in a groove on the upper end surface of the rotary seal positioning flange; the coiled head pipe shaft and the rotary seal positioning flange are coaxially sleeved on at least one pipe shaft rotary seal; the grooves on the upper end surface and the lower end surface of the rotary sealing positioning flange are internally provided with a pan head tubular shaft rotary sealing pressing ring; 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; an outer sleeve end face seal is arranged between the lower end of the outer sleeve and the rotary seal positioning flange; the rotary sealing positioning flange is connected to the lower end of the outer sleeve through a third fastening piece.
Further, the anti-freezing cryogenic fluid handling arm, wherein the anti-freezing cryogenic fluid swivel joint further comprises a sealing disc, and the sealing disc is detachably connected to the upper end of the swivel pipe shaft; the upper end face of the inner ring of the radial bearing positioned at the upper part is limited on the lower end face of the sealing disc, the upper end face of the sealing disc is provided with an annular groove, 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; the end face sealing connection flange, sealed dish and rotatory hollow shaft all are equipped with the fluid passage centre bore of intercommunication each other, the lower terminal surface of end face sealing connection flange and sealed dish up end is being close to its central hole portion position and is being equipped with the shoulder hole coaxial rather than self centre bore respectively, and the ring seal inlays in the shoulder hole.
Furthermore, the gas phase arm and the liquid phase arm of the anti-freezing cryogenic fluid loading and unloading arm respectively comprise five anti-freezing cryogenic fluid rotary joints and seven right-angle elbows; 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 end of a rotary swing arm of the liquid phase arm is connected with four lower end interfaces of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow V 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 right-angle elbow; 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 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 anti-freezing low-temperature fluid loading and unloading 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.
Further, the anti-freezing cryogenic fluid loading and unloading arm is characterized in that the cryogenic breaking valves are respectively arranged on the rotary swing arms or the connecting arms of the gas phase arm and the liquid phase arm.
Further, the anti-freezing cryogenic fluid loading and unloading arm is characterized in that a gas-liquid phase arm folding and fixing device is arranged on the stand column frame and 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; and after the loading and unloading arm is folded, the annular loose flange is respectively arranged on the gas phase arm positioning column and the liquid phase arm positioning column.
Furthermore, the anti-freezing cryogenic fluid loading and unloading arm is characterized in that 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 piece, the fixed lock seat is arranged on the upright post 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 penetrates through a lock hole of the movable lock piece.
The utility model has the advantages that: adopt the utility model discloses an anti-freezing cryogenic fluid loading and unloading arm, no nitrogen sweep system do not take place to freeze, can use in the occasion of no nitrogen source, have saved nitrogen gas and supply apparatus, pipe-line system. The bearing structure is adopted to replace a steel ball pipeline structure, so that the rotating resistance is small, the operation is flexible, the service life is long, and the maintenance, the assembly and the disassembly are convenient; the gas-liquid phase arm furling fixing device and the locking 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 an anti-freeze cryogenic fluid handling arm;
FIG. 3 is a top view of an embodiment of an anti-freeze cryogenic fluid handling arm;
FIG. 4 is a view of the construction of the mast frame;
FIG. 5 is a front view of an embodiment of the 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 an embodiment of an anti-freeze cryogenic fluid handling arm;
FIG. 10 is a top plan view of a second embodiment of an anti-freeze cryogenic fluid handling arm;
FIG. 11 is a front view of a second embodiment of the gas phase arm;
FIG. 12 is a top 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 anti-freezing cryogenic fluid handling 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 to the column frame 1 in parallel 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, right angle bends I-V241-247, a low temperature break valve 27 and a spring balancer 26, and the rotary arm 21 and the rotary swing arm 22 of the gas phase arm 2 and the liquid phase arm 3, and the rotary swing arm 22 and the connecting arm 23 are sequentially connected through anti-freezing cryogenic fluid rotary joints II-V252-255 and right angle bends II-V242-V-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 and the liquid phase arm 3 are all horizontally arranged, the second anti-freezing low-temperature fluid rotary joint 2502 and the fourth anti-freezing low-temperature fluid rotary joint 2504 are all arranged in a plumb mode, and the third anti-freezing low-temperature fluid rotary joint 2503 and the fifth anti-freezing low-temperature fluid rotary joint 2505 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 interface of the second anti-freezing low-temperature fluid rotary joint 2502 through a second 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 third 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 245 with the upper port of the anti-freezing low-temperature fluid rotary joint IV 354 through a right-angle elbow V to form a gas phase arm 2 with a downward turning structure;
the tail end of the rotary swing arm 22 of the liquid phase arm 3 is connected with the lower end interface of the anti-freezing cryogenic fluid rotary joint four 254 through a right-angle elbow five 245 to form the liquid phase arm 3 with an 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 end of the anti-freezing cryogenic fluid rotary joint IV 254 of the liquid phase arm 3 is connected with the anti-freezing cryogenic fluid rotary joint V255 through a right-angle elbow VI 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 and the liquid phase arm 3 respectively comprise a vertical shaft 212, a tee joint 211, an anti-freezing low-temperature 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, and the reinforcing rib plate 216 forms an upper structure on 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 and the liquid phase arm 3, or can be 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 by misoperation, and all the low-temperature breaking valves can be arranged on the rotary swing arms.
The gas-liquid phase arm furling fixing device 13 is arranged on the stand column frame 1 and 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, 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, and after the loading and unloading arm is furled, the annular loose flange 231 at the tail end of the connecting arm 23 is placed on the gas phase arm positioning column 132 and the liquid phase arm positioning column 133 respectively, so that the loading and unloading arm can be kept.
The arm lock mechanisms 4 are respectively arranged between the column 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 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 212, and when the arm lock mechanisms 4 are in a locked 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.
Example 2
As shown in fig. 9 to 14, 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 (9)
1. The anti-freezing low-temperature fluid loading and unloading arm is characterized by comprising a column frame, a gas phase arm and a liquid phase arm, wherein the gas phase arm and the liquid phase 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 anti-freezing cryogenic fluid loading and unloading arm according to claim 1, wherein a semicircular snap ring is coaxially arranged in the 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 anti-freezing cryogenic fluid handling arm of claim 2 wherein the number of radial bearings is at least one, and the radial bearings are disposed between the outer sleeve and the rotating pipe shaft so that the outer sleeve and the rotating pipe shaft form a 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 anti-freezing cryogenic fluid handling arm of claim 1 wherein an annular groove is provided in the upper end surface of the gland plate, and an end surface internal rotation sealing collar is provided 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 anti-freezing cryogenic fluid handling arm of claim 1 wherein the gas phase arm and the liquid phase arm each comprise five anti-freezing cryogenic fluid swivel joints 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 end of a rotary swing arm of the liquid phase arm is connected with four lower end interfaces of the anti-freezing low-temperature fluid rotary joint through a right-angle elbow V 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 right-angle elbow; 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 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 anti-freezing cryogenic fluid handling arm of claim 1, wherein the swivel arm comprises a vertical shaft, a tee joint, an anti-freezing cryogenic fluid swivel joint, a swivel arm tube and a stiffener plate, the vertical shaft, the tee joint, the swivel arm tube and the stiffener plate form a triangular stable structure, and the stiffener plate forms an upper structure on the swivel arm tube.
7. The anti-freezing cryogenic fluid handling arm of claim 1 wherein the cryogenic break valve is disposed on a swing swivel arm or a connecting arm of the gas phase arm and the liquid phase arm, respectively.
8. The anti-freezing cryogenic fluid loading and unloading arm as claimed in claim 5, wherein the stand is provided with a gas-liquid arm folding and fixing device, the gas-liquid arm folding and fixing device comprises a gas-liquid 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 side by side up and down on the gas-liquid arm fixing device base plate; and after the loading and unloading arm is folded, the annular loose flange is respectively arranged on the gas phase arm positioning column and the liquid phase arm positioning column.
9. The anti-freezing cryogenic fluid loading and unloading arm according to claim 1, wherein an arm lock mechanism is arranged between the column frame and the rotating 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 column frame, the movable lock piece is arranged on a vertical shaft of the rotating arm, and the lock pin is arranged on the fixed lock seat and penetrates through a lock hole of the movable lock piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920618285.3U CN209876494U (en) | 2019-04-30 | 2019-04-30 | Anti-freezing low-temperature fluid loading and unloading arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110005942A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low temperature fluid handling arm |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005942A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low temperature fluid handling arm |
| CN110005942B (en) * | 2019-04-30 | 2023-12-22 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low-temperature fluid loading and unloading arm |
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