CN209782247U - Shell split type anti-freezing low-temperature fluid rotary joint - Google Patents
Shell split type anti-freezing low-temperature fluid rotary joint Download PDFInfo
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- CN209782247U CN209782247U CN201920619649.XU CN201920619649U CN209782247U CN 209782247 U CN209782247 U CN 209782247U CN 201920619649 U CN201920619649 U CN 201920619649U CN 209782247 U CN209782247 U CN 209782247U
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Abstract
the utility model belongs to cryogenic fluid equipment field, concretely relates to anti-freezing cryogenic fluid rotary joint of casing split formula. The technical scheme of the utility model as follows: the shell split type anti-freezing low-temperature fluid rotary joint comprises an end face sealing connecting flange, an outer sleeve, a rotary sealing positioning flange, a pan head pipe shaft 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 end face seal connecting flange, the outer sleeve, the rotary seal positioning flange, the coiled head pipe shaft and the outer sleeve end face seal, the pipe shaft rotary seal, the annular seal ring, the end face inner rotary seal and/or the end face outer rotary seal between the coiled head pipe shaft and the outer sleeve form a seal cavity, and the radial bearing is arranged in the seal cavity. The utility model discloses but the removable structure that well shell adopted overcoat and rotary seal positioning flange to constitute is convenient for make, adopts bearing structure, and the rotation resistance is little, and is longe-lived.
Description
Technical Field
The utility model relates to a cryogenic fluid equipment field especially relates to a casing split formula cryogenic fluid rotary joint that freezes.
Background
The low-temperature fluid rotary joint is a key part for manufacturing loading and unloading arms for low-temperature fluids such as liquid nitrogen, liquid oxygen, liquefied natural gas and the like, is used for connecting pipelines and bent pipes, and can rotate without leakage or freezing through the low-temperature fluids. However, the existing cryogenic fluid rotary joints generally have the following disadvantages: in order to prevent the raceway steel balls from freezing, during the working period of the low-temperature rotary joint, nitrogen is required to continuously purge the rolling body part in the rotary joint, and nitrogen supply equipment and a pipeline system are required to be arranged, so that the investment cost of the equipment is increased, and the nitrogen is wasted; the low-temperature rotary joint is internally provided with a nitrogen channel, so that the rotary joint is complex in structure and easy to break down. The ball track steel ball structure is adopted, so that the rotating resistance is large, the service life is short, and the disassembly, assembly and maintenance are not convenient.
SUMMERY OF THE UTILITY MODEL
The utility model provides a shell split formula anti-freezing cryogenic fluid rotary joint, sealed intracavity are all arranged in to all bearings, thereby avoid having the air of vapor and rolling element contact to prevent to freeze, and nitrogen-free sweeping system has saved nitrogen gas and supply apparatus, pipeline.
The utility model provides a technical scheme that its technical problem adopted as follows:
The shell split type anti-freezing low-temperature fluid rotary joint comprises an end face sealing connecting flange, an outer sleeve, a rotary sealing positioning flange, a pan head pipe shaft 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; a radial bearing is arranged between the pan head tubular shaft and the outer sleeve, the end face seal connecting flange, the outer sleeve, the rotary seal positioning flange, the pan head tubular shaft and the outer sleeve end face seal, the tubular shaft rotary seal, the annular seal ring, the end face inner rotary seal and/or the end face outer rotary seal between the pan head tubular shaft and the outer sleeve form a seal cavity, and the radial bearing is arranged in the seal cavity to prevent air with water vapor from contacting the rolling body so as to prevent freezing; the end face sealing connecting flange, the outer sleeve and the rotary sealing positioning flange form a split type shell.
Furthermore, the shell split type anti-freezing low-temperature fluid rotary joint is characterized in that a semicircular snap ring is coaxially arranged in an annular groove in the middle section of the coiled head 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.
furthermore, the shell split type anti-freezing low-temperature fluid rotary joint is characterized in that a thrust bearing is arranged between the semicircular clamping ring and the rotary seal positioning flange, a shaft ring of the thrust bearing is sleeved on a coiled head 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 embedded in a groove in the upper end face of the rotary seal positioning flange.
furthermore, the shell is provided with a detachable anti-freezing cryogenic fluid swivel joint, wherein the number of the radial bearings is at least one group, and the radial bearings are arranged between the outer sleeve and the coiled head pipe shaft, so that the outer sleeve and the coiled head 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 pan head tubular shaft, 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 shell split type anti-freezing low-temperature fluid rotary joint is characterized in that an annular groove is formed in the upper end face of the coiled head pipe shaft, and an end face internal rotation sealing check ring is arranged in the annular groove.
Further, the shell split type anti-freezing cryogenic fluid rotary joint is characterized in that 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 pipe shaft, the end face internal rotation seal is embedded in an inner hole of an 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.
Furthermore, the shell is a detachable anti-freezing cryogenic fluid rotary joint, wherein at least one pipe shaft rotary seal is coaxially sleeved on the pipe shaft of the coiled head between the pipe shaft of the coiled head and the rotary seal positioning flange; 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; and a dustproof ring frame flange is arranged in an annular groove at the lower end of the rotary seal positioning flange, and a tubular shaft dustproof ring is arranged in an inner hole of the dustproof ring frame flange.
Furthermore, the shell split type anti-freezing cryogenic fluid rotary joint is characterized in that the end face sealing connecting flange and the pan head pipe shaft are respectively provided with a fluid passage central hole 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 pipe 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 flange at a position close to the central hole, and a circular sealing ring is embedded in the stepped holes.
Furthermore, the shell split type anti-freezing low-temperature fluid rotary joint is characterized in that 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.
Furthermore, the shell is a detachable anti-freezing low-temperature fluid rotary joint, wherein an end face sealing connecting flange and a 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.
The utility model has the advantages that: adopt the utility model discloses a casing split formula anti-freezing cryogenic fluid rotary joint has solved current cryogenic fluid rotary joint and for preventing that rotary joint freezes the problem that must sweep the rolling element with nitrogen gas, does not have nitrogen gas purging system, can work at the occasion of nitrogen-free source, has saved nitrogen gas and supply apparatus, pipe-line system. The shell of the rotary joint adopts a split structure consisting of an outer sleeve and a rotary sealing positioning flange, and is convenient to process and manufacture. The bearing structure is adopted to replace a steel ball pipeline structure, so that the rotating resistance is small, and the service life is long.
Drawings
Figure 1 is a schematic structural view of a first embodiment of a shell split anti-freezing cryogenic fluid swivel;
figure 2 is a schematic structural view of a second embodiment of a shell split anti-freezing cryogenic fluid swivel;
Figure 3 is a schematic structural view of a third embodiment of a shell split anti-freezing cryogenic fluid swivel;
Figure 4 is a schematic structural view of a fourth embodiment of a shell split anti-freezing cryogenic fluid swivel;
Figure 5 is a schematic structural view of a fifth embodiment of a shell split anti-freezing cryogenic fluid swivel;
Figure 6 is a schematic structural view of a sixth embodiment of a shell split anti-freezing cryogenic fluid swivel;
FIG. 7 is a schematic view of an end-face sealing attachment flange configuration;
FIG. 8 is a schematic view of the jacket construction;
FIG. 9 is a schematic view of a rotary seal positioning flange configuration;
Fig. 10 is a schematic view of the structure of the pan head tube shaft.
Detailed Description
example 1
As shown in fig. 1, the shell detachable anti-freezing cryogenic fluid rotary joint comprises an end face sealing connecting flange 20, an outer sleeve 11, a rotary sealing positioning flange 8, a pan head pipe shaft 1, a radial bearing 14 and a thrust bearing 10, wherein the end face sealing connecting flange 20 and the rotary sealing positioning flange 8 are respectively detachably connected to the upper end and the lower end of the outer sleeve 11; a radial bearing 14 is arranged between the pan head tubular shaft 1 and the outer sleeve, the end face sealing connecting flange 20, the outer sleeve 11, the rotary sealing positioning flange 8, the outer sleeve end face seal 9 between the pan head tubular shaft 1 and the outer sleeve, the tubular shaft rotary seal 7, the annular seal ring 19, the end face inner rotary seal 18 and the end face outer rotary seal 16 form a seal cavity, and the radial bearing 14 and the thrust bearing 10 are arranged in the seal cavity to prevent air with water vapor from contacting with the rolling body so as to prevent freezing; the end face sealing connecting flange 20, the outer sleeve 11 and the rotary sealing positioning flange 8 form a split type shell.
A semicircular clamping ring 12 is coaxially arranged in an annular groove in the middle section of the coiled pipe shaft 1, a semicircular clamping ring positioning sleeve 13 is sleeved outside the semicircular clamping ring 12, a bearing positioning sleeve 15 is arranged between the end face sealing connecting flange 20 and the outer ring of the radial bearing 14, and the bearing positioning sleeve 15 is embedded in an inner hole of the outer sleeve 11.
The number of the radial bearings 14 is three, and the radial bearings 14 are arranged between the outer sleeve 11 and the pan head tubular shaft 1, so that the outer sleeve 11 and the pan head tubular shaft 1 form rolling connection; the upper end face of the inner ring of the upper radial bearing 14 is limited on the lower end face of the pan head tubular shaft 1, the lower end face of the inner ring of the lower radial bearing 14 is limited on the upper end face of the semicircular snap ring 12, and the upper end face of the outer ring of the upper radial bearing 14 is limited on the lower end face of the bearing positioning sleeve 15.
Set up thrust bearing 10 between semicircle snap ring 12 and the rotary seal locating flange 8, thrust bearing 10's shaft collar cover is on coiled hair hollow shaft 1, and its up end is spacing in the lower terminal surface of semicircle snap ring 12, thrust bearing 10's seat circle is inlayed in the recess of the up end of rotary seal locating flange 8.
An annular groove is formed in the upper end face of the pan head tubular shaft 1, and an end face internal rotation sealing check ring 17 is arranged in the annular groove.
a combined sealing groove for placing the end face internal rotation seal 18 and the end face external rotation seal 16 is formed among the end face sealing connecting flange 20, the pan head tubular shaft 1, the bearing positioning sleeve 15 and the end face internal rotation sealing retainer ring;
an end face internal rotation seal 18, an end face external rotation seal 16 and a circular seal ring 19 are arranged between the end face sealing connecting flange 20 and the pan head tubular shaft 1, the end face internal rotation seal 18 is embedded in an inner hole of the end face internal rotation seal retainer ring 17, and the end face external rotation seal 16 is embedded in an inner hole of the bearing positioning sleeve 15.
The two pipe shaft rotary seals 7 are coaxially sleeved on the coiled head pipe shaft 1 between the coiled head pipe shaft 1 and the rotary seal positioning flange 8; the upper end surface groove and the lower end surface groove of the rotary sealing positioning flange 8 are respectively provided with a pan head tubular shaft rotary sealing pressing ring 5; and a dustproof ring frame flange 2 is arranged in an annular groove at the lower end of the rotary seal positioning flange 8, and a pipe shaft dustproof ring 3 is arranged in an inner hole of the dustproof ring frame flange 2.
The end face sealing connecting flange 20 and the pan head tubular shaft 1 are both provided with fluid passage 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 20 and the lower end part of the pan head tubular shaft 1; the lower end face of the end face sealing connecting flange 20 and the upper end face of the pan head tubular shaft 1 are respectively provided with a stepped hole which is coaxial with the central hole of the flange at the position close to the central hole part, and the annular sealing ring 19 is embedded in the stepped holes.
And outer sleeve end face sealing rings 9 are respectively arranged between the upper end of the outer sleeve 11 and the end face sealing connecting flange 20 and between the lower end of the outer sleeve 11 and the rotary sealing positioning flange 8.
The end face sealing connecting flange 20 and the rotary sealing positioning flange 8 are respectively connected to two ends of the outer sleeve 11 through a third fastening piece 21 and a second fastening piece 6; the dustproof ring frame flange 2 is connected to the lower end face of the rotary seal positioning flange 8 through a first fastener 4.
Example 2
As shown in fig. 2, the difference from embodiment 1 is that the radial bearings 11 are two groups, and a positioning ring is provided between the two radial bearings 11.
example 3
As shown in fig. 3, the difference from embodiment 1 is that the radial bearings 11 are two in number.
Example 4
As shown in fig. 4, the present embodiment is different from embodiment 1 in that only the radial bearing 11 is provided and no thrust bearing is provided.
Example 5
as shown in fig. 5, the difference from embodiment 4 is that the radial bearings 11 are two groups, and a positioning ring is provided between the two radial bearings 11.
Example 6
As shown in fig. 6, the difference from embodiment 4 is that the radial bearings 11 are two in number.
Claims (10)
1. The shell split type anti-freezing cryogenic fluid rotary joint is characterized by comprising an end face sealing connecting flange, an outer sleeve, a rotary sealing positioning flange, a pan head tubular shaft 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 end face seal connecting flange, the outer sleeve, the rotary seal positioning flange, the coiled head pipe shaft and the outer sleeve end face seal, the pipe shaft rotary seal, the annular seal ring, the end face inner rotary seal and/or the end face outer rotary seal between the coiled head pipe shaft and the outer sleeve form a seal cavity, and the radial bearing is arranged in the seal cavity.
2. the split anti-freezing cryogenic fluid swivel joint of a shell according to claim 1, wherein a semicircular snap ring is coaxially arranged in the annular groove in the middle section of the pipe shaft of the pan head, 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 outer ring of the radial bearing, and the bearing positioning sleeve is embedded in the inner hole of the outer sleeve.
3. The shell split anti-freezing cryogenic fluid rotary joint according to claim 2, wherein a thrust bearing is arranged between the semicircular clamping ring and the rotary seal positioning flange, a shaft ring of the thrust bearing is sleeved on a coiled head 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 embedded in a groove in the upper end face of the rotary seal positioning flange.
4. The shell split anti-freezing cryogenic fluid swivel joint of claim 2, wherein the number of radial bearings is at least one, and the radial bearings are arranged between the outer sleeve and the coiled tubing shaft, so that the outer sleeve and the coiled tubing 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 pan head tubular shaft, 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.
5. The split shell anti-freezing cryogenic fluid rotary joint according to claim 1, wherein an annular groove is formed in the upper end face of the pan head pipe shaft, and an end face internal rotation sealing check ring is arranged in the annular groove.
6. The split shell anti-freezing cryogenic fluid rotary joint according to claim 1, wherein an end face internal rotary seal and/or an end face external rotary seal are arranged between the end face seal connecting flange and the pan head pipe shaft, the end face internal rotary seal is embedded in an inner hole of the end face internal rotary seal retainer ring, and the end face external rotary seal is embedded in an inner hole of the bearing positioning sleeve.
7. The shell split anti-freezing cryogenic fluid rotary joint according to claim 1, wherein the at least one pipe shaft rotary seal is coaxially sleeved on the pan head pipe shaft between the pan head pipe shaft and the rotary seal positioning flange; 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; and a dustproof ring frame flange is arranged in an annular groove at the lower end of the rotary seal positioning flange, and a tubular shaft dustproof ring is arranged in an inner hole of the dustproof ring frame flange.
8. The shell split anti-freezing cryogenic fluid rotary joint according to claim 1, wherein the end face sealing connecting flange and the pan head pipe 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 pipe 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 flange at a position close to the central hole, and a circular sealing ring is embedded in the stepped holes.
9. The shell split anti-freezing cryogenic fluid rotary joint as claimed in claim 1, wherein outer sleeve end face seals are respectively provided 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.
10. The shell split anti-freezing cryogenic fluid rotary joint according to claim 1, wherein the end face sealing connecting flange and the rotary sealing positioning flange are connected to two ends of the outer sleeve by a third fastening piece and a second fastening piece respectively; the dustproof ring frame flange is connected to the lower end face of the rotary sealing positioning flange through a fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920619649.XU CN209782247U (en) | 2019-04-30 | 2019-04-30 | Shell split type anti-freezing low-temperature fluid rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920619649.XU CN209782247U (en) | 2019-04-30 | 2019-04-30 | Shell split type anti-freezing low-temperature fluid rotary joint |
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| Publication Number | Publication Date |
|---|---|
| CN209782247U true CN209782247U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920619649.XU Active CN209782247U (en) | 2019-04-30 | 2019-04-30 | Shell split type anti-freezing low-temperature fluid rotary joint |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005956A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Shell split-type Anti-freezing cryogen rotary joint |
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2019
- 2019-04-30 CN CN201920619649.XU patent/CN209782247U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005956A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Shell split-type Anti-freezing cryogen rotary joint |
| CN110005956B (en) * | 2019-04-30 | 2023-12-22 | 鞍山市昱虎流体设备有限公司 | Shell split type anti-freezing low-temperature fluid rotary joint |
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