CN209876230U - Detachable anti-freezing low-temperature fluid rotary joint - Google Patents
Detachable anti-freezing low-temperature fluid rotary joint Download PDFInfo
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- CN209876230U CN209876230U CN201920618289.1U CN201920618289U CN209876230U CN 209876230 U CN209876230 U CN 209876230U CN 201920618289 U CN201920618289 U CN 201920618289U CN 209876230 U CN209876230 U CN 209876230U
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Abstract
The utility model belongs to cryogenic fluid equipment field, concretely relates to dismountable anti-freezing cryogenic fluid rotary joint. The technical scheme is as follows: the end face sealing connection flange and the rotary sealing positioning flange are respectively detachably connected to the upper end and the lower end of the outer sleeve; the rotary tubular shaft sealing disc is detachably connected to the upper end of the rotary tubular 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 seal dish and the overcoat end face seal between them, hollow shaft rotary seal, rotary pipe shaft end face seal, ring seal circle, terminal surface internal rotation seal, the outer rotary seal of terminal surface constitute sealed chamber, radial bearing sets up sealed intracavity, thereby avoid having the air and the rolling element contact of vapor to prevent to freeze. The utility model adopts a bearing structure, the rotation resistance is small, and the service life is long.
Description
Technical Field
The utility model belongs to cryogenic fluid equipment field, concretely relates to dismountable anti-freezing cryogenic fluid rotary joint.
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 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 inconvenient; 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.
SUMMERY OF THE UTILITY MODEL
The utility model provides a detachable anti-freezing cryogenic fluid rotary joint, all bearings are all arranged in the sealed intracavity, 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 technical scheme of the utility model as follows:
the detachable 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 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 rotary tubular shaft sealing disc is detachably connected to the upper end of the rotary tubular 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 seal dish and the overcoat end face seal between them, hollow shaft rotary seal, rotary pipe shaft end face seal, ring seal circle, terminal surface internal rotation seal, the outer rotary seal of terminal surface constitute sealed chamber, radial bearing sets up sealed intracavity, thereby avoid having the air and the rolling element contact of vapor to prevent to freeze.
Furthermore, the detachable 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 rotary 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.
Furthermore, the detachable 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 the rotary pipe shaft, the upper end face of the thrust bearing is limited on the lower end face of the semicircular clamping ring, and a seat ring of the thrust bearing is embedded in a groove in the upper end face of the rotary seal positioning flange.
Furthermore, the detachable anti-freezing cryogenic fluid swivel joint is characterized in that the number of the radial bearings is at least one, 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 part is limited on the lower end face of the sealing disk of the rotating tubular shaft, the lower end face of the inner ring of the radial bearing on the lower part is limited on the upper end face of the semicircular clamping ring, and the upper end face of the outer ring of the radial bearing on the upper part is limited on the lower end face of the bearing positioning sleeve.
Further, the detachable anti-freezing cryogenic fluid rotary joint is characterized in that an annular groove is formed in the upper end face of the sealing disc of the rotary pipe shaft, and an end face internal rotation sealing check ring is arranged in the annular groove.
Further, the detachable 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 rotary tubular shaft seal disc, 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 a bearing positioning sleeve.
Further, the detachable anti-freezing cryogenic fluid rotary joint is characterized in that 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; 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, in the detachable anti-freezing cryogenic fluid rotary joint, the end face sealing connecting flange, the rotary pipe shaft sealing disc and the rotary pipe shaft are respectively provided with a fluid channel central hole which is 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 rotary pipe shaft; the lower end face of the end face sealing connecting flange and the upper end face of the rotating tubular shaft sealing disc 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 the annular sealing ring is embedded in the stepped hole.
Furthermore, the detachable 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 end face sealing connecting flange and the rotary sealing positioning flange of the detachable anti-freezing cryogenic fluid rotary joint are respectively connected to two ends of the outer sleeve by 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 detachable anti-freezing cryogenic fluid rotary joint has solved current cryogenic fluid rotary joint and for preventing that the rolling element from freezing 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 the pan head rotating shaft adopts a split structure consisting of a rotary pipe shaft and a rotary pipe shaft sealing disk, so that the rotary joint is convenient to disassemble, assemble and maintain and 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 view of a first embodiment of a removable anti-freezing cryogenic fluid swivel;
figure 2 is a schematic structural view of a second embodiment of a removable anti-freezing cryogenic fluid swivel;
figure 3 is a schematic view of a third embodiment of a removable anti-freezing cryogenic fluid swivel;
figure 4 is a schematic structural view of a fourth embodiment of a removable anti-freezing cryogenic fluid swivel;
figure 5 is a schematic illustration of a fifth embodiment of a removable anti-freezing cryogenic fluid swivel;
figure 6 is a schematic illustration of a sixth embodiment of a removable 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 a rotating spool seal disk configuration;
FIG. 11 is a schematic view of a rotating pipe shaft structure.
Detailed Description
Example 1
As shown in fig. 1, the detachable anti-freezing cryogenic fluid rotary joint comprises an end face sealing connecting flange 22, an outer sleeve 11, a rotary sealing positioning flange 8, a rotary pipe shaft 1, a rotary pipe shaft sealing disc 15, a radial bearing 14 and a thrust bearing 10, wherein the end face sealing connecting flange 22 and the rotary sealing positioning flange 8 are respectively detachably connected to the upper end and the lower end of the outer sleeve 11; the rotary tubular shaft sealing disc 15 is detachably connected to the upper end of the rotary tubular shaft; the centrifugal bearing 14 is arranged between the rotating pipe shaft 1 and the outer sleeve 11, the end face sealing connecting flange 22, the outer sleeve 11, the rotating sealing positioning flange 8, the rotating pipe shaft 1, the rotating pipe shaft sealing disc 15 and the outer sleeve end face seal 9, the pipe shaft rotating seal 7, the rotating pipe shaft end face seal 16, the circular sealing ring 21, the end face inner rotating seal 20 and the end face outer rotating seal 18 between the rotating pipe shaft and the outer sleeve 11 form a sealing cavity, and all bearings are arranged in the sealing cavity to prevent air with water vapor from contacting with the rolling body so as to prevent freezing.
A semicircular snap ring 12 is coaxially arranged in an annular groove in the middle section of the rotary tubular shaft 1, a semicircular snap ring positioning sleeve 13 is sleeved outside the semicircular snap ring 12, a bearing positioning sleeve 17 is arranged between the end face sealing connecting flange 22 and the outer ring of the radial bearing 14, and the bearing positioning sleeve 17 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 rotating pipe shaft 1, so that the outer sleeve 11 and the rotating pipe 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 seal disk 15 of the rotating tubular shaft, 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 17.
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 rotatory 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.
The upper end surface of the rotating tubular shaft sealing disc 15 is provided with an annular groove, and an end surface internal rotation sealing retainer ring 19 is arranged in the annular groove. A combined sealing groove for placing the end face internal rotation seal 20 and the end face external rotation seal 18 is formed among the end face sealing connecting flange 22, the rotating tubular shaft sealing disc 15, the bearing positioning sleeve 8 and the end face internal rotation sealing retainer ring 19;
an end face internal rotation seal 20, an end face external rotation seal 18 and a circular seal ring 21 are arranged between the end face seal connecting flange 22 and the rotating tubular shaft seal disc 15, the end face internal rotation seal 20 is embedded in an inner hole of the end face internal rotation seal retainer ring 19, and the end face external rotation seal 18 is embedded in an inner hole of the bearing positioning sleeve 17.
The two pipe shaft rotary seals 7 are coaxially sleeved on the rotary pipe shaft 1 between the rotary pipe shaft 1 and the rotary seal positioning flange 8; tubular shaft rotary sealing pressing rings 5 are respectively arranged in grooves on the upper end surface and the lower end surface of the rotary sealing positioning flange 8; 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 22, the rotating pipe shaft sealing disc 15 and the rotating pipe shaft 1 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 22 and the lower end part of the rotating pipe shaft 1; the lower end face of the end face sealing connecting flange 22 and the end face of the rotating tubular shaft sealing disc upper 15 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, and the annular sealing ring 21 is embedded in the stepped holes.
And outer sleeve end face seals 9 are respectively arranged between the upper end of the outer sleeve 11 and the end face seal connecting flange 22 and between the lower end of the outer sleeve 11 and the rotary seal positioning flange 8.
The end face sealing connecting flange 22 and the rotary sealing positioning flange 8 are respectively connected to two ends of the outer sleeve 11 through a third fastening piece 23 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 detachable 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 rotary pipe shaft 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 rotary tubular shaft sealing disc is detachably connected to the upper end of the rotary tubular shaft; the rotary pipe shaft and set up radial bearing between the overcoat, end face seal flange, overcoat, rotary seal positioning flange, rotary pipe shaft seal dish and the overcoat end face seal between them, pipe 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 removable anti-freezing cryogenic fluid swivel joint of claim 1, wherein a semicircular snap ring is coaxially arranged in the annular groove in the middle section of the swivel pipe shaft, a semicircular snap ring locating sleeve is sleeved outside the semicircular snap ring, a bearing locating sleeve is arranged between the end face sealing connecting flange and the radial bearing outer ring, and the bearing locating sleeve is embedded in the outer sleeve inner hole.
3. The removable anti-freezing cryogenic fluid rotary joint of claim 2, wherein a thrust bearing is arranged between the semicircular snap ring and the rotary seal positioning flange, a shaft ring of the thrust bearing is sleeved on the rotary pipe shaft, the upper end face of the thrust bearing is limited on the lower end face of the semicircular snap 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 removable 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 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 part is limited on the lower end face of the sealing disk of the rotating tubular shaft, the lower end face of the inner ring of the radial bearing on the lower part is limited on the upper end face of the semicircular clamping ring, and the upper end face of the outer ring of the radial bearing on the upper part is limited on the lower end face of the bearing positioning sleeve.
5. A removable anti-freezing cryogenic fluid rotary joint according to claim 1 wherein the upper end surface of the rotating tubeshaft sealing disk is provided with an annular groove in which is provided an end surface internal rotation sealing land.
6. The removable anti-freezing cryogenic fluid rotary joint of claim 1, wherein an end face internal rotary seal and/or an end face external rotary seal are disposed between the end face seal connecting flange and the rotating pipe shaft seal disk, the end face internal rotary seal is embedded in an inner bore of the end face internal rotary seal retainer ring, and the end face external rotary seal is embedded in an inner bore of the bearing retainer ring.
7. The removable anti-freezing cryogenic fluid rotary joint of claim 1 wherein at least one tubular shaft rotary seal is coaxially sleeved on the rotary tubular shaft between the rotary tubular 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; 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 removable anti-freezing cryogenic fluid rotary joint of claim 1, wherein the end face sealing flange, the rotating pipe shaft sealing disc and the rotating pipe shaft are provided with fluid passage center holes which are communicated with each other, and welding interfaces are respectively arranged at the upper end of the end face sealing flange and the lower end of the rotating pipe shaft; the lower end face of the end face sealing connecting flange and the upper end face of the rotating tubular shaft sealing disc 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 the annular sealing ring is embedded in the stepped hole.
9. The removable anti-freezing cryogenic fluid swivel joint of claim 1, wherein a housing end face seal is provided between the housing upper end and the end face seal attachment flange, and between the housing lower end and the rotary seal positioning flange, respectively.
10. The removable anti-freezing cryogenic fluid swivel joint of claim 1, wherein the end face seal attachment flange and the rotary seal positioning flange are attached to the two ends of the outer sleeve by a third fastener and a second fastener, 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 |
|---|---|---|---|
| CN201920618289.1U CN209876230U (en) | 2019-04-30 | 2019-04-30 | Detachable anti-freezing low-temperature fluid rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920618289.1U CN209876230U (en) | 2019-04-30 | 2019-04-30 | Detachable anti-freezing low-temperature fluid rotary joint |
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| Publication Number | Publication Date |
|---|---|
| CN209876230U true CN209876230U (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920618289.1U Active CN209876230U (en) | 2019-04-30 | 2019-04-30 | Detachable anti-freezing low-temperature fluid rotary joint |
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| Country | Link |
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| CN (1) | CN209876230U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005887A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Dismountable Anti-freezing cryogen rotary joint |
| CN111726929A (en) * | 2020-05-25 | 2020-09-29 | 中国原子能科学研究院 | A switching subassembly for accelerating tube export |
-
2019
- 2019-04-30 CN CN201920618289.1U patent/CN209876230U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005887A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Dismountable Anti-freezing cryogen rotary joint |
| CN110005887B (en) * | 2019-04-30 | 2024-03-12 | 鞍山市昱虎流体设备有限公司 | Detachable anti-freezing low-temperature fluid rotary joint |
| CN111726929A (en) * | 2020-05-25 | 2020-09-29 | 中国原子能科学研究院 | A switching subassembly for accelerating tube export |
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