CN214667579U - Horizontal-structure LNG conveying system rotary joint performance testing device - Google Patents
Horizontal-structure LNG conveying system rotary joint performance testing device Download PDFInfo
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- CN214667579U CN214667579U CN202120359229.XU CN202120359229U CN214667579U CN 214667579 U CN214667579 U CN 214667579U CN 202120359229 U CN202120359229 U CN 202120359229U CN 214667579 U CN214667579 U CN 214667579U
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Abstract
The utility model relates to a horizontal structure LNG low temperature conveying system rotary joint capability test device, a horizontal structure's LNG conveying system rotary joint capability test device, include: mounting a bracket; the low-temperature medium circulating mechanism is connected with the first flange and the second flange of the rotary joint and is configured to inject a low-temperature medium into the rotary joint; a bending moment applying mechanism configured to apply a bending moment to the rotary joint; an axial load applying mechanism configured to apply an axial load to the rotary joint; a radial load applying mechanism configured to apply a radial load to the rotary joint; and the circumferential rotation driving mechanism is configured to drive the rotary joint to perform reciprocating alternate motion clockwise and anticlockwise in the circumferential direction. The utility model discloses can carry out scientific and quantitative survey to rotary joint's running performance, especially can evaluate its long period operation process's fatigue condition, and then guarantee LNG rigidity unloading arm or LNG low temperature hose's rotary joint is at the fail safe nature of operation in-process.
Description
Technical Field
The utility model relates to a LNG conveying system's capability test device especially relates to a capability test device suitable for LNG rigidity unloading arm or LNG low temperature hose rotary joint.
Background
The LNG receiving terminal may be divided into a terrestrial receiving terminal and a marine receiving terminal. Terrestrial receiving terminals are now widely used worldwide and are still rapidly growing with increasing demand for natural gas. The offshore LNG receiving terminal is a new receiving terminal type proposed in recent years, and engineering examples are now available in the world. The offshore LNG receiving terminal may be further divided into a floating receiving terminal and a fixed receiving terminal, wherein the fixed receiving terminal is similar to the terrestrial receiving terminal. According to different LNG receiving terminal forms, the adopted LNG unloading modes are different.
A Floating Production Storage and offloading Unit (FLNG) is a Floating Production device for offshore Natural Gas field development, which is positioned at sea by a mooring system, has functions of exploiting, processing, liquefying, storing, and offloading Natural Gas, and realizes the exploitation and Natural Gas transportation of an offshore Natural Gas field by being used in combination with a Liquefied Natural Gas (LNG) ship. The development of the offshore gas field by using the FLNG ends the single mode that the offshore gas field can only be transported to the shore by adopting a pipeline, saves the transportation cost and does not occupy land space. In addition, the FLNG can be used for the second time after the exploitation of the gas field is finished and is arranged in other natural gas fields, so that the economic performance is higher.
The LNG conveying system mainly comprises two types, namely an LNG low-temperature hose and an LNG rigid unloading arm. If the differential motion problem between the FLNG and the carrier of the transport ship is difficult to effectively solve by the existing mooring technology and the traditional rigid discharge arm, a specially designed low-temperature outward-conveying discharge system is needed to meet the severe requirements of low temperature and shaking working conditions. The LNG low temperature hose synthesizes the advantage in aspects such as weight, pliability, corrosion resistance, heat-proof quality obviously, and during the outer defeated operation of FLNG, the effective mode of going is to adopt the cluster to lean on the mooring, is connected with the LNG transport ship through mooring cable promptly to use LNG low temperature hose to realize LNG and unload, when requiring LNG low temperature hose to bear the ultra-low temperature, still need overcome the influence of relative motion between FLNG and the LNG transport ship.
The LNG rigid unloading arm is an articulated pipeline system which is arranged on a wharf (or a floating terminal) and used for unloading, when an LNG transport ship arrives at a special wharf of a receiving station, LNG is fed into a storage tank of the receiving station through a liquid-phase unloading arm and an unloading pipeline by virtue of an unloading pump on the ship, and BOG gas in the storage tank returns to the LNG transport ship through a gas return pipeline and a gas-phase air return arm. The discharge arm and the return arm are identical in structure and generally comprise a process pipeline, a supporting structure and accessories thereof, such as a three-dimensional rotary joint, an outer arm, an inner arm, a top end rotary joint, a base vertical pipe, a rotary joint for connecting the inner arm and the base vertical pipe, and the like. The rigid discharging arm system has the characteristics of mature technology, reliable performance, application in practical engineering and the like, but has weaker motion compensation performance. In the LNG unloading arm operation process, the end part of the unloading arm is guided to be interconnected with the LNG ship receiving end through the traction line, so that accurate butt joint can be realized under the condition of relative motion, a hydraulic system of the unloading arm is controlled, and the unloading arm can bear the influence of speed and acceleration caused by ship motion.
In conclusion, the key technologies of the LNG low-temperature hose and the LNG rigid discharging arm relate to various links such as low-temperature material selection, molding manufacturing and sealing, test verification and the like. The material selection and structural design difficulty is large, the processing, manufacturing and performance testing work is difficult, the ultra-low temperature sealing, connection and leakage monitoring difficulty is high, and the whole set of low temperature conveying system has a complex structure and high safety requirement. The rotary joint is used as a key component of the LNG low-temperature conveying system and used for connection and matching between pipelines or devices of the low-temperature conveying system, and the performance of the rotary joint directly influences the safe and stable operation of the LNG low-temperature conveying system, so that the performance test of the rotary joint is particularly important. In the prior art, the performance evaluation of the rotary joint after machining and manufacturing is mostly implemented by the experience of a machining manufacturer, and a corresponding testing means is lacked. Because the rotary joint needs to bear larger mechanical load and long-period fatigue stress in the operation process of the LNG low-temperature conveying system, a scientific testing device and method must be adopted to test the operation performance of the rotary joint so as to ensure the safety and reliability of the rotary joint in the operation process.
SUMMERY OF THE UTILITY MODEL
To the above problem, the utility model aims at providing a LNG conveying system rotary joint capability test device of horizontal structure, it can carry out scientific quantitative survey to rotary joint's running performance, especially can evaluate its long period operation process's fatigue condition, and then guarantee LNG rigidity unloading arm or LNG low temperature hose's rotary joint at the fail safe nature of operation in-process.
In order to achieve the purpose, the utility model adopts the following technical proposal: the utility model provides a horizontal structure's LNG conveying system rotary joint capability test device, includes: the mounting bracket forms a mounting base of each part; the low-temperature medium circulating mechanism is connected with a first flange and a second flange of the horizontally placed rotary joint and is configured to circularly inject a low-temperature medium into the inner cavity of the rotary joint; a bending moment applying mechanism configured to apply a bending moment to the rotary joint; an axial load applying mechanism configured to apply an axial load to the rotary joint; a radial load applying mechanism configured to apply a radial load to the rotary joint; a circumferential rotation driving mechanism configured to drive the rotary joint to reciprocate clockwise and counterclockwise in a circumferential direction alternately.
The LNG transfer system rotary joint performance test device, preferably, the installing support includes: a horizontal base; the vertical bracket is arranged at one end of the horizontal base; and one end of the outlet pipeline connecting piece is fixedly connected with the inner side of the vertical support, and the other end of the outlet pipeline connecting piece forms a suspended end.
Preferably, the cryogenic medium circulation mechanism includes: the low-temperature medium outlet pipeline is horizontally arranged above the horizontal base close to one side of the vertical support, one end of the low-temperature medium outlet pipeline is fixedly connected with the suspended end of the outlet pipeline connecting piece through a connecting blind plate, and the other end of the low-temperature medium outlet pipeline is connected with a second flange of the rotary joint, so that the rotary joint is horizontally arranged; the low-temperature medium inlet pipeline is also horizontally arranged above the horizontal base, and one end of the low-temperature medium inlet pipeline is connected with the first flange of the rotary joint; the low-temperature medium outlet and the low-temperature medium inlet are respectively arranged on the low-temperature medium outlet pipeline and the low-temperature medium inlet pipeline; the low-temperature medium storage tank, the low-temperature pump and the fluid supercharging device are arranged between the low-temperature medium discharge port and the low-temperature medium injection port and form a low-temperature medium closed loop with the low-temperature medium storage tank through a pipeline extension section and a valve.
Preferably, the bending moment applying mechanism includes: one end of the inlet pipeline connecting piece is fixedly connected with the other end of the low-temperature medium inlet pipeline, and the other end of the inlet pipeline connecting piece forms a suspended end; the supporting clamping sleeve is rotatably connected to the periphery of the suspended end of the inlet pipeline connecting piece through a bearing in the supporting clamping sleeve; the first hydraulic cylinder is arranged on the horizontal base below the support clamping sleeve through a support piece, the action end of the first hydraulic cylinder is connected with the support clamping sleeve, and the first hydraulic cylinder is configured to apply bending moment to the rotary joint through the telescopic movement of the action end of the first hydraulic cylinder.
Preferably, the axial load applying mechanism includes: the slide way supporting box body is arranged on the horizontal base positioned on the outer side of the supporting clamping sleeve, and a slide way extending along the axial direction of the rotary joint is formed on the slide way supporting box body; the tension limiting block is arranged on the slideway of the slideway supporting box body in a sliding mode and can be locked at any position of the slideway; one end of the pull rope is connected with the pull limiting block through a pull rope connecting block which can rotate freely in the circumferential direction, and the other end of the pull rope penetrates through the slideway supporting box body and then is connected with the outer end face of the suspended end of the inlet pipeline connecting piece; therefore, the pulling force borne by the pulling rope can be adjusted by adjusting the position of the pulling force limiting block in the slideway, and further, the axial pulling force load, namely the axial load borne by the rotary joint, can be applied to the rotary joint.
Preferably, the radial load applying mechanism includes: and the second hydraulic cylinder is arranged on the horizontal base right below the middle position of the rotary joint, the action end of the second hydraulic cylinder can be in contact with the rotary joint, and the second hydraulic cylinder is configured to apply radial load to the rotary joint through the telescopic motion of the action end of the second hydraulic cylinder.
Preferably, the circumferential rotation driving mechanism includes: the motor is arranged on the horizontal base close to one side of the low-temperature medium inlet pipeline; one end of the crankshaft connecting rod mechanism is connected with the action end of the motor through a gearbox, and the other end of the crankshaft connecting rod mechanism is connected with the low-temperature medium inlet pipeline; therefore, the first flange of the rotary joint, the low-temperature medium inlet pipeline and the inlet pipeline connecting piece are driven to do circumferential clockwise and anticlockwise reciprocating alternate motion through the clockwise and anticlockwise alternate reciprocating motion of the motor and the action of the crankshaft connecting rod mechanism.
Preferably, the low-temperature medium is liquid nitrogen.
Preferably, an observation hole is formed in the middle of the rotary joint and used for observing the internal state of the rotary joint in the low-temperature test process.
The utility model discloses owing to take above technical scheme, it has following advantage: the utility model discloses to the performance test technical means that current LNG conveying system rotary joint faces, the critical problem that this industry of performance test device and method disappearance was waited for to solve urgently, rely on experience and practice that is engaged in relevant trade for many years, a LNG conveying system rotary joint performance test device and method of horizontal structure is proposed, it can carry out scientific and quantitative survey to rotary joint's running performance, especially can evaluate its long period operation process's fatigue condition, and then guarantee LNG rigidity discharge arm or LNG low temperature hose's rotary joint is at the fail safe nature of operation in-process, the defect of prior art has been overcome, solve trade key problem, it has guiding significance to the overall structure design optimization and the safety and stability operation of LNG rigidity discharge arm or LNG low temperature hose.
Drawings
Fig. 1 is a schematic structural diagram of a device for testing the performance of a rotary joint of an LNG transfer system having a horizontal structure according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the rotary joint.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the system or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used to define elements only for convenience in distinguishing between the elements, and unless otherwise stated have no special meaning and are not to be construed as indicating or implying any relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Before explaining in detail the utility model provides a LNG conveying system rotary joint capability test device of horizontal structure, at first carry out simple explanation to rotary joint's structure.
As shown in fig. 2, the rotary joint 10 mainly includes a first flange 10-1 and a second flange 10-2, under the action of an internal rotary bearing 10-3 (e.g., a ball bearing), the first flange 10-1 and the second flange 10-2 can respectively perform circumferential rotation motion, so as to achieve connection and matching between pipelines connected to two ends of the rotary joint 10 (e.g., when the pipelines at two ends of the rotary joint 10 are subjected to a torsional force, the torsional force can be counteracted by the rotary joint 10, and further the stress balance is maintained), and sealing in the circumferential motion process of the rotary joint 10 is achieved by sealing structures such as a main sealing ring 10-4, a secondary sealing ring 10-5, and a static sealing ring 10-6, so as to prevent leakage of low-temperature LNG.
As shown in fig. 1, the apparatus for testing the performance of the rotary joint of the horizontal LNG transfer system provided in this embodiment includes: the mounting bracket forms a mounting base of each part; the low-temperature medium circulating mechanism is connected with a first flange 10-1 and a second flange 10-2 of the horizontally placed rotary joint 10 and is configured to circularly inject a low-temperature medium into the inner cavity of the rotary joint 10; a bending moment applying mechanism configured to apply a bending moment to the rotary joint 10; an axial load applying mechanism configured to apply an axial load to the rotary joint 10; a radial load applying mechanism configured to apply a radial load to the rotary joint 10; and a circumferential rotation driving mechanism configured to drive the rotary joint 10 to reciprocate clockwise and counterclockwise in the circumferential direction.
In the above embodiment, preferably, the mounting bracket includes: a horizontal base 1-1; the vertical support 1-2 is arranged at one end of the horizontal base 1-1; one end of the outlet pipeline connecting piece 1-3 is fixedly connected with the inner side of the vertical support 1-2, and the other end of the outlet pipeline connecting piece 1-3 forms a suspended end.
In the above embodiment, preferably, the low-temperature medium circulation mechanism includes: the low-temperature medium outlet pipeline 2-1 is horizontally arranged above the horizontal base 1-1 close to one side of the vertical support 1-2, one end of the low-temperature medium outlet pipeline 1-1 is fixedly connected with the suspended end of the outlet pipeline connecting piece 1-3 through a connecting blind plate 7, and the other end of the low-temperature medium outlet pipeline 2-1 is connected with a second flange 10-2 of the rotary joint 10, so that the rotary joint 10 is horizontally arranged; the low-temperature medium inlet pipeline 2-2 is also horizontally arranged above the horizontal base 1-1, and one end of the low-temperature medium inlet pipeline 2-2 is connected with a first flange 10-1 of the rotary joint 10; the low-temperature medium outlet 2-3 and the low-temperature medium inlet 2-4 are respectively arranged on the low-temperature medium outlet pipeline 2-1 and the low-temperature medium inlet pipeline 2-2; the low-temperature medium storage tank, the low-temperature pump and the fluid supercharging device (not shown in the figure) are arranged between the low-temperature medium outlet 2-3 and the low-temperature medium inlet 2-4 and form a low-temperature medium closed loop with the low-temperature medium storage tank, the low-temperature pump and the fluid supercharging device through the pipeline extension section and the valve.
In the above embodiment, preferably, the bending moment applying mechanism includes: one end of the inlet pipeline connecting piece 3-1 is fixedly connected with the other end of the low-temperature medium inlet pipeline 2-2, and the other end of the inlet pipeline connecting piece 3-1 forms a suspended end; the supporting clamping sleeve 3-2 is rotatably connected to the periphery of the suspended end of the inlet pipeline connecting piece 3-1 through a bearing in the supporting clamping sleeve; the first hydraulic cylinder 3-3 is arranged on the horizontal base 1-1 below the support cutting sleeve 3-2 through a support part 3-4, the action end of the first hydraulic cylinder 3-3 is connected with the support cutting sleeve 3-2, and the first hydraulic cylinder 3-3 is configured to apply bending moment to the rotary joint 10 through the telescopic motion of the action end of the first hydraulic cylinder. In particular, by adjusting the first hydraulic cylinder 3-3 to extend the actuating end thereof, the rotary joint 10 can be provided with a vertically upward force load, i.e. a bending moment carried by the rotary joint 10.
In the above embodiment, preferably, the axial load applying mechanism includes: the slideway support box body 4-1 is arranged on the horizontal base 1-1 positioned at the outer side of the support cutting sleeve 3-2, and a slideway 4-2 axially extending along the rotary joint 10 is formed on the slideway support box body; the pulling force limiting block 4-3 is arranged on the slideway 4-2 of the slideway support box body 4-1 in a sliding manner and can be locked at any position of the slideway 4-2; one end of the pull rope 4-4 is connected with the pull limiting block 4-3 through a pull rope connecting block 4-5 which can rotate freely in the circumferential direction, and the other end of the pull rope 4-4 penetrates through the slideway supporting box body 4-1 and then is connected with the outer end face of the suspended end of the inlet pipeline connecting piece 3-1. Therefore, by adjusting the position of the tension limiting block 4-3 in the slideway 4-2, the tension borne by the pull rope 4-4 can be adjusted, and further, the axial tension load can be applied to the rotary joint 10, namely the axial load borne by the rotary joint 10.
In the above embodiment, preferably, the radial load applying mechanism includes: and the second hydraulic cylinder 5-1 is arranged on the horizontal base 1-1 right below the middle position of the rotary joint 10, the action end of the second hydraulic cylinder 5-1 can be in contact with the rotary joint 10, and the second hydraulic cylinder 5-1 is configured to apply radial load to the rotary joint 10 through the telescopic motion of the action end of the second hydraulic cylinder. Specifically, by adjusting the second hydraulic cylinder 5-1 to extend its operating end, the force load along the radial direction of the rotary joint 10, i.e. the radial load carried by the rotary joint 10, can be provided to the rotary joint 10.
In the above embodiment, preferably, the circumferential rotation driving mechanism includes: the motor 6-1 is arranged on the horizontal base 1-1 close to one side of the low-temperature medium inlet pipeline 2-2; one end of the crankshaft connecting rod mechanism 6-2 is connected with the action end of the motor 6-1 through a gearbox 6-3, and the other end of the crankshaft connecting rod mechanism 6-2 is connected with the low-temperature medium inlet pipeline 2-2; therefore, the first flange 10-1 of the rotary joint 10 is driven to do reciprocating alternate motion along the circumferential direction clockwise and anticlockwise together with the low-temperature medium inlet pipeline 2-2 and the inlet pipeline connecting piece 3-1 through the clockwise and anticlockwise alternate reciprocating motion of the motor 6-1 and the action of the crankshaft connecting rod mechanism 6-2. Because the supporting clamping sleeve 3-2 is connected with the suspended end of the inlet pipeline connecting piece 3-1 through a bearing in the supporting clamping sleeve, the rotating motion of the outlet pipeline connecting piece 3-1 cannot be influenced, and meanwhile, the pull rope connecting block 4-5 on the pull limiting block 4-3 can rotate freely, so that the integral rotating motion cannot be influenced.
In the above embodiment, preferably, the low-temperature medium is liquid nitrogen, because the temperature of the liquid nitrogen medium is about-196 ℃, the temperature of the LNG medium is about-172 ℃, the performance of the test device under the low-temperature working condition can be better reflected under the working condition of the temperature of the liquid nitrogen medium, and nitrogen is a non-combustible inert gas, so that the test device is safe and reliable.
In the above embodiment, preferably, a viewing hole 10-7 is formed in the middle of the rotary joint 10, and can be used for viewing the internal state of the rotary joint 10 during the low-temperature test.
Therefore, when the performance testing device for the rotary joint of the horizontal LNG conveying system provided by the embodiment works, bending moment is applied to the rotary joint 10 through retraction movement of the action end of the first hydraulic cylinder 3-3, axial load is applied to the rotary joint 10 through the tension limiting block 4-3 and the pull rope 4-4, radial load is applied to the rotary joint 10 through extension and retraction of the action end of the second hydraulic cylinder 5-1, and the application of the three forces can be equivalent to comprehensive force load applied to the rotary joint 10 in the actual operation process due to wind, wave and current environment, relative movement of a floating body and the like; on the basis, the motor 6-1 drives the crankshaft connecting rod mechanism 6-2 to realize the reciprocating alternate motion of the rotary joint 10 in the circumferential direction clockwise and anticlockwise so as to evaluate the long-period running performance of the rotary joint under the stress load.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (9)
1. The utility model provides a horizontal structure's LNG conveying system rotary joint capability test device which characterized in that includes:
the mounting bracket forms a mounting base of each part;
the low-temperature medium circulating mechanism is connected with a first flange (10-1) and a second flange (10-2) of the horizontally-placed rotary joint (10), and is configured to circularly inject a low-temperature medium into an inner cavity of the rotary joint (10);
a bending moment application mechanism configured to apply a bending moment to the rotary joint (10);
an axial load applying mechanism configured to apply an axial load to the rotary joint (10);
a radial load applying mechanism configured to apply a radial load to the rotary joint (10);
a circumferential rotation driving mechanism configured to drive the rotary joint (10) to reciprocate clockwise and counterclockwise in a circumferential direction.
2. The horizontal LNG transfer system rotary joint performance testing apparatus of claim 1, wherein the mounting bracket comprises:
a horizontal base (1-1);
the vertical bracket (1-2) is arranged at one end of the horizontal base (1-1);
one end of the outlet pipeline connecting piece (1-3) is fixedly connected with the inner side of the vertical support (1-2), and the other end of the outlet pipeline connecting piece (1-3) forms a suspension end.
3. The apparatus for testing the performance of a swivel of a horizontal LNG transfer system according to claim 2, wherein the cryogenic medium circulation mechanism comprises:
the low-temperature medium outlet pipeline (2-1) is horizontally arranged above the horizontal base (1-1) close to one side of the vertical support (1-2), one end of the low-temperature medium outlet pipeline (2-1) is fixedly connected with a suspended end of the outlet pipeline connecting piece (1-3) through a connecting blind plate (7), and the other end of the low-temperature medium outlet pipeline (2-1) is connected with a second flange (10-2) of the rotary joint (10), so that the rotary joint (10) is horizontally placed;
the low-temperature medium inlet pipeline (2-2) is also horizontally arranged above the horizontal base (1-1), and one end of the low-temperature medium inlet pipeline (2-2) is connected with a first flange (10-1) of the rotary joint (10);
the low-temperature medium outlet (2-3) and the low-temperature medium inlet (2-4) are respectively arranged on the low-temperature medium outlet pipeline (2-1) and the low-temperature medium inlet pipeline (2-2);
the low-temperature medium storage tank, the low-temperature pump and the fluid supercharging device are arranged between the low-temperature medium outlet (2-3) and the low-temperature medium inlet (2-4) and form a low-temperature medium closed loop with the low-temperature medium storage tank through a pipeline extension section and a valve.
4. The apparatus for testing the performance of the swivel joint of the horizontal LNG transfer system according to claim 3, wherein the bending moment applying mechanism comprises:
one end of the inlet pipeline connecting piece (3-1) is fixedly connected with the other end of the low-temperature medium inlet pipeline (2-2), and the other end of the inlet pipeline connecting piece (3-1) forms a suspension end;
the supporting clamping sleeve (3-2) is rotatably connected to the periphery of the suspended end of the inlet pipeline connecting piece (3-1) through a bearing in the supporting clamping sleeve;
the first hydraulic cylinder (3-3) is arranged on the horizontal base (1-1) below the support clamping sleeve (3-2) through a support piece (3-4), the action end of the first hydraulic cylinder (3-3) is connected with the support clamping sleeve (3-2), and the first hydraulic cylinder (3-3) is configured to apply bending moment to the rotary joint (10) through the telescopic movement of the action end of the first hydraulic cylinder.
5. The horizontal LNG transfer system rotary joint performance test apparatus according to claim 4, wherein the axial load applying mechanism includes:
the slide way supporting box body (4-1) is arranged on the horizontal base (1-1) positioned on the outer side of the supporting clamping sleeve (3-2), and a slide way (4-2) extending along the axial direction of the rotary joint (10) is formed on the slide way supporting box body;
the pulling force limiting block (4-3) is arranged on the slideway (4-2) of the slideway supporting box body (4-1) in a sliding mode and can be locked at any position of the slideway (4-2);
one end of the pull rope (4-4) is connected with the pull limiting block (4-3) through a pull rope connecting block (4-5) capable of rotating freely in the circumferential direction, and the other end of the pull rope (4-4) penetrates through the slideway supporting box body (4-1) and then is connected with the outer end face of the suspended end of the inlet pipeline connecting piece (3-1);
therefore, by adjusting the position of the tension limiting block (4-3) in the slideway (4-2), the tension borne by the pull rope (4-4) can be adjusted, and further, the axial tension load, namely the axial load borne by the rotary joint (10), can be applied to the rotary joint (10).
6. The horizontal LNG transfer system rotary joint performance test apparatus according to any one of claims 2 to 5, wherein the radial load applying mechanism comprises:
and the second hydraulic cylinder (5-1) is arranged on the horizontal base (1-1) right below the middle position of the rotary joint (10), the action end of the second hydraulic cylinder (5-1) can be in contact with the rotary joint (10), and the second hydraulic cylinder (5-1) is configured to apply radial load to the rotary joint (10) through the telescopic motion of the action end of the second hydraulic cylinder.
7. The horizontal LNG transfer system rotary joint performance test apparatus according to any one of claims 3 to 5, wherein the circumferential rotation driving mechanism includes:
the motor (6-1) is arranged on the horizontal base (1-1) close to one side of the low-temperature medium inlet pipeline (2-2);
one end of the crankshaft connecting rod mechanism (6-2) is connected with the action end of the motor (6-1) through a gearbox (6-3), and the other end of the crankshaft connecting rod mechanism (6-2) is connected with the low-temperature medium inlet pipeline (2-2);
therefore, the first flange (10-1) of the rotary joint (10) is driven to do reciprocating alternate motion clockwise and anticlockwise along the circumferential direction together with the low-temperature medium inlet pipeline (2-2) and the inlet pipeline connecting piece (3-1) through the alternating reciprocating motion clockwise and anticlockwise of the motor (6-1) and the action of the crankshaft connecting rod mechanism (6-2).
8. The horizontal LNG transfer system rotary joint performance test apparatus of any one of claims 1 to 5, wherein the cryogenic medium is liquid nitrogen.
9. The rotary joint performance testing device of a horizontal-type LNG transfer system according to any one of claims 1 to 5, wherein an observation hole (10-7) is provided at a central position of the rotary joint (10) to observe the internal state of the rotary joint (10) during cryogenic testing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120359229.XU CN214667579U (en) | 2021-02-09 | 2021-02-09 | Horizontal-structure LNG conveying system rotary joint performance testing device |
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| CN202120359229.XU CN214667579U (en) | 2021-02-09 | 2021-02-09 | Horizontal-structure LNG conveying system rotary joint performance testing device |
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| CN214667579U true CN214667579U (en) | 2021-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803549A (en) * | 2021-11-15 | 2021-12-17 | 中海油能源发展股份有限公司采油服务分公司 | Manual LNG (liquefied natural gas) conveying hose quick connection and disconnection device |
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2021
- 2021-02-09 CN CN202120359229.XU patent/CN214667579U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113803549A (en) * | 2021-11-15 | 2021-12-17 | 中海油能源发展股份有限公司采油服务分公司 | Manual LNG (liquefied natural gas) conveying hose quick connection and disconnection device |
| CN113803549B (en) * | 2021-11-15 | 2022-02-08 | 中海油能源发展股份有限公司采油服务分公司 | Manual LNG (liquefied natural gas) conveying hose quick connection and disconnection device |
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