CN211998792U - Liquid loading and unloading crane pipe with rigid gas phase pipeline - Google Patents

Abstract

The utility model provides a liquid loading and unloading filling riser with rigidity gaseous phase pipeline, arm pipe in the liquid phase, outer arm pipe of liquid phase and liquid phase hang down the pipe, the exit end of arm pipe is connected through first rotary joint and the one end of outer arm pipe of liquid phase in the liquid phase, the liquid phase hangs down the pipe is connected to the other end of outer arm pipe of liquid phase, the parallel or nested gaseous phase that is equipped with of liquid phase hangs down the pipe, be connected with gaseous phase outer arm pipe on the gaseous phase hangs down the pipe, gaseous phase outer arm pipe intercommunication gaseous phase inner arm pipe, gaseous phase inner arm pipe and gaseous phase outer arm pipe are the rigid pipeline, the circulation passageway that it formed hangs down the pipe orientation gaseous phase and is the descending trend, be equipped with the second rotary joint of center of rotation and this extension coincidence on the extension line of first rotary joint rotation axis, gaseous phase outer arm pipe passes through second rotary joint and. The gas-phase inner arm pipe, the gas-phase outer arm pipe and the rigid connection mode between the gas-phase inner arm pipe and the gas-phase outer arm pipe do not form a drooping U-shaped section in the middle of the channel, and the defect that condensate is accumulated in the drooping U-shaped section easily formed in the middle of the channel due to flexible connection is overcome.

Description

Liquid loading and unloading crane pipe with rigid gas phase pipeline

Technical Field

The utility model relates to a liquid loading and unloading crane pipe, in particular to a liquid loading and unloading crane pipe with a rigid gas phase pipeline.

Background

The loading arm is a special device in the process of loading and unloading fluid in the petrochemical industry, and is also called a fluid loading and unloading arm. The movable equipment for transferring liquid medium between train, automobile tank car and trestle storage and transportation pipeline is characterized by high safety, flexibility and long service life. The common oil filling riser comprises a liquid phase inner arm pipe, a liquid phase outer arm pipe and a liquid phase vertical pipe. The liquid phase inner arm pipe and the liquid phase outer arm pipe can rotate relatively to change the angle between the liquid phase inner arm pipe and the liquid phase outer arm pipe, so that the positions can be flexibly adjusted. The loading and unloading crane pipe for harmful chemical substances such as liquefied petroleum gas, liquid ammonia, dimethyl ether and the like is required to be completely closed during loading and unloading, and is also provided with a gas phase pipe for collecting gas extruded by a tank car and the like due to liquid entering during filling. The gas phase pipe also generally comprises a gas phase inner arm pipe and a gas phase outer arm pipe which are respectively fixed relative to the liquid phase inner arm pipe and the liquid phase outer arm pipe. In order not to interfere the relative rotation of the liquid phase inner arm pipe and the liquid phase outer arm pipe, a hose connection is usually adopted between the gas phase inner arm pipe, the gas phase outer arm pipe and the gas phase vertical pipe, or the gas phase inner arm pipe is a hard pipe and the gas phase outer arm pipe is a hose, and the gas phase outer arm hose is used for connecting the gas phase inner arm hard pipe and the gas phase vertical pipe so as to freely bend when the liquid phase inner arm pipe and the liquid phase outer arm pipe rotate relatively, such as CN 205933206U. However, this hose connection method has a drawback that in order to accommodate the position change caused by the relative rotation of the gas phase inner arm pipe and the gas phase outer arm pipe, the length of the hose usually needs a certain margin, and a sagging U-shape is formed in the middle of the hose. The gas in the hose condenses and accumulates in the U-shaped area. Under the influence of the environment, condensate accumulated in the hose can volatilize to cause environmental pollution, or can be condensed due to low temperature to cause the blockage of a gas phase pipe, thereby influencing the next normal use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome the defect that gaseous phase inner boom pipe and gaseous phase outer boom pipe flexible coupling store up the condensate easily, provide a liquid loading and unloading oil filling riser with rigidity gaseous phase pipeline.

The utility model discloses a solve the technical scheme that above-mentioned technical problem adopted and be: a liquid loading and unloading crane pipe with a rigid gas phase pipeline comprises a liquid phase inner arm pipe, a liquid phase outer arm pipe and a liquid phase vertical pipe, wherein the liquid phase inner arm pipe is used for conveying liquid, the outlet end of the liquid phase inner arm pipe is connected with one end of the liquid phase outer arm pipe through a first rotary joint, the other end of the liquid phase outer arm pipe is connected with the liquid phase vertical pipe, the liquid phase vertical pipe is parallelly or nestedly provided with a gas phase vertical pipe, the gas phase vertical pipe is connected with a gas phase outer arm pipe which is relatively fixed with the liquid phase outer arm pipe, a gas phase inner arm pipe communicated with the gas phase outer arm pipe is arranged at a position which is relatively fixed with the liquid phase inner arm pipe, the gas phase inner arm pipe and the gas phase outer arm pipe are rigid pipelines, a circulation channel formed by the gas phase inner arm pipe and the gas phase outer arm pipe is downward inclined towards the direction of the gas phase vertical pipe, a second rotary joint with a rotation center coinciding with an extension, the gas phase outer arm pipe is communicated with the gas phase inner arm pipe through a second rotary joint.

The gas phase inner arm pipe and the gas phase outer arm pipe both comprise straight pipe sections which are horizontally arranged or are obliquely arranged downwards towards the direction of the gas phase vertical pipe.

The second rotary joint is fixed on an extension line of the rotary axis of the first rotary joint through a bracket.

The liquid phase inner arm pipe or the liquid phase outer arm pipe is sleeved with a jacket capable of forming a closed space with the outer wall of the liquid phase inner arm pipe or the liquid phase outer arm pipe, the second rotary joint is arranged on the jacket and communicated with the inner space of the jacket, and the gas phase outer arm pipe is communicated with the gas phase inner arm pipe through the second rotary joint and the inner space of the jacket.

The jacket is embedded outside the liquid phase inner arm pipe, the gas phase inner arm pipe is fixedly connected and communicated with the jacket, and the gas phase outer arm pipe is connected with a second rotary joint arranged on the jacket.

The liquid phase inner arm pipe comprises a horizontal part and a vertical part connected with the first rotary joint, and the clamping sleeve is arranged outside the vertical part or outside the horizontal part.

The gas-phase inner arm pipe is fixedly connected with the upper part of the jacket, and the second rotary joint is arranged below the jacket.

The second rotary joint comprises two connecting pipes which are nested together, and a rotary sealing element is arranged between the two connecting pipes.

The gas phase inner arm pipe is also connected with a gas phase outlet pipe fixed on the upright post through a gas phase rotary joint.

The liquid phase inner arm pipe is connected with a liquid phase inlet pipe fixed on the upright column through a liquid phase rotary joint, and the gas phase rotary joint and the liquid phase rotary joint are arranged on the same rotary axis.

The utility model has the advantages that: the gas phase inner arm pipe and the gas phase outer arm pipe are both rigid pipelines, and the rotation axes of the rotary joints between the gas phase inner arm pipe and the gas phase outer arm pipe and between the liquid phase inner arm pipe and the liquid phase outer arm pipe are coaxially arranged, so that the gas phase pipeline and the liquid phase pipeline cannot interfere with each other when the rotation angles are respectively changed. The gas-phase inner arm pipe, the gas-phase outer arm pipe and the rigid connection mode between the gas-phase inner arm pipe and the gas-phase outer arm pipe do not form a drooping U-shaped section in the channel, so that the problem of condensate accumulation is avoided.

On the basis of solving the problem, the utility model discloses further utilize the cover that presss from both sides that sets up on liquid phase inner arm pipe or liquid phase outer arm pipe to solve the cross problem in liquid phase route and the gas phase route trend. Compared with the mode that two pipelines are in turn-around by adopting a bent pipe at the intersection position, the structure mode is easier to determine the position of the pipeline so as to ensure that the first rotating joint and the second rotating joint are coaxially arranged. And the mode of fixedly mounting the clamp sleeve and the pipeline in a nested manner is stronger than the structural stability of two independent pipelines, so that the structural stability of the first rotary joint and the second rotary joint which are respectively arranged on the pipeline and the clamp sleeve which are nested together is higher, the coaxiality of the first rotary joint and the second rotary joint which is influenced by the displacement of the pipeline due to the deformation of a fixed support outside the pipeline and the like is not needed to be worried about, and the stability of the rotary structure of the two channels is ensured.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of the liquid loading/unloading arm of the present invention.

FIG. 2 is a schematic view of the structure of the jacket in the embodiment shown in FIG. 1.

Fig. 3 is a schematic structural view of a second embodiment of the liquid loading/unloading arm of the present invention.

Fig. 4 is a schematic view of the structure of the jacket in the embodiment shown in fig. 3.

Fig. 5 is a schematic view of an embodiment of a rotary joint.

The labels in the figure are: 1. liquid phase inner arm pipe, 2 liquid phase outer arm pipe, 3 liquid phase vertical pipe, 4, first rotary joint, 5 gas phase vertical pipe, 6 gas phase outer arm pipe, 7 gas phase inner arm pipe, 8, second rotary joint, 9, jacket, 10, adapter pipe, 11, rotary sealing element, 12, upright column, 13, gas phase rotary joint, 14, liquid phase rotary joint, 15, gas phase outlet flange, 16, liquid phase inlet flange, 17, sealing cover, 18 and transmission mechanism.

Detailed Description

The following describes embodiments of the present invention in detail with reference to the drawings.

As shown in figures 1 and 3, the liquid loading and unloading crane pipe of the utility model comprises a liquid phase pipeline and a gas phase pipeline, wherein, the liquid phase pipeline mainly comprises a liquid phase inner arm pipe 1, a liquid phase outer arm pipe 2 and a liquid phase vertical pipe 3 for conveying liquid. The outlet end of the liquid phase inner arm pipe 1 is connected with one end of the liquid phase outer arm pipe 2 through a first rotary joint 4, and the other end of the liquid phase outer arm pipe 2 is connected with a liquid phase vertical pipe 3. The first rotary joint 4 can be driven to rotate by a transmission mechanism 18 such as a pneumatic motor, and the like, so as to change the angle between the liquid-phase inner arm pipe 1 and the liquid-phase outer arm pipe 2. The gas phase pipeline comprises a gas phase inner arm pipe 7, a gas phase outer arm pipe 6 and a gas phase vertical pipe 5. The gas phase inner arm pipe 7 and the liquid phase inner arm pipe 1 are relatively fixed, the gas phase outer arm pipe 6 and the liquid phase outer arm pipe 2 are relatively fixed, and the gas phase vertical pipe 5 and the liquid phase vertical pipe 3 are nested as shown in figures 1 and 3, or the two are arranged in parallel. The gas phase outer arm pipe 6 is fixedly connected to the gas phase vertical pipe 5 and communicated with the interior of the gas phase vertical pipe. The utility model discloses well gas phase inner arm pipe 7 and gaseous outer arm pipe 6 are rigid pipeline (the difficult crooked pipeline usually of stereoplasm promptly), can not flagging form the low-lying section of U-shaped. The gas-phase inner arm pipe 7 and the gas-phase outer arm pipe 6 communicate with each other through a second rotary joint 8, and the second rotary joint 8 is provided on an extension line of the rotation axis of the first rotary joint 4, and the rotation center thereof coincides with the extension line of the rotation axis of the first rotary joint 4. Under the coaxial rotation of the first rotary joint 4 and the second rotary joint 8, the gas phase inner arm pipe 7 and the gas phase outer arm pipe 6, and the liquid phase inner arm pipe 1 and the liquid phase outer arm pipe 2 can synchronously rotate to change angles without mutual influence.

Because the gas phase inner arm pipe 7 and the gas phase outer arm pipe 6 can not droop to form a U-shaped low-lying position, and the circulation channel formed by the gas phase inner arm pipe 7 and the gas phase outer arm pipe 6 is in a descending trend towards the direction of the gas phase vertical pipe 5, gas in the gas phase pipeline can flow out along the pipeline after being condensed and can not be accumulated in the pipeline, and the problems of pollution, blockage and the like caused by accumulation of condensate are avoided.

In the embodiment shown in fig. 1 and 3, the gas phase inner arm tube 7 and the gas phase outer arm tube 6 are provided with straight tube sections which are arranged horizontally or inclined downwards towards the gas phase vertical tube 5, so that condensate can flow out smoothly.

In an embodiment of the invention, not shown in the drawings, the second rotary joint 8 can be fixed by means of a bracket on the extension of the axis of rotation of the first rotary joint 4. The gas-phase inner arm pipe 7 and the gas-phase outer arm pipe 6 are respectively connected with two ends of a second rotary joint 8. The gas phase pipeline consisting of the gas phase inner arm pipe 7 and the gas phase outer arm pipe 6 can bypass in a bent pipe mode to avoid cross interference when meeting the intersection of the gas phase pipeline and the liquid phase pipeline consisting of the liquid phase inner arm pipe 1 and the liquid phase outer arm pipe 2.

In another embodiment shown in fig. 2, the second rotary joint 8 is arranged on a jacket 9. The jacket 9 is sleeved outside the liquid phase inner arm pipe 1, and a closed space is formed between the jacket 9 and the outer wall of the liquid phase inner arm pipe 1. The second rotary joint 8 communicates with the jacket inner space. The gas phase inner arm pipe 7 is fixedly connected and communicated with the upper part of the jacket 9, the gas phase outer arm pipe 6 is connected with a second rotary joint 8 arranged below the jacket 9, and the gas phase outer arm pipe 6 is communicated with the gas phase inner arm pipe 7 through the second rotary joint 8 and the inner space of the jacket 9. In the structure, the jacket and the liquid-phase inner arm pipe 1 are arranged in a nesting mode, and two ends of the jacket and the liquid-phase inner arm pipe 1 are fixed into a whole, so that the structure stability is high. The second rotary joint 8 on the jacket can keep the position of the liquid phase inner arm pipe 1 and the first rotary joint 4 connected with the liquid phase inner arm pipe stable and unchanged, and always keep good coaxiality.

In the embodiment shown in fig. 2, the liquid phase inner arm pipe 1 comprises a horizontal part and a vertical part connected with the first rotary joint 4, wherein the "horizontal" and the "vertical" are only general directions and are not absolutely horizontal or vertical. The jacket 9 is arranged outside the vertical part. Because the first rotary joint 4 is connected to the vertical part of the liquid phase inner arm pipe 1, and the second rotary joint 8 is arranged at the lower end of the jacket 9, the first rotary joint 4 and the second rotary joint 8 are conveniently positioned to keep the first rotary joint and the second rotary joint concentric, for example, a section of pipeline can be concentrically fixed outside the vertical part of the liquid phase inner arm pipe 1, the upper end of the pipeline is closed, and the second rotary joint 8 is concentrically arranged at the lower end of the pipeline. In addition, in the structure, the connection structure of the gas-phase inner arm pipe 7 and the jacket 9 is relatively simple, and as shown in fig. 2, the gas-phase inner arm pipe 7 can be directly connected with the jacket after being horizontally extended without an elbow.

In another embodiment shown in fig. 4, the jacket 9 is also fitted around the outside of the liquid phase inner arm pipe 1, and unlike fig. 2, in fig. 4, the jacket 9 is provided outside the horizontal portion of the liquid phase inner arm pipe 1. At this time, the gas phase inner arm tube 7 needs to be connected to the jacket through an elbow.

Similar to the embodiment shown in fig. 2 and 4, the jacket 9 may be provided on the liquid phase outer arm pipe 2, and in this case, the gas phase inner arm pipe 7 is connected to the second rotary joint 8 provided on the jacket 9, and the gas phase outer arm pipe 6 is fixedly connected to the jacket 9 and communicates with the gas phase inner arm pipe 7 through the inner space of the jacket 9 and the second rotary joint 8.

As shown in fig. 5, an embodiment of the second rotary joint 8 may be used, which includes two connecting pipes 10 nested together and a rotary seal 11 disposed between the two connecting pipes, wherein the connecting pipes 10 may be separate pipes or may be a part of two pipes to be connected, such as the gas phase inner arm pipe 7 and the gas phase outer arm pipe 6. Of course, the second rotary joint 8 may be any other possible pipe sealing rotary connection. A similar structure may be adopted for the first rotary joint 4.

As shown in fig. 1, the gas phase inner arm pipe 7 is further connected with a gas phase outlet pipe fixed on the upright post 12 through a gas phase rotary joint 13, and the gas phase outlet pipe is provided with a gas phase outlet flange 15 for connecting with a gas phase collecting device. The liquid phase inner arm pipe 1 is connected with a liquid phase inlet pipe fixed on the upright post 12 through a liquid phase rotary joint 14, and the gas phase rotary joint 13 and the liquid phase rotary joint 14 are arranged with a rotary axis.

Claims (10)

1. The utility model provides a liquid loading and unloading arm pipe with rigidity gaseous phase pipeline, includes that the one end that is used for carrying liquid phase inner arm pipe (1), liquid phase outer arm pipe (2) and liquid phase of liquid phase to hang down pipe (3), the exit end of liquid phase inner arm pipe (1) is connected through first rotary joint (4) and liquid phase outer arm pipe (2), and liquid phase hangs down pipe (3) is connected to the other end of liquid phase outer arm pipe (2), liquid phase hang down pipe (3) parallel or nested gaseous phase that is equipped with and hangs down pipe (5), be connected with on the gaseous phase hangs down pipe (5) with liquid phase outer arm pipe (2) relatively fixed's gaseous phase outer arm pipe (6), be equipped with gaseous phase inner arm pipe (7) with gaseous phase outer arm pipe (6) intercommunication on the position with liquid phase inner arm pipe (1) relatively fixed, its characterized in that: arm pipe (7) and outer arm pipe of gaseous phase (6) are the rigid pipeline in the gaseous phase, the circulation passageway that arm pipe (7) and outer arm pipe of gaseous phase (6) formed is the decline trend towards gaseous phase vertical pipe (5) direction be equipped with rotation center and this second rotary joint (8) that extend the line coincidence on the extension line of first rotary joint (4) rotation axis, outer arm pipe of gaseous phase (6) through second rotary joint (8) and gaseous phase arm pipe (7) intercommunication.

2. A liquid handling riser having a rigid gas phase conduit as claimed in claim 1, wherein: the gas phase inner arm pipe (7) and the gas phase outer arm pipe (6) both comprise straight pipe sections which are horizontally arranged or are obliquely arranged downwards towards the direction of the gas phase vertical pipe (5).

3. A liquid handling riser having a rigid gas phase conduit as claimed in claim 1, wherein: the second rotary joint (8) is fixed on an extension line of the rotation axis of the first rotary joint (4) through a bracket.

4. A liquid handling riser having a rigid gas phase conduit as claimed in claim 1, wherein: the liquid phase inner arm pipe (1) or the liquid phase outer arm pipe (2) is sleeved with a jacket (9) capable of forming a closed space with the outer wall of the liquid phase inner arm pipe, the second rotary joint (8) is arranged on the jacket (9) and communicated with the inner space of the jacket, and the gas phase outer arm pipe (6) is communicated with the gas phase inner arm pipe (7) through the inner space of the second rotary joint (8) and the jacket (9).

5. A liquid handling riser having a rigid gas phase conduit as claimed in claim 4 wherein: the jacket (9) is embedded outside the liquid phase inner arm pipe (1), the gas phase inner arm pipe (7) is fixedly connected and communicated with the jacket (9), and the gas phase outer arm pipe (6) is connected with a second rotary joint (8) arranged on the jacket (9).

6. A liquid handling riser having a rigid gas phase conduit as claimed in claim 5 wherein: the liquid phase inner arm pipe (1) comprises a horizontal part and a vertical part connected with the first rotary joint (4), and the jacket (9) is arranged outside the vertical part.

7. A liquid handling riser having a rigid gas phase conduit as claimed in claim 5 wherein: the liquid phase inner arm pipe (1) comprises a horizontal part and a vertical part connected with the first rotary joint (4), and the clamping sleeve is arranged outside the horizontal part.

8. A liquid handling riser having a rigid gas phase conduit as claimed in claim 5 wherein: the gas-phase inner arm pipe (7) is fixedly connected with the upper part of the jacket (9), and the second rotary joint (8) is arranged below the jacket (9).

9. A liquid handling riser having a rigid gas phase conduit as claimed in any one of claims 1 to 8 wherein: the second rotary joint (8) comprises two connecting pipes (10) which are nested together, and a rotary sealing piece (11) is arranged between the two connecting pipes.

10. A liquid handling riser having a rigid gas phase conduit as claimed in claim 1, wherein: the gas phase inner arm pipe (7) is also connected with a gas phase outlet pipe fixed on the upright post (12) through a gas phase rotary joint (13); the liquid phase inner arm pipe (1) is connected with a liquid phase inlet pipe fixed on the upright post (12) through a liquid phase rotary joint (14), and the gas phase rotary joint (13) and the liquid phase rotary joint (14) are arranged with the rotary axis.

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