CN210716960U - Pressure pipeline for connecting containers - Google Patents

Abstract

The utility model provides a pipeline under pressure is used in container connection for carry first fluid, including first pipeline, first pipeline's one end is stretched into in the container, an outer tube has been cup jointed to first pipeline outside, the outer tube is located at least first pipeline with the juncture of container, just the outer tube with container sealing connection. Through set up an outer tube outside supplying the first pipeline of first fluid circulation, effectually avoided first pipeline with the connection defect that container lug connection caused has solved because the container basis subsides inhomogeneous, the liquid level undulant and expend with heat and contract with cold the container that arouse and the easy problem that produces fatigue destruction of first pipeline juncture for first fluid is difficult for producing the leakage at the circulation in-process, thereby has improved the security of container when using.

Description

Pressure pipeline for connecting containers

Technical Field

The utility model relates to a petrochemical field especially relates to a pipeline under pressure is used in container connection.

Background

In recent years, with the rapid development of domestic economy, the scale of construction of crude oil storage containers, product oil storage containers and chemical raw material storage containers is also increasing. The side wall of the container close to the bottom is provided with a connecting pressure pipeline for fluid circulation, the connecting pressure pipeline is generally directly welded with the container by adopting a steel pipe, the capacity of a single container of the current oil storage base reaches 10 ten thousand cubic meters, and the following problems are generally easily caused in the use process of a large container similar to the large container:

1) after filling with fluids such as petroleum, the container foundation can have uneven settlement due to the increase of weight, and the welding seam at the junction of the container and the steel pipe is easily subjected to larger stress, so that the junction of the steel pipe and the container is subjected to fatigue failure;

2) when fluid is output through the steel pipe, the steel pipe receives uneven circumferential force due to liquid level fluctuation, and fatigue damage can be caused to a welding seam at the junction of the container and the steel pipe;

3) because the steel pipe often needs to carry the fluid of higher temperature, because the thermal stress that expend with heat and contract with cold produced has aggravated the degree of steel pipe and container juncture fatigue failure, makes easily the steel pipe produces the leakage, influences the safe handling of container.

Therefore, it is necessary to develop a pressure pipe for connecting vessels to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure pipeline is used in container connection solves the container and is connected the problem of easily producing fatigue destruction rather than the juncture of using pressure pipeline, improves the security of container.

In order to achieve the above object, the utility model provides a pipeline under pressure is used in container connection for carry first fluid, including first pipeline, first pipeline's one end stretches into in the container, an outer tube has been cup jointed to first pipeline outside, the outer tube is located at least first pipeline with the juncture of container, just the outer tube with container sealing connection.

Furthermore, the first conveying pipeline is hermetically connected with one end, located in the container, of the outer pipe, the other end of the outer pipe is connected through a flange, and a closed isolation layer is arranged between the outer wall of the first conveying pipeline and the inner wall of the outer pipe.

Further, the isolation layer has a feed inlet and a discharge gate, and a second fluid passes through the feed inlet gets into the isolation layer and passes through the discharge gate is discharged the isolation layer, the temperature of second fluid is greater than the temperature of first fluid.

Furthermore, the other end of the first conveying pipeline is detachably connected with a second conveying pipeline.

Further, the second conveying pipeline comprises a plurality of straight pipes, two adjacent straight pipes are connected through elbows, and one adjacent two straight pipes are not parallel.

Furthermore, a compensator is connected between at least one straight pipe and the elbow, and the compensator can stretch along the axial direction of the straight pipe.

Furthermore, both ends of the compensator are connected with the elbow and the straight pipe through flanges.

Further, the plane pattern of the second conveying pipeline is L-shaped, Z-shaped or pi-shaped.

Further, the pressure pipeline for connecting the containers further comprises a stop valve, wherein the stop valve is arranged between the first conveying pipeline and the second conveying pipeline, and two ends of the stop valve are connected with the first conveying pipeline and the second conveying pipeline through flanges.

Furthermore, the pressure pipeline for connecting the containers further comprises a limiting support and a bearing support, the limiting support is arranged at the bottom of the first conveying pipeline and connected with the containers and used for limiting the axial displacement of the first conveying pipeline along the direction perpendicular to the outer pipe, and the bearing support is arranged at the bottom of the second conveying pipeline to support the second conveying pipeline.

The utility model provides an among the pipeline under pressure is used in the container is connected, including being used for supplying first pipeline of first fluid circulation, first pipeline's one end is stretched into in the container, an outer tube has been cup jointed to first pipeline outside, the outer tube is located at least first pipeline with the juncture of container, just the outer tube with container sealing connection. Through set up an outer tube outside supplying first fluid circulation's first pipeline, effectually avoided first pipeline with the connection defect that container lug connection caused has solved because the container basis subsides inhomogeneous, the liquid level undulant or expend with heat and contract with cold the container that arouse and the problem that first pipeline juncture easily produced fatigue destruction for first fluid is difficult for producing the leakage at the circulation in-process, thereby has improved the security when the container uses.

Drawings

Fig. 1 is a schematic structural view of a pressure pipe for connecting containers according to an embodiment of the present invention;

fig. 2 is a partially enlarged view of a first conveying pipeline according to an embodiment of the present invention;

wherein the reference numerals are:

10-a first delivery conduit; 20-a second delivery conduit; 30-a container; 40-a flange; 50-a shut-off valve; 60-a limit bracket; 70-a carrier support;

101-an outer tube; 201-bend; 202-straight pipe; 203-a compensator; 801-feed inlet; 802-discharge port; 803-an adapter.

Detailed Description

The following description of the embodiments of the present invention will be described in more detail with reference to the drawings. Advantages and features of the present invention will become apparent from the following description and claims. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1 and fig. 2, the present embodiment provides a pressure pipeline for connecting a container, which is used for conveying a first fluid, and includes a first conveying pipeline 10, one end of the first conveying pipeline 10 extends into a container 30, an outer pipe 101 is sleeved outside the first conveying pipeline 10, the outer pipe 101 is at least located at a junction between the first conveying pipeline 10 and the container 30, and the outer pipe 101 is hermetically connected to the container 30.

Through supplying the outer coaxial outer tube 101 that sets up of first pipeline 10 of first fluid circulation, the effectual first pipeline 10 of having avoided with the connection defect that container 30 lug connection caused has also been solved simultaneously because container 30 basis subsides inhomogeneous, the liquid level undulant or expend with heat and contract with cold the problem that the junction easily produces fatigue damage of container 30 and first pipeline 10 that arouses for first fluid is difficult for producing the leakage at the circulation in-process, thereby has improved the security when container 30 uses. It should be noted that the interface refers to the connection between the first conveying pipe 10 and the container 30, that is, it can be understood that the outer pipe 101 is only located at the connection between the first conveying pipe 10 and the sidewall of the container 30; alternatively, the outer pipe 101 extends over the entire outside of the first conveying pipe 10.

In this embodiment, the outer pipe 101 extends to cover the outer side of the whole first conveying pipe 10, and the length of the first conveying pipe 10 in the container 30 is greater than the length of the outer pipe 101 in the container 30, so that the first fluid can flow through the first conveying pipe 10, specifically, the length of the outer pipe 101 extending into the container 30 may be 250-500 mm, and the length of the first conveying pipe 10 extending into the container 30 is between one sixth and one third of the diameter of the container 30.

In particular, the first fluid includes, but is not limited to, petroleum, gas, or chemicals.

The first conveying pipe 10 is coaxially disposed with the outer pipe 101, and a fixing hole (not shown) is disposed on the container 30, the outer pipe 101 extends into the container 30 from the outside of the container 30 through the fixing hole and is connected with the container 30 in a sealing manner, the diameter of the outer pipe 101 matches the diameter of the fixing hole on the container 30 to prevent fluid leakage, and the sealing connection manner includes, but is not limited to, welding.

Referring to fig. 2, the first conveying pipeline 10 is hermetically connected to one end of the outer pipe 101 in the container 30, and the other end is connected through a flange 40, and a closed isolation layer is disposed between an outer wall of the first conveying pipeline 10 and an inner wall of the outer pipe 101. When the liquid level of the container 30 fluctuates, the stress generated by the vibration of the first conveying pipeline 10 is eliminated through the flange 40, and cannot directly act on the junction of the outer pipe 101 and the container 30, when the foundation of the container 30 is settled, the stress applied to the outer pipe 101 is eliminated through the flange 40, so that the influence on the first conveying pipeline 10 is avoided, the stress refers to the force in the radial direction of the first conveying pipeline 10, and the stress easily breaks the junction of the pipelines, so that the problems of leakage of the first fluid and the like are caused.

Further, the isolation layer has a feed inlet 801 and a discharge gate 802, feed inlet 801 reaches discharge gate 802 all is located outside the container, a second fluid passes through feed inlet 801 gets into the isolation layer and passes through discharge gate 802 discharges the isolation layer, the temperature of second fluid is greater than the temperature of first fluid. The second fluid includes, but is not limited to, water vapor or high temperature flue gas, and when the fluid flow rate in the container 30 is slow due to low temperature, the water vapor can be introduced into the isolation layer through the inlet to transfer heat so as to increase the temperature of the fluid, thereby increasing the flow rate of the fluid. Specifically, the first conveying pipeline 10 and the outer pipe 101 may adopt a jacketed pipe, the flange 40 is a jacketed flange matched with the jacketed pipe, and the jacketed flange is welded to the inner pipe and the outer pipe of the jacketed pipe respectively to eliminate stress.

Preferably, the insulating layer further has an adapter port 803, and the adapter port 803 is used for connecting with a heat exchange pipe (not shown) in the container 30, the heat exchange pipe is surrounded by the first fluid in the container 30, and the second fluid enters the heat exchange pipe through the adapter port 803 to transfer the heat of the second fluid to the first fluid, and the heat exchange pipe is, for example, a spiral upward pipe or a disc-shaped pipe.

With reference to fig. 1, the other end of the first conveying pipe 10 is detachably connected to a second conveying pipe 20, the detachable connection may be a flange connection, and the first fluid circulates between the first conveying pipe 10 and the second conveying pipe 20. The first conveying pipeline 10 is connected with the second conveying pipeline 20 through flanges 40, namely the first conveying pipeline 10 and one end connected with the second conveying pipeline 20 are respectively provided with a flange 40, the flange of the first conveying pipeline 10 is also the flange 40 for connecting an outer pipe 101 and the first conveying pipeline 10, the second conveying pipeline 20 is provided with a flange 40 matched with the second conveying pipeline, the two flanges 40 are butted, and the stress on the pressure pipeline for connection is eliminated through flange connection.

One end of the second transfer duct 20 may be connected to other fluid transport equipment, and when it is desired to fill the container 30 with the first fluid, the first fluid flows through the second transfer duct 20 to the first transfer duct 10, and when it is desired to discharge the first fluid from the container 30, the first fluid flows through the first transfer duct 10 to the second transfer duct 20. Further, the second conveying pipeline 20 comprises a plurality of straight pipes 202, two adjacent straight pipes 202 are connected through elbows 201, and one adjacent two straight pipes 202 are not parallel. Because the temperature of the fluid is high, the pressure pipeline for connecting the container is easy to expand with heat and contract with cold, particularly, the axial direction of the second conveying pipeline 20 is easy to generate thermal extension, so that the junction of the first conveying pipeline 10 and the second conveying pipeline generates stress and breaks the junction, the trend of the pressure pipeline for connecting the container is changed through the elbow 201 and the straight pipe 202, the elastic geometric shape formed by natural turning of the elbow 201 and the straight pipe 202 is utilized to compensate the axial thermal extension of the pressure pipeline for connecting the container, and the pressure pipeline for connecting the container is not easy to break, so that the pressure pipeline for connecting the container can be used for a long time.

Preferably, a compensator 203 is connected between at least one of the straight pipes 202 and the elbow 201, and the compensator 203 can extend and contract along the axial direction of the straight pipe 202. The thermal stress caused by thermal expansion and contraction can be better eliminated by adding the compensator 203, and the axial thermal elongation of the pressure pipeline for connecting the containers is compensated. Specifically, the compensator can be a corrugated pipe compensator, and the corrugated pipe compensator is a special compensator which is made of single-layer or multi-layer thin-wall metal pipes and has axial corrugations, and the corrugated pipe compensator compensates thermal elongation of a pipeline by utilizing corrugation deformation in work. The corrugated pipe compensator can be made of stainless steel so as to increase the corrosion resistance of the corrugated pipe compensator. The compensator 203 may be an axial type compensator, a transverse type compensator, or a combination thereof according to the difference of the eliminating force, which is not limited by the present invention, and the present invention also does not limit the number of the compensators 203.

Referring to fig. 1, flanges 40 are disposed at two ends of the compensator 203, and the compensator 203 is connected to the elbow 201 and the straight pipe 202 through the flanges 40. Specifically, another flange 40 matched with the flange is arranged at one end of the elbow 201 and one end of the straight pipe 202, and similarly, the flange 40 can be used for further eliminating stress generated by foundation settlement and liquid level fluctuation of the container 30.

Further, the second conveying pipe 20 has a planar pattern in an L shape, a Z shape, or a pi shape, i.e., it is understood that the planar view of the second conveying pipe 20 may be regarded as an L shape, a Z shape, or a pi shape having corners. Through the self trend that changes the pressure pipeline for the container is connected, utilize to compensate with elastic geometry promptly the axial thermal elongation of pressure pipeline for the container is connected, make the pressure pipeline for the container is connected is difficult to be destroyed, and what second pipeline 20 chooseed for use in this embodiment is pi shape pattern, and research and test show that the shape of pi type structure is the axisymmetric figure, and has more corners, and is better to the thermal stress's that expend with heat and contract with cold elimination effect that produces.

Referring to fig. 1, the pressure pipeline for connecting containers further includes a shut-off valve 50, the shut-off valve 50 is disposed between the first conveying pipeline 10 and the second conveying pipeline 20, flanges 40 are disposed at two ends of the shut-off valve 10, and the shut-off valve 50 is connected to the first conveying pipeline 10 and the second conveying pipeline 20 through the flanges 40. The shut-off valve 50 may be a master valve for controlling the flow of the fluid, or may be controlled by the shut-off valve 50 when the pressure line for connecting the vessels needs to be closed in an emergency. In this embodiment, one end of the shut-off valve 50 is connected to the first delivery pipe 10, and the other end is connected to an elbow 201.

Referring to fig. 1, the pressure pipeline for connecting containers further includes a limiting bracket 60 and a bearing bracket 70, the limiting bracket 60 is disposed at the bottom of the first conveying pipeline 10 and connected to the container 30 for limiting the axial displacement of the first conveying pipeline 10 along the direction perpendicular to the outer pipe 101, and the bearing bracket 70 is disposed at the bottom of the second conveying pipeline 20 for supporting the second conveying pipeline 20. Specifically, the limiting support 60 is used for limiting the displacement of the first conveying pipeline 10 in all directions except the axial direction of the outer pipe 101, and the outer pipe 101 can be limited by a U-shaped pipe clamp, so that the fatigue damage of the outer pipe 101 due to shaking is prevented, preferably, a steel plate can be welded on the side wall of the container 30, and the steel plate is connected with the limiting support 60 to enable the limiting support 60 to move synchronously when the base of the container 30 is settled, so that the axial stress is further reduced. The support bracket 70 is disposed at a middle position of the second conveying pipe 20 to support the second conveying pipe 20.

To sum up, the embodiment of the utility model provides a pipeline under pressure is used in container connection through the outer coaxial outer tube that sets up of first pipeline that supplies first fluid circulation, has avoided the lug connection of first pipeline and container, effectually avoided first pipeline with the connection defect that the container produced has solved because the container that the container basis subsides inhomogeneous, liquid level fluctuation or expend with heat and contract with cold arouse easily produces the problem of fatigue destruction with first pipeline juncture for the difficult production of fluid is leaked at circulation in-process, thereby has improved the security when container uses, will simultaneously second pipeline sets to pi type structure, can utilize the self of pipeline to move towards the thermal extension problem that compensation expend with heat and contract with cold brought, prevents the leakage of first fluid.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims (10)

1. The utility model provides a pressure pipeline for container is connected for carry first fluid, its characterized in that includes first pipeline, first pipeline's one end stretches into in a container, first pipeline outside cup joints an outer tube, the outer tube is located at least first pipeline with the juncture of container, just the outer tube with container sealing connection.

2. A pressure pipe for connecting a container according to claim 1, wherein the first transfer pipe is hermetically connected to the outer pipe at one end thereof in the container, and the other end thereof is connected to the outer pipe via a flange, and a closed insulating layer is provided between an outer wall of the first transfer pipe and an inner wall of the outer pipe.

3. The pressure line for connecting vessels of claim 2, wherein said barrier layer has an inlet and an outlet, a second fluid entering said barrier layer through said inlet and exiting said barrier layer through said outlet, said second fluid having a temperature greater than a temperature of said first fluid.

4. The pressure line for connecting vessels according to claim 1, wherein the other end of the first transfer line is detachably connected to a second transfer line.

5. A pressure pipe for connecting vessels according to claim 4, wherein said second feed pipe comprises a plurality of straight pipes, adjacent two of said straight pipes being connected by bends, and adjacent two of said straight pipes being non-parallel.

6. A pressure pipe for connecting vessels according to claim 5, wherein a compensator is connected between at least one of said straight pipes and said elbow, said compensator being capable of extending and contracting in the axial direction of said straight pipe.

7. A pressure pipe for connecting vessels according to claim 6, wherein both ends of said compensator are connected to said elbow and said straight pipe by flanges.

8. The vessel connecting pressure pipe according to claim 4, wherein the planar pattern of the second transfer pipe is L-shaped, Z-shaped, or pi-shaped.

9. The pressure pipe for connecting vessels according to claim 4, further comprising a shut-off valve provided between the first transport pipe and the second transport pipe, wherein both ends of the shut-off valve are connected to the first transport pipe and the second transport pipe via flanges.

10. The vessel connecting pressure pipe according to any one of claims 4 to 9, further comprising a limiting bracket and a supporting bracket, wherein the limiting bracket is disposed at the bottom of the first conveying pipe and connected to the vessel for limiting the displacement of the first conveying pipe in the direction perpendicular to the axial direction of the outer pipe, and the supporting bracket is disposed at the bottom of the second conveying pipe for supporting the second conveying pipe.

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