CN214634468U - Crude oil pipeline conveying system - Google Patents
Crude oil pipeline conveying system Download PDFInfo
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- CN214634468U CN214634468U CN202022856929.8U CN202022856929U CN214634468U CN 214634468 U CN214634468 U CN 214634468U CN 202022856929 U CN202022856929 U CN 202022856929U CN 214634468 U CN214634468 U CN 214634468U
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Abstract
The utility model relates to a crude oil transportation technical field, concretely relates to crude oil pipeline conveying system, including main line, filter and centrifugal pump, set up the gas separation filter core in the filter, be provided with the bleeder line on the main line, be connected with the gas holder on the bleeder line, be connected with the gas pipeline between gas holder and the filter. Through setting up gas holder and branch pipeline for the gas that produces in the filter does not carry through the centrifugal pump, but separates through the gas separation filter core, gets into the gas holder after collecting, and directly gets into on the main pipe line of centrifugal pump oil outlet end one side, prevents that petroleum gas from causing the phenomenon that cavitation erosion or gas were tied up after getting into the centrifugal pump, has effectively reduced the maintenance number of times, has improved pipeline transportation's efficiency.
Description
Technical Field
The utility model belongs to the technical field of the crude oil transportation technique and specifically relates to exactly a crude oil pipeline conveying system.
Background
During the transportation of crude oil, a centrifugal pump is needed to realize the continuous transportation of the crude oil, and the crude oil needs to be filtered by a filter before entering the centrifugal pump to remove impurities possibly carried by the crude oil. During the transportation process of crude oil, especially light oil, when the light oil passes through a filter, petroleum gas is easily separated out due to the change of pressure, the separated petroleum gas is gathered in the filter and finally enters a centrifugal pump along with a pipeline, so that the phenomenon of cavitation erosion or cavitation binding of an impeller of the centrifugal pump can be caused, and even the centrifugal pump can be damaged in severe cases.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a crude oil pipeline conveying system avoids in the petroleum gas gets into the centrifugal pump to reduce the cavitation erosion or the gas of centrifugal pump and tie up the phenomenon.
In order to achieve the above object, the utility model provides a following technical scheme: a crude oil pipeline conveying system comprises a main pipeline, a filter, a centrifugal pump, a gas storage tank, branch pipelines and a gas pipeline; the filter and the centrifugal pump are sequentially connected to the main pipeline along the oil transportation direction; a gas separation filter element is arranged in the filter, an exhaust port is arranged on the filter, the gas separation filter element is communicated with the exhaust port, and the exhaust port is connected with a gas inlet of the gas storage tank through a gas pipeline; the gas storage tank is provided with a crude oil inlet and is connected to the branch pipeline through a crude oil inlet and a gas outlet; the two ends of the branch pipeline are respectively communicated with the main pipeline, and the branch pipeline is arranged on one side of the oil outlet end of the centrifugal pump. The gas separation filter core in the filter can separate the gas in the filter, the generated gas is conveyed to the gas storage tank through the gas exhaust port and the gas pipeline, the gas storage tank is connected to the branch pipeline, the conveyed crude oil can directly convey the gas in the gas storage tank into the main pipeline in a pressure feeding mode, the gas in the gas storage tank is enabled not to continue to be conveyed through the centrifugal pump, and the gas can be prevented from entering the centrifugal pump to cause damage to the centrifugal pump.
Further, the filter comprises a filter body, an end cover is arranged at the other end of the filter body, and an oil outlet is formed in the end cover; a first filter cylinder with an open end is sleeved in the filter body, a second filter cylinder with an open end is sleeved in the first filter cylinder, the open ends of the first filter cylinder and the second filter cylinder are nested in the end cover, and the open part of the second filter cylinder is communicated with an oil outlet of the filter; the gas separation filter element is arranged on one side, close to the oil outlet, in the second filter cylinder. The multistage filter section of thick bamboo can carry out more effective filtration to crude oil, and the crude oil that carries the petroleum gas after the filtration can realize the separation and the collection of petroleum gas when the gas separation filter core.
Further, the gas separation filter element comprises a plurality of gas collection filter plates with cavities, and the gas collection filter plates are made of gas-permeable and liquid-impermeable materials; the gas collecting filter plate is communicated with a vent pipe; the gas collecting filter plates are provided with a plurality of breather pipes as shafts; the second filter cylinder, the first filter cylinder and the side wall of the filter body are provided with through holes, and the vent pipe penetrates through the through holes to be connected with the exhaust port. The effective collection and transportation of the petroleum gas are convenient to realize.
Furthermore, a groove is formed in the inner wall of the exhaust port, a connecting lug is arranged at one end, located outside the filter, of the vent pipe, and the connecting lug is rotatably connected in the groove, so that the gas separation filter element can rotate in the filter. Utilize the impact force of crude oil itself can make the gas separation filter core obtain kinetic energy when crude oil passes through the gas separation filter core and take place to rotate for filterable effective area greatly increased, filterable more abundant, and the blocking phenomenon that the pivoted gas separation filter core still can prevent to probably take place, because the change of pressure differential, gas can enter into gas collection filter core, breather pipe and gas piping in proper order, finally is carried to the gas holder in.
The device further comprises a first control valve, a second control valve, a third control valve and a fourth control valve which are connected with the controller through leads; the first control valve is arranged on the main pipeline between the starting end of the branch pipeline and the tail end of the branch pipeline; the second control valve is arranged on a branch pipeline on one side of the crude oil inlet of the gas storage tank; the third control valve is arranged on a branch pipeline at one side of the air outlet of the air storage tank; the fourth control valve is disposed on the gas line.
Furthermore, a liquid level meter is arranged on the gas storage tank and connected with the controller through a lead, so that liquid level change in the gas storage tank can be conveniently detected.
Further, the material of the gas collection filter plate is a wire mesh or a micro-porous filter membrane to allow gas to pass through and block liquid from passing through.
Furthermore, the second control valve, the gas storage tank and the third control valve are sequentially connected to the branch pipeline along the oil transportation direction, so that the control of the branch pipeline is facilitated.
Furthermore, the branch pipeline is also connected with a buffer tank, the buffer tank is connected with the branch pipeline between the gas storage tank and the third control valve, and the buffer tank can be used for temporarily storing crude oil discharged from the gas storage tank.
Furthermore, the first control valve, the second control valve, the third control valve and the fourth control valve comprise a manual valve and an electromagnetic valve, and the controller is connected to the electromagnetic valve through a lead.
Compared with the prior art, the beneficial effects of the utility model are as follows: by arranging the gas storage tank and the branch pipelines, gas generated in the filter is not conveyed through the centrifugal pump, so that the phenomenon of cavitation erosion or gas binding caused after petroleum gas enters the centrifugal pump is prevented, the operation cost is effectively reduced, the maintenance frequency is reduced, the maintenance time is saved, and the pipeline transportation efficiency is improved; the gas collecting filter element is arranged in the filter, so that the gas separation process is optimized, and the petroleum gas can be discharged more fully.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic sectional view of the filter;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
fig. 4 is a schematic view of a gas collection cartridge.
The filter comprises a main pipeline 1, a main pipeline 2, a filter 3, a centrifugal pump 4, a branch pipeline 5, a first control valve 6, a second control valve 7, an air storage tank 8, a third control valve 9, a liquid level meter 10, a gas pipeline 11, a fourth control valve 12, a gas separation filter element 13, an air outlet 14, a connecting lug 15, a buffer tank 201, a filter body 202, an oil inlet 203, an oil outlet 204, an end cover 205, a first filter cylinder 206, a second filter cylinder 1201, a gas collection filter plate 1202, a vent pipe 501, a manual valve 502 and an electromagnetic valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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", "front end", "rear end", "both ends", "one end", "the other end" and the like 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 device or element to which the reference is made 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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or 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.
As shown in fig. 1 and 2, a crude oil pipeline transportation system includes a main pipeline 1 for transporting crude oil, a filter 2 and a centrifugal pump 3 sequentially connected to the main pipeline 1 along an oil transportation direction, a gas storage tank 7, a branch pipeline 4 and a gas pipeline 10; a gas separation filter element 12 is arranged in the filter 2, an exhaust port 13 is arranged on the filter 2, the gas separation filter element 12 is communicated with the exhaust port 13, and the exhaust port 13 is connected with an air inlet of the air storage tank 7 through a gas pipeline 10; a crude oil inlet, an air inlet and an air outlet are arranged on the air storage tank 7, the air storage tank 7 is connected to the branch pipeline 10 through the crude oil inlet and the air outlet, and the air outlet of the air storage tank 7 is used for discharging a mixture of crude oil and gas; the two ends of the branch pipeline 10 are respectively communicated with the main pipeline 1, the branch pipeline 10 is arranged on one side of the oil outlet end of the centrifugal pump 3, and the branch pipeline 10 is used for conveying crude oil into the gas storage tank 7 so as to pump the gas in the gas storage tank 7 into the main pipeline 1 on one side of the oil outlet end of the centrifugal pump 3.
As shown in fig. 2, the filter 2 includes a filter body 201, and an oil inlet 202 is provided at one end of the filter body 201; the other end of the filter body 201 is provided with an end cover 204, and the end cover 204 is provided with an oil outlet 203; a first filter cylinder 205 with an open end is connected in the filter body 1, a second filter cylinder 206 with an open end is connected in the first filter cylinder 205, crude oil entering from the oil inlet 202 sequentially passes through the first filter cylinder 205 and the second filter cylinder 206 to be fully filtered, the open ends of the first filter cylinder 205 and the second filter cylinder 206 are nested in the end cover 204, the open part of the second filter cylinder 206 is communicated with the oil outlet 203 of the filter 2, and the arrangement mode of the filter cylinders can effectively increase the entering, filtering and discharging rates of the crude oil; the gas separation cartridge 12 is disposed within second cartridge 206 on a side thereof adjacent to outlet port 203. After the crude oil is filtered in the filter 2, when the crude oil passes through the gas separation filter element 12, a part of kinetic energy carried by the crude oil is transmitted to the gas separation filter element 12, so that the gas separation filter element 12 rotates in the filter 2, the crude oil is filtered more fully and quickly, and the filtering area is effectively increased.
As shown in fig. 2 to 4, the gas separation cartridge 12 includes a plurality of hollow gas collection filter plates 1201, and the gas collection filter plates 1201 are made of gas-permeable and liquid-impermeable material; a vent pipe 1202 is communicated with the gas collection filter plate 1201; a plurality of gas collection filter plates 1201 are arranged by taking the vent pipe 1202 as an axis; the second filter cartridge 206, the first filter cartridge 205 and the side wall of the filter body 201 are provided with through holes, and the vent pipe 1202 is connected with the vent port 13 provided on the filter body 201 through the through holes to deliver the gas collected by the gas collection filter plate 1201 to the gas storage tank 7 through the vent port 13 and the gas pipeline 10.
As shown in fig. 3, a groove is formed on the inner wall of the exhaust port 13, a connection lug 14 is arranged at one end of the vent pipe 1202 positioned outside the filter 2, and the connection lug 14 is rotatably connected in the groove.
As shown in fig. 1, the system further comprises a first control valve 5, a second control valve 6, a third control valve 8 and a fourth control valve 11 which are connected with a controller (not shown in the figure) through leads. The first control valve 5 is arranged on the main pipeline 1 between the starting end of the branch pipeline 4 and the tail end of the branch pipeline 4, part of crude oil can pass through the branch pipeline 4 by controlling the opening degree of the first control valve 5, and the first control valve 5 is used for controlling the crude oil to enter the gas storage tank 7 so as to pump out gas stored in the gas storage tank 7. The second control valve 6 is arranged on the branch pipeline 4 at the crude oil inlet side of the gas storage tank 7, the third control valve 8 is arranged on the branch pipeline 4 at the gas outlet side of the gas storage tank 7, and the second control valve 6 and the third control valve 8 are used for controlling the original conveying in the branch pipeline 4. The fourth control valve 11 is arranged on the gas pipeline 10 and used for controlling gas conveying, the fourth control valve 11 is opened under a normal working state, gas in the filter 2 can enter the gas storage tank 7 through the gas pipeline 10, the gas storage tank 7 is filled with crude oil in advance, and the crude oil can be extruded out when the gas enters.
As shown in fig. 1, in order to detect the liquid level change of the crude oil in the gas storage tank 7, a liquid level meter 9 is arranged on the gas storage tank 7, and the liquid level meter 9 is connected with a controller (not shown in the figure) through a lead for reflecting the gas collection condition in the gas storage tank 7.
When in operation, the electromagnetic valves of the second control valve 6 and the third control valve 8 are in a closed state, the electromagnetic valves of the first control valve 5 and the fourth control valve 11 are in an open state, along with the transportation of crude oil, petroleum gas continuously enters the gas storage tank 7 through the gas pipeline 10, the gas storage tank 7 is filled with crude oil in advance, the crude oil is ejected when the gas enters the gas storage tank 7, when the level gauge 9 monitors that the pre-stored crude oil in the gas storage tank 7 is in a low liquid level state, the gas storage tank 7 is indicated to be filled with enough gas, the electromagnetic valve in the fourth control valve 11 is closed through the controller to stop the transportation of the gas, the electromagnetic valve in the first control valve 5 is switched to an opening degree of 45-85% of the range of the electromagnetic valve, preferably 75% of the range of the electromagnetic valve, and the electromagnetic valves in the second control valve 6 and the third control valve 8 are opened, at this time, a part of the crude oil in the main pipeline 1 passes through the branch pipeline 4, the gas in the gas storage tank 7 is pumped into the main pipeline 1, and the crude oil conveyed in the branch pipeline 4 is directly discharged into the main pipeline 1 without passing through the centrifugal pump 3, so that the gas can be prevented from entering the centrifugal pump 3.
The material of the gas collection filter plate 1201 may be a wire mesh, a micro-porous filter membrane or other materials capable of separating gas, and the gas collection filter plate 1201 may allow gas to pass through and block liquid from passing through, so as to realize the separation of gas.
As shown in fig. 1, in order to effectively contain crude oil pre-stored in the gas container 7 discharged as a result of gas entering the gas container 7, a buffer tank 15 is further connected to the branch line 4, and the buffer tank 15 is connected to the branch line 4 between the gas container 7 and the third control valve 8. Under normal transportation state, be the evacuation state in the buffer tank 15, along with the transport going on, the crude oil in gas tank 7 is extruded to gas, and the crude oil that extrudes flows into buffer tank 15, starts branch pipeline 4 afterwards and carries out crude oil transportation, the gas in the discharge gas tank 7, makes the gas tank 7 fill with crude oil and evacuation buffer tank 15 again after the gas discharge finishes.
As shown in fig. 1, the first control valve 5, the second control valve 6, the third control valve 8 and the fourth control valve 11 each include a manual valve 501 and a solenoid valve 502 connected in sequence along the oil transportation direction, the controller is connected to the solenoid valve 502 through a wire, and the manual valve 501 is in a normally open state during the transportation process.
The working principle is as follows: the utility model provides a crude oil pipeline conveying system, before conveying, the gas storage tank 7 is filled with crude oil in advance, and the buffer tank 15 is emptied; when in transportation, the manual valve is in a normally open state, the electromagnetic valve of the first control valve 5 and the electromagnetic valve of the third control valve 8 are in an open state when the oil is in normal transportation in the main pipeline 1, the gas in the filter 2 enters the gas storage tank 7, so that the crude oil in the gas storage tank 7 is discharged into the buffer tank 15, the liquid level meter 9 detects a low liquid level state, the control system receives a signal, controls to close the electromagnetic valve of the first control valve 5, opens the electromagnetic valve of the second control valve 6 and the electromagnetic valve of the third control valve 8, switches the opening degree of the electromagnetic valve of the first control valve 5, then a part of the crude oil in the main pipeline 1 enters the gas storage tank 7 through the branch pipeline 4, and ejects the gas accumulated in the gas storage tank 7 into the main pipeline 1 at the oil outlet end side of the centrifugal pump 3, thereby avoiding the gas from being transported through the centrifugal pump 3, and opens the electromagnetic valve of the fourth control valve 11 through the controller after the gas is exhausted, and closing the electromagnetic valve of the second control valve 6 and the electromagnetic valve of the third control valve 8, and switching the electromagnetic valve in the first control valve 5 to a fully open state to enable the crude oil to be continuously conveyed through the main pipeline 1.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A crude oil pipeline conveying system is characterized by comprising a main pipeline, a filter, a centrifugal pump, a gas storage tank, branch pipelines and a gas pipeline; the filter and the centrifugal pump are sequentially connected to a main pipeline along the oil transportation direction; a gas separation filter element is arranged in the filter, an exhaust port is arranged on the filter, and the gas separation filter element is communicated with the exhaust port; the exhaust port is connected with the air inlet of the air storage tank through a gas pipeline; the gas storage tank is provided with a crude oil inlet and is connected to the branch pipeline through a crude oil inlet and a gas outlet; the two ends of the branch pipeline are respectively communicated with the main pipeline, and the branch pipeline is arranged on one side of the oil outlet end of the centrifugal pump.
2. The crude oil pipeline transport system of claim 1, wherein the filter comprises a filter body, one end of which is provided with an oil inlet; the other end of the filter body is provided with an end cover, and an oil outlet is formed in the end cover; a first filter cylinder with an open end is sleeved in the filter body, a second filter cylinder with an open end is sleeved in the first filter cylinder, the open ends of the first filter cylinder and the second filter cylinder are nested in the end cover, and the open part of the second filter cylinder is communicated with an oil outlet of the filter; the gas separation filter element is arranged on one side, close to the oil outlet, in the second filter cylinder.
3. The crude oil pipeline transportation system of claim 2, wherein the gas separation filter element comprises a plurality of hollow gas collection filter plates made of gas permeable and liquid impermeable material; the gas collecting filter plate is communicated with a vent pipe; the gas collecting filter plates are provided with a plurality of breather pipes as shafts; the second filter cylinder, the first filter cylinder and the side wall of the filter body are provided with through holes, and the vent pipe penetrates through the through holes to be connected with an air outlet formed in the filter body.
4. The crude oil pipeline transportation system according to claim 3, wherein the inner wall of the exhaust port is provided with a groove, and one end of the vent pipe, which is positioned outside the filter, is provided with a connection lug which is rotatably connected in the groove.
5. The crude oil pipeline transportation system according to claim 1, further comprising a first control valve, a second control valve, a third control valve and a fourth control valve connected to the controller by wires; the first control valve is arranged on the main pipeline between the starting end of the branch pipeline and the tail end of the branch pipeline; the second control valve is arranged on a branch pipeline on one side of the crude oil inlet of the gas storage tank; the third control valve is arranged on a branch pipeline at one side of the air outlet of the air storage tank; the fourth control valve is disposed on the gas line.
6. The crude oil pipeline transportation system according to claim 3, wherein a liquid level meter is arranged on the gas storage tank, and the liquid level meter is connected with the controller through a lead.
7. The crude oil pipeline transportation system according to claim 3, wherein the material of the gas collection filter plate is a wire mesh or a micro-filtration membrane.
8. The crude oil pipeline transport system according to claim 1, wherein a buffer tank is further connected to the branch line, and the buffer tank is connected to the branch line between the gas storage tank and the third control valve.
9. The crude oil pipeline transportation system according to claim 5, wherein the first control valve, the second control valve, the third control valve and the fourth control valve each comprise a manual valve and a solenoid valve connected in sequence along the oil transportation direction, and the controller is connected to the solenoid valves through leads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022856929.8U CN214634468U (en) | 2020-12-03 | 2020-12-03 | Crude oil pipeline conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022856929.8U CN214634468U (en) | 2020-12-03 | 2020-12-03 | Crude oil pipeline conveying system |
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| Publication Number | Publication Date |
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| CN214634468U true CN214634468U (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022856929.8U Active CN214634468U (en) | 2020-12-03 | 2020-12-03 | Crude oil pipeline conveying system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114155693A (en) * | 2021-12-02 | 2022-03-08 | 华南蓝天航空油料有限公司 | Oil delivery pipeline air intake early warning method and early warning system |
-
2020
- 2020-12-03 CN CN202022856929.8U patent/CN214634468U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114155693A (en) * | 2021-12-02 | 2022-03-08 | 华南蓝天航空油料有限公司 | Oil delivery pipeline air intake early warning method and early warning system |
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