CN220726609U - Pump filling operation monitoring device for centrifugal pump - Google Patents
Pump filling operation monitoring device for centrifugal pump Download PDFInfo
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- CN220726609U CN220726609U CN202322508231.0U CN202322508231U CN220726609U CN 220726609 U CN220726609 U CN 220726609U CN 202322508231 U CN202322508231 U CN 202322508231U CN 220726609 U CN220726609 U CN 220726609U
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- exhaust
- exhaust barrel
- inlet pipe
- pump
- floating ball
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- 238000012806 monitoring device Methods 0.000 title claims abstract description 18
- 239000010779 crude oil Substances 0.000 claims abstract description 48
- 239000003921 oil Substances 0.000 claims abstract description 20
- 230000037452 priming Effects 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000005086 pumping Methods 0.000 description 17
- 239000007788 liquid Substances 0.000 description 10
- 230000005484 gravity Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
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- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The application discloses a priming operation monitoring device for a centrifugal pump, which belongs to the technical field of oil and gas gathering and transportation and comprises an exhaust barrel and a differential pressure transmitter, wherein the exhaust barrel is communicated with an inlet pipe, the differential pressure transmitter is connected with the exhaust barrel through the inlet pipe, a floating ball is arranged in the exhaust barrel, the density of the floating ball is smaller than that of crude oil, the upper end part of the exhaust barrel and the lower end part of the exhaust barrel are both funnel-shaped, and the diameters of the upper port of the exhaust barrel and the lower port of the exhaust barrel are both smaller than that of the floating ball; the inlet pipe is provided with a first gate valve for controlling the on-off of the inlet pipe, the first gate valve is positioned at a position of the differential pressure transmitter far away from the exhaust barrel, and the lower end part of the exhaust barrel is provided with a second gate valve for controlling the on-off of the lower end part of the exhaust barrel. The remote monitoring system has the effects of accurately judging, displaying intuitively and remotely monitoring, is suitable for the centrifugal pump priming operation of the crude oil gathering and conveying station, and can achieve the purposes of accurate, time-saving and intuitionistic priming operation monitoring.
Description
Technical Field
The application relates to the technical field of oil and gas gathering and transportation, in particular to a pumping operation monitoring device for a centrifugal pump.
Background
The centrifugal oil transfer pump is used as core equipment of a crude oil gathering and transferring station, the motor is used for driving the impeller in the pump to rotate at a high speed, the impeller drives the fluid in the pump to generate centrifugal force, and the pressure of the fluid rises after flowing through the volute in the pump, so that the mechanical energy of the motor is converted into fluid potential energy. It is worth noting that, because the gas gravity is less than the liquid gravity, the impeller can not throw out the gas due to rotation, and then vacuum is formed in the center of the impeller, namely, the liquid can not be sucked into the pump, so that the pump unit is easily damaged, and therefore, the centrifugal oil delivery pump needs to be subjected to pumping operation before starting.
At present, the pumping operation of a centrifugal oil transfer pump in a crude oil gathering and conveying station is not provided with a relatively perfect monitoring device, and an oil delivery worker usually determines the pumping time by long-term pumping starting experience or judges whether the pumping operation is finished or not through the liquid level increase of a large-capacity sewage tank.
However, the pumping operation is affected by the viscosity of crude oil, the ambient temperature, the liquid level of a storage tank and other factors, and the pumping time is difficult to accurately judge by simply relying on operation experience; if the volume of a dirty oil tank of the crude oil gathering and conveying station is far greater than the volume of a pump cavity, the redundant crude oil flows into the dirty oil tank after the pumping operation is finished, so that the liquid level of the redundant crude oil is obviously prolonged for a long time, and the crude oil gathering and conveying operation time is delayed; the defect that monitoring of the pump filling operation process of the centrifugal oil transfer pump is difficult exists.
Disclosure of Invention
The utility model provides a pump priming operation monitoring devices for centrifugal pump can provide the instruction of priming completion for operating personnel to the not enough that prior art exists, reaches optimizing process flow, saves operating time, promotes work efficiency's purpose.
The technical scheme for solving the technical problems is as follows:
the utility model provides a lavage operation monitoring devices for centrifugal pump, includes aiutage and differential pressure transmitter, aiutage intercommunication has the admission line, differential pressure transmitter is connected with aiutage through the admission line, be equipped with the floater in the aiutage, floater density is less than crude oil density, aiutage's upper end and aiutage's lower extreme all are funnel shape, aiutage's upper port and aiutage's lower port's diameter all are less than the diameter of floater; the inlet pipe is provided with a first gate valve for controlling the on-off of the inlet pipe, and the lower end part of the exhaust pipe is provided with a second gate valve for controlling the on-off of the lower end part of the exhaust pipe.
Further, the floating ball is made of polytetrafluoroethylene materials.
Further, the floating ball is a hollow sphere.
Further, the inlet pipe is communicated with the upper end part of the exhaust funnel.
Further, one end of the differential pressure transmitter far away from the inlet pipe and one end of the inlet pipe far away from the exhaust barrel are respectively communicated with the pump cavity through pump end exhaust pipelines, and the pump end exhaust pipelines are positioned at the top end of the pump cavity.
Further, the upper port of the exhaust funnel and the lower port of the exhaust funnel are respectively communicated with a dirty oil tank pipeline.
In summary, compared with the prior art, the beneficial effects of the technical scheme are as follows:
the utility model provides a pump priming operation monitoring devices for centrifugal pump, before using, the one end of differential pressure transmitter is linked together with the pump chamber through pump end exhaust line respectively with the one end of admission line earlier with operating personnel, again with the last port of aiutage and the lower port of aiutage be linked together with dirty oil tank line respectively, before carrying out the pump priming operation, first gate valve and second gate valve all are in the closed state, first operating personnel need open the second gate valve, make the lower tip of aiutage open, the crude oil in the aiutage flows the evacuation through the lower tip of aiutage, the floater falls to the bottom of aiutage this moment, then close the second gate valve, open first gate valve, accomplish the pump priming operation readiness for the aiutage. At this time, the pumping operation can be performed, an operator opens a liquid inlet pipe of the pump cavity to enable crude oil to start flowing into the pump cavity, and at this time, air in the pump cavity flows into the exhaust funnel through the inlet pipe and is discharged from an upper port of the exhaust funnel.
When the pump cavity is filled with crude oil, namely the air in the pump cavity is emptied, at the moment, the exhaust pipeline at the pump end starts to flow out of the crude oil, the crude oil flows into the exhaust barrel through the inlet pipe, and the crude oil cannot be directly discharged from the upper port of the exhaust barrel due to the gravity of the crude oil, so that the crude oil starts to be accumulated at the lower end part of the exhaust barrel, and the floating ball in the exhaust barrel gradually rises along with the rising of the liquid level of the crude oil under the action of the gravity. When the exhaust funnel is filled with crude oil, the floating ball reaches the top of the exhaust funnel, and the floating ball props against the upper port of the exhaust funnel under the action of buoyancy and crude oil static pressure because the top of the exhaust funnel is conical, so that the crude oil cannot be discharged out of the exhaust funnel.
At this time, since the vent pipe cannot discharge crude oil, the pressure inside the vent pipe is increased, and the pressure is close to the pressure in the pump-end vent line. The pressure difference between the two ends can be observed through a differential pressure transmitter connected between the pump end exhaust pipeline and the exhaust barrel, and the differential pressure transmitter sends a low pressure difference signal to an operator through a current signal, namely, the differential pressure transmitter indicates that the pump cavity is filled with crude oil. Then, the operator closes the first gate valve first and then opens the second gate valve, so that crude oil in the exhaust barrel is discharged through the lower port of the exhaust barrel and flows into the dirty oil tank pipeline, and at the moment, all pumping operation is completed, and the centrifugal oil transfer pump is ready to operate.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a schematic diagram showing a floating state of a floating ball in an exhaust funnel according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of an upper port of a float plug in an exhaust funnel according to an embodiment of the present application.
Reference numerals illustrate: 1. an exhaust pipe; 11. a floating ball; 2. a differential pressure transmitter; 3. a first gate valve; 4. a second gate valve; 5. an inlet tube; 6. a lower port; 7. an upper port; 8. a pump end exhaust line; 9. dirty oil tank pipeline.
Detailed Description
The principles and features of the present application are described below with reference to the drawings, the examples are illustrated for the purpose of explanation only and are not intended to limit the scope of the present application.
The embodiment of the application discloses a priming operation monitoring device for a centrifugal pump.
Referring to fig. 1-3, a pump priming operation monitoring device for a centrifugal pump comprises an exhaust barrel 1 and a differential pressure transmitter 2, wherein an inlet pipe 5 is communicated with the upper end part of the exhaust barrel 1, the differential pressure transmitter 2 is connected with the exhaust barrel 1 through the inlet pipe 5, a floating ball 11 is arranged in the exhaust barrel 1, the density of the floating ball 11 is smaller than that of crude oil, the upper end part of the exhaust barrel 1 and the lower end part of the exhaust barrel 1 are both funnel-shaped, and the diameters of an upper port 7 of the exhaust barrel 1 and a lower port 6 of the exhaust barrel 1 are both smaller than that of the floating ball 11.
One end of the differential pressure transmitter 2 far away from the inlet pipe 5 is communicated with the pump cavity through a pump end exhaust pipeline 8, the inlet pipe 5 far away from the exhaust barrel 1 is also communicated with the pump cavity through the pump end exhaust pipeline 8, and the pump end exhaust pipeline 8 is positioned at the top end of the pump cavity. The upper port 7 of the exhaust funnel 1 and the lower port 6 of the exhaust funnel 1 are respectively communicated with a dirty oil tank pipeline 9.
The inlet pipe 5 is provided with a first gate valve 3 for controlling the on-off of the inlet pipe 5, the first gate valve 3 is positioned at a position of the differential pressure transmitter 2 away from the exhaust funnel 1, the lower end part of the exhaust funnel 1 is provided with a second gate valve 4 for controlling the on-off of the lower end part of the exhaust funnel 1, and the second gate valve 4 is positioned between the lower end part of the exhaust funnel 1 and a dirty oil tank pipeline 9.
Before using the pumping operation monitoring device, an operator communicates one end of the differential pressure transmitter 2 and one end of the inlet pipe 5 with the pump cavity through the pump end exhaust pipeline 8, then communicates the upper port 7 of the exhaust pipe 1 and the lower port 6 of the exhaust pipe 1 with the dirty oil tank pipeline 9, before pumping operation, the first gate valve 3 and the second gate valve 4 are in a closed state, the operator needs to open the second gate valve 4 first to open the lower end of the exhaust pipe 1, crude oil in the exhaust pipe 1 flows out and empties through the lower end of the exhaust pipe 1, at the moment, the floating ball 11 falls to the bottom of the exhaust pipe 1, then the second gate valve 4 is closed, the first gate valve 3 is opened, and pumping operation preparation work of the exhaust pipe 1 is completed.
At this time, the pumping operation can be performed, the operator opens the liquid inlet pipe of the pump cavity to enable crude oil to start flowing into the pump cavity, and at this time, air in the pump cavity flows into the exhaust funnel 1 through the inlet pipe 5 and is discharged from the upper port 7 of the exhaust funnel 1. When the pump cavity is filled with crude oil, namely the air in the pump cavity is emptied, at the moment, the pump end exhaust pipeline 8 starts to flow out of the crude oil, the crude oil flows into the exhaust funnel 1 through the inlet pipe 5, and the crude oil cannot be directly discharged from the upper port 7 of the exhaust funnel 1 due to the gravity of the crude oil, so that the crude oil starts to be accumulated at the lower end part of the exhaust funnel 1, and the floating ball 11 in the exhaust funnel 1 gradually rises along with the rising of the liquid level of the crude oil under the action of gravity.
When the exhaust funnel 1 is filled with crude oil, the floating ball 11 reaches the top of the exhaust funnel 1, and the floating ball 11 props against the upper port 7 of the exhaust funnel 1 under the action of buoyancy and crude oil static pressure because the top of the exhaust funnel 1 is cone-shaped, so that crude oil cannot be discharged out of the exhaust funnel 1.
At this time, since the discharge of crude oil is impossible in the discharge vessel 1, the pressure in the discharge vessel 1 is increased, and the pressure is close to the pressure in the pump-side discharge line 8. The pressure difference between the two ends can be observed through the differential pressure transmitter 2 connected between the pump end exhaust pipeline 8 and the exhaust funnel 1, and the differential pressure transmitter 2 sends a low pressure difference signal to an operator through a current signal, namely, the crude oil is indicated to be filled in the pump cavity. Subsequently, the operator closes the first gate valve 3 and opens the second gate valve 4, so that the crude oil in the exhaust funnel 1 is discharged through the lower port 6 of the exhaust funnel 1 and flows into the dirty oil tank pipeline 9, and at this time, all pumping operations are completed, and the centrifugal oil transfer pump is ready to operate.
The floating ball 11 is made of polytetrafluoroethylene material, so that the floating ball 11 has the characteristic of extremely low friction coefficient, is not easy to be stuck by crude oil, and is convenient for the floating ball 11 to move in the exhaust funnel 1. The floating ball 11 is a hollow sphere, so that the floating ball 11 can conveniently move up and down by means of the self gravity and the buoyancy of crude oil.
The implementation principle of the pump priming operation monitoring device for the centrifugal pump is as follows: crude oil flows into the exhaust funnel 1 after the gas in the pump cavity is emptied, crude oil is accumulated in the exhaust funnel 1 at the moment, the floating ball 11 floats along with the liquid level of the crude oil, when the exhaust funnel 1 is filled with the crude oil, the floating ball 11 blocks the upper port 7 of the exhaust funnel 1, the internal pressure of the exhaust funnel 1 is changed, the pressure in the exhaust funnel 1 is close to the pressure in the exhaust pipeline 8 at the pump end at the moment, and the differential pressure transmitter informs a central control operator that the pumping operation is finished through a remote signal.
The foregoing description of the preferred embodiments of the present application is not intended to limit the utility model to the particular embodiments of the present application, but to limit the scope of the utility model to the particular embodiments of the present application.
Claims (6)
1. A priming operation monitoring device for a centrifugal pump, comprising: the oil-saving type oil-saving device comprises an exhaust barrel (1) and a differential pressure transmitter (2), wherein the exhaust barrel (1) is communicated with an inlet pipe (5), the differential pressure transmitter (2) is connected with the exhaust barrel (1) through the inlet pipe (5), a floating ball (11) is arranged in the exhaust barrel (1), the density of the floating ball (11) is smaller than that of crude oil, the upper end part of the exhaust barrel (1) and the lower end part of the exhaust barrel (1) are both funnel-shaped, and the diameters of an upper port (7) of the exhaust barrel (1) and a lower port (6) of the exhaust barrel (1) are both smaller than that of the floating ball (11); the inlet pipe (5) is provided with a first gate valve (3) for controlling the on-off of the inlet pipe (5), and the lower end part of the exhaust funnel (1) is provided with a second gate valve (4) for controlling the on-off of the lower end part of the exhaust funnel (1).
2. A priming operation monitoring device for a centrifugal pump according to claim 1, wherein: the floating ball (11) is made of polytetrafluoroethylene materials.
3. A priming operation monitoring device for a centrifugal pump according to claim 1, wherein: the floating ball (11) is a hollow sphere.
4. A priming operation monitoring device for a centrifugal pump according to claim 1, wherein: the inlet pipe (5) is communicated with the upper end part of the exhaust funnel (1).
5. A priming operation monitoring device for a centrifugal pump according to claim 1, wherein: one end of the differential pressure transmitter (2) far away from the inlet pipe (5) and one end of the inlet pipe (5) far away from the exhaust funnel (1) are respectively communicated with the pump cavity through a pump end exhaust pipeline (8), and the pump end exhaust pipeline (8) is positioned at the top end of the pump cavity.
6. A priming operation monitoring device for a centrifugal pump according to claim 1, wherein: the upper port (7) of the exhaust funnel (1) and the lower port (6) of the exhaust funnel (1) are respectively communicated with a dirty oil tank pipeline (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322508231.0U CN220726609U (en) | 2023-09-15 | 2023-09-15 | Pump filling operation monitoring device for centrifugal pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322508231.0U CN220726609U (en) | 2023-09-15 | 2023-09-15 | Pump filling operation monitoring device for centrifugal pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220726609U true CN220726609U (en) | 2024-04-05 |
Family
ID=90492330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322508231.0U Active CN220726609U (en) | 2023-09-15 | 2023-09-15 | Pump filling operation monitoring device for centrifugal pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220726609U (en) |
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2023
- 2023-09-15 CN CN202322508231.0U patent/CN220726609U/en active Active
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