CN216896824U - Precise injection control device for long-distance pipeline high-molecular polymer drag reducer - Google Patents
Precise injection control device for long-distance pipeline high-molecular polymer drag reducer Download PDFInfo
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Abstract
A precise injection control device for a long-distance pipeline high-molecular polymer drag reducer relates to the technical field of the special use of crude oil and product oil long-distance pipeline drag reducer engineering for injecting chemical agents, namely the high-molecular polymer drag reducer, and comprises a drag reducer ton barrel, a PLC (programmable logic controller), a high-viscosity plunger metering pump and a circulating feed pump which are fixed on a skid-mounted leak-proof chassis, wherein an outlet on one side of the drag reducer ton barrel is communicated with an inlet of the circulating feed pump through a quick connecting hose, one path of an outlet pipeline of the circulating feed pump reflows to an inlet at the upper end of the drag reducer ton barrel through the quick connecting hose, the other path of the outlet pipeline is connected with the high-viscosity plunger metering pump, the front part of an outlet pipeline valve of the high-viscosity plunger metering pump is connected with a flowmeter, and the high-viscosity plunger metering pump are connected with the PLC through current signals; the utility model realizes the functions of on-line automatic fixed-ratio filling, flow on-line monitoring, pressure on-line monitoring, timed automatic cyclic feeding and overpressure and overflow alarming of the drag reducer.
Description
Technical Field
The utility model relates to the technical field of special use of crude oil and product oil long-distance pipeline transportation engineering for filling chemical agents, namely high-molecular polymer drag reduction agents, in particular to a precise injection control device for the long-distance pipeline high-molecular polymer drag reduction agents.
Background
It is known that, as the market demand of finished oil increases year by year with the economic development of the country, in the pipeline engineering of long-distance transportation of crude oil and finished oil, drag reducer is often required to be injected into the pipeline system for energy saving and efficiency improvement, so as to reduce the friction resistance and pressure loss of the long-distance transportation pipeline system, which is the most economic method for the high pipeline transportation on the premise of the present, generally the transportation efficiency is increased to 10-25%, and the pressure is reduced to 10-20%. The drag reducer is applied to a crude oil pipeline to increase the effect of increasing the transmission in the early 80 s in China, the high-molecular polymer drag reducer is basically an imported chemical agent, the technology of the drag reducer filling equipment is monopolized by foreign manufacturers for a long time, the cost of the imported drag reducer filling equipment is high, an in-situ PLC intelligent precise control system is not provided, the manual starting and stopping function can be realized only in situ, the automatic adjustment is realized through user central control or DCS (distributed control system) in a unified manner, and the drag reducer filling equipment has the defects of large on-site signal instrument wiring workload, long construction period and low integration degree.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model discloses a precise injection control device for a long-distance pipeline high-molecular polymer drag reducer.
In order to realize the purpose, the utility model adopts the following technical scheme:
the utility model provides a control device is annotated to precision of long distance pipeline high polymer drag reduction agent, including fixing drag reduction agent ton bucket on sled dress leak protection chassis, the PLC controller, high viscosity plunger metering pump and circulation feed pump, through the quick connect hose intercommunication between drag reduction agent ton bucket one side export and the circulation feed pump import, the export pipeline of circulation feed pump passes through the quick connect hose in one way and flows back to drag reduction agent ton bucket upper end entry, high viscosity plunger metering pump is connected to another way, the front portion of high viscosity plunger metering pump outlet pipeline valve is connected with the flowmeter, the flowmeter passes through current signal with the PLC controller with high viscosity plunger metering pump and is connected.
The precise injection control device for the long-distance pipeline high-molecular polymer drag reducer is characterized in that an anti-coagulation air compressor connected through a pipeline is arranged on a perforated pipe at the bottom of a drag reducer ton barrel, and a pipeline valve is arranged on the pipeline.
The precise injection control device for the long-distance pipeline high-molecular polymer drag reducer adopts a gear pump as a circulating feed pump, adopts a low-shearing force arc gear design with the speed reduction capability reaching 300r/min, and ensures that molecular chains of the drag reducer are not damaged by high-speed shearing.
The precise injection control device for the long-distance pipeline high polymer drag reducer is characterized in that another circulating feeding pump is connected in parallel between an inlet pipeline and an outlet pipeline of the circulating feeding pump.
The precise injection control device for the long-distance pipeline high molecular polymer drag reducer is characterized in that a pressure transmitter B is arranged on an outlet pipeline of the circulating feed pump.
The precise injection control device for the long-distance pipeline high molecular polymer drag reducer is characterized in that a pressure transmitter A and a pipeline pressure gauge which are installed through pipelines are arranged at the pipeline outlet of the high-viscosity plunger metering pump 4.
The precise injection control device for the high molecular polymer drag reducer of the long-distance pipeline is characterized in that a pulsation damper is arranged on a pipeline at the outlet of a high-viscosity plunger metering pump.
The precise injection control device for the long-distance pipeline high-molecular polymer drag reducer is characterized in that a back pressure valve is installed on an outlet pipeline of a circulating feed pump and communicated with a bypass pipeline, and a circulating feed pump outlet safety bypass assembly is installed on the bypass pipeline.
The precise injection control device for the long-distance pipeline high-molecular polymer drag reducer is characterized in that another high-viscosity plunger metering pump is connected in parallel between an outlet pipeline and an inlet pipeline of the high-viscosity plunger metering pump, an outlet safety valve is installed on an outlet bypass pipeline of the high-viscosity plunger metering pump connected in parallel, electric stroke controllers are installed on stroke adjusting structures of the two high-viscosity plunger metering pumps, and the electric stroke controllers are in signal connection with a PLC (programmable logic controller).
The precise injection control device for the high molecular polymer drag reducer of the long-distance pipeline is characterized in that a pipeline emptying valve is arranged on a bypass pipeline of an outlet pipeline of the high-viscosity plunger metering pump.
Due to the adoption of the technical scheme, the utility model has the following beneficial effects:
according to the precise injection control device for the long-distance pipeline high-molecular polymer drag reducer, automatic cyclic feeding is realized by adopting the cyclic feeding pump, and automatic injection is realized by matching the high-viscosity plunger metering pump with the electric stroke controller, so that the functions of on-line automatic fixed-ratio injection, on-line flow monitoring, on-line pressure monitoring, timed automatic cyclic feeding and overpressure and overflow alarm of the long-distance pipeline drag reducer are realized, and meanwhile, the device has the real-time communication of a remote DCS (distributed control system) central control room.
Drawings
Fig. 1 is a control schematic of the present invention.
In the figure: 1. a drag reducer ton drum; 2. an anti-settling air compressor; 3. a circulating feed pump; 4. a high viscosity plunger metering pump; 5. a PLC controller; 6. a flow meter; 7. a pressure transmitter A; 8. a pressure transmitter B; 9. a pulsation damper; 10. an outlet safety valve; 11. a pipeline pressure gauge; 12. a line evacuation valve; 13. a quick connection hose; 14. a back pressure valve; 15. a safety bypass assembly; 16. an electric stroke controller; 17. skid-mounted leakproof chassis.
Detailed Description
The present invention will be explained in detail by the following examples, which are disclosed for the purpose of protecting all technical improvements within the scope of the present invention.
The precise injection control device for the long-distance pipeline high-molecular polymer drag reducer comprises a drag reducer ton barrel 1, a PLC (programmable logic controller) 5, a high-viscosity plunger metering pump 4 and a circulating feed pump 3 which are fixed on a skid-mounted leakage-proof chassis 17, wherein an outlet on one side of the drag reducer ton barrel 1 is communicated with an inlet of the circulating feed pump 3 through a quick connecting hose 13, one path of an outlet pipeline of the circulating feed pump 3 reflows to an inlet at the upper end of the drag reducer ton barrel 1 through the quick connecting hose 13, the other path of the outlet pipeline is connected with the high-viscosity plunger metering pump 4, the front part of an outlet pipeline valve of the high-viscosity plunger metering pump 4 is connected with a flow meter 6, and the flow meter 6 is connected with the high-viscosity plunger metering pump 4 through a current signal with the PLC 5;
the drag reducer ton barrel 1 is used for storing and filling the drag reducer on site, the drag reducer is conveyed to the inlet of the circulating feed pump 3 through the quick connecting hose 13, one path of the outlet of the circulating feed pump 3 returns to the top of the drag reducer ton barrel 1, the drag reducer ton barrel 1 is a normal-pressure container, and the top is provided with an air vent to prevent the drag reducer from being sucked and deformed; the other path is connected with a high-viscosity plunger metering pump 4 to realize continuous pressurization to feed the high-viscosity plunger metering pump 4; the high-precision mass flow meter 6 is used for monitoring the filling flow of the drag reducer in real time on line, and the intelligent on-line closed-loop control of the filling concentration is realized by acquiring the signals of the on-line flow meter and comparing the signals with the actually required medicament flow through the PLC 5.
The precise injection control device for the long-distance pipeline high polymer drag reducer is characterized in that an anti-coagulation air compressor 2 connected through a pipeline is arranged on a perforated pipe at the bottom of a drag reducer ton barrel 1, and a pipeline valve is arranged on the pipeline; the anti-condensation air compressor 2 is automatically operated at regular time to aerate the drag reducer ton barrel 1, so that the anti-condensation function is achieved through stirring.
In the precise injection control device for the long-distance pipeline high-molecular polymer drag reducer, the circulating feed pump 3 is a gear pump, and the design of a low-shearing force arc gear with the speed reduction capability reaching 300r/min is adopted, so that the molecular chain of the drag reducer is not damaged by high-speed shearing.
The precise injection control device for the long-distance pipeline high polymer drag reducer is characterized in that another circulating feeding pump 3 is connected in parallel between an inlet pipeline and an outlet pipeline of the circulating feeding pump 3, so that the functions of one use and one standby are achieved.
The precise injection control device for the long-distance pipeline high polymer drag reducer is characterized in that a pressure transmitter B8 is installed on an outlet pipeline of the circulating feeding pump 3 and used for monitoring the pressure of the outlet pipeline of the circulating feeding gear pump 3 in real time on line and realizing a high-pressure alarm protection function.
The precise injection control device for the long-distance pipeline high polymer drag reducer is characterized in that a pressure transmitter A7 and a pipeline pressure gauge 11 which are installed through pipelines are arranged at the pipeline outlet of a high-viscosity plunger metering pump 4; the device is used for monitoring the filling pressure of the drag reducer in real time on line and realizing the high-pressure alarm protection function.
The precise injection control device for the long-distance pipeline high-molecular polymer drag reducer is characterized in that a pulsation damper 9 is arranged on a pipeline at the outlet of a high-viscosity plunger metering pump 4 and used for eliminating pulses generated by the high-viscosity plunger metering pump 4 during injection and realizing stable injection;
the precise injection control device for the long-distance pipeline high-molecular polymer drag reducer is characterized in that a backpressure valve 14 is installed on an outlet pipeline of a circulating feeding pump 3 and used for ensuring that a pipeline in front of the backpressure valve keeps constant pressure, continuous feeding is facilitated to an inlet branch pipeline of a high-viscosity plunger metering pump 4, a bypass pipeline is communicated with the outlet pipeline of the circulating feeding pump 3, a circulating feeding pump outlet safety bypass assembly 15 is installed on the bypass pipeline and used for ensuring the safety of a pipeline system in a mechanical mode and realizing an overpressure automatic pressure relief function.
According to the precise injection control device for the long-distance pipeline high-molecular polymer drag reducer, another high-viscosity plunger metering pump 4 is connected in parallel between an outlet pipeline and an inlet pipeline of the high-viscosity plunger metering pump 4, an outlet safety valve 10 is installed on an outlet bypass pipeline of the high-viscosity plunger metering pump 4 which is connected in parallel and used for ensuring the safety of a pipeline system in a mechanical mode, an overpressure automatic pressure relief function is realized, electric stroke controllers 16 are installed on stroke adjusting structures of the two high-viscosity plunger metering pumps 4, the electric stroke controllers 16 are connected with a PLC (programmable logic controller) through signals, and the intelligent online closed-loop control of the injection concentration is realized by acquiring online flowmeter signals through a PID (proportion integration differentiation) control adjusting method and comparing the online flowmeter signals with the actually required medicament flow; the PLC and the programming software can automatically store and record the accumulated operation data of the injection control device such as the operation time, the additive concentration, the flow online monitoring, the pressure online monitoring, the timing automatic cycle feeding, the overpressure and excess flow alarming and the like and the data of the shutdown state of the equipment, and remotely transmit the data to a user central control room for real-time monitoring through communication signals. And a bypass pipeline of an outlet pipeline of the high-viscosity plunger metering pump is provided with a pipeline exhaust valve 12 for temporarily flushing and discharging sewage when the high-viscosity plunger metering pump is stopped for a long time.
The present invention is not described in detail in the prior art.
The embodiments selected for the purpose of disclosing the utility model, are presently considered to be suitable, it being understood, however, that the utility model is intended to cover all variations and modifications of the embodiments falling within the scope of the inventive concept and the utility model.
Claims (10)
1. The utility model provides a control device is annotated to precision of long distance pipeline high polymer drag reducer, is including fixing drag reducer ton bucket, PLC controller, high viscosity plunger metering pump and the circulation feed pump on sled dress prevents leaking the chassis, characterized by: the outlet of one side of the drag reduction agent ton barrel is communicated with the inlet of the circulating feeding pump through a quick connection hose, one path of an outlet pipeline of the circulating feeding pump flows back to the inlet of the upper end of the drag reduction agent ton barrel through the quick connection hose, the other path of the outlet pipeline of the circulating feeding pump is connected with a high-viscosity plunger metering pump, the front part of an outlet pipeline valve of the high-viscosity plunger metering pump is connected with a flow meter, and the flow meter and the high-viscosity plunger metering pump are connected with a PLC through current signals.
2. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: and an anti-condensation air compressor connected through a pipeline is arranged on the perforated pipe at the bottom of the drag reducer ton barrel, and a pipeline valve is arranged on the pipeline.
3. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: the circular feeding pump is a gear pump, and the design of a low-shearing force arc gear capable of achieving a low rotating speed of 300r/min by adopting deceleration can ensure that molecular chains of the drag reducer are not damaged by high-speed shearing.
4. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: another circulating feeding pump is connected in parallel between the inlet pipeline and the outlet pipeline of the circulating feeding pump.
5. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: and a pressure transmitter B is arranged on an outlet pipeline of the circulating feed pump.
6. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: and a pressure transmitter A and a pipeline pressure gauge which are installed through pipelines are arranged at the pipeline outlet of the high-viscosity plunger metering pump.
7. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: and a pulsation damper is arranged on a pipeline at the outlet of the high-viscosity plunger metering pump.
8. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: the outlet pipeline of the circulating feeding pump is provided with a backpressure valve which is communicated with a bypass pipeline, and the bypass pipeline is provided with a circulating feeding pump outlet safety bypass assembly.
9. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: another high-viscosity plunger metering pump is connected in parallel between an outlet pipeline and an inlet pipeline of the high-viscosity plunger metering pump, an outlet safety valve is installed on an outlet bypass pipeline of the high-viscosity plunger metering pump connected in parallel, electric stroke controllers are installed on stroke adjusting structures of the two high-viscosity plunger metering pumps, and the electric stroke controllers are in signal connection with the PLC.
10. The precise injection control device of the long-distance pipeline high molecular polymer drag reducer as claimed in claim 1, wherein: and a pipeline emptying valve is arranged on a bypass pipeline of an outlet pipeline of the high-viscosity plunger metering pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220194158.7U CN216896824U (en) | 2022-01-25 | 2022-01-25 | Precise injection control device for long-distance pipeline high-molecular polymer drag reducer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220194158.7U CN216896824U (en) | 2022-01-25 | 2022-01-25 | Precise injection control device for long-distance pipeline high-molecular polymer drag reducer |
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| CN202220194158.7U Active CN216896824U (en) | 2022-01-25 | 2022-01-25 | Precise injection control device for long-distance pipeline high-molecular polymer drag reducer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117685507A (en) * | 2024-02-02 | 2024-03-12 | 新疆三叶管道技术有限责任公司 | Novel filling device of crude oil drag reducer |
| CN117685507B (en) * | 2024-02-02 | 2024-04-30 | 新疆三叶管道技术有限责任公司 | Filling device of crude oil drag reducer |
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2022
- 2022-01-25 CN CN202220194158.7U patent/CN216896824U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117685507A (en) * | 2024-02-02 | 2024-03-12 | 新疆三叶管道技术有限责任公司 | Novel filling device of crude oil drag reducer |
| CN117685507B (en) * | 2024-02-02 | 2024-04-30 | 新疆三叶管道技术有限责任公司 | Filling device of crude oil drag reducer |
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