CN103527169A - Throttle valve control system - Google Patents
Throttle valve control system Download PDFInfo
- Publication number
- CN103527169A CN103527169A CN201310505974.0A CN201310505974A CN103527169A CN 103527169 A CN103527169 A CN 103527169A CN 201310505974 A CN201310505974 A CN 201310505974A CN 103527169 A CN103527169 A CN 103527169A
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- CN
- China
- Prior art keywords
- controller
- throttle valve
- control system
- valve control
- choke valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Abstract
The invention relates to a throttle valve control system. The throttle valve control system comprises a controller, an actuator, a throttle valve, a collector and a comparator, wherein the controller, the actuator, the throttle valve, the collector and the comparator are sequentially connected in a circulation mode, the controller is connected with a displayer, and the throttle valve is connected with a displacement sensor. The throttle valve control system is simple in connection structure and high in practicality.
Description
Technical field
The present invention relates to a kind of throttle valve control system.
Background technology
Drilling well in bad ground, because the pressure window between fracture pressure (leakage pressure) and formation pore pressure (caving pressure) is narrow, is used conventional boring method to there will be the complex situations such as overflow or leakage.Conventional near balance pressure drilling mode is no longer suitable for the drilling well on narrow pressure window stratum, meticulous controlled pressure drilling technology is the drilling technology growing up for narrow pressure window situation, choke pressure control system is one of key technology of meticulous controlled pressure drilling, by controlling the aperture of choke valve, carry out control well mouth pressure, finally reach the object that quick control well bottom pressure fluctuates in safe range.Conventional throttling control mode has " PID+ proportional servo valve " and " PLC+PID+ high-speed switch valve " 2 kinds at present, these 2 kinds of modes all adopt hydraulic control scheme, but hydraulic control exists 3 aspects not enough: 1) fluid pressure line is complicated, between Hydraulic Elements and pipeline, easily there is seepage.2) hydraulic control be not suitable for to signal amplify, the occasion of the complex calculation such as memory and logic judgement.3) hydraulic system is subject to the impact of hydraulic oil self elasticity and ambient temperature, is difficult to realize the accurate control of the little displacement of choke valve (0～50 mm).
Summary of the invention
The present invention proposes the throttle valve control system that a kind of precision is higher.
A kind of throttle valve control system of the present invention, comprises circulation connects in turn controller, actuator, choke valve, collector and comparator, on described controller, connects display, is connected with displacement transducer on choke valve.
Preferably, in described actuator, be provided with Direct Travel controller, rated travel controller, normal thrust controller and time rating controller.
A kind of throttle valve control system of the present invention, the simple and practical property of syndeton is strong.
Accompanying drawing explanation
Fig. 1 is syndeton schematic diagram of the present invention.
1-controller in figure; 2-actuator; 3-choke valve; 4-collector; 5-comparator; 6-display; 7-displacement transducer.
The specific embodiment
A kind of throttle valve control system of the present invention, comprise circulation connects in turn controller 1, actuator 2, choke valve 3, collector 4 and comparator 5, on described controller 1, connect display 6, on choke valve 3, be connected with displacement transducer 7, in actuator 2, be provided with described in the present embodiment Direct Travel controller 1, rated travel controller 1, normal thrust controller 1 and time rating controller 1.
During work, by controller 1, control signal is passed to YE 2, by actuator 2, control Direct Travel controller 1 or rated travel controller 1 or normal thrust controller 1 or controller 1 work time rating of arranging, then drive choke valve 3 actions, displacement transducer 7 is recorded displacement signal to pass to collector 4, by exporting result to comparator 5 after collector 4 samplings, in comparator 5, compare with the desired value of setting, then comparative result is exported to controller 1, by controller 1, information number is exported by display 6.
Claims (2)
1. a choke valve electric-control system, it is characterized in that: comprise circulation connects in turn controller (1), actuator (2), choke valve (3), collector (4) and comparator (5), the upper display (6) that connects of described controller (1), is connected with displacement transducer (7) on choke valve (3).
2. a kind of choke valve electric-control system as claimed in claim 1, is provided with Direct Travel controller (1), rated travel controller (1), normal thrust controller (1) and controller time rating (1) in described actuator (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505974.0A CN103527169A (en) | 2013-10-24 | 2013-10-24 | Throttle valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505974.0A CN103527169A (en) | 2013-10-24 | 2013-10-24 | Throttle valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103527169A true CN103527169A (en) | 2014-01-22 |
Family
ID=49929477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310505974.0A Pending CN103527169A (en) | 2013-10-24 | 2013-10-24 | Throttle valve control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103527169A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191154A (en) * | 2016-03-15 | 2017-09-22 | 中国石油化工股份有限公司 | Wellhead back pressure regulates and controls method and apparatus |
-
2013
- 2013-10-24 CN CN201310505974.0A patent/CN103527169A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191154A (en) * | 2016-03-15 | 2017-09-22 | 中国石油化工股份有限公司 | Wellhead back pressure regulates and controls method and apparatus |
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