CN103527168A - Throttle valve control system - Google Patents
Throttle valve control system Download PDFInfo
- Publication number
- CN103527168A CN103527168A CN201310505887.5A CN201310505887A CN103527168A CN 103527168 A CN103527168 A CN 103527168A CN 201310505887 A CN201310505887 A CN 201310505887A CN 103527168 A CN103527168 A CN 103527168A
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- module
- control system
- throttle valve
- control
- actuator
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Abstract
The invention relates to a throttle valve control system. The throttle valve control system comprises a control system, an actuator and a throttle valve, wherein the control system, the actuator and the throttle valve are sequentially connected in a circulation mode. The control system comprises a control module, an actuating module, a comparing module and a collecting module, wherein the control module, the actuating module, the actuator, the throttle valve, the collecting module and the comparing module are sequentially connected in a circulation mode. 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, comprise circulation connects in turn control system, actuator and choke valve, described control system comprises control module, Executive Module, comparison module and acquisition module, and described control module, Executive Module, actuator, choke valve, acquisition module and comparison module circulate and are connected in turn.
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-control module in figure; 2-Executive Module; 3-actuator; 4-choke valve; 5-acquisition module; 6-comparison module.
The specific embodiment
A kind of choke valve 4 electric-control systems of the present invention, control module 1, Executive Module 2, actuator 3, choke valve 4, acquisition module 5 and comparison module 6 circulate and are connected in turn.
During work, by control module 1, control signal is passed to actuator 3 modules, by Executive Module 2, control choke valve 4 actions, displacement transducer is recorded displacement signal to pass to acquisition module 5, after being sampled by collector, export result to comparison module 6, in comparison module 6, compare with the desired value of setting, then comparative result is exported to control module 1, by control module 1, information number is exported by display.
Claims (1)
1. a choke valve (4) electric-control system, comprise circulation connects in turn control system, actuator (3) and choke valve (4), it is characterized in that: described control system comprises control module (1), Executive Module (2), comparison module (6) and acquisition module (5), described control module (1), Executive Module (2), actuator (3), choke valve (4), acquisition module (5) and comparison module (6) circulate and are connected in turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505887.5A CN103527168A (en) | 2013-10-24 | 2013-10-24 | Throttle valve control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505887.5A CN103527168A (en) | 2013-10-24 | 2013-10-24 | Throttle valve control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103527168A true CN103527168A (en) | 2014-01-22 |
Family
ID=49929476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310505887.5A Pending CN103527168A (en) | 2013-10-24 | 2013-10-24 | Throttle valve control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103527168A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790924A (en) * | 2015-03-27 | 2015-07-22 | 中石化重庆涪陵页岩气勘探开发有限公司 | Device and method for remote regulation and control of petroleum and natural gas wellhead yield |
| 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 CN201310505887.5A patent/CN103527168A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104790924A (en) * | 2015-03-27 | 2015-07-22 | 中石化重庆涪陵页岩气勘探开发有限公司 | Device and method for remote regulation and control of petroleum and natural gas wellhead yield |
| 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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