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Fluid multi-pipeline collecting transmission and distribution control system and control method
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An automatic control system and multi-pipeline technology, applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of restricting the development of fluid transmission and distribution, labor-saving follow-up, poor controllability, and large technical defects, etc. , to achieve the effect of solving the problem of transmission and distribution metering accuracy and improving follow-up
Inactive Publication Date: 2009-03-11
张永华 +1
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Problems solved by technology
The operation and control of this multi-pipeline collective transmission and distribution mode is currently mostly operated by manual, electric or pneumatic valves, and its control requires human operation. The latter two methods are only labor-saving, follow-up, and poor in regulation, which restricts fluid transmission and distribution. develop
Although proportional control technology has been introduced in some dynamic multi-component transmission and distribution systems, its technical defects are relatively large, especially the control and deviation correction methods, which make the transmission and distribution still in a rough state. In order to solve this multi-pipeline transmission and distribution For the automatic control and precise control of the system, we have researched and tested the automatic control and adjustment technology (device) dominated by standard flow data (signal), so that the purpose can be realized
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Embodiment 1
[0085] Setting: The flow rate changes within the full flow range, the two materials D and d are mixed, the delivery ratio d:D=1:8, the flow rate is from small to maximum, and after a certain period of time, it is finally constant at the large pipeline D4 / 5 Working under the flow rate, assuming that after a certain period of time, the working large pipeline D circuit fails, how to deal with it.
[0086] See attached figure 1 , 2 , first determine the working pipeline. In this example, D1, D2, and D4 are determined as the main flow pipeline, and d1 is the auxiliary flow pipeline.
[0087] 1. Open the manual valves 5, 6, 7, and 8 of all pipelines first, so that the pipelines are in a preparatory working state;
[0088] 2. Supply power to the center console, press the j1, j2, j4, and jd buttons of the local control panel, turn the solenoid valve control panel to automatic, and check whether each part is normal.
[0089] 3. Set the d / D ratio 1:8 on the summation control LQ18, s...
Embodiment 2
[0096] attached image 3 , 4 , the control part is basically attached with figure 2 , but there are few pipelines, one kind of conveying medium, the pipeline control design is basically the same, Dd1 and Dd2 are one open and one standby, among which Dd3 is a small diameter pipeline, the system summation controller 18 only acts as a constant flow limiting function, and the system does not have PLC2 Analytical ratio detector.
[0097] Setting: The flow rate is within the range of the full flow range, the flow rate is from small to large, and the final flow rate is set within the flow range of the small pipeline. Confirm: Dd1 and Dd3 work.
[0098] 1. First open the manual valves 5, 6, 7, and 8 of Dd1, Dd2, and Dd3 pipelines, so that the pipelines are in a preparatory working state;
[0099] 2. Supply power to the center console, press the j1 and j3 buttons on the local control panel, turn the solenoid valve control panel to automatic, and check whether all parts are normal. ...
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Abstract
The invention relates to a fluid multi-pipeline collective transmission and distribution automatic controlsystem and a control method, belonging to the field of pipeline fluid transmission and distribution technique; the fluid multi-pipeline collective transmission and distribution automatic controlsystem is characterized in that: the multi-pipeline transmission and distribution is provided; the pipeline carries out the path number design with the transmission and distribution fluid according to the total flux and the working state; the automatic controlsystem comprises a pipeline transmission and distribution system and a pipeline transmission and distribution control system which is connected with the pipeline transmission and distribution system; the fluid multi-pipeline collective transmission and distribution automatic control system and the control system adopt multi-pipeline, one-running and one-standby or multi-running and one-standby during the transmission and distribution of one-system and multi-component fluid fixed proportion or single-component fixed quantity fluid, have different pipeline transmission and distribution types of pipe diameters and used for distributing the multi-path dynamic working condition fluid; the flux data is used as the leading, the automatic adjustment can be carried out according to the total flux, the transmission and distribution flux of the main conveying fluid and the auxiliary conveying fluid can be controlled, the automatic control rectifying capability is provided, and the transmission and distribution measuring precision problem caused by great flux change in the prior art is solved, and the exactness, preciseness and in-time performance of the control are effectively improved.
Description
1. Technical field [0001] The invention relates to an automatic control system and a control method for multi-pipeline collective transmission and distribution of fluid, belonging to the technical field of pipeline fluid transmission and distribution. 2. Background technology [0002] Fluid transportation usually sets the pipediameter according to the flow rate. Different pipe diameters in the same working condition convey different amounts of fluid per unit time. In larger fluid transmission and distribution stations (stations), due to the manufacturing Due to the limitation of specifications (size) and the difficulty of manpower operation, it is often not to design too large-diameter pipelines for fluid transmission and distribution, but to adopt a multi-pipeline (more than two) collective transmission and distribution method; when the flow rate changes greatly ( The difference between the maximum flow rate and the minimum flow rate is large), and the transmission and dis...
Claims
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Application Information
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