CN203718386U - Bypass control system for producing CO (carbon monoxide) - Google Patents
Bypass control system for producing CO (carbon monoxide) Download PDFInfo
- Publication number
- CN203718386U CN203718386U CN201420045078.0U CN201420045078U CN203718386U CN 203718386 U CN203718386 U CN 203718386U CN 201420045078 U CN201420045078 U CN 201420045078U CN 203718386 U CN203718386 U CN 203718386U
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- CN
- China
- Prior art keywords
- carbon monoxide
- control system
- pressure
- outlet pipe
- admission line
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- 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.)
- Withdrawn - After Issue
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Abstract
The utility model relates to a bypass control system for producing CO (carbon monoxide). The bypass control system comprises a pneumatic regulating valve, two PID (proportion integration differentiation) controllers and a high-value selector, wherein two ends of the pneumatic regulating valve are respectively connected with a gas inlet pipeline and a gas outlet pipeline; the two PID controllers are respectively arranged on the gas inlet pipeline and the gas outlet pipeline, and are used for monitoring pressures of CO compressors which are connected with the gas inlet pipeline and the gas outlet pipeline; the high-value selector is in signal connection with the PID controllers and the pneumatic regulating valve, and is used for controlling the pneumatic regulating valve according to the pressures monitored by the PID controllers. Compared with the prior art, the bypass control system has the advantages that the pressures at an inlet and an outlet can be ensured; the reaction speed is high, and the hysteresis is low; manpower can be saved, and fluctuation of the pressure of the outlet can be reduced.
Description
Technical field
The utility model relates to a kind of control system, especially relates to a kind of Bypass Control System for the production of CO.
Background technique
Existing CO is generally two-stage reciprocating compressor control system by Bypass Control System; This compressor is mainly used in after the gas compression of 99%CO, delivering to SLIC chemical plant, Craft in Chemical Industrial Area; To as air feed source of the gas, enter carbon monoxide compressor 2-1702CM01 and 2-1702CM02 boosts to 1.6MPaG after two sections of compressions from manufacturing process CO (carbon monoxide converter) gas (pressure 0.5MPaG).Stable in order to ensure outlet pressure, compressor designs a manually-operated gate pressure regulation, when outlet pressure PT02 is during higher than 1.6MPaG, and manual tune PV01 valve, part CO returns to suction port of compressor by compressor outlet.This design deficiency is: 1. the variation that can not follow pressure process changes.2. by hand valve regulation, there is certain hysteresis, cause outlet pressure fluctuation larger.3. waste of manpower resource.
Model utility content
The purpose of this utility model is exactly to provide a kind of pressure in entrance and outlet port, Bypass Control System for the production of CO of reduction pressure surge of guaranteeing in order to overcome the defect of above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions:
For the production of a Bypass Control System of CO, control the pressure of carbon monoxide compressor, comprise pneumatic control valve, PID controller and high value selector,
The two ends of described pneumatic control valve are connected with admission line and outlet pipe respectively,
Described PID controller is provided with two, is separately positioned on admission line and outlet pipe, and the pressure of the carbon monoxide compressor that monitoring is connected with admission line and outlet pipe,
Described high value selector signal connects PID controller and pneumatic control valve, the pressure control pneumatic modulating valve obtaining according to PID monitoring control devices.
Described carbon monoxide compressor is provided with two, is connected respectively with admission line and outlet pipe, between two carbon monoxide compressors, is provided with connecting tube.
The CO gas that admission line imports carries out by outlet pipe, being derived after two-part compression through two carbon monoxide compressors.
The inlet pressure of carbon monoxide compressor is lower than 0.5MPaG, and pneumatic control valve is controlled pressure regulation through being connected to the PID controller at admission line place.
The outlet pressure of carbon monoxide compressor is higher than 1.6MPaG, and pneumatic control valve is controlled pressure regulation through being connected to the PID controller at outlet pipe place.
Compared with prior art, the utility model can guarantee the pressure in entrance and outlet port, and is swift in response, and lags behind little, not only can save manpower, can also reduce the fluctuation of outlet pressure.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 is that carbon monoxide compressor, 2 is that admission line, 3 is that outlet pipe, 4 is that PID controller, 5 is that pneumatic control valve, 6 is high value selector.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
Embodiment
A kind of Bypass Control System for the production of CO, its structure as shown in Figure 1, control the pressure of carbon monoxide compressor 1, comprise pneumatic control valve 5, PID controller 4 and high value selector 6, carbon monoxide compressor 1 is provided with two, be connected with admission line 2 and outlet pipe 3 respectively, between two carbon monoxide compressors 1, be provided with connecting tube.The two ends of pneumatic control valve 5 are connected with admission line 2 and outlet pipe 3 respectively, PID controller 4 is provided with two, be separately positioned on admission line 2 and outlet pipe 3, the pressure of the carbon monoxide compressor 1 that monitoring is connected with admission line 2 and outlet pipe 3, high value selector 6 signals connect PID controller 4 and pneumatic control valve 5, the pressure control pneumatic modulating valve 5 that 1 monitoring obtains according to PID controller.
The utility model in use, under any circumstance, after compressor stops, opening the speed with 2% to 100% rapidly from current aperture by by-pass valve.After carbon monoxide compressor 1 starts, wait for stable process conditions, click after DCS picture LOAD Compressor button, by-pass valve closes to from 100% aperture the maximum value that inlet pressure is controlled (PT01) and outlet pressure control (PT02) with 1% speed.
The CO gas that admission line imports carries out by outlet pipe, being derived after two-part compression through two carbon monoxide compressors, during normal control, the inlet pressure of carbon monoxide compressor 1 is lower than 0.5MPaG, and pneumatic control valve 5 is controlled pressure regulation through being connected to the PID controller 4 at admission line 2 places.The outlet pressure of carbon monoxide compressor 1 is higher than 1.6MPaG, and pneumatic control valve 5 is controlled pressure regulation through being connected to the PID controller 4 at outlet pipe 3 places.
Claims (5)
1. for the production of a Bypass Control System of CO, control the pressure of carbon monoxide compressor, it is characterized in that, this system comprises pneumatic control valve, PID controller and high value selector,
The two ends of described pneumatic control valve are connected with admission line and outlet pipe respectively,
Described PID controller is provided with two, is separately positioned on admission line and outlet pipe, and the pressure of the carbon monoxide compressor that monitoring is connected with admission line and outlet pipe,
Described high value selector signal connects PID controller and pneumatic control valve, the pressure control pneumatic modulating valve obtaining according to PID monitoring control devices.
2. a kind of Bypass Control System for the production of CO according to claim 1, is characterized in that, described carbon monoxide compressor is provided with two, is connected respectively with admission line and outlet pipe, between two carbon monoxide compressors, is provided with connecting tube.
3. a kind of Bypass Control System for the production of CO according to claim 2, is characterized in that, the CO gas that admission line imports carries out by outlet pipe, being derived after two-part compression through two carbon monoxide compressors.
4. a kind of Bypass Control System for the production of CO according to claim 2, is characterized in that, the inlet pressure of carbon monoxide compressor is lower than 0.5MPaG, and pneumatic control valve is controlled pressure regulation through being connected to the PID controller at admission line place.
5. a kind of Bypass Control System for the production of CO according to claim 2, is characterized in that, the outlet pressure of carbon monoxide compressor is higher than 1.6MPaG, and pneumatic control valve is controlled pressure regulation through being connected to the PID controller at outlet pipe place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420045078.0U CN203718386U (en) | 2014-01-24 | 2014-01-24 | Bypass control system for producing CO (carbon monoxide) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420045078.0U CN203718386U (en) | 2014-01-24 | 2014-01-24 | Bypass control system for producing CO (carbon monoxide) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203718386U true CN203718386U (en) | 2014-07-16 |
Family
ID=51157535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420045078.0U Withdrawn - After Issue CN203718386U (en) | 2014-01-24 | 2014-01-24 | Bypass control system for producing CO (carbon monoxide) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203718386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806888A (en) * | 2014-01-24 | 2015-07-29 | 上海华林工业气体有限公司 | Bypass control system for producing CO |
-
2014
- 2014-01-24 CN CN201420045078.0U patent/CN203718386U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806888A (en) * | 2014-01-24 | 2015-07-29 | 上海华林工业气体有限公司 | Bypass control system for producing CO |
| CN104806888B (en) * | 2014-01-24 | 2017-07-04 | 上海华林工业气体有限公司 | One kind production CO Bypass Control Systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140716 Effective date of abandoning: 20170704 |
|
| AV01 | Patent right actively abandoned |