CN107402544B - High-reliability nitrogen generator drainage system - Google Patents
High-reliability nitrogen generator drainage system Download PDFInfo
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- CN107402544B CN107402544B CN201610338413.XA CN201610338413A CN107402544B CN 107402544 B CN107402544 B CN 107402544B CN 201610338413 A CN201610338413 A CN 201610338413A CN 107402544 B CN107402544 B CN 107402544B
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- Prior art keywords
- drainage
- pressure sensor
- electromagnetic valve
- nitrogen generator
- microcontroller
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/02—Preparation of nitrogen
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Emergency Alarm Devices (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
The invention relates to a high-reliability nitrogen generator drainage system, which comprises a drainage electromagnetic valve (1) and a PLC (programmable logic controller) (2), wherein the drainage electromagnetic valve (1) is arranged on a drainage pipeline of a nitrogen generator and is connected with the PLC (2), the drainage electromagnetic valve (1) and the PLC (2) form a timing drainage electromagnetic valve, the drainage system further comprises a microcontroller (3), an alarm (4), a first pressure sensor (51) and a second pressure sensor (52), a water outlet of the nitrogen generator, the first pressure sensor (51), the drainage electromagnetic valve (1) and the second pressure sensor (52) are sequentially connected, and the microcontroller (3) is respectively connected with the alarm (4), the first pressure sensor (51) and the second pressure sensor (52). Compared with the prior art, the invention has the advantage of high reliability by arranging the pressure detection, the water level monitoring, the alarm and the manual valve.
Description
Technical Field
The invention relates to an automatic drainage system used on a machine pipeline, in particular to a high-reliability nitrogen generator drainage system.
Background
At present, a common nitrogen generator drainage system adopts timing period automatic drainage program control, automatic drainage is carried out at the tail of each period, the program control is simple in programming mode, and is applied to the nitrogen generator, so that the operation is simple and convenient, and manual drainage is not needed.
But has drawbacks in terms of maintenance diagnostics of nitrogen generators. When the nitrogen generator is maintained, after the engineer machine is started, the time for waiting 25 to 30 minutes is needed to judge whether the drainage system of the nitrogen generator is normal or not, and the time is extremely wasted. When a failure occurs, a user is required to diagnose the cause of the failure of the drainage system by himself, but the user usually has no time to wait for more than 10 minutes, and the waiting process is easily distracted, resulting in missing the drainage opportunity.
When the nitrogen generator is started, the check and drainage are normal, operators may not be on the station, and after the nitrogen generator runs for a period of time, the pipeline of the electromagnetic valve may be blocked, so that the drainage function is affected, the operators may not notice at this time, and the drainage pipeline of the nitrogen generator generates accumulated water to affect the normal operation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a high-reliability nitrogen generator drainage system which can comprehensively detect the drainage function and realize hazard warning.
The aim of the invention can be achieved by the following technical scheme:
the high-reliability nitrogen generator drainage system comprises a drainage electromagnetic valve and a PLC controller, wherein the drainage electromagnetic valve is arranged on a drainage pipeline of the nitrogen generator and is connected with the PLC controller, the drainage electromagnetic valve and the PLC controller form a timing drainage electromagnetic valve, the high-reliability nitrogen generator drainage system is characterized by further comprising a microcontroller, an alarm, a first pressure sensor and a second pressure sensor, a water outlet of the nitrogen generator, the first pressure sensor, the drainage electromagnetic valve and the second pressure sensor are sequentially connected, the microcontroller is respectively connected with the alarm, the first pressure sensor and the second pressure sensor,
when the drainage system is started, the PLC controller controls the drainage electromagnetic valve to be opened for a period of time and simultaneously enters the working period of the drainage electromagnetic valve, the working period comprises a drainage period and a non-drainage period, the PLC controller controls the drainage electromagnetic valve to be opened in the drainage period, the microcontroller compares the pressure detection results of the first pressure sensor and the second pressure sensor, when the difference value between the detection values of the first pressure sensor and the second pressure sensor exceeds a set value, the microcontroller controls the alarm to give an alarm, and the PLC controller controls the drainage electromagnetic valve to be closed in the non-drainage period.
The drainage system also comprises a liquid level monitor arranged on the drainage pipeline of the nitrogen generator, wherein the position of the liquid level monitor is higher than that of the drainage electromagnetic valve and is connected with the microcontroller, when the liquid level monitor detects that the water level exceeds a set value, an alarm signal is sent to the microcontroller, and the microcontroller controls the alarm to give an alarm after receiving the signal.
The drainage system also comprises a manual valve arranged on the drainage pipeline of the nitrogen generator, and the position of the manual valve is lower than that of the liquid level monitor.
The liquid level monitor is connected with the microcontroller in a wired mode.
The microcontroller is respectively connected with the alarm, the first pressure sensor and the second pressure sensor in a wireless mode.
When the drainage system is started, the PLC controls the drainage electromagnetic valve to be opened for 2-10 s, the drainage period lasts for 2-10 s, and the non-drainage period lasts for 25-30 min.
Compared with the prior art, the invention has the following advantages:
(1) The water outlet of the nitrogen generator, the first pressure sensor, the water discharge electromagnetic valve and the second pressure sensor are sequentially connected, the microcontroller can compare the pressure detection results of the two pressure sensors at regular time according to the water discharge time period set by the PLC program, judge whether the electromagnetic valve has action faults according to the comparison results, and alarm faults through the alarm, so that the reliability of a water discharge system in the working process is further ensured; the opening and closing of the drainage electromagnetic valve is controlled by the PLC, so that the operation reliability is high.
(2) When the drainage system is started, the PLC controls the drainage electromagnetic valve to be opened for a period of time, and pre-drainage is realized, so that whether drainage is normal or not is judged, the drainage system is checked, and waiting time of operators is saved.
(3) The liquid level monitor is higher than the drainage solenoid valve and is connected with the microcontroller, and when the communication between the microcontroller and the pressure sensor fails and the solenoid valve fails, the liquid level monitor can monitor the water which is not discharged, so that a dangerous instruction is sent to the microcontroller.
(4) The manual valve is arranged below the liquid level monitor, so that manual drainage can be performed, and the normal work of the nitrogen generator is not affected.
(5) The liquid level monitor is connected with the microcontroller in a wired way, so that the connection reliability is ensured.
(6) The microcontroller is respectively connected with the alarm, the first pressure sensor and the second pressure sensor in a wireless mode, and system wiring is reduced.
Drawings
Fig. 1 is a schematic structural view of the present embodiment;
FIG. 2 is a ladder diagram of a PLC program according to the present embodiment;
reference numerals:
1 is a drainage electromagnetic valve; 2 is a PLC controller; 3 is a microcontroller; 4 is an alarm; 51 is a first pressure sensor; 52 is a second pressure sensor; 6 is a liquid level monitor; 7 a manual valve.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Examples
As shown in fig. 1, a high-reliability nitrogen generator drainage system comprises a drainage electromagnetic valve 1 and a PLC controller 2, wherein the drainage electromagnetic valve 1 is arranged on a drainage pipeline of the nitrogen generator and is connected with the PLC controller 2, the drainage electromagnetic valve 1 and the PLC controller 2 form a timing drainage electromagnetic valve, the drainage system further comprises a microcontroller 3, an alarm 4, a first pressure sensor 51 and a second pressure sensor 52, a drainage outlet of the nitrogen generator, the first pressure sensor 51, the drainage electromagnetic valve 1 and the second pressure sensor 52 are sequentially connected, and the microcontroller 3 is respectively connected with the alarm 4, the first pressure sensor 51 and the second pressure sensor 52.
When the drainage solenoid valve 1 works normally, the water pressure in each place of the drainage pipeline should be kept consistent, and when the difference between the water pressure values detected by the first pressure sensor 51 and the second pressure sensor 52 exceeds a set value, the drainage solenoid valve 1 can be judged to be invalid or the pipeline is blocked, and at the moment, the microcontroller 3 enables the alarm 4 to alarm in a first mode to remind an operator of the faults in the pipeline.
The drainage system also comprises a liquid level monitor 6 arranged on the drainage pipeline of the nitrogen generator, wherein the liquid level monitor 6 is higher than the drainage electromagnetic valve 1 and is connected with the microcontroller 3. Normally, there should not be too much water accumulation in the drain line. When the drainage solenoid valve can not normally drain water, and the microcontroller 3 and the two pressure sensors also can not detect pressure abnormality, the liquid level monitor 6 can make up, namely when the liquid level monitor 6 detects that the water level exceeds a set value, the water accumulated in the pipe reaches a dangerous value, the liquid level monitor 6 sends an alarm signal to the microcontroller 3, and the microcontroller 3 receives the signal and then controls the alarm 4 to alarm in a second mode to remind an operator to process. Because be equipped with manual valve 7 on nitrogen generator's the drain pipe, manual valve 7 position is less than liquid level monitor 6, when operating personnel notices the warning of second mode, then operable manual valve 7, with the ponding manual drainage in the drain pipe, does not influence nitrogen generator's normal operating, reduces the loss of shutting down.
In this embodiment, the liquid level monitor 6 is connected with the microcontroller 3 in a wired manner, and the microcontroller 3 is connected with the alarm 4, the first pressure sensor 51 and the second pressure sensor 52 in a wireless manner, and the wireless communication may be zigbee communication, wifi connection, and the like.
The microcontroller 3 can be a DSP chip, a singlechip and the like, the manual valve can be a butterfly valve or a ball valve, and the alarm 4 can be an audible and visual alarm.
Fig. 2 is a ladder diagram of the PLC program, in which X0 is an input switch, T0, T1, T2 represent delay relays, and Y0 is a drain solenoid valve coil.
When the input switch X0 is closed, the drainage solenoid valve Y0 is electrified to drain water, the delay relay T2 is electrified to time, and the delay relay T0 is electrified to time; after two seconds, the delay relay switch T2 is disconnected, and the drainage electromagnetic valve Y0 is powered off; thirty minutes later, the delay relay switch T0 is closed, the delay relay T1 is powered on for timing, and the drainage electromagnetic valve Y0 is powered on; after two seconds, the delay relay switch T1 is opened, so that the delay relay T0 power-off switch is opened, the drainage electromagnetic valve Y0 is powered off, the delay relay T1 power-off switch is closed, and the delay relay T0 is powered on for timing again, and the cycle is repeated.
The design increases a starting-up pre-drainage program, and pre-drains water in the power-off and power-on process so as to judge whether drainage is normal or not, thereby checking a drainage system. The normal operation of the nitrogen generator is not affected, and the repair and maintenance time is reduced.
Claims (5)
1. The high-reliability nitrogen generator drainage system comprises a drainage electromagnetic valve (1) and a PLC (programmable logic controller) (2), wherein the drainage electromagnetic valve (1) is arranged on a drainage pipeline of a nitrogen generator and is connected with the PLC (2), the drainage electromagnetic valve (1) and the PLC (2) form a timing drainage electromagnetic valve, the high-reliability nitrogen generator drainage system is characterized by further comprising a microcontroller (3), an alarm (4), a first pressure sensor (51) and a second pressure sensor (52), a water outlet of the nitrogen generator, the first pressure sensor (51), the drainage electromagnetic valve (1) and the second pressure sensor (52) are sequentially connected, the microcontroller (3) is respectively connected with the alarm (4), the first pressure sensor (51) and the second pressure sensor (52),
when the drainage system is started, the PLC (2) controls the drainage electromagnetic valve (1) to be opened for a period of time, and simultaneously enters a working period of the drainage electromagnetic valve (1), wherein the working period comprises a drainage period and a non-drainage period, the PLC (2) controls the drainage electromagnetic valve (1) to be opened in the drainage period, the microcontroller (3) compares pressure detection results of the first pressure sensor (51) and the second pressure sensor (52), when the difference value between the detection values exceeds a set value, the microcontroller (3) controls the alarm (4) to alarm, and the PLC (2) controls the drainage electromagnetic valve (1) to be closed in the non-drainage period;
the drainage system also comprises a liquid level monitor (6) arranged on the drainage pipeline of the nitrogen generator, wherein the position of the liquid level monitor (6) is higher than that of the drainage electromagnetic valve (1) and is connected with the microcontroller (3), when the liquid level monitor (6) detects that the water level exceeds a set value, an alarm signal is sent to the microcontroller (3), and the microcontroller (3) controls the alarm (4) to alarm after receiving the signal.
2. The high reliability nitrogen generator drainage system according to claim 1, further comprising a manual valve (7) disposed on the drain line of the nitrogen generator, said manual valve (7) being positioned below the liquid level monitor (6).
3. A high reliability nitrogen generator drainage system according to claim 1, characterized in that said level monitor (6) is wired to the microcontroller (3).
4. A high reliability nitrogen generator drainage system according to claim 1, characterized in that said microcontroller (3) is connected wirelessly to the alarm (4), the first pressure sensor (51) and the second pressure sensor (52), respectively.
5. The high-reliability nitrogen generator drainage system according to claim 1, wherein when the drainage system is started, the PLC (2) controls the drainage electromagnetic valve (1) to be opened for 2-10 s, the drainage period lasts for 2-10 s, and the non-drainage period lasts for 25-30 min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338413.XA CN107402544B (en) | 2016-05-19 | 2016-05-19 | High-reliability nitrogen generator drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610338413.XA CN107402544B (en) | 2016-05-19 | 2016-05-19 | High-reliability nitrogen generator drainage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107402544A CN107402544A (en) | 2017-11-28 |
| CN107402544B true CN107402544B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610338413.XA Active CN107402544B (en) | 2016-05-19 | 2016-05-19 | High-reliability nitrogen generator drainage system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203614130U (en) * | 2013-11-29 | 2014-05-28 | 山东华腾自动化科技有限公司 | Mine drainage system |
| CN104406043A (en) * | 2014-10-24 | 2015-03-11 | 安徽双鹤药业有限责任公司 | Compressed air system automatic drainage monitor |
| CN204302814U (en) * | 2014-11-11 | 2015-04-29 | 西安联控电气有限责任公司 | A kind of vacuum drainage monitoring system based on CAN |
| CN204344167U (en) * | 2014-11-25 | 2015-05-20 | 李家海 | A kind of drainage underground unmanned control system |
| CN204594622U (en) * | 2015-05-26 | 2015-08-26 | 金牛股份有限公司 | A kind of automatic water saving boiler body pressure detecting system |
| CN104938304A (en) * | 2015-05-25 | 2015-09-30 | 浙江大学 | Domestic sewage agricultural irrigation utilization and control system |
-
2016
- 2016-05-19 CN CN201610338413.XA patent/CN107402544B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203614130U (en) * | 2013-11-29 | 2014-05-28 | 山东华腾自动化科技有限公司 | Mine drainage system |
| CN104406043A (en) * | 2014-10-24 | 2015-03-11 | 安徽双鹤药业有限责任公司 | Compressed air system automatic drainage monitor |
| CN204302814U (en) * | 2014-11-11 | 2015-04-29 | 西安联控电气有限责任公司 | A kind of vacuum drainage monitoring system based on CAN |
| CN204344167U (en) * | 2014-11-25 | 2015-05-20 | 李家海 | A kind of drainage underground unmanned control system |
| CN104938304A (en) * | 2015-05-25 | 2015-09-30 | 浙江大学 | Domestic sewage agricultural irrigation utilization and control system |
| CN204594622U (en) * | 2015-05-26 | 2015-08-26 | 金牛股份有限公司 | A kind of automatic water saving boiler body pressure detecting system |
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| Publication number | Publication date |
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| CN107402544A (en) | 2017-11-28 |
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