CN111220204A - Prevent breathing heavily regulation control system mistake proofing detection device - Google Patents
Prevent breathing heavily regulation control system mistake proofing detection device Download PDFInfo
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- CN111220204A CN111220204A CN201811419674.XA CN201811419674A CN111220204A CN 111220204 A CN111220204 A CN 111220204A CN 201811419674 A CN201811419674 A CN 201811419674A CN 111220204 A CN111220204 A CN 111220204A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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Abstract
The invention relates to a mistake-proofing and error-proofing detection device of an anti-surge regulation control system, which comprises a DCS control system input/output interface, a valve position transmitter, a feedback signal cable, a first voltage comparator, a second voltage comparator, a valve positioner, a vibration detector, an air bleeding pipeline, an anti-surge valve body, a control electromagnetic valve, a voltage comparator, a power supply signal cable, a temperature detection element and a control signal cable, wherein the DCS control system input/output interface is arranged in a safety area electronic chamber, the anti-surge valve body is arranged on the air bleeding pipeline, the valve position transmitter is fixedly connected with a butterfly valve plate output rod contained in the anti-surge valve body, the valve positioner is arranged on the anti-surge valve body, and the control electromagnetic valve is arranged on the anti-surge valve body. According to the scheme, the temperature and vibration detection element is additionally arranged on the site, and the voltage abnormal motion detection circuit is additionally arranged, so that timely early warning is given to the failure degradation tendency before the control system is completely paralyzed, intervention is performed in advance, and the stable work of the control system is ensured.
Description
Technical Field
The invention relates to a detection device, in particular to a mistake-proofing and error-proofing detection device of an anti-surge regulation control system, and belongs to the technical field of electric instrument detection.
Background
The control and regulation system is an indispensable element in an industrial automation environment, realizes that a program set by DCS or PLC drives a field controlled object to act according to an instruction, and achieves the industrial purposes of controlling and regulating pressure, temperature, flow and the like. However, at present, the working conditions of control signal cables, power supply driving cables, joint terminals and control equipment contained in a control system are lack of corresponding monitoring and detecting means. The problem caused is that once a part or a link in the control system breaks down, the whole control system directly fails and is out of control, and the stability of industrial production is seriously threatened. Therefore, it is highly desirable to design a detection technique for detecting the degradation tendency of the control device with respect to the control signal cable included in the control system. And by monitoring and detecting the application of the technology, the mistake is prevented in time. Before the control system is completely out of control, a deterioration trend alarm is sent out, intervention and maintenance are carried out in advance, fault amplification is prevented, and comprehensive paralysis of the control system is avoided.
The development of the scheme is just aiming at the blank and the defects of the prior art, and is especially aiming at the problems that the temperature of a control cable contained in a control and regulation system is too high, and a line joint is loosened and aged; the effects of field vibrations on the control equipment; the influence of the on-site high-temperature environment on the control equipment and the cable; the technical scheme of combined detection and alarm of voltage comparison detection technology and alarm output, field vibration detection technology and alarm output and field control cable temperature detection technology and alarm output for judging whether the line voltage is normal or not is provided, so that the degradation trend and tendency of the whole control system before the complete fault can be subjected to error-preventing detection of advanced variables, alarm is given in time, maintainers are reminded to perform preventive maintenance, and production accidents caused by the complete breakdown of the control system are prevented.
Disclosure of Invention
The invention provides a mistake-proofing and error-proofing detection device of an anti-surge regulation control system aiming at the technical problems in the prior art.
In order to achieve the purpose, the technical scheme of the invention is as follows: the detection device comprises a DCS control system input/output interface, a valve position transmitter, a feedback signal cable, a first voltage comparator, a second voltage comparator, a valve positioner, a vibration detector, an air bleeding pipeline, an anti-surge valve body, a control electromagnetic valve, a voltage comparator, a power supply signal cable, a temperature detection element and a control signal cable, wherein the DCS control system input/output interface is arranged in a safety area electronic chamber;
the DCS comprises a DCS control system input/output interface, a valve position transmitter, a feedback signal cable, a control signal cable and a second voltage comparator, wherein the DCS control system input/output interface is connected with the valve position transmitter through the feedback signal cable; and a power supply signal cable is arranged between the input/output interface of the DCS control system and the control electromagnetic valve, and a voltage comparator is arranged on the power supply signal cable.
As a refinement of the invention, the detection device further comprises a first temperature detection element arranged at the end of the control signal cable.
As a refinement of the invention, the detection device further comprises a second temperature detection element which is arranged at the end of the feedback signal cable.
As a refinement of the invention, the detection device further comprises a temperature detection element, which is arranged at the end of the power signal cable.
As an improvement of the invention, the detection device further comprises a vibration detector, and the vibration detector is arranged at the valve position transmitter.
As an improvement of the invention, a vibration detector is additionally arranged at the position of the anti-surge valve body.
Compared with the prior art, the invention has the following advantages: 1) the scheme is designed aiming at the degradation trend of the control assembly contained in the control system, so that the defect of the prior art is overcome, and the blank of the control assembly fault detection technology is filled to a certain extent; 2) the scheme utilizes the micro-voltage abnormal motion detection function of the voltage comparison detector, and can predict the micro-fault of the control cable in advance; 3) according to the scheme, the temperature detection element is utilized, so that the conditions of cable faults, excessive current and temperature rise caused by loosening of the joint and the like can be predicted in advance through the rise change of the field temperature of the cable; 4) the scheme utilizes the vibration detection element, can predict the influence degree of the equipment under the vibration through the vibration condition and the actually measured data of the field equipment, and achieves the purpose of intervention in advance; 5) according to the scheme, through combined application of voltage detection, temperature detection and vibration detection technologies, on-line fault condition detection and prediction can be carried out on cables and equipment components contained in a control system, and scientific judgment basis can be made for timely finding problems by maintainers and intervening equipment faults in advance.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a control system;
FIG. 2 is a schematic diagram of a voltage, temperature, vibration detection circuit;
FIG. 3 is a schematic view of a DCS detection alarm;
in the figure: 1. DCS control system input and output interface, 2, a feedback signal cable, 3, a first voltage comparator, 4, a second voltage comparator, 5, a first temperature detection element, 6, a second temperature detection element, 7, a valve positioner, 8, a vibration detector, 9, a valve position transmitter, 10, a vibration detector, 11, a vent pipeline, 12, an anti-surge valve body, 13, a temperature detection element, 14, a control electromagnetic valve, 15, a voltage comparator, 16, a power supply signal cable, 17 and a control signal cable.
Detailed Description
For the purposes of promoting an understanding and appreciation of the invention, reference will now be made to the following detailed description of the invention taken in conjunction with the accompanying drawings.
Example 1: referring to fig. 1 and 2, the error prevention and detection device for the anti-surge regulation control system comprises a DCS control system input/output interface 1, a valve position transmitter 9, a feedback signal cable 2, a first voltage comparator 3, a second voltage comparator 4, a valve positioner 7, a vibration detector 8, a blow-off pipeline 11, an anti-surge valve body 12, a control electromagnetic valve 14, a voltage comparator 15, a power signal cable 16 and a control signal cable 17, wherein the DCS control system input/output interface 1 is arranged in a safe area electronic room, the anti-surge valve body 12 is mounted on the blow-off pipeline 11, the valve position transmitter 9 is fixedly connected with a butterfly valve plate output rod contained in the anti-surge valve body 12, the valve positioner 7 is mounted on the anti-surge valve body 12, and the control electromagnetic valve 14 is mounted on the anti-surge valve body 12; the DCS is characterized in that the input/output interface 1 of the DCS is connected with the valve position transmitter 9 through a feedback signal cable 2, wherein a first voltage comparator 3 is additionally arranged in the feedback signal cable 2, a control signal cable 17 is arranged between the input/output interface 1 of the DCS and the valve position locator 7, and a second voltage comparator 4 is additionally arranged on the control signal cable 17; a power supply signal cable 16 is arranged between the input and output interface 1 of the DCS control system and the control electromagnetic valve 14, and a voltage comparator 15 is arranged on the power supply signal cable 16.
The detection device further comprises a first temperature detection element 5, wherein the first temperature detection element 5 is arranged at the tail end of the control signal cable 17. The detection arrangement further comprises a second temperature detection element 6, which second temperature detection element 6 is arranged at the end of the feedback signal cable 2.
The detection device further comprises a temperature detection element 13, wherein the temperature detection element 13 is arranged at the tail end of the power supply signal cable 16; the detection device further comprises a vibration detector 10, the vibration detector 10 is arranged at the position of the valve position transmitter 9, and a vibration detector 8 is additionally arranged at the position of the anti-surge valve body 12.
Fig. 2 is a schematic diagram of a voltage, temperature and vibration detection circuit, wherein an IC1 voltage comparator collects a feedback cable voltage signal VA1, compares the feedback cable voltage signal VA1 with a set reference voltage VB1 in the comparator, and performs operation, amplification and output to DCS.
The IC2 voltage comparator collects the control cable voltage signal VA2, compares it with the set reference voltage VB2 in the comparator, calculates it, amplifies it and outputs it to DCS.
The IC3 voltage comparator collects the feedback cable voltage signal VA3, compares it with the set reference voltage VB3 in the comparator, calculates it, amplifies it and outputs it to DCS.
The vibration detectors YT1 and YT2 are respectively provided with a valve position feedback transmitter, and vibration signals at the valve body of the anti-surge valve are converted and output to the DCS control system through a preamplifier.
The temperature detectors TE1, TE2 and TE3 respectively collect the temperature at the field tail end of the feedback signal cable, the field tail end of the control signal cable and the field tail end of the power supply signal cable, and the temperature is converted by the temperature transmitter and output to the DCS control system.
FIG. 3 is a diagram of a DCS detection alarm; for the three groups of line voltage comparison output signals, field equipment vibration signals and field cable tail end temperature signals in the figure 2, the three groups of line voltage comparison output signals, the field equipment vibration signals and the field cable tail end temperature signals respectively enter a DCS control system to be analyzed, and once data are detected to be abnormal, an alarm signal is sent out immediately to inform operating personnel and maintenance personnel to check the equipment abnormality and fault conditions in time so as to perform error-proofing and error-proofing intervention before complete failure or paralysis of the control system.
The working process is as follows:
referring to fig. 1 and 2, in the scheme, a voltage comparator additionally installed on each signal cable compares the measured voltage of the line with a reference voltage and outputs the compared voltage, and once deviation is abnormal, a deviation abnormal signal is sent to a DCS control system to be displayed, pre-corrected and alarmed. The temperature detection elements additionally arranged on the signal cables convert the measured temperature of the cables into 4-20mA standard signals through the temperature transmitter, and the 4-20mA standard signals are transmitted to the DCS control system to be displayed, pre-corrected and alarmed.
Meanwhile, a vibration detector is additionally arranged on a feedback transmitter at the position of the on-site anti-surge valve respectively; a vibration detector is additionally arranged at the installation positions of a valve positioner and a control electromagnetic valve which are arranged on a surge-proof valve body; the vibration detection signal is converted into a 4-20mA standard signal through a preamplifier and is sent to a DCS control system for displaying, pre-error and alarming.
The anti-surge control and regulation system is under the normal working condition: the normal voltage of the control command signal cable is 24VDC, the normal voltage of the feedback signal cable is 24VDC, and the normal voltage of the control solenoid valve power supply cable is 24 VDC. Theoretically, the load element impedance is constant and the line voltage is relatively constant, and once the signal cable has a slight fault such as: slight broken skin, short-term ground connection, cable joint are not hard up, the slight fault damage of load equipment etc. then actual measurement voltage must change. At the moment, the voltage comparator acts, the reference voltage and the actually measured voltage are compared in the voltage comparator, and after operation and amplification, the switching value signal is directly output and sent to the DCS control system to give an alarm. And reminding a maintainer to check the relevant load equipment and the line connector in time.
The anti-surge control and regulation system is under the normal working condition: the temperature of cables, joints and load equipment, particularly cables, is relatively constant, and the temperature inside a factory building is generally 5-20 ℃ in autumn and winter; the temperature is generally 25-40 ℃ in spring and summer. And referring to the reference temperature, when the actually measured cable temperature of the temperature detection element exceeds a set value, an alarm is immediately sent out, and the alarm is pre-mistaken. And reminding a maintainer to check the relevant equipment or the cable.
The anti-surge control and regulation system is under the normal working condition: the vibration detection instrument is characterized in that the vibration environment of control equipment contained in the anti-surge valve is relatively constant and is generally 10um/s, once vibration of field air discharging operation becomes large, the vibration detection instrument directly influences a position feedback transmitter of the anti-surge valve, a valve positioner, a control electromagnetic valve and other load components, at the moment, the vibration detection instrument sends a vibration detection signal to a DCS control system through a preamplifier to display, the pre-error is carried out, the alarm is given, once a vibration measurement value is out of limit, a maintainer is reminded to check that relevant equipment is influenced by vibration, and the running condition of the equipment is evaluated.
It should be noted that the above-mentioned embodiments do not limit the scope of the present invention, and equivalents and substitutions made on the basis of the above-mentioned embodiments are included in the scope of the present invention.
Claims (6)
1. The detection device comprises a DCS control system input/output interface, a valve position transmitter, a feedback signal cable, a first voltage comparator, a second voltage comparator, a valve positioner, a vibration detector, an air bleeding pipeline, an anti-surge valve body, a control electromagnetic valve, a voltage comparator, a power supply signal cable, a temperature detection element and a control signal cable, wherein the DCS control system input/output interface is arranged in a safety area electronic chamber;
the DCS comprises a DCS control system input/output interface, a valve position transmitter, a feedback signal cable, a first voltage comparator, a control signal cable and a second voltage comparator, wherein the DCS control system input/output interface is connected with the valve position transmitter through the feedback signal cable; and a power supply signal cable is arranged between the input/output interface of the DCS control system and the control electromagnetic valve, and a voltage comparator is arranged on the power supply signal cable.
2. The surge-proof adjustment control system error-proofing detection device according to claim 1, wherein the detection device further comprises a first temperature detection element disposed at an end of the control signal cable.
3. The surge-proof regulation control system error-proofing detection device according to claim 2, wherein the detection device further comprises a second temperature detection element disposed at the end of the feedback signal cable.
4. The surge-proof regulation control system error-proofing detection device according to claim 2 or 3, wherein the detection device further comprises a temperature detection element disposed at an end of a power signal cable.
5. The surge-proof regulation control system error-proofing detection apparatus according to claim 4, wherein the detection apparatus further comprises a vibration detector provided at the valve position transmitter.
6. The surge-proof regulating and controlling system error-proofing detecting device as claimed in claim 5, wherein a vibration detector is additionally installed at the valve body of the surge-proof valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811419674.XA CN111220204A (en) | 2018-11-26 | 2018-11-26 | Prevent breathing heavily regulation control system mistake proofing detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811419674.XA CN111220204A (en) | 2018-11-26 | 2018-11-26 | Prevent breathing heavily regulation control system mistake proofing detection device |
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| Publication Number | Publication Date |
|---|---|
| CN111220204A true CN111220204A (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811419674.XA Pending CN111220204A (en) | 2018-11-26 | 2018-11-26 | Prevent breathing heavily regulation control system mistake proofing detection device |
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| CN (1) | CN111220204A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357181A (en) * | 2021-05-08 | 2021-09-07 | 上海梅山钢铁股份有限公司 | Fault self-switching redundancy control device for electric air door of fan |
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| CN102562679A (en) * | 2011-12-31 | 2012-07-11 | 杭州哲达科技股份有限公司 | Intelligent anti-surging regulating valve and method for realizing control of intelligent anti-surging regulating valve |
| CN202348624U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Single-action pneumatic anti-surge adjusting valve |
| CN103499958A (en) * | 2013-09-30 | 2014-01-08 | 中国神华能源股份有限公司 | Method and device for controlling MFT (Main Fuel Trip) |
| CN204647511U (en) * | 2015-05-28 | 2015-09-16 | 河北津顺节能技术开发有限公司 | Anti-surge control device |
| CN205298618U (en) * | 2016-01-04 | 2016-06-08 | 吴江市鼎天铸造有限公司 | Valve with vibration detection device |
| CN107939984A (en) * | 2017-10-29 | 2018-04-20 | 叶良俊 | A kind of Pneumatic butterfly valve of achievable high-speed switch |
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2018
- 2018-11-26 CN CN201811419674.XA patent/CN111220204A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202348624U (en) * | 2011-11-18 | 2012-07-25 | 杭州哲达科技股份有限公司 | Single-action pneumatic anti-surge adjusting valve |
| CN102562679A (en) * | 2011-12-31 | 2012-07-11 | 杭州哲达科技股份有限公司 | Intelligent anti-surging regulating valve and method for realizing control of intelligent anti-surging regulating valve |
| CN103499958A (en) * | 2013-09-30 | 2014-01-08 | 中国神华能源股份有限公司 | Method and device for controlling MFT (Main Fuel Trip) |
| CN204647511U (en) * | 2015-05-28 | 2015-09-16 | 河北津顺节能技术开发有限公司 | Anti-surge control device |
| CN205298618U (en) * | 2016-01-04 | 2016-06-08 | 吴江市鼎天铸造有限公司 | Valve with vibration detection device |
| CN107939984A (en) * | 2017-10-29 | 2018-04-20 | 叶良俊 | A kind of Pneumatic butterfly valve of achievable high-speed switch |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357181A (en) * | 2021-05-08 | 2021-09-07 | 上海梅山钢铁股份有限公司 | Fault self-switching redundancy control device for electric air door of fan |
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Application publication date: 20200602 |
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