CN2753936Y - Valve position monitoring and alarming linkage device - Google Patents
Valve position monitoring and alarming linkage device Download PDFInfo
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- CN2753936Y CN2753936Y CN 200420050348 CN200420050348U CN2753936Y CN 2753936 Y CN2753936 Y CN 2753936Y CN 200420050348 CN200420050348 CN 200420050348 CN 200420050348 U CN200420050348 U CN 200420050348U CN 2753936 Y CN2753936 Y CN 2753936Y
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Abstract
The utility model provides a valve position monitoring and alarming linkage device for the monitoring operation, the alarming operation and the linkage control of a hydraulic valve position automatically controlled by programs of an intermittent type gas producer in industries, such as chemical industry, smelting, etc. The utility model is mainly composed of an alarm circuit of the hydraulic valve, which does not reach an upper position, an alarm circuit of the hydraulic valve, which does not reach a lower position, a fault alarm circuit of an output relay of a programmer controlled device, which can not be broken, a fault alarm circuit of the output relay of the programmer controlled device, which can not be closed, a fault alarm circuit of an upper-position sensor, which is closed all the time, a fault alarm circuit of a lower-position sensor, which is closed all the time and a failure halt linkage circuit. The utility model overcomes the frauds that a self failure of a control system of the existing alarm device can not be alarmed, safe linkage and shutdown can not be realized, etc. The utility model can be safely operated.
Description
Affiliated technical field:
The utility model relates to a kind of valve position detection and warning interlock of automatic program control hydraulic valve of fixed intermittent layer gasification formula gas producer.
Background technique:
All adopt intermittent gasification formula gas producer to produce coal gas in industries such as chemical industry, smelting, the used program control hydraulic valve of this gas producer is a lot, moves very frequently, and wherein the action of each valve all plays an important role to normal gas making.Particularly the action of crucial hydrovalve is malfunctioning, more can cause beyond thought pernicious consequence, even the accident of blasting.This just requires hydrovalve must accurately move according to the control command of programming controller aborning.Yet exist all too many levels such as transmission signal line, electro hydraulic valve, oil pipe, oil cylinder between from the programming controller to the hydrovalve, hydrovalve is in operation and breaks down is inevitable.This just needs the necessary running check of production technology operator.But because of all kinds of valve quantity are many, fault can not in time be found generally speaking, only after severe exacerbation appears in the working of a furnace, just can judge, and could check and handle failsafe valve, often at this moment production has been caused serious stopping production influence.Therefore in advance the hydrovalve situation is detected, in time the abnormal conditions that hydrovalve is occurred are carried out reliable early warning and control, are vital in factory to continuous safety in production.The phenomenon that existing warning device false alarm often occurs and fails to report, the main cause of reporting and fail to report the situation generation by mistake is: 1, programming controller is not provided with observation circuit in the alarm system, programming controller breaks down and does not report to the police; 2, the sensor of alarm system does not have the self diagnosis Fail detecting apparatus, and sensor breaks down and do not report to the police; 3, sensed system poor reliability; When 4, abnormal conditions appear in valve, can not realize the safety interlocking blowing out.
Summary of the invention:
The utility model is at the problems referred to above, a kind of valve position monitoring and warning interlock are proposed, this device is to valve dystopy fault, programming controller fault, the timely detection alarm of alarm system sensor fault, and utilize parallel technology to strengthen the reliability of sensing system, utilize control circuit simultaneously, when abnormal signal appearred in important valve, the operation of terminator controller made system be in the interlocking safe condition.
As shown in Figure 1, technical solutions of the utility model are: at the existing problem of present valve position detection device, adopt hardware circuit to implement to report to the police and control, in warning circuit except comprise hydrovalve less than upper warning circuit (3) and hydrovalve less than the next warning circuit (5), also increased the program controller output relay failure alarm circuit (1) that breaks not open, the not closed failure alarm circuit of program controller output relay (2), the closed all the time failure alarm circuit of upper level sensor (4), closed all the time failure alarm circuit of following level sensor (6) and interlock circuit (20), wherein the program controller output relay failure alarm circuit (1) that breaks not open is connected and composed by delay circuit (02) and turnover door (03), the not closed failure alarm circuit of program controller output relay (2) is connected and composed by delay circuit (04) and turnover door (05), delay circuit (02) is connected with conversion circuit (01) respectively with delay circuit (04), conversion circuit (01) is connected to the program controller output relay, and the output of turnover door (03) and turnover door (05) is connected alarm indication and connects logical device (020).Conversion circuit (01) is obtained output voltage signal from the program controller output relay, after conversion, judge relay closing time or break by delay circuit (02), delay circuit (04) respectively again, when these two any one times above its corresponding delay circuit (02) or delay circuit (04) setting of time, circuit promotes corresponding turnover door (03) or turnover door (05) is implemented warning; The closed all the time failure alarm circuit of upper level sensor (4) is connected and composed successively by upper level sensor (06), delay circuit (07) and turnover door (08), and the closed all the time failure alarm circuit of following level sensor (6) is by level sensor (09), delay circuit (010) and turnover door (011) connect and compose successively down.Closed all the time failure alarm circuit of upper level sensor (4) and the closed all the time failure alarm circuit of following level sensor (6) are respectively to obtain signal from upper level sensor (06) and following level sensor (09) output terminal, delay circuit (07) or delay circuit (010) by correspondence are judged sensor closing time, surpass set time when one of these two times, circuit promotes corresponding turnover door (08) or turnover door (011) is implemented to report to the police; Hydrovalve is connected and composed by delay circuit (012) and turnover door (013) less than upper warning circuit (3), and wherein (012) two input end of delay circuit connects the output terminal of conversion circuit (01) and the output terminal of upper level sensor (06) respectively.Hydrovalve is connected and composed by delay circuit (014) and turnover door (015) less than the next warning circuit (5), and wherein (014) two input end of delay circuit connects the output terminal of conversion circuit (01) and the output terminal of following level sensor (09) respectively.Hydrovalve is obtained output voltage signal less than the next warning circuit (5) from the program controller output relay less than upper warning circuit (3) and hydrovalve, obtain input signal through conversion circuit (01), also obtain the closure signal of upper level sensor (06) and following level sensor (09) simultaneously respectively, judge the signal that the output relay of program controller sends by delay circuit (012) or delay circuit (014) respectively, to upper level sensor, the delay time separately of following level sensor respective closed, when these two retard times, any one surpassed corresponding delay circuit (012) or delay circuit (014) set time (the respective valves bradypragia be described or be failure to actuate), related circuit promotes turnover door (013) or turnover door (015) is implemented warning; Interlock circuit (20) is made of the logical device (020) of input end more than, choose the input end that any several warning output terminal (those are to the vital warning of production safety) connects logical device (020) by above-mentioned six warning circuits, logical device (020) output terminal connects program controller turn-off reset end; When any one the warning output terminal generation alarm signal that connects, logical device (020) will produce SC sigmal control program controller turn-off reset; Upper level sensor (06) and following level sensor (09) all adopt a plurality of sensor parallel connections.
Positive role of the present utility model is: 1, the output relay to programming controller is provided with observation circuit, and programming controller produces fault and can in time report to the police; When 2, abnormal conditions occurring, reset, stopped the serious accident generation by the interlock circuit autostop.
Description of drawings:
Fig. 1 is the schematic diagram of the present utility model content.
Fig. 2 is embodiment of the utility model.
Fig. 3 is the circuit theory diagrams of Fig. 2 reverse circuit (30).
Fig. 4 is the conversion circuit figure of program controller output relay output 220VAC.
Fig. 5 is the conversion circuit figure of program controller output relay output 24VDC.
Among the figure 1, the program controller output relay failure alarm circuit that breaks not open, 2, the not closed failure alarm circuit of program controller output relay, 3, hydrovalve is less than upper warning circuit, 5, hydrovalve is less than the next warning circuit, 4, the closed all the time failure alarm circuit of upper level sensor, 6, the closed all the time failure alarm circuit of following level sensor, 01, conversion circuit, 06, upper level sensor, 09, following level sensor, 02,04,07,010,012,014, delay circuit, 03,05,08,011,013,015, turnover door, 20, interlock circuit, 020, logical device, 30, reverse circuit, 11, signal input part, 13, the control end of analog switch, 17, the output terminal of comparator, 101, analog switch, 102, phase inverter, 700, the control command port, 301, analog switch, 401, analog switch, 303, rest-set flip-flop, 402, phase inverter, 501, analog switch, 502, phase inverter, 503, rest-set flip-flop, 602, phase inverter, 91, the dry reed-pipe sensor, 92, the dry reed-pipe sensor, 601, analog switch, 7,8, the control command display circuit, 9, the up stroke display circuit that puts in place, 10, the down stroke display circuit that puts in place, 70,80, rp-drive, 90,100, rp-drive, 20, interlock circuit, 200, multichannel input and door or AND NOT gate, 12, resistance, 14, capacitor, 18, comparator, 15, negative input end, 19, analog switch.
Embodiment:
Fig. 2 is a specific embodiment of the present utility model.
In the present embodiment, upper level sensor (06) adopts dry reed-pipe sensor (91), following level sensor (09) adopts dry reed-pipe sensor (92), logical device (020) in the interlock circuit (20) adopts multichannel input and door or AND NOT gate (200), in six warning circuits delay circuit and turnover door are arranged all, its public part is represented with a unified reverse circuit (30).
Valve position monitoring, alarming interlock in the present embodiment is made of six warning circuits and interlock circuit and four working state display circuits.Six warning circuits are respectively: the program controller output relay failure alarm circuit (1) that breaks not open, the not closed failure alarm circuit of program controller output relay (2), hydrovalve is less than upper warning circuit (3), hydrovalve is less than the next warning circuit (5), the closed all the time failure alarm circuit of upper level sensor (4), the closed all the time failure alarm circuit of following level sensor (6).In above-mentioned six warning circuits separately the core be a reverse circuit (30) that constitutes by integration circuit (delay circuit) and comparison circuit (Counter rotating door), as shown in Figure 3, its structure is as follows: signal input part (11) connects an end of resistance (12), the other end of resistance (12) connects the negative input end (15) of capacitor (14) and comparator (18), capacitor (14) the other end connects power supply ground end, capacitor two ends and an analog switch (19) two ends parallel connection, the control end (13) of analog switch (19) be connected in division in each circuit, the positive input terminal of comparator (18) connects reference voltage, and the output terminal (17) of comparator (18) is by certain circuit drives warning device; Be connected in positive power source terminal for break not open reverse circuit (30) signal input part (11) of failure alarm circuit (1) of program controller output relay by analog switch (101), the input end and the control command port (700) of the control end of analog switch (101) and not gate (102) are connected, and not gate (102) output terminal connects the control end (13) of the analog switch (19) in the reverse circuit (30); Signal input part (11) in the reverse circuit (30) of the not closed failure alarm circuit of program controller output relay (2) connects power positive end, and the control end (13) of analog switch (19) connects control command port (700) in the reverse circuit (30); Hydraulic valve connects analog switch (301) less than the input end (11) in the reverse circuit (30) of upper warning circuit (3), analog switch (301) the other end connects power positive end, the control end of analog switch (301) connects control command port (700), the control end (13) of the analog switch (19) in the reverse circuit (30) connects the output terminal of analog switch (401), the output terminal (17) of comparator (18) is connected with one of them input end of rest-set flip-flop (303) in the reverse circuit (30), another input end of rest-set flip-flop (303) is connected with phase inverter (402) output terminal, and one of them output terminal of rest-set flip-flop (303) drives certain warning device; Hydrovalve is less than in the next warning circuit (5), the input end (11) of reverse circuit (30) connects analog switch (501), the other end of analog switch (501) is connected to power positive end, control command port (700) connects the input end of phase inverter (502), phase inverter (502) output terminal connects the control end of analog switch (501), the control end (13) of the analog switch (19) in the reverse circuit (30) connects the output terminal of analog switch (601), the output terminal (17) of comparator (18) is connected with one of them input end of rest-set flip-flop (503) in the reverse circuit (30), another input end of rest-set flip-flop (503) is connected with phase inverter (602) output terminal, and one of them output terminal of rest-set flip-flop drives certain warning device; The upper level sensor signal input part (11) in the reverse circuit (30) of closed alarm circuit exists (4) all the time connects analog switch (401) one ends, analog switch (401) the other end connects power positive end, the control end of analog switch (401) connects the output terminal of dry reed-pipe sensor (91) and the input end of phase inverter (402), and the output terminal of phase inverter (402) connects the control end (13) of analog switch (19) in the reverse circuit (30).The following level sensor signal input part (11) in the reverse circuit (30) of closed alarm circuit exists (6) all the time connects analog switch (601) one ends, analog switch (601) the other end connects power positive end, the control end of analog switch (601) connects the output terminal of dry reed-pipe sensor (92), the input end of analog switch (601) connects the input end of phase inverter (602), and the output terminal of phase inverter (602) connects the control end (13) of analog switch (19) in the reverse circuit (30).Four working state display circuits are divided into control command display circuit (7), control command display circuit (8) and up stroke display circuit (9), the down stroke display circuit (10) that puts in place that puts in place, and wherein control command display circuit (7) connects certain display device by a rp-drive (70) and constitutes; Control command display circuit (8) connects certain display device by rp-drive (80) and constitutes, the input end of rp-drive (70) connects control command port (700), the input end of rp-drive (80) connects the output terminal of phase inverter (502), up stroke puts display circuit (9) in place by the certain display device formation of a rp-drive (90) connection, down stroke puts display circuit (10) in place by the certain display device formation of a rp-drive (100) connection, rp-drive (90) input end connects the output terminal of dry reed-pipe sensor (91), rp-drive (100) input end connects the output terminal of dry reed-pipe sensor (92), dry reed-pipe sensor (91), the input end of dry reed-pipe sensor (92) connects power positive end.Interlock circuit (20) is made of a multichannel input and door or AND NOT gate (200), by choosing the input end that any several warning output terminal (those are to the vital warning of production safety) connects multichannel input and door or AND NOT gate (200) in above-mentioned six warning circuits, the multichannel input is connected program controller turn-off reset end with the output terminal of door or AND NOT gate (200), when any one the warning output terminal that connects produces alarm signal, produce SC sigmal control program controller turn-off reset with door or AND NOT gate (200); For reliability dry reed-pipe sensor (91), the dry reed-pipe sensing (92) of strengthening sensor adopts a plurality of sensor parallel waies respectively, after adopting this mode, even certain faulty sensor wherein, can not produce the false alarm action yet, though this method has increased the probability that fault is not left in sensor long-term disjunction, can make differentiation to this situation but short circuit sensor is reported to the police, in time handle the back and do not lose the warning phenomenon with regard to not producing.The relay output of programming controller is through certain conversion and photoelectricity is isolated ability and foregoing circuit connects.Fig. 4, Fig. 5 provide the conversion circuit of 220VAC output and the conversion circuit of 24VDC output, and (700) represent the control command port among the figure.
The utility model can be used for all valve position detection and reliable warnings not in place of utilizing programme controlled periodicity action valve, the sensor that designs in the device is strong to the extreme difference environmental suitability, is particularly suitable for moving in having environment such as water vapour, high temperature, greasy dirt, dust is big.Use this device in the intermittence system gas of industries such as chemical industry, smelting, continuous safety in production to be played an important role.
Claims (2)
1, a kind of hydrovalve that comprises is monitored and the warning interlock less than the next warning circuit valve position less than upper warning circuit and hydrovalve, it is characterized in that: it also comprises the program controller output relay failure alarm circuit (1) that breaks not open, the not closed failure alarm circuit of program controller output relay (2), the closed all the time failure alarm circuit of upper level sensor (4), closed all the time failure alarm circuit of following level sensor (6) and interlock circuit (20), wherein the program controller output relay failure alarm circuit (1) that breaks not open is connected and composed by delay circuit (02) and turnover door (03), the not closed failure alarm circuit of program controller output relay (2) is connected and composed by delay circuit (04) and turnover door (05), delay circuit (02) is connected with conversion circuit (01) respectively with delay circuit (04), conversion circuit (01) is connected to the program controller output relay, and output is connected alarm indication and connects logical device (020) turnover door (03) with turnover door (05); The closed all the time failure alarm circuit of upper level sensor (4) is connected and composed successively by upper level sensor (06), delay circuit (07) and turnover door (08), and the closed all the time failure alarm circuit of following level sensor (6) is by level sensor (09), delay circuit (010) and turnover door (011) connect and compose successively down; Hydrovalve is connected and composed by delay circuit (012) and turnover door (013) less than upper warning circuit (3), and wherein (012) two input end of delay circuit connects the output terminal of conversion circuit (01) and the output terminal of upper level sensor (06) respectively.Hydrovalve is connected and composed by delay circuit (014) and turnover door (015) less than the next warning circuit (5), and wherein (014) two input end of delay circuit connects the output terminal of conversion circuit (01) and the output terminal of following level sensor (09) respectively; Interlock circuit (20) is made of the logical device (020) of input end more than, chooses the input end that any several warning output terminal connects logical device (020) by above-mentioned six warning circuits, and logical device (020) output terminal connects program controller turn-off reset end; Upper level sensor (06) and following level sensor (09) all adopt a plurality of sensor parallel connections.
2, according to right 1 described valve position monitoring and warning interlock, it is characterized in that: at the program controller output relay failure alarm circuit (1) that breaks not open, the not closed failure alarm circuit of program controller output relay (2), hydrovalve is less than upper warning circuit (3), hydrovalve is less than the next warning circuit (5), each self-contained reverse circuit that constitutes by integration circuit and comparison circuit (30) in (6) six circuit of the closed all the time failure alarm circuit of closed all the time failure alarm circuit of upper level sensor (4) and following level sensor, its structure is as follows: signal input part (11) connects an end of resistance (12), the other end of resistance (12) connects the negative input end (15) of capacitor (14) and comparator (18), capacitor (14) the other end connects power supply ground end, capacitor two ends and an analog switch (19) two ends parallel connection, the control end (13) of analog switch (19) be connected in division in each circuit, the positive input terminal of comparator (18) connects reference voltage, and the output terminal (17) of comparator (18) is by certain circuit drives warning device; Be connected in positive power source terminal for break not open reverse circuit (30) signal input part (11) of failure alarm circuit (1) of program controller output relay by analog switch (101), the input end and the control command port (700) of the control end of analog switch (101) and not gate (102) are connected, and not gate (102) output terminal connects the control end (13) of the analog switch (19) in the reverse circuit (30); Signal input part (11) in the reverse circuit (30) of the not closed failure alarm circuit of program controller output relay (2) connects power positive end, and the control end (13) of analog switch (19) connects control command port (700) in the reverse circuit (30); Hydraulic valve connects analog switch (301) less than the input end (11) in the reverse circuit (30) of upper warning circuit (3), the analog switch the other end connects power positive end, the control end of analog switch (301) connects control command port (700), the control end (13) of the analog switch (19) in the reverse circuit (30) connects the output terminal of analog switch (401), the output terminal (17) of comparator (18) is connected with one of them input end of rest-set flip-flop (303) in the reverse circuit (30), another input end of rest-set flip-flop (303) is connected with phase inverter (402) output terminal, and one of them output terminal of rest-set flip-flop drives certain warning device; Hydrovalve is less than in the next warning circuit (5), the input end (11) of reverse circuit (30) connects analog switch (501), the other end of analog switch (501) is connected to power positive end, control command port (700) connects the input end of phase inverter (502), phase inverter (502) output terminal connects the control end of analog switch (501), the control end (13) of the analog switch (19) in the reverse circuit (30) connects the output terminal of analog switch (601), the output terminal (17) of comparator (18) is connected with one of them input end of rest-set flip-flop (503) in the reverse circuit (30), another input end of rest-set flip-flop (503) is connected with phase inverter (602) output terminal, and one of them output terminal of rest-set flip-flop drives certain warning device; The upper level sensor signal input part (11) in the reverse circuit (30) of closed alarm circuit exists (4) all the time connects analog switch (401) one ends, analog switch (401) the other end connects power positive end, the control end of analog switch (401) connects the output terminal of dry reed-pipe sensor (91) and the input end of phase inverter (402), and the output terminal of phase inverter (402) connects the control end (13) of analog switch (19) in the reverse circuit (30); The following level sensor signal input part (11) in the reverse circuit (30) of closed alarm circuit exists (6) all the time connects analog switch (601) one ends, analog switch (601) the other end connects power positive end, the control end of analog switch (601) connects the output terminal of dry reed-pipe sensor (92), the input end of analog switch (601) connects the input end of phase inverter (602), and the output terminal of phase inverter (602) connects the control end (13) of analog switch (19) in the reverse circuit (30); Interlock circuit (20) is made of a multichannel input and door or AND NOT gate (200), by choosing the input end that any several warning output terminal connects multichannel input and door or AND NOT gate (200) in above-mentioned six warning circuits, the multichannel input is connected program controller turn-off reset end with the output terminal of door or AND NOT gate (200); Dry reed-pipe sensor (91), dry reed-pipe sensor (92) adopt a plurality of sensor parallel waies respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420050348 CN2753936Y (en) | 2004-04-29 | 2004-04-29 | Valve position monitoring and alarming linkage device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420050348 CN2753936Y (en) | 2004-04-29 | 2004-04-29 | Valve position monitoring and alarming linkage device |
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| Publication Number | Publication Date |
|---|---|
| CN2753936Y true CN2753936Y (en) | 2006-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420050348 Expired - Fee Related CN2753936Y (en) | 2004-04-29 | 2004-04-29 | Valve position monitoring and alarming linkage device |
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| CN (1) | CN2753936Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021382A (en) * | 2014-06-06 | 2015-11-04 | 中国海洋石油总公司 | Subsea X-mas tree hydraulic valve performance online monitoring and diagnostic system and method |
| WO2017114319A1 (en) * | 2015-12-30 | 2017-07-06 | 青岛歌尔声学科技有限公司 | Dual-sensor signal collection circuit |
| CN108154944A (en) * | 2016-12-06 | 2018-06-12 | 广东核电合营有限公司 | A kind of nuclear power plant's medicine system alarm control method, device and medicine system |
-
2004
- 2004-04-29 CN CN 200420050348 patent/CN2753936Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021382A (en) * | 2014-06-06 | 2015-11-04 | 中国海洋石油总公司 | Subsea X-mas tree hydraulic valve performance online monitoring and diagnostic system and method |
| WO2017114319A1 (en) * | 2015-12-30 | 2017-07-06 | 青岛歌尔声学科技有限公司 | Dual-sensor signal collection circuit |
| US10177777B2 (en) | 2015-12-30 | 2019-01-08 | Qingdao Goertek Technology Co., Ltd. | Dual-sensor signal collecting circuit |
| CN108154944A (en) * | 2016-12-06 | 2018-06-12 | 广东核电合营有限公司 | A kind of nuclear power plant's medicine system alarm control method, device and medicine system |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |