CN2101178U - Interlock device for boiler water shortage protecting - Google Patents
Interlock device for boiler water shortage protecting Download PDFInfo
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- CN2101178U CN2101178U CN 91215917 CN91215917U CN2101178U CN 2101178 U CN2101178 U CN 2101178U CN 91215917 CN91215917 CN 91215917 CN 91215917 U CN91215917 U CN 91215917U CN 2101178 U CN2101178 U CN 2101178U
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- boiler
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
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- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The utility model relates to a pre-alarm interlocking device for preventing water shortage for boilers, which is composed of a sensor 1, a controller 13 and a monitor 20. By using the technology of digital coding, the utility model can automatically judge self-failures of the sensor and the controller and conduct automatic control and simulated color block display of the liquid level of a boiler. The utility model has the function of distinguishing signs of water shortage of boilers. Once a sing of water shortage is detected, besides conducting the function of the protective emergency shutdown of the boiler, the controller 13 also has the function of conducting long-distance alarms to the monitor 20. The monitor can automatically display the boiler number of the boiler which is short of water and the time of happening the sign of water shortage, so as to conduct a secondary alarm. The monitor 20 also has the function of memory. The utility model with the advantages of good performance and convenient manipulation and management is one of the best control solution for ensuring the safe operation of boilers.
Description
The utility model is a volume in the physical field, and the boiler liquid level in flow or the level gauging scope is control and anti-lack of water prior-warning device automatically.
Because of boiler water shortage causes the accident is the most general in the boiler breakdowns, and dangerous also bigger a kind of accident is to this, having multiple boiler liquid level control technology that it is added at present overcomes, as ball float-inductance type, ball float-switching regulator, electric pole type, condenser type or the like, they have received certain effect; But, these technology all lack the ability that the fault that sensor itself is produced lost efficacy and judges, controller itself does not have the self checking function yet, in addition, prior art is to the utmost point low water level of boiler in service and this two states of lack of water omen occurs and also usually can not accurately offer an explanation, or alarm range is narrow when finding that boiler has lack of water operation omen, be unfavorable for accident in time, the correct processing.
The purpose of this utility model is to overcome the weak point of above boiler liquid level control technology, providing a kind of can show and automatic control boiler water level, can judge sensor, the fault of controller own, can accurately offer an explanation the lack of water omen of operation boiler, and can remote monitoring, the boiler waterproof early warning interlock that this information storage is got up.
The utility model is by sensor, and controller, monitor three part are formed.
Sensor by four stainless steels of setting differing heights extremely rod form, be vertically mounted in the sealed cylinder made from φ 89 seamless steel pipes, the utmost point hold in both hands with the cylindrical shell end cap between insulate with the long lasso of polytetrafluoroethylene (PTFE), the inner surface of end cap sprays polytetrafluorethylecoatings coatings.Be added with the power frequency low voltage pulse signal on the cylindrical shell, utilize the electric conductivity of stove water, with extremely excellent contacting, on the utmost point is held in both hands, produce liquid level signal when liquid level changes.Sensor links by cable and controller.
Controller is by the fluid level condition translation circuit, and self checking circuit, coding and decoding circuit, control pump circuit, sensor fault judging circuit, fluid level condition simulation demonstration and warning circuit, lack of water omen judging circuit and sender warning and eight parts of interlock protection circuit are formed.The extremely excellent electric potential signal of being sent here by sensor converts corresponding four kinds of liquid levels (high water level, the ordinary water level upper limit, ordinary water level lower limit, low water level) make-and-break signal to after detection identification, filtering and integration time-delay, divide two the tunnel to send, one the tunnel send the control pump circuit, the keying of control intake pump; Coding and decoding circuit is sent on another road, divides three the tunnel to send after converting five kinds of effective liquid level codes and 11 kinds of electrode failure codes to, wherein one the tunnel send the sensor fault judging circuit, holds in both hands the fault light-emitting diode display through the identification rear drive utmost point; One the tunnel through state simulation demonstration of liquor charging position, diode battle array decoding back and warning circuit, drive one group of high brightness planar LED, the color lump that forms five kinds of different colours and height on controller panel shows that simulation demonstrates utmost point low water level, low water level, ordinary water level, high water level and five kinds of boiler liquid level states of full-water level; Third Road send lack of water omen judging circuit, and after differentiating, the lack of water omen promptly send sender to report to the police and the interlock protection circuit in this way, when cutting off boiler power, reports to the police to the monitor sender.Can adopt wired or wireless dual mode to carry out the signal transmission between controller and the monitor.
Monitor is by the alarm signal pre-process circuit, the latch control circuit, and secondary warning circuit, coding and decoding and latch cicuit, lack of water omen display, time combiner circuit and time display circuit are formed.The alarm signal that controller is sent is after isolating, cushioning, send the latch control circuit, the output of latch control circuit divides three the tunnel, one tunnel output is opened the control end that latchs of latch cicuit, makes from the time of fire alarming of time synthesizer with from the warning boiler heat (batch) number code lock of coding and decoding circuit to store away and send display to show; One the tunnel send the secondary warning circuit to report to the police; Third Road is opened lack of water omen display.
The utility model compared with prior art has following advantage and characteristics:
1. sensor, controller and the monitor Trinity, be unified into system, in case when finding that boiler has lack of water operation omen, except cutting off boiler power, can also make monitor show the pot heat (batch) number and the generation moment of lack of water operation omen immediately to remote monitor warning, be convenient to handle timely and accurately accident, simultaneously, lack of water omen information can be remembered preservation, is convenient to cause of accident be analyzed afterwards.
2. the fluid level condition translation circuit of controller importation can carry out forward and reverse delay process to the liquid level make-and-break signal, and the elimination level fluctuation causes interference, guarantees that intake pump control is correct.
3. the employing digital coding is converted to five kinds of valid codes and 11 kinds of electrode failure codes with fluid level condition, to the fault energy display alarm of electrode, thereby guarantees that the controller signals sampling is correct.
4. liquid level shows employing simulation color lump, can accurately distinguish five kinds of different conditions liquid levels, and the relative position of liquid level and electrode, clear display, and intuitive is strong, handled easily.
5. operate time reading the clock display mode can accurately be differentiated utmost point low water level and lack of water omen, declares after the lack of water omen except carrying out the interlock protection boiler power, can also to guaranteeing safe operation of the boiler important use value be arranged to the monitor sender.
6. adopt unique self-test technology, can carry out online self checking to controller at any time, improved the reliability of controller work greatly.
7. adopt the MOS integrated circuit, the utilization digital technology, circuit working is on off state, the no signal fault in enlargement, good reliability, vulnerability to jamming is strong.
The utility model compared with prior art, in serviceability, life cycle, the generation of accident is avoided in handled easily and management, reducing the manufacturing cost aspects all has significant progress.
The utility model accompanying drawing:
Accompanying drawing 1 is an electric pole type liquid level sensor structure chart, 1 is sensor among the figure, and 2 is the electrode I, and 3 is the electrode II, 4 is the electrode III, 5 is the electrode IV, and 6 is cylindrical shell, and 7 is the polytetrafluoroethylene (PTFE) coating layer, 8 are the long lasso of teflon insulation, 9 is end cap, and 10 is insulating washer, and 11 is the teflon insulation lasso;
Accompanying drawing 2 is controller and monitor outline drawing, and 12 is the connecting line of sensor and controller among the figure, and 13 is controller, 14 is the fluid level condition display screen, 15 are the warning light-emitting diode display, and 16 is light-emitting diode display out of service, and 17 is utmost point low water level time reading the clock display, 18 is magnetic key patchhole out of service, 19 is the connecting line of controller and monitor, and 20 is monitor, and 21 is boiler water shortage omen information display screen, 22 is date indicator display, and 23 is time display;
Accompanying drawing 4 is controller partial circuit figure;
Accompanying drawing 5 is monitor partial circuit figure;
Accompanying drawing 6 is the self checking circuit diagram;
Accompanying drawing 7 is the monitor power supply circuit.
Below in conjunction with accompanying drawing, the utility model embodiment is described:
The appearance and size of controller 13 is wide 160mm, high 80mm, long 250mm, the planar LED of 7 big light-emitting areas of high brightness of fluid level condition display screen 14 usefulness constitutes on its panel, be carved with four simulation electrode, can simulate five kinds of states that show water level: boiler water level is higher than electrode I 2, and it is red that color lump shows, expression full-water level (buzzer continuous alarm); Water level is lower than electrode I 2, and it is orange-yellow that color lump shows, the expression high water level; Water level is lower than electrode II 3, and it is green that color lump shows, the expression ordinary water level upper limit; Water level is lower than electrode III 4, and it is orange that color lump shows, expression ordinary water level lower limit (buzzer is intermittently reported to the police); Water level is lower than electrode IV 5, and the color lump flicker glows, the expression low water level, at this moment; time reading the clock display 17 enters reading the clock, and its time setting range is 10 to 190 seconds, in case surpass setting valve; controller 13 cuts off the boiler power supply immediately, and boiler is implemented the urgent blowing out of protectiveness, outwards reports to the police simultaneously.Controller 13 is with special lucite magnetic spoon key, be inserted into rectangular opening 18 after, just can recover the control power supply of boiler electric device.Signal transmission between controller 13 and the monitor 20 can adopt wired or wireless dual mode to carry out.
Monitor 20 can adopt the standard casing, and lack of water omen information display screen 21 usefulness charactrons and special Chinese PV film constitute on its panel, and date indicator display 22 and time display 23 are all formed with the 4-digit number screen.
Circuit implementation process of the present utility model is:
(contrast accompanying drawing 4) in controller 13 by diode D
1～D8, resistance R
1～R
8, capacitor C
1～C
8And IC
1(MC1413), IC
2(CD4049) form fluid level condition converter 24, by sensor DJ
1～DJ
4The electrode make-and-break signal of sending into is exported the liquid level signal of the accurate level of four road signs again after paraphase after detection, filtering, paraphase, integration time-delay.Wherein, R
5～
8, C
5～8D
5～8The integration delayer that constitutes.Control pump circuit 27 is by 2/6 IC
2(CD4049), 1/6 IC12(CD4069), 1/4 IC
13(CD4081), 3/7 IC
4(MC1413), resistance R
9～10, R
12～13, single-phase silicon-controlled SC
1(MCR100-8), LED(L triode BG1(9013),
1～2) and relay 1J(HG4123) form, the effect of this circuit is by relay 1J control intake pump.(DJ when liquid level is in low water level
3Break away from liquid level), BG1 base stage and SC
1BG1 and SC high level appears, in the control utmost point
1Conducting causes IC15 the 1st pin high level to occur.IC15 the 2nd pin connects the TP end, and the TP end is low level when controller is in the self checking state for self checking circuit 25 control ends, is high level during running status.This moment IC
4The 7th pin is a high level, and the 10th pin is a low level, 1J adhesive, the water inlet of control water pump, (DJ when liquid level is in high level
2The contact liquid level), BG1 ends, IC
4The 7th pin is a low level, and the 1J dead electricity discharges, the water pump stall.So go round and begin again, the control liquid level is all the time at DJ
3With DJ
2In the scope.Coding and decoding circuit 26 is by single 16 tunnels analogy switch I C
3(CD4067) and diode battle array D
9～D
26Form.Sensor fault is differentiated display circuit 28 by a slice IC16(CD4078), 2/3 IC13(CD4075), resistance R
11And L
3Form, its effect is identification and show electrode fault.Being in high water level with liquid level is example, when liquid level is in high water level, and DJ
2, DJ
3, DJ
4All contact IC with stove water
3The corresponding binary code " 0111 " of input, suppose DJ at this moment
2Lost efficacy, so above-mentioned signal code becomes " 0101 ", converts decimal number " 5 ", IC to through IC3
3The 4th pin output becoming high level, warp or door IC
16And IC
13After still be high level, this high level drives L
3Work, the show electrode fault.Fluid level condition simulation demonstration and warning circuit are by 4/7 darlington array, IC
4(MC1413), 1/4 IC
14(CD4081), darlington array IC
5(MC1413), R
14～26, buzzer YD(PT27) and P
1～P
7Totally 7 double-colored planar LEDs of the big light-emitting area of high brightness (BMG245A-OG) are formed.IC
3Output signal through D
9～D
26Send into corresponding M C1413 port after the decoding of diode battle array, directly drive P
1～P
7In one or more groups, reach the effect that simulation shows liquid level.With the high water level is example, IC
3The corresponding binary code " 0111 " of input, convert decimal number " 7 ", IC to through IC3
3The 2nd pin is output as high level, thereby causes D
13, D
16, D
20, D
22, D
23, D
25Conducting is through IC
4, IC
5After the driving, P
1～P
6Six groups of red, green double-colored planar LEDs are all lighted, and demonstrate a bulk of orange light belt at the fluid level condition display screen 14 of controller, and under the setting off who is engraved in four simulation electrode on the display screen 14, simulation demonstrates boiler high water level state.Lack of water omen judging circuit 30 is by second signal generator, 2/6 IC
12(CD4069), R
27～28, potentiometer W, capacitor C
9, counter IC
6～7(CD4518), decoder IC
8～IC
10(CD4513), charactron X
1～X
3(5EF1051KP), reading the clock control gate 1/4IC
14(CD4081), reset circuit 2/6IC
12(CD4069), 1/4IC
14(CD4081), 1/3IC
13Hall element IC11(UN3020) and R (CD4075),
29, R
30, R
31, R
37, C
10, L
5And BG
3, reading the clock prewired circuit diode D
27～30, dial switch K
1, R
32～33, 1/4IC
14(CD4081) totally seven parts are formed, and it exports direct place in circuit 31, when declaring when to have the lack of water omen SC
2High level appears in control end, SC
2Conducting, relay 2J(HG4123) adhesive, cut off boiler power by the relay 2J that continues and report to the police to the monitor sender simultaneously.
(contrast accompanying drawing 5) supposes No. 1 boiler controller generation lack of water omen warning, and the warning input signal is through IC
1(MC1413) paraphase is isolated again through IC
2(CD4049) inverting buffer is at IC
2The 2nd pin high level appears, through IC
4(C304) be translated into binary-coded decimal and be " 0001 ", send IC
5(CD4042 ｀ 4 d latch input is with its while, gate circuit IC
3High level also appears in output 13 pin (CD4072), through R
2Single-phase silicon-controlled SC is triggered in the back
1, SC
2(MCR100-8) conducting is at R
6Form pressure drop and make IC
5～IC
16(CD4042) the 5th foot control system of 12 4 d latch brings out the high level that existing control data latchs, wherein IC
5Sending IC again after the pinning of the binary code of warning boiler heat (batch) number
17(CD4511) be translated into the seven segment numerical signal, light charactron X
1(5EF1031KP) show heat (batch) number.IC
6～
16By time synthesizer IC
21, IC
22(LM8363) code of the time of fire alarming sent of two noisy digital clock IC pins, and send display X simultaneously
2, X
3Reduction demonstrates time of fire alarming.IC
21, IC
22Another send along separate routes display X respectively
4, X
5(5EF4061K) show current time, IC
20(5369) and crystal oscillator H.T, capacitor C
5, C
6, resistance R
2, constitute the standard markers.BG1(9013 meanwhile) work conducting alarm generator IC18(KD9561), its output signal is through IC19(LM386) amplify back promotion loudspeaker YD activating alarm.Because SC
1Anode meet protection power supply Ue, so, even outage, IC
5～16The control high level that latchs of latch is still dashed forward effectively, and assurance alarm indication content can not lost, and as removing internal memory, only need rotating, key switch Kc gets final product.
(contrast accompanying drawing 6), the pulse per second (PPS) CP end self checking point T of self checking circuit 25
1, T
2, T
3, T
4And A
1, A
2, B
1, B
2, be connected with corresponding each point in the accompanying drawing 4 respectively with the TP point.In addition, the E among Fig. 6 is connected to the cylindrical shell of electrode sensor.Clicking AN, by IC19(CD4013) the 1st pin of the anti-shake on-off circuit that constitutes goes out high level, and the R38 of leading up to makes BG
4(9013) conducting makes relay 3J, 4J(HG4123) adhesive, and the power frequency action of low-voltage pulse that controller is mail to sensor cuts off, and passes through A simultaneously
1, A
2And B
1, B
2Short circuit, with the C among Fig. 4
5, C
6Discharge resistance R
5, R
6Short circuit.IC
19The output of another road of 1 pin, with IC
15(CD4081) pulse control gate is opened, and makes pulse per second (PPS) pass through, and delivers to pulsqe distributor IC17(CD4017) pulse input end, by gate circuit IC
18(CD4071) to the combination of IC17 output level, at self checking point T
4, T
3, T
2And T
1The progressive high level that occurs, for controller provides the simulation self-checking signal source that liquid level changes, whether working properly nationality is to judge controller.
IC in (contrast accompanying drawing 4,7) controller power circuit 32 and the monitor power supply circuit 40
20IC
23Be three terminal integrated voltage stabilizer (7812), QZ
1,2(1A, 100V), Ee is layer-built battery (6F22-9V) for the rectifier bridge heap.
Claims (10)
1, the anti-lack of water early warning interlock of a kind of boiler, contain sensor 1, controller 13, sensor 1 is made of four stainless steel utmost point handful I, II, III, IV 2,3,4,5 of setting differing heights, be vertically mounted in the sealed cylinder 6 made from φ 89 seamless steel pipes, with the long lasso insulation of polytetrafluoroethylene (PTFE), end cap 9 inner surfaces spraying polytetrafluorethylecoatings coatings is characterized in that between utmost point handful and the end cap 9:
(1) forms by sensor 1, controller 13, monitor 20 3 parts;
(2) controller 13 is made up of fluid level condition translation circuit 24, self checking circuit 25, coding and decoding circuit 26, control pump circuit 27, sensor fault judging circuit 28, fluid level condition simulation demonstration and warning circuit 29, lack of water omen judging circuit 30 and sender warning and interlock protection circuit 31;
(3) monitor 20 is made up of alarm signal pre-process circuit 33, latch control circuit 34, secondary warning circuit 35, coding and decoding and latch cicuit 36, lack of water omen display 37, time combiner circuit 38, time display circuit 39.
2, interlock according to claim 1 is characterized in that the fluid level condition translation circuit 24 of controller 13 is made up of the integration delayer, and the liquid level make-and-break signal is carried out forward and reverse time-delay.
3, interlock according to claim 1, the self checking circuit 25 that it is characterized in that controller 13 be by the pulse per second (PPS) source, the pulse control gate, and pulsqe distributor is formed.
4, interlock according to claim 1 is characterized in that the coding and decoding circuit 26 of controller is made up of single 16 tunnels analogy switches.
5, according to claim 1,4 described interlocks, it is characterized in that in the controller 13 sensor fault judging circuit 28 by single 16 tunnels analogy switches, LED and or door form.
6, interlock according to claim 1 is characterized in that the fluid level condition simulation display circuit 29 of controller 13 is made up of double-colored light bar led of the big light-emitting area of high brightness and darlington array.
7, interlock according to claim 1, the lack of water omen judging circuit 30 that it is characterized in that controller 13 are by second signal generator, counter, decoder, charactron, reading the clock control gate, reset circuit, and the reading the clock prewired circuit is formed.
8, interlock according to claim 1 is characterized in that the latch cicuit 36 in the monitor 20 is made up of 4 d latch.
9, interlock according to claim 1 is characterized in that: the time combiner circuit 38 in the monitor 20 is made up of the two noisy digital clock IC of two LM8363.
10, interlock according to claim 1 is characterized in that: the latch control circuit 34 in the monitor 20 is made up of single-phase silicon-controlled and key switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215917 CN2101178U (en) | 1991-09-19 | 1991-09-19 | Interlock device for boiler water shortage protecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91215917 CN2101178U (en) | 1991-09-19 | 1991-09-19 | Interlock device for boiler water shortage protecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2101178U true CN2101178U (en) | 1992-04-08 |
Family
ID=4923930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91215917 Withdrawn CN2101178U (en) | 1991-09-19 | 1991-09-19 | Interlock device for boiler water shortage protecting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2101178U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8047046B2 (en) | 2008-02-08 | 2011-11-01 | GM Global Technology Operations LLC | Systems and method for monitoring urea level |
| CN103017853A (en) * | 2011-09-20 | 2013-04-03 | 徐斌 | Water level probe with self-checking function and self-checking method of water level probe |
| CN103499086A (en) * | 2013-10-10 | 2014-01-08 | 江苏维德锅炉有限公司 | Hydraulic control circuit with locking function |
| CN101952592B (en) * | 2007-12-07 | 2016-05-18 | 斯得-莱特工业有限责任公司 | Capacitance level transducer |
-
1991
- 1991-09-19 CN CN 91215917 patent/CN2101178U/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101952592B (en) * | 2007-12-07 | 2016-05-18 | 斯得-莱特工业有限责任公司 | Capacitance level transducer |
| US8047046B2 (en) | 2008-02-08 | 2011-11-01 | GM Global Technology Operations LLC | Systems and method for monitoring urea level |
| CN101566490B (en) * | 2008-02-08 | 2012-11-28 | 通用汽车环球科技运作公司 | System and method for monitoring urea level |
| CN103017853A (en) * | 2011-09-20 | 2013-04-03 | 徐斌 | Water level probe with self-checking function and self-checking method of water level probe |
| CN103499086A (en) * | 2013-10-10 | 2014-01-08 | 江苏维德锅炉有限公司 | Hydraulic control circuit with locking function |
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| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| DD01 | Delivery of document by public notice |
Addressee: Fang Jinyang Document name: Payment notice |
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