CN103472738A - Cooling water failure alarm - Google Patents
Cooling water failure alarm Download PDFInfo
- Publication number
- CN103472738A CN103472738A CN 201210184010 CN201210184010A CN103472738A CN 103472738 A CN103472738 A CN 103472738A CN 201210184010 CN201210184010 CN 201210184010 CN 201210184010 A CN201210184010 A CN 201210184010A CN 103472738 A CN103472738 A CN 103472738A
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- water
- detection probe
- cooling water
- circuit
- alarm
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Abstract
The name of the invention is a cooling water failure alarm. The invention relates to an alarm which gives an alarm when running water is used to cool equipment and there exists a low water pressure failure. A sensor is adopted to detect water pressure. When a water pipe is broken at the rear end of the sensor, the sensor cannot detect water pressure. And then, when water pressure is not stable, misinformation or non-reporting easily happens. The cooling water failure alarm is mainly adopted to solve the above problem. According to the cooling water failure alarm, an outlet pipe is placed horizontally; an overflow detection probe is installed below the front part of an outlet end of the outlet pipe; and the overflow detection probe is connected with an input end of a monostable circuit through a conductor. According to the principle that higher water pressure, the outlet range is farther, the overflow detection probe is installed below the front part of the water outlet. When water pressure is not normal, outlet water drops on the overflow detection probe to trigger the monostable circuit and cut off the major loop power. The cooling water failure alarm provided by the invention has advantages of simple structure and high alarm sensitivity, can be conveniently adjusted, and is especially suitable for places where voltage is unstable, electrical network disturbance is high and water flow is not stable.
Description
Technical field
The present invention relates to industrial cooling water system failure warning device, relate to specifically and adopt flowing water to diesel engine unit, intermediate frequency, high frequency unit, power supply, welding machine, chemical system carries out cooling, the alarm while the too low fault of hydraulic pressure occurring.
Background technology
Known diesel engine unit, intermediate frequency, high frequency unit, power supply, welding machine, and the system such as chemical industry when work, need to adopt water to carry out cooling, for assurance equipment runs well, usually the inlet end at equipment has added hydraulic pressure sensor, when hydraulic pressure is not enough, sensor output signal, cut off main circuit and report to the police.But the method has following limitation: 1. when water pipe from breaking in the sensor rear end, sensor can't detect; 2. in the unsettled place of hydraulic pressure, easily report by mistake or do not report; 3. the type selecting of sensor, purchase comparatively difficulty.
Summary of the invention
The objective of the invention is in order to overcome above-mentioned deficiency, and provide a kind ofly can set alarming value according to different discharge, easy to adjust, highly sensitive, the cooling water fault alarm that not there will be wrong report or do not report.
Technical solution of the present invention is: the cooling water fault alarm is: the rising pipe horizontal positioned, cross the inferoanterior that the water detection probe is arranged on the rising pipe water side, and cross the water detection probe by the input end of wire order steady-state circuit.
The water detection probe of crossing described in technical solution of the present invention is comprised of insulcrete and the stainless steel probe be fixed on insulcrete, and mutually insulated between two adjacent probes, stagger and connect into two utmost points.
Monostable circuit described in technical solution of the present invention comprises and is connected on the 4. resistance R on pin of time base circuit IC2
2and capacitor C
5, in capacitor C
5on be parallel with reset switch K, cross the 2. pin that the water detection probe meets time base circuit IC2, the 3. pin of time base circuit IC2 passes through resistance R
3connect the base stage of triode T1, on the collector of triode T1, be connected to relay J, on the main contactor coil that a pair of normally closed contact out1 of relay J and out2 are serially connected in protection equipment, the power supply of monostable circuit connects the control power supply of equipment by rectifier.
The present invention is larger according to hydraulic pressure, and the principle that the water outlet distance is far away, installed the water detection probe at the inferoanterior of rising pipe water side, when hydraulic pressure is normal, the aobvious para-curve of water outlet falls, and pops one's head in inoperative, when going out water speed lower than certain value, it is upper that the water flowed out is fallen probe, and between probe, resistance diminishes rapidly, thereby trigger monostable circuit, cut off at once main circuit power and report to the police, reach the purpose of protection equipment, after hydraulic pressure is normal, by reset switch, can recover normal; The present invention is simple in structure, and warning sensitivity is high, and conveniently adjusted, to voltage instability, electrical network, disturbs place large, flow instability particularly applicable.
The accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is monostable holding circuit figure.
Embodiment
As shown in Figure 1, rising pipe 3 horizontal positioned, will cross water detection probe 2 and be arranged on the inferoanterior of rising pipe 3 water delivering orifices, crosses water detection probe 2 and be comprised of insulcrete and the stainless steel probe that is fixed on insulcrete, mutually insulated between two adjacent probes, stagger and connect into two utmost points; When closing penstock, water droplet should be able to drop on the probe above water detection probe 2, adjusted the relative position of water detection probe 2 and rising pipe 3 water delivering orifices, can regulate the sensitivity of alarm.Cross two utmost points of water detection probe 2 by wire order steady-state circuit 4, the signal detected is sent to the input end of monostable circuit 4, the output terminal out1 of monostable circuit 4, out2 is serially connected in the main control loop of equipment, during normal condition, is normally off.
As shown in Figure 2; the monostable holding circuit is comprised of power supply, mistake water detection probe 2, time base circuit IC2, output circuit four parts; on the control power supply that the power supply in1 of circuit and in2 are connected on equipment; when the control power supply of equipment obtain electric after; convert the alternating current of low pressure to through transformer B, by bridge rectifier V, filter capacitor C1; three terminal regulator IC1, capacitor C 2 becomes direct current 12V stabilized power source.Resistance R 2, capacitor C 5 form a monostable circuit 4 with time base circuit IC2, resistance R 2, capacitor C 5 connect the 4. pin of time base circuit IC2, be parallel with reset switch K on capacitor C 5, the 2. pin of time base circuit IC2 is taken over water detection probe 2, also be connected to resistance R 1 on the 2. pin of time base circuit IC2, the 3. pin of time base circuit IC2 connects the base stage of triode T1 by resistance R 3, be connected to relay J on the collector of triode T1, be parallel with diode D on relay J, a pair of normally closed contact out1, the out2 of relay J is serially connected on the main contactor coil that will protect equipment; Also be connected to high loudness audible-visual annunciator SP on the collector of triode T1; Principle of work: when normal hydraulic pressure, the 3. pin of time base circuit IC2 is low level, and relay J is failure to actuate, the main circuit normal operation of equipment; When hydraulic pressure is too low, cross on water detection probe 2 probes when the globule is arranged, the 2. pin of time base circuit IC2 becomes low level, the circuit upset, 3. pin output high level, drive relay J to obtain electric through resistance R 3, triode T1, the relay J adhesive, normally closed contact out1, out2 disconnect, and the main contactor of equipment cuts off the power supply, and reach the purpose of protection equipment; Simultaneously, high loudness audible-visual annunciator SP reports to the police, and reminds operator's chilled water to break down.Only fix a breakdown after water, and the water that will cross on water detection probe 2 probes removes, press reset switch K, time base circuit IC2 could recover to work.At the 5. pin of time base circuit IC2 with 7. on pin, be connected to respectively anti-interference capacitor C3, C4, prevent misoperation.Also be connected to resistance R 1 on the 2. pin of time base circuit IC2, its resistance can suitably be adjusted according to local water quality.
Claims (3)
1. a cooling water fault alarm is characterized in that: rising pipe (3) horizontal positioned, cross the inferoanterior that water detection probe (2) is arranged on rising pipe (3) water side, and cross water detection probe (2) by the input end of wire order steady-state circuit (4).
2. cooling water fault alarm according to claim 1 is characterized in that: the described water detection probe (2) of crossing is comprised of insulcrete and the stainless steel probe that is fixed on insulcrete, and mutually insulated between two adjacent probes, stagger and connect into two utmost points.
3. cooling water fault alarm according to claim 1 is characterized in that: described monostable circuit (4) comprises and is connected on the 4. resistance R on pin of time base circuit IC2
2and capacitor C
5, in capacitor C
5on be parallel with reset switch K, cross the 2. pin that water detection probe (2) meets time base circuit IC2, the 3. pin of time base circuit IC2 passes through resistance R
3connect the base stage of triode T1, on the collector of triode T1, be connected to relay J, on the main contactor coil that a pair of normally closed contact out1 of relay J and out2 are serially connected in protection equipment, the power supply of monostable circuit (4) connects the control power supply of equipment by rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210184010 CN103472738A (en) | 2012-06-06 | 2012-06-06 | Cooling water failure alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210184010 CN103472738A (en) | 2012-06-06 | 2012-06-06 | Cooling water failure alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103472738A true CN103472738A (en) | 2013-12-25 |
Family
ID=49797630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210184010 Pending CN103472738A (en) | 2012-06-06 | 2012-06-06 | Cooling water failure alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103472738A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215318A (en) * | 2015-10-21 | 2016-01-06 | 太仓海嘉车辆配件有限公司 | A kind of condition checkout gear and cooling controller |
| CN106609749A (en) * | 2015-10-23 | 2017-05-03 | 现代自动车株式会社 | System and method for diagnosing state of cooling water |
-
2012
- 2012-06-06 CN CN 201210184010 patent/CN103472738A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215318A (en) * | 2015-10-21 | 2016-01-06 | 太仓海嘉车辆配件有限公司 | A kind of condition checkout gear and cooling controller |
| CN106609749A (en) * | 2015-10-23 | 2017-05-03 | 现代自动车株式会社 | System and method for diagnosing state of cooling water |
| CN106609749B (en) * | 2015-10-23 | 2019-08-30 | 现代自动车株式会社 | System and method for diagnosing cooling water state |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131225 |