CN2374877Y - Safety protector of electrothermal boiler - Google Patents

Safety protector of electrothermal boiler Download PDF

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Publication number
CN2374877Y
CN2374877Y CN 99220626 CN99220626U CN2374877Y CN 2374877 Y CN2374877 Y CN 2374877Y CN 99220626 CN99220626 CN 99220626 CN 99220626 U CN99220626 U CN 99220626U CN 2374877 Y CN2374877 Y CN 2374877Y
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CN
China
Prior art keywords
pin
resistance
integrated circuit
diode
circuit
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Expired - Fee Related
Application number
CN 99220626
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Chinese (zh)
Inventor
刘玉
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Niu Chuanbin
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Niu Chuanbin
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Priority to CN 99220626 priority Critical patent/CN2374877Y/en
Application granted granted Critical
Publication of CN2374877Y publication Critical patent/CN2374877Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model provides a safety protector of an electric heating boiler, which is composed of an electric leakage and electric shock protection circuit A, a power supply super undervoltage protection circuit B, a boiler voltage protection circuit C, and an intelligent query circuit D. The utility model is characterized in that the electric leakage and electric shock protection circuit A, the power supply super undervoltage protection circuit B, and the boiler voltage protection circuit C are connected in parallel with the intelligent query circuit D; the intelligent query circuit D is connected with the communication port of a computer. The utility model has the advantages of reasonable design, simple structure, easy manufacturing, small size, convenient operation, safety, etc.

Description

The boilers heated electrically protector
The utility model relates to a kind of industrial automation control device, specifically a kind of boilers heated electrically protector.
In order to reduce the pollution of coal combustion or the oily waste gas that is produced to environment; people progressively promote the use of boilers heated electrically; the in use existing deficiency of the boilers heated electrically of prior art is not have perfect boilers heated electrically automatic control device; as the earth leakage protection of getting an electric shock, the under-voltage detection of superpressure of supply voltage and the detection of boiler pressure etc., thereby in use have the hidden danger that has an accident.
The purpose of this utility model provides a kind of get an electric shock boilers heated electrically protector of detection of earth leakage protective under-voltage detection of superpressure with supply voltage and boiler pressure of boilers heated electrically that is specifically designed to.
The purpose of this utility model realizes in the following manner; electric leakage electric shock testing circuit is set in the boilers heated electrically protector; voltage superpressure undervoltage detection circuit; boiler pressure testing circuit and intelligent fault enquiry circuit; electric leakage electric shock testing circuit; voltage superpressure undervoltage detection circuit; boiler pressure testing circuit and intelligent fault enquiry circuit also connect; the intelligent fault enquiry circuit is then joining with the communication port of computing machine; all connect one group of electric leakage electric shock testing circuit on each group electric heater in the boilers heated electrically; each group electric leakage electric shock testing circuit all joins with the fault inquiry circuit; just will leak electricity when this group electric heater has electric shock or leak current fault or electric shock signal feeds back to the intelligent fault enquiry circuit when current transformer in the electric leakage electric shock testing circuit detects, computing machine just should organize electric heater and cut out.Same as line voltage superpressure or under-voltage, boiler pressure is excessive, the intelligent fault enquiry circuit can both in time detect, and by computing machine boilers heated electrically is carried out robotization then and controls.
Accompanying drawing I is the electrical block diagram of boilers heated electrically protector;
Accompanying drawing 2 is the schematic block circuit diagram of boilers heated electrically protector.
Explain below with reference to Figure of description boilers heated electrically protector of the present utility model being done.
Boilers heated electrically protector of the present utility model; its structure is to be made of leak shock holding circuit A, power supply ultra under-pressure holding circuit B, boiler pressure holding circuit C and intelligence inquire circuit D; leak shock holding circuit A, power supply ultra under-pressure holding circuit B, boiler pressure holding circuit C and intelligence inquire circuit D also connect, and intelligence inquire circuit D connects with the communication port of computing machine.
Leak shock holding circuit A is by integrated circuit (IC) 1-IC 4, diode D 1-D 13, resistance R-R 12, potentiometer R 9, capacitor C-C 3And electric current mutual inductor LA forms electric current mutual inductor LA, resistance R 1And capacitor C connects together the two ends series resistor R of resistance R 21, R 22With diode D 1, D 2Two ends be connected to integrated circuit (IC) 1+ ,-pin on, integrated circuit (IC) 1O pin serial connection diode D 4, resistance R 6, capacitor C 3With integrated circuit (IC) 3+ pin and IC 4-pin and connect resistance R 4, R 5Be serially connected in diode D 4Negative pole and ground wire between, resistance R 4, R 5Between contact and diode D 3Positive pole and integrated circuit (IC) 1-pin joins the D of diode 3Negative pole connect integrated circuit (IC) 1The O pin, resistance R is connected on capacitor C 2, C 3Positive pole between, capacitor C 3The minus earth line, resistance R 10, potentiometer R 9, R 8, diode D 6, D 5, D 7Be serially connected in positive source V CCAnd between the ground wire, integrated circuit (IC) 4+ pin series resistor R 12With positive source V CCJoin resistance R 7With diode D 5And connect integrated circuit (IC) 2-pin series resistor R 11With potentiometer R 9Moving contact join integrated circuit (IC) 3-pin and diode D 6Positive pole join diode D 8, D 9Positive pole connect integrated circuit (IC) 4+ pin, diode D 10, D 11Positive pole connect integrated circuit (IC) 3+ pin, diode D 12, D 13Positive pole connect integrated circuit (IC) 2+ pin, diode D 8Husband's utmost point and diode D 10, D 13Negative pole and meet diode D 9Negative pole and diode D 11, D 12Negative pole and connect.
Power supply ultra under-pressure holding circuit B is by transformer B 1Diode D 14-D 16, resistance R 13, R 14, capacitor C 5-C 8Form diode D 14-D 16Form bridge rectifier, anodal output connecting resistance R 13, capacitor C 5, C 6, capacitor C 5, C 6The other end connect wires resistance R 13Other end connecting resistance R 14, capacitor C 7, C 8, resistance D 14, capacitor C 7, C 8Other end ground wire.
Boiler pressure holding circuit C integrated circuit (IC) 5, IC 6, resistance R 15-R 24Form resistance R 17-R 20Be concatenated into bridge pressure sensor, resistance R 19, R 20And contact meet positive source V CC, resistance R 17, R 18And the contact ground wire, resistance R 18, R 19And contact series resistor R 21Connect integrated circuit (IC) 6-pin, resistance R 17, R 20And contact series resistor R 22With integrated circuit (IC) 5+ pin joins resistance R 23-R 25An end and integrated circuit (IC) 5-pin joins resistance R 23Other end ground wire, resistance R 24, R 25The other end and resistance R 16Two ends join resistance R 15Two ends and integrated circuit (IC) 6-pin and O pin join.
Intelligence inquire circuit D is by integrated circuit (IC) 7-IC 9Form integrated circuit (IC) 71 pin and the diode D among the leak shock holding circuit A 13, D 10, D 8Negative pole join integrated circuit (IC) 96.0 pin and the diode D among the leak shock holding circuit A 9, D 11, D 12Negative pole join integrated circuit (IC) 95.3 pin and integrated circuit (IC) 7, IC 817 pin and connect integrated circuit (IC) 96.3-6.6 pin and integrated circuit (IC) 7, IC 8The 18-22 pin and connect integrated circuit (IC) 95.1 pin and the integrated circuit (IC) among the boiler pressure holding circuit C 6The O pin join integrated circuit (IC) 95.0 pin and the resistance R among the power supply ultra under-pressure holding circuit B 14, capacitor C 7, C 8And connect integrated circuit (IC) 95.4 pin connecting resistance R 26And capacitor C 4And contact, resistance R 26Another termination positive source V CC, capacitor C 4Other end ground wire, integrated circuit (IC) 95.2,6.7 pin and the communication port of computing machine and connect.
Embodiment:
Its processing and fabricating of boilers heated electrically protector of the present utility model is very simple and convenient, and processing and fabricating gets final product shown in the by specification accompanying drawing.The model of employed IC1-IC4 integrated circuit is LM324 in the circuit.The model of IC5IC6 integrated circuit is TL4051.The model of integrated circuit (IC) 7IC8 is 4,067 two 16 analog switches, and the model of IC9 integrated circuit is 16C71.Resistance R 18 is used as pressure transducer for voltage dependent resistor (VDR).LA is a current transformer.Other elements are the universal electric element.Computing machine can use the multi-purpose computer of various configurations or the single-chip microcomputer of industrial controlling.
Safety protector of electrothermal boiler of the present utility model is compared with existing technology, have reasonable in design, Simple in structure, be easy to processing, the characteristics such as volume is little, esy to use, safe and reliable, thereby, tool Good popularizing value is arranged.
Except the described technical characterictic of specification, be the known technology of those skilled in the art.

Claims (5)

1. boilers heated electrically protector; comprise leak shock holding circuit A, power supply ultra under-pressure holding circuit B, boiler pressure holding circuit C and intelligence inquire circuit D; it is characterized in that leak shock holding circuit A, power supply ultra under-pressure holding circuit B, boiler pressure holding circuit C and intelligence inquire circuit D and connect that intelligence inquire circuit D connects with the communication port of computing machine.
2. boilers heated electrically protector according to claim 1 is characterized in that leak shock holding circuit A is by integrated circuit (IC) 1-IC 4, diode D 1-D 13, resistance R-R 12, potentiometer R 9, capacitor C-C 3And electric current mutual inductor LA forms electric current mutual inductor LA, resistance R 1And capacitor C connects together resistance R 1Two ends series resistor R 21, R 22With diode D 1, D 2Two ends be connected to integrated circuit (IC) 1+ ,-pin on, integrated circuit (IC) 1O pin serial connection diode D 4, resistance R 6, capacitor C 3With integrated circuit (IC) 3+ pin and IC 4-pin and connect resistance R 4, R 5Be serially connected in diode D 4Negative pole and ground wire between, resistance R 4, R 5Between contact and diode D 3Positive pole and integrated circuit (IC) 1-pin joins the D of diode 3Negative pole connect integrated circuit (IC) 1The O pin, resistance R is connected on capacitor C 2, C 3Positive pole between, capacitor C 3The minus earth line, resistance R 10, potentiometer R 9, R 8, diode D 6, D 5, D 7Be serially connected in positive source V CCAnd between the ground wire, integrated circuit (IC) 4+ pin series resistor R 12With positive source V CCJoin resistance R 7With diode D 5And connect integrated circuit (IC) 2-pin series resistor R 11With potentiometer R 9Moving contact join integrated circuit (IC) 3-pin and diode D 6Positive pole join diode D 8, D 9Positive pole connect integrated circuit (IC) 4+ pin, diode D 10, D 11Positive pole connect integrated circuit (IC) 3+ pin, diode D 12, D 13Positive pole connect integrated circuit (IC) 2+ pin, diode D 8Husband's utmost point and diode D 10, D 13Negative pole and meet diode D 9Negative pole and diode D 11, D 12Negative pole and connect.
3. boilers heated electrically protector according to claim 1 is characterized in that power supply ultra under-pressure holding circuit B is by transformer B 1Diode D 14-D 16, resistance R 13, R 14, capacitor C 5-C 8Form diode D 14-D 16Form bridge rectifier, anodal output connecting resistance R 13, capacitor C 5, C 6, capacitor C 5, C 6The other end connect wires resistance R 13Other end connecting resistance R 14, capacitor C 7, C 8, resistance D 14, capacitor C 7, C 8Other end ground wire.
4. boilers heated electrically protector according to claim 1 is characterized in that boiler pressure holding circuit C integrated circuit (IC) 5, IC 6, resistance R 15-R 24Form resistance R 17-R 20Be concatenated into bridge pressure sensor, resistance R 19, R 20And contact meet positive source V CC, resistance R 17, R 18And the contact ground wire, resistance R 18, R 19And contact series resistor R 21Connect integrated circuit (IC) 6-pin, resistance R 17, R 20And contact series resistor R 22With integrated circuit (IC) 5+ pin joins resistance R 23-R 25An end and integrated circuit (IC) 5-pin joins resistance R 23Other end ground wire, resistance R 24, R 25The other end and resistance R 16Two ends join resistance R 15Two ends and integrated circuit (IC) 6-pin and O pin join.
5. boilers heated electrically protector according to claim 1 is characterized in that intelligence inquire circuit D is by integrated circuit (IC) 7-IC 9Form integrated circuit (IC) 71 pin and the diode D among the leak shock holding circuit A 13, D 10, D 8Negative pole join integrated circuit (IC) 96.0 pin and the diode D among the leak shock holding circuit A 9, D 11, D 12Negative pole join integrated circuit (IC) 95.3 pin and integrated circuit (IC) 7, IC 817 pin and connect integrated circuit (IC) 96.3-6.6 pin and integrated circuit (IC) 7, IC 8The 18-22 pin and connect integrated circuit (IC) 95.1 pin and the integrated circuit (IC) among the boiler pressure holding circuit C 6The O pin join integrated circuit (IC) 95.0 pin and the resistance R among the power supply ultra under-pressure holding circuit B 14, capacitor C 7, C 8And connect integrated circuit (IC) 95.4 pin connecting resistance R 26And capacitor C 4And contact, another termination positive source V of resistance R 26 CC, capacitor C 4Other end ground wire, integrated circuit (IC) 95.2,6.7 pin and the communication port of computing machine and connect.
CN 99220626 1999-04-23 1999-04-23 Safety protector of electrothermal boiler Expired - Fee Related CN2374877Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 99220626 CN2374877Y (en) 1999-04-23 1999-04-23 Safety protector of electrothermal boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 99220626 CN2374877Y (en) 1999-04-23 1999-04-23 Safety protector of electrothermal boiler

Publications (1)

Publication Number Publication Date
CN2374877Y true CN2374877Y (en) 2000-04-19

Family

ID=34011336

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 99220626 Expired - Fee Related CN2374877Y (en) 1999-04-23 1999-04-23 Safety protector of electrothermal boiler

Country Status (1)

Country Link
CN (1) CN2374877Y (en)

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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