CN113820597A - Water supply equipment safety inspection device - Google Patents
Water supply equipment safety inspection device Download PDFInfo
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- CN113820597A CN113820597A CN202111154135.XA CN202111154135A CN113820597A CN 113820597 A CN113820597 A CN 113820597A CN 202111154135 A CN202111154135 A CN 202111154135A CN 113820597 A CN113820597 A CN 113820597A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
- G01R31/343—Testing dynamo-electric machines in operation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
Abstract
The invention discloses a safety detection device for water supply equipment, which effectively solves the problem that the current increase of a motor cannot be quickly overhauled in the prior art and influences the water consumption of people, and comprises a primary detection circuit, a secondary detection circuit and a comprehensive output circuit, wherein the primary detection circuit detects a current signal of the motor by using a current sensor, compares the current signal and transmits the current signal to the secondary detection circuit, and simultaneously starts the secondary detection circuit, the secondary detection circuit detects a temperature signal of a bearing by using a thermistor PTCR, calculates the temperature signal to obtain a difference signal, starts the comprehensive output circuit by using the difference signal, transmits the temperature signal and the current signal to the comprehensive output circuit, compares the temperature signal to obtain a fault signal of the water supply equipment, and the fault signal and the current signal of the water supply equipment are quickly transmitted to the monitoring center, so that the maintenance time is reduced.
Description
Technical Field
The invention relates to the field of equipment detection, in particular to a safety detection device for water supply equipment.
Background
With the improvement of living standard and production technology, people pursue the safety of water quality more and more, water supply equipment comes to bear and go on, in the real life, there are water supply equipment of many types and volumes, have greatly reduced people's worries about on water quality safety, but water supply equipment if break down will greatly influence people's water safety.
In the actual use process, there are many common faults of the water supply equipment, such as water shortage fault, idle opening fault, heat relay fault, frequency converter fault and the like, wherein the conditions for triggering the heat relay fault are various, one of the faults is caused by the sudden increase of the running current of the motor, the current increase of the motor can be caused by the sudden increase of the system voltage, or the bearing damage of the heat relay on the motor can be caused, the heat relay fault is generated at the time, the water supply equipment is in fault, and the water use of people is influenced.
The present invention therefore provides a new solution to this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a water supply equipment safety detection device, which effectively solves the problem that the water consumption of people is affected due to the fact that the prior art cannot rapidly overhaul the increased current of a water supply equipment motor.
The technical scheme includes that the safety detection device for the water supply equipment comprises a primary detection circuit, a secondary detection circuit and a comprehensive output circuit, wherein the primary detection circuit detects a current signal of a motor by using a current sensor, compares the current signal and transmits the current signal to the secondary detection circuit, and simultaneously starts the secondary detection circuit, the secondary detection circuit detects a temperature signal of a bearing by using a thermistor PTCR, calculates the temperature signal to obtain a difference signal, starts the comprehensive output circuit by using the difference signal, transmits the temperature signal and the current signal to the comprehensive output circuit, compares the temperature signal by using the comprehensive output circuit to obtain a fault signal of the water supply equipment, and rapidly transmits the fault signal and the current signal of the water supply equipment to a monitoring center.
Furthermore, the primary detection circuit comprises a current sensor U1, a VCC pin of the current sensor U1 is connected to a collector of a triode Q2, one end of a resistor R3, and one end of a switch S1 and is connected to a positive power supply VCC, an out pin of the current sensor U1 is connected to one end of a bidirectional voltage regulator D1 and one end of a resistor R1, the other end of a resistor R1 is connected to one end of a resistor R2 and a non-inverting end of an operational amplifier U2B, an inverting end of the operational amplifier U2B is connected to one end of a resistor R6, the other end of a resistor R6 is connected to one end of a resistor R4 and an emitter of a triode Q2, a base of a triode Q2 is connected to the other end of a resistor R2, the other end of a resistor R3 and one end of a capacitor C1, an output end of the operational amplifier U2B is connected to a positive pole of a diode D3, a negative pole of the diode D3 is connected to one end of a relay K3, and the other end of the relay K3 is connected to the other end of the relay C3, The other end of the resistor R4, the other end of the bidirectional voltage regulator tube D1 and the gnd pin of the current sensor U1 are connected in parallel and grounded.
Further, the secondary detection circuit comprises a resistor R5, one end of a resistor R5 is respectively connected with one end of a resistor R11, an emitter of a triode Q3, the other end of a switch S1 in the primary detection circuit is connected with a positive power supply VCC, the other end of a resistor R5 is respectively connected with one end of a resistor R7 and one end of a thermistor PTCR, the other end of a resistor R7 is respectively connected with one end of a resistor R8, one end of a resistor R14 and an inverting end of an operational amplifier U4B, the inverting end of an operational amplifier U4B is respectively connected with the other end of a resistor R8, one end of a resistor R9 and one end of a capacitor C2, the output end of the operational amplifier U4B is respectively connected with the other end of a resistor R9, the anode of a diode D6, the other end of a resistor R11 and the base of a triode Q3, the collector of a triode Q3 is respectively connected with one end of a resistor R12 and the anode of a diode D4, the cathode of a diode D6 is connected with one end of a bidirectional trigger tube D7, the other end of the bidirectional trigger diode D7 is connected with the control electrode of the thyristor Q5, the anode of the thyristor Q5 is respectively connected with the other end of the resistor R1 and one end of the resistor R2 in the primary detection circuit, the other end of the resistor R12 is respectively connected with the other end of the resistor R9, the other end of the capacitor C2, the other end of the thermistor PTCR and the other end of the relay K1 in the primary detection circuit in parallel connection and grounding.
Furthermore, the integrated output circuit includes a capacitor C3, one end of the capacitor C3 is connected to the control electrode of the thyristor Q4 and the negative electrode of the diode D4 in the secondary detection circuit, the anode of the thyristor Q4 is connected to the other end of the resistor R7 in the secondary detection circuit, the cathode of the thyristor Q4 is connected to one end of the resistor R10 and the non-inverting end of the operational amplifier U3B, the other end of the resistor R10 is connected to one end of the capacitor C4 and the inverting end of the operational amplifier U3B, the output end of the operational amplifier U3B is connected to the positive electrode of the diode D5, the negative electrode of the diode D5 is connected to the pin 7 of the and gate U5A, the pin 5 of the and gate U5A is connected to one end of the resistor R15, the other end of the resistor R15 is connected to the crack signal, the output end of the and gate U5 is connected to one end of the resistor R18, one end of the capacitor C5, the other end of the anode of the thyristor Q5 is connected to the cathode of the resistor R5 and the resistor R5 is connected to the other end of the resistor R36A, The base electrode of a triode Q1, the collector electrode of a triode Q1 and the other end of a resistor R16 are connected and connected with a positive power supply VCC, the emitter electrode of the triode Q1 is respectively connected with one end of a resistor R17 and the control electrode of a thyristor Q6, the cathode of the thyristor Q6 is connected with a monitoring center, and the other end of the resistor R17 is respectively connected with the other end of a capacitor C2 in a secondary detection circuit and the other end of a relay K1 in a primary detection circuit and connected with the ground in parallel.
The invention realizes the following beneficial effects:
whether the working current of the motor is increased or not is detected by setting the primary detection circuit, whether the working current of the motor is increased or not is judged by setting the secondary detection circuit and the comprehensive output circuit, when the bearing is detected to be damaged, a signal transmission monitoring center is damaged, the bearing needs to be replaced, otherwise, the water supply equipment fault can influence the water for residents, and when the working point current of the motor is increased or not caused by the damage of the bearing, the current signal of the motor is transmitted to the monitoring center, the working current of the motor of the water supply equipment for workers is reminded of having an abnormal increase phenomenon, attention needs to be paid, the reason that the motor cannot be quickly overhauled in the prior art is avoided, the problem that the water for people is influenced is caused, and the maintenance time is reduced.
Drawings
Fig. 1 is a schematic diagram of the primary detection circuit of the present invention.
FIG. 2 is a schematic diagram of a two-stage detection circuit and integrated output circuit of the present invention.
Detailed Description
The foregoing and other technical and functional aspects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying figures 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The safety detection device comprises a primary detection circuit, a secondary detection circuit and a comprehensive output circuit, wherein the primary detection circuit detects a current signal of a motor by using a current sensor, compares the current signal and transmits the current signal to the secondary detection circuit, and simultaneously opens the secondary detection circuit, the secondary detection circuit detects a temperature signal of a bearing by using a thermistor PTCR, calculates the temperature signal to obtain a difference signal, opens the comprehensive output circuit by using the difference signal, transmits the temperature signal and the current signal to the comprehensive output circuit, compares the temperature signal by using the comprehensive output circuit to obtain a fault signal of the water supply equipment, and rapidly transmits the fault signal and the current signal of the water supply equipment to a monitoring center.
The primary detection circuit comprises a current sensor U1, a VCC pin of the current sensor U1 is respectively connected with a collector of a triode Q2, one end of a resistor R3 and one end of a switch S1 are connected with a positive polarity power supply VCC, an out pin of the current sensor U1 is respectively connected with one end of a bidirectional voltage regulator D1 and one end of a resistor R1, the other end of the resistor R1 is respectively connected with one end of a resistor R2 and the same phase end of an operational amplifier U2B, the inverting end of the operational amplifier U2B is connected with one end of the resistor R6, the other end of the resistor R6 is respectively connected with one end of a resistor R4 and an emitter of a triode Q2, the base of the triode Q2 is respectively connected with the other end of the resistor R2, the other end of a resistor R3 and one end of a capacitor C1, the output end of the operational amplifier U2B is connected with the positive pole of a diode D3, the negative pole of a diode D3 is connected with one end of a relay K1, and the other end of the relay 1 is respectively connected with the other end of the relay C1, The other end of the resistor R4, the other end of the bidirectional voltage regulator tube D1 and the gnd pin of the current sensor U1 are connected in parallel and grounded;
the primary detection circuit detects a working current signal of a motor of the water supply equipment by using a current sensor U1, and transmits the current signal to the same-phase end of an operational amplifier U2B through a resistor R1, wherein the current sensor U1 adopts a Hall current sensor with the similar type of AHKC-EKBA, a bidirectional voltage-stabilizing tube D1 is used for avoiding the overlarge amplitude value of the current signal to cause the surge phenomenon of the safety detection device and damage the components of the safety detection device, the reverse-phase end of the operational amplifier U2B receives the current signal delayed by the resistor R2, the capacitor C1 and a triode Q2, namely the current signal is transmitted to the operational amplifier U2B in two paths, the operational amplifier U2B compares the current signal with the delayed current signal, when the operational amplifier U2B does not conduct the diode D3, the current of the motor of the water supply equipment is not increased, and the motor is not abnormal, and when the operational amplifier U2B turns on the diode D3, which indicates that the current of the water supply equipment motor is increased, the diode D3 turns on the relay K1, the switch S1 is closed, the secondary detection circuit is opened, and a current signal is transmitted to the secondary detection circuit.
The secondary detection circuit comprises a resistor R5, one end of the resistor R5 is respectively connected with one end of a resistor R11, an emitter of a triode Q3, the other end of a switch S1 in the primary detection circuit is connected with a positive power supply VCC, the other end of a resistor R5 is respectively connected with one end of a resistor R7 and one end of a thermistor PTCR, the other end of a resistor R7 is respectively connected with one end of a resistor R8, one end of a resistor R14 and an inverting end of an operational amplifier U4B, the inverting end of the operational amplifier U4B is respectively connected with the other end of a resistor R8, one end of a resistor R9 and one end of a capacitor C2, the output end of the operational amplifier U4B is respectively connected with the other end of a resistor R14, the anode of a diode D6, the other end of the resistor R11 and the base of a triode Q11, the collector of the triode Q11 is respectively connected with one end of the resistor R11 and the anode of the diode D11, the cathode of the diode D11 is connected with one end of a bidirectional trigger diode D11, and the control diode Q11, the anode of the thyristor Q5 is connected with the other end of the resistor R1 and one end of the resistor R2 in the primary detection circuit respectively, the other end of the resistor R12 is connected with the other end of the resistor R9, the other end of the capacitor C2, the other end of the thermistor PTCR and the other end of the relay K1 in the primary detection circuit respectively and connected with the ground;
when the secondary detection circuit is conducted by the primary detection circuit, the thermistor PTCR starts to detect a temperature signal of a bearing of a thermal relay on the motor, the resistor R7 transmits the temperature signal to the operational amplifier U4B in two paths, one path is directly transmitted to the inverting terminal of the operational amplifier U4B, the other path is transmitted to the inverting terminal of the operational amplifier U4B after being delayed by the resistor R8 and the capacitor C2, the operational amplifier U4B performs subtraction operation on the temperature signal and the delayed temperature signal to obtain a difference signal, namely the temperature change of the bearing, when the difference signal conducts the diode D6, the temperature on the bearing is not in an increased state, at the moment, the diode D6 conducts the thyristor Q5 through the bidirectional trigger diode D7, the thyristor Q5 transmits a current signal detected in the primary detection circuit to the comprehensive output circuit, and when the difference signal conducts the triode Q3, the temperature on the bearing is suddenly increased, at this time, the diode D4 is turned on by the transistor Q3, and the integrated output circuit is turned on.
The comprehensive output circuit comprises a capacitor C3, one end of the capacitor C3 is connected with a control electrode of a thyristor Q4 and a negative electrode of a diode D4 in the secondary detection circuit respectively, an anode of the thyristor Q4 is connected with the other end of a resistor R7 in the secondary detection circuit, a cathode of a thyristor Q4 is connected with one end of a resistor R10 and a same-phase end of an operational amplifier U3B respectively, the other end of the resistor R10 is connected with one end of a capacitor C4 and an opposite-phase end of the operational amplifier U3B respectively, an output end of the operational amplifier U3B is connected with an anode of a diode D5, a negative electrode of a diode D5 is connected with a pin 7 of an AND gate U5A, a pin 5 of the AND gate U5A is connected with one end of the resistor R15, the other end of the resistor R15 is connected with a crack signal, an output end of the AND gate U5A is connected with one end of a resistor R18, one end of the capacitor C5, and a cathode of a thyristor R5 in the anode of the secondary detection circuit of the thyristor Q5, and a cathode of the resistor R5 are connected with a resistor R5 respectively, The base electrode of a triode Q1, the collector electrode of a triode Q1 is connected with the other end of a resistor R16 and is connected with a positive power supply VCC, the emitter electrode of the triode Q1 is respectively connected with one end of a resistor R17 and the control electrode of a thyristor Q6, the cathode of the thyristor Q6 is connected with a monitoring center, the other end of the resistor R17 is respectively connected with the other end of a capacitor C2 in the secondary detection circuit and the other end of a relay K1 in the primary detection circuit and is connected with the ground in parallel;
when the comprehensive output circuit is conducted by a diode D4 in the secondary detection circuit, the diode D4 conducts the thyristor Q4 through a capacitor C3, the thyristor Q4 transmits the temperature signal to the operational amplifier U3B in two paths, one path is directly transmitted to the non-inverting terminal of the operational amplifier U3B, the other path is transmitted to the inverting terminal of the operational amplifier U3B after being delayed by a resistor R10 and a capacitor C4, the operational amplifier U3B compares the temperature signal with the delayed temperature signal, when the operational amplifier U3B conducts the diode D5, it indicates that the bearing is in a state that the temperature is always increased, the diode D5 outputs a high level to a 7 pin of the and gate U5A, a 5 pin of the and gate U5A receives a crack signal of the bearing transmitted by the resistor R15, that is a crack or breakage occurs due to improper use of the bearing, wherein the crack signal is obtained by the nondestructive detection technology, which is the prior art and is not repeated here, when crack signals and high levels exist at two pins of the AND gate U5A at the same time, the AND gate U5A outputs a water supply equipment fault signal, the water supply equipment fault signal quickly conducts the triode Q1 through the resistor R18 and the capacitor C5, the triode Q1 conducts the thyristor Q5, the thyristor Q5 transmits the water supply equipment fault signal to the monitoring center to remind workers of the monitoring center that the water supply equipment is damaged, the water supply equipment needs to be immediately repaired and maintained to avoid influencing the longer-time water consumption of people, and when the high levels and the crack signals do not exist at the same time at two pins of the AND gate U5A, the current signal of the primary detection circuit transmitted by the secondary detection circuit quickly conducts the triode Q1 through the resistor R18 and the capacitor C5, the triode Q1 transmits the current signal to the monitoring center through the thyristor Q6 to remind the workers of the abnormal increase of the working current of the motor of the water supply equipment, attention is required.
When the invention is used, the primary detection circuit detects the working current signal of the motor of the water supply equipment by using the current sensor U1, transmits the current signal to the non-inverting terminal of the operational amplifier U2B through the resistor R1, avoids the overlarge amplitude of the current signal by using the bidirectional voltage regulator tube D1, and causes the surge phenomenon of the safety detection device, the inverting terminal of the operational amplifier U2B receives the current signal delayed by the resistor R2, the capacitor C1 and the triode Q2, the operational amplifier U2B compares the current signal with the delayed current signal, when the operational amplifier U2B turns on the diode D3, the current of the water supply equipment motor is not increased, the abnormal phenomenon of the motor is not generated, and when the operational amplifier U2B turns on the diode D3, the current of the water supply equipment motor is increased, the diode D3 turns on the relay K1, and the switch S1 is closed, the secondary detection circuit is started, and simultaneously, a current signal is transmitted to the secondary detection circuit, when the secondary detection circuit is conducted by the primary detection circuit, the thermistor PTCR starts to detect a temperature signal of a bearing of a thermal relay on the motor, the temperature signal is transmitted to the operational amplifier U4B in two paths by the resistor R7, one path is directly transmitted to the inverting terminal of the operational amplifier U4B, the other path is transmitted to the non-inverting terminal of the operational amplifier U4B after being delayed by the resistor R8 and the capacitor C2, the operational amplifier U4B performs subtraction operation on the temperature signal and the delayed temperature signal to obtain a difference signal, when the difference signal conducts the diode D6, the diode D6 conducts the thyristor Q5 through the bidirectional trigger diode D7, the thyristor Q5 transmits the current signal detected in the primary detection circuit to the comprehensive output circuit, and when the difference signal conducts the triode Q3, the triode Q3 conducts the diode D4, when the comprehensive output circuit is conducted, the diode D4 conducts the thyristor Q4 through the capacitor C3, the thyristor Q4 transmits the temperature signal to the operational amplifier U3B in two paths, one path is directly transmitted to the non-inverting terminal of the operational amplifier U3B, the other path is transmitted to the inverting terminal of the operational amplifier U3B after being delayed by the resistor R10 and the capacitor C4, the operational amplifier U3B compares the temperature signal with the delayed temperature signal, when the operational amplifier U3B conducts the diode D5, the diode D5 outputs a high level to the 7 pin of the operational amplifier U5A, the crack signal of the bearing transmitted by the resistor R15 is received by the 5 pin of the AND gate U5A, when the crack signal and the high level exist at the two pins of the AND gate U5A, the AND gate U5A outputs a water supply equipment fault signal, the water supply equipment fault signal rapidly conducts the triode Q5 through the resistor R18 and the capacitor C5, and the thyristor Q5928 conducts the triode Q599, thyristor Q5 transmits water supply equipment fault signal to the surveillance center, remind the staff at surveillance center that water supply equipment has damaged, need repair and maintain water supply equipment immediately, avoid influencing people's water, and two pins when AND gate U5A do not have high level and crackle signal simultaneously, then the current signal of the primary detection circuit who comes with second grade detection circuit transmission this moment switches on triode Q1 through resistance R18 and electric capacity C5 fast, triode Q1 passes through thyristor Q6 with current signal transmission to the surveillance center, remind staff water supply equipment's motor's operating current to have unusual increase phenomenon, need notice.
The invention achieves the following effects:
(1) whether the working current of the motor is increased or not is detected by arranging a primary detection circuit, and whether the working current of the motor is increased or not is judged by arranging a secondary detection circuit and a comprehensive output circuit, when the bearing is detected to be damaged, a damage signal is transmitted to a monitoring center, the bearing needs to be replaced, otherwise, the water supply equipment fault can influence the water consumption of residents, and when the current increase of the working point of the motor is detected not caused by the damage of the bearing, the current signal of the motor is transmitted to the monitoring center, the working current of the motor of the water supply equipment is reminded to be abnormally increased by workers, attention needs to be paid, the problem that the current increase of the motor cannot be quickly overhauled in the prior art and the water consumption of people is influenced is avoided, and the maintenance time is reduced;
(2) whether the temperature of the bearing rises is detected by arranging the operational amplifier U4B in the secondary detection circuit, and the temperature of the bearing is detected to be in a state of increasing all the time in the comprehensive detection circuit, so that a fault signal of the water supply equipment is obtained, the accuracy of detecting whether the bearing is damaged by using the temperature signal is improved by using a crack signal, the accuracy of the safety detection device is ensured, the fault signal of the water supply equipment is quickly conducted with the thyristor Q6 by using the resistor R18, the capacitor C5 and the triode Q1, the accuracy of the early warning device is improved, and the speed of transmitting the fault signal of the water supply equipment to a monitoring center is also accelerated.
Claims (4)
1. The safety detection device for the water supply equipment is characterized by comprising a primary detection circuit, a secondary detection circuit and a comprehensive output circuit, wherein the primary detection circuit detects a current signal of a motor by using a current sensor, compares the current signal and transmits the current signal to the secondary detection circuit, and simultaneously starts the secondary detection circuit, the secondary detection circuit detects a temperature signal of a bearing by using a thermistor PTCR, calculates the temperature signal to obtain a difference signal, starts the comprehensive output circuit by using the difference signal, transmits the temperature signal and the current signal to the comprehensive output circuit, compares the temperature signal by using the comprehensive output circuit to obtain a fault signal of the water supply equipment, and quickly transmits the fault signal and the current signal of the water supply equipment to a monitoring center.
2. The safety detecting device of claim 1, wherein the primary detecting circuit comprises a current sensor U1, the VCC pin of the current sensor U1 is connected to the collector of a transistor Q2, one end of a resistor R3, one end of a switch S1 and connected to a positive power source VCC, the out pin of the current sensor U1 is connected to one end of a bidirectional voltage regulator D1 and one end of a resistor R1, the other end of the resistor R1 is connected to one end of a resistor R2 and the same phase end of an operational amplifier U2B, the inverting end of the operational amplifier U2B is connected to one end of the resistor R6, the other end of the resistor R6 is connected to one end of a resistor R4 and the emitter of a transistor Q2, the base of the transistor Q2 is connected to the other end of the resistor R2, the other end of a resistor R3 and one end of a capacitor C1, the output end of the operational amplifier U2B is connected to the positive pole of a diode D3, the negative pole of a diode D3 is connected to one end of a relay K1, the other end of the relay K1 is connected with the other end of the resistor C1, the other end of the resistor R4, the other end of the bidirectional voltage regulator tube D1 and the gnd pin of the current sensor U1 respectively and connected in parallel with the ground.
3. The safety detecting device of water supply equipment according to claim 1, wherein the secondary detecting circuit comprises a resistor R5, one end of the resistor R5 is connected with one end of a resistor R11, the emitter of a transistor Q3, the other end of a switch S1 in the primary detecting circuit is connected with a positive polarity power supply VCC, the other end of the resistor R5 is connected with one end of a resistor R7 and one end of a thermistor PTCR, the other end of the resistor R7 is connected with one end of a resistor R8, one end of a resistor R14 and the inverting end of an operational amplifier U4B, the inverting end of the operational amplifier U4B is connected with the other end of the resistor R8, one end of a resistor R9 and one end of a capacitor C2, the output end of the operational amplifier U4B is connected with the other end of a resistor R14, the anode of a diode D6, the other end of a resistor R11 and the base of a transistor Q3, the collector of the transistor Q3 is connected with one end of a resistor R12 and the anode of a diode D4, the cathode of the diode D6 is connected with one end of a bidirectional trigger tube D7, the other end of the bidirectional trigger diode D7 is connected with the control electrode of a thyristor Q5, the anode of the thyristor Q5 is respectively connected with the other end of a resistor R1 and one end of a resistor R2 in the primary detection circuit, and the other end of the resistor R12 is respectively connected with the other end of the resistor R9, the other end of a capacitor C2, the other end of a thermistor PTCR and the other end of a relay K1 in the primary detection circuit and connected with the ground in parallel.
4. The safety inspection device for water supply equipment according to claim 1, wherein the integrated output circuit comprises a capacitor C3, one end of the capacitor C3 is connected to the control electrode of the thyristor Q4 and the negative electrode of the diode D4 in the secondary inspection circuit, the anode of the thyristor Q4 is connected to the other end of the resistor R7 in the secondary inspection circuit, the cathode of the thyristor Q4 is connected to one end of the resistor R10 and the non-inverting terminal of the operational amplifier U3B, the other end of the resistor R10 is connected to one end of the capacitor C4 and the inverting terminal of the operational amplifier U3B, the output terminal of the operational amplifier U3B is connected to the positive electrode of the diode D5, the negative electrode of the diode D5 is connected to the 7 pin of the AND gate U5A, the 5 pin of the AND gate U5A is connected to one end of the resistor R15, the other end of the resistor R15 is connected to the crack signal, the output terminal of the AND gate U5 is connected to one end of the resistor R18, one end of the capacitor C56 and the cathode of the thyristor Q828653 in the secondary inspection circuit, the other end of the resistor R18 is respectively connected with one end of a resistor R16 and the base electrode of a triode Q1, the collector electrode of the triode Q1 is connected with the other end of a resistor R16 and is connected with a positive power supply VCC, the emitter electrode of the triode Q1 is respectively connected with one end of a resistor R17 and the control electrode of a thyristor Q6, the cathode of the thyristor Q6 is connected with a monitoring center, the other end of the resistor R17 is respectively connected with the other end of a capacitor C2 in the secondary detection circuit and the other end of a relay K1 in the primary detection circuit and is connected with the ground in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111154135.XA CN113820597A (en) | 2021-09-29 | 2021-09-29 | Water supply equipment safety inspection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111154135.XA CN113820597A (en) | 2021-09-29 | 2021-09-29 | Water supply equipment safety inspection device |
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| Publication Number | Publication Date |
|---|---|
| CN113820597A true CN113820597A (en) | 2021-12-21 |
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|---|---|---|---|
| CN202111154135.XA Withdrawn CN113820597A (en) | 2021-09-29 | 2021-09-29 | Water supply equipment safety inspection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243929A (en) * | 2021-12-29 | 2022-03-25 | 广州市万保职业安全事务有限公司 | Electric appliance management circuit for gas station safety |
| CN114400625A (en) * | 2022-02-28 | 2022-04-26 | 滨州市通联电器有限公司 | Detection and linkage control device of distribution box |
-
2021
- 2021-09-29 CN CN202111154135.XA patent/CN113820597A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114243929A (en) * | 2021-12-29 | 2022-03-25 | 广州市万保职业安全事务有限公司 | Electric appliance management circuit for gas station safety |
| CN114243929B (en) * | 2021-12-29 | 2023-11-03 | 重庆磊博石化有限公司 | Electrical appliance management circuit for gas station safety |
| CN114400625A (en) * | 2022-02-28 | 2022-04-26 | 滨州市通联电器有限公司 | Detection and linkage control device of distribution box |
| CN114400625B (en) * | 2022-02-28 | 2023-09-22 | 滨州市通联电器有限公司 | Detection and linkage control device of distribution box |
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Application publication date: 20211221 |