CN107884146B - Equipment medium leakage detection device - Google Patents
Equipment medium leakage detection device Download PDFInfo
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- CN107884146B CN107884146B CN201610874036.1A CN201610874036A CN107884146B CN 107884146 B CN107884146 B CN 107884146B CN 201610874036 A CN201610874036 A CN 201610874036A CN 107884146 B CN107884146 B CN 107884146B
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- 238000001514 detection method Methods 0.000 title claims abstract description 22
- 238000009413 insulation Methods 0.000 claims abstract description 11
- 239000003990 capacitor Substances 0.000 claims description 42
- 239000000523 sample Substances 0.000 claims description 10
- 238000009966 trimming Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005259 measurement Methods 0.000 abstract description 4
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 208000032750 Device leakage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/40—Investigating fluid-tightness of structures by using electric means, e.g. by observing electric discharges
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Abstract
The invention belongs to the technical field of measurement, and particularly relates to a device for detecting medium leakage of equipment. The device comprises a power supply module, an inverting input end module, a non-inverting input end module, a voltage comparison module, an alarm output module, a differential mode interference resistance module and a hysteresis module. The device interface can be directly used for detecting medium leakage in a motor of a unit, the performance of the device is superior to that of the original device, the resistance value of the switch action is adjustable, and the device interface can be widely applied to equipment leakage detection with different insulation resistance thresholds.
Description
Technical Field
The invention belongs to the technical field of measurement, and particularly relates to a device for detecting medium leakage of equipment.
Background
The leakage detection device consists of a detection probe (two electrodes) and a secondary instrument. The detection probe is a metal part, and the probability of aging and failure is extremely low; the secondary instrument is a modularized component consisting of electronic components, aging failure gradually increases along with time, the current detection device reaches the service life (80000 hours), the original country of the device is stopped, and the replacement products meeting the technical parameter requirements and having the same interfaces are difficult to find in the domestic and foreign markets.
Disclosure of Invention
The invention aims to solve the technical problem of providing a device medium leakage detection device, wherein a device interface can be directly used for medium leakage detection, a switch action resistance value can be adjusted, and the device medium leakage detection device can be widely applied to device leakage detection with different insulation resistance thresholds.
In order to solve the technical problems, the device for detecting the medium leakage of the equipment comprises a power supply module, an inverting input end module, a non-inverting input end module, a voltage comparison module, an alarm output module, a differential mode interference resisting module and a hysteresis module, wherein a power supply port is led out of the power supply module to supply power to each module, and a first leading-out port is connected with a first port of a second module; the power end of the inverting input end module is connected with the power supply port of the power supply module, and the first port of the inverting input end module is connected with the first port of the voltage comparison module and the first port of the differential mode interference resistant module; the power end of the voltage comparison module is connected with the power supply port of the power supply module, and the first port of the voltage comparison module is connected with the first port of the anti-differential mode interference module and the first port of the inverting input end module; the second port of the voltage comparison module is connected with the second port of the differential mode interference resisting module and the first port of the in-phase input end module; the third port of the voltage comparison module is connected with the second port of the hysteresis module and the first port of the alarm output module; the power end of the in-phase input end module is connected with the power supply port of the power supply module; the first port of the in-phase input end module is connected with the second port of the voltage comparison module and the second port of the differential mode interference resistant module; a first port of a second port hysteresis module of the in-phase input end module; the power end of the alarm output module is connected with the power supply port of the power supply module, and the first port of the alarm output module is connected with the third port of the voltage comparison module and the second port of the hysteresis module.
The power supply module comprises an X2 terminal strip, wherein a first interface of the X2 terminal strip is led out to be a power supply end and is connected with a power supply end of the power supply module; the second interface of the X2 terminal block is led out to be a second port of the inverting input end module through a resistor R1 and a resistor R4; the third interface of the X2 terminal block is led out to be a power supply end through a resistor R2 and a resistor R3 and is connected with a power supply end of the power supply module; the wires of the resistor R1 and the resistor R4 are connected with the wires of the resistor R2 and the resistor R3 through wires; the fourth interface of the X2 terminal block is grounded through a resistor R5, a resistor R6 and a resistor R7; the fourth interface of the X2 terminal block is led out through a resistor R5 to be a first port of the inverting input end module; the leads of the resistor R6 and the resistor R7 are led out to be the second port of the inverting input terminal module.
The power end of the in-phase input end module is led out to be a second port of the in-phase input end module through a resistor R8, a resistor R9, a fine adjustment module 14; the power end of the in-phase input end module is led out through a resistor R8 to form a first port of the in-phase input end module; the power end of the in-phase input end module is grounded through a resistor R8, a resistor R9, a trimming module and a resistor R10.
The reverse input end of a voltage comparator DA1 of the voltage comparison module is led out to be a first port of the voltage comparison module through a resistor R12; the homodromous input end of the voltage comparator DA1 is led out to be a second port of the voltage comparison module through a resistor R11; the power end of the voltage comparator DA1 is grounded through a capacitor C5, and the power end of the voltage comparator DA1 is led out through a resistor R14 to be the power end of the voltage comparison module; the ground of the voltage comparator DA1 is grounded; the output end of the voltage comparator DA1 is led out as a third port of the voltage comparison module.
The anti-differential mode interference module is a capacitor C4, one end of the capacitor C4 is led out to be a first port of the anti-differential mode interference module, and the other end is led out to be a second port of the anti-differential mode interference module.
The hysteresis module is a resistor R13, one end of the resistor R13 is led out to be a first port of the hysteresis module, and the other end is led out to be a second port of the hysteresis module.
The fifth interface and the sixth interface of the X2 terminal block of the alarm output module are respectively led out of a connecting switch, and the switch is controlled to be opened and closed by a relay K1; the upper end of the relay K1 is led out as a power end, and the power end is connected to the lower end of the relay K1 through a reverse connection diode VD 5; the lower end of the relay K1 is connected with the C end of the triode VT 1; the end B of the triode VT1 is led out through a resistor R15 to be a first port of an alarm output module; the end B of the triode VT1 is grounded through an electrolytic capacitor C6; the B end of the triode VT1 is grounded through a resistor R16; the E terminal of the triode VT1 is grounded.
The power supply module comprises a full-wave rectifying module, an RC filtering module, a ripple module I and a ripple module II, wherein the full-wave rectifying module is respectively connected with the RC filtering module, the ripple module I and the first port of the ripple module II to be led out as a power supply end; the first port of the RC filter module is grounded through the capacitors C2 and C1 in sequence, and the first port of the power supply module is led out between the capacitors C2 and C1; the full-wave rectification module is provided with two outgoing lines connected with the X1 terminal block, wherein a first outgoing line is led out to be a power supply end through a diode VD2 and a circuit breaker F1, and the first outgoing line is grounded through a reverse connection diode VD 4; the second outgoing line is led out to be a power supply end through a diode VD1 and a circuit breaker F1, and is grounded through a reverse connection diode VD 3; the first port of the RC filter module is connected with the power supply end, is grounded through the capacitors C2 and C1, and is led out from the capacitor C2 to the capacitor C1 to serve as the first port of the power supply module; the first port of the ripple module I is grounded through a capacitor C8, grounded through a capacitor C7 and grounded through an electrolytic capacitor C3; the first port of the ripple module II is grounded through a capacitor C9.
The beneficial technical effects of the invention are as follows: the device interface can be directly used for detecting medium leakage in a motor of a unit, the performance of the device is superior to that of the original device, the resistance value of the switch action is adjustable, and the device interface can be widely applied to equipment leakage detection with different insulation resistance thresholds.
Drawings
FIG. 1 is a schematic diagram of an apparatus for detecting a medium leakage of a device;
FIG. 2 is a schematic diagram of an apparatus for detecting a medium leakage.
In the figure: : 1-a power supply module; 2-an inverting input module; 3-in-phase input end module; a 4-voltage comparison module; 5-an alarm output module; 6-a differential mode interference resistant module; 7-hysteresis module; 8-a full-wave rectification module; a 9-RC filter module; 10-ripple module I; 11-ripple module II; 12-detecting a probe; 13-a range setting module; 14-a fine tuning module; 12-detecting a probe; 15-X1 terminal block; a 16-X2 terminal block; 17-an adjustable resistor; 18-range setting switch.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
The invention relates to a device for detecting medium leakage of equipment, which comprises a power supply module 1, an inverting input end module 2, an in-phase input end module 3, a voltage comparison module 4, an alarm output module 5, a differential mode interference resisting module 6 and a hysteresis module 7, wherein a power supply port led out of the power supply module 1 supplies power to each module, and a first led-out port is connected with a first port of a second module; the power end of the inverting input end module 2 is connected with the power supply port of the power supply module 1, and the first port of the inverting input end module 2 is connected with the first port of the voltage comparison module 4 and the first port of the differential mode interference resisting module 6; the power end of the voltage comparison module 4 is connected with the power supply port of the power supply module 1, and the first port of the voltage comparison module 4 is connected with the first port of the anti-differential mode interference module 6 and the first port of the inverting input end module 2; the second port of the voltage comparison module 4 is connected with the second port of the differential mode interference resisting module 6 and the first port of the in-phase input end module 3; the third port of the voltage comparison module 4 is connected with the second port of the hysteresis module 7 and the first port of the alarm output module 5; the power end of the in-phase input end module 3 is connected with the power supply port of the power supply module 1; the first port of the in-phase input end module 3 is connected with the second port of the voltage comparison module 4 and the second port of the differential mode interference resisting module 6; a first port of a second port hysteresis module 7 of the in-phase input end module 3; the power end of the alarm output module 5 is connected with the power supply port of the power supply module 1, and the first port of the alarm output module 5 is connected with the third port of the voltage comparison module 4 and the second port of the hysteresis module 7.
The power supply module 1 comprises a full-wave rectifying module 8, an RC filter module 9, a ripple module I10 and a ripple module II11, wherein the full-wave rectifying module 8 is respectively connected with the RC filter module 9, the ripple module I10 and the first port of the ripple module II11 to be led out as a power supply end; the first port of the RC filter module 9 is grounded through the capacitors C2 and C1 in sequence, and the first port of the power supply module 1 is led out between the capacitors C2 and C1. The full-wave rectifying module 8 is provided with two outgoing lines connected with the X1 terminal block 15 and used for connecting 220V alternating current power supply, wherein a first outgoing line is led out to be a power supply end through a diode VD2 and a circuit breaker F1, and the first outgoing line is grounded through a reverse connection diode VD 4; the second outgoing line is led out to be a power supply end through the diode VD1 and the breaker F1, and is grounded through the reverse connection diode VD 3. The first port of the RC filter module 9 is connected with a power supply end, the first port is grounded through capacitors C2 and C1, and the first port is led out from the capacitor C2 to the capacitor C1 to serve as the first port of the power supply module 1. The first port of the ripple module I10 is grounded through a capacitor C8, and grounded through a capacitor C7, and grounded through an electrolytic capacitor C3. The first port of the ripple module II11 is grounded through the capacitor C9.
The alternating current 220V is reduced by a transformer, and the full-wave rectification module 8 outputs direct current 27V to supply power for the whole instrument. The three-level filtering is respectively an RC filtering module 9, a ripple module 10 and a ripple module 11, so that the direct current power supply is stable.
The power supply module 1 is connected with the inverting input terminal module 2, and an RC filter circuit is formed by using a resistor in the inverting input terminal module 2 and the RC filter module 9.
The inverting input terminal module 2 comprises an X2 terminal strip 16, and a first interface of the X2 terminal strip 16 is led out to be a power supply terminal and is connected with a power supply terminal of the power supply module 1; the second interface of the X2 terminal block 16 is led out to be a second port of the inverting input terminal module 2 through a resistor R1 and a resistor R4; the third interface of the X2 terminal strip 16 is led out to be a power supply end through a resistor R2 and a resistor R3 and is connected with a power supply end of the power supply module 1; the wires of the resistor R1 and the resistor R4 are connected with the wires of the resistor R2 and the resistor R3 through wires; the fourth interface of the X2 terminal block 16 is grounded through a resistor R5, a resistor R6 and a resistor R7; the fourth interface of the X2 terminal block 16 is led out through a resistor R5 to be a first port of the inverting input terminal module 2; the leads of the resistor R6 and the resistor R7 are led out as a second port of the inverting input terminal module 2. The detection probes 12 are connected to the fourth interface and the seventh interface in the X2, and when the insulation resistance between the detection probes 12 is reduced to a preset resistance value, an alarm is output through the alarm output module 5. The range setting module 13 realizes range setting through short-circuiting the first interface with the second interface and the third interface of pins in the X2 terminal strip 16.
The inverting input terminal module 2 is connected with the inverting input terminal of the voltage comparison module 4.
The power end of the in-phase input end module 3 is led out to be a second port of the in-phase input end module 3 through a resistor R8, a resistor R9, a fine tuning module 14; the power end of the in-phase input end module 3 is led out through a resistor R8 to be a first port of the in-phase input end module 3; the power supply end of the non-inverting input end module 3 is grounded through a resistor R8, a resistor R9, a trimming module 14 and a resistor R10. The voltage threshold at the in-phase end is determined while trimming of the range is achieved by trimming module 14. Trimming module 14 is an adjustable resistor W1.
The reverse input end of the voltage comparator DA1 of the voltage comparison module 4 is led out to be a first port of the voltage comparison module 4 through a resistor R12; the homodromous input end of the voltage comparator DA1 is led out to be a second port of the voltage comparison module 4 through a resistor R11; the power end of the voltage comparator DA1 is grounded through a capacitor C5, and the power end of the voltage comparator DA1 is led out through a resistor R14 to be the power end of the voltage comparison module 4; the ground of the voltage comparator DA1 is grounded; the output end of the voltage comparator DA1 is led out as a third port of the voltage comparison module 4. The voltage comparison module 4 compares the resistance between the inverting input terminal module 2 and the non-inverting input terminal module 3, outputs a high level when the non-inverting input terminal voltage is greater than the inverting input terminal voltage, and outputs an alarm through the alarm output module 5. The voltage comparison module 4 is connected with the inverting input end module 2, the non-inverting input end module 3 and the alarm output module 5.
The anti-differential mode interference module 6 is a capacitor C4, one end of the capacitor C4 is led out to be a first port of the anti-differential mode interference module 6, and the other end is led out to be a second port of the anti-differential mode interference module 6. The anti-differential mode interference module 6 is connected with the inverting input end module 2, the non-inverting input end module 3 and the voltage comparison module 4, and capacitors are connected in parallel at the non-inverting end and the inverting end to eliminate interference through filtering.
The hysteresis module 7 is a resistor R13, one end of the resistor R13 is led out to be a first port of the hysteresis module 7, and the other end is led out to be a second port of the hysteresis module 7. The hysteresis module 7 is connected with the in-phase input end module 3, the voltage comparison module 4 and the alarm output module 5, and a feedback resistor is connected in series with the output end of the comparator to form a hysteresis loop, so that signal interference or output alarm jump caused by small change of input voltage near a comparison threshold value is prevented.
The fifth interface and the sixth interface of the X2 terminal block 16 of the alarm output module 5 are respectively led out of a connecting switch, and the switch is controlled to be opened and closed through a relay K1. The upper end of the relay K1 is led out as a power end, and the power end is connected to the lower end of the relay K1 through a reverse connection diode VD 5; the lower end of the relay K1 is connected with the C end of the triode VT 1; the end B of the triode VT1 is led out through a resistor R15 to be a first port of the alarm output module 5; the end B of the triode VT1 is grounded through an electrolytic capacitor C6; the B end of the triode VT1 is grounded through a resistor R16; the E terminal of the triode VT1 is grounded. The alarm output module 5 receives the high-level output alarm sent by the voltage comparison module 4 and transmits the high-level output alarm to an automatic control system receiving the alarm through a fifth interface and a sixth interface in the X2 terminal row 16.
The apparatus medium leakage detection device will be briefly described with reference to fig. 2 as follows:
Detection probe 12: is installed in the equipment needing medium leakage detection and is connected to the fourth interface and the seventh interface of the X2 terminal.
X1 terminal block 15: the first interface and the second interface are connected with 220V AC to supply power for the secondary instrument.
The fourth interface and the seventh interface of the X2 terminal block 16 are connected with the detection probe 12, and the fifth interface and the sixth interface output an alarm of the relay. When the relay is opened, the relay is more than 20MΩ and when the relay is closed, the relay is less than 10 Ω
Adjustable resistor 17: the method is used for adjusting the electric potential of the same-phase end of the operational amplifier, namely comparing a threshold value; the insulation resistance value can be adjusted according to the insulation resistance threshold value of different equipment, and the insulation resistance value measuring method is suitable for measurement of insulation resistances of different equipment. I.e. fine tuning of the range of measurement is achieved. The adjustable resistor 17 in fig. 2 corresponds to the adjustable resistor W1 in the trimming module 14 in fig. 1, and the resistance value of the W1 resistor is changed by knob rotation.
Range setting switch 18: and the two switches S1 and S2 realize four measuring range adjustment.
The range setting switch 18 in fig. 2 corresponds to the range setting module 13 in fig. 1, the relation between the first port and the second port of the X2 terminal row 16 in the range setting module 13 corresponds to S1 of the range setting switch 18, the relation between the first port and the third port of the X2 terminal row 16 corresponds to S2 of the range setting switch 18, the short-circuit S1 between the first port and the second port of the X2 terminal row 16 is 1, the reverse positive is 0, and the short-circuit S2 between the first port and the third port of the X2 terminal row 16 is 1, and the reverse is 0. The specific table is as follows:
| Sequence number | S1 | S2 | Action resistance value |
| 1 | 0 | 0 | (5250～6550)kΩ |
| 2 | 1 | 0 | (1800～2200)kΩ |
| 3 | 0 | 1 | (290～430)kΩ |
| 4 | 1 | 1 | (110～210)kΩ |
The parameters of each electronic component are as follows:
Electrodeless capacitance: c1 (0.1. Mu.F), C2 (0.1. Mu.F), C4 (0.68. Mu.F), C5 (0.68. Mu.F), C7 (0.68. Mu.F), C8 (0.68. Mu.F), C9 (0.68. Mu.F);
Electrolytic capacitor: c3 (2200. Mu.F), C6 (100. Mu.F);
Resistor ：R1(187kΩ)、R2(54.2kΩ)、R3(20kΩ)、R4(78.8kΩ)、R5(511kΩ)、R6(511kΩ)、R7(100kΩ)、R8(100kΩ)、R9(95.3kΩ)、R10(1.2kΩ)、R11(51kΩ)、R12(51kΩ)、R13(3M)、R14(240)、R15(10kΩ)、R16(1.5kΩ);
Adjustable resistance: w1 (10kΩ);
A circuit breaker: f1 (rated current 0.5A);
Diode: the model numbers of VD1, VD2, VD3, VD4 and VD5 are all IN4007;
And (3) a tertiary tube: VT1 model BC337;
a transformer: x1 (primary AC187-242 secondary 27V DC);
a voltage comparator: the DA1 model is 140y d 17;
a relay: the model K1 is DS2Y-S-DC 24V.
When the circuit works, a precise operational amplifier is adopted to form a comparator, when the insulation resistance of equipment connected with the fourth interface and the seventh interface of the X2 terminal row 16 is reduced, the voltage of a signal input end is reduced, the voltage of an inverting end of the comparator is reduced, when the voltage of an inverting end of the comparator is lower than that of an inverting end of the comparator, the sixth interface of the comparator outputs a high level, a triode is conducted, a relay is closed, and an alarm signal is output; on the contrary, when the insulation resistance is increased, the voltage of the signal input end is increased, the voltage of the inverting end of the comparator is increased, when the voltage of the inverting end of the comparator is larger than the voltage of the non-inverting end, the sixth interface of the comparator outputs a low level, the triode is cut off, and the relay is disconnected.
Claims (6)
1. A device media leak detection apparatus, characterized by: the device comprises a power supply module (1), an inverting input end module (2), a non-inverting input end module (3), a voltage comparison module (4), an alarm output module (5), a differential mode interference resistant module (6) and a hysteresis module (7), wherein a power supply port led out of the power supply module (1) supplies power to each module, and a first led-out port is connected with a first port of a second module; the power end of the inverting input end module (2) is connected with the power supply port of the power supply module (1), and the first port of the inverting input end module (2) is connected with the first port of the voltage comparison module (4) and the first port of the differential mode interference resistant module (6); the power end of the voltage comparison module (4) is connected with the power supply port of the power supply module (1), and the first port of the voltage comparison module (4) is connected with the first port of the differential mode interference resistant module (6) and the first port of the inverting input end module (2); the second port of the voltage comparison module (4) is connected with the second port of the differential mode interference resistant module (6) and the first port of the in-phase input end module (3); the third port of the voltage comparison module (4) is connected with the second port of the hysteresis module (7) and the first port of the alarm output module (5); the power end of the in-phase input end module (3) is connected with the power supply port of the power supply module (1); the first port of the in-phase input end module (3) is connected with the second port of the voltage comparison module (4) and the second port of the differential mode interference resistant module (6); a first port of a second port hysteresis module (7) of the in-phase input end module (3); the power end of the alarm output module (5) is connected with the power supply port of the power supply module (1), and the first port of the alarm output module (5) is connected with the third port of the voltage comparison module (4) and the second port of the hysteresis module (7);
The inverting input end module (2) comprises an X2 terminal row (16), and a first interface of the X2 terminal row (16) is led out to be a power end and is connected with a power supply end of the power supply module (1); the second interface of the X2 terminal block (16) is led out to be a second port of the reverse phase input end module (2) through a resistor R1 and a resistor R4; the third interface of the X2 terminal strip (16) is led out to be a power supply end through a resistor R2 and a resistor R3 and is connected with a power supply end of the power supply module (1); the wires of the resistor R1 and the resistor R4 are connected with the wires of the resistor R2 and the resistor R3 through wires; the fourth interface of the X2 terminal block (16) is grounded through a resistor R5, a resistor R6 and a resistor R7; the fourth interface of the X2 terminal block (16) is led out to be a first interface of the reverse phase input end module (2) through a resistor R5; the leads of the resistor R6 and the resistor R7 are led out to be a second port of the inverting input end module (2); the detection probes (12) are connected to a fourth interface and a seventh interface in the X2, and when the insulation resistance between the detection probes (12) is reduced to a preset resistance value, an alarm is output through the alarm output module (5);
The power end of the in-phase input end module (3) is led out to be a second port of the in-phase input end module (3) through a resistor R8, a resistor R9, a fine adjustment module (14); the power end of the in-phase input end module (3) is led out through a resistor R8 to be a first port of the in-phase input end module (3); the power supply end of the non-inverting input end module (3) is grounded through a resistor R8, a resistor R9, a fine tuning module (14) and a resistor R10; the voltage threshold of the in-phase end is determined, and meanwhile, the trimming module (14) is used for trimming the range.
2. The apparatus medium leakage detecting device according to claim 1, wherein: the reverse input end of the voltage comparator DA1 of the voltage comparison module (4) is led out to be a first port of the voltage comparison module (4) through a resistor R12; the homodromous input end of the voltage comparator DA1 is led out to be a second port of the voltage comparison module (4) through a resistor R11; the power end of the voltage comparator DA1 is grounded through a capacitor C5, and the power end of the voltage comparator DA1 is led out through a resistor R14 to be the power end of the voltage comparison module (4); the ground of the voltage comparator DA1 is grounded; the output end of the voltage comparator DA1 is led out to be a third port of the voltage comparison module (4).
3. The apparatus medium leakage detecting device according to claim 2, wherein: the anti-differential mode interference module (6) is a capacitor C4, one end of the capacitor C4 is led out to be a first port of the anti-differential mode interference module (6), and the other end is led out to be a second port of the anti-differential mode interference module (6).
4. A device media leakage detection apparatus according to claim 3, wherein: the hysteresis module (7) is a resistor R13, one end of the resistor R13 is led out to be a first port of the hysteresis module (7), and the other end is led out to be a second port of the hysteresis module (7).
5. The apparatus medium leakage detecting device according to claim 4, wherein: the fifth interface and the sixth interface of the X2 terminal strip (16) of the alarm output module (5) are respectively led out of a connecting switch, and the switch is controlled to be opened and closed by a relay K1; the upper end of the relay K1 is led out as a power end, and the power end is connected to the lower end of the relay K1 through a reverse connection diode VD 5; the lower end of the relay K1 is connected with the C end of the triode VT 1; the end B of the triode VT1 is led out through a resistor R15 to be a first port of an alarm output module (5); the end B of the triode VT1 is grounded through an electrolytic capacitor C6; the B end of the triode VT1 is grounded through a resistor R16; the E terminal of the triode VT1 is grounded.
6. The apparatus medium leakage detecting device according to claim 5, wherein: the power supply module (1) comprises a full-wave rectifying module (8), an RC filtering module (9), a ripple module I (10) and a ripple module II (11), wherein the full-wave rectifying module (8) is respectively connected with the RC filtering module (9), the ripple module I (10) and a first port of the ripple module II (11) to be led out as a power supply end; the first port of the RC filter module (9) is grounded through the capacitors C2 and C1 in sequence, and the first port of the power supply module (1) is led out between the capacitors C2 and C1; the full-wave rectifying module (8) is provided with two outgoing lines which are connected with the X1 terminal block (15), wherein a first outgoing line is led out to be a power supply end through a diode VD2 and a circuit breaker F1, and the first outgoing line is grounded through a reverse connection diode VD 4; the second outgoing line is led out to be a power supply end through a diode VD1 and a circuit breaker F1, and is grounded through a reverse connection diode VD 3; the first port of the RC filter module (9) is connected with a power supply end, the first port is grounded through a capacitor C2 and a capacitor C1, and the first port of the power supply module (1) is led out between the capacitor C2 and the capacitor C1; the first port of the ripple module I (10) is grounded through a capacitor C8, grounded through a capacitor C7 and grounded through an electrolytic capacitor C3; the first port of the ripple module II (11) is grounded through a capacitor C9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874036.1A CN107884146B (en) | 2016-09-30 | 2016-09-30 | Equipment medium leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610874036.1A CN107884146B (en) | 2016-09-30 | 2016-09-30 | Equipment medium leakage detection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107884146A CN107884146A (en) | 2018-04-06 |
| CN107884146B true CN107884146B (en) | 2024-05-14 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04301732A (en) * | 1991-03-29 | 1992-10-26 | Tatsuta Electric Wire & Cable Co Ltd | Leakage detection device |
| CN2120284U (en) * | 1992-01-31 | 1992-10-28 | 谢昌源 | High reliable and precision gas leak protector |
| JPH09113398A (en) * | 1995-10-17 | 1997-05-02 | Tatsuta Electric Wire & Cable Co Ltd | Liquid leakage detector |
| CN2273418Y (en) * | 1996-10-18 | 1998-01-28 | 孟奇伟 | Multifunction portable gas leakage testing & detecting instrument |
| CN2560934Y (en) * | 2002-08-02 | 2003-07-16 | 沈阳 | Oxygen-leakage detecting instrument |
| CN2927135Y (en) * | 2006-01-12 | 2007-07-25 | 美的集团有限公司 | Microwave leakage protection monitoring device |
| CN204115989U (en) * | 2014-10-16 | 2015-01-21 | 宁波市鄞州骏捷气动工具厂 | Multistation leak detector testing circuit |
| CN206531622U (en) * | 2016-09-30 | 2017-09-29 | 江苏核电有限公司 | A kind of equipment medium leak detecting device |
-
2016
- 2016-09-30 CN CN201610874036.1A patent/CN107884146B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04301732A (en) * | 1991-03-29 | 1992-10-26 | Tatsuta Electric Wire & Cable Co Ltd | Leakage detection device |
| CN2120284U (en) * | 1992-01-31 | 1992-10-28 | 谢昌源 | High reliable and precision gas leak protector |
| JPH09113398A (en) * | 1995-10-17 | 1997-05-02 | Tatsuta Electric Wire & Cable Co Ltd | Liquid leakage detector |
| CN2273418Y (en) * | 1996-10-18 | 1998-01-28 | 孟奇伟 | Multifunction portable gas leakage testing & detecting instrument |
| CN2560934Y (en) * | 2002-08-02 | 2003-07-16 | 沈阳 | Oxygen-leakage detecting instrument |
| CN2927135Y (en) * | 2006-01-12 | 2007-07-25 | 美的集团有限公司 | Microwave leakage protection monitoring device |
| CN204115989U (en) * | 2014-10-16 | 2015-01-21 | 宁波市鄞州骏捷气动工具厂 | Multistation leak detector testing circuit |
| CN206531622U (en) * | 2016-09-30 | 2017-09-29 | 江苏核电有限公司 | A kind of equipment medium leak detecting device |
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| CN107884146A (en) | 2018-04-06 |
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