CN207817013U - A kind of electric energy metering wiring box with fault alarm function - Google Patents
A kind of electric energy metering wiring box with fault alarm function Download PDFInfo
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- CN207817013U CN207817013U CN201820089283.5U CN201820089283U CN207817013U CN 207817013 U CN207817013 U CN 207817013U CN 201820089283 U CN201820089283 U CN 201820089283U CN 207817013 U CN207817013 U CN 207817013U
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Abstract
A kind of electric energy metering wiring box with fault alarm function of the utility model is related to electric energy metering wiring box, especially a kind of electric energy metering wiring box assembly with temperature over-range warning function and breaking alarming function, it can intuitively reflect whether circuit is in normal working condition, be detected for the overheat of circuit in electric energy metering wiring box and open circuit.With box body, it is characterised in that：It is equipped with detection warning circuit plate in tray interior, electric current binding post and voltage link column is equipped in inboard wall of cartridge, is connected using metal deflector between electric current binding post and voltage link column；The box body has protecgulum, and wiring hole is equipped on protecgulum, and the wiring hole is corresponding with the position of electric current binding post and voltage link column, and electric current binding post and voltage link column pass through wiring hole to expose box body, so that the later stage uses wiring；It is equipped with temperature over-range warning circuit and breaking alarming circuit on detection warning circuit plate.
Description
Technical field
A kind of electric energy metering wiring box with fault alarm function of the utility model is related to electric energy metering wiring box, especially
It is a kind of electric energy metering wiring box assembly with temperature over-range warning function and breaking alarming function, can intuitively reflects
Go out whether circuit is in normal working condition, is detected for the overheat of circuit in electric energy metering wiring box and open circuit.
Background technology
Electric energy metering wiring box is that function is simpler used at present, adopts the connection side for being screwed water conservancy diversion sheet metal
Formula does not have the function of detection and alarm, once because electric energy metering wiring box water conservancy diversion sheet metal causes contact electricity due to virtual connection
Resistive is big or since contact surface surface oxidation causes conducting resistance to become larger or even other unexpected open circuit conditions, can all cause to count
Amount is inaccurate, meanwhile, water conservancy diversion sheet metal temperature increases under the action of electric current, and temperature rises that phenomenon is serious so that circuit is burnt,
Lead to major accident.If water conservancy diversion sheet metal is extremely breaking, the means of above-mentioned temperature detection will fail, and therefore, this practicality is new
For type on the basis of temperature detection alarm circuit, additional open circuit detection makes up the deficiency of temperature sensing circuit with warning circuit.
For the problems of traditional electric energy metering wiring box, there is presently no effective solution measures, can only go out
Investigation is gone to solve after existing accident, this is very passive for electrical energy measurement unit, therefore, forwardly needs a kind of Forewarning Measures,
It gives warning in advance to problems, user and electrical energy measurement unit is reminded to take timely measure.
Utility model content
The purpose of this utility model is that place provides a kind of electrical energy measurement with fault alarm function against the above deficiency
Terminal box is a kind of intuitive, low cost electric energy metering wiring box with detection and alarm function, can find to generate heat in time
Serious circuit or the circuit that there is open circuit, avoid metering loss, exclude security risk in advance.
The utility model takes following technical scheme to realize：
A kind of electric energy metering wiring box with fault alarm function is equipped with detection alarm electricity with box body, in tray interior
Road plate is equipped with electric current binding post and voltage link column in inboard wall of cartridge, metal is used between electric current binding post and voltage link column
Flow deflector is connected；The box body has protecgulum, and wiring hole is equipped on protecgulum, and the wiring hole connects with electric current binding post and voltage
The position of terminal is corresponding, and electric current binding post and voltage link column pass through wiring hole to expose box body, so that the later stage uses wiring；
It is equipped with temperature over-range warning circuit and breaking alarming circuit on detection warning circuit plate；
The temperature over-range warning circuit include power supply unit, monitoring reference unit, temperature sensing unit, monitoring it is more single
Member and acousto-optic warning unit, monitoring comparing unit respectively with monitoring reference unit, temperature sensing unit and acousto-optic warning unit
It is connected；Temperature sensing unit uses temperature sensor；Power supply unit compares for monitoring reference unit, temperature sensing unit, monitoring
Unit and acousto-optic warning unit provide work energy；The breaking alarming circuit includes voltage circuit breaking alarming unit and electricity
Flow back to road breaking alarming unit.
The voltage circuit power alarm unit includes the first light emitting diode and the first buzzer of parallel connection, and first shines
Diode is connected with voltage circuit water conservancy diversion sheet metal both ends respectively with both ends after the first buzzer parallel connection；In the first light emitting diode
On be in series with 3rd resistor, the 4th resistance is in series on the first buzzer；3rd resistor and the 4th resistance are current-limiting resistance；
If open circuit conditions occur in the both ends of voltage circuit water conservancy diversion sheet metal, the both ends of voltage circuit water conservancy diversion sheet metal will appear alternation
Voltage, which will drive the first light emitting diode and the first buzzer to realize sound and light of alarm；
The current loop power alarm unit includes the second light emitting diode parallel with one another, the second buzzer and two-way
Voltage-stabiliser tube, is in series with the 6th resistance on the second light emitting diode, and the 6th resistance is current-limiting resistance；On bi-directional voltage stabilizing pipe
It is also parallel with the 5th resistance and gas-discharge tube being serially connected, the 5th resistance is current-limiting resistance, the gas-discharge tube
For high voltage protection；The both ends of current loop power alarm unit are connected with current loop water conservancy diversion sheet metal both ends respectively, electricity
The both ends of road power alarm unit are flowed back to respectively by a two-way TVS pipe（Transient Suppression Diode）Ground connection, for absorbing wave
Gush current protection subsequent conditioning circuit.
Monitoring reference unit includes concatenated first thermistor and first resistor, constitutes reference circuit；Temperature is sensitive single
Member includes concatenated second thermistor and second resistance, constitutes measuring circuit；First thermistor and the second thermistor
One end be connected power supply unit, first resistor is connected ground connection with one end of second resistance；First thermistor is mounted remotely from
The position of electric energy metering wiring box water conservancy diversion sheet metal is used for experiencing the variation of environment temperature；Second thermistor heat conductive silica gel with
Electric energy metering wiring box water conservancy diversion sheet metal is mounted on the variation for being used for experiencing water conservancy diversion sheet metal temperature in identical temperature field；Monitoring
The partial pressure of reference unit and temperature sensing unit output connection monitoring comparing unit, monitors the output voltage and temperature of reference unit
The output voltage of sensing unit is connected with the input terminal of monitoring comparing unit respectively, and monitoring comparing unit is compared, if super
Go out threshold value and then sends trigger signal to acousto-optic warning unit progress sound-light alarm.
In order to avoid erroneous judgement improves the anti-interference ability of circuit, the monitoring comparing unit uses hysteresis type comparator, in advance
If threshold voltage.
The acousto-optic warning unit is used drives buzzer by the multivibrator that 555 timers are constituted, and realizes sound report
It is alert, light alarm is realized using the LED light of triode driving.
Temperature sensing unit is located proximate to metal deflector, in order to detect the temperature change of metal deflector in time.
Acousto-optic warning unit is adjacent with the position of metal deflector, in order to indicate the problem of detected position.
It detects warning circuit plate and bottom is set in box body, be hidden in box body, to loss prevention, waterproof and shielding interference.
The power supply unit gets direct current 3.3V in return using battery powered or the change of line taking voltage step-down.
The utility model electric energy metering wiring box is simple in structure, does not have temperature alarming and open circuit for existing terminal box
The case where alarm function, provides a kind of intuitive, the inexpensive electrical energy measurement with temperature alarming with breaking alarm function
Wiring cartridge has the function of temperature over-range alarm and breaking alarming.Connecting terminal abnormal heating and terminals can be found in time
The problem of sub- wiring open circuit, in time excludes security risk.When the temperature is excessively high, buzzer sounds face different with LED light appearance
The light of color；It, can timely alarm when breaking problem occurs in water conservancy diversion sheet metal.Use the electric energy metering wiring box, safety
Property it is high, be easy to be engineered.The workload of staff can greatly be mitigated, improve working efficiency, reduce security risk risk.It is real
The detection of the circuit of existing least cost and alarm function.
Description of the drawings
Below with reference to attached drawing, the utility model is described in further detail：
Fig. 1 is the detonation configuration figure of the utility model；
Fig. 2 is the structure diagram of the temperature over-range warning circuit of the utility model；
Fig. 3 is the circuit diagram of the temperature sensing unit and monitoring reference unit of the utility model；
Fig. 4 is the circuit diagram of the voltage circuit breaking alarming unit of the utility model；
Fig. 5 is the circuit diagram of the current loop breaking alarming unit of the utility model.
In figure：1, reference unit is monitored, 2, temperature sensing unit, 3, monitoring comparing unit, 4, acousto-optic warning unit, 5, electricity
Source unit, 6, voltage circuit water conservancy diversion sheet metal, 7, current loop water conservancy diversion sheet metal, 8, box body, 9, metal deflector, 10, protecgulum
Fixed screw, 11, box body mounting-positioning holes, 12, wiring hole, 13, detection warning circuit plate, 14, conducting wire, 15-1, temperature sensing
Device, 15-2, LED light, 16, voltage link column, 17, electric current binding post, 18, protecgulum；
R1, first resistor, R2, second resistance, R3,3rd resistor, R4, the 4th resistance, R5, the 5th resistance, R6, the 6th electricity
Resistance, Pt1, the first thermistor, Pt2, the second thermistor, D, the first light emitting diode, B, the first buzzer, G1, gas are put
Fulgurite, D1, two-way TVS pipe, D2, two-way TVS pipe, D3, bi-directional voltage stabilizing pipe, D4, the second light emitting diode, B2, the second buzzer,
DA, the ends voltage circuit water conservancy diversion sheet metal A, DB, the ends voltage circuit water conservancy diversion sheet metal B, DC, the ends current loop water conservancy diversion sheet metal A,
DD, the ends current loop water conservancy diversion sheet metal B, Uo+ indicate that monitoring reference unit partial pressure output, Uo- indicate temperature sensing unit partial pressure
Output.
Specific implementation mode
With reference to attached drawing 1 ~ 2, electric energy metering wiring box of the utility model with fault alarm function is with box body 8, in box
Body 8 is internally provided with detection warning circuit plate 13, is equipped with electric current binding post 17 and voltage link column 16 in 8 inner wall of box body, electric current connects
It is connected using metal deflector 9 between terminal 17 and voltage link column 16；The box body 8 has protecgulum 18, is set on protecgulum 18
There is wiring hole 12, the wiring hole 12 is corresponding with the position of electric current binding post 17 and voltage link column 16, electric current binding post 17
Wiring hole 12 is passed through to expose box body 8 with voltage link column 16, so that the later stage uses wiring.
It is equipped with temperature over-range warning circuit and breaking alarming circuit on detection warning circuit plate 13；Temperature over-range alarm electricity
Road includes power supply unit 5, monitoring reference unit 1, temperature sensing unit 2, monitoring comparing unit 3 and acousto-optic warning unit 4, monitoring
Comparing unit 3 is connected with monitoring reference unit 1, temperature sensing unit 2 and acousto-optic warning unit 4 respectively；Temperature sensing unit 2
Using temperature sensor 15-1；Power supply unit 5 is monitoring reference unit 1, temperature sensing unit 2, monitoring comparing unit 3 and sound
Light alarm unit 4 provides work energy；The breaking alarming circuit includes that voltage circuit breaking alarming unit and current loop are disconnected
Road alarm unit.
Such as Fig. 4, voltage circuit power alarm unit includes the first light emitting diode D in parallel and the first buzzer B, and first
Light emitting diode D is connected with 6 both ends of voltage circuit water conservancy diversion sheet metal respectively with both ends after the first buzzer B parallel connections；In the first hair
It is in series with 3rd resistor R3 on optical diode D, the 4th resistance R4 is in series on the first buzzer B；3rd resistor R3 and the 4th
Resistance R4 is current-limiting resistance；If there is open circuit conditions, voltage circuit water conservancy diversion gold in the both ends of voltage circuit water conservancy diversion sheet metal 6
The both ends for belonging to piece 6 will appear the voltage of alternation, which will drive the first light emitting diode D and the first buzzer B to realize acousto-optic
Warning function；
Such as Fig. 5, the current loop power alarm unit includes the second light emitting diode D4 parallel with one another, the second buzzing
Device B2 and bi-directional voltage stabilizing pipe D3, is in series with the 6th resistance R6 on the second light emitting diode D4, and the 6th resistance R6 is current limliting
Resistance；The 5th resistance R5 being serially connected and gas-discharge tube G1, the 5th resistance are also parallel on bi-directional voltage stabilizing pipe D3
R5 is current-limiting resistance, and the gas-discharge tube G1 is used for high voltage protection；The both ends of current loop power alarm unit respectively with
7 both ends of current loop water conservancy diversion sheet metal are connected, and the both ends of current loop power alarm unit pass through two-way TVS pipe D1 and two-way
TVS pipe D2（Transient Suppression Diode）Ground connection, for absorbing surge current protection subsequent conditioning circuit.
Circuit as shown in Figure 3 is the specific embodiment for monitoring reference unit 1 and temperature sensing unit 2, the first temperature-sensitive
Resistance Pt1 and the second thermistor Pt2 is the identical platinum resistance thermometer sensor, of two Graduation Numbers, when the temperature is changed, the two change in resistance
Rule is identical.Resistance R1 and resistance R2 is the identical fixed value resistance of two resistance values, and temperature coefficient selects 5ppm/ DEG C.Monitoring reference
Unit includes concatenated first thermistor Pt1 and first resistor R1, constitutes reference circuit；Temperature sensing unit includes concatenated
Second thermistor Pt2 and second resistance R2, constitutes measuring circuit；First thermistor Pt1's and the second thermistor Pt2
One end is connected power supply unit, and first resistor R1 is connected ground connection with one end of second resistance R2；First thermistor Pt1 is mounted on
Position far from electric energy metering wiring box water conservancy diversion sheet metal is used for experiencing the variation of environment temperature；Second thermistor Pt2 is with leading
Hot silica gel, which is mounted on electric energy metering wiring box water conservancy diversion sheet metal in identical temperature field, to be used for experiencing water conservancy diversion sheet metal temperature
Variation；The partial pressure output connection monitoring comparing unit for monitoring reference unit and temperature sensing unit, monitors the output of reference unit
The output voltage of voltage and temperature sensing unit is connected with the input terminal of monitoring comparing unit respectively, and monitoring comparing unit is compared
Compared with if beyond sending trigger signal if threshold value to acousto-optic warning unit progress sound-light alarm.
In order to avoid erroneous judgement improves the anti-interference ability of circuit, monitoring comparing unit 3 uses hysteresis type comparator, and sets
Fixed suitable threshold voltage.Acousto-optic warning unit is used drives buzzer realization sound by the multivibrator that 555 timers are constituted
Sound is alarmed, and light alarm is realized using the LED light of triode driving.
Specific work process：
When electric energy metering wiring box works normally, metal deflector 9 is not in fever phenomenon, therefore the first thermistor
The resistance value of Pt1 and the second thermistor Pt2 are equal, at this point, measuring reference circuit partial pressure output Uo+It is divided with measuring circuit
Export Uo-Current potential is consistent, and the potential difference of the two is zero, and the hysteresis type comparator of monitoring comparing unit 3 will not occur to export shape
The reversion of state will not trigger acousto-optic warning unit 4.
When electric energy metering wiring box works normally, metal deflector 9 is not in fever phenomenon, but external environment temperature
Degree changes（Such as, day alternates with night）, the first thermistor used in reference unit 1 and temperature sensing unit 2 is monitored at this time
Pt1 and the second thermistor Pt2 are consistent due to being in identical temperature field change in resistance, and the electricity of first resistor R1 and second
Resistance R2 is that two fixed value resistance resistance values are constant, therefore the partial pressure output of reference unit 1 Uo is monitored in circuit shown in Fig. 3+With temperature sensitivity
The partial pressure output of unit 2 Uo-Identical change occurs, but there is no changes for the difference of both, therefore monitor the hysteresis of comparing unit 3
The reversion of output state will not occur for type comparator, i.e., will not trigger acousto-optic warning unit 4.
When electric energy metering wiring box operation irregularity, there is fever phenomenon in metal deflector, monitors 1 He of reference unit at this time
First thermistor Pt1 and the second thermistor Pt2 used in temperature sensing unit 2 are due in different temperature fields, resistance
Value variation is different, and first resistor R1 and second resistance R2 are that two fixed value resistance resistance values are constant, therefore circuit shown in Fig. 3
The middle partial pressure of monitoring reference unit 1 output Uo+Variable quantity and temperature sensing unit 2 partial pressure output Uo-Variable quantity it is different, this two
There is difference in person, therefore the hysteresis type comparator output state for monitoring comparing unit 3 inverts, and then triggers sound-light alarm list
Member 4 prompts subscribers' line to occur abnormal.
Voltage circuit water conservancy diversion sheet metal breaking alarming circuit is as shown in figure 4, if open circuit occur in the both ends metal deflector A, B
Situation, then the both ends A, B will appear the voltage of alternation, which will drive light emitting diode and buzzer to realize sound-light alarm work(
Energy.
Current loop water conservancy diversion sheet metal breaking alarming circuit is as shown in figure 5, if open circuit occur in the both ends metal deflector C, D
Situation, then the both ends C, D will appear larger alternating voltage, the voltage by bi-directional voltage stabilizing pipe D3 clampers, driving light emitting diode and
Buzzer realizes sound and light of alarm.
Foregoing circuit and its course of work are suitable for the temperature monitoring of single-phase circuit, use three-phase in actual production more
Electricity can increase two-way according to above-mentioned pattern, realize temperature monitoring and the alarm of three-phase electricity circuit.
Claims (10)
1. a kind of electric energy metering wiring box with fault alarm function has box body, it is characterised in that：It is equipped in tray interior
Detect warning circuit plate, electric current binding post and voltage link column be equipped in inboard wall of cartridge, electric current binding post and voltage link column it
Between using metal deflector be connected；The box body has protecgulum, and wiring hole, the wiring hole and electric current wiring are equipped on protecgulum
The position of column and voltage link column is corresponding, and electric current binding post and voltage link column pass through wiring hole to expose box body, so as to the later stage
Use wiring；It is equipped with temperature over-range warning circuit and breaking alarming circuit on detection warning circuit plate.
2. the electric energy metering wiring box according to claim 1 with fault alarm function, it is characterised in that：The temperature
Overload alarm circuit includes power supply unit, monitoring reference unit, temperature sensing unit, monitoring comparing unit and sound-light alarm list
Member, monitoring comparing unit are connected with monitoring reference unit, temperature sensing unit and acousto-optic warning unit respectively；Temperature is sensitive single
Member uses temperature sensor；Power supply unit is monitoring reference unit, temperature sensing unit, monitoring comparing unit and sound-light alarm
Unit provides work energy.
3. the electric energy metering wiring box according to claim 2 with fault alarm function, it is characterised in that：Monitoring reference
Unit includes concatenated first thermistor and first resistor, constitutes reference circuit；Temperature sensing unit includes concatenated second
Thermistor and second resistance, constitute measuring circuit；First thermistor is connected power supply with one end of the second thermistor
One end of unit, first resistor and second resistance is connected ground connection；First thermistor is mounted remotely from electric energy metering wiring box and leads
The position of stream sheet metal is used for experiencing the variation of environment temperature；Second thermistor is led with heat conductive silica gel and electric energy metering wiring box
Stream sheet metal is mounted on the variation for being used for experiencing water conservancy diversion sheet metal temperature in identical temperature field；It monitors reference unit and temperature is quick
The partial pressure output connection monitoring comparing unit for feeling unit, monitors the output voltage of reference unit and the output electricity of temperature sensing unit
Pressure is connected with the input terminal of monitoring comparing unit respectively, and monitoring comparing unit is compared, and triggering is sent if beyond threshold value
Signal carries out sound-light alarm to acousto-optic warning unit.
4. the electric energy metering wiring box according to claim 2 with fault alarm function, it is characterised in that：The monitoring
Comparing unit uses hysteresis type comparator, predetermined threshold value voltage.
5. the electric energy metering wiring box according to claim 2 with fault alarm function, it is characterised in that：The acousto-optic
Alarm unit is used drives buzzer by the multivibrator that 555 timers are constituted, and realizes audible alarm, is driven using triode
LED light realize light alarm.
6. the electric energy metering wiring box according to claim 2 with fault alarm function, it is characterised in that：Temperature is sensitive
Unit is located proximate to metal deflector, in order to detect the temperature change of metal deflector in time.
7. the electric energy metering wiring box according to claim 2 with fault alarm function, it is characterised in that：Sound-light alarm
Unit is adjacent with the position of metal deflector, in order to indicate the problem of detected position.
8. the electric energy metering wiring box according to claim 1 with fault alarm function, it is characterised in that：The open circuit
Warning circuit includes voltage circuit breaking alarming unit and current loop breaking alarming unit.
9. the electric energy metering wiring box according to claim 8 with fault alarm function, it is characterised in that：The voltage
Circuit power alarm unit includes the first light emitting diode and the first buzzer of parallel connection, the first light emitting diode and the first buzzing
Both ends are connected with voltage circuit water conservancy diversion sheet metal both ends respectively after device parallel connection；Third electricity is in series on the first light emitting diode
Resistance, is in series with the 4th resistance on the first buzzer；3rd resistor and the 4th resistance are current-limiting resistance；If voltage circuit is led
There are open circuit conditions in the both ends of stream sheet metal, then the both ends of voltage circuit water conservancy diversion sheet metal will appear the voltage of alternation, the voltage
It will the first light emitting diode of driving and the first buzzer realization sound and light of alarm.
10. the electric energy metering wiring box according to claim 8 with fault alarm function, it is characterised in that：The electricity
The second light emitting diode, the second buzzer and the bi-directional voltage stabilizing pipe that road power alarm unit includes parallel with one another are flowed back to, second
The 6th resistance is in series on light emitting diode, the 6th resistance is current-limiting resistance；It is also parallel on bi-directional voltage stabilizing pipe mutually
Concatenated 5th resistance and gas-discharge tube, the 5th resistance are current-limiting resistance, and the gas-discharge tube is protected for high voltage
Shield；The both ends of current loop power alarm unit are connected with current loop water conservancy diversion sheet metal both ends respectively, current loop power-off report
The both ends of alert unit are grounded by a two-way TVS pipe respectively, for absorbing surge current protection subsequent conditioning circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820089283.5U CN207817013U (en) | 2018-01-19 | 2018-01-19 | A kind of electric energy metering wiring box with fault alarm function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820089283.5U CN207817013U (en) | 2018-01-19 | 2018-01-19 | A kind of electric energy metering wiring box with fault alarm function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207817013U true CN207817013U (en) | 2018-09-04 |
Family
ID=63324532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820089283.5U Withdrawn - After Issue CN207817013U (en) | 2018-01-19 | 2018-01-19 | A kind of electric energy metering wiring box with fault alarm function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207817013U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152543A (en) * | 2018-01-19 | 2018-06-12 | 国网江苏省电力有限公司宿迁供电分公司 | A kind of electric energy metering wiring box with fault alarm function |
-
2018
- 2018-01-19 CN CN201820089283.5U patent/CN207817013U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108152543A (en) * | 2018-01-19 | 2018-06-12 | 国网江苏省电力有限公司宿迁供电分公司 | A kind of electric energy metering wiring box with fault alarm function |
| CN108152543B (en) * | 2018-01-19 | 2023-06-23 | 国网江苏省电力有限公司宿迁供电分公司 | Electric energy metering junction box with fault alarm function |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180904 Effective date of abandoning: 20230623 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20180904 Effective date of abandoning: 20230623 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |