CN204030295U - A kind of power distribution cabinet with electrocution-proof protection function - Google Patents
A kind of power distribution cabinet with electrocution-proof protection function Download PDFInfo
- Publication number
- CN204030295U CN204030295U CN201420477664.2U CN201420477664U CN204030295U CN 204030295 U CN204030295 U CN 204030295U CN 201420477664 U CN201420477664 U CN 201420477664U CN 204030295 U CN204030295 U CN 204030295U
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- power distribution
- distribution cabinet
- filter
- electrocution
- protection function
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Abstract
The utility model discloses a kind of power distribution cabinet with electrocution-proof protection function, comprise the power distribution cabinet and the protection module that are connected, in power distribution cabinet, be provided with transducer, in protection module, be provided with filter, filter on the one hand successively with the first amplifier, relay is connected, filter on the other hand successively with the second amplifier, alarm module is connected, on relay, be also connected with power supply, transducer is current sensor, transducer is connected with filter, in alarm module, be provided with buzzer, a kind of power distribution cabinet with electrocution-proof protection function of the utility model, solve the operating personnel that exist in prior art and at controller switching equipment, carried out the problem that inspection operation has very large danger during in electriferous state.
Description
Technical field
The utility model belongs to Electrical Control Technology field, is specifically related to a kind of power distribution cabinet with electrocution-proof protection function.
Background technology
Electric control system is to be connected to form according to certain requirement by motor and some electric components, to complete the system that production process is controlled specific function.Composition and working principle for Expression product mechanical electric control system, also be convenient to the installation of equipment simultaneously, debugging and maintenance, and each electric component and annexation in system are reflected with certain pattern, on pattern, with the graphic symbol of regulation, represent each electric component, and with letter symbol, each electric component is described, electrical schematic diagram is simple in structure, well arranged, be applicable to research and analysis circuit working principle, and can be trouble-shooting and offer help, also be the foundation of the electric installation winding diagram of establishment simultaneously, therefore in design department and production scene, be used widely, and power distribution cabinet has often just become very important carrier, each electric elements that can meet in circuit design are fixed on position definite in cabinet reliably, handled easily personnel operate and check, but, in existing production, the situation that there will be unavoidably equipment fault or Production requirement change and so on, sometimes just need operating personnel at controller switching equipment, to carry out inspection operation during in electriferous state, so, just there is the danger of certain degree in operating personnel's personal safety.
Utility model content
The purpose of this utility model is to provide a kind of power distribution cabinet with electrocution-proof protection function, has solved the operating personnel that exist in prior art and at controller switching equipment, has carried out the problem that inspection operation has very large danger during in electriferous state.
The technical scheme that the utility model adopts is; a kind of power distribution cabinet with electrocution-proof protection function; comprise the power distribution cabinet and the protection module that are connected; in power distribution cabinet, be provided with transducer; in protection module, be provided with filter; filter is connected with the first amplifier, relay on the one hand successively, and filter is connected with the second amplifier, alarm module on the other hand successively, is also connected with power supply on relay.
Feature of the present utility model is also,
Transducer is current sensor, and transducer is connected with filter.
In alarm module, be provided with buzzer.
The beneficial effects of the utility model are, a kind of power distribution cabinet with electrocution-proof protection function, by current sensor is set in power distribution cabinet, when human body touches current sensor, current sensor reaches the filter in protection module by signal, signal is divided into two-way after filter, one tunnel is after the first amplifier amplifies, arrive another road of relay and arrive alarm module after the second amplifier amplifies, relay makes power cut-off after receiving signal, alarm is reported to the police after receiving signal, so just reached the object of protection operating personnel life safety, avoid the generation of electric shock accidents.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation with the power distribution cabinet of electrocution-proof protection function of the utility model;
Fig. 2 is a kind of internal circuit diagram with the power distribution cabinet of electrocution-proof protection function of the utility model.
In figure, 1. power distribution cabinet, 2. filter, 3. the first amplifier, 4. relay, 5. power supply, 6. alarm module, 7. protection module, 8. transducer, 9. buzzer, 10. the second amplifier.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
A kind of power distribution cabinet with electrocution-proof protection function of the utility model, as shown in Figure 1, comprise the power distribution cabinet 1 and protection module 7 that are connected, in power distribution cabinet 1, be provided with transducer 8, in protection module 7, be provided with filter 2, filter 2 on the one hand successively with the first amplifier 3, relay 4 is connected, filter 2 on the other hand successively with the second amplifier 10, alarm module 6 is connected, on relay 4, be also connected with power supply 5, transducer 8 is current sensor, transducer 8 is connected with filter 2, in alarm module 6, be provided with buzzer 9, the circuit diagram of whole circuit as shown in Figure 2, in Fig. 2, the signal of high order end box indicating after filter process.
A kind of power distribution cabinet with electrocution-proof protection function of the utility model, in the situation that equipment does not decommission, when equipment goes wrong when needing operating personnel to overhaul or checking, when operating personnel operate in power distribution cabinet 1, if now which Modular surface is charged, transducer 8 will receive current signal, transducer 8 is sent to the filter 2 in protection module 7 by current signal, signal after device 2 filtration treatment after filtering, one tunnel can arrive the first amplifier 3, the first amplifier 3 can be converted into larger current signal by smaller current signal, reach relay 4, from filter 2 another road signal out, through the second amplifier 10, arrive alarm module 6, current signal is through arriving power supply 5 after relay 4, cut off the electricity supply 5, meanwhile, buzzer 9 in alarm module 6 sounds the alarm, remind operating personnel's cabinet inner module surface charging, avoid causing Danger Electric shock risk.
A kind of power distribution cabinet with electrocution-proof protection function of the utility model; when operating personnel are when controller switching equipment carries out inspection operation during in electriferous state; at equipment live, current sensor is partly installed; when human body touches charged module; the device generation alarm of switch cubicle; the charged item that please don't operate of devices illustrated, avoids the generation of electric shock accidents.
The operation principle of this utility model is described from each module principle aspect below:
The operation principle of its foundation of current sensor is mainly Hall effect, when former limit wire is during through over-current sensor, primary current IP can produce the magnetic line of force, the former limit magnetic line of force concentrates on around magnetic core, be built in Hall electrode in magnetic core air gap and can produce the only voltage of several millivolts of the size that is directly proportional with the former limit magnetic line of force, electronic circuit can be transformed into secondary current IS this small signal, and has following relational expression:
Wherein, IS-secondary current;
IP-primary current;
NP-primary coil number of turn;
NS-secondary coil number of turn;
NP/NS-turn ratio, generally gets NP=1.
The output signal of current sensor is secondary current IS, and it is directly proportional to input signal (primary current IP), and IS is generally very little, only has 100～400mA.If output current, through measuring resistance RM, can obtain the output voltage signal that a size being directly proportional to primary current is several volts.
Filter is a kind of device or circuit that signal is had to processing effect, and the function of filter is exactly to allow the signal of a certain component frequency to pass through smoothly, and the signal of other a part of frequency is subject to larger inhibition, and it is in fact a frequency selection circuit.In filter, the frequency range that signal can be passed through, is called passband or passband; Otherwise signal is subject to very high attenuation or complete repressed frequency range is called stopband; Boundary frequency between passband and stopband is called cut-off frequency; The voltage gain of ideal filter in passband is constant, and the voltage gain in stopband is zero; Between the passband of practical filter and stopband, there is the transition band of certain frequency scope.
Relay operation principle is: when input variable (as voltage, electric current, temperature etc.) reaches setting, make the electrical equipment of controlled output circuit conducting or disconnection, can be divided into electric parameters (as electric current, voltage, frequency, power etc.) relay and non electrical quantity (as temperature, pressure, speed etc.) the large class of relay two.The advantage such as have that action is fast, working stability, long service life, volume are little.Be widely used in electric power protection, automation, motion, remote control, measurement and communicate by letter etc. in device.Relay is a kind of electronic control device; it has control system (claim not only input circuit) and by control system (but also claiming output loop); conventionally be applied in automatic control circuit; it is actually a kind of " automatic switch " that removes to control larger electric current with less electric current, therefore play the effects such as automatic adjusting, safeguard protection, change-over circuit in circuit.
Claims (3)
1. a power distribution cabinet with electrocution-proof protection function; it is characterized in that; comprise the power distribution cabinet (1) and protection module (7) that are connected; in power distribution cabinet (1), be provided with transducer (8); in protection module (7), be provided with filter (2); filter (2) is connected with the first amplifier (3), relay (4) on the one hand successively; filter (2) is connected with the second amplifier (10), alarm module (6) on the other hand successively, is also connected with power supply (5) on described relay (4).
2. a kind of power distribution cabinet with electrocution-proof protection function according to claim 1, is characterized in that, described transducer (8) is current sensor, and transducer (8) is connected with filter (2).
3. a kind of power distribution cabinet with electrocution-proof protection function according to claim 2, is characterized in that, is provided with buzzer (9) in described alarm module (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420477664.2U CN204030295U (en) | 2014-08-22 | 2014-08-22 | A kind of power distribution cabinet with electrocution-proof protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420477664.2U CN204030295U (en) | 2014-08-22 | 2014-08-22 | A kind of power distribution cabinet with electrocution-proof protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204030295U true CN204030295U (en) | 2014-12-17 |
Family
ID=52070124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420477664.2U Expired - Fee Related CN204030295U (en) | 2014-08-22 | 2014-08-22 | A kind of power distribution cabinet with electrocution-proof protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204030295U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185035A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Anti-electric-shock distribution box |
| CN105186314A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Safe power distribution cabinet |
-
2014
- 2014-08-22 CN CN201420477664.2U patent/CN204030295U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185035A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Anti-electric-shock distribution box |
| CN105186314A (en) * | 2015-09-30 | 2015-12-23 | 国家电网公司 | Safe power distribution cabinet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160822 |