CN202535604U

CN202535604U - Streetlight control circuit

Info

Publication number: CN202535604U
Application number: CN2012201714895U
Authority: CN
Inventors: 赵蕾; 张栋延
Original assignee: HEFEI XINGDONG ELECTRICAL APPLIANCE SWITCH CO Ltd
Current assignee: HEFEI XINGDONG ELECTRICAL APPLIANCE SWITCH CO Ltd
Priority date: 2012-04-20
Filing date: 2012-04-20
Publication date: 2012-11-14
Anticipated expiration: 2022-04-20

Abstract

The utility model belongs to the streetlight control field, and specifically relates to a streetlight control circuit. The streetlight control circuit comprises a main circuit that consists of a KM contactor normally open switch bridging three-phase line and a streetlight. The control circuit further comprises branch circuit for controlling the on-off state of the KM contactor normally open switch, wherein the branch circuit comprises a first branch circuit that is formed by an on-off switch connecting with the KM contactor in series; both ends of the series circuit are connected with the neutral wire and a one-phase wire of the streetlight. Once the on-off switch is closed, the KM contactor is switched on, and the KM contactor normally open switch is closed, and the streetlight illuminates. The control circuit further comprises an alarm unit, wherein the alarm unit comprises a KH thermal relay; the KH thermal relay is disposed on a section of circuit between the KM contactor normally open switch on the main circuit and the streetlight; and the KH thermal relay normally closed switch controlled by the KH thermal relay is arranged on the series circuit on the branch circuit. The streetlight control device is reliable in integral operation, and at the same time, an automatic response function in case of a circuit overheat fault is realized.

Description

A kind of streetlight control circuit

Technical field

The utility model belongs to street lamp control field, is specifically related to a kind of streetlight control circuit.

Background technology

In the control of general street lamp, its main body all be through service time controller control, also promptly in its control circuit, place time controller after, get the opening and closing time through preestablishing every day, open closing function at day at dark thereby realize it; Its whole control process is automation, uses no doubt very convenient and swift.Yet; Still there is the part of compeling To be improved in foregoing circuit: when fault such as overheat short circuit occurring when the The whole control circuit; Its entire circuit does not still possess quick reaction capability; Often cause its fault to be difficult in time realized and make effective Prevention Processing, thereby be easy to produce, thereby bring very big puzzlement to the staff such as the overheated phenomenon such as burn of circuit.

Summary of the invention

The purpose of the utility model provides a kind of streetlight control circuit simple in structure, and it is reliable, the automatic response function when possessing the circuit overheating fault.

For realizing above-mentioned purpose, the utility model has adopted following technical scheme: a kind of streetlight control circuit comprises the main circuit that is made up of KM contactor normal open switch bridge joint triple line and street lamp; Control circuit also comprises the parallel circuit that is used to control the keying of KM contactor normal open switch; Parallel circuit comprises first branch circuit of being connected and forming with the KM contactor by open-close on-off; The zero line that these series circuit two ends connect street lamp respectively reaches a wherein phase line, and open-close on-off is closed, and the KM contactor gets; KM contactor normal open switch is closed, and street lamp is luminous; Control circuit also comprises alarm unit; Said alarm unit comprises the KH thermal relay; The KH thermal relay is arranged on the KM contactor normal open switch and one section circuit between the street lamp on the main circuit, and the KH thermal relay normally closed switch of being controlled by the KH thermal relay is arranged on the series circuit on the parallel circuit.

The beneficial effect of the utility model is: through thermal relay is set on main circuit in advance; When the overheat short circuit fault appears in the The whole control circuit; Protection in the thermal relay is threaded off because overload current generates heat and escape; Break off thereby can control the KH thermal relay normally closed switch that is positioned on the parallel circuit automatically, and then play the effect of protective circuit; Because thermal relay own is the delay protection device, thereby but also just guaranteed still trouble free service of the interior adstante febre in short-term of circuit own, guarantee its actual operating efficiency; Its overall operation is reliable, the automatic response function in the time of also can realizing the circuit overheating fault simultaneously.

Description of drawings

Fig. 1 is the main circuit diagram of the utility model;

Fig. 2 is the parallel circuit figure of the utility model.

Embodiment

A kind of streetlight control circuit comprises the main circuit that is made up of KM contactor normal open switch bridge joint triple line and street lamp; Control circuit also comprises the parallel circuit that is used to control the keying of KM contactor normal open switch; Parallel circuit comprises first branch circuit of being connected and forming with the KM contactor by open-close on-off; The zero line that these series circuit two ends connect street lamp respectively reaches a wherein phase line, and open-close on-off is closed, and the KM contactor gets; KM contactor normal open switch is closed, and street lamp is luminous; Control circuit also comprises alarm unit; Said alarm unit comprises the KH thermal relay; The KH thermal relay is arranged on the KM contactor normal open switch and one section circuit between the street lamp on the main circuit; KH thermal relay normally closed switch by the control of KH thermal relay is arranged on the series circuit on the parallel circuit, shown in Fig. 1-2.

Further preferred version as the utility model: alarm unit also comprises auditory tone cues and/or light prompt assembly; One end of auditory tone cues and/or light prompt assembly is positioned on the zero line, and the other end also finally is connected on the wherein phase line of three-phase line through KH thermal relay normal open switch.Why adopting above-mentioned design, is to consider street lamp own in use, even its control circuit has possessed overload protection and automatic escape cut-out function, if the staff does not in time find and maintenance just still can exert an influence to its utilization benefit; Therefore, through auditory tone cues and/or light prompt assembly are set, the auditory tone cues assembly can be the HY buzzer during actual the use, and the light prompt assembly then can correspondingly be elected device assemblies such as photoflash lamp as, thereby realizes its sound-light prompting function; In case overheating fault appears in control circuit, the circuit auto-cutout, alarm unit comes into operation and reports to the police simultaneously, changes thereby supervise the staff before to go as early as possible to safeguard, finally realizes its prompt facility.

Certainly, the running of its alarm unit is set in aforementioned and principle is installed, here with regard to requisite after the staff receives the alarm unit alarm, to the releasing operation of its signal; Therefore; Of Fig. 2; Control circuit also comprises all clear unit; The all clear unit comprises the first auxiliary relay KA1, is positioned at by the KA1 normally closed switch of first auxiliary relay KA1 control on one section circuit of KH thermal relay normal open switch and auditory tone cues and/or light prompt inter-module on the alarm unit; The end of the first auxiliary relay KA1 connects the zero line place; The other end is communicated on the KH thermal relay normal open switch and one section circuit between the KA1 normally closed switch on the alarm unit after being connected in the parallel circuits of SB push-button switch and first auxiliary relay KA1 normal open switch formation more successively.Like this; When the staff hears the buzzer of alarm unit or sees the photoflash lamp flicker, get final product crawl SB push-button switch, this moment, the first auxiliary relay KA1 got; The first auxiliary relay KA1 normal open switch parallelly connected with the SB push-button switch is closed; The KA1 normally closed switch of connecting with alarm unit simultaneously breaks off, thereby realizes the shut-down operation of its auditory tone cues and/or light prompt assembly, and the staff can prepare and carry out fault and got rid of at this moment.

Further, open-close on-off is the SA rotary switch, and the end of incoming cables of open-close on-off is communicated with a wherein phase line of street lamp; It has the two-way leading-out terminal; One the tunnel directly is communicated with KM contactor and KH thermal relay normally closed switch and terminates in its zero line place and constitutes first branch circuit, and its another road is communicated with KM contactor and KH thermal relay normally closed switch and terminates in its zero line place via the KA2 normal open switch and constitutes second branch circuit; Control circuit also comprises the 3rd branch circuit, and an end of the 3rd branch circuit is communicated on one section circuit between open-close on-off and the KA2 normal open switch, and the circuit that the other end constitutes via the series connection of KT time switch and KA2 auxiliary relay also terminates in its zero line place.

In the above-mentioned circuit, be appreciated that to the startup that realizes its street lamp through the KM contactor, stop action; Replace small-sized contactor through the KA auxiliary relay, increase number of connections, realize the operation function of control circuit; Control the open and close time of street lamp through the KT time switch; Realize the control adjustment of manual and automatic two types of its parallel circuit simultaneously again through the SA rotary switch.

Further; Parallel circuit comprises that also display street lamp opens and closes the HR signal lamp of situation and the KA2 of the branch normal open switch that is used to control the HR signal lamp; One of HR signal lamp is terminated on the zero line, is communicated in place, open-close on-off end of incoming cables behind the KA2 of the other end series branch normal open switch; Main circuit also comprises the QF miniature circuit breaker; Said QF miniature circuit breaker one end connects three-phase line respectively; The other end is communicated with KM contactor normal open switch and street lamp in order to form series circuit, and the junction point of parallel circuit and phase line is on one section circuit between QF miniature circuit breaker and the KM contactor normal open switch.

For ease of understanding, be described in detail the concrete course of work of the utility model below in conjunction with Fig. 1-2:

(1), manual gear state: the QF miniature circuit breaker closes; The SA rotary switch is got to manual position; 1., 2. what also be rotary switch shown in Figure 2 puts on-position, this moment circuit turn-on, the coil electricity of KM contactor; The normal battle of KM contactor normal open switch that is positioned at the main circuit place is closed, street lamp energising beginning operate as normal; As want to let and close street lamp; Then only need the SA knob is got to stop position; At this moment KM contactor coil outage; Energising of all KM contactors and the switching point that is in closure state all will break off, thereby make heater outage stopping heating, also can directly break off the dead electricity of its KM contactor of QF miniature circuit breaker realization and the open-circuit operation of main circuit;

(2), automatic range state: the QF miniature circuit breaker that closes, the SA rotary switch is got to automated location, 3., 4. what also be rotary switch shown in Figure 2 puts on-position; The KT time switch begins according to the timing of switching on of its parameter preset, and when preset closing time arrives, KT time switch inner normal battle will closure; Thereby the KA2 normal open switch is closed; The KM contactor coil gets electric, the normal closure of making war of all of KM contactor, and street lamp is started working; When preset opening time arrives, the KT time switch will break off inner normal battle, the outage of KM contactor coil, and the point that is in closure state during all KM contactors energisings all will be opened, and street lamp quits work, the final timing break-make electric work ability that realizes automatically for street lamp.

(3), fault warning function: streetlight control circuit continuous firing; When the overheat short circuit fault occurring, be positioned at the KH thermal relay heating escape on the main circuit, the KH thermal relay normally closed switch that is positioned on the series circuit of KM contactor place breaks off; KM contactor dead electricity; The point that is in closure state during all KM contactor energisings all will be opened, and street lamp quits work, and is as shown in Figure 1; Simultaneously, the KH normal open switch of alarm unit place circuit begins closure, connects the HY buzzer on the alarm unit, and is as shown in Figure 2, and this moment, the HY buzzer gave the alarm notifying the staff, thereby realized its fault alarm function.

(4), fault warning removing function: after the staff finds alarm and arrives the destination; Disturb surrounding environment for avoiding alarm unit to continue to report to the police; Through crawl SB push-button switch; This moment, the first auxiliary relay KA1 got electric, parallelly connected with the SB push-button switch first auxiliary relay KA1 normal open switch closure, and the KA1 normally closed switch of connecting with alarm unit simultaneously breaks off; Thereby realize the releasing and the shut-down operation of its auditory tone cues and/or light prompt assembly, the staff can prepare and carry out fault eliminating operation this moment.

This novel street lamp control device has only been taked seldom, and the components and parts of a part have promptly reached timely discovery fault and the effect of protecting transmission line; Automatic response function when it not only has the circuit overheating fault; Have automatic warning and all clear function simultaneously concurrently for line fault; The many usefulness of one, cost performance is high, and overall operation is safe and reliable.

Claims

1. a streetlight control circuit is characterized in that: comprise the main circuit that is made up of KM contactor normal open switch bridge joint triple line and street lamp; Control circuit also comprises the parallel circuit that is used to control the keying of KM contactor normal open switch; Parallel circuit comprises first branch circuit of being connected and forming with the KM contactor by open-close on-off; The zero line that these series circuit two ends connect street lamp respectively reaches a wherein phase line, and open-close on-off is closed, and the KM contactor gets; KM contactor normal open switch is closed, and street lamp is luminous; Control circuit also comprises alarm unit; Said alarm unit comprises the KH thermal relay; The KH thermal relay is arranged on the KM contactor normal open switch and one section circuit between the street lamp on the main circuit, and the KH thermal relay normally closed switch of being controlled by the KH thermal relay is arranged on the series circuit on the parallel circuit.

2. streetlight control circuit according to claim 1; It is characterized in that: alarm unit also comprises auditory tone cues and/or light prompt assembly; One end of auditory tone cues and/or light prompt assembly is positioned on the zero line, and the other end also finally is connected on the wherein phase line of three-phase line through KH thermal relay normal open switch.

3. streetlight control circuit according to claim 2; It is characterized in that: control circuit also comprises all clear unit; The all clear unit comprises the first auxiliary relay KA1, is positioned at by the KA1 normally closed switch of first auxiliary relay KA1 control on one section circuit of KH thermal relay normal open switch and auditory tone cues and/or light prompt inter-module on the alarm unit; The end of the first auxiliary relay KA1 connects the zero line place; The other end is communicated on the KH thermal relay normal open switch and one section circuit between the KA1 normally closed switch on the alarm unit after being connected in the parallel circuits of SB push-button switch and first auxiliary relay KA1 normal open switch formation more successively.

4. according to claim 2 or 3 described streetlight control circuits, it is characterized in that: the auditory tone cues assembly is the HY buzzer.

5. according to claim 1 or 2 or 3 described streetlight control circuits, it is characterized in that: open-close on-off is the SA rotary switch, and the end of incoming cables of open-close on-off is communicated with a wherein phase line of street lamp; It has the two-way leading-out terminal; One the tunnel directly is communicated with KM contactor and KH thermal relay normally closed switch and terminates in its zero line place and constitutes first branch circuit, and its another road is communicated with KM contactor and KH thermal relay normally closed switch and terminates in its zero line place via the KA2 normal open switch and constitutes second branch circuit; Control circuit also comprises the 3rd branch circuit, and an end of the 3rd branch circuit is communicated on one section circuit between open-close on-off and the KA2 normal open switch, and the circuit that the other end constitutes via the series connection of KT time switch and KA2 auxiliary relay also terminates in its zero line place.

6. streetlight control circuit according to claim 5; It is characterized in that: parallel circuit comprises that also display street lamp opens and closes the HR signal lamp of situation and the KA2 of the branch normal open switch that is used to control the HR signal lamp; One of HR signal lamp is terminated on the zero line, is communicated in place, open-close on-off end of incoming cables behind the KA2 of the other end series branch normal open switch.

7. according to claim 1 or 2 or 3 described streetlight control circuits; It is characterized in that: main circuit also comprises the QF miniature circuit breaker; Said QF miniature circuit breaker one end connects three-phase line respectively; The other end is communicated with KM contactor normal open switch and street lamp in order to form series circuit, and the junction point of parallel circuit and phase line is on one section circuit between QF miniature circuit breaker and the KM contactor normal open switch.