CN2593466Y

CN2593466Y - Time-delay control switch of fire passageway for high-rise building

Info

Publication number: CN2593466Y
Application number: CN 02237553
Authority: CN
Inventors: 陈有毅
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-07
Filing date: 2002-06-07
Publication date: 2003-12-17
Anticipated expiration: 2012-06-07

Abstract

The utility model relates to a time-delay control switch for controlling lighting power of a fire path in a high building. The time-delay control switch special for the fire path in the high building controls two paths of power: one path is the live wire of a commercial power, and the other path is the live wire of an emergency standby power. In an accidental fire, when the commercial power is cut off and the standby emergency power is started, the switch keeps lighting lamps of the path in the constant light state. At ordinary times, the switch is used as a common time-delay control switch. The control switch produced in the prior art has large design deficiency that two live wires can not be well insulated, so phase difference frequently existing between the two live wires can generate fire and short circuit causing damage, short service life and poor reliability. The utility model with the unique design can thoroughly ensure product reliability and feasibility, cause the product not easy to be damaged and to have prolonged service life.

Description

The delay control switch of fire prevention to high buildings passage

The utility model relates to electricity field, is a kind of delay control switch that fire prevention to high buildings passage control mains lighting supply is used that is used for.

The delay control switch control two-way power supply of fire prevention to high buildings passage special use, the one tunnel is the live wire of civil power, another road is the live wire of emergency standby power.Civil power outage when meeting accident the condition of a fire, spare emergent power source starts, and this special switch makes the pathway lighting lamp be in normal bright state, and it is as using common delay control switch at ordinary times.

The control switch that original technology is produced has bigger design defect, usually is damaged, and the life-span is short, poor reliability.Unique design of the present utility model can fully guarantee reliability of products and feasibility.Make product not fragile, the life-span prolongs greatly, and does not obviously increase the cost of product.

Why the control switch of original technology is damaged often, is because be inconsiderate because of designing, simultaneously also because this design has very big difficulty on difficulty.As a rule, require this control switch to have only three terminals: the civil power live wire; The live wire of emergency standby power and a loop line do not have zero line side.(two shared zero lines of different electrical power, but zero line side does not insert in the switch enclosure.) like this, design faces a very large difficult point, both how to have allowed two live wires realize good isolation, if can not well isolate two live wires, is easy to take place two sparking (short circuit) phenomenons between live wire so.In practice, be not the problem that there is not simultaneously power supply in the two-way power supply sometimes, when two live wires all had electricity, the phase difference between them was said by reason not have any rule, might be in the antiphase state.King-sized electrical potential difference is arranged so between the two, reach more than 600 volts.This causes very large difficulty just for the effective isolation between them.Can estimate that there is very big problem just in this in the control switch that original technology is produced, make product itself suffer many impaired probability and reliability of products is reduced, the lost of life.

The utility model has been announced a new practical plan.This name of the game is fully caught in its design, takes the effectively technological means of isolation, has well avoided double fire wire to isolate the generation of bad this problem, so it is reliable.

The utility model is also by some effective ways, reduces self electrical power consumed of switch under different situations greatly, can prevent possible because of component aging that switch heating itself causes, damage to greatest extent.Not only further increase reliability, improved life of product, also had the meaning of economize on electricity.Other designs of the design's comparison also have greater advantage on elimination or minimizing supply harmonic in addition.

In existing Chinese utility model patent, still do not retrieve the content that adopts similar the design's method.

Circuit theory of the present utility model is asked for an interview accompanying drawing, is described below:

Element was common time delayed turn-off electronic switching circuit around N01～N03, SCR1, B1 reached, and there do not have to be special.The characteristics of the utility model scheme show the circuit that J1, SCR2, Z2, D1, D2, R04～R06 form.Can analyze by accompanying drawing, turn-off or the adhesive attitude, all will stride across a resistance R 06 between live wire of emergency standby power (live wire 1) and the civil power live wire (live wire 2) no matter relay is in.R06 is a big resistance, powerful resistance, can tolerate enough high voltages.Live wire 1 and live wire 2 are connected on two fixed contacts of one group of contact of relay, and therefore, no matter relay is to discharge or adhesive, these two contacts can not bumped together.If not so, the phenomenon of instantaneous short circuit taking place because relay has action time of delay probably, even this time is very short, also can the contact be burnt because of very large short circuit current is arranged.Such processing method, releasing double fire wire that can be very safe is accidental all charged, and has the danger of very big phase difference, exempts the possibility that this switch is burnt out under particular case.

Analyze its course of work again.When live wire 1 was not charged, the normally opened contact of J1 was connected to the delay switch loop with live wire 2, and it is worked as common delay switch.After emergency standby power started, live wire 1 was charged, makes the J1 adhesive through D2, J1, SCR2, R06 loop.Its one group of contact of one side disconnects live wire 2 after the J1 adhesive, and has striden across R06 with live wire 2 connections; Another group contact of J1 is also with the SCR2 short circuit, and live wire 2 has just only passed through on the loop that J1 is connected to L1 (power load) live wire 2 like this.The J1 self-locking keeps the adhesive attitude to close up to emergency standby power, till live wire 2 dead electricity.After live wire 2 dead electricity, this switch recovers conventional state again.

When this circuit has just obtained electricity at live wire 2, though, can't obtain enough attract currents because of the R06 resistance is very big, but not conducting of SCR2 at the beginning, E1 is in charging gradually, and the E1 electric charge is full of by the time, SCR2 is conducting just now, and the electric energy of the last storage of E1 can help J1 to obtain enough attract currents.After the J1 adhesive short circuit R06, just can maintain attracting state and pinned.

The characteristics of this circuit are: 1, live wire of emergency standby power (live wire 1) and civil power live wire (live wire 2) are connected on pair two fixed contacts of wherein one group of contact of the relay of group contact.2, there is the resistance of a big resistance to do isolation between live wire 1 and the live wire 2 at ordinary times.3, relay circuit has controllable silicon to do as shown in the figure connection; Another group contact of relay can make relay produce self-locking.4, be in isolate two live wires after the self-locking attitude in the circuit isolation resistance by short circuit.5, can allow the controllable silicon conducting behind the full electricity of energy storage capacitor storage, utilize the full electric energy of energy storage capacitor storage to make relay reach attract current.

The utility model scheme also is a quite ripe concrete technical scheme, can satisfy the multiple requesting of a practical product in all many-sides such as environment for use, product internal structure, product appearance, product costs.Embodiment is all being arranged aspect novelty, the practicality.With urban development, skyscraper is more and more, so it is that market value is arranged very much at present.The product that adopts this scheme to produce can replace defective on the market existing product, and its application prospect is very optimistic.

Claims

1, a kind of delay control switch of fire prevention to high buildings passage, be used for the skyscraper pathway lighting lamp that has double fire wire is carried out dual control, it is characterized in that its formation has with the lower part: common delay switch circuit and relay latching circuit that can redirect between two live wires; Redirect relay latching circuit is made up of relay, controllable silicon constant voltage circuits for triggering and the energy storage capacitor etc. of two groups of contacts, entire circuit does not have connecting to neutral line point, the other end connecting to neutral of load light fixture, one group of contact of the relay of two groups of contacts, moving contact and lamp line are electrically connected, normally-closed contact and civil power live wire are electrically connected, normally opened contact is electrically connected with standby live wire by another group contact and controllable silicon, relay coil, D2 etc., and its common delay switch circuit is electrically connected through the normally-closed contact and the lamp load of redirect relay.

2, the delay control switch of fire prevention to high buildings passage according to claim 1, it is characterized in that: its relay circuit can redirect between two live wires, and can self-locking, controllable silicon constant voltage circuits for triggering are in the full electricity back conducting of energy storage capacitor storage, and the relay adhesive can be kept self-locking.

3, the delay control switch of fire prevention to high buildings passage according to claim 1, it is characterized in that: when standby live wire powers up, give energy storage capacitor E1 charging by R06, D2, controllable silicon constant voltage circuits for triggering are in the full electricity back conducting of energy storage capacitor storage, the relay adhesive can be kept self-locking, when the relay adhesive, civil power live wire loop disconnects, and the stand-by power supply loop is connected.