CN2144179Y

CN2144179Y - Auto-tracking low-termocontroller for sprinkling in mine

Info

Publication number: CN2144179Y
Application number: CN 92231016
Authority: CN
Inventors: 梁多生; 梁书明
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-08-24
Filing date: 1992-08-24
Publication date: 1993-10-20
Anticipated expiration: 2002-08-24

Abstract

The utility model discloses an automatic-tracking fire-fighting sprinkling controller used in mines, comprising an explosion proof package, a working circuit, an electromagnetic valve and at least two probes connected in parallel with the input end of the working circuit; each probe comprises two temperature-sensing elements. The working circuit comprises a microprocessor circuit supplied with an electric source by a voltage stabilizing circuit. The output end of the working circuit is connected to a bidirectional thyristor via a transmission circuit, an executive circuit and an isolating circuit for controlling the electromagnetic valve. The utility model, as an ideal safe matching protecting device, can automatically track temperatures and quickly sprinkle water as long as a fire scenario generates a slight temperature rise to extinguish the fire scenario in the embryonic stage.

Description

Auto-tracking low-termocontroller for sprinkling in mine

The utility model relates to a kind of energy automatic tracking loop border temperature, after the realization condition of a fire, produces the self-extinguishing sprinkler controller that humble temperature rise just can be sprinkled water.Particularly a kind of mining from motion tracking fire extinguishing sprinkler controller.It is the safe corollary equipment of the anti-fire accident in a kind of mine.

Existing usefulness low temperature fusible material and the low-boiling point liquid that uses, the Automatic Fire Extinguisher of development; Temperature-sensitive automatic spray valve; The fire hydrant automaton; Reach temperature control automatic fire sprinkler with the temperature-sensing element assembling.All belong to constant temperature or transfer back constant temperature type.The constant temperature type must fire after to a certain degree and could sprinkle water at fire.Could sprinkle water after just having caused certain loss.Otherwise limiting temperature is transferred to ambient air temperature when close, also can be missed the disadvantage of watering because of the variation of ambient air temperature.Especially the down-hole, mine does not more allow the mistake watering.

The purpose of this utility model is to provide a kind of and can overcomes on the spirnkler fire extinguishing systems such as above-mentioned disadvantage stable performance, reliable, the belt conveyer that is applicable to the easy breaking out of fire in down-hole, mine and other chamber.

The utility model is achieved in that it by explosion-resistant enclosure A, operating circuit B, and electromagnetic valve C forms.Its special character is; Adopt at least two probes, increased computer treatment circuit IC3 among the operating circuit B.IC3 two inputs are through resistance R 2, R3 downwards with probe T1 in temperature-sensing element t4, the temperature-sensing element t3 in the T2 links.T3, t4 lower end ground connection.Upwards temperature-sensing element t1 and the resistance R 1 in probe T1 links, and temperature-sensing element t2 and variable resistor W1 in the probe T2 link, another termination positive supply of resistance R 1 and variable resistor W2.Mu balanced circuit IC1, IC2 provide positive-negative power to IC3.IC3 output termination signal circuit SC1.SC1 meets executive circuit IC4.IC4 meets buffer circuit GL1, and GL1 meets bidirectional triode thyristor SCR1, SCR1 control electromagnetic valve C.

Operating principle of the present utility model is as follows: operating circuit B reduces to two groups of 9V alternating currents with down-hole, mine 127V or 36V AC power through transformer B1, carries out rectification, filtering, voltage stabilizing again, obtains two groups of 5V dc sources.Positive and negative 5V power supply is provided and provides positive supply to computer treatment circuit IC3 respectively to operating circuit.

Concrete operating principle of the present utility model is as follows: two probes are installed in the public attention up and down at easy ignition position respectively.Two probes detect same environment temperature at ordinary times, and the temperature signal of its detection is identical, computer treatment circuit IC3 output normality information.When the condition of a fire appears in fire district, last public attention probe measured temperature is a home temperature, and public attention probe measured temperature is the condition of a fire temperature that slightly raises of the reflection condition of a fire down.Analyzing and processing through computer treatment circuit IC3, accident information with its identification, export to signal circuit SC1, information after SC1 handles, be transferred to executive circuit IC4, execution command after IC4 handles hands over buffer circuit GL1 to isolate transmission again, makes the detection treatment circuit among the operating circuit B.It also is the essential safe type circuit part of this circuit, have reliable electrical isolation with watering operating circuit (non-intrinsic safety type), by the execution command of buffer circuit GL1 output, SCR1 sends work order to bidirectional triode thyristor, make it connect electromagnetic valve C, carry out the watering task.Variable resistor W1 among the operating circuit B is two probe equalization point adjustment.Variable resistor W2 adjusts anti-interference time delay.

The utility model is compared with prior art: have highly sensitively, need not adjust after once setting up again, can carry out fire extinguishing water timely at the condition of a fire initial stage.Avoid causing damage.It can not only be widely used in the down-hole, mine, as long as increase by two probes T3, T4 again, promptly four temperature-sensing elements are distributed into four probes simultaneously, and to change power supply be 220 volts of inputs, just can be useful for the anti-fire extinguishing system of ground industrial enterprise material depot and civilian installation.

Accompanying drawing and drawing explanation:

Fig. 1 is a structure chart of the present utility model

Fig. 2 is a mining embodiment circuit diagram of the present utility model

Fig. 3 is the utility model ground with an embodiment circuit diagram

Wherein: RD1, RD2--fuse; The B1--transformer; QL1,--rectifier bridge; The C1-C4--filter condenser; C5--is a delay capacitor; IC1, IC2,--regulator block; IC3--computer integrated circuit; The SC1--signal circuit; IC4--carries out integrated circuit; The GL1--buffer circuit; W1, W2--variable resistor; R1-R8--resistance; The D1--diode; The SCR1--bidirectional triode thyristor; The C--electromagnetic valve; T1-T4--temperature detection probe

Below in conjunction with Fig. 2.The utility model is described in further detail for Fig. 3: some important components and parts models.IC1 is 7805, and IC2 is 7905, and IC3 is CA3140, and IC4 is EN555, T1, and T2, T3, T4 are T-121, and GL1 is MOC3020, and SC1 is SC0051.

Present embodiment is by explosion-resistant enclosure A, probe T1, and T2, operating circuit B, electromagnetic valve C forms.Increased computer treatment circuit IC3 among the operating circuit plate B, by probe T1, T2, variable resistor W1, resistance R 1, R2, R3 has formed its detection and input circuit.Output signal is handled after variable resistor W2 through signal circuit SC1, and the delay anti-jamming circuit that capacitor C5 is formed outputs to executive circuit IC4, meets buffer circuit GL1 after IC4 handles, the output signal of GL1, trigger bidirectional triode thyristor and make its conducting,, sprinkle water to electromagnetic valve C power supply.

For making the utility model be useful for fuel gas, the environment of explosion danger is arranged, its shell makes explosion-proof type, operating circuit B make printed circuit board (PCB) with its can in an explosion-resistant enclosure A.A establishes four outlet horn mouths, and one of them is electric power incoming line mouth and an electromagnetic valve line outlet.Two are the probe line outlet in addition.One of them probe is installed in last public attention of anti-attack area.Another probe is installed in down public attention.When not having the condition of a fire, two probes detect same ambient air temperature, and by probe T1, T2 variable resistor W1, resistance R 1, the detection bridge of forming are to be in equilibrium state.The circuit of back is in the normal state.Take place as the condition of a fire, the temperature that public attention detects on it is environment temperature, and the temperature of public attention detection is a reflection condition of a fire temperature down.Detect the bridge out-of-balance condition, micro-difference has appearred in its output, input to computer treatment circuit IC3 through resistance R 2, R3, after the IC3 analyzing and processing, after the adjusting of signal circuit SC1, be transferred to the delay anti-jamming circuit that capacitor C5 forms again by variable resistor W2, by the signal that delay anti-jamming circuit was handled, give executive circuit IC4.The execution command of IC4 output is isolated through buffer circuit GL1, drives the two-way silicon magnetic SCR1 that visits, and sprinkles water to electromagnetic valve C power supply.

Another embodiment of the present utility model as shown in Figure 3.In this embodiment, two probe T3 have been increased, T4.Different is with first embodiment, with four temperature-sensing element t1t2t3t4, is respectively charged in four probes, and other changes into 220 volts except that the power supply input, and is all identical.This embodiment is suitable for the fire prevention system of ground industrial enterprise, material depot, civilian installation.On four limits at anti-fire extinguishing position or four jiaos, install probe T1, T2, T3 in order, four probes detected the bridge balance with detecting same ambient air temperature when T4 was flat during use.The back circuit is for normality.Take place as the condition of a fire, as long as one of them, two or three probes are felt small temperature rise, make the detection bridge lose balance, and the following course of work is with first embodiment.

Claims

1, a kind of mining from motion tracking fire extinguishing sprinkler controller, comprise explosion-resistant enclosure (A), operating circuit (B), electromagnetic valve (C).It is characterized in that: (T1 T2) is parallel to two inputs of operating circuit (B) at least two probes; One of them input links to each other with the lower end of temperature-sensing element (t1) in the probe (T1) through resistance (R3), link to each other with the upper end of temperature-sensing element (t3) in the probe (T2) again, wherein another input links to each other with the lower end of temperature-sensing element (t2) in the probe (T2) through resistance (R2), link to each other with the temperature-sensing element (t4) of probe in (T1) again, the upper end of temperature-sensing element (t1) connects positive supply through resistance (R1) in the probe (T1), temperature-sensing element (t4) lower end ground connection, temperature-sensing element (t3) lower end ground connection; Comprise microcontroller circuit (IC3) in the operating circuit (B), its positive-negative power is supplied with by mu balanced circuit (IC1), (IC2) respectively, its this circuit of output termination transmission circuit (SC1) connects executive circuit (IC4), then connect buffer circuit (GL1), a bidirectional triode thyristor (SCR1) links to each other with described buffer circuit, is used for control electromagnetic valve (C).

2, according to claim 1. described sprinkler controllers, it is characterized in that: can arrive on two inputs of operating circuit (B) by four probes in parallel (T1-T4) at most.