CN103207147B - Mine intrinsic safety smoke transducer - Google Patents
Mine intrinsic safety smoke transducer Download PDFInfo
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- CN103207147B CN103207147B CN201310019204.5A CN201310019204A CN103207147B CN 103207147 B CN103207147 B CN 103207147B CN 201310019204 A CN201310019204 A CN 201310019204A CN 103207147 B CN103207147 B CN 103207147B
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Abstract
The invention provides a kind of mine intrinsic safety smoke transducer, comprise upper cover, platen, chassis, seal assembly, mount pad, fume hood, outlet nozzle and circuit arrangement; Circuit arrangement comprises gas-sensitive sensing element, photo electric sensitive element, alarm lamp, circuit board; Circuit board is integrated with air-sensitive detection, photodetection signal processing circuit, single-chip microcomputer and alerting signal output circuit; Gas-sensitive sensing element, photo electric sensitive element, alarm lamp and circuit board are all fixedly mounted on mount pad; Mount pad and outlet nozzle are fixedly mounted on chassis; Upper cover covers on the top of mount pad and is positioned at upper end, chassis; Be fixedly connected with by O-ring seal with chassis after platen socket fastens upper cover bottom; Fume hood is connected with the lower thread of mount pad.The present invention improves promptness and the accuracy of underground coal mine smog alarm significantly, improves the capability and qualification of coal mine downhole safety accident prevention, effectively can adapt to the severe environment for use such as the many dust of underground coal mine, water dripping.
Description
Technical field
The present invention relates to sensor field, be specifically related to a kind of sensor being applicable to the Test Field smog of the essential safety used in the inferior industrial and mineral environment of coal mine.
Background technology
At present, underground coal mine common are the gentle sensitive sensor of electro-optical pickoff for the sensor detecting smog, these two kinds of sensor application detect smog in underground coal mine all its respective weak point: traditional electro-optical pickoff is in the environment that underground coal mine dust is more, easily produce misoperation by dust interference, stability and the reliability of thus its work are inadequate; Its probe of another kind more widely used air-sensitive formula sensor is broad spectrum type probe, because it does not have selectivity to the detection of gas, in use easily by the interference of other gases such as gas, carbon monoxide.According to field experiment, when gas density is slightly high, adopt air-sensitive formula sensor, it reaches 40% to the False Rate that smog produces, and starts power-off protection because of the security system in colliery during gas density height, is de-energized when it is not reported to the police; Photoelectric technology sensor at dust excessive or sensor dust stratification is more time very high to real false smoke alarms rate; Also paid pilot production ionic formula sensor, but this type sensor is again because there is radiation in its probe, thus limits its application.
Summary of the invention
The object of the invention is: overcome the deficiencies in the prior art, provide the advantage of a kind of gas collection sensitive sensor and electro-optical pickoff in one and overcome the respective deficiency of this amphitypy sensor, strong interference immunity, mine intrinsic safety smoke transducer that functional reliability is high.
Technical scheme of the present invention is: mine intrinsic safety smoke transducer of the present invention, and its design feature is: comprise upper cover, platen, chassis, seal assembly, mount pad, fume hood, outlet nozzle and circuit arrangement; Above-mentioned circuit arrangement comprises gas-sensitive sensing element, photo electric sensitive element, alarm lamp and circuit board; Circuit board is provided with air-sensitive detectable signal treatment circuit, photodetection signal processing circuit, single-chip microcomputer and alerting signal output circuit; Above-mentioned seal assembly comprises the first O-ring seal;
The gas-sensitive sensing element of above-mentioned circuit arrangement, photo electric sensitive element, alarm lamp and circuit board are all fixedly mounted on mount pad; Mount pad and outlet nozzle are fixedly mounted on chassis respectively; The upper surface that upper cover is fastened on chassis covers the top of mount pad; Be fixedly connected with after being sealed by the first O-ring seal of seal assembly with chassis after platen socket fastens the bottom of upper cover; Fume hood is connected with the lower thread of mount pad;
Air-sensitive detectable signal treatment circuit on the circuit board of above-mentioned circuit arrangement and photodetection signal processing circuit are provided with signal input part and signal output part respectively; Single-chip microcomputer is provided with the first signal input part, secondary signal input end and control signal output terminal; Alerting signal output circuit is provided with control signal input end, alarm lamp lights control end and alarm signal output ends; Gas-sensitive sensing element and photosensitive sensor all have signal output part;
The signal input part of air-sensitive detectable signal treatment circuit is electrically connected with the signal output part of gas-sensitive sensing element; The signal input part of photodetection signal processing circuit is electrically connected with the signal output part of photosensitive sensor; First signal input part of single-chip microcomputer is electrically connected with the signal output part of air-sensitive detectable signal treatment circuit; The secondary signal input end of single-chip microcomputer is electrically connected with the signal output part of photodetection signal processing circuit; The control signal input end of alerting signal output circuit is electrically connected with the control signal output terminal of single-chip microcomputer; The alarm lamp of alerting signal output circuit is lighted control end and is electrically connected with the positive pole of alarm lamp; The alarm signal output ends of alerting signal output circuit is exported from outlet nozzle by wire.
Further scheme is: above-mentioned upper cover comprises cover body, hasp and peg; Cover body comprises the top board of integral connection, cylinder part and bottom; Top board is horizontally disposed plate body part; Cylinder part is the cylindrical plate body part of hollow; Bottom is integrally made up of curved portions and bottom, and the lower horizontal of bottom outwards opens, and bottom is connected with the lower end one of cylinder part by the upper end of its curved portions; Cylinder part is connected with top board one by its upper end; Hasp is provided with identical 2, and 2 hasps divide left and right to be weldingly fixed on the upper surface of the top board of cover body; The two ends of peg are fixed in 2 hasps movably.
Further scheme is: above-mentioned platen comprises annular portion and the shirt rim of integral connection; The annular portion of platen is annular plate body part, and is positioned at top, and the diameter of the middle circular hole of annular portion, slightly larger than the external diameter of the cylinder part of the cover body of upper cover, is less than the external diameter of the bottom of the bottom of cover body; The shirt rim of platen is the oblate cylindricality plate body part of hollow, and shirt rim is connected with the periphery one of annular portion with its upper end; The annular portion of platen is evenly provided with 5 attachment screw holes of up/down perforation according to annulus surrounding.
Further scheme is: above-mentioned chassis is circular plate body part; The internal diameter of the external diameter on chassis and the shirt rim of platen adapts; Chassis is provided with mount pad mounting hole, warning lampshade mounting hole, outlet nozzle mounting hole, outlet nozzle fixing screw hole, attachment screw hole and mount pad fixing screw hole; Mount pad mounting hole is arranged on the center on chassis; Warning lampshade mounting hole is provided with 2, the left and right that 2 warning lampshade mounting holes are symmetricly set on chassis to axis on, and be divided into the both sides, front and back of mount pad mounting hole; Outlet nozzle mounting hole is arranged on the left side on the sagittal axis on chassis; Outlet nozzle fixing screw hole is provided with 4, and 4 outlet nozzle fixing screw holes are symmetricly set on the surrounding of outlet nozzle mounting hole; Attachment screw hole is provided with 5, and 5 attachment screw holes are uniformly set on the periphery on chassis 3; Mount pad fixing screw hole is provided with 4 altogether, 2 warning lampshade mounting holes each side arrange 1.
Further scheme is: above-mentioned seal assembly also comprises the second O-ring seal, the 3rd O-ring seal and sensing element wire guide sealing gasket; 3rd O-ring seal is provided with 2;
Above-mentioned mount pad comprises upper plate, fume hood connecting portion, sensing element installing plate, wire guide sealing gasket pressing plate and warning lampshade;
Above-mentioned upper plate be left and right to horizontally disposed round plastic plate body part, upper plate is provided with circuit board mounting screw post, sensing element wire guide, alarm lamp mounting hole and outlet nozzle mounting hole; Circuit board mounting screw post is provided with 4 altogether and upper surface by upper plate raises up, and is arranged on the left side of upper plate before and after 2 circuit board mounting screw posts wherein divide; The middle part, right side of upper plate is arranged on before and after other 2 circuit board mounting screw posts divide; Sensing element wire guide is arranged on the centre of upper plate; The left and right that alarm lamp mounting hole is arranged on upper plate to axis on both sides, front and back; Fume hood connecting portion is the right cylinder of hollow, and the internal diameter of the mount pad mounting hole on its external diameter and above-mentioned chassis adapts; The outer wall of fume hood connecting portion is provided with the external thread connected; Fume hood connecting portion is connected with the lower surface of upper plate is integral by its upper surface; Sensing element installing plate is fixedly mounted on the lower surface of the upper plate in the encirclement of fume hood connecting portion; Wire guide sealing gasket pressing plate is arranged on the top of the sensing element wire guide of upper plate; Wire guide sealing gasket pressing plate is fixedly connected with upper plate after pushing down the sensing element wire guide sealing gasket of seal assembly; Alarm lamp is covered with 2, and warning lampshade is bonding with the lower surface of the upper plate of the alarm lamp mounting hole on upper plate by its upper end, passes the warning lampshade mounting hole on chassis under warning lampshade is backward by the 3rd O-ring seal of seal assembly.
Further scheme also has: above-mentioned fume hood comprises cover body and the base plate of integral connection; Cover body is the truncated cone-shaped plate body part of hollow, and the diameter of the upper port of cover body is greater than the diameter of lower port; Cover body is connected with the periphery one of base plate by its lower end; Cover body is provided with 4 to 30 oblique grooves; The upper end inwall of cover body is provided with the internal thread installed and connect.
The present invention has positive effect: (1) the present invention is by detecting smog and the combination of photodetection smog by air-sensitive, overcome that gas sensing property acquisition sensor in prior art causes the tetchiness of gas because of the insensitivity to dust fail to report, report by mistake and photo electric acquisition sensor because of to the insensitivity of gas and the wrong report being subject to dust interference and causing, the defect failed to report, improve promptness and the accuracy of underground coal mine smog alarm significantly, thus improve the capability and qualification of coal mine downhole safety accident prevention significantly.(2) design cooperatively interacted between the structure of the present invention by upper cover, pressing plate, chassis 3 with install O-ring seal additional and be connected, and the cover body of fume hood arranges oblique groove, effectively can adapt to underground coal mine and drip from top and leak and the severe environment for use such as dust is many.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to cut-open view;
Fig. 3 is the upward view of Fig. 1;
Fig. 4 is the vertical view after removing upper cover in Fig. 1;
Fig. 5 is the vertical view after removing circuit board in Fig. 4;
Fig. 6 is the structural representation on chassis in Fig. 2, also show the matching relationship of the platen in itself and Fig. 2 in figure;
Fig. 7 is the theory diagram of circuit arrangement of the present invention.
Reference numeral in above-mentioned accompanying drawing is as follows:
Upper cover 1, cover body 11, top board 11-1, cylinder part 11-2, bottom 11-3, hasp 12, peg 13,
Platen 2, annular portion 21, attachment screw hole 21-1, shirt rim 22,
Chassis 3, mount pad mounting hole 31, warning lampshade mounting hole 32, outlet nozzle mounting hole 33, outlet nozzle fixing screw hole 33-1, attachment screw hole 34, mount pad fixing screw hole 35,
Seal assembly 4, the first O-ring seal 41, second O-ring seal the 42, three O-ring seal 43, sensing element wire guide sealing gasket 44,
Mount pad 5, upper plate 51, circuit board mounting screw post 51-1, sensing element wire guide 51-2, alarm lamp mounting hole 51-3, fume hood connecting portion 52, sensing element installing plate 53, wire guide sealing gasket pressing plate 54, warning lampshade 55,
Fume hood 6, cover body 61, oblique groove 61-1, base plate 62,
Outlet nozzle 7,
Circuit arrangement 8, gas-sensitive sensing element 81, photo electric sensitive element 82, alarm lamp 83,
Circuit board 84, air-sensitive detectable signal treatment circuit 84-1, photodetection signal processing circuit 84-2, single-chip microcomputer 84-3, alerting signal output circuit 84-4.
Embodiment
(embodiment 1)
See Fig. 1, Fig. 2 and Fig. 7, the mine intrinsic safety smoke transducer of the present embodiment, be made up of upper cover 1, platen 2, chassis 3, seal assembly 4, mount pad 5, fume hood 6, outlet nozzle 7 and circuit arrangement 8.Circuit arrangement 8 is made up of gas-sensitive sensing element 81, photo electric sensitive element 82, alarm lamp 83 and circuit board 84, and circuit board 84 is provided with air-sensitive detectable signal treatment circuit 84-1, photodetection signal processing circuit 84-2, single-chip microcomputer 84-3 and alerting signal output circuit 84-4.
Upper cover 1 is made up of cover body 11, hasp 12 and peg 13.The material of cover body 11 is corrosion resistant plate.Cover body 11 is by all-in-one-piece top board 11-1, cylinder part 11-2 and bottom 11-3 form from top to bottom.Top board 11-1 is horizontally disposed circular plate body; Cylinder part 11-2 basic configuration is the cylindrical plate body part of hollow; Bottom 11-3 is integrally made up of curved portions and bottom, and the lower horizontal of bottom outwards opens, and bottom 11-3 is connected with the lower end one of cylinder part 11-2 by the upper end of its curved portions; Cylinder part 11-2 is connected with top board 11-1 one by its upper end.Hasp 12 is provided with identical 2, and 2 hasps about 12 points are weldingly fixed on the upper surface of the top board 11-1 of cover body 11.Peg 13 is formed by stainless steel wire bending, and the two ends of peg 13 are fixed in 2 hasps 12 movably.
The material of platen 2 is corrosion resistant plate.Platen 2 is made up of the annular portion 21 integrally connected and shirt rim 22.The annular portion 21 of platen 2 is annular plate body part, and is positioned at top, and the internal diameter of the middle circular hole of annular portion 21, slightly larger than the external diameter of the cylinder part 11-2 of the cover body 11 of upper cover 1, is less than the external diameter of the bottom of the bottom 11-3 of cover body 11.The annular portion 21 of platen 2 is evenly provided with 5 attachment screw hole 21-1 of up/down perforation according to annulus surrounding.The oblate cylindricality plate body part of the hollow that the shirt rim 22 of platen 2 is arranged for vertical, shirt rim 22 is to be connected with the periphery one of annular portion 21 above it.
See Fig. 2, Fig. 3 and Fig. 6, the material on chassis 3 is corrosion resistant plate.Chassis 3 is circular plate body part, and the internal diameter of the external diameter on chassis 3 and the shirt rim 22 of platen 2 adapts.Chassis 3 is provided with mount pad mounting hole 31, warning lampshade mounting hole 32, outlet nozzle mounting hole 33, outlet nozzle fixing screw hole 33-1, attachment screw hole 34 and mount pad fixing screw hole 35.Each mounting hole and screw hole are the manhole of upward and downward.
Mount pad mounting hole 31 is arranged on the center on chassis 3.Warning lampshade mounting hole 32 is provided with 2, the left and right that 2 warning lampshade mounting holes 32 are symmetricly set on chassis 3 to axis on, and be divided into the both sides, front and back of mount pad mounting hole 31.Outlet nozzle mounting hole 33 is arranged on the left side of the sagittal axis on chassis 3; Outlet nozzle fixing screw hole 33-1 is provided with 4, and 4 outlet nozzle fixing screw hole 33-1 are symmetricly set on the surrounding of outlet nozzle mounting hole 33.Attachment screw hole 34 is provided with 5, and 5 attachment screw holes 34 are uniformly set on the periphery on chassis 3, matches during for installing with 5 attachment screw hole 21-1 in the annular portion 21 of platen 2.Mount pad fixing screw hole 35 is provided with 4 altogether, and these 4 mount pad fixing screw holes 35 each side arrange 1 at 2 warning lampshade mounting holes 32.
See Fig. 2, seal assembly 4 comprises the first O-ring seal 41, second O-ring seal 42, the 3rd O-ring seal 43 and sensing element wire guide sealing gasket 44.The material of seal assembly 4 is rubber parts.3rd O-ring seal 43 arranges 2.
See Fig. 2 and Fig. 5, mount pad 5 is made up of upper plate 51, fume hood connecting portion 52, sensing element installing plate 53, wire guide sealing gasket pressing plate 54 and warning lampshade 55.Upper plate 51 is that left and right is to horizontally disposed round plastic plate body part, upper plate 51 is provided with circuit board mounting screw post 51-1, sensing element wire guide 51-2, alarm lamp mounting hole 51-3 and outlet nozzle mounting hole, circuit board mounting screw post 51-1 is provided with 4 altogether and upper surface by upper plate 51 raises up, and is arranged on the left side of upper plate 51 before and after 2 circuit board mounting screw post 51-1 wherein divide; The middle part, right side of upper plate 51 is arranged on before and after other 2 circuit board mounting screw post 51-1 divide.Sensing element wire guide 51-2 is arranged on the centre of upper plate 51, is the through hole of upward and downward; The left and right that alarm lamp mounting hole 51-3 is arranged on upper plate 51 to axis on both sides, front and back.Fume hood connecting portion 52 is the right cylinder of hollow, and the internal diameter of the mount pad mounting hole 31 on its external diameter and aforesaid chassis 3 adapts, and the outer wall of fume hood connecting portion 52 is provided with the external thread connected; Fume hood connecting portion 52 is connected with the lower surface of upper plate 51 is integral by its upper surface.Sensing element installing plate 53 be front and back to horizontally disposed plate body, sensing element installing plate 53 by screw be fixedly mounted on fume hood connecting portion 52 surround in upper plate 51 lower surface on.Wire guide sealing gasket pressing plate 54 is working of plastics, is arranged on the top of the sensing element wire guide 51-2 of upper plate 51, and during installation, wire guide sealing gasket pressing plate 54 is fixedly connected with upper plate 51 with screw after pushing down the sensing element wire guide sealing gasket 44 of seal assembly 4.Warning lampshade 55 is provided with 2, warning lampshade 55 is transparent organic glass cover, warning lampshade 55 is bonding with the lower surface of the upper plate 51 of the alarm lamp mounting hole 51-3 on upper plate 51 by its upper end, during installation, under warning lampshade (55) is backward by the 3rd O-ring seal (43) of seal assembly (4), pass the warning lampshade mounting hole (32) on chassis (3).
See Fig. 1, Fig. 2 and Fig. 3, the material of fume hood 6 is corrosion resistant plate.Fume hood 6 is made up of all-in-one-piece cover body 61 and base plate 62.Cover body 61 is the truncated cone-shaped plate body part of hollow, and the diameter of the upper port of cover body 61 is greater than the diameter of lower port.Cover body 61 is connected with the periphery one of base plate 62 by its lower end; Cover body 61 is provided with 4 to 30 oblique groove 61-1, and oblique groove 61-1 is used for sensing element and monitors.The upper end inwall of cover body 61 is provided with the internal thread installed and connect.
Preferred four-core Aviation Connector in outlet nozzle 7 the present embodiment.Outlet nozzle 7 passes in and out for the wire of circuit arrangement 8.
During installation, second O-ring seal 42 of the upper ends seal assembly 4 of the mount pad mounting hole 31 first on chassis 3 and respectively place a seal assembly 4 in the upper end of 2 warning lampshade mounting holes 32 the 3rd O-ring seal 43 after, mount pad 5 passed the mount pad mounting hole 31 on aforesaid chassis 3 from the top down by its fume hood connecting portion 52 and makes 2 warning lampshades 55 of mount pad 5 through after 2 warning lampshade mounting holes 32 on chassis 3, with 4 screws, mount pad 5 being fixed on the upper surface on chassis 3 by 4 mount pad fixing screw holes 35 on chassis 3; Outlet nozzle 7 successively through the outlet nozzle mounting hole 33 on chassis 3 and the outlet nozzle mounting hole of mount pad 5, is fixed on chassis 3 by the outlet nozzle fixing screw hole 33-1 on chassis 3 with 4 screws from bottom to top;
Gas-sensitive sensing element 81 and the photo electric sensitive element 82 of circuit arrangement 8 are all fixedly mounted on the sensing element installing plate 53 of mount pad 5, and are positioned at the below of sensing element installing plate 53; 2 alarm lamps 83 of circuit arrangement 8 are arranged in 2 warning lampshades 55 of mount pad 5 respectively; The circuit board 84 of circuit arrangement 8 is fixedly mounted on 4 circuit board mounting screw post 51-1 on the upper plate 51 of mount pad 5 by screw;
Fume hood 6 is screwed mutually by the external thread of the internal thread of its cover body 61 upper end with the fume hood connecting portion 52 of mount pad 5, and fume hood 6 is threaded with mount pad 5;
Upper cover 1 is connected with the upper surface on chassis 3 by the first O-ring seal 41 of seal assembly 4 by the lower surface of the bottom of the bottom 11-3 of its cover body 11; Platen 2 from the top of upper cover 1 down casing pressure be fastened on the bottom of bottom 11-3 of upper cover 1, after 5 attachment screw hole 34 one_to_one corresponding on 5 attachment screw hole 21-1 in the annular portion 21 of platen 2 and chassis 3, be fixedly connected with flat mouth screw, thus complete the installation of the mine intrinsic safety smoke transducer of the present embodiment.
See Fig. 7, the air-sensitive detectable signal treatment circuit 84-1 on the circuit board 84 of circuit arrangement 8 and photodetection signal processing circuit 84-2 is provided with signal input part and signal output part respectively; Single-chip microcomputer 84-3 is provided with the first signal input part, secondary signal input end and control signal output terminal; Alerting signal output circuit 84-4 is provided with control signal input end, alarm lamp lights control end and alarm signal output ends; Gas-sensitive sensing element 81 and the photosensitive sensor 82 of circuit arrangement 8 all have signal output part.
The signal input part of the air-sensitive detectable signal treatment circuit 84-1 of circuit arrangement 8 is electrically connected with the signal output part of gas-sensitive sensing element 81; The signal input part of photodetection signal processing circuit 84-2 is electrically connected with the signal output part of photosensitive sensor 82; First signal input part of single-chip microcomputer 84-3 is electrically connected with the signal output part of air-sensitive detectable signal treatment circuit 84-1; The secondary signal input end of single-chip microcomputer 84-3 is electrically connected with the signal output part of photodetection signal processing circuit 84-2; The control signal input end of alerting signal output circuit 84-4 is electrically connected with the control signal output terminal of single-chip microcomputer 84-3; The alarm lamp of alerting signal output circuit 84-4 is lighted control end and is electrically connected with the positive pole of 2 alarm lamps 83, the minus earth of alarm lamp 83; The alarm signal output ends of alerting signal output circuit 84-4 is exported from outlet nozzle 7 by wire.
In the present embodiment, the preferred model of gas-sensitive sensing element 81 of circuit arrangement 8 is the gas sensor of MQ2, and photo electric sensitive element 82 adopts to be made from the general labyrinth, photoelectricity darkroom of design and infrared emission receiving circuit; ; The model that single-chip microcomputer 84-3 preferably carries A/D translation function is the single-chip microcomputer of PIC2480; 2 alarm lamps 83 all preferably light emitting diode.
The principle of work of the mine intrinsic safety smoke transducer of the present embodiment and the course of work are as following:
The mine intrinsic safety smoke transducer of the present embodiment, it utilizes the feature of the insensitivity of photo electric sensitive element of the prior art to gas and the susceptibility to smog, and the susceptibility of gas-sensitive sensing element to gas and the insensitivity feature to dust, both are organically combined, makes the combined probe simultaneously with gas-sensitive sensing element 81 and photo electric sensitive element 82, the signal that wherein photo electric sensitive element 82 produces is transferred to single-chip microcomputer 84-3 and carries out gathering and be by single-chip microcomputer 84-3 process after digital quantity through analog/digital conversion after photodetection signal processing circuit 84-2 process, single-chip microcomputer 84-3 carries out corresponding judgement according to the power of photo electric sensitive element 82 collection signal to the concentration of ore deposit down-hole smoke, smokescope in gas-sensitive sensing element 81 pairs of environment detects, and signal is sent to single-chip microcomputer 84-3 by the voltage signal concentration of smog being reflected to Acquisition Circuit after air-sensitive detectable signal treatment circuit 84-1 process, single-chip microcomputer 84-3 carries out respective handling according to the signal received: single-chip microcomputer 84-3 compares judgement according to the alarming value whether having smog to occur of program setting in advance, when single-chip microcomputer 84-3 relatively after, when the signal of two-way input all exceedes preset value, single-chip microcomputer 84-3 is determined with hazardous fumes and occurs, now, single-chip microcomputer 84-3 is to alerting signal output circuit 84-4 output alarm signal, after alerting signal output circuit 84-4 processes signal, one road output alarm control signal lights 2 alarm lamps 83, the alerting signal receiving end that another road is exported to as mine safety control center carries out corresponding emergency processing.
The mine intrinsic safety smoke transducer of the present embodiment, by air-sensitive being detected smog and the combination of photodetection smog, overcome wrong report that in prior art, gas sensing property acquisition sensor causes because of the insensitivity to dust, fail to report and wrong report that photo electric acquisition sensor causes because of the insensitivity to gas, the defect failed to report, improve promptness and the accuracy of underground coal mine smog alarm significantly, thus improve the capability and qualification of coal mine downhole safety accident prevention significantly.
Simultaneously, the mine intrinsic safety smoke transducer of the present embodiment, by upper cover 1, pressing plate 2 and chassis 3 and the design that cooperatively interacts between other structures with install O-ring seal additional and be connected, and the oblique groove 61-1 that the cover body 61 of fume hood 6 is arranged, effectively can adapt to underground coal mine and drip from top and leak and the severe environment for use such as dust is many.
Above embodiment is the explanation to the specific embodiment of the present invention; but not limitation of the present invention; person skilled in the relevant technique without departing from the spirit and scope of the present invention; can also make various conversion and change and obtain corresponding equivalent technical scheme, therefore all equivalent technical schemes all should be included into scope of patent protection of the present invention.
Claims (6)
1. a mine intrinsic safety smoke transducer, is characterized in that: comprise upper cover (1), platen (2), chassis (3), seal assembly (4), mount pad (5), fume hood (6), outlet nozzle (7) and circuit arrangement (8); Described circuit arrangement (8) comprises gas-sensitive sensing element (81), photo electric sensitive element (82), alarm lamp (83) and circuit board (84); Circuit board (84) is provided with air-sensitive detectable signal treatment circuit (84-1), photodetection signal processing circuit (84-2), single-chip microcomputer (84-3) and alerting signal output circuit (84-4); Described seal assembly (4) comprises the first O-ring seal (41);
The gas-sensitive sensing element (81) of described circuit arrangement (8), photo electric sensitive element (82), alarm lamp (83) and circuit board (84) are all fixedly mounted on mount pad (5); Mount pad (5) and outlet nozzle (7) are fixedly mounted on chassis (3) respectively; The upper surface that upper cover (1) is fastened on chassis (3) covers the top of mount pad (5); Be fixedly connected with after being sealed by first O-ring seal (41) of seal assembly (4) with chassis (3) after platen (2) socket fastens the bottom of upper cover (1); Fume hood (6) is connected with the lower thread of mount pad (5);
Air-sensitive detectable signal treatment circuit (84-1) on the circuit board (84) of described circuit arrangement (8) and photodetection signal processing circuit (84-2) are provided with signal input part and signal output part respectively; Single-chip microcomputer (84-3) is provided with the first signal input part, secondary signal input end and control signal output terminal; Alerting signal output circuit (84-4) is provided with control signal input end, alarm lamp lights control end and alarm signal output ends; Gas-sensitive sensing element (81) and photo electric sensitive element (82) all have signal output part;
The signal input part of air-sensitive detectable signal treatment circuit (84-1) is electrically connected with the signal output part of gas-sensitive sensing element (81); The signal input part of photodetection signal processing circuit (84-2) is electrically connected with the signal output part of photo electric sensitive element (82); First signal input part of single-chip microcomputer (84-3) is electrically connected with the signal output part of air-sensitive detectable signal treatment circuit (84-1); The secondary signal input end of single-chip microcomputer (84-3) is electrically connected with the signal output part of photodetection signal processing circuit (84-2); The control signal input end of alerting signal output circuit (84-4) is electrically connected with the control signal output terminal of single-chip microcomputer (84-3); The alarm lamp of alerting signal output circuit (84-4) is lighted control end and is electrically connected with the positive pole of alarm lamp (83); The alarm signal output ends of alerting signal output circuit (84-4) is exported from outlet nozzle (7) by wire;
Described single-chip microcomputer (84-3) receives the 2 road signals that photo electric sensitive element (82) and gas-sensitive sensing element (81) gather, the alarming value whether having smog to occur according to program setting in advance compares judgement, when single-chip microcomputer (84-3) relatively after, when the signal of two-way input all exceedes preset value, single-chip microcomputer (84-3) is determined with hazardous fumes and occurs.
2. mine intrinsic safety smoke transducer according to claim 1, is characterized in that: described upper cover (1) comprises cover body (11), hasp (12) and peg (13); Cover body (11) comprises the top board (11-1) of integral connection, cylinder part (11-2) and bottom (11-3); Top board (11-1) is horizontally disposed plate body part; The cylindrical plate body part that cylinder part (11-2) is hollow; (11-3) is integrally made up of curved portions and bottom in bottom, and the lower horizontal of bottom outwards opens, and bottom (11-3) is connected with the lower end one of cylinder part (11-2) by the upper end of its curved portions; Cylinder part (11-2) is connected with top board (11-1) one by its upper end; Hasp (12) is provided with identical 2, and 2 hasp (12) point left and right are weldingly fixed on the upper surface of top board (11-1) of cover body (11); The two ends of peg (13) are fixed in 2 hasps (12) movably.
3. mine intrinsic safety smoke transducer according to claim 2, is characterized in that: described platen (2) comprises annular portion (21) and shirt rim (22) of integral connection; The annular portion (21) of platen (2) is annular plate body part, and be positioned at top, the diameter of the middle circular hole of annular portion (21), slightly larger than the external diameter of the cylinder part (11-2) of the cover body (11) of upper cover (1), is less than the external diameter of the bottom of the bottom (11-3) of cover body (11); The oblate cylindricality plate body part that the shirt rim (22) of platen (2) is hollow, shirt rim (22) are connected with the periphery one of annular portion (21) with its upper end; The annular portion (21) of platen (2) is evenly provided with 5 attachment screw holes (21-1) of up/down perforation according to annulus surrounding.
4. mine intrinsic safety smoke transducer according to claim 3, is characterized in that: described chassis (3) is circular plate body part; The internal diameter of the external diameter on chassis (3) and the shirt rim (22) of platen (2) adapts; Chassis (3) is provided with mount pad mounting hole (31), warning lampshade mounting hole (32), outlet nozzle mounting hole (33), outlet nozzle fixing screw hole (33-1), attachment screw hole (34) and mount pad fixing screw hole (35); Mount pad mounting hole (31) is arranged on the center of chassis (3); Warning lampshade mounting hole (32) is provided with 2, the left and right that 2 warning lampshade mounting holes (32) are symmetricly set on chassis (3) to axis on, and be divided into the both sides, front and back of mount pad mounting hole (31); Outlet nozzle mounting hole (33) is arranged on the left side on the sagittal axis on chassis (3); Outlet nozzle fixing screw hole (33-1) is provided with 4, and 4 outlet nozzle fixing screw holes (33-1) are symmetricly set on the surrounding of outlet nozzle mounting hole (33); Attachment screw hole (34) is provided with 5, and 5 attachment screw holes (34) are uniformly set on the periphery on chassis 3; Mount pad fixing screw hole (35) is provided with 4 altogether, 2 warning lampshade mounting holes (32) each side arrange 1.
5. mine intrinsic safety smoke transducer according to claim 4, is characterized in that: described seal assembly (4) also comprises the second O-ring seal (42), the 3rd O-ring seal (43) and sensing element wire guide sealing gasket (44); 3rd O-ring seal (43) is provided with 2;
Described mount pad (5) comprises upper plate (51), fume hood connecting portion (52), sensing element installing plate (53), wire guide sealing gasket pressing plate (54) and warning lampshade (55);
Described upper plate (51) is for left and right is to horizontally disposed round plastic plate body part, and upper plate (51) is provided with circuit board mounting screw post (51-1), sensing element wire guide (51-2), alarm lamp mounting hole (51-3) and outlet nozzle mounting hole; Circuit board mounting screw post (51-1) is provided with 4 altogether and upper surface by upper plate (51) raises up, and is arranged on the left side of upper plate (51) before and after 2 circuit board mounting screw posts (51-1) wherein point; Other 2 circuit board mounting screw posts (51-1) point front and back are arranged on the middle part, right side of upper plate (51); Sensing element wire guide (51-2) is arranged on the centre of upper plate (51); The left and right that alarm lamp mounting hole (51-3) is arranged on upper plate (51) to axis on both sides, front and back; The right cylinder that fume hood connecting portion (52) is hollow, the internal diameter of the mount pad mounting hole (31) of its external diameter and described chassis (3) adapts; The outer wall of fume hood connecting portion (52) is provided with the external thread connected; Fume hood connecting portion (52) is connected with the lower surface of upper plate (51) is integral by its upper surface; Sensing element installing plate (53) is fixedly mounted on the lower surface of the upper plate (51) in fume hood connecting portion (52) encirclement; Wire guide sealing gasket pressing plate (54) is arranged on the top of the sensing element wire guide (51-2) of upper plate (51); The sensing element wire guide sealing gasket (44) that seal assembly (4) pushed down by wire guide sealing gasket pressing plate (54) is fixedly connected with upper plate (51) afterwards; Warning lampshade (55) is provided with 2, warning lampshade (55) is bonding with the lower surface of the upper plate (51) of the alarm lamp mounting hole (51-3) on upper plate (51) by its upper end, passes the warning lampshade mounting hole (32) on chassis (3) under warning lampshade (55) is backward by the 3rd O-ring seal (43) of seal assembly (4).
6. mine intrinsic safety smoke transducer according to claim 5, is characterized in that: described fume hood (6) comprises cover body (61) and the base plate (62) of integral connection; The truncated cone-shaped plate body part that cover body (61) is hollow, and the diameter of the upper port of cover body (61) is greater than the diameter of lower port; Cover body (61) is connected with the periphery one of base plate (62) by its lower end; Cover body (61) is provided with 4 to 30 oblique grooves (61-1); The upper end inwall of cover body (61) is provided with the internal thread installed and connect.
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| CN201310019204.5A CN103207147B (en) | 2013-01-18 | 2013-01-18 | Mine intrinsic safety smoke transducer |
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| CN201310019204.5A CN103207147B (en) | 2013-01-18 | 2013-01-18 | Mine intrinsic safety smoke transducer |
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| CN103207147B true CN103207147B (en) | 2015-09-02 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2881920B1 (en) * | 2013-12-09 | 2016-11-30 | Siemens Schweiz AG | Smoke-detection assembly including redundant detectors |
| CN108362619A (en) * | 2018-04-23 | 2018-08-03 | 成都瑞欣沥青科技有限公司 | A kind of smog recorder measuring intermittent mixing building bitumen concrete smokescope |
| CN110047242B (en) * | 2019-06-04 | 2021-09-10 | 宿州中矿三杰科技有限公司 | Smoke sensor for mine |
| CN110702854A (en) * | 2019-09-19 | 2020-01-17 | 武汉慧联无限科技有限公司 | Smoke sensor |
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