CN205319088U

CN205319088U - Explosion -proof panel switch

Info

Publication number: CN205319088U
Application number: CN201620114539.4U
Authority: CN
Inventors: 丁力; 曾伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-27
Filing date: 2016-01-27
Publication date: 2016-06-15
Anticipated expiration: 2026-01-27

Abstract

The utility model provides an explosion -proof panel switch, by last casing, the operation button, moving magnet piece alive, the iron sheet, lower casing, the tongue tube, the fixed magnets piece, voltage stabilizing circuit, gas detection circuit and warning circuit constitute, the operation button is installed in the square opening in the middle part of last casing, the rear side upper portion at the operation button is installed to the moving magnet piece of living, the rear side lower part at the operation button is installed to the iron sheet, the tongue tube is installed in the recess of inferior valve internal middle part, the fixed magnets piece is installed in the internal lower part of inferior valve, voltage stabilizing circuit, the gas detection circuit, warning circuit installs and passes through the wire connection on inferior valve internal upper portion and with the tongue tube, to go up the casing installs under on the casing. This is novel when taking place the gas at home and leaking, and warning circuit can send sound, the user is indicateed to light, can prevent to produce electric arc when pressing the operation button and light the gas of leaking, can also prevent the contact failure that contacts, and can conveniently change the tongue tube of damage. Based on above characteristics, so have good application prospect.

Description

A kind of anti-explosion panel power switch

Technical field

The utility model relates to power switch, when there is gas leaking especially at home, can send loud buzzer and red warning light is reminded in user family gas leaking is occurred, to cause user to note, need to turn on light user, after pressing the operation push-button in the middle of upper housing with hand, by the magnetic reactive force of flat thin magnet, the normally opened contact of dry-reed tube glass shell inside is connected, electric light obtains electroluminescence, owing to the inner normally opened contact of dry-reed tube is connected by flat thin magnet magnetic reactive force, dry-reed tube inner contact is sealed in glass shell, prevent general panels power switch when gas leaking, after pressing panel power switch key, the moment of inner power contact contact produces electric arc, thus ignite and leak the shortcoming of combustion gas, in use owing to the inner normally opened contact of dry-reed tube is connected by flat thin magnet magnetic reactive force, the inner normally opened contact of dry-reed tube and air completely cut off, the inner normally opened contact of dry-reed tube can be prevented because of mechanical deformation, or the loose contact caused is affected by dust in air and atmospheric oxidation, dry-reed tube is arranged separately in lower housing inside, can be convenient for changing during damage, prevent general panels power switch, power contact can not be changed after damaging, whole panel power switch can be caused to scrap a kind of anti-explosion panel power switch of drawback.

Background technology

At present, known general panels power switch, only there is the function of shutoff or opening power, its inner power contact does not have and air completely cuts off, in use, combustible gas leakage is there is in main, the ignorant need of user are turned on light when opening panel power switch, the electric arc that power contact contact produces instantaneously easily lights the inflammable gas of leakage, thus cause irremediable personal injury, moreover, existing its power contact of panel power switch is mechanical contact character, duration of service is long afterwards, because of mechanical deformation or can affect by dust in air and atmospheric oxidation and cause loose contact, when power contact damages, power contact can not be convenient for changing, whole panel power switch can be caused to scrap.

Practical novel content

In order to overcome existing general panels power switch, only there is the function of shutoff or opening power, its power contact does not have and air completely cuts off, in use, combustible gas leakage is there is in main, the ignorant need of user are turned on light when turning on the power switch, the electric arc that power contact contact produces instantaneously easily lights the inflammable gas of leakage, cause irremediable personal injury, and existing its power contact of panel power switch is mechanical contact character, duration of service is long afterwards, because of mechanical deformation or can affect by dust in air and atmospheric oxidation and cause loose contact, when power contact damages, power contact can not be convenient for changing, the drawback that whole power switch is scrapped can be caused, the utility model provides one when there is gas leaking at home, can send loud buzzer and red warning light is reminded in user family gas leaking is occurred, to cause user to note, need to turn on light user, after pressing the operation push-button in the middle of upper housing with hand, by the magnetic reactive force of flat thin magnet, the normally opened contact of dry-reed tube glass shell inside is connected, electric light obtains electroluminescence, owing to the inner normally opened contact of dry-reed tube is connected by flat thin magnet magnetic reactive force, dry-reed tube inner contact is sealed in glass shell, prevent general panels power switch when gas leaking, after pressing panel power switch key, the moment of inner power contact contact produces electric arc, thus ignite and leak the shortcoming of combustion gas, in use owing to the inner normally opened contact of dry-reed tube is connected by flat thin magnet magnetic reactive force, the inner normally opened contact of dry-reed tube and air completely cut off, the inner normally opened contact of dry-reed tube can be prevented because of mechanical deformation, or the loose contact caused is affected by dust in air and atmospheric oxidation, dry-reed tube is arranged separately in lower housing inside, can be convenient for changing during damage, prevent general panels power switch, power contact can not be changed after damaging, whole panel power switch can be caused to scrap a kind of anti-explosion panel power switch of drawback.

The utility model solves the technical scheme that its technical problem adopts:

A kind of anti-explosion panel power switch, it is characterized in that by upper housing, operation push-button, movable magnet sheet, iron sheet, lower housing, dry-reed tube, fixed magnet sheet, voltage stabilizing circuit, gas detection circuit and warning circuit are formed, front upper left part at upper housing has four round holes, a round hole is each side had in the front portion of upper housing, a square aperture is had at upper housing front middle part, operation push-button is arranged in the middle part square aperture of upper housing, movable magnet sheet is permanent magnet, movable magnet sheet is arranged on the rear upper lateral part of operation push-button, iron sheet is arranged on the rear side lower part of operation push-button, in lower housing, there is a groove at middle part, each side there is silk seat in the inside of lower housing, dry-reed tube is arranged in lower housing in central slot, after dry-reed tube installs, the action contact of dry-reed tube is positioned at lower housing central slot rear end, the rest contact of dry-reed tube is positioned at lower housing central slot front end, fixed magnet sheet is permanent magnet, fixed magnet sheet is arranged in lower housing bottom, voltage stabilizing circuit, gas detection circuit and warning circuit are arranged on lower housing internal upper part, the perforate of the anterior left and right sides of upper housing is directed at silk seat in the left and right sides, lower housing inside respectively, screw in the inner left and right sides of lower housing in silk seat through the perforate of the anterior left and right sides of upper housing respectively with two screw rods, upper housing is arranged on lower housing, after all devices install, when pressing the upper end, front side of operation push-button with hand, the movable magnet sheet magnetic effort being arranged on upper lateral part after operation push-button is in dry-reed tube internal actions contact, dry-reed tube internal actions contact and rest contact are connected, and the lower end of operation push-button can not be moved in the absence of external forces backward, when pressing the lower end in the front side of operation push-button with hand, the iron sheet and the fixed magnet sheet that are arranged on side lower part after operation push-button are close, the magnetic effort of fixed magnet sheet is in iron sheet, operation push-button upper end can not be moved in the absence of external forces backward, voltage stabilizing circuit two power inputs are connected by wire with 220V AC power the two poles of the earth respectively, voltage stabilizing circuit anode power output end and gas detection circuit anode power input, warning circuit anode power input is connected by wire, gas detection circuit negative power supply output terminal and warning circuit negative power supply input terminus are connected by wire, voltage stabilizing circuit negative power supply output terminal and gas detection circuit negative power supply input terminus are by wire ground connection, a wherein pole at dry-reed tube one end and 220V AC power the two poles of the earth is connected by wire.

Described voltage stabilizing circuit is by power switch, supply transformer, silicon rectifier diode, chemical capacitor, the fixing output voltage stabilizer of three ends and ceramics electric capacity composition, silicon rectifier diode has four, ceramics electric capacity has two, the fixing output voltage stabilizer model of three ends is 7805, a wherein pole at supply transformer armature winding one end and 220V AC power the two poles of the earth is connected by wire, another pole at power switch one end and 220V AC power the two poles of the earth is connected by wire, the power switch the other end and the supply transformer armature winding the other end are connected by wire, supply transformer secondary winding is one end and first silicon rectifier diode negative pole wherein, 2nd silicon rectifier diode positive pole is connected by wire, the supply transformer secondary winding the other end and the 3rd silicon rectifier diode negative pole, 4th silicon rectifier diode positive pole is connected by wire, 2nd silicon rectifier diode negative pole and the 4th silicon rectifier diode negative pole, chemical capacitor positive pole, first ceramics electric capacity one end, cathode power supply input terminus 1 pin of the fixing output voltage stabilizer of three ends is connected by wire, first silicon rectifier diode positive pole and the 3rd silicon rectifier diode positive pole, chemical capacitor negative pole, first ceramics electric capacity the other end, negative power supply input terminus 2 pin of the fixing output voltage stabilizer of three ends, 2nd ceramics electric capacity one end is by wire ground connection, cathode power supply output terminal 3 pin and the 2nd the ceramics electric capacity the other end of the fixing output voltage stabilizer of three ends are connected by wire, when voltage stabilizing circuit is arranged on lower housing internal upper part, the operation handle arm of power switch is positioned on upper housing left part first round hole outside, it is beneficial to from upper housing external opening or powered-down switch.

Described gas detection electricity routing resistance, gas sensitive device, adjustable resistance and one-way SCR composition, gas sensitive device model is QM-N5, resistance one end and gas sensitive device first cathode power supply input terminus 2 pin are connected by wire, adjustable resistance one end and one-way SCR negative electrode, gas sensitive device negative power supply input terminus 4 pin is by wire ground connection, the adjustable resistance the other end and gas sensitive device control power output end 3 pin are connected by wire, adjustable resistance slide contact power output end and one-way SCR control pole are connected by wire, the resistance the other end and gas sensitive device the 2nd cathode power supply input terminus 1 pin are connected by wire, when gas detection circuit installs lower housing internal upper part, the front end of gas sensitive device is positioned on upper housing left part the 2nd round hole outside, it is beneficial to the inflammable gas of detecting leakage.

Described warning circuit is by integrated alarm circuit, hummer, resistance and photodiode composition, integrated alarm circuit model is CH100, cathode power supply input terminus 4 pin and resistance one end of integrated alarm circuit are connected by wire, negative power supply input terminus 2 pin of integrated alarm circuit and photodiode negative pole are by wire ground connection, the audio frequency of integrated alarm circuit exports two ends 1 pin, by arriving, wire connects 3 pin with hummer two ends respectively, the resistance the other end and photodiode positive pole are connected by wire, when warning circuit installs lower housing internal upper part, the front end of hummer is positioned on upper housing left part the 3rd round hole outside, it is beneficial to the sound that hummer sends outwards spread out of, the front end of photodiode is positioned on upper housing left part the 4th round hole outside, it is beneficial to from upper housing front outer end viewing lumination of light emitting diode situation.

Before the utility model uses, the one end that need to control electric light is connected by wire and the dry-reed tube the other end, and another pole of the other end and 220V AC power the two poles of the earth that need to control electric light is connected by wire. In use, when there is gas leaking in main, the gas sensitive device of gas detection circuit can detect, under the effect of gas detection circuit, the photodiode of warning circuit can send red light, the hummer of warning circuit can send loud buzzer, remind in user family together and have gas leaking, it is noted that safety; When user need to open the upper end that electric light hand presses operation push-button, after being arranged on operation push-button, the movable magnet sheet magnetic reactive force of upper lateral part can make dry-reed tube internal actions contact and rest contact connect, so, electric light obtains electroluminescence; Due to, this is novel when gas leaking, by acousto-optic hint user, the action contact of dry-reed tube and rest contact are sealed in the glass shell of dry-reed tube, can prevent from producing electric arc during action contact and the rest contact connection of dry-reed tube the combustion gas of leakage to be lighted, can also prevent action contact and the rest contact of dry-reed tube from affecting the loose contact caused by dust in air and atmospheric oxidation, dry-reed tube is arranged separately in lower housing inside, can be convenient for changing during damage, so, based on above feature, the application prospect that the utility model has had.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is described further.

Fig. 1 is the structural representation of the utility model upper housing, operation push-button.

Fig. 2 is the structural representation of the utility model lower housing, dry-reed tube, fixed magnet sheet, voltage stabilizing circuit, gas detection circuit and warning circuit.

Fig. 3 is the schematic circuit between the utility model movable magnet sheet, dry-reed tube, voltage stabilizing circuit, gas detection circuit, warning circuit and electric light.

Embodiment

By Fig. 1, shown in Fig. 2, a kind of anti-explosion panel power switch, by upper housing 101, operation push-button 102, movable magnet sheet, iron sheet, lower housing 201, dry-reed tube 202, fixed magnet sheet 203, voltage stabilizing circuit 204, gas detection circuit 205 and warning circuit 206 are formed, front upper left part at upper housing 101 has four round hole 101-1, 102-2, 103-3, 104-4, a round hole 101-6 is each side had in the front portion of upper housing, 101-7, a square aperture 101-5 is had at upper housing 101 front middle part, operation push-button 102 is arranged in the middle part square aperture 101-5 of upper housing 101, movable magnet sheet is permanent magnet, movable magnet sheet is arranged on the rear upper lateral part of operation push-button 102, iron sheet is arranged on the rear side lower part of operation push-button 102, in lower housing 201, there is a groove 201-1 at middle part, each side there is silk seat 201-2 in the inside of lower housing, 201-3, dry-reed tube 202 is arranged in lower housing 201 in central slot 201-1, after dry-reed tube 202 installs, the action contact of dry-reed tube 202 is positioned at lower housing 201 central slot 201-1 rear end, the rest contact of dry-reed tube 202 is positioned at lower housing 201 central slot 202-1 front end, fixed magnet sheet 203 is permanent magnet, fixed magnet sheet 203 is arranged on bottom in lower housing 201, voltage stabilizing circuit 204, gas detection circuit 205 and warning circuit 206 are arranged on lower housing 201 internal upper part, the perforate 101-6 of the anterior left and right sides of upper housing 101, 101-7 respectively with silk seat 201-2 in the left and right sides, lower housing inside, 201-3 is directed at, with two screw rods respectively through the perforate 101-6 of the anterior left and right sides of upper housing, 101-7 screws in the interior silk seat 201-2 of the inner left and right sides of lower housing, in 201-3, upper housing 101 is arranged on lower housing 201, after all devices install, when pressing the upper end, front side of operation push-button 102 with hand, the movable magnet sheet magnetic effort being arranged on the rear upper lateral part of operation push-button 102 is in dry-reed tube 202 internal actions contact, dry-reed tube 202 internal actions contact and rest contact are connected, and operation push-button 102 times ends can not be moved in the absence of external forces backward, when pressing the lower end in the front side of operation push-button 102 with hand, the iron sheet and the fixed magnet sheet 203 that are arranged on the rear side lower part of operation push-button 102 are close, the magnetic effort of fixed magnet sheet 203 is in iron sheet, operation push-button 102 upper end can not be moved in the absence of external forces backward, voltage stabilizing circuit 204 two power inputs are connected by wire with 220V AC power the two poles of the earth respectively, voltage stabilizing circuit 204 cathode power supply output terminal and gas detection circuit 205 cathode power supply input terminus, warning circuit 206 cathode power supply input terminus is connected by wire, gas detection circuit 205 negative power supply output terminal and warning circuit 206 negative power supply input terminus are connected by wire, voltage stabilizing circuit 204 negative power supply output terminal and gas detection circuit 205 negative power supply input terminus are by wire ground connection, a wherein pole at dry-reed tube 202 one end and 220V AC power the two poles of the earth is connected by wire. before the utility model uses, the one end that need to control electric light is connected by wire and dry-reed tube 202 the other end, and another pole of the other end and 220V AC power the two poles of the earth that need to control electric light is connected by wire. in voltage stabilizing circuit 204: after 220V AC power is input to voltage stabilizing circuit 204 power input, under the inner circuit effect of voltage stabilizing circuit 204, the 5V direct supply of voltage stabilizing circuit 204 power output end meeting stable output enters gas detection circuit 205 power input, so, gas detection circuit 205 obtains electric in running order.In gas detection circuit 205: gas detection circuit 205 electric in running order after, when having gas leaking in main, the gas sensitive device of gas detection circuit 205 can detect, and under the effect of the inner circuit of gas detection circuit 205, warning circuit 206 can obtain electric work. In warning circuit 206: after warning circuit 206 obtains electric work, the photodiode of warning circuit 206 can send loud buzzer by hummer luminous, warning circuit 206, and reminding in user family together has gas leaking, it is noted that safety. Need to turn on light as user the upper end pressing operation push-button 102 with hand time, after being arranged on operation push-button 102, the movable magnet sheet of upper lateral part moves backward, its magnetic reactive force can make dry-reed tube 202 internal actions contact and rest contact connect, due to, a wherein pole at dry-reed tube 202 one end and 220V AC power the two poles of the earth is connected by wire, the one end that need to control electric light is connected by wire and dry-reed tube 202 the other end, another pole of the other end and 220V AC power the two poles of the earth that need to control electric light is connected by wire, so, now electric light can obtain electroluminescence. In use, when dry-reed tube 202 damages, the dry-reed tube 202 damaged is taken out from central slot 201-1 in lower housing 201, changes new dry-reed tube. Due to, this is novel when gas leaking, by warning circuit 206 acousto-optic hint user, the action contact of dry-reed tube 202 and rest contact are sealed in the glass shell of dry-reed tube 202, can prevent from producing electric arc during action contact and the rest contact connection of dry-reed tube 202 combustion gas of leakage to be lighted, can also prevent action contact and the rest contact of dry-reed tube 202 from affecting the loose contact caused by dust in air and atmospheric oxidation, it is inner that dry-reed tube 202 is arranged separately in lower housing 201, can be convenient for changing during damage, so, the application prospect having had.

Shown in Fig. 3, CT to be movable magnet sheet, GH be dry-reed tube, H are electric lights. by power switch K, supply transformer T, silicon rectifier diode VD1, VD2, VD3, VD4, chemical capacitor C1, three ends fix output voltage stabilizer A1 and ceramics electric capacity C2, C3 forms voltage stabilizing circuit, silicon rectifier diode has four, ceramics electric capacity has two, the fixing output voltage stabilizer A1 model of three ends is 7805, a wherein pole at supply transformer T armature winding one end and 220V AC power the two poles of the earth is connected by wire, another pole at power switch K one end and 220V AC power the two poles of the earth is connected by wire, the power switch K the other end and the supply transformer T armature winding the other end are connected by wire, supply transformer T secondary winding is one end and first silicon rectifier diode VD1 negative pole wherein, 2nd silicon rectifier diode VD2 positive pole is connected by wire, the supply transformer T secondary winding the other end and the 3rd silicon rectifier diode VD3 negative pole, 4th silicon rectifier diode VD4 positive pole is connected by wire, 2nd silicon rectifier diode VD2 negative pole and the 4th silicon rectifier diode VD4 negative pole, chemical capacitor C1 positive pole, first ceramics electric capacity C2 one end, cathode power supply input terminus 1 pin of the fixing output voltage stabilizer A1 of three ends is connected by wire, first silicon rectifier diode VD1 positive pole and the 3rd silicon rectifier diode VD3 positive pole, chemical capacitor C1 negative pole, first ceramics electric capacity C2 the other end, negative power supply input terminus 2 pin of the fixing output voltage stabilizer A1 of three ends, 2nd ceramics electric capacity C3 one end is by wire ground connection, cathode power supply output terminal 3 pin and the 2nd the ceramics electric capacity C3 the other end of the fixing output voltage stabilizer A1 of three ends are connected by wire, when voltage stabilizing circuit is arranged on lower housing internal upper part, the operation handle arm of power switch K is positioned on upper housing left part first round hole outside, it is beneficial to from upper housing external opening or powered-down K switch.By resistance R1, gas sensitive device TT, adjustable resistance RP and one-way SCR VS forms gas detection circuit, gas sensitive device TT model is QM-N5, resistance R1 one end and gas sensitive device TT first cathode power supply input terminus 2 pin are connected by wire, adjustable resistance RP one end and one-way SCR VS negative electrode, gas sensitive device TT negative power supply input terminus 4 pin is by wire ground connection, the adjustable resistance RP the other end and gas sensitive device TT are controlled power output end 3 pin and are connected by wire, adjustable resistance RP slide contact power output end and one-way SCR VS are controlled pole and are connected by wire, the resistance R1 the other end and gas sensitive device TT the 2nd cathode power supply input terminus 1 pin are connected by wire, when gas detection circuit installs lower housing internal upper part, the front end of gas sensitive device TT is positioned on upper housing left part the 2nd round hole outside, it is beneficial to the inflammable gas of detecting leakage. by integrated alarm circuit A2, hummer B, resistance R2 and photodiode VL forms warning circuit, integrated alarm circuit A2 model is CH100, cathode power supply input terminus 4 pin and resistance R2 one end of integrated alarm circuit A2 are connected by wire, negative power supply input terminus 2 pin of integrated alarm circuit A2 and photodiode VL negative pole are by wire ground connection, the audio frequency of integrated alarm circuit A2 exports two ends 1 pin, by arriving, wire connects 3 pin with hummer B two ends respectively, the resistance R2 the other end and photodiode VL positive pole are connected by wire, when warning circuit installs lower housing internal upper part, the front end of hummer B is positioned on upper housing left part the 3rd round hole outside, it is beneficial to the sound that hummer B sends outwards spread out of, the front end of photodiode VL is positioned on upper housing left part the 4th round hole outside, it is beneficial to from the upper housing front outer end viewing luminous situation of photodiode VL. voltage stabilizing circuit two power input power switch K one end, supply transformer T armature winding one end is connected by wire with 220V AC power the two poles of the earth respectively, 3 pin of the fixing output voltage stabilizer A1 of voltage stabilizing circuit anode power output end three end and the gas detection circuit anode power input resistance R1 the other end, 4 pin of warning circuit anode power input integrated alarm circuit A2 are connected by wire, 2 pin of gas detection circuit negative power supply output terminal one-way SCR VS anode and warning circuit negative power supply input terminus integrated alarm circuit A2 are connected by wire, fixing 2 pin of output voltage stabilizer A1 of voltage stabilizing circuit negative power supply output terminal three end and 4 pin of gas detection circuit negative power supply input terminus gas sensitive device TT are by wire ground connection, a wherein pole at dry-reed tube GH one end and 220V AC power the two poles of the earth is connected by wire. before the utility model uses, the one end that need to control electric light H is connected by wire and the dry-reed tube GH the other end, and another pole of the other end and 220V AC power the two poles of the earth that need to control electric light H is connected by wire. in voltage stabilizing circuit: after 220V AC power inputs, 220V AC power drops to 12V AC power in the effect of supply transformer T, and 12V AC power is converted to direct supply through silicon rectifier diode VD1, VD2, VD3, VD4 rectification, chemical capacitor C1 filtering, through the filtered direct supply of chemical capacitor C1, after entering the fixing output voltage stabilizer A1 of three ends and peripheral components ceramics electric capacity C2, C3, from the 5V direct supply of the 3rd pin stable output of the fixing output voltage stabilizer A1 of three ends, the effect of ceramics electric capacity C2 is the ripple characteristics improving power supply, and the effect of ceramics electric capacity C3 is the transient state response improving load,5V direct supply enters gas detection circuit and warning circuit power input terminus, so, gas detection circuit and warning circuit obtain and electric are in standby state. In gas detection circuit and warning circuit: after gas detection circuit obtains electric work, when there is no gas leaking in main, between 1 pin of gas sensitive device TT and 3 pin, electric conductivity is very little, the voltage that adjustable resistance RP slide contact exports is less than 0.7V, lower than the starting voltage of one-way SCR VS, one-way SCR VS is not triggered; When having gas leaking in main, between 1 pin of gas sensitive device TT and 3 pin, electric conductivity increases rapidly, one-way SCR VS is triggered, then, integrated alarm circuit A2 negative power supply input terminus obtains electric, audio output 1 pin of integrated alarm circuit A2 and 3 pin output audio signals, hummer B sends loud buzzer; Hummer B obtain electric send loud buzzer while, photodiode VL can obtain buzzer that electroluminescence sends with hummer B together with point out user family have gas leaking, it is noted that safety. When user need to turn on the upper end that electric light H hand presses operation push-button, after being arranged on operation push-button, the movable magnet sheet CT of upper lateral part moves backward, its magnetic reactive force can make dry-reed tube GH internal actions contact and rest contact connect, due to, a wherein pole at dry-reed tube GH one end and 220V AC power the two poles of the earth is connected by wire, the one end that need to control electric light H is connected by wire and the dry-reed tube GH the other end, another pole of the other end and 220V AC power the two poles of the earth that need to control electric light H is connected by wire, so, now electric light H can obtain electroluminescence. In use, when dry-reed tube GH damages, the dry-reed tube GH damaged is taken out from central slot in lower housing, changes new dry-reed tube. Due to, this is novel when gas leaking, by warning circuit acousto-optic hint user, the action contact of dry-reed tube GH and rest contact are sealed in the glass shell of dry-reed tube GH, can prevent from producing electric arc during action contact and the rest contact connection of dry-reed tube GH the combustion gas of leakage to be lighted, can also prevent action contact and the rest contact of dry-reed tube GH from affecting the loose contact caused by dust in air and atmospheric oxidation, dry-reed tube GH is arranged separately in lower housing inside, can be convenient for changing during damage, so, the application prospect having had.

In Fig. 3, dry-reed tube GH adopts JAG-3 type glass shell normally opened contact type dry-reed tube. In voltage stabilizing circuit: power switch K adopts and stirs power switch, T-shaped number of supply transformer is 220V/12V/3W, silicon rectifier diode VD1, VD2, VD3, VD4 model is 1N4001, chemical capacitor C1 specification is 470UF/25V, and ceramics electric capacity C2 specification is 0.33UF, ceramics electric capacity C3 specification is 0.1UF. In gas detection circuit: resistance R1 resistance is 10 Ω, gas sensitive device TT model is QM-N5, and adjustable resistance RP specification is 4.7K, and one-way SCR VS model is MCR100-6. In warning circuit: hummer Type B number is HTD27A-1, resistance R2 resistance is 1K, and photodiode VL is red light emitting diodes, and working current is 10mA.

Claims

1. an anti-explosion panel power switch, it is characterized in that by upper housing, operation push-button, movable magnet sheet, iron sheet, lower housing, dry-reed tube, fixed magnet sheet, voltage stabilizing circuit, gas detection circuit and warning circuit are formed, front upper left part at upper housing has four round holes, a round hole is each side had in the front portion of upper housing, a square aperture is had at upper housing front middle part, operation push-button is arranged in the middle part square aperture of upper housing, movable magnet sheet is permanent magnet, movable magnet sheet is arranged on the rear upper lateral part of operation push-button, iron sheet is arranged on the rear side lower part of operation push-button, in lower housing, there is a groove at middle part, each side there is silk seat in the inside of lower housing, dry-reed tube is arranged in lower housing in central slot, after dry-reed tube installs, the action contact of dry-reed tube is positioned at lower housing central slot rear end, the rest contact of dry-reed tube is positioned at lower housing central slot front end, fixed magnet sheet is permanent magnet, fixed magnet sheet is arranged in lower housing bottom, voltage stabilizing circuit, gas detection circuit and warning circuit are arranged on lower housing internal upper part, the perforate of the anterior left and right sides of upper housing is directed at silk seat in the left and right sides, lower housing inside respectively, screw in the inner left and right sides of lower housing in silk seat through the perforate of the anterior left and right sides of upper housing respectively with two screw rods, upper housing is arranged on lower housing, after all devices install, when pressing the upper end, front side of operation push-button with hand, the movable magnet sheet magnetic effort being arranged on upper lateral part after operation push-button is in dry-reed tube internal actions contact, dry-reed tube internal actions contact and rest contact are connected, and the lower end of operation push-button can not be moved in the absence of external forces backward, when pressing the lower end in the front side of operation push-button with hand, the iron sheet and the fixed magnet sheet that are arranged on side lower part after operation push-button are close, the magnetic effort of fixed magnet sheet is in iron sheet, operation push-button upper end can not be moved in the absence of external forces backward, voltage stabilizing circuit two power inputs are connected by wire with 220V AC power the two poles of the earth respectively, voltage stabilizing circuit anode power output end and gas detection circuit anode power input, warning circuit anode power input is connected by wire, gas detection circuit negative power supply output terminal and warning circuit negative power supply input terminus are connected by wire, voltage stabilizing circuit negative power supply output terminal and gas detection circuit negative power supply input terminus are by wire ground connection, a wherein pole at dry-reed tube one end and 220V AC power the two poles of the earth is connected by wire.

2. a kind of anti-explosion panel power switch according to claim 1, it is characterized in that voltage stabilizing circuit is by power switch, supply transformer, silicon rectifier diode, chemical capacitor, the fixing output voltage stabilizer of three ends and ceramics electric capacity composition, silicon rectifier diode has four, ceramics electric capacity has two, the fixing output voltage stabilizer model of three ends is 7805, a wherein pole at supply transformer armature winding one end and 220V AC power the two poles of the earth is connected by wire, another pole at power switch one end and 220V AC power the two poles of the earth is connected by wire, the power switch the other end and the supply transformer armature winding the other end are connected by wire, supply transformer secondary winding is one end and first silicon rectifier diode negative pole wherein, 2nd silicon rectifier diode positive pole is connected by wire, the supply transformer secondary winding the other end and the 3rd silicon rectifier diode negative pole, 4th silicon rectifier diode positive pole is connected by wire, 2nd silicon rectifier diode negative pole and the 4th silicon rectifier diode negative pole, chemical capacitor positive pole, first ceramics electric capacity one end, cathode power supply input terminus 1 pin of the fixing output voltage stabilizer of three ends is connected by wire, first silicon rectifier diode positive pole and the 3rd silicon rectifier diode positive pole, chemical capacitor negative pole, first ceramics electric capacity the other end, negative power supply input terminus 2 pin of the fixing output voltage stabilizer of three ends, 2nd ceramics electric capacity one end is by wire ground connection, cathode power supply output terminal 3 pin and the 2nd the ceramics electric capacity the other end of the fixing output voltage stabilizer of three ends are connected by wire, when voltage stabilizing circuit is arranged on lower housing internal upper part, the operation handle arm of power switch is positioned on upper housing left part first round hole outside, it is beneficial to from upper housing external opening or powered-down switch.

3. a kind of anti-explosion panel power switch according to claim 1, it is characterized in that gas detection electricity routing resistance, gas sensitive device, adjustable resistance and one-way SCR composition, gas sensitive device model is QM-N5, resistance one end and gas sensitive device first cathode power supply input terminus 2 pin are connected by wire, adjustable resistance one end and one-way SCR negative electrode, gas sensitive device negative power supply input terminus 4 pin is by wire ground connection, the adjustable resistance the other end and gas sensitive device control power output end 3 pin are connected by wire, adjustable resistance slide contact power output end and one-way SCR control pole are connected by wire, the resistance the other end and gas sensitive device the 2nd cathode power supply input terminus 1 pin are connected by wire, when gas detection circuit installs lower housing internal upper part, the front end of gas sensitive device is positioned on upper housing left part the 2nd round hole outside, it is beneficial to the inflammable gas of detecting leakage.

4. a kind of anti-explosion panel power switch according to claim 1, it is characterized in that warning circuit is by integrated alarm circuit, hummer, resistance and photodiode composition, integrated alarm circuit model is CH100, cathode power supply input terminus 4 pin and resistance one end of integrated alarm circuit are connected by wire, negative power supply input terminus 2 pin of integrated alarm circuit and photodiode negative pole are by wire ground connection, the audio frequency of integrated alarm circuit exports two ends 1 pin, by arriving, wire connects 3 pin with hummer two ends respectively, the resistance the other end and photodiode positive pole are connected by wire, when warning circuit installs lower housing internal upper part, the front end of hummer is positioned on upper housing left part the 3rd round hole outside, it is beneficial to the sound that hummer sends outwards spread out of, the front end of photodiode is positioned on upper housing left part the 4th round hole outside, it is beneficial to from upper housing front outer end viewing lumination of light emitting diode situation.