CN2162563Y

CN2162563Y - Automatic cutting valve for large flow gas

Info

Publication number: CN2162563Y
Application number: CN 92221510
Authority: CN
Inventors: 殷住顺
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-10-24
Filing date: 1992-10-24
Publication date: 1994-04-20
Anticipated expiration: 2002-10-24

Abstract

The utility model discloses an automatic cutting valve for large flow gas, comprising an attracting coil, an energy storage spring, a barrel-shaped sealing rubber ring, a tension resetting spring, and a hinge type sealing plate; the utility model can cut the gas source automatically under the action of the pulse voltage. The utility model has the advantages of easy use and reliability; the pressure loss is small at the large flow operation time.

Description

Automatic cutting valve for large flow gas

The utility model relates generally to big flow gas automatic stop valve, the particularly device of the big flow gas of urban duct coal gas automatic stop valve.

The city dweller uses the user of gas appliance, gas hot-water apparatus, Gas oven, coal gas infra-red heater more and more, but because user's improper use or gas appliance leak the also rising year by year of accident that causes gas poisoning.Though at present domestic have an automatic alarm breaking unit for coal gas leaked, also there is not the device of the automatic cut-out source of the gas of big flow, use user's gas poisoning of gas of high flow rate apparatus still can take place so.

I in the patent No. of on January 9th, 1992 application be that the patent No. of " automatic alarm breaking unit for coal gas leaked " patent of invention (announcing) of 92100230.3-5 and application on January 28th, 1991 is 91201749 on No. 29 Gazette of Patent for Invention of the 8th volume, " the automatic detection alarm block device of inflammable gas " utility model patent of X (authorize day be on January 29th, 1992) provides two to be with the automatic monitoring gas leakage and the device of cut-out source of the gas automatically.The purpose of this utility model is to provide a cover gas flow the very big and device of the automatic cut-out gas source that the pressure loss is very little, thereby makes the use coal gas that various coal gas users can both safety.

Automatic cut-off valve for gas of high flow rate described in the utility model is made of following parts: gas sensing member; Impulse voltage generator; Big flow automatic stop valve.

The characteristics of automatic cut-off valve for gas of high flow rate described in the utility model are to have adopted the hinge-type sealing plate, make to be in straight-through fully state between the suction port of hinge-type sealing plate this device when opening state and the air outlet, thus make whole valve big flow gas stream during through this device the pressure loss minimum; Adopted barrel-shaped sealing rubber ring, make the hinge-type sealing plate when the opening and closing state and barrel-shaped sealing rubber ring contact position do not have relative displacement, guaranteed that this device can not leak gas under any state; The action of closing source of the gas is to finish on the hinge-type sealing plate by the pressure acting in conjunction of tension force Returnning spring and gas source, thereby makes closing motion simple, reliable; Adopted pulsed voltage to drive pull-in winding, made the whole valve body volume very little.

Below in conjunction with accompanying drawing, the structure of automatic cut-off valve for gas of high flow rate described in the utility model is elaborated.

Fig. 1 is the block diagram of automatic cut-off valve for gas of high flow rate described in the utility model.

Fig. 2 is the Der Grundsatz der Maschinen schematic representation of automatic cut-off valve for gas of high flow rate described in the utility model.

Referring to Fig. 1, Fig. 1 is the block diagram of automatic cut-off valve for gas of high flow rate described in the utility model.The gas leakage voltage signal drive cycle that is sent by gas sensing member is 15 seconds a impulse voltage generator, this impulse voltage generator will send width after receiving the gas leakage voltage signal, every 15 seconds be that 0.5 second pulsed voltage drives pull-in winding work and closes automatic cut-off valve for gas of high flow rate automatically, thereby accident to leak the coal gas is prevented.

Referring to Fig. 2, Fig. 2 is the mechanical schematic diagram of automatic cut-off valve for gas of high flow rate described in the utility model.Illustrating No. 1 parts is the cavitys of giving vent to anger; No. 2 parts are control keys; No. 3 parts are cases; No. 4 parts are the suction iron that resets; No. 5 parts are to inhale the iron locating stud; No. 6 parts are pull-in winding retaining screws; No. 7 parts are pull-in windings; No. 8 parts are Returnning springs; No. 9 parts are gasket seals; No. 10 parts are sealing rubber rings; No. 11 parts are hinge-type sealing plates; No. 12 parts are guide lines; No. 13 parts are air inlet cavitys; No. 14 parts are control key retaining screws; No. 15 parts are barrel-shaped sealing rubber rings; No. 16 parts are sealing clamps; No. 17 parts are hinge-type sealing plate locating studs; No. 18 parts are pressing plate retaining screws; No. 19 parts are retaining screws; No. 20 parts are tension springs.The user must be joined No. 13 parts and the gas source of this device, and No. 1 parts and the output terminal that gas appliance joins, No. 12 parts are connected to impulse voltage generator, this device just can proper functioning.When the user need use coal gas, need only press No. 2 parts, make it to rotate counterclockwise 45 °, drive No. 11 simultaneously and No. 10 parts also rotate counterclockwise 45 ° and give No. 20 parts energy storages thereupon, under the acting in conjunction of No. 4 and No. 8 parts, No. 2 parts are pinned, do not do the time spent there being external force, No. 2, No. 11 and No. 20 parts will be horizontal all the time, be in pass-through state between No. 1 parts and No. 13 parts, gas source just can have no to stop by No. 1 and No. 13 parts and be defeated by gas appliance smoothly, its pressure loss almost can be ignored.When coal gas takes place to leak and reach setting concentration, gas sensing member will receive this signal and send control signal driving pulse voltage generator, this impulse voltage generator will send first time width after having postponed 15 seconds be 0.5 second pulsed voltage, this voltage is sent to No. 7 parts by No. 12 parts and makes it to produce very strong moving No. 4 parts of magnetic field suction and No. 2 parts are broken off relations, under the effect of No. 20 parts, No. 2, No. 11 parts are resetted.And drive No. 10 parts No. 1 parts are sealed very closely, because the gas sealing port of No. 1 parts has three valve wire casings, the pressure of suction port and the effective tension of No. 20 parts make the seal action of No. 10 parts very effective simultaneously, thereby have finished the action of closing source of the gas automatically.Since whole closing motion need only 20～30 milliseconds time, when first pulse voltage signal disappears, having finished of the existing abundant surplus of the action of closing source of the gas automatically of this device, inoperative to this device with pulse voltage signal afterwards.When the user must continue use coal gas, must etc. behind the gas leakage blackout, press No. 2 parts again and pinned and get final product by No. 4 parts.When the user must manual-lock during source of the gas, rotate counterclockwise 2 degree approximately and make it to break off relations and just can close source of the gas easily as long as promote No. 4 parts.Guaranteed that this device is in any state and the gas leakage situation can take place for No. 15.

The gas sensing member of this device through reequiping other type just can become the big flow gas automatic stop valve of cutting out other type source of the gas automatically.

The cavity 1 of giving vent to anger of automatic cut-off valve for gas of high flow rate described in the utility model, air inlet cavity 13, control key 2, hinge-type sealing plate 11 are all made with aluminium diecasting; Hinge-type sealing plate locating stud 17 usefulness brass materials are made, with the flexibility that guarantees that it is long-term; Barrel-shaped sealing rubber ring 15, gasket seal 9, sealing rubber ring 10 are all made with the special-purpose butyronitrile rubber material of corrosion-resistant, ageing-resistant coal gas, to guarantee the working life of this device; Air inlet cavity 13 and give vent to anger between the cavity 1 with screw formation combine closely, guarantee the tightness of this device; Returnning spring 8, tension spring 20 usefulness stainless steel springs are made, to strengthen the corrosion resistance of this device.Pull-in winding 7 is inhaled iron 4 near resetting, Returnning spring 8 presses the suction iron 4 that resets; Reset and inhale iron 4, tension spring 20 combinations; Sealing rubber ring 10 is in air inlet cavity 13 and gives vent to anger between the cavity 1; Pull-in winding 7 is logical near control key 2; Sealing rubber ring 10, hinge-type sealing plate 11 are connected with impulse voltage generator with the tight guide line 12 of crossing of control key 2 usefulness screws.

Claims

1, a kind of automatic cut-off valve for gas of high flow rate is characterized in that to be made up of barrel-shaped sealing rubber ring 15, hinge-type sealing plate 11, control key 2, sealing rubber ring 10, Returnning spring 8, pull-in winding 7, the suction iron 4 that resets, tension spring 20, air inlet cavity 13, the cavity 1 of giving vent to anger pull-in winding 7 is inhaled iron 4 near resetting, Returnning spring 8 presses the suction iron 4 that resets; Reset and inhale iron 4, tension spring 20 near control key 2; Sealing rubber ring 10, hinge-type sealing plate 11 are combined closely with control key 2 usefulness screws; Sealing rubber ring 10 is in air inlet cavity 13 and gives vent to anger between the cavity 1; Pull-in winding 7 is by guide line 12 received pulse voltage control signals.

2, automatic cut-off valve for gas of high flow rate as claimed in claim 1, it is characterized in that resetting, to inhale iron 4 be that the garden heart rotates with suction iron locating stud 5 when this device opening and closing.

3, automatic cut-off valve for gas of high flow rate as claimed in claim 1 is characterized in that hinge-type sealing plate 11 is that the garden heart rotates with hinge-type sealing plate locating stud 17 when the opening and closing of this device, the maximum rotation angle is 45 degree.