CN2827558Y

CN2827558Y - Air shock gun

Info

Publication number: CN2827558Y
Application number: CN 200520034180
Authority: CN
Inventors: 殷志炜; 王卫东; 王�琦; 欧阳米奇
Original assignee: 殷志炜
Priority date: 2005-05-12
Filing date: 2005-05-12
Publication date: 2006-10-18
Anticipated expiration: 2015-05-12

Abstract

The utility model provides an air shock gun which comprises a gun body, a back cover plate, a shock tube, an air storing tank, a piston arranged in the gun body, a buffer spring, a back baffle plate, a sealed front chamber and an air inlet, wherein the piston comprises a front piston and a back piston, the front piston is positioned in the sealed front chamber to form a back pressure chamber with the back baffle plate, and the back piston is arranged on the other side of the back baffle plate to form a sealed back chamber with a cylinder body; the back baffle plate is designed into an annular shape, and forms a concave hollow cavity to form an air exhausting chamber with the sealed back chamber which is positioned in the concave hollow cavity of the back baffle plate; the sealed back chamber is provided with an air pipeline interface, and the air exhausting chamber is provided with an air outlet. The utility model has the advantages that common air is used as a working medium so that the air shock gun has high safety, and the utility model can be used for ash blowing of a boiler chamber of a boiler, ash removal of general pipelines and blocked coal cleaning, and has the advantages of strong shock strength, large power, good ash removing effect, simple design and installation, low cost and convenient maintenance.

Description

The air shock wave big gun

Technical field

The utility model patent relates to a kind of special air bubble, and particularly a kind of industries such as station boiler, cement, flour that are widely used in are blown the air shock wave big gun of grey block clearing.

Background technology

Shock wave is finite disturbance wave propagation in the air, it is a violent compressional wave, air can be subjected to rapid compression through behind the shock wave, and its pressure, temperature and density all can produce limited raising, so every physical parameter of air is in the limited variation in the front and back of shock wave.The intensity of shock wave and its velocity correlation, above-mentioned compression was finished in the utmost point short time, and typical shock wave thickness has only the average free layer thickness of air molecule.The key of utilization pipe inner high voltage gas generation shock wave is the speed of rupture of membranes, and the quick valve that the air bubble of having used at present etc. are adopted as plunger type, the quick valve of diaphragm type, also is difficult to the open the door speed of realization near rupture of membranes, and produces the shock wave of usable intensity.

Existing air bubble, mainly based on acoustic energy, operating distance is nearer, and power is less, is used for the cleaning of some pipeline chute blockage of power industry, often is powerless; And for the ash that blows in the boiler, because station boiler maximizes day by day at present, size of burner hearth increasing (usually at 10～20 meters) therefore for the operating distance of normal air big gun, can't be applied on station boiler.And use more and more wider gas shock-wave ash blowing device on the station boiler at present, it is no doubt obvious to blow grey effect, but owing to adopted fuel gas, its range of application has been subjected to certain restriction, generally can only be applied to the low-temperature zone of boiler, have the safety issue of equipment working service simultaneously.

The utility model content

It is working media with the normal air that the purpose of this utility model is to provide a kind of, can be used for the air shock wave big gun that boiler furnace blows ash, conventional pipeline deashing and chute blockage cleaning, to reach the purpose that shock strength is big, power is big, ash-removal effect is good, applied widely, safe.

Solution of the present utility model is that this kind air shock wave big gun comprises the big gun body, shock tube, air accumulator, be located at the piston in the big gun body, buffer spring, rear bulkhead, the sealing cup that communicates with air accumulator, be located at the air inlet on the sealing cup, before it is characterized in that piston comprises, back piston, secondary piston is positioned at the sealing cup, be arranged between rear bulkhead and the shock tube, and the back pressure chamber that constitutes between the rear bulkhead, back piston is arranged on the rear bulkhead opposite side, and constitute chamber, sealing back between the cylinder body, and rear bulkhead is made as ring-type and forms re-entrant cavity, chamber, sealing back then is positioned at the re-entrant cavity of rear bulkhead, constitute exhaust chamber between the re-entrant cavity of rear bulkhead and the chamber, sealing back, the chamber is provided with the air pipe line interface after sealing, at exhaust chamber exhaust outlet is set.

Above-mentioned sealing front chamber volume is greater than back pressure chamber, and the back pressure chamber volume is greater than chamber, sealing back.

Above-mentioned secondary piston front end is provided with the location mouse cage, and this location mouse cage other end is located in the shock tube, and adopts end face seal between secondary piston and the shock tube.

Above-mentioned big gun body top is provided with silencer, and silencer is communicated with exhaust chamber.

Above-mentioned air accumulator is positioned at big gun body below medium position, and is connected by flange between the big gun body.

Advantage of the present utility model is to be provided with two cover pistons, the compressed air that discharges the secondary piston back pressure chamber fast that moves by back piston, thereby reach secondary piston movement velocity faster, improved the speed of opening the door greatly, increased shock strength, ash-removal effect is good, is widely used in fields such as thermal power generation boiler, cement, pipeline block clearing.Because with the normal air is working media, avoided using a series of potential safety hazards such as pipeline leakage that like product brought of combustion gas or steam, improved security performance.The utility model design and installation is simple, cost is low, maintenance is very convenient.

Description of drawings

Accompanying drawing 1 is the utility model schematic diagram;

Accompanying drawing 2 is the utility model structural representations.

Among the figure: 1, rear bulkhead; 2, muffler; 3, big gun body; 4, buffer spring; 5, secondary piston; 6, sealing cup; 7, shock tube; 8, location mouse cage; 9, air accumulator; 10, back pressure chamber; 11, exhaust chamber; 12, back piston; 13, chamber, sealing back.

The specific embodiment

Below in conjunction with accompanying drawing the utility model embodiment is further described.

Shock wave big gun with air pressure 0.8MPa is the example explanation: big gun body middle part is managed orchid and is communicated with air accumulator 9, and shock tube 7 is located at big gun body 3 front ends, is connected with big gun body 3 by flange; Piston 5 is positioned at sealing cup 4, is arranged between rear bulkhead 1 and the shock tube 7; Piston 12 is positioned at chamber 13, sealing back, and the air pipe line interface of chamber 13 is provided with air bleeding valve after sealing; Rear bulkhead 1 is a ring-type, forms re-entrant cavity, adopts bolt to be connected with big gun body stack shell 3; Shock tube 7 before location mouse cage 8 is positioned at adopts bolt to be connected with secondary piston 5.

Operation principle of the present utility model is: (one) installs loading: at first add compressed air to chamber, sealing back, piston 12 beginnings are forwards moved, end face by piston 12 makes back pressure chamber 10 be in sealing state at last, charge into compressed air to back pressure chamber 10 again, piston 5 is moved to shock tube 7 directions, and the end face of piston 5 makes the air of sealing cup 6 and air accumulator 9 be in sealing state, and then charges into compressed air to air accumulator 9, after reaching operating pressure, device is in state to be excited.(2) device excites: motion adopts multistage exhaust to make the intestine evacuation velocity of back pressure chamber 10 reach maximum possibility, at first open the air bleeding valve of chamber 13, sealing back, piston 12 setting in motions, the little volume gas of chamber 13, sealing back is by emptying rapidly, huge pressure reduction makes piston 12 obtain higher initial motion speed, 1 bigger seal of piston 12 and rear bulkhead is opened rapidly, back pressure chamber 10 inner high voltage strength bodies are with same principle quilt emptying rapidly, the bigger piston of area 5 is quickened rapidly under the big differential pressure action of sealing cup 6 and back pressure chamber 10, thereby obtain high movement velocity, during the speed set reaching as required, the sealing surface of piston 5 leaves shock tube 7 imports, gases at high pressure in the energy-storing chamber are discharged in a flash in the shock tube 7 of low pressure, form the blast rupture of membranes, the initial compressional wave that forms is constantly strengthened in the shock tube of certain-length layer by layer, finally sprays from the mouth of pipe with strong shock wave form.

Claims

1, a kind of air shock wave big gun, comprise the big gun body, shock tube, air accumulator, be located at the piston in the big gun body, buffer spring, rear bulkhead, the sealing cup that communicates with air accumulator, be located at the air inlet on the sealing cup, before it is characterized in that piston comprises, back piston, secondary piston is positioned at the sealing cup, be arranged between rear bulkhead and the shock tube, and the back pressure chamber that constitutes between the rear bulkhead, back piston is arranged on the rear bulkhead opposite side, and constitute chamber, sealing back between the cylinder body, and rear bulkhead is made as ring-type and forms re-entrant cavity, chamber, sealing back then is positioned at the re-entrant cavity of rear bulkhead, constitute exhaust chamber between the re-entrant cavity of rear bulkhead and the chamber, sealing back, the chamber is provided with the air pipe line interface after sealing, at exhaust chamber exhaust outlet is set.

2, air shock wave big gun according to claim 1 is characterized in that described sealing front chamber volume greater than back pressure chamber, and the back pressure chamber volume is greater than chamber, sealing back.

3, air shock wave big gun according to claim 1 is characterized in that described secondary piston front end is provided with the location mouse cage, and this location mouse cage other end is located in the shock tube, and adopts end face seal between secondary piston and the shock tube.

4, air shock wave big gun according to claim 1 is characterized in that described big gun body top is provided with silencer, and this silencer is communicated with exhaust chamber.

5, air shock wave big gun according to claim 1 is characterized in that described air accumulator is positioned at big gun body middle part lower position, and is connected by flange between the big gun body.