CN2467902Y

CN2467902Y - Fast oil gun

Info

Publication number: CN2467902Y
Application number: CN 01205846
Authority: CN
Inventors: 朱少波
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-18
Filing date: 2001-02-18
Publication date: 2001-12-26
Anticipated expiration: 2011-02-18

Abstract

The utility model relates to an oil gun for mechanical atomizing fuel oil of a boiler, which solves the problems that the existing oil gun is required to be blown and swept by steam before the oil gun is thrown in or after the oil gun is thrown in and the oil gun and an oil pipe are easily coagulated and clogged with long throw-in time, low success ratio, etc. The utility model is characterized in that in the course of the standby of the oil gun, a spout is in the state of closure, but a small amount of oil return is still maintained in the oil gun to avoid blowing and sweeping with steam. A special decoking thimble can remove and prevent the coking of the spout. A flexible operating mechanism is combined with the oil gun into integration. Under the precondition that any electromagnetic valve is not assembled and any valve is not manually operated, the oil gun can be thrown and stopped by means of the power of a propeller of the oil gun. The utility model is a new generation of combustion device for the stable combustion of a boiler and preventing fire and extinguishing fire for the boiler.

Description

Fast oil gun

The utility model relates to a kind of boiler integrated machine atomized fuel oil gun, has realized that standby servo oil gun does not block up, exempts to provide key equipment with the steam blowing and the characteristics that can drop into fast for preventing boiler extinguishment and smooth combustion with fixed attention.

At present, the various forms of heavy oil oil guns that Industrial Boiler adopted, after out of service, for preventing to remain in the oil plant frozen plug in the oil gun, and must utilize steam to purge for a long time, so that can normally drop into next time, and before dropping into or lighting a fire, also must be through steps such as shut-down purge steam valve, unlatching inlet valve and starting ignitions.As Ministry of Water Resources and Electric Power and northwest power administration co-publicate that " boiler safety supervision " (volume two) chapter 5 the 3rd joint of distribution mentioned " during igniting; by timer control (being generally 1 minute); if at timer in the time; torch oil gun flame is unignited; then close the oil-closing valve door automatically, recover ignition procedure again." visible because operations such as loaded down with trivial details open and close gate valve and forward and back oil gun had both reduced program control reliability, can not adapt to again at all boiler in case of emergency can drop into the combustion-supporting needs of oil gun fast, easily cause boiler extinguishment.In order to address this problem, both at home and abroad for more important coal-burning boiler, can only accompany burning heavy oil for a long time or assemble ignition installations such as special light oil, gas, thereby consumed, a large amount of, can be for the oil plant and the fuel gas of deep processing, increase the overlapping investment of equipment and the complexity of system, reduced economic benefit.

The purpose of this utility model is to provide a kind of, can adopt a propeller to finish the Fast oil gun of the heavy oil combustion of all operations, it has coagulates stifled, noncoking, exempts from steam blowing and the characteristics that drop into fast, also can control distributive value by regulating angle of rake stroke, and this oil gun can be common to various other lightweight wet goods fuel.

The purpose of this utility model is achieved in that when oil gun is standby, the spout of oil gun nozzle (6) is in closed condition, heavy oil is done flowing of low discharge from the oil gun oil return opening that enters the mouth in oil gun, make the oil gun that is in the high-temperature region remain on lower temperature and the unlikely coking of fuel oil, be reduced to below the freezing point temperature and the obstruction that causes with the fuel oil temperature in the relevant oil pipe is unlikely, when needs put into operation, when electric pushrod pushes the operating position with oil gun, stir the former moving bar (20) of oil gun by its power, the spout of oil gun nozzle (6) is opened, fuel oil sprays and burns.Be inverse process when out of service.In addition, by changing the angle of rake position of oil gun, the axial location that can change the endoporus of the garden wimble fraction of post garden, garden poppet valve core (3) and the collar (5) of feeling relieved changes the flow area of its oil return, reaches the purpose of regulating recirculating oil quantity and distributive value.Accompanying drawing 1 is that the state that provides among the figure is a stand-by state according to the structure principle chart of the Fast oil gun that the utility model proposes.Describe detail and the operation principle that proposes according to Fast oil gun in detail below in conjunction with accompanying drawing 1, in describing present principles, the public professional knowledge that relates to please refer to the interrelated data of power plant boiler part, or consults " power plant's fuel oil design " middle relative section that Hubei Province's Electric Power Design Institute is published.This oil gun is made up of oil gun body and operating mechanism two parts, wherein clamp nut (2), nozzle (6), front connector (7), outer tube (8), interior pipe (9), back joint (11), hose coupling (12) are similar to existing pressure atomization oil gun, and the principle of atomizing is also similar.Mainly on the oil gun body, increased by a cover and opened and closed assembly, open and close assembly and comprise decoking thimble (1), post garden, garden poppet valve core (3), the centering collar (5), valve rod (10), the bonnet (13) of band valve rod sealing device, filler (14), packing press ring (15), gland (16), this keying assembly can be controlled and operate to increase flexibly, link into an integrated entity with the oil gun body, only need the operating mechanism part by the action of oil gun propeller power, operating mechanism comprises operating mechanism fixed muffle (17), compression spring (18), guide link (19), former moving bar (20), side link (21) and support (22).The spout of the tapering part of its post garden, garden poppet valve core (3) and nozzle (6) and transition tapered zone match and can play by effect, to play the cooperating of the spout straight section of its decoking thimble (1) and nozzle (6) effect that the spout straight section that prevents nozzle (6) is stopped up by coke: promptly in closing closed procedure, because the spout straight section that decoking thimble (1) passes nozzle (6) is to the spout outside time, coke residual in the spout straight section with nozzle (6) is released, thereby realized the decoking function, after closing, because the spout straight section space of nozzle (6) is all occupied by decoking thimble (1), and do not have the space of coking, thereby realized the function of anti-coking.The big Cylinder section of post garden, garden poppet valve core (3) cooperates with the centering collar (5), the axially-movable of post garden, garden poppet valve core (3) is remained on the axial line of oil gun, in addition, the oil-recovery tank (4) of the oil-recovery tank (4) on the big Cylinder surface of post garden, garden poppet valve core (3) and the centering collar (5) inner surface, can make oil gun under stand-by state, keep a spot of oil return, make the oil gun that is in the high-temperature region remain on lower temperature and the unlikely coking of fuel oil, be reduced to below the freezing point temperature and the obstruction that causes with the fuel oil temperature in the relevant oil pipe is unlikely, the bonnet (13) of band valve rod sealing device is except that having the effect that present oil gun has, also be processed with the sealing device that can play the sealed valve stem effect, the outside also is processed with external screw thread in its back-end in addition, is used for being connected and fixedly making it with operating mechanism becoming one.Operating mechanism fixed muffle (17) is that a side is an opening, opposite side is the garden cylindricality cannulated sleeve of half opening, processed internal thread in opening one end inboard, be used for screwing fixing with the bonnet (13) of band valve rod sealing device, guide link (19) and compression spring (18) are installed in the operating mechanism fixed muffle (17), guide link (19) is by the cannelure clamping of its matrix radial slot and valve rod (10), to realize to valve rod (10), the axial control of post garden, garden poppet valve core (3), compression spring (18) is then by guide link (19), valve rod (10) produces the strength of the spout close nozzle (6) to post garden, garden poppet valve core (3), and guiding connects (19) bar can play guide effect with cooperating also of operating mechanism fixed muffle (17).When needs drop into, the power switch of operating personnel's (or control automatically) electric pushrod that closes, electric pushrod just stretches into oil gun burner hearth (being the operating position) rapidly, also push simultaneously former moving bar (20) motion, the principle of deciding block mechanism by four-bar linkage, guide link (19) is outwards pulled out, so make valve rod (10) and post garden, garden poppet valve core (3) leave the spout of nozzle (6) and make that spout is opened, fuel oil ejection and burning.When out of service, electric pushrod is pulled out burner hearth (being the spare space) with oil gun, because the tension force of external compression spring (18), make oil gun return to stand-by state, again spout is closed, thereby it is simple, rapidly to have realized dropping into or withdrawed from oil gun, and any valve of inoperation or purge with steam.In addition, this oil gun also can be regulated distributive value by adjusting angle of rake position: after oil gun puts into operation, the cone of its post garden, garden poppet valve core (3) partly enters in the endoporus of the centering collar (5), when changing angle of rake position, the cone part of post garden, garden poppet valve core (3) also can be done axial relative displacement in the endoporus of the centering collar (5), make the flow area of oil return obtain changing, thereby reach the purpose that changes distributive value by changing oil return.

According to its principle with by test, Fast oil gun is compared the advantage and the characteristics that have with existing pressure atomization oil gun and mainly contained: (1) has realized input or has withdrawed from oil gun simple, rapidly, all operation only needs propeller is controlled (comprising fuel-flow control), realized that a propeller finishes all operations, both can adopt conventional relay control, can adopt microcomputer numerical control again, making time 1～3 second, can boiler extinguishment in former seconds hand behaviour or automatically control the Fast oil gun input is surely fired, even can detect boiler extinguishment at FSSS (burner hearth safety monitoring system) and before flame failure protection action, again fire is lighted, greatly improved the security performance of boiler; (2) drop into and withdraw from oil gun and need not operate any valve or purge, both simplified operation, help improving the reliability of this system again, also can save a large amount of steam, optimize the operation of flue afterbody and cleaner with steam; (3) under the prerequisite that does not increase investment, can realize the adjusting of single oil gun distributive value, can optimize the burning adjustment of boiler; (4) because there is high temperature oil this oil gun its inside when standby all the time circulation (in fact deep fat from spout several millimeters places only), easily catch fire during input, it cooperates with high energy ignition unit, can obtain fabulous effect; (5) accompany the coal-burning boiler of oil firing rifle for a long time, after adopting this oil gun, guaranteeing that its oil gun rate of coming into operation can reduce 75% under the safe and reliable prerequisite.

Accompanying drawing 1 is according to the structure principle chart of the Fast oil gun that the utility model proposes, and comprises two parts of oil gun body and operating mechanism among the figure, and the state that provides among the figure is a stand-by state.Wherein: 1 be the decoking thimble, 2 for clamp nut, 3 for post garden, garden poppet valve core, 4 for oil-recovery tank, 5 for the centering collar, 6 for nozzle, 7 for front connector, 8 for outer tube, 9 for interior pipe, 10 for valve rod, 11 for the back joint, 12 for hose coupling, 13 bonnets for the band valve rod sealing device, 14 for filler, 15 for packing press ring, 16 for gland, 17 for the operating mechanism fixed muffle, 18 for the compression spring, 19 for guide link, 20 for former moving bar, 21 for side link, 22 for support, the haircut indication is oily flow path direction.

Implementing this utility model technology ratio is easier to, clamp nut wherein, nozzle, front connector, back joint, outer tube, interior pipe is similar to existing pressure atomization oil gun, but nozzle, garden post garden poppet valve core and centering collar etc. should guarantee certain machining accuracy, when stand-by state, because poppet valve core big column part in post garden, garden is less with the gap of centering collar, for preventing obstructions such as silt and coke, difference according to the filter screen aperture size of user's oil filter, can prolong axial direction at the big garden of poppet valve core, post garden, garden post surface and centering collar bore area and respectively process the flow area of 1～8 notch about 1mm with the increase oil return, valve rod can adopt the bar of Φ 10mm to make, propeller should adopt the above power of 2000N, and propeller adopts electronic or pneumatic booster all can satisfy the needs that boiler moves in all cases.

Claims

1, a kind of Fast oil gun, the clamp nut of this oil gun (2), nozzle (6), front connector (7), outer tube (8), interior pipe (9), back joint (11), hose coupling (12) are similar to existing pressure atomization oil gun.The keying assembly that has increased spout straight section coking and blocking spout, that can prevent nozzle (6) that can reliably open or close nozzle (6) at the oil gun body part that is characterised in that of the present utility model has also increased and can operate operating mechanism part this keying assembly, that link into an integrated entity with the oil gun body.Described keying assembly comprises bonnet (13), filler (14), packing press ring (15) and the gland (16) of anti-scorch thimble (1), post garden, garden poppet valve core (3), the centering collar (5), valve rod (10), band valve rod sealing device.Described operating mechanism comprises operating mechanism fixed sleeving (17), compression spring (18), guide link (19), former moving bar (20), side link (21) and support (22).

2, Fast oil gun according to claim 1, it is characterized in that garden cone top part at solid post garden poppet valve core (3) the decoking thimble (1) that is shaped as Cylinder that superposeed, a big Cylinder has superposeed in awl bottom, garden, and prolong axial direction on this Cylinder surface and have 1～8 oil-recovery tank (4), having superposeed one at the opposite side of this Cylinder is used for the screw that is connected with valve rod (10).

3, according to claim 1,2 described Fast oil guns, it is characterized in that decoking thimble (1) is a Cylinder and the cone top that is superimposed upon post garden, garden poppet valve core (3), its effect is the spout straight section that passes nozzle (6) by decoking thimble (1) reaches decoking and anti-coking when outside to spout a purpose.

4, Fast oil gun according to claim 1, the collar (5) that it is characterized in that feeling relieved is a garden cylindricality tubular body that embeds in the nozzle (6), by cooperating of the centering collar (5) and the big Cylinder of post garden, garden poppet valve core (3), the axially-movable of post garden, garden poppet valve core (3) is remained on the axial line, and prolong axial direction and have 1～8 oil-recovery tank (4) at the bore area of the centering collar (5).

5, Fast oil gun according to claim 1, it is characterized in that valve rod (10) is elongate rod, one end is processed with internal thread at axis direction and is used for being connected with post garden, garden poppet valve core (3), is processed with a cannelure at the other end, is used for guide link (19) clamping with operating mechanism.

6, Fast oil gun according to claim 1, it is characterized in that bonnet (13) with valve rod sealing device, prolong the oil gun axial direction at its afterbody and increased a valve rod sealing device, be used for sealing to valve rod (10), and outside afterbody, processed external screw thread on the garden, be used for screwing fixing with operating mechanism fixed muffle (17).

7, Fast oil gun according to claim 1, it is characterized in that operating mechanism fixed muffle (17) is that a side is that opening, opposite side are the garden cylindricality cannulated sleeve of half opening, processed internal thread in opening one end inboard, be used for screwing fixing with the bonnet (13) of band valve rod sealing device, outside garden post surface soldered a support (22), as the fulcrum of side link (21).

8, Fast oil gun according to claim 1, it is characterized in that guide link (19) is coiled by a garden and garden rod stack is formed, coil a side in the garden and have the matrix radial slot, can be connected in valve rod (10) cannelure to realize axial control valve rod (10), post garden, garden poppet valve core (3), opposite side has a mouth of connecting trough and can be connected with former moving bar (20), and guide link (19) cooperates the effect that also can play guide effect and transmit compression bullet (18) spring tension force with operating mechanism fixed muffle (17).

9, Fast oil gun according to claim 1, it is characterized in that having adopted a compression spring (18) in the oil gun outside, the tension force of its compression spring (18) acts on guide link (19), valve rod (10) and post garden, garden poppet valve core (3) and goes up the spout of reliably closing nozzle (6) with assurance post garden, garden poppet valve core (3).