CN219530838U

CN219530838U - Energy-saving bubble atomizing oil gun for boiler ignition

Info

Publication number: CN219530838U
Application number: CN202223350806.2U
Authority: CN
Inventors: 束增武
Original assignee: Nanjing Wanhe Measurement & Control Instrument Co ltd
Current assignee: Nanjing Wanhe Measurement & Control Instrument Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-08-15
Anticipated expiration: 2032-12-14

Abstract

The utility model relates to the technical field of ignition oil guns, and discloses an energy-saving bubble atomizing oil gun for boiler ignition, which comprises an oil gun outer tube, wherein an installation frame is fixedly connected to the inner wall of the oil gun outer tube, an oil gun inner tube is fixedly connected to the side wall of the installation frame, an oil gun blocking block is inlaid at the right port of the oil gun outer tube, an oil inlet short tube is fixedly communicated with the side wall of the oil gun blocking block, an air inlet short tube is fixedly communicated with the side wall of the oil gun outer tube, a gun head cover is sleeved at the left end of the oil gun outer tube, and a gun core is fixedly connected to the inner wall of the gun head cover. The oil gun has the advantages of excellent combustion effect, bright flame and low pollutant discharge; and can realize low-oxygen combustion, and can still obtain good combustion effect when the excess air coefficient is 1.03.

Description

Energy-saving bubble atomizing oil gun for boiler ignition

Technical Field

The utility model relates to the technical field of ignition oil guns, in particular to an energy-saving bubble atomizing oil gun for boiler ignition.

Background

In order to improve the performance of the oil guns, some heat power plant boilers adopt oil guns with an atomization function to ignite, and the atomization mechanism of the existing oil guns is to form a film of liquid in advance by means of high pressure, and then to complete the crushing of a liquid film under the action of surface tension; or under the action of pneumatic force, the liquid film is broken after being torn into threads, so that the atomization quality is greatly influenced by the viscosity and the surface tension of the liquid, the distribution characteristics of liquid fog particles are poor, the particle sizes are uneven, and the combustion is directly deteriorated.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, a boiler of a thermal power plant needs to use an ignition oil gun for ignition, and in order to improve the performance of the oil gun, some boilers of the thermal power plant adopt the oil gun with an atomization function for ignition, the atomization mechanism of the existing oil gun is to form a film of liquid in advance by means of high pressure, and then the liquid film is broken under the action of surface tension; or under the action of pneumatic force, the liquid film is torn into threads and then broken, so that the atomization quality is greatly influenced by the viscosity and the surface tension of the liquid, the distribution characteristic of liquid fog particles is poor, the particle size is uneven, and the combustion is directly deteriorated.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides an energy-saving bubble atomizing oil gun for boiler ignition, includes the oil gun outer tube, the inner wall fixedly connected with mounting bracket of oil gun outer tube, the lateral wall fixedly connected with oil gun inner tube of mounting bracket, the right port of oil gun outer tube is inlayed and is had oil gun shutoff piece, the lateral wall fixedly connected with oil gun shutoff piece has the inlet spool, the left end cover of oil gun outer tube is equipped with the rifle head cover, the inner wall fixedly connected with rifle core of rifle head cover, the inlet spool has a rifle front fuel oil branch pipe through hose intercommunication, inlet spool has an atomizing air branch pipe through hose fixedly connected with, fixedly connected with same root purge pipeline between atomizing air branch pipe and the rifle front fuel oil branch pipe, the rifle front fuel oil branch pipe has first stop valve, fuel electric ball valve and fuel oil regulating valve through coupling mechanism fixedly connected with second stop valve, air electric ball valve and first check valve, the lateral wall fixedly connected with of oil gun outer tube has third stop valve, electric ball valve and second stop valve through coupling mechanism, coupling mechanism includes a plurality of installing rings fixedly connected with gun core, install the swivel joint, a plurality of installing rings are located the side of swivel joint, two swivel joint sides are located the arc-shaped side of the swivel joint of two side of the flange, the swivel joint of swivel joint, the swivel joint is equipped with the arc-shaped flange, the swivel joint is equipped with the arc-shaped joint of two side of the swivel joint flange, the swivel joint is equipped with the arc-shaped joint. The upper side wall of a thread cylinder is fixedly connected with a rotary cylinder through a spring, the inner wall of the rotary cylinder is fixedly connected with two sliding blocks, the outer wall of the thread cylinder is provided with two sliding grooves, the lower side wall of the rotary cylinder is symmetrically and fixedly connected with two positioning pins, the upper side is positioned, the side wall of a clamping block is provided with a plurality of positioning grooves matched with the positioning pins, the upper side is positioned, the lower side wall of the clamping block is fixedly connected with two limiting slide bars, the rod wall of the threaded rod is provided with a limiting slide groove matched with the limiting slide bars, the right side is positioned, the left side wall of the mounting ring is fixedly connected with a rubber ring, the left side wall of the mounting ring is provided with a sealing groove matched with the rubber ring, the right side wall of the mounting ring is fixedly connected with two guide bars, the left side wall of the mounting ring is provided with two guide grooves, and the side wall contacted with the mounting ring and the arc frame is an inclined plane.

Preferably, the hose is sleeved with a metal net.

Preferably, a gasket is placed on the left side of the gun core.

Compared with the prior art, the utility model provides the energy-saving bubble atomizing oil gun for boiler ignition, which has the following beneficial effects:

the energy-saving bubble atomizing oil gun for boiler ignition can lead gas and liquid to form bubble flow in advance through the arranged oil gun outer tube, a mounting frame, an oil gun inner tube, an oil gun blocking block, an oil inlet short tube, an air inlet short tube, a gun head cover, a gun core, a gun front fuel oil branch tube, an atomizing air branch tube, a hose and a purging pipeline, and promote the bubbles to expand and break rapidly due to the change of pressure difference between the inside and the outside of the bubbles at the downstream of an outlet, and simultaneously break a liquid film wrapped around to form uniform liquid mist distribution; the atomization quality of the burner is insensitive to the viscosity of liquid, the burner has excellent combustion effect, bright flame and low pollutant emission; and can realize low-oxygen combustion, and can still obtain good combustion effect when the excess air coefficient is 1.03.

Drawings

FIG. 1 is a schematic diagram of a boiler ignition energy-saving bubble atomizing oil gun;

FIG. 2 is a schematic diagram of the internal structure of an outer tube of an oil gun in the energy-saving bubble atomizing oil gun for boiler ignition;

FIG. 3 is a schematic diagram of a connection mode of two mounting rings in the energy-saving bubble atomizing oil gun for boiler ignition;

fig. 4 is a schematic diagram of a connection mode of two arc frames in the energy-saving bubble atomizing oil gun for boiler ignition.

In the figure: 1. an outer tube of the oil gun; 2. a mounting frame; 3. an oil gun inner tube; 4. an oil gun block; 5. an oil inlet short pipe; 6. an air inlet short pipe; 7. a gun head cover; 8. a gun core; 9. a fuel branch pipe in front of the gun; 10. an atomizing air branch pipe; 11. a hose; 12. purging the pipeline; 13. a mounting ring; 14. an arc-shaped frame; 15. a clamping block; 16. a thread cylinder; 17. a threaded rod; 18. a rotating plate; 19. a rotating drum; 20. a sliding block; 21. a sliding groove; 22. a positioning pin; 23. a limit slide bar; 24. limiting sliding grooves; 25. a rubber ring; 26. sealing grooves; 27. a guide rod; 29. a gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, the energy-saving bubble atomizing oil gun for boiler ignition comprises an oil gun outer tube 1, an installation frame 2 is fixedly connected to the inner wall of the oil gun outer tube 1, an oil gun blocking block 4 is inlaid at the right end opening of the oil gun outer tube 1, an oil inlet short tube 5 is fixedly communicated with the side wall of the oil gun blocking block 4, an air inlet short tube 6 is fixedly communicated with the side wall of the oil gun outer tube 1, a gun head cover 7 is sleeved at the left end of the oil gun outer tube 1, a gun core 8 is fixedly connected to the inner wall of the gun head cover 7, the oil inlet short tube 5 is communicated with a gun front fuel branch tube 9 through a hose 11, an atomizing air branch tube 10 is fixedly communicated with an atomizing air branch tube 6 through a hose 11, a same purging pipeline 12 is fixedly communicated between the atomizing air branch tube 10 and the gun front fuel branch tube 9, a first stop valve, a fuel electric ball valve and a fuel regulating valve are fixedly communicated with each other through a connecting mechanism, and the atomizing air electric ball valve and the first stop valve are fixedly communicated with each other through the connecting mechanism, and the purging pipeline 12 is fixedly communicated with a third stop valve, an electric ball valve and a second stop valve.

The connecting mechanism comprises a plurality of mounting rings 13, the plurality of mounting rings 13 are respectively fixed at a plurality of valve bodies, the fuel oil branch pipe 9 in front of the gun, the atomizing air branch pipe 10 and the port of the purging pipeline 12, two arc-shaped frames 14 hinged with each other are sleeved outside the two mounting rings 13, the two arc-shaped frames 14 are far away from the side wall of the hinged part and are fixedly connected with clamping blocks 15, the length of each upper clamping block 15 is longer than that of each lower clamping block 15, the side wall of each upper clamping block 15 is rotationally connected with a threaded cylinder 16, the internal threads of the threaded cylinder 16 are sleeved with threaded rods 17, the lower ends of the threaded rods 17 are rotationally connected with rotating plates 18 through rotating shafts, and the rotating plates 18 are contacted with the lower side wall of each lower clamping block 15 so as to disassemble and assemble each valve body.

The upper side wall of the threaded cylinder 16 is fixedly connected with a rotary cylinder 19 through a spring, the inner wall of the rotary cylinder 19 is fixedly connected with two sliding blocks 20, two sliding grooves 21 are formed in the outer wall of the threaded cylinder 16, two positioning pins 22 are symmetrically and fixedly connected to the lower side wall of the rotary cylinder 19, and a plurality of positioning grooves matched with the positioning pins 22 are formed in the side wall of the upper clamping block 15, so that the threaded cylinder 16 can be limited.

The lower side wall of the upper clamping block 15 is fixedly connected with two limit sliding rods 23, the rod wall of the threaded rod 17 is provided with limit sliding grooves 24 matched with the limit sliding rods 23, the threaded rod 17 can be prevented from rotating, and the threaded rod 17 can only move up and down in the vertical direction.

The left side wall of the right side mounting ring 13 is fixedly connected with a rubber ring 25, and the side wall of the left side mounting ring 13 is provided with a sealing groove 26 matched with the rubber ring 25, so that the tightness between the two mounting rings 13 is improved.

The left side wall of the right side mounting ring 13 is fixedly connected with two guide rods 27, and the right side wall of the left side mounting ring 13 is provided with two guide grooves, so that the placement stability between the two mounting rings 13 is improved.

The side walls of the mounting rings 13 and the arc-shaped frames 14, which are in contact with each other, are inclined surfaces, so that the two mounting rings 13 can be in close contact.

The hose 11 is sleeved with a metal net, so that the hose 11 can be protected.

A gasket 29 is placed on the left side of the gun core 8, so that the tightness of the gun core 8 is ensured.

In the utility model, when in use, a low-pressure atomization medium (steam or compressed air) is injected into low-pressure oil by utilizing a hydrodynamic two-phase flow theory, and is mixed in a mixing cavity to form a specific flow state-bubble flow of oil-in-gas, and the bubbles are generated, moved and deformed until pressure difference between the inside and outside of the bubbles is formed at the outlet of the gun head, so that the bubbles are expanded and cracked by the pressure difference to be atomized, and the surface tension of fuel oil is damaged, so that the energy consumption is small, the atomization granularity is fine (generally about 50 mu m), the size distribution is uniform, and the distribution index N is more than 2, therefore, the combustion is sufficient, and black smoke is not emitted; in addition, the oil holes and the air holes are large and the number of the holes is large, so that coking and blockage are not easy to occur, and the phenomenon of black smoke is generated when the cold furnace ignites.

Claims

1. The utility model provides an energy-saving bubble atomizing oil gun for boiler ignition, includes oil gun outer tube (1), its characterized in that, the inner wall fixedly connected with mounting bracket (2) of oil gun outer tube (1), the lateral wall fixedly connected with oil gun inner tube (3) of mounting bracket (2), the right port of oil gun outer tube (1) is inlayed and is had oil gun shutoff piece (4), the lateral wall fixedly connected with oil feed nozzle (5) of oil gun shutoff piece (4), the lateral wall fixedly connected with inlet spool (6) of oil gun outer tube (1), the left end cover of oil gun outer tube (1) is equipped with rifle head cap (7), the inner wall fixedly connected with rifle core (8) of rifle head cap (7), oil feed nozzle (5) are through hose (11) intercommunication have before the rifle fuel branch pipe (9), inlet spool (6) are through hose (11) fixedly connected with atomizing air branch pipe (10), fixedly connected with same root pipeline (12) between atomizing air branch pipe (10) and the before the rifle fuel branch pipe (9) are through coupling mechanism, and are connected with electric ball valve (10) and ball valve (12) through first stop valve, ball valve (12) are connected with each other through electric air-stop valve and second stop valve and air-stop valve, the connecting mechanism comprises a plurality of mounting rings (13), the mounting rings (13) are respectively fixed at the ports of a plurality of valve bodies, a gun front fuel oil branch pipe (9), an atomization air branch pipe (10) and a purging pipeline (12), two arc frames (14) hinged with each other are sleeved outside the mounting rings (13), two arc frames (14) are far away from the side wall of the hinged position, clamping blocks (15) are fixedly connected to the side walls of the arc frames (14), the length of the clamping blocks (15) is longer than that of the clamping blocks (15) at the lower side, threaded cylinders (16) are rotatably connected to the side walls of the clamping blocks (15) at the upper side, threaded rods (17) are sleeved with internal threads, the lower ends of the threaded rods (17) are rotatably connected with rotary plates (18) through rotating shafts, the lower side walls of the rotary plates (18) and the lower side clamping blocks (15) are contacted with each other, the upper side walls of the threaded cylinders (16) are fixedly connected with rotary cylinders (19) through springs, two sliding blocks (20) are fixedly connected to the inner walls of the rotary cylinders (19), the outer walls of the threaded cylinders (16) are provided with threaded cylinders (16) which are rotatably connected with threaded cylinders (16), two positioning pins (22) are symmetrically arranged on the side walls of the two positioning pins (22) which are fixedly provided with positioning pins (22), the utility model provides a sealing device, is located the upside lower lateral wall fixedly connected with two spacing slide bars (23) of fixture block (15), spacing spout (24) with spacing slide bar (23) mutual matching are seted up to the pole wall of threaded rod (17), are located the right side left side wall fixedly connected with rubber circle (25) of collar (13), are located the left side seal groove (26) with rubber circle (25) mutual matching are seted up to the lateral wall of collar (13), are located the right side two guide bars (27) of left side wall fixedly connected with of collar (13), are located the left side two guide slots have been seted up to the right side wall of collar (13), the lateral wall of collar (13) and arc frame (14) contact each other is the inclined plane.

2. Energy-efficient air bubble atomizing oil gun for boiler ignition according to claim 1, characterized in that the hose (11) is sheathed with a metal mesh.

3. Energy-efficient air-bubble atomizing oil gun for boiler ignition according to claim 1, characterized in that a gasket (29) is placed on the left side of the gun core (8).