Pulverized coal furnace starting oil gun with sleeve protection structure

Abstract

The utility model discloses a pulverized coal furnace starting oil gun with a sleeve protection structure, which comprises a panel, an oil gun guide pipe is fixed on the panel, a combustion stabilizing cover is fixed on the outer side of the combustion end of the oil gun guide pipe, an oil gun sleeve is arranged between one side of the panel and one side of the combustion stabilizing cover, the oil gun sleeve is positioned on the outer side of the oil gun guide pipe, and the oil gun guide pipe is fixed on the panel. A flame detection guide pipe is arranged on the panel, one end of the flame detection guide pipe is fixed to one side of the combustion stabilizing cover, an ignition gun in sliding connection is arranged on the panel, an ignition head of the ignition gun is located on one side of the combustion stabilizing cover, a driving assembly for driving the ignition gun to slide is arranged on one side of the panel, and an oil gun is fixed to the inlet end of an oil gun guide pipe. The pulverized coal furnace starting oil gun with the sleeve protection structure is simple in structure and easy and convenient to operate, the oil gun can be protected and prevented from being burnt out at high temperature, and a secondary air nozzle is protected and prevented from being burnt out by leaked oil.

Description

Technical Field

[0001] The utility model relates to the technical field of operation of pulverized coal boilers, in particular to a pulverized coal boiler starting oil gun with a casing protection structure. Background Art

[0002] When using a 170t / h pulverized coal boiler, a mechanical atomizing oil gun is used, which is installed in the lower secondary air duct and is used for ignition, shutdown and stable combustion.

[0003] Its working principle is: oil with a certain pressure is merged into the corresponding annular groove through the oil inlet hole on the oil separator, and then flows into the swirl chamber through the tangential groove on the swirl plate to generate strong rotation, and finally enters the atomizer plate, and is ejected through the central spray hole of the atomizer plate to form a hollow conical atomized airflow composed of droplets; when the oil flow just leaves the nozzle, a turbulent oil film is formed, and the surface of the conical oil film forms uneven ripples due to the turbulent pulsation; there is a large relative motion speed and contact surface between the oil film and the external gas, so that the oil film can overcome the surface tension and break into fine oil droplets to form oil mist.

[0004] During use, it is necessary to protect the swirl atomizer, oil distribution plate and other precision machined parts and joint threads from damage, avoid the compression nut from being seized due to heat, and ensure that the front end of the oil gun nozzle is 20±5mm away from the front end of the combustion stabilizing hood duct.

[0005] If there is a slight deviation in the above requirements, the atomization effect will be poor, the gun barrel will be deformed by high temperature, and oil will drip from the gun tip into the lower secondary air duct, causing the lower secondary air duct to catch fire and burn. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the existing defects and provide a pulverized coal furnace starting oil gun with a sleeve protection structure. The structure is simple and the operation is easy. It can not only protect the oil gun to prevent high-temperature burning, but also protect the secondary air nozzle to prevent oil leakage from burning the nozzle, which can effectively solve the problems in the background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pulverized coal furnace starting oil gun with a sleeve protection structure, comprising a panel, an oil gun guide tube fixed on the panel, a combustion stabilizing hood fixed on the outside of the combustion end of the oil gun guide tube, an oil gun sleeve is provided between one side of the panel and one side of the combustion stabilizing hood, the oil gun sleeve is located on the outside of the oil gun guide tube, a fire detection guide tube is provided on the panel, one end of the fire detection guide tube is fixed on one side of the combustion stabilizing hood, a slidably connected ignition gun is provided on the panel, the ignition head of the ignition gun is located on one side of the combustion stabilizing hood, a driving assembly for driving the ignition gun to slide is provided on one side of the panel, and an oil gun is fixed at the inlet end of the oil gun guide tube.

[0008] Furthermore, the oil gun includes a gun body, an oil separator is provided at one end of the gun body, a sealing ring is provided between the oil separator and the gun body, a swirl atomizer is provided at the end of the oil separator opposite to the gun body, and a clamping nut is provided on the outside of the gun body to fix the oil separator and the swirl atomizer.

[0009] Furthermore, an ignition gun guide tube is fixed on the panel, one end of the ignition gun guide tube is fixed to one side of the combustion stabilizing cover, and the ignition gun is slidably connected to the inside of the ignition gun guide tube.

[0010] Furthermore, the driving assembly includes a telescopic cylinder fixed to the panel, and the telescopic end of the telescopic cylinder is connected to one end of the ignition gun through a support.

[0011] Compared with the prior art, the utility model has the following beneficial effects: an oil gun sleeve is arranged on the outside of the oil gun conduit to protect it, and a sandwich is formed between the oil gun conduit and the oil gun sleeve, and the lower secondary air (wind pressure: 1.5KPa, wind speed 40m / s) is used to cool and purge the oil gun conduit, which can prevent the high-temperature flue gas from radiating and burning the oil gun conduit, and can also be quickly swept away by the lower secondary air when the oil gun drips and falls on the bottom of the oil gun conduit, preventing oil leakage from burning the lower secondary air duct. The pulverized coal furnace starting oil gun with a sleeve protection structure has a simple structure and is easy to operate. It can not only protect the oil gun from being burned by high temperature, but also protect the secondary air nozzle to prevent oil leakage from burning the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the cross-sectional structure of the gun body of the utility model.

[0014] In the figure: 1 panel, 2 oil gun guide tube, 3 combustion stabilizing cover, 4 oil gun sleeve, 5 fire detection guide tube, 6 ignition gun, 7 drive assembly, 71 telescopic cylinder, 72 support, 8 oil gun, 81 gun body, 82 oil distribution plate, 83 sealing ring, 84 swirl atomizing sheet, 85 clamping nut, 9 ignition gun guide tube. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] See also Figure 1-2The utility model provides a technical solution: a pulverized coal furnace starting oil gun with a sleeve protection structure, comprising a panel 1, an oil gun guide tube 2 is fixed on the panel 1, a combustion stabilizing hood 3 is fixed on the outer side of the combustion end of the oil gun guide tube 2, an oil gun sleeve 4 is arranged between one side of the panel 1 and one side of the combustion stabilizing hood 3, the oil gun sleeve 4 is located on the outer side of the oil gun guide tube 2, a fire detection guide tube 5 is arranged on the panel 1, one end of the fire detection guide tube 5 is fixed on one side of the combustion stabilizing hood 3, a slidably connected ignition gun 6 is arranged on the panel 1, an ignition head of the ignition gun 6 is located on one side of the combustion stabilizing hood 3, a driving assembly 7 for driving the ignition gun 6 to slide is arranged on one side of the panel 1, and an oil gun 8 is fixed on the inlet end of the oil gun guide tube 2, the oil gun 8 comprises a gun body 81, and one end of the gun body 81 is provided with an oil distribution plate 8 2. A sealing ring 83 is provided between the oil distribution plate 82 and the gun body 81. A swirl atomizing sheet 84 is provided at one end of the oil distribution plate 82 opposite to the gun body 81. A clamping nut 85 for fixing the oil distribution plate 82 and the swirl atomizing sheet 84 is provided on the outer side of the gun body 81. An ignition gun guide tube 9 is fixed on the panel 1. One end of the ignition gun guide tube 9 is fixed to one side of the stable combustion cover 3. The ignition gun 6 is slidably connected to the inside of the ignition gun guide tube 9. The driving assembly 7 includes a telescopic cylinder 71 fixed to the panel 1. The telescopic end of the telescopic cylinder 71 is connected to one end of the ignition gun 6 through a support 72. The pulverized coal furnace starting oil gun with a sleeve protection structure has a simple structure and is easy to operate. It can not only protect the oil gun from being burned by high temperature, but also protect the secondary air nozzle to prevent oil leakage from burning the nozzle.

[0017] When in use: an oil gun sleeve 4 is arranged on the outside of the oil gun conduit 2 to protect it, and a sandwich is formed between the oil gun conduit 2 and the oil gun sleeve 4. The lower secondary air pressure (1.5 KPa, wind speed 40 m / s) is used to cool and blow the oil gun conduit 2, which can prevent the high-temperature flue gas from radiating and burning the oil gun conduit 2, and can also be quickly blown away by the lower secondary air when the oil gun drips and falls to the bottom of the oil gun conduit 2, thereby preventing oil leakage from burning the lower secondary air duct.

[0018] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A pulverized coal furnace starting oil gun with a casing protection structure, comprising a panel (1), Features: An oil gun guide tube (2) is fixed on the panel (1), a combustion stabilizing hood (3) is fixed on the outer side of the combustion end of the oil gun guide tube (2), an oil gun sleeve (4) is provided between one side of the panel (1) and one side of the combustion stabilizing hood (3), the oil gun sleeve (4) is located on the outer side of the oil gun guide tube (2), a fire detection guide tube (5) is provided on the panel (1), one end of the fire detection guide tube (5) is fixed on one side of the combustion stabilizing hood (3), a slidably connected ignition gun (6) is provided on the panel (1), an ignition head of the ignition gun (6) is located on one side of the combustion stabilizing hood (3), a driving component (7) for driving the ignition gun (6) to slide is provided on one side of the panel (1), and the oil gun guide tube (2) is provided with a plurality of ignition guns (6) connected to the panel (1), and the ignition head of the ignition gun (6) is located on one side of the combustion stabilizing hood (3). An oil gun (8) is fixed to the inlet end of (2); the oil gun (8) comprises a gun body (81), one end of the gun body (81) is provided with an oil separation plate (82), a sealing ring (83) is provided between the oil separation plate (82) and the gun body (81), an end of the oil separation plate (82) opposite to the gun body (81) is provided with a swirl atomizing plate (84), and the outer side of the gun body (81) is provided with a clamping nut (85) for fixing the oil separation plate (82) and the swirl atomizing plate (84); an ignition gun guide tube (9) is fixed to the panel (1), one end of the ignition gun guide tube (9) is fixed to one side of the combustion stabilizing cover (3), and the ignition gun (6) is slidably connected to the inside of the ignition gun guide tube (9).

2. A pulverized coal furnace starting oil gun with a casing protection structure according to claim 1, Features: The driving assembly (7) comprises a telescopic cylinder (71) fixed to the panel (1), and the telescopic end of the telescopic cylinder (71) is connected to one end of the ignition gun (6) via a support (72).

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