Adjustable integrated fuel gun

Abstract

The invention discloses an adjustable integrated fuel gun, and relates to a fuel gun. The problem that in the prior art, the fuel injection quantity of a stable fuel oil gun cannot be adjusted, and resource waste is caused is solved. An output shaft of the driving motor is fixedly connected with the telescopic connecting rod, the telescopic connecting rod, the mandrel, the transmission shaft and the ejector pin are coaxially and fixedly connected in sequence, the ejector pin abuts against a spray hole of the atomization spray head, the adjusting nut is fixedly connected into the oil conveying pipe, and the adjusting nut is in threaded connection with the ejector pin. The adjusting nut and the coaxial positioning sleeve are both provided with oil conveying holes, oil in the oil conveying pipe sequentially flows through the adjusting nut, the coaxial positioning sleeve and the rotational flow plate and then is sprayed into the hearth from the nozzle, adaptive adjustment can be conducted on the boiler under different working conditions, and meanwhile the energy-saving effect is achieved. The invention belongs to the technical field of power station combustion-supporting oil guns.

Description

Technical Field

[0001] The present invention relates to a fuel gun, in particular to an adjustable integrated fuel gun, belonging to the technical field of fuel-boosting guns for power stations. Background Art

[0002] With the rise of photovoltaic and wind power in my country, the access to the grid during the day will have a greater impact on the grid load, which requires thermal power plants to have a wide range of peak regulation capabilities to meet the needs of the electricity market.

[0003] The coal feeding system of a power plant is an important system for supplying energy to the boiler. The raw coal is transported by a belt to the hopper, and then passes through the coal drop pipe, coal feeder, coal mill, and burner to send the pulverized coal into the furnace. Finally, the pulverized coal is ignited by the stabilized oil gun.

[0004] In actual engineering, due to different coal qualities, the combustion of the same quality of pulverized coal may require different qualities of fuel oil to assist in the ignition and power generation process. Secondly, during the ignition process of the boiler, the temperature inside the furnace will gradually rise, so that the pulverized coal in the furnace will burn more fully. At this time, it is necessary to adjust the input of the stabilizing oil gun to adapt to this situation. During the operation of the boiler, the fluctuation of the furnace temperature also requires the assistance of the stabilizing oil gun. Currently, the stabilizing oil guns in most domestic power plants are non-adjustable, which results in a certain waste of resources.

[0005] In summary, how to propose an adjustable oil gun to address the above technical issues has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides an adjustable integrated fuel gun.

[0007] The technical solution of the present invention is: an adjustable integrated fuel gun, comprising a drive unit, a fuel pipe and an atomizing nozzle which are coaxially fixed in sequence.

[0008] The driving unit includes a sleeve, a driving motor, a bracket, a telescopic connecting rod, a core shaft, a transmission shaft, a thimble, an adjusting nut and a host computer.

[0009] The driving motor is communicatively connected to the upper computer. The driving motor and the sleeve are respectively installed at two ends of the bracket. The core shaft is inserted into the sleeve, and a sealing ring is installed on the core shaft.

[0010] The transmission shaft is arranged in the oil delivery pipe, an oil inlet is opened on the oil delivery pipe, and two ends of the oil delivery pipe are respectively fixedly connected with the sleeve and the atomizing nozzle.

[0011] The output shaft of the driving motor is fixedly connected to the telescopic connecting rod. The telescopic connecting rod, the core shaft, the transmission shaft and the ejector pin are coaxially fixedly connected in sequence. The ejector pin is against the spray hole of the atomizing nozzle.

[0012] An oil delivery hole is opened on the adjusting nut, the adjusting nut is fixed in the oil delivery pipe, and the adjusting nut is threadedly connected to the outer circumference of the ejector pin.

[0013] Compared with the prior art, the present invention has the following effects:

[0014] The present invention has a simple structure, is easy to operate, and is extremely practical: the ejector pin 3 is threadedly connected to the adjusting nut 2 fixed in the oil pipeline 7, and the advancement and retreat of the ejector pin 3 can be controlled by the driving motor 12, thereby controlling the opening of the atomizing nozzle 1, and can adaptively adjust the boiler under different working conditions, while achieving energy-saving effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the core shaft 8 and the sleeve 13 of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the core shaft 8, the oil delivery pipe 7 and the transmission shaft 6 of the present invention;

[0018] Figure 4 It is a structural schematic diagram of the atomizing nozzle 1 of the present invention.

[0019] In the figure: 1. atomizing nozzle; 1-1. outer shell; 1-2. nozzle; 1-3. swirl plate; 1-4. coaxial positioning sleeve; 2. adjusting nut; 3. ejector pin; 6. transmission shaft; 7. oil pipeline; 8. core shaft; 8-1. first shaft section; 8-2. shaft collar; 8-3. second shaft section; 8-4. sealing cover; 9-1. first return spring; 9-2. second return spring; 10. telescopic connecting rod; 11. bracket; 12. driving motor; 13. sleeve; 100. driving unit. DETAILED DESCRIPTION

[0020] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] Specific implementation method 1: Combination Figures 1 to 4 To describe this embodiment, an adjustable integrated fuel gun of this embodiment includes a drive unit 100, a fuel pipe 7 and an atomizing nozzle 1 that are coaxially fixed in sequence.

[0022] The driving unit 100 includes a sleeve 13 , a driving motor 12 , a bracket 11 , a telescopic connecting rod 10 , a core shaft 8 , a transmission shaft 6 , a thimble 3 , an adjusting nut 2 and a host computer 110 .

[0023] The driving motor 12 is communicatively connected to the host computer 110 . The driving motor 12 and the sleeve 13 are respectively installed at both ends of the bracket 11 . The core shaft 8 is inserted into the sleeve 13 , and a sealing ring is installed on the core shaft 8 .

[0024] The transmission shaft 6 is arranged in the oil delivery pipe 7. The oil delivery pipe 7 is provided with an oil inlet. Both ends of the oil delivery pipe 7 are fixedly connected to the sleeve 13 and the atomizing nozzle 1 respectively.

[0025] The output shaft of the driving motor 12 is fixedly connected to the telescopic connecting rod 10 . The telescopic connecting rod 10 , the core shaft 8 , the transmission shaft 6 and the ejector pin 3 are coaxially fixedly connected in sequence. The ejector pin 3 abuts against the spray hole of the atomizing nozzle 1 .

[0026] An oil delivery hole is opened on the adjusting nut 2 , the adjusting nut 2 is fixed in the oil delivery pipe 7 , and the adjusting nut 2 is threadedly connected to the outer circumferential surface of the ejector pin 3 .

[0027] Specific implementation method 2: Combination Figures 1 to 4 To illustrate this embodiment, the core shaft 8 in this embodiment includes a first shaft segment 8-1, a shaft collar 8-2, and a second shaft segment 8-3 that are integrally provided.

[0028] A first return spring 9 - 1 and a sealing cover 8 - 4 are installed on the first shaft section 8 - 1 , and the first shaft section 8 - 1 is fixedly connected to the telescopic connecting rod 10 .

[0029] A second return spring 9 - 2 and a sealing ring are installed on the second shaft section 8 - 3 , so as to prevent the fuel in the oil pipe 7 from leaking to the outside. The second shaft section 8 - 3 is fixedly connected to the transmission shaft 6 .

[0030] The sleeve 13 includes a first inner hole and a second inner hole, and the inner diameter of the first inner hole is larger than the inner diameter of the second inner hole.

[0031] The sealing cover 8-4 is threadedly connected to the first inner hole, the shaft ring 8-2 is slidingly connected to the first inner hole, and the second shaft section 8-3 is slidingly connected to the second inner hole.

[0032] The two ends of the first return spring 9-1 respectively abut against the shaft collar 8-2 and the sealing cover 8-4, and the two ends of the second return spring 9-2 respectively abut against the shaft collar 8-2 and the bottom of the first inner hole.

[0033] Other components and connection relationships are the same as those in the first embodiment.

[0034] Specific implementation method three: Combination Figures 1 to 4 To illustrate this embodiment, the atomizing nozzle 1 in this embodiment includes a housing 1-1, a nozzle 1-2, a swirl plate 1-3 and a coaxial positioning sleeve 1-4.

[0035] The nozzle 1-2, the swirl plate 1-3 and the coaxial positioning sleeve 1-4 are coaxially arranged in sequence in the housing 1-1, and the housing 1-1 is connected to the end of the oil delivery pipe 7 through threads.

[0036] An oil delivery hole is opened on the coaxial positioning sleeve 1-4, and the ejector pin 3 passes through the coaxial positioning sleeve 1-4 and abuts against the spray hole of the nozzle 1-2.

[0037] Other components and connection relationships are the same as those in the first or second embodiment.

[0038] Specific implementation method four: Combination Figures 1 to 4 This embodiment will be described.

[0039] A sealing ring is installed in the inner hole of the sealing cover 8-4. This arrangement improves the sealing between the sealing cover 8-4 and the first shaft section 8-1, and further prevents the fuel in the oil pipe 7 from leaking to the outside.

[0040] Furthermore, the adjusting nut 2 is connected to the oil pipeline 7 by welding.

[0041] Furthermore, the sleeve 13 and the oil delivery pipe 7 are connected via a flange.

[0042] Furthermore, the sleeve 13 and the bracket 11 are connected via a flange.

[0043] Other components and connection relationships are the same as those in the first, second or third embodiment.

[0044] Specific implementation method five: Combination Figures 1 to 4 To illustrate this embodiment, the telescopic connecting rod 10 in this embodiment is a telescopic universal joint shaft.

[0045] Furthermore, the transmission shaft 6 is a universal transmission shaft. Furthermore, the core shaft 8 and the ejector pin 3 are both fixed to the universal transmission shaft by screws.

[0046] Other components and connection relationships are the same as those in the first, second, third or fourth embodiment.

[0047] Specific implementation method six: combination Figures 1 to 4 In this embodiment, the driving motor 12 is a stepping motor. With this arrangement, the precise rotation of the stepping motor can achieve precise adjustment of the oil injection amount of the atomizing nozzle 1. Other components and connection relationships are the same as those of the specific embodiments 1, 2, 3 or 4.

[0048] How it works

[0049] Combine Figures 1 to 4 The working principle of the present invention is described:

[0050] The bracket 11 is fixed to the outer wall of the boiler, the atomizing nozzle 1 and a part of the oil pipeline 7 are inserted into the furnace, and external fuel enters the oil pipeline 7 from the oil inlet.

[0051] The output shaft of the drive motor 12 is fixedly connected to the telescopic connecting rod 10, and the telescopic connecting rod 10, the core shaft 8, the transmission shaft 6 and the ejector pin 3 are coaxially fixedly connected in sequence. The ejector pin 3 is against the spray hole of the atomizing nozzle 1, and the adjusting nut 2 is fixedly connected to the oil pipe 7, and the adjusting nut 2 is threadedly connected to the ejector pin 3, and the adjusting nut 2 and the coaxial positioning sleeve 1-4 are both provided with oil holes. The oil in the oil pipe 7 flows through the adjusting nut 2, the coaxial positioning sleeve 1-4 and the swirl plate 1-3 in sequence, and is sprayed into the furnace from the nozzle 1-2.

[0052] Therefore, when the driving motor 12 rotates, it drives the telescopic connecting rod 10, the core shaft 8, the transmission shaft 6 and the ejector 3 to rotate together. At the same time, the ejector 3 is displaced along its own axis, and its displacement is absorbed by the telescopic connecting rod 10.

[0053] Therefore, when the ejector pin 3 is close to the nozzle 1-2, the fuel injection amount decreases, and vice versa, when the ejector pin 3 is away from the nozzle 1-2, the fuel injection amount increases. The fuel injection amount can be dynamically adjusted through the cooperation of the drive motor 12 and the host computer 110.

[0054] The present invention has been disclosed as above in terms of preferred embodiments, but this is not intended to limit the present invention. Any simple modifications, equivalent changes, and modifications made to the above implementation cases by any person skilled in the art without departing from the content of the technical solution of the present invention based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An adjustable integrated fuel gun, characterized by: It comprises a driving unit (100), an oil delivery pipe (7) and an atomizing nozzle (1) which are coaxially fixed in sequence; The driving unit (100) comprises a sleeve (13), a driving motor (12), a bracket (11), a telescopic connecting rod (10), a core shaft (8), a transmission shaft (6), a thimble (3), an adjusting nut (2) and an upper computer (110); The drive motor (12) is communicatively connected to the host computer (110), the drive motor (12) and the sleeve (13) are respectively mounted on both ends of the bracket (11), the core shaft (8) is inserted into the sleeve (13), and a sealing ring is mounted on the core shaft (8); The transmission shaft (6) is arranged in the oil delivery pipe (7), and the two ends of the oil delivery pipe (7) are respectively fixed to the sleeve (13) and the atomizing nozzle (1); The output shaft of the driving motor (12) is fixedly connected to the telescopic connecting rod (10), the telescopic connecting rod (10), the core shaft (8), the transmission shaft (6) and the ejector pin (3) are coaxially fixedly connected in sequence, and the ejector pin (3) is against the spray hole of the atomizing nozzle (1); An oil delivery hole is formed on the adjusting nut (2), the adjusting nut (2) is fixedly connected to the oil delivery pipe (7), and the adjusting nut (2) is threadedly connected to the outer circumferential surface of the ejector pin (3).

2. The adjustable integrated fuel gun according to claim 1, characterized in that: The core shaft (8) comprises a first shaft section (8-1), a shaft collar (8-2) and a second shaft section (8-3) which are integrally arranged. A first return spring (9-1) and a sealing cover (8-4) are installed on the first shaft section (8-1), and the first shaft section (8-1) is fixedly connected to the telescopic connecting rod (10); A second return spring (9-2) and a sealing ring are installed on the second shaft section (8-3), and the second shaft section (8-3) is fixedly connected to the transmission shaft (6); The sleeve (13) comprises a first inner hole and a second inner hole, and the inner diameter of the first inner hole is larger than the inner diameter of the second inner hole; The sealing cover (8-4) is threadedly connected to the first inner hole, the shaft ring (8-2) is slidably connected to the first inner hole, and the second shaft section (8-3) is slidably connected to the second inner hole; The two ends of the first return spring (9-1) respectively abut against the shaft collar (8-2) and the sealing cover (8-4), and the two ends of the second return spring (9-2) respectively abut against the shaft collar (8-2) and the bottom of the first inner hole.

3. The adjustable integrated fuel gun according to claim 1, characterized in that: The atomizing nozzle (1) comprises a housing (1-1), a nozzle (1-2), a swirl plate (1-3) and a coaxial positioning sleeve (1-4); The nozzle (1-2), the swirl plate (1-3) and the coaxial positioning sleeve (1-4) are coaxially arranged in sequence in the housing (1-1), and the housing (1-1) is connected to the end of the oil delivery pipe (7) through threads; An oil delivery hole is provided on the coaxial positioning sleeve (1-4), and the ejector pin (3) passes through the coaxial positioning sleeve (1-4) and abuts against the spray hole of the nozzle (1-2).

4. The adjustable integrated fuel gun according to claim 3, characterized in that: A sealing ring is installed in the inner hole of the sealing transparent cover (8-4).

5. The adjustable integrated fuel gun according to claim 4, characterized in that: The telescopic connecting rod (10) is a telescopic universal transmission shaft.

6. The adjustable integrated fuel gun according to claim 5, characterized in that: The transmission shaft (6) is a universal transmission shaft.

7. The adjustable integrated fuel gun according to claim 6, characterized in that: The driving motor (12) is a stepping motor.

8. The adjustable integrated fuel gun according to claim 7, characterized in that: The adjusting nut (2) is connected to the oil delivery pipe (7) by welding.

9. The adjustable integrated fuel gun according to claim 8, characterized in that: The sleeve (13) and the oil delivery pipe (7) are connected via a flange.

10. The adjustable integrated fuel gun according to claim 9, characterized in that: The sleeve (13) and the bracket (11) are connected via a flange.

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