CN113203093A - Nozzle of pulverized coal burner - Google Patents

Nozzle of pulverized coal burner Download PDF

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Publication number
CN113203093A
CN113203093A CN202110550316.8A CN202110550316A CN113203093A CN 113203093 A CN113203093 A CN 113203093A CN 202110550316 A CN202110550316 A CN 202110550316A CN 113203093 A CN113203093 A CN 113203093A
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CN
China
Prior art keywords
nozzle
sleeve
limiting
base
pulverized coal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110550316.8A
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Chinese (zh)
Other versions
CN113203093B (en
Inventor
陈敏
王小华
陈宝康
赵俊武
梅振锋
薛晓垒
彭小敏
俞胜捷
刘瑞鹏
赵鹏
丁奕文
朱晋永
姚胜
王祝成
梁昊
王晖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Thermal Power Research Institute Co Ltd
Suzhou Xire Energy Saving Environmental Protection Technology Co Ltd
Original Assignee
Xian Thermal Power Research Institute Co Ltd
Suzhou Xire Energy Saving Environmental Protection Technology Co Ltd
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Application filed by Xian Thermal Power Research Institute Co Ltd, Suzhou Xire Energy Saving Environmental Protection Technology Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Priority to CN202110550316.8A priority Critical patent/CN113203093B/en
Publication of CN113203093A publication Critical patent/CN113203093A/en
Application granted granted Critical
Publication of CN113203093B publication Critical patent/CN113203093B/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2201/00—Burners adapted for particulate solid or pulverulent fuels
    • F23D2201/10—Nozzle tips
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles For Spraying Of Liquid Fuel (AREA)

Abstract

The invention relates to a pulverized coal burner nozzle, which comprises a nozzle main body with a nozzle head part and a nozzle connecting part, and a nozzle base with a base connecting part and a burner connecting part, wherein the nozzle main body is connected with the nozzle connecting part and the nozzle base through the nozzle connecting part and the base connecting part; the other one of the nozzle connecting part and the base connecting part is provided with a sleeve, the sleeve is provided with a limiting groove, when the nozzle connecting part and the base connecting part are connected, the sleeve is inserted into the connecting hole, and the limiting part is inserted into the limiting groove. The nozzle is changed into a split type design, the nozzle body which is easy to wear is connected with the base which is not easy to wear through the matching of the connecting piece and the limiting groove, the connection can be realized through a plugging mode, the elastic part is connected on the connecting piece, the resetting of the connecting piece is facilitated, the quick installation is realized, and the disassembly and assembly efficiency is improved.

Description

Nozzle of pulverized coal burner
Technical Field
The invention relates to the field of pulverized coal burners, in particular to a nozzle of a pulverized coal burner.
Background
The pulverized coal burner refers to a device which can make pulverized coal fully burn in a short time and generate high-temperature eddy current. The pulverized coal burner is provided with a pulverized coal nozzle for spraying pulverized coal mixed combustible gas. The existing pulverized coal nozzle is provided with a pulverized coal feeding pipe for outputting pulverized coal and an air inlet pipe for passing water vapor, the pulverized coal and the water vapor are mixed in a mixing cavity in the pulverized coal nozzle to form pulverized coal mixed combustible gas, a group of partition plates are usually fixed in the middle of a pulverized coal burner to enable the pulverized coal to be spread and dispersed so as to enable the pulverized coal to be fully combusted, however, a thermal power plant usually adopts airflow to convey solid pulverized coal, when high-speed airflow carrying the solid pulverized coal flows through the nozzle, solid particles impact the inner side wall of a pulverized coal channel of the pulverized coal burner to enable the pulverized coal channel to be seriously abraded, so that the service life of the nozzle of the pulverized coal burner is short, the pulverized coal nozzle needs to be replaced periodically, but the existing pulverized coal nozzle adopts a threaded installation mode and is troublesome to install, and the pulverized coal burner nozzle provided by the invention solves the existing defects.
Disclosure of Invention
The invention aims to provide a pulverized coal burner nozzle.
In order to achieve the purpose, the invention adopts the technical scheme that:
a nozzle of pulverized coal burner comprises a nozzle main body and a nozzle base, wherein the nozzle main body and the nozzle base are detachably connected,
the nozzle main body comprises a nozzle head part and a nozzle connecting part, the nozzle base comprises a base connecting part and a combustor connecting part, the nozzle main body and the nozzle base are connected through the nozzle connecting part and the base connecting part,
one of the nozzle connecting part and the base connecting part is provided with a connecting hole and a connecting assembly, the connecting assembly is arranged in the connecting hole, the connecting assembly comprises a connecting piece and an elastic part, the connecting piece is rotatably connected to the wall surface of the connecting hole, the connecting piece is provided with a limiting part, and the elastic part is connected between the connecting piece and the wall surface of the connecting hole;
the other one of the nozzle connecting part and the base connecting part is provided with a sleeve, and the outer peripheral surface of the sleeve is provided with a limit groove;
when the nozzle connecting part and the base connecting part are connected, the sleeve is inserted into the connecting hole, and the limiting part is inserted into the limiting groove.
Preferably, the limiting groove extends around the axis of the sleeve, when the nozzle connecting part and the base connecting part are connected, the limiting part can move in the limiting groove, the stability of connection is improved by rotating around the shaft, and the separation from the axial direction is prevented.
Further preferably, the limiting groove is provided with an inlet section and a limiting section, the cross section width of the inlet section is larger than that of the limiting section, the shape of the limiting part is matched with that of the limiting section, so that the limiting part can be conveniently inserted into the limiting groove, and the connection firmness between the limiting part and the limiting groove after rotation is enhanced.
Still further preferably, the entrance section and the limiting section of the limiting groove are in transition through a round angle or an inclined plane.
Preferably, the connecting piece is further provided with a blocking part for blocking the sleeve from being continuously inserted into the connecting hole, and the blocking part and the limiting part have the same extending direction.
Preferably, a protective shell with a channel formed inside is arranged in the connecting hole, the connecting assembly is arranged on the outer side of the protective shell, and when the nozzle connecting portion and the base connecting portion are connected, the sleeve is communicated with the protective shell.
Further preferably, the connecting piece is further provided with a blocking part for blocking the sleeve from being continuously inserted into the connecting hole, the blocking part and the limiting part have the same extending direction, and a turning point of the connecting piece relative to the wall surface of the connecting hole is positioned at the end part of the blocking part; the side wall of the protective shell is bent towards the inside to form an arc shape, and the circle center of the arc shape coincides with the rotating point.
Preferably, the wall surface of the connecting hole is provided with a stop block, and when the nozzle connecting part and the base connecting part are connected, the limiting part is clamped between the limiting groove and the stop block.
Preferably, when the sleeve is inserted into the connecting hole, the elastic component gives an elastic force for pushing the limiting part to be inserted into the limiting groove.
Preferably, the elastic component comprises a sleeve, a loop bar and a first elastic component, one end of the sleeve is hinged on the hole wall of the connecting hole, one end of the loop bar extends into the sleeve from the other end of the sleeve, the other end of the loop bar is hinged on the connecting piece, and the first elastic component is arranged between one end of the loop bar and the inside of the sleeve.
Further preferably, one end of the loop bar is connected with a convex block, the shape of the convex block is matched with the cross section inside the sleeve, the first elastic piece is connected to the convex block to play a role in guiding and limiting, so that the loop bar can move more smoothly in the sleeve to avoid deviation.
Preferably, the outer circumferential surface of the sleeve is provided with a guide groove, and the guide groove extends along the axial direction of the sleeve.
Further preferably, the guide groove is communicated with the limit groove, and the limit part can move to the limit groove from the guide groove, so that the limit part can slide into the limit groove smoothly; and or the hole wall of the connecting hole is provided with a guide block, and the guide block can move in the guide groove, so that in the connecting process of the nozzle connecting part and the base connecting part, the moving direction of the limiting part is led to the direction of the limiting groove.
Still further preferably, the hole wall of the connecting hole is provided with a guide hole, the guide block is movably arranged in the guide hole, and the guide block is connected in the guide hole through the second elastic piece.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
the nozzle is changed into a split type design, the base which is not easy to wear is arranged at the output end of the combustor, the nozzle main body which is easy to wear is connected with the base through the matching of the connecting piece and the limiting groove, the connection can be realized through a plug-in mode, the installation is simple and convenient, the elastic part is connected on the connecting piece to help the connecting piece to reset or assist in pressing during connection, the quick installation can be realized, and the disassembly and assembly efficiency is improved.
Drawings
FIG. 1 is a perspective view of a nozzle in this embodiment;
FIG. 2 is a schematic exploded view of the nozzle body and the nozzle base (with the connecting assembly inside the nozzle base) in this embodiment;
FIG. 3 is a schematic exploded view of the nozzle body and the nozzle base (the connecting assembly is shown outside the nozzle base) in this embodiment;
FIG. 4 is a front view of the nozzle of this embodiment;
FIG. 5 is a cross-sectional view taken in the direction A-A of FIG. 4;
FIG. 6 is an enlarged schematic view of portion B of FIG. 5;
fig. 7 is a cross-sectional view taken along the line C-C in fig. 4.
In the above drawings: 1. a nozzle head; 2. a nozzle connecting portion; 21. a sleeve; 3. a base connection portion; 31. connecting holes; 32. a protective shell; 4. a burner connection portion; 51. a connecting member; 52. a limiting part; 53. a blocking portion; 54. an elastic member; 541. a sleeve; 542. a loop bar; 543. a first elastic member; 544. a bump; 6. a limiting groove; 61. an inlet and outlet section; 62. a limiting section; 71. a guide groove; 72. a guide block; 73. a guide hole; 74. a second elastic member; 8. a stopper; 91. a placement groove; 92. and a seal.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a pulverized coal burner nozzle, includes nozzle main part, nozzle base, and nozzle main part, nozzle base detachably connect, and nozzle main part, nozzle base are provided with the buggy passageway that sprays the buggy, and nozzle base is used for connecting the output of pulverized coal burner and fixes and communicate nozzle and combustor mutually.
As shown in fig. 1-4, the nozzle body comprises a nozzle head part 1 and a nozzle connecting part 2, the nozzle base comprises a base connecting part 3 and a burner connecting part 4, the nozzle head part 1 is provided with a spray pipe which can spray pulverized coal outwards, and the burner connecting part 4 is connected to the burner through threads, can be matched with the structure of the output end of the existing burner, and can also be connected by other structures.
The nozzle body and the nozzle base are connected through the nozzle connecting part 2 and the base connecting part 3. One of the nozzle connecting part 2 and the base connecting part 3 is provided with a connecting hole 31 and a connecting component, the connecting component is arranged in the connecting hole 31, the other one of the nozzle connecting part 2 and the base connecting part 3 is provided with a sleeve 21, the outer peripheral surface of the sleeve 21 is provided with a limiting groove 6, a channel in the sleeve 21 is a part of a pulverized coal channel, the connecting hole 31 is matched with the outer side of the sleeve 21, when the nozzle connecting part 2 and the base connecting part 3 are connected, the sleeve 21 is inserted into the connecting hole 31, the connecting component is matched and locked with the limiting groove 6, in the present embodiment, the sleeve 21 is provided on the nozzle connecting portion 2, the connecting hole 31 and the connecting member are provided on the base connecting portion 3, and coupling assembling, spacing groove 6 all correspond around the axis of connecting hole 31, sleeve 21 and are provided with the multiunit, and coupling assembling, 6 annular arrays in spacing groove set up.
As shown in fig. 5 and 6, the connecting assembly includes a connecting member 51 and an elastic member 54, the connecting member 51 is rotatably connected to the wall surface of the connecting hole 31, the inner wall surface has a connecting portion, the connecting member 51 is hinged to the connecting portion, the connecting member 51 is rotatable around the hinge point in the axial direction of the connecting hole 31, and the elastic member 54 is connected between the connecting member 51 and the wall surface of the connecting hole 31.
Be provided with spacing portion 52 on the connecting piece 51, barrier 53, and set up with connecting piece 51 is integrative, spacing portion 52 is used for inserting to spacing inslot 6 and will connect the locking, barrier 53 is used for blockking that sleeve 21 continues to insert in connecting hole 31, make spacing portion 52 can aim at spacing groove 6, spacing portion 52, barrier 53 all extend to the direction of keeping away from connecting hole 31 pore wall one side, and barrier 53's extension length is greater than spacing portion 52's extension length, nozzle connecting portion 2, in the base connecting portion 3 connection process, sleeve 21's a tip is first through spacing portion 52, and connecting piece 51 rotates around articulated axial, during the stable connection, spacing portion 52 inserts in spacing groove 6, sleeve 21's a tip supports on barrier 53. In the present embodiment, the extending directions of the stopper portion 52 and the stopper portion 53 are the same, and the connecting member 51, the stopper portion 52, and the stopper portion 53 are integrally provided.
The limiting groove 6 extends on the outer peripheral surface of the sleeve 21 around the axis of the sleeve 21, when the nozzle connecting part 2 and the base connecting part 3 are connected, the limiting part 52 can move in the limiting groove 6, the stability of connection is improved through rotation around the shaft, and the limiting part 52 is prevented from being separated from the limiting groove 6 from the axial direction. Spacing groove 6 has and goes out inlet section 61 and spacing section 62, and the cross-sectional width of inlet and outlet section 61 is greater than the cross-sectional width of spacing section 62, and the shape of spacing portion 52 and the shape looks adaptation of spacing section 62 are convenient for spacing portion 52 to insert to spacing inslot 6 to strengthen the stability of being connected between rotation back spacing portion 52 and the spacing groove 6, can set the structure of spacing section 62 into the tank bottom and be wider than structures such as notch. When the nozzle connecting portion 2 and the base connecting portion 3 are connected, the limiting portion 52 is inserted into the limiting groove 6 from the inlet/outlet section 61, and when the nozzle connecting portion 2 rotates, the limiting portion rotates to the limiting section 62. The inlet and outlet section 61 and the limiting section 62 of the limiting groove 6 are in transition through a round angle or an inclined plane, so that the limiting part 52 can conveniently slide along with rotation. Be provided with dog 8 on the wall of connecting hole 31, dog 8 is corresponding with spacing portion 52's position, and when nozzle connecting portion 2, base connecting portion 3 were connected, spacing portion 52 pressed from both sides between spacing groove 6 and dog 8, and the groove depth of spacing section 62 can slightly be less than the groove depth of going into mouth section 61, and dog 8 is supplementary to be compressed tightly spacing portion 52, makes spacing portion 52 joint in spacing groove 6 inseparabler.
Be provided with the inside protective housing 32 that forms the passageway in the connecting hole 31, this passageway is linked together with the buggy passageway, coupling assembling sets up in the outside of protective housing 32, when nozzle connecting portion 2, base connecting portion 3 are connected, sleeve 21 is linked together with protective housing 32, connecting hole 31 promptly, protective housing 32, sleeve 21 encloses and closes out a space, coupling assembling is located this space, avoid buggy and connection structure to contact, protective housing 32 plays the effect of direction simultaneously, with buggy direction nozzle main part. The rotating point of the connecting piece 51 relative to the wall surface of the connecting hole 31 is located at the end part of the blocking part 53, the side wall of the protective shell 32 is bent inwards to form an arc, the circle center of the arc coincides with the rotating point, and the volume occupied by the space is reduced as much as possible on the premise that the blocking part 53 rotates smoothly.
The elastic member 54 includes a sleeve 541, a sleeve 542, and a first elastic member 543 (a spring is used in this embodiment), wherein one end of the sleeve 541 is hinged to another connecting portion on the wall of the connecting hole 31, one end of the sleeve 542 extends into the sleeve 541 from another end of the sleeve 541, another end of the sleeve 542 is hinged to the connecting member 51, and the first elastic member 543 is disposed between one end of the sleeve 542 and the inside of the sleeve 541. As the sleeve 21 is inserted into or pulled out of the connection hole 31, the connection member 51 rotates, one end portion of the lever 542 moves within the tube 541, and the first elastic member 543 is stretched or compressed. One end of the loop bar 542 is connected with a projection 544, the shape of the projection 544 is matched with the cross section inside the casing 541, and the first elastic piece 543 is connected to the projection 544 to play a role in guiding and limiting, so that the loop bar 542 can move more smoothly in the casing 541, and the deviation is avoided. When the sleeve 21 is inserted into the connection hole 31, the elastic component 54 provides an elastic force for pushing the limiting portion 52 to be inserted into the limiting groove 6, or provides an elastic force for pulling the limiting portion 52 to be pulled out of the limiting groove 6 (so as to facilitate insertion and extraction), and the setting of parameters such as the length of the first elastic component 543 can be specifically changed.
The outer peripheral surface of the sleeve 21 is provided with a guide groove 71, and the guide groove 71 extends in the axial direction of the sleeve 21. The guide groove 71 is communicated with the limiting groove 6, and the limiting part 52 can move to the limiting groove 6 from the guide groove 71, so that the limiting part 52 can slide into the limiting groove 6 smoothly. The hole wall of the connection hole 31 is provided with a guide block 72 corresponding to the guide groove 71, and the guide block 72 can move in the guide groove 71, so that the moving direction of the limiting part 52 is the direction leading to the limiting groove 6 in the connection process of the nozzle connection part 2 and the base connection part 3. The guide groove 71 is matched with the limiting part 52 and the guide block 72 in shape, and in the connection process, the guide block 72 firstly enters the guide groove 71, and the limiting part 52 then enters the guide groove 71. The hole wall of the connecting hole 31 is provided with a guide hole 73, the guide block 72 is movably arranged in the guide hole 73, and the guide block 72 is connected in the guide hole 73 through a second elastic piece 74. The end of the guide block 72 has an inclined surface for sliding into and out of the guide groove 71 and the limit groove 6. In this embodiment, the number of the guide grooves 71, the guide blocks 72, and the guide holes 73 is the same.
As shown in fig. 6 and 7, a placement groove 91 is formed on the wall surface of the connection hole 31 between every two guide holes 73 for placing a sealing member 92, thereby improving sealing performance and preventing pulverized coal from flowing out from between the sleeve 21 and the wall surface of the connection hole 31.
The working principle of the present embodiment is specifically described as follows:
during the installation, install the combustor output with nozzle base's combustor connecting portion 4 through the screw thread earlier, aim at guide block 72 guide way 71, begin to connect nozzle body and nozzle base, insert sleeve 21 connecting hole 31 until sleeve 21 one end support on stopping part 53, spacing portion 52 gets into spacing groove 6 from access & exit section 61 this moment, then rotates nozzle connecting portion 2, and spacing portion 52 removes to spacing section 62, and dog 8 compresses tightly spacing portion 52 in spacing groove 6.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (10)

1. A pulverized coal burner nozzle, characterized by: comprises a nozzle main body and a nozzle base, the nozzle main body and the nozzle base are detachably connected,
the nozzle main body comprises a nozzle head part and a nozzle connecting part, the nozzle base comprises a base connecting part and a combustor connecting part, the nozzle main body and the nozzle base are connected through the nozzle connecting part and the base connecting part,
one of the nozzle connecting part and the base connecting part is provided with a connecting hole and a connecting assembly, the connecting assembly is arranged in the connecting hole, the connecting assembly comprises a connecting piece and an elastic part, the connecting piece is rotatably connected to the wall surface of the connecting hole, the connecting piece is provided with a limiting part, and the elastic part is connected between the connecting piece and the wall surface of the connecting hole;
the other one of the nozzle connecting part and the base connecting part is provided with a sleeve, and the outer peripheral surface of the sleeve is provided with a limit groove;
when the nozzle connecting part and the base connecting part are connected, the sleeve is inserted into the connecting hole, and the limiting part is inserted into the limiting groove.
2. The pulverized coal burner nozzle as set forth in claim 1, wherein: the limiting groove extends around the axis of the sleeve, and when the nozzle connecting part and the base connecting part are connected, the limiting part can move in the limiting groove.
3. The pulverized coal burner nozzle as set forth in claim 2, wherein: the limiting groove is provided with an inlet and outlet section and a limiting section, the cross section width of the inlet and outlet section is larger than that of the limiting section, and the shape of the limiting part is matched with that of the limiting section.
4. The pulverized coal burner nozzle as set forth in claim 1, wherein: the connecting piece is also provided with a blocking part for blocking the sleeve from being continuously inserted into the connecting hole, and the blocking part and the limiting part have the same extending direction.
5. The pulverized coal burner nozzle as set forth in claim 1, wherein: the connecting hole in be provided with the inside protective housing that forms the passageway, coupling assembling set up the outside of protective housing, work as nozzle connecting portion, base connecting portion connect, the sleeve with the protective housing be linked together.
6. The pulverized coal burner nozzle as set forth in claim 1, wherein: the wall surface of the connecting hole is provided with a stop block, and when the nozzle connecting part and the base connecting part are connected, the limiting part is clamped between the limiting groove and the stop block.
7. The pulverized coal burner nozzle as set forth in claim 1, wherein: when the sleeve is inserted into the connecting hole, the elastic component gives elastic force for pushing the limiting part to be inserted into the limiting groove.
8. The pulverized coal burner nozzle as set forth in claim 1, wherein: the elastic component comprises a sleeve, a loop bar and a first elastic piece, one end part of the sleeve is hinged on the hole wall of the connecting hole, one end part of the loop bar extends into the sleeve from the other end part of the sleeve, the other end part of the loop bar is hinged on the connecting piece, and the first elastic piece is arranged between one end part of the loop bar and the inside of the sleeve.
9. The pulverized coal burner nozzle as set forth in claim 1, wherein: the outer circumferential surface of the sleeve is provided with a guide groove, and the guide groove extends along the axial direction of the sleeve.
10. The pulverized coal burner nozzle as set forth in claim 9, wherein: the guide groove is communicated with the limiting groove, and the limiting part can move to the limiting groove from the guide groove; and or the hole wall of the connecting hole is provided with a guide block, and the guide block can move in the guide groove.
CN202110550316.8A 2021-05-20 2021-05-20 Pulverized coal burner nozzle Active CN113203093B (en)

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Application Number Priority Date Filing Date Title
CN202110550316.8A CN113203093B (en) 2021-05-20 2021-05-20 Pulverized coal burner nozzle

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Application Number Priority Date Filing Date Title
CN202110550316.8A CN113203093B (en) 2021-05-20 2021-05-20 Pulverized coal burner nozzle

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CN113203093A true CN113203093A (en) 2021-08-03
CN113203093B CN113203093B (en) 2023-07-25

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106813240A (en) * 2017-03-13 2017-06-09 宁波丰基特种阀门有限公司 Coal nozzle
CN111237749A (en) * 2020-01-19 2020-06-05 佛山兴技源科技有限公司 Connecting device, pulverized coal burner nozzle assembly and assembling and replacing method thereof
CN111578270A (en) * 2020-05-26 2020-08-25 中材海外工程有限公司 Low-nitrogen combustion device for cement kiln tail
CN112762452A (en) * 2021-01-08 2021-05-07 宁波方太厨具有限公司 Injection joint, injection pipe, combustor and gas stove

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106813240A (en) * 2017-03-13 2017-06-09 宁波丰基特种阀门有限公司 Coal nozzle
CN111237749A (en) * 2020-01-19 2020-06-05 佛山兴技源科技有限公司 Connecting device, pulverized coal burner nozzle assembly and assembling and replacing method thereof
CN111578270A (en) * 2020-05-26 2020-08-25 中材海外工程有限公司 Low-nitrogen combustion device for cement kiln tail
CN112762452A (en) * 2021-01-08 2021-05-07 宁波方太厨具有限公司 Injection joint, injection pipe, combustor and gas stove

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