CN112361334A - Gas nozzle and combustor using same - Google Patents

Gas nozzle and combustor using same Download PDF

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Publication number
CN112361334A
CN112361334A CN202011271480.7A CN202011271480A CN112361334A CN 112361334 A CN112361334 A CN 112361334A CN 202011271480 A CN202011271480 A CN 202011271480A CN 112361334 A CN112361334 A CN 112361334A
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CN
China
Prior art keywords
nozzle
gas
core
burner
hole
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.)
Pending
Application number
CN202011271480.7A
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Chinese (zh)
Inventor
罗长兵
陈琦
刘凯
卢华枝
潘叶江
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.)
Vatti Co Ltd
Original Assignee
Vatti Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vatti Co Ltd filed Critical Vatti Co Ltd
Priority to CN202011271480.7A priority Critical patent/CN112361334A/en
Publication of CN112361334A publication Critical patent/CN112361334A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/48Nozzles
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/60Devices for simultaneous control of gas and combustion air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23DBURNERS
    • F23D14/00Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46Details, e.g. noise reduction means
    • F23D14/62Mixing devices; Mixing tubes
    • F23D14/64Mixing devices; Mixing tubes with injectors

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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 discloses a gas nozzle and a burner using the same, wherein the gas nozzle comprises a nozzle body and a nozzle core with a heat resistance function, the nozzle core is arranged in the nozzle body, and a spray hole is arranged in the nozzle core and used for preventing the aperture of the spray hole from changing under the action of thermal expansion and cold contraction. According to the invention, the nozzle core with the spray holes is arranged in the nozzle body, and the nozzle core has a high-temperature resistant effect, so that the problems that the normal combustion of a combustor is influenced and the combustion condition of the combustor is deteriorated due to the change of the flow of gas sprayed from the spray holes because the aperture of the spray holes in the nozzle core is easy to change under the action of expansion with heat and contraction with cold are effectively solved; meanwhile, the quality and the user experience of the nozzle product are improved.

Description

Gas nozzle and combustor using same
Technical Field
The invention belongs to the technical field of combustors, and particularly relates to a gas nozzle and a combustor using the same.
Background
At present, most nozzles are made of copper alloy (brass) through drilling, but because copper is a good heat conductor, the aperture of a spray hole in the nozzle made of the copper alloy is easy to change under the action of thermal expansion and cold contraction, the flow of gas sprayed out from the spray hole is directly changed, the normal combustion of the combustor is influenced, and the combustion condition of the combustor is deteriorated.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a gas nozzle, which solves the problem that the aperture of the nozzle hole in the existing gas nozzle is easy to change under the action of thermal expansion and cold contraction.
The invention also aims to provide a combustor applying the gas nozzle.
In order to achieve the purpose, the technical scheme of the invention is realized as follows: the utility model provides a gas nozzle for the combustor, includes nozzle body, has the nozzle core that hinders the thermal-insulated effect, the nozzle core sets up in the nozzle body, be provided with the orifice in the nozzle core for prevent that the aperture of orifice from changing under the effect of expend with heat and contract with cold.
Preferably, the center of the nozzle core is further provided with a contraction hole and a release hole, and the contraction hole, the spray hole and the radiation hole are communicated in sequence.
Preferably, the contraction hole on the nozzle core is conical, the jet hole is a straight circular hole, and the release hole is an inverted conical hole.
Preferably, an air inlet hole is formed in the side wall of the nozzle body, the nozzle core is located on one side of the air inlet of the nozzle body, and the radiation hole in the nozzle core is communicated with the air inlet hole.
Preferably, a boss is arranged on the inner wall of the nozzle body at a position close to the air inlet, and the end face of the boss abuts against the end face of the nozzle core.
Preferably, this gas nozzle still includes joint spare, be provided with the slot on the inside wall of nozzle body, joint spare sets up the one end of keeping away from the boss at the nozzle core and in the slot with the joint for fix nozzle core (2) in the nozzle body.
Preferably, the gas nozzle further comprises a heat insulating seal between the boss and the nozzle core.
Preferably, the nozzle core is cylindrical, and the outer diameter of the nozzle core is matched with the diameter of the air inlet of the nozzle body; the heat insulation sealing piece is in a hollow cylinder shape, and the outer diameter of the heat insulation sealing piece is matched with the diameter of the air inlet of the nozzle body.
Preferably, the clamping piece is in a regular triangle shape, and the circumscribed circle of the clamping piece is matched with the diameter of the groove.
Preferably, the nozzle core is made of a ceramic material.
Preferably, the outer side walls of the two ends of the nozzle body are provided with threads.
The other technical scheme of the invention is realized as follows: the utility model provides a combustor, includes combustor body and foretell gas nozzle, the gas nozzle sets up in the combustor originally, this internal injection pipe that is provided with of combustor, the gas outlet of nozzle body is connected in injection pipe and the gas nozzle.
The third technical scheme of the invention is realized as follows: a cooker comprises a cooker body and the burner, wherein the burner is arranged in the cooker body.
Compared with the prior art, the nozzle core with the spray holes is arranged in the nozzle body, and the nozzle core has the function of high temperature resistance, so that the problems that the normal combustion of a combustor is influenced and the combustion working condition of the combustor is deteriorated due to the fact that the flow of gas sprayed from the spray holes is changed because the aperture of the spray holes in the nozzle core is easy to change under the action of expansion with heat and contraction with cold are effectively solved; meanwhile, the quality and the user experience of the nozzle product are improved; in addition, the nozzle has good practicability and high cost performance, and is worthy of being widely popularized and used.
Drawings
Fig. 1 is an exploded view schematically illustrating a gas nozzle according to embodiment 1 of the present invention;
fig. 2 is a schematic perspective view of a gas nozzle provided in embodiment 1 of the present invention;
fig. 3 is a cross-sectional view of a gas nozzle provided in embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a nozzle core in a gas nozzle provided in embodiment 1 of the present invention at another view angle;
fig. 5 is a schematic perspective view of a nozzle core in a gas nozzle provided in embodiment 1 of the present invention;
fig. 6 is a schematic cross-sectional perspective view of a gas nozzle provided in embodiment 1 of the present invention;
fig. 7 is a schematic view of the gas flow during the operation of the burner provided in embodiment 2 of the present invention.
In the figure, 1, a nozzle body, 11, an air inlet, 12, a boss, 13, a groove, 14, an air inlet, 15, an air outlet, 16, threads, 2, a nozzle core, 21, spray holes, 22, a contraction hole, 23, a release hole, 3, a clamping piece, 4, a heat insulation sealing piece, 5, an injection pipe, 51, a contraction pipe, 52, a mixing pipe, 53, a diffusion pipe, 6, an air door adjusting component, 61, an air door adjusting plate, 62, an air door fixing plate and 7, an air guide pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or member to which the present invention is directed must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.
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; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The gas nozzle provided by the embodiment 1 of the invention is used for a burner, and comprises a nozzle body 1 and a nozzle core 2 with a heat resistance function, wherein the nozzle core 2 is arranged in the nozzle body 1, and the nozzle core 2 is internally provided with a spray hole 21 for preventing the aperture of the spray hole 21 from changing under the action of thermal expansion and cold contraction.
After adopting above-mentioned scheme, through set up the nozzle core 2 that has orifice 21 in nozzle body 1, because nozzle core 2 has high temperature resistance, and then the effectual aperture of orifice 21 in the nozzle core 2 that has avoided changes easily under the effect of expend with heat and contract with cold, the normal burning of combustor is influenced from orifice 21 blowout gas flow that leads to and changes, the problem of worsening combustor burning operating mode.
Further, as shown in fig. 3, 4 and 5, the nozzle core 2 is further provided at the center thereof with a contraction hole 22 and a radiation hole 23, and the contraction hole 22, the nozzle hole 21 and the radiation hole 23 are sequentially communicated.
Furthermore, the contraction hole 22 on the nozzle core 2 is conical, the jet hole 21 is a straight circular hole, and the release hole 23 is an inverted conical hole.
Through setting up the shrinkage cavity 22 of toper form, the orifice 21 of straight round hole form and the radial hole 23 of the inverted cone form for after the gas got into shrinkage cavity 22 by the air inlet 14 of nozzle body 1, because area of passage changes, the gas was become the dynamic pressure by the static pressure, and spout at a high speed through orifice 21, put the perforation 23 conical surface again and flow into the gas outlet department of nozzle body 1, and then the effectual realization can stabilize the export air current, the purpose of the flow of control flow through the combustor.
Further, as shown in fig. 2 and 3, an air inlet hole 11 is provided on a side wall of the nozzle body 1, the nozzle core 2 is located at one side of the air inlet 14 of the nozzle body 1, and the radiation hole 23 on the nozzle core 2 is communicated with the air inlet hole 11.
Through set up the air inlet hole 11 with putting the hole 23 intercommunication on the lateral wall of nozzle body 1 for after the gas is spout from orifice 21 is high-speed, outside air can be through the air inlet hole 11 on the nozzle body 1 and is drawn into nozzle body 1's gas outlet department and carry out the primary mixing, and the gas, the air-fuel mixture gas of primary mixing here flow into in the combustor through nozzle body 1's gas outlet at a high speed.
Further, as shown in fig. 3 and 6, a boss 12 is provided on the inner wall of the nozzle body 1 at a position close to the air inlet hole 11, and an end surface of the boss 12 abuts against an end surface of the nozzle core 2.
By arranging the boss 12, the connection between the nozzle core 2 and the nozzle body 1 is more stable at the end close to the air inlet hole 11.
Further, as shown in fig. 1 and fig. 3, the gas nozzle further comprises a clamping member 3, a groove 13 is formed in the inner side wall of the nozzle body 1, and the clamping member 3 is arranged at one end, far away from the boss 12, of the nozzle core 2 and clamped in the groove 13, and is used for fixing the nozzle core 2 in the nozzle body 1.
Through being provided with slot 13 on the inside wall at nozzle body 1 to set up joint spare 3 and keep away from the one end of boss 12 and the joint in slot 13 at nozzle core 2, make the inside at nozzle body 1 of fixing more firmly of nozzle core 2.
In specific implementation process, joint spare 3 is the spring steel wire preparation, and the appearance is regular triangle, and wherein one corner is discontinuous, is in the off-state, and its regular triangle circumscribed circle diameter just matches with the slot 13 diameter on the nozzle body 1 inner wall, and the slot 13 width is equivalent with the diameter of joint spare 3, and such mode of setting is convenient for dismantle and the installation.
Further, as shown in fig. 1 and 3, the gas nozzle further comprises a heat insulation seal 4, and the heat insulation seal 4 is located between the boss 12 and the nozzle core 2.
Through set up thermal-insulated sealing member 4 between boss 12 and nozzle core 2, because sealing member 4 has the effect of hindering heat, and then can be effectual the heat transfer that cuts off the combustor burning production, make nozzle core 2 be in the constant temperature state, in addition nozzle core 2 itself has the effect of hindering heat, makes there can not expend with heat and contract with cold the phenomenon, thereby has also avoided the problem that the aperture of orifice 21 changes easily under expend with heat and contract with cold's effect.
Further, the nozzle core 2 is cylindrical, and the outer diameter of the nozzle core 2 is matched with the diameter of the air inlet 14 of the nozzle body 1; the heat insulation sealing piece 4 is in a hollow cylinder shape, and the outer diameter of the heat insulation sealing piece 4 is matched with the diameter of the air inlet 14 of the nozzle body 1.
Further, the nozzle core 2 is made of a ceramic material.
By adopting the ceramic material as the nozzle core 2, the ceramic material is a poor conductor of heat, so that expansion with heat and contraction with cold are avoided, and the problem that the aperture of the spray orifice 21 is easy to change under the action of expansion with heat and contraction with cold is also avoided; in addition, the injection holes 21 are made by adopting an injection molding process, so that the injection holes 21 have high precision and good consistency and cannot deform, the jet flow of the injection holes 21 can be kept stable for a long time, the injection holes 21 can convey constant gas flow to ensure that the thermal load of the combustor is stable, and the combustion condition of the combustor can also be kept stable.
Further, the outer side walls of the two ends of the nozzle body 1 are provided with threads 16.
The connection between the nozzle body 1 and other parts in the combustor is facilitated by the arrangement of the threads 16 on the outer side walls of the two ends of the nozzle body 1.
The use principle of the gas nozzle provided by the embodiment 1 of the invention is as follows: during assembly, the heat insulation sealing element 4 is firstly inserted into the boss 12 from the air inlet of the nozzle body 1 along the air inlet direction, the end face of the heat insulation sealing element 4 is abutted against the boss 12, then the nozzle core 2 is inserted into the nozzle body 1 by the method, the perforating hole 23 on the nozzle core 2 is arranged close to the boss 12, the end face of the perforating hole is abutted against the end face of the heat insulation sealing element 4, finally the clamping element 3 is guided into the nozzle body 1 along the air inlet 14 of the nozzle body 3, and the clamping element 3 is clamped into the groove 13 on the inner side wall of the nozzle body 1, and at the moment, due to the elastic force action of the clamping element 3, the nozzle core 2 is firmly fixed in the ventilation channel of the nozzle body 1.
Example 2
The combustor provided by the embodiment 1 of the invention comprises a combustor body and the gas nozzle provided by the embodiment 1, wherein the gas nozzle is arranged in the combustor body, an injection pipe 5 is arranged in the combustor body, and the injection pipe 5 is connected with an air outlet 15 of the nozzle body 1 in the gas nozzle.
Further, the injection pipe 5 is composed of a contraction pipe 51, a mixing pipe 52 and a diffuser pipe 53 in sequence, and the contraction pipe 51 is arranged at one end, close to the gas nozzle, of the injection pipe 5.
Further, draw and penetrate one side that pipe 5 is close to the gas nozzle and still be provided with air door adjusting part 6, air door adjusting part 6 includes air door regulating plate 61 and air door fixed plate 62 for make the air from the hole that air door regulating plate 61 and air door fixed plate 62 formed get into and draw pipe 5 and gas and carry out the secondary and mix.
As shown in fig. 7, by applying the gas nozzle described in embodiment 1 to the existing burner body, when the gas flows into the gas inlet 14 of the nozzle body 1 of the gas nozzle from the external gas duct 7 and passes through the contraction hole 22 of the nozzle core 2, the static pressure of the gas becomes dynamic pressure due to the change of the passage area, and the dynamic pressure is ejected at high speed through the nozzle hole 21 (i.e. the gas flow control hole) and flows into the gas outlet 15 along the conical surface of the radiation hole 23, and the external air is sucked into the gas inlet 15 through the air inlet 11 (i.e. the primary air inlet) of the nozzle body 1 and is primarily mixed in the gas outlet 15, and the primarily mixed gas and air flow flows into the injection pipe 5 at high speed through the gas outlet 15 and forms negative pressure in the injection pipe 5, so that the air at the end of the injection pipe 5 is forced to enter the furnace end contraction pipe 51 through the pores between the damper adjustment plates 61 to be mixed with the, the burner is further mixed through the mixing pipe 52, and after being uniformly mixed, the mixture reaches the head of the burner through the pressure reduction and stabilization effect of the diffuser pipe 53 to form a certain static pressure, and finally, the mixture is stably combusted after flowing out through the fire holes on the burner, so that the stability of the burner during combustion is effectively improved, and the experience of a user is further improved.
Example 3
The cooker provided by the embodiment 3 of the invention comprises a cooker body and the burner in the embodiment 2, wherein the burner is arranged in the cooker body.
By applying the burner in the embodiment 2 to the existing cooker body, the quality and the often-time competitiveness of cooker products are effectively improved, and the experience of users is improved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a gas nozzle for the combustor, its characterized in that, includes nozzle body (1), has nozzle core (2) of hindering the thermal-arrest effect, nozzle core (2) set up in nozzle body (1), be provided with orifice (21) in nozzle core (2) for prevent that the aperture of orifice (21) from changing under the effect of expend with heat and contract with cold.
2. The gas nozzle as claimed in claim 1, wherein the nozzle core (2) is further provided with a contraction hole (22) and a radiation hole (23) at the center, and the contraction hole (22), the spray hole (21) and the radiation hole (23) are communicated in sequence.
3. A gas burner as in claim 2, wherein said nozzle core (2) is tapered in its constricted orifice (22), said orifice (21) is a straight circular orifice and said discharge orifice (23) is an inverted tapered orifice.
4. A gas nozzle according to claim 3, characterized in that the side wall of the nozzle body (1) is provided with an air inlet hole (11), the nozzle core (2) is positioned at one side of the air inlet (14) of the nozzle body (1), and the radiation hole (23) on the nozzle core (2) is communicated with the air inlet hole (11).
5. A gas burner as claimed in claim 4, characterized in that the inner wall of the burner body (1) is provided with a projection (12) at a location close to the air inlet opening (11), the end face of the projection (12) abutting the end face of the burner core (2).
6. The gas nozzle as claimed in claim 5, further comprising a clamping member (3), wherein a groove (13) is formed in the inner side wall of the nozzle body (1), and the clamping member (3) is arranged at one end of the nozzle core (2) far away from the boss (12) and clamped in the groove (13) for fixing the nozzle core (2) in the nozzle body (1).
7. A gas nozzle according to claim 6, characterized in that it further comprises a heat insulating seal (4), said heat insulating seal (4) being located between the boss (12) and the nozzle core (2).
8. A gas burner as in claim 7, characterized in that the burner core (2) is cylindrical, the outer diameter of the burner core (2) matching the diameter of the gas inlet (14) of the burner body (1); the heat insulation sealing element (4) is in a hollow cylinder shape, and the outer diameter of the heat insulation sealing element (4) is matched with the diameter of the air inlet (14) of the nozzle body (1).
9. A gas burner as claimed in claim 8, characterized in that the snap-in element (3) is regular triangular, the circumscribed circle of the snap-in element (3) matching the diameter of the groove (13).
10. The burner is characterized by comprising a burner body and the gas nozzle as claimed in any one of claims 1 to 9, wherein the gas nozzle is arranged in the burner body, an injection pipe (5) is arranged in the burner body, and the injection pipe (5) is connected with an air outlet (15) of the nozzle body (1) in the gas nozzle.
CN202011271480.7A 2020-11-13 2020-11-13 Gas nozzle and combustor using same Pending CN112361334A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011271480.7A CN112361334A (en) 2020-11-13 2020-11-13 Gas nozzle and combustor using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011271480.7A CN112361334A (en) 2020-11-13 2020-11-13 Gas nozzle and combustor using same

Publications (1)

Publication Number Publication Date
CN112361334A true CN112361334A (en) 2021-02-12

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ID=74515581

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011271480.7A Pending CN112361334A (en) 2020-11-13 2020-11-13 Gas nozzle and combustor using same

Country Status (1)

Country Link
CN (1) CN112361334A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113310048A (en) * 2021-05-31 2021-08-27 武汉理工大学 Combustor and gas-cooker based on high combustion efficiency drainage design

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113310048A (en) * 2021-05-31 2021-08-27 武汉理工大学 Combustor and gas-cooker based on high combustion efficiency drainage design

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