CN211316177U

CN211316177U - Multi-combustion-nozzle mounting structure of square tube combustor

Info

Publication number: CN211316177U
Application number: CN201922115095.2U
Authority: CN
Inventors: 刘津池; 刘继思; 曹晶
Original assignee: Wisdom Energy Technology Co Ltd
Current assignee: Wisdom Energy Technology Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-21
Anticipated expiration: 2029-11-28

Abstract

The utility model provides a many combustion nozzle mounting structure of square tube combustor, the square tube combustor includes nozzle and square tube mixing tube, the square tube mixing tube has the export portion that is used for drawing the air inlet portion and the output gas mixture of penetrating the air, the nozzle sets up the air inlet portion, the square tube combustor includes a plurality of combustion nozzle, combustion nozzle with intercommunication in the square tube mixing tube, it is a plurality of combustion nozzle forms export portion, it is a plurality of combustion nozzle passes through screw thread mounting structure and installs extremely on a side of square tube mixing tube.

Description

Multi-combustion-nozzle mounting structure of square tube combustor

Technical Field

The application relates to the field of combustors, in particular to a multi-combustion-nozzle mounting structure of a square tube combustor.

Background

In a petrochemical device, the emptying torch system can timely treat redundant, harmful and unbalanced waste gas discharged in a production device, can treat unqualified gas generated during test run and start and stop, and can instantly discharge a large amount of gas during accidents, thereby ensuring the normal and safe operation of the device. Traditional venturi combustor only has a gas outlet, for reducing flame length and burning intensity, mostly adopts the mode that sets up the flame holder in gas outlet position, but such setting mode obviously has not been applicable to current novel venturi combustor structure yet.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a many burner nozzle mounting structure of square tube combustor.

In one embodiment, the combustion nozzle is a tubular structure that includes a tube portion and a mounting portion.

In one embodiment, the tube portion is integrally formed with the mounting portion.

In one embodiment, a plurality of through holes are formed in one side face of the square tube mixing tube, and the mounting portion of the combustion nozzle is mounted in the through holes through a threaded mounting structure.

In one embodiment, a threaded structure is arranged in the through hole, a threaded structure is arranged on the outer wall of the mounting portion, and the mounting portion is connected into the through hole in a threaded mode.

In one embodiment, a constriction structure is arranged in the square tube, and the constriction structure is configured to form a constriction mixing section with gradually reduced cross-sectional area and a diffusion mixing section with gradually enlarged cross-sectional area in the square tube.

In one embodiment, the contraction structure is an inner plate disposed on at least one of two opposite inner side walls of the square tube mixer, and the inner plate is bent into the tube so that the inner plate includes a first bent portion and a second bent portion, the contraction mixing section is formed between the first bent portions on the at least one of the two opposite inner side walls, and the diffusion mixing section is formed between the second bent portions on the at least one of the two opposite inner side walls.

In one embodiment, the inner plate is disposed at an end of the square tube facing the air inlet, and the head of the nozzle extends into the convergent-mixing section.

In one embodiment, a premixing section is formed in one side, far away from the inner plate, of the square tube mixing pipe, and the plurality of combustion nozzles are arranged on one side face, located on the premixing section, of the square tube mixing pipe.

To sum up, this application provides a many burner nozzle mounting structure of square tube combustor, and the square tube combustor includes nozzle and square tube mixing tube, and the interval sets up a plurality of burner nozzles on a side wall of square tube mixing tube, and the intercommunication in burner nozzle and the square tube mixing tube for gas mixture gets into a plurality of burner nozzles and outwards sprays flame from the square tube mixing tube. Combustion nozzle detachably installs to the square tube mixing tube on, for example sets up a plurality of through-holes on the square tube mixing tube, and in the through-hole of combustion nozzle installation to the square tube mixing tube through screw thread mounting structure, the mounting means of simplified process of punching and combustion nozzle is convenient for maintain and change. A plurality of combustion nozzles are arranged into a plurality of rows along the length direction of the square tube mixing tube, and two adjacent rows of combustion nozzles are staggered with each other and arranged at intervals, so that flame linkage is facilitated. The combustion nozzle can be designed into a slender pipe, the length-diameter ratio is large, tempering is reduced, and the square tube mixing pipe is prevented from being damaged by overhigh temperature. And the setting mode of a plurality of burning nozzles can disperse flame, reduces flame length and burning intensity, noise reduction.

Drawings

Fig. 1 is a schematic perspective view of the square tube burner of the present invention.

FIG. 2 is a side view of the multi-burner nozzle configuration of FIG. 1.

Fig. 3 is a side sectional view of the square tube burner according to an embodiment of the present invention.

FIG. 4 is a side cross-sectional view of the combustion nozzle of the square tube burner of FIG. 3.

Fig. 5 is a side sectional view of a square tube burner in another embodiment of the invention.

FIG. 6 is a side cross-sectional view of the combustion nozzle of the square tube burner of FIG. 5.

Detailed Description

Before the embodiments are described in detail, it is to be understood that the invention is not limited in its application to the details of construction and the arrangements of components set forth in the following description or illustrated in the drawings. The utility model discloses can be the embodiment that other modes realized. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," "having," and the like, herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. In particular, when "a certain element" is described, the present invention is not limited to the number of the element being one, and may include a plurality of the elements.

As shown in fig. 1-6, the present application provides a multi-burner nozzle mounting structure of a square tube burner. The square tube burner 10 comprises a nozzle 12 and a square tube mixing tube 14, wherein the square tube mixing tube 14 is of a structure with one open end and one closed end, the square tube mixing tube 14 is provided with an air inlet part 16 for injecting air and an outlet part 18 for outputting mixed gas, the nozzle 12 is arranged at the air inlet part 16, and the air inlet part 16 is positioned at the open end of the square tube mixing tube 14. The square tube burner 10 further includes a plurality of combustion nozzles 20 spaced apart on a side of the square tube mixing tube 14, the plurality of combustion nozzles 20 forming the outlet portion 18. A plurality of combustion nozzles 20 are each in communication with the interior of the square tube mixing tube 14 such that the mixed gas can enter the plurality of combustion nozzles 20 from within the square tube mixing tube 14 and spray flames outwardly.

A plurality of combustion nozzles 20 are spaced on the square tube mixing tube 14. In the illustrated embodiment, a plurality of combustion nozzles 20 are arranged in a plurality of rows, for example, 3 rows, along the length of the square tube mixing tube 14, and three rows of combustion nozzles 20 are located at the middle of the square tube mixing tube 14 in the width direction. Two adjacent rows of combustion nozzles 20 are arranged in a staggered manner along the length direction of the square tube mixing tube 14, as shown in fig. 2, the first row of combustion nozzles 20 and the third row of combustion nozzles 20 are arranged in a staggered manner with the second row of combustion nozzles 20 in the length direction of the square tube mixing tube 14, and the first row of combustion nozzles 20 and the third row of combustion nozzles 20 correspond in position in the width direction of the square tube mixing tube 14. Such an arrangement may facilitate cross-flame such that the mixed gas from each combustion nozzle 20 may be immediately combusted.

It should be understood that the number of rows of the combustion nozzles 20 and the arrangement thereof are merely exemplary, and in other embodiments, the number of rows of the combustion nozzles 20 and the arrangement thereof may be designed in other ways according to specific design requirements, and the present invention is not limited thereto.

The number and arrangement of the combustion nozzles 20 can be adjusted according to the combustion treatment amount, so that the combustion effect is optimized.

The combustion nozzle 20 may be designed as an elongated tube, which may increase the length-to-diameter ratio of the combustion nozzle 20, reduce the backfire, avoid burning the wall surface due to too high temperature, and prolong the service life of the square tube mixing tube 14. In the present embodiment, the combustion nozzle 20 is a tubular structure including a pipe portion and a mounting portion, and the length-to-diameter ratio of the combustion nozzle 20 is 3, that is, the length of the pipe portion is set to 30mm, and the inner diameter of the pipe portion is set to 10 mm. In other embodiments, the length to diameter ratio of the combustion nozzle 20 may also be adjusted according to specific design requirements, and the present invention is not limited thereto.

The square tube mixing tube 14 is internally provided with a contraction structure, and the contraction structure is configured to form a contraction mixing section with gradually reduced cross-sectional area and a diffusion mixing section with gradually enlarged cross-sectional area in the square tube mixing tube 14, so that the square tube mixing tube 14 forms a gradually reduced and gradually enlarged venturi structure.

The space between the converging structure inside the square tube mixing 14 and the closed end of the square tube mixing 14 forms a premixing section 22, and a plurality of combustion nozzles 20 are disposed on the side wall of the square tube mixing 14 at the premixing section 22. The design integrates the contraction mixing section and the diffusion mixing section of the traditional Venturi combustor into a mixing pipe, reduces the requirement on arrangement space, and can effectively reduce the length of flame and the combustion noise.

In this embodiment, the square tube mixing tube 14 is the whole square tube that is the cuboid structure, and the contraction structure is the inner panel 24 that sets up on at least one relative two inside walls in the square tube mixing tube 14. In the illustrated embodiment, the constriction is inner plates 24 disposed on four inner sidewalls of the square tube 14, and the inner plates 24 on each of two opposing inner sidewalls of the inner plates 24 on the four inner sidewalls are bent inwardly toward each other to form bent plates, such that each inner plate 24 includes a first bent portion 24a and a second bent portion 24 b. The four first bent portions 24a form a convergent-divergent mixing section 26, the four second bent portions 24b form a divergent mixing section 28, the four inner plates 24 form a throat portion 30 between the bent portions, and the inner plates 24 form a premix section 22 in the space portion away from the air inlet portion 16, thereby forming a square venturi structure design, i.e., the performance of the square venturi structure design is in accordance with the venturi structure design.

In this embodiment, the inner plate 24 is formed by a sheet metal process, and the straight plate is bent and welded. The inner plate 24 may be welded directly within the square tube 14 by welding, for example, the end of the inner plate 24 facing the air intake 16 is welded to the inside of the end of the square tube 14 and the end of the inner plate 24 remote from the air intake 16 is welded to the inside wall of the square tube 14. The plurality of combustion nozzles 20 are arranged on the upper end wall surface of the square tube mixing tube 14, which is positioned on the premixing section 22 and close to one side of the closed end of the square tube mixing tube, the head parts of the nozzles 12 extend into the contraction mixing section 26, and when the nozzles 12 spray fuel gas, air is injected into the square tube mixing tube 14 from the air inlet part 16 at the open end.

It should be understood that the inner plates 24 are disposed on the four inner side walls of the square tube mixing tube 14 on the side of the air inlet portion 16 in the above embodiments, and other embodiments are possible according to specific design requirements, for example, the inner plates 24 are disposed on the two opposite inner side walls of the square tube mixing tube 14 on the side of the air inlet portion 16, and the two inner plates 24 on the two opposite inner side walls are bent oppositely.

The mixing tube 14 is provided with a burner attachment structure on a side opposite the burner nozzle 20, which is used to attach the venturi burner to a fixed structure. In the illustrated embodiment, the burner fixing structure is two fixing plates 34 disposed on the lower end surface of the square tube mixing 14, wherein one fixing plate 34 is disposed at an end of the square tube mixing 14 near the air intake portion 16, and wherein the other fixing plate 34 is disposed at an end of the square tube mixing 14 near the closed end thereof.

In the injection type combustion device, a skid-mounted outer frame can be arranged outside the injection type combustion device so as to facilitate the fixing and transportation of the injection type combustion device. Therefore, the fixing piece 34 can be designed as a first piece 34a and a second piece 34b that are integrally connected and perpendicular to each other, the first piece 34a is fixed to the side wall of the square tube mixing pipe 14 facing the side of the skid-mounted outer frame, for example, by welding, and the second piece 34b is detachably connected and fixed to the skid-mounted outer frame, for example, by screws.

A plurality of combustion nozzles 20 are removably mounted to the square tube mixing tube 14.

In some embodiments, as shown in FIGS. 3-4, the combustion nozzle 20 may be mounted to the square tube mixing tube 14 by a threaded mounting structure, in which case the multi-combustion nozzle mounting structure of the square tube combustor is a threaded mounting structure. More specifically, the combustion nozzle 20 includes a tube portion 36 and a mounting portion 38, and the tube portion 36 and the mounting portion 38 are, for example, integrally molded. A plurality of through holes 40 are formed in the square tube mixing tube 14, each combustion nozzle 20 is correspondingly installed in one through hole 40, a thread structure is arranged in each through hole 40, holes can be drilled and the inner threads of the holes can be machined through a hot-melting drilling process, correspondingly, the thread structure is machined on the outer wall surface of the installation portion 38 of each combustion nozzle 20, and the installation portion 38 of each combustion nozzle 20 is connected into the through hole 40 in a threaded mode during installation.

In some embodiments, as shown in FIGS. 5-6, the combustion nozzle 20 may be mounted to the square tube mixing tube 14 by a rivet connection, in which case the multi-burner mounting structure of the square tube burner is the rivet connection mounting structure for the combustion nozzle 20. More specifically, each combustion nozzle 20 includes a tube portion 42 and a mounting portion 44, the mounting portion 44 being located at an end portion of the tube portion 42, the tube portion 42 and the mounting portion 44 being integrally formed. The square tube mixing pipe 14 is provided with a plurality of through holes 46, the through holes can be drilled by adopting a hot-melting drilling process, the mounting parts 44 of the combustion nozzles 20 can be directly riveted and mounted into the through holes 46 in a riveting mounting mode, and the mounting parts 44 are the riveting mounting structures. The tube portion 42 and the mounting portion 44 of the combustion nozzle 20 cooperate with the through-hole 46 to fixedly mount the combustion nozzle 20 within the through-hole 46 by a rivet-fitting manner. Specifically, the mounting portion 44 includes a first enlarged portion 48a and a second enlarged portion 48b spaced apart along the axial direction of the tube portion 42, wherein the second enlarged portion 48b is an existing structure of the combustion nozzle 20, and the first enlarged portion 48a is formed by pulling a rivet, for example, by pulling the tube portion 42 to be contracted by the rivet. A catch 48c is formed between the first enlarged portion 48a and the second enlarged portion 48 b. The first enlarged portion 48a has a smaller cross-sectional area than the second enlarged portion 48 b.

In some embodiments, the combustion nozzle 20 may be used directly with riveted finished pipe, such as a blind rivet nut.

During installation, the pipe portion 36 of the combustion nozzle 20 penetrates through the through hole 46 to leak out of the square tube mixing pipe 14, the second expansion portion 48b abuts against the inner wall, located at the through hole 46, of the square tube mixing pipe 14, the rivet gun is aligned with the inside of the combustion nozzle 20 and inserted into the pipe portion 42 from the side, far away from the second expansion portion 48b, of the pipe portion, the pipe portion is fixed through the locking threads, the rivet gun is started, the combustion nozzle 20 is locked to the square tube mixing pipe 14, the pipe portion 42 is pulled by the rivet gun to shrink towards the direction of the second expansion portion 48b in the riveting process, and then the first expansion portion 48a is formed, and installation is completed. At this time, the holding portion 48c is clamped in the through hole 46, the first enlarged portion 48a is clamped outside the through hole 46, and the second enlarged portion 48b is clamped inside the through hole 46. And after the installation is finished, the rivet pulling gun is rotated reversely until the rivet pulling gun is separated from the combustion nozzle, and then the next combustion nozzle can be installed.

It should be understood that the rivet mounting structure of the combustion nozzle described above is only one embodiment of the present invention, and in other embodiments, other rivet mounting methods may be used to form other rivet mounting structures.

The concepts described herein may be embodied in other forms without departing from the spirit or characteristics thereof. The particular embodiments disclosed should be considered illustrative rather than limiting. The scope of the invention is, therefore, indicated by the appended claims rather than by the foregoing description. Any changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The utility model provides a many combustion nozzle mounting structure of square tube combustor, the square tube combustor includes nozzle and square tube hybrid tube, the square tube hybrid tube has the export portion that is used for drawing the portion of admitting air and the output gas mixture of penetrating the air, the nozzle sets up the portion of admitting air, a serial communication port, the square tube combustor includes a plurality of combustion nozzle, combustion nozzle with intercommunication in the square tube hybrid tube, a plurality of combustion nozzle forms export portion, a plurality of combustion nozzle passes through screw thread mounting structure and installs to on the side of square tube hybrid tube, combustion nozzle includes pipe portion and installation department, be equipped with a plurality of through-holes on the side of square tube hybrid tube, combustion nozzle's installation department passes through screw thread mounting structure and installs to in the through-hole, be equipped with the helicitic texture on the outer wall of installation department, the mounting portion is threaded into the through hole.

2. The multi-burner nozzle mounting structure of a square tube burner of claim 1, wherein the burner nozzle is a tubular structure.

3. The multi-combustion nozzle mounting structure of a square tube burner as claimed in claim 2, wherein the tube portion is integrally formed with the mounting portion.

4. The multi-combustion nozzle mounting structure of a square tube burner of claim 1, wherein a constriction is provided in the square tube mixing tube, the constriction being configured to form a converging mixing section of gradually decreasing cross-sectional area and a diverging mixing section of gradually increasing cross-sectional area in the square tube mixing tube.

5. The multiple combustion nozzle mounting structure of a square tube burner of claim 4, wherein the constriction is an inner plate disposed on at least one of the opposing inner sidewalls of the square tube mixer, the inner plate being bent into the tube such that the inner plate includes a first bend and a second bend, the first bend on the at least one of the opposing inner sidewalls forming the convergent-divergent mixing section therebetween, and the second bend on the at least one of the opposing inner sidewalls forming the divergent-divergent mixing section therebetween.

6. The multi-combustion nozzle mounting structure of a square tube burner of claim 5, wherein the inner plate is disposed at an end of the square tube facing the air intake portion, and a head portion of the nozzle protrudes into the convergent-mixing section.

7. The multi-burner installation structure of a square tube burner of claim 5, wherein a side of the square tube mixing tube remote from the inner plate forms a premixing section, and the plurality of burner nozzles are disposed on a side surface of the square tube mixing tube located at the premixing section.