CN219328079U - Replaceable DC burner nozzle - Google Patents

Abstract

The utility model provides a replaceable direct-current burner nozzle, which belongs to the technical field of direct-current burners and comprises an integrated pipe and a nozzle, wherein the integrated pipe is sleeved on the nozzle, the integrated pipe is detachably connected with the nozzle, the nozzle comprises a spray pipe and a ceramic flame gathering ring, the spray pipe comprises a sleeved end and a high-temperature resistant end, the sleeved end is sleeved on the outer wall of the integrated pipe, the ceramic flame gathering ring is arranged in an inner cavity of the spray pipe, the ceramic flame gathering ring is positioned at the high-temperature resistant end, and the pipe diameter of the inner wall of the integrated pipe is the same as the ring diameter of the inner wall of the ceramic flame gathering ring. When the spray head is deformed at high temperature or worn, the spray head can be detached from the integrally formed pipe, the spray head is replaced with a new spray head, the spray head is replaced at present in a simple mode, the efficiency is high, and the time consumption of manpower is short.

Description

Replaceable DC burner nozzle

Technical Field

The utility model belongs to the technical field of direct-current burners, and particularly relates to a replaceable direct-current burner nozzle.

Background

The once-through burner is composed of a group of rectangular or circular nozzles, the sprayed primary air and secondary air are non-rotating once-through jet flows, and in the actual operation of the boiler, the pulverized coal, the primary air and the secondary air are generally fed into the boiler through the once-through burner for combustion.

However, the existing problem is that the pulverized coal is burnt in the burner and purged by primary air, so that the pulverized coal can be fully combusted, the pulverized coal can be discharged from the burner at a higher speed and purged by secondary air, the pulverized coal is fully combusted, and the discharging speed of the pulverized coal from the burner is increased again, therefore, the direct-current jet flow sprayed out of the nozzle of the direct-current burner has extremely high temperature and higher initial speed, the nozzle is easy to deform due to long-time high temperature, the nozzle can be softened and bent, after the nozzle is bent, the direct current sprayed out of the nozzle can be changed, the high-temperature core area of the nozzle is changed, the heating efficiency of the boiler is reduced, meanwhile, after the nozzle is bent, the quartz sand particles sprayed out of the nozzle can collide with the bent nozzle, the nozzle is damaged for a long time, the whole burner is required to be overhauled and disassembled by workers, and even the whole burner is required to be overhauled, and the whole labor intensity is required to be overhauled and worn and abraded greatly.

Disclosure of Invention

Based on the above, the utility model provides a replaceable direct current burner nozzle, which solves the problems that the direct current burner nozzle in the prior art is subjected to high temperature for a long time and is easy to deform, the nozzle is softened and bent, the direct current sprayed out of the nozzle is changed after the nozzle is bent, the high-temperature core area of the nozzle is changed, and meanwhile, after the nozzle is bent, the quartz sand particles have higher speed due to the fact that part of quartz sand particles are doped in coal dust, and the quartz sand particles sprayed out of the nozzle collide with the bent part of the nozzle and abrade the nozzle.

The technical scheme for solving the technical problems is as follows:

the utility model provides a removable direct current burner shower nozzle, includes integrated into one piece pipe and shower nozzle, integrated into one piece pipe cup joints on the shower nozzle, just integrated into one piece pipe with the shower nozzle can dismantle and be connected, the shower nozzle includes spray pipe and pottery and hold up the flame ring, the spray pipe is including cup jointing end and high temperature resistant end, cup jointing end cup joint on the integrated into one piece pipe outer wall, pottery holds up the flame ring setting and is in the inside cavity of spray pipe, just pottery holds up the flame ring and is located high temperature resistant end, the pipe diameter of integrated into one piece intraductal wall with the ring diameter of pottery holds up the flame ring inner wall is the same.

Preferably, the integrated into one piece pipe includes jet pipe and first snap ring, first snap ring sets up on the jet pipe outer wall, just the jet pipe with first snap ring integrated into one piece casting forms, the shower nozzle still includes second snap ring and clamp, the second snap ring sets up on the spray pipe outer wall, the jet pipe cup joints the end that cup joints of spray pipe, works as first snap ring with when the second snap ring is laminated, the clamp joint is in simultaneously on first snap ring and the second snap ring.

Preferably, a containing cavity is formed between the outer wall of the ceramic flame holding ring and the inner wall of the spray pipe, and refractory clay is filled in the containing cavity.

Preferably, the spray head further comprises an open-type circular steel pad, the open-type circular steel pad is arranged at the sleeving end, and the open-type circular steel pad is sleeved on the inner wall of the spray pipe.

Preferably, the open-type circular steel pad is provided with a plurality of layers, and the open-type circular steel pads can be mutually overlapped in sequence.

Preferably, the spray head further comprises a limiting block, wherein the limiting block is arranged in the spray pipe and located at the high temperature resistant end, and the limiting block is used for clamping the ceramic flame holding ring in the inner cavity of the spray pipe.

Preferably, the spray head further comprises a limiting ring, wherein the limiting ring is arranged in the spray pipe and positioned between the sleeving end and the high temperature resistant end, and the limiting ring is used for clamping the ceramic flame holding ring in the inner cavity of the spray pipe.

Preferably, pin key grooves are formed in the first snap ring and the second snap ring, and when the first snap ring is attached to the second snap ring, the pin key grooves in the first snap ring and the second snap ring can be aligned with each other, and pin keys are inserted into the pin key grooves aligned with each other.

Compared with the prior art, the utility model has at least the following advantages:

after the pulverized coal is ignited in the direct-current burner, the pulverized coal is blown by primary air and secondary air, the pulverized coal combustion is accelerated, the flame jet speed is improved, and the pulverized coal is sprayed to the spray head from the integrated forming pipe, and then the spray head is sprayed out from the spray head, the high-temperature resistant end of the spray pipe is provided with the ceramic flame collecting ring, the ceramic flame collecting ring can enable the flame jet from the integrated forming pipe to the spray pipe to form a gathering part, the flame jet sprayed out from the ceramic flame collecting ring forms a high-temperature core area, meanwhile, the high-temperature resistant end is provided with the ceramic flame collecting ring, the ceramic flame collecting ring is ceramic, can bear high temperature, and has small deformation bending degree, and quartz stone particles doped in the flame jet can reduce the abrasion of the spray head when the spray head is bent at high temperature or has abrasion, the time of changing the spray head, the spray head can be detached from the integrated forming pipe, the spray head is replaced, the spray head is prevented from being removed because the spray head of the direct-current burner is high in temperature or has high temperature, the whole combustion efficiency is required to be removed, the spray head is easy to be removed, and the spray head is easy to be removed, the manual is worn and the spray head is changed, and the spray head is easy to be changed in a high-time.

Drawings

FIG. 1 is an isometric view of a replaceable DC burner tip.

FIG. 2 is a cross-sectional view of a replaceable DC burner tip.

Fig. 3 is an isometric view of a spray head.

Fig. 4 is a cross-sectional view of the spray head.

Fig. 5 is an isometric view of an integrally formed tube.

Fig. 6 is an isometric view of a clip.

In the figure: the integrated pipe 10, the jet pipe 110, the first clamping ring 120, the pin key groove 130, the spray head 20, the spray pipe 210, the sleeving end 211, the high temperature resistant end 212, the ceramic flame holding ring 220, the accommodating cavity 221, the second clamping ring 230, the clamping hoop 240, the open circular steel pad 250, the limiting block 260 and the limiting ring 270.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The technical solution of the present utility model will be further described below with reference to the accompanying drawings of the embodiments of the present utility model, and the present utility model is not limited to the following specific embodiments.

It should be understood that the same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components. In the description of the present utility model, it should be understood that, if there are terms such as "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc., that indicate an azimuth or a positional relationship based on the directions or the positional relationships shown in the drawings, it is only for convenience of describing the present utility model and simplifying the description, but not for indicating or suggesting that the apparatus or element to be referred to must have a specific azimuth, be constructed and operated in a specific azimuth, so that the terms describing the positional relationship in the drawings are merely for exemplary illustration and should not be construed as limitations of the present patent, and that the specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.

Referring to fig. 1, a replaceable dc burner nozzle includes an integrated pipe 10 and a nozzle 20, the integrated pipe 10 is sleeved on the nozzle 20, and the integrated pipe 10 is detachably connected with the nozzle 20, the nozzle 20 includes a nozzle 210 and a ceramic flame holding ring 220, the nozzle 210 includes a sleeved end 211 and a high temperature resistant end 212, the sleeved end 211 is sleeved on the outer wall of the integrated pipe 10, the ceramic flame holding ring 220 is disposed in an internal cavity of the nozzle 210, and the ceramic flame holding ring 220 is located at the high temperature resistant end 212, and the pipe diameter of the inner wall of the integrated pipe 10 is the same as the ring diameter of the inner wall of the ceramic flame holding ring 220. After the coal powder is ignited in the direct current burner, the coal powder is blown by primary air and secondary air, the coal powder combustion is accelerated, the flame jet speed is improved, the coal powder is sprayed to the spray head 20 from the inside of the integrated forming tube 10, and then sprayed out from the spray head 20, the ceramic flame collecting ring 220 is arranged at the high temperature resistant end 212 of the spray tube 210, the ceramic flame collecting ring 220 can collect flame jet from the integrated forming tube 10 to the inside of the spray tube 210, the flame jet sprayed out from the ceramic flame collecting ring 220 forms a high temperature core area, meanwhile, the ceramic flame collecting ring 220 is arranged at the high temperature resistant end 212, the ceramic flame collecting ring 220 is ceramic, can bear high temperature, has small deformation and bending degree, when the bending amplitude of the spray head 20 is small, the abrasion of quartz stone particles doped in the flame jet to the spray head 20 can be reduced, the service life of the spray head 20 is prolonged, when the spray head 20 is deformed or worn at high temperature, the spray head 20 can be detached from the integrated forming pipe 10, and new spray head 20 is replaced, so that the problem that a worker is required to detach the whole direct current burner due to deformation or wear at high temperature, cut out deformed or worn parts, and then weld new spray head 20 is avoided, the spray head 20 is replaced in a simple mode, the efficiency is high, the labor time consumption is short, and meanwhile, the pipe diameter of the inner wall of the integrated forming pipe 10 is the same as the ring diameter of the inner wall of the ceramic flame collecting ring 220, so that the inner wall of the integrated forming pipe 10 and the inner wall of the ceramic flame collecting ring 220 are in the same plane, the flame jet in the integrated forming pipe 10 can stably reach the spray pipe 210, and the flame jet direction cannot be changed.

As a further description, the integrally formed pipe 10 includes a jet pipe 110 and a first clamp ring 120, where the first clamp ring 120 is disposed on an outer wall of the jet pipe 110, and the jet pipe 110 and the first clamp ring 120 are integrally cast and formed, so that the jet pipe 110 and the first clamp ring 120 are integrally cast and formed, when the jet pipe 110 and the first clamp ring 120 are subjected to high temperature, deformation of the jet pipe 110 and the first clamp ring 120 is small, and thermal stability is good, if the jet pipe 110 and the first clamp ring 120 are subjected to high temperature, a welding seam between the jet pipe 110 and the first clamp ring 120 is easy to crack, the spray head 20 further includes a second clamp ring 230 and a clamp ring 240, the second clamp ring 230 is disposed on an outer wall of the spray pipe 210, the second clamp ring 230 and the spray head 20 are also integrally cast and formed, the jet pipe 110 is sleeved at a sleeved end 211 of the spray pipe 210, the outer wall of the jet pipe 110 and an inner wall of the spray pipe 210 are mutually deformed, and the jet pipe 110 extends to a deepest depth of the spray pipe 210, and the first clamp ring 230 and the second clamp ring 230 are just attached to the first clamp ring 230 and the second clamp ring 230 and the first clamp ring 230.

Specifically, the clamp 240 is provided with a rotary hinge, which is convenient for opening and closing the clamp 240, and the clamp 240 is further provided with a bolt hole, when the clamp 240 is closed, a bolt is used to pass through the bolt hole, and the clamp 240 is screwed down, so that the clamp 240 tightly clamps the first clamp ring 120 and the second clamp ring 230 together.

To further, a receiving cavity 221 is formed between the outer wall of the ceramic flame holding ring 220 and the inner wall of the nozzle 210, and the receiving cavity 221 is filled with refractory clay. After the wet refractory clay is filled in the accommodating cavity 221, the refractory clay is attached to the outer wall of the ceramic flame holding ring 220 and the inner wall of the spray pipe 210 at the high temperature resistant end 212, the wet refractory clay has adhesion, has the function of fixing the ceramic flame holding ring 220 in the cavity inside the spray pipe 210, has the function of high temperature resistance after the refractory clay dries, and has certain elasticity when the flame jet impacts the inner wall of the ceramic flame holding ring 220, so that the ceramic flame holding ring 220 can be prevented from cracking under the high-speed impact of the flame jet.

Still further, the spray head 20 further includes an open-ended circular steel pad 250, the open-ended circular steel pad 250 is disposed at the coupling end 211, and the open-ended circular steel pad 250 is coupled to the inner wall of the spray pipe 210. When the pipe diameter of the jet pipe 110 is small, but the pipe diameter of the jet pipe 210 is large, when the jet pipe 110 and the jet pipe 210 cannot be matched with each other, the inner wall of the jet pipe 210 is filled with the open-type circular steel pad 250 so as to change the inner diameter of the jet pipe 210, after the inner diameter is reduced, the jet pipe 110 can be excessively matched and sleeved in the jet pipe 210, when the pipe diameter of the jet pipe 110 is thick, the open-type circular steel pad 250 is removed, and the jet pipe 110 is sleeved in the jet pipe 210, so that the problem that the integrally formed pipe 10 and the nozzle 20 cannot be matched with each other due to clearance fit or interference fit between the jet pipe 110 and the jet pipe 210 is avoided.

Specifically, the open-type circular steel pad 250 is provided with a plurality of layers, and the open-type circular steel pad 250 can be stacked on each other in sequence. The addition of several layers of the open-type circular steel pads 250, the open-type circular steel pads 250 have elasticity, which avoids the problem that the jet pipe 110 and the jet pipe 210 cannot be separated from each other due to deformation caused by high temperature after the jet pipe 110 is sleeved in the jet pipe 210.

Still further, the spray head 20 further includes a limiting block 260, the limiting block 260 is disposed in the spray pipe 210 and is located at the high temperature resistant end 212, the limiting block 260 is used for clamping the ceramic flame holding ring 220 in the cavity inside the spray pipe 210, the limiting block 260 is provided with a plurality of blocks, and is in an annular arrangement, generally, the limiting block 260 is provided with four blocks, the ceramic flame holding ring 220 is sleeved on the limiting block 260 formed by the four blocks, so that the ceramic flame holding ring 220 is prevented from shaking in the spray pipe 210, and the ceramic flame holding ring 220 is fastened.

Still further, the nozzle 20 further includes a stop collar 270, where the stop collar 270 is disposed in the nozzle 210 and between the socket end 211 and the high temperature resistant end 212, and the stop collar 270 is used to clamp the ceramic flame holding ring 220 in the internal cavity of the nozzle 210. Specifically, after the wet refractory mortar is filled in the accommodating cavity 221, the limiting ring 270 is directly clamped into the nozzle 210 while the refractory mortar is still wet, the limiting ring 270 is provided with a pin inserted into the refractory mortar, the end surface of the limiting ring 270 contacts with the ceramic flame holding ring 220 in a radial direction and is clamped with the ceramic flame holding ring 220, and then the open circular steel pad 250 is filled into the nozzle 210.

Further, pin key grooves 130 are formed in the first snap ring 120 and the second snap ring 230, and when the first snap ring 120 is attached to the second snap ring 230, the pin key grooves 130 in the first snap ring 120 and the second snap ring 230 can be aligned with each other, and pin keys are inserted into the aligned pin key grooves 130. When the key is inserted into the key groove 130, the first snap ring 120 and the second snap ring 230 are prevented from rotating relative to each other.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (8)

1. The utility model provides a removable direct current combustor shower nozzle, its characterized in that, includes integrated into one piece pipe and shower nozzle, integrated into one piece pipe cup joints on the shower nozzle, just integrated into one piece pipe with the shower nozzle can dismantle and be connected, the shower nozzle includes spray pipe and pottery and hold in flame ring, the spray pipe is including cup jointing end and high temperature resistant end, cup jointing the end and being in on the integrated into one piece pipe outer wall, pottery holds in flame ring setting is in the inside cavity of spray pipe, just pottery holds in flame ring and is located high temperature resistant end, the pipe diameter of integrated into one piece intraductal wall with the ring diameter of pottery holds in flame ring inner wall is the same.

2. The replaceable direct current burner spray head of claim 1, wherein the integrally formed tube comprises a jet tube and a first clamp ring, the first clamp ring is arranged on the outer wall of the jet tube, the jet tube and the first clamp ring are integrally cast, the spray head further comprises a second clamp ring and a clamp ring, the second clamp ring is arranged on the outer wall of the spray tube, the jet tube is sleeved at the sleeved end of the spray tube, and when the first clamp ring is attached to the second clamp ring, the clamp ring is simultaneously clamped on the first clamp ring and the second clamp ring.

3. The replaceable direct current burner tip of claim 1, wherein a receiving cavity is formed between the ceramic flame holding ring outer wall and the lance inner wall, the receiving cavity being filled with refractory mortar.

4. The replaceable dc burner tip of claim 1 further comprising an open-ended circular steel pad disposed at the socket end and the open-ended circular steel pad being socket-jointed to the inner wall of the spout.

5. The replaceable dc burner tip of claim 4 wherein the open-ended circular steel pad is provided with a plurality of layers, the plurality of layers of open-ended circular steel pad being capable of being stacked one upon the other in sequence.

6. The replaceable dc burner tip of claim 1 further comprising a stopper disposed within the nozzle and located at the high temperature end, the stopper configured to clamp the ceramic flame holding ring within the nozzle interior cavity.

7. The replaceable dc burner tip of claim 1 further comprising a stop collar disposed within the nozzle and between the socket end and the high temperature resistant end, the stop collar adapted to clamp the ceramic flame holding ring within the nozzle interior cavity.

8. The replaceable dc burner tip of claim 2 wherein the first and second snap rings are provided with pin keyways, and wherein when the first and second snap rings are in engagement, the pin keyways on the first and second snap rings are also aligned with each other and pin keys are inserted into the aligned pin keyways.

Images