JP2019090557A - Combustion burner and removal method of the same - Google Patents

Abstract

To prevent a burner nozzle from contacting with a casing when a combustion burner including the burner nozzle which enables adjustment of a rotation angle is removed from the casing.SOLUTION: A combustion burner 100 includes: a burner body 20 formed into a cylindrical shape along an axis X; a burner nozzle rotatably connected to a rotary shaft; an adjustment rod 40 which adjusts a rotation angle of the burner nozzle around the rotary shaft relative to an axis X of a nozzle axis; a transmission part 50 which transmits driving force for adjusting a position along the axis X to the adjustment rod 40; a fixing part 30 which fixes the burner nozzle to the casing 200 at a position where the nozzle axis is along the axis X; a temporary fixing pin 60 which switches a state of the adjustment rod 40 between a connection state where the adjustment rod 40 is connected to the fixing part 30 and a non-connection state; and a link pin 70 which switches a state of the end part 42 of the adjustment rod 40 between a connection state where the other end part 42 of the adjustment rod 40 is connected to the transmission part 50 and a non-connection state.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a combustion burner and a method of removing the combustion burner.

Conventionally, among the combustion burners, a burner nozzle connected to a pivot pin attached to one end of the burner main body, and an operating rod having a front end attached to the burner nozzle changes the attachment angle of the burner nozzle to the burner main body A burner with adjustable direction is known (see, for example, Patent Document 1).
In Patent Document 1, a driven lever to which the rotational force of the drive shaft is transmitted to the rear end portion of the actuating rod is connected via a link pin. When carrying out maintenance inspection of the combustion burner, when removing the combustion burner from the air box to which the combustion burner is attached, it is necessary to remove the link pin and disconnect the connection between the operation rod and the driven lever.

JP 2001-153306 A

However, since the combustion nozzle to which the front end of the actuating rod is attached can be pivoted via the pivot pin, when the link pin is removed and the actuating rod and the driven lever are disconnected, the burner nozzle faces downward by its own weight. When it pulls out from a casing or a wind box, it will rotate and it will be in the state which a burner nozzle interferes and it does not pull out.
For this reason, when removing the combustion burner from the casing or the wind box, it is necessary to form a scaffold in the furnace and temporarily fix the burner nozzle from the opening side of the burner nozzle so that it does not rotate. It was a factor to

  The present disclosure has been made in view of such circumstances, and it is an object of the present disclosure to prevent the burner nozzle from coming into contact with the casing when removing the combustion burner provided with the burner nozzle whose rotational angle can be adjusted. Do.

In order to solve the above-mentioned subject, a combustion burner of this indication adopts the following means.
A combustion burner according to an aspect of the present disclosure includes a burner body formed in a cylindrical shape along an axis, and a rotation shaft formed in a cylindrical shape along a nozzle axis and extending horizontally in a direction crossing the axis. And one end of the burner nozzle connected to the burner nozzle vertically above the rotation shaft, and the rotation of the burner nozzle about the rotation axis with respect to the axis of the nozzle axis of the nozzle An adjusting rod for adjusting an angle, a transmission part connected to the other end of the adjusting rod and transmitting a driving force for adjusting a position along the axis to the adjusting rod, and the nozzle axis is along the axis A fixing portion for fixing the burner nozzle together with the adjusting rod to the casing at such a position, a connected state in which the adjusting rod is connected to the fixing portion, and the adjustment Do not connect the first switching unit for switching to the unconnected state, the connected state in which the other end of the adjusting rod is connected to the transmission unit, and the other end of the adjusting rod is not connected And a second switching unit configured to switch between the non-connected state.

According to the combustion burner according to one aspect of the present disclosure, by switching to the connected state in which the adjustment rod is connected to the fixed portion by the first switching portion, the position where the nozzle axis of the burner nozzle is along the axis of the burner body Then, the burner nozzle is fixed in a state where it is not rotated by the rotation shaft by its own weight. After the burner nozzle is fixed in a non-rotating state, the second switching portion switches to a non-connecting state in which the other end of the adjustment rod is not connected to the transmission portion. Ru. Therefore, by removing the fixing portion from the casing, the combustion burner can be removed from the casing while maintaining the state in which the burner nozzle does not rotate by its own weight at a position where the nozzle axis of the burner nozzle is along the axis of the burner body.
Thus, according to the combustion burner according to one aspect of the present disclosure, the burner nozzle contacts the casing when removing the combustion burner provided with the burner nozzle capable of adjusting the rotation angle of the nozzle axis of the burner nozzle with respect to the axis of the burner body. Can be prevented.

In the combustion burner according to one aspect of the present disclosure, the rotating shaft is attached to a tip end of the burner body, and the fixing portion fixes the burner body to the casing by fixing the burner body to the casing. May be fixed.
By doing this, it is possible to prevent the burner nozzle from coming into contact with the casing when removing the combustion burner provided with the burner main body to which the rotating shaft of the burner nozzle is attached at one end.

The combustion burner according to an aspect of the present disclosure may be attached to the fixed portion.
In this way, it is possible to prevent the problem that the burner nozzle contacts the casing when removing the combustion burner provided with the burner nozzle directly attached to the fixed portion from the casing.

In the combustion burner according to one aspect of the present disclosure, a through hole is formed in the adjustment rod at a position where the fixing portion is disposed, and the first switching portion is axially inserted into the through hole. A holding hole may be formed in the fixing portion to hold one end of the shaft-like member inserted into the through hole.
By doing this, the shaft-like member is inserted into the through hole and further held in the holding hole, it is possible to prevent the burner nozzle from rotating.

In the combustion burner according to an aspect of the present disclosure, the holding hole is a long hole whose diameter along the vertical direction is larger than the diameter of the axial member, and the axial member is held by the holding hole. In the state, it may be movable upward along the vertical direction.
By moving the shaft-like member upward in the vertical direction while being held in the holding hole, it is possible to prevent the problem that the adjusting rod interferes with the transmission part when removing the combustion burner from the casing.

  In the combustion burner according to one aspect of the present disclosure, the transmission unit is connected to a lever unit whose one end is connected to the other end of the adjustment rod and to the other end of the lever unit, And a drive shaft rotating about the other end, the drive shaft extending in the horizontal direction, and a tip side shaft connected to the other end of the lever, and the tip side shaft Switching between a connected state in which the distal end side shaft portion is connected to the proximal end side shaft portion and a non-connected state in which the distal end side shaft portion is not connected The configuration may include the third switching unit.

  According to the combustion burner of the above configuration, the distal end side shaft portion and the proximal end side shaft portion which constitute the drive shaft for rotating the lever portion connected to the other end portion of the adjustment rod are disconnected by the third switching portion Can be switched to Since the drive shaft extends in the horizontal direction, the boundary between the distal end side shaft portion and the proximal end side shaft portion is at a position horizontally away from the adjusting rod by the length of the distal end side shaft portion. Therefore, when the distal end side shaft portion and the proximal end side shaft portion are in the non-connected state and the combustion burner is removed from the casing, the problem that the adjustment rod interferes with the drive shaft is prevented.

In the combustion burner of the above-described configuration, the rotation angle of the burner nozzle is made to coincide with another combustion burner which is connected to the proximal end side shaft and is disposed at least either vertically upward or downward. A moving mechanism may be provided.
In this way, the connection state between the proximal end shaft portion and the rotation mechanism is maintained even in the non-connected state where the distal end side shaft portion and the proximal end side shaft portion are not connected by the third switching unit. be able to. Therefore, a desired combustion burner can be removed from a casing, without affecting the rotation angle with respect to the axis of a burner main part of the nozzle axis of the burner nozzle with which other combustion burners are provided.

A method of removing a combustion burner according to an aspect of the present disclosure is a method of removing a combustion burner from a casing, wherein the combustion burner includes a burner body formed in a tubular shape along an axis and a tube along a nozzle axis. And a burner nozzle rotatably connected to a rotating shaft extending in a horizontal direction intersecting the axis, and one end of the burner nozzle is connected to the burner nozzle above the rotating shaft, and An adjusting rod for adjusting a rotation angle about the rotation axis with respect to the axis of the nozzle axis, and the other end of the adjusting rod are connected to the adjusting rod and the position of the adjusting rod is adjusted along the axis A transmission portion for transmitting a driving force, and a fixing portion for fixing the burner nozzle to the casing at a position where the nozzle axis line is along the axis; A first switching step of switching from an unconnected state in which the adjusting rod and the fixing portion are not connected to a connected state in which the adjusting rod and the fixing portion are connected; and the adjusting rod and the fixing portion by the first switching step Switching the connected state in which the other end portion of the adjustment rod and the transmission portion are connected to a disconnected state in which the other end portion of the adjustment rod and the transmission portion are not connected in a connected state in which And 2) a switching step, and a removing step of removing the fixing portion from the casing.
According to the method for removing a combustion burner according to one aspect of the present disclosure, it is possible to prevent the malfunction of the burner nozzle coming into contact with the casing when removing the combustion burner provided with the burner nozzle whose rotation angle can be adjusted.

  According to the present disclosure, it is possible to prevent the burner nozzle from coming into contact with the casing when removing the combustion burner provided with the burner nozzle capable of adjusting the rotation angle from the casing.

It is a perspective view which shows the combustion burner of 1st Embodiment. It is a right view of a combustion burner shown in Drawing 1, and is a figure showing the state where the burner nozzle was turned horizontally. It is a right view of the combustion burner shown in FIG. 1, and is a figure which shows the state which rotated the burner nozzle below. It is the fragmentary sectional view which looked at I part shown in FIG. 2 from upper direction. It is a right view of the combustion burner shown in FIG. 1, and is a figure which shows the state which inserted the pin for temporary fixing. It is a right view which shows the combustion burner of 2nd Embodiment. It is the fragmentary sectional view which looked at II part shown in FIG. 6 from upper direction. It is a right view which shows the combustion burner of 2nd Embodiment, and is a figure which shows the state which moved the adjustment rod upwards. It is the fragmentary sectional view which saw the connection part of the adjustment rod of the combustion burner of 3rd Embodiment, and a transmission part from upper direction. It is the fragmentary sectional view which saw the connection part of the adjustment rod of the combustion burner of 3rd Embodiment, and a transmission part from upper direction. It is the fragmentary sectional view which saw the connection part of the adjustment rod of the combustion burner of 4th Embodiment, and a transmission part from upper direction. FIG. 12 is a cross-sectional view taken along the line II in FIG. It is the fragmentary sectional view which saw the connection part of the adjustment rod of the combustion burner of 4th Embodiment, and a transmission part from upper direction. It is a perspective view which shows the combustion burner of 5th Embodiment.

First Embodiment
Hereinafter, a combustion burner according to a first embodiment of the present disclosure will be described with reference to the drawings. In the description of the embodiment, the upper side indicates the vertically upper side, and the lower side indicates the vertically lower side.
FIG. 1 is a perspective view showing a combustion burner 100 according to the present embodiment. FIG. 2 is a right side view of the combustion burner 100 shown in FIG. 1, showing the burner nozzle 10 in the horizontal direction. FIG. 3 is a right side view of the combustion burner 100 shown in FIG. 1, and shows a state in which the tip end side of the burner nozzle 10 is rotated downward.
In addition, in FIG. 1, illustration of the casing (air box) 200 in which the combustion burner 100 is arrange | positioned while the combustion air is supplied is abbreviate | omitted.

The combustion burner 100 of the present embodiment is an apparatus for supplying and burning a solid fuel containing carbon, for example, to a furnace (not shown) of a boiler. The boiler of the present embodiment uses, for example, pulverized coal obtained by pulverizing coal as a solid fuel containing carbon as pulverized fuel, the pulverized coal is burned by a combustion burner, and pulverized powder capable of recovering the heat generated by the combustion It is a charcoal boiler.
As shown in FIGS. 1 to 3, the combustion burner 100 includes a burner nozzle 10, a burner main body 20, a fixing portion 30, an adjusting rod 40, a transmitting portion 50, and a temporary fixing pin (first switching portion; shaft Shaped member) 60, a link pin (second switching unit) 70, and a moving mechanism 80.

  The burner nozzle 10 has a space between the burner main body 20 and the casing 200 and a mixture of pulverized fuel and combustion air (primary air) supplied from the inside of the cylindrical burner main body 20 along the axis X extending horizontally. It is an apparatus which injects towards the furnace of a boiler the combustion air (secondary air) supplied from these. The burner nozzle 10 is formed in a cylindrical shape whose opening area decreases toward the tip along a nozzle axis Y perpendicular to the opening of the burner nozzle 10. The burner nozzle 10 is pivotally connected to the burner main body 20 via a pivot shaft 11 which extends horizontally and intersects the nozzle axis Y and the axis X perpendicularly to the axis X, and the nozzle axis Y is The tip end side of the burner nozzle 10 can be turned in the vertical direction by turning around the turning axis 11 with respect to the axis X.

  The burner main body 20 distributes a mixture of pulverized fuel and combustion air transported from a pulverized coal crusher (not shown). The burner main body 20 circulates the air-fuel mixture along the axis X and ejects the air-fuel mixture from the tip of the burner nozzle 10 attached to the tip end side via the pivot shaft 11.

  The fixing portion 30 fixes the burner nozzle 10 to the casing 200. The fixing portion 30 is a member formed in an L shape extending in the vertical direction and the horizontal direction, and is connected to the casing 200 by a fastening bolt 31. Further, the burner body 20 is attached to the fixing portion 30 by a fastening bolt 32. The fixing portion 30 fixes the burner nozzle 10 to the casing 200 by fixing the burner main body 20 to the casing 200. In addition, the fixing | fixed part 30 switches to the non-connecting state which is not connected with the casing 200 from the connection state connected with the casing 200 by releasing the fastening state by the fastening bolt 31. As shown in FIG.

  The adjustment rod 40 adjusts the rotation angle θ of the burner nozzle 10 with respect to the rotation axis 11, that is, the rotation angle θ (see FIG. 3) rotated around the rotation axis 11 with respect to the axis X of the nozzle axis Y It is a rod-shaped member. One end 41 of the adjustment rod 40 is connected to the burner nozzle 10 above the pivot 11 by a pin or the like. The other end 42 of the adjustment rod 40 is connected to the transmission unit 50 by a link pin 70. The adjustment rod 40 advances and retracts in the horizontal direction by the driving force transmitted from the transmission unit 50.

  The rotation angle θ of the burner nozzle 10 with respect to the rotation shaft 11 can be adjusted by advancing and retracting the adjustment rod 40 in the horizontal direction. The state shown in FIG. 2 is a state in which the burner nozzle 10 is directed in the horizontal direction (rotational angle θ = 0 degrees). By moving the adjusting rod 40 toward the furnace from the state shown in FIG. 2, the state shown in FIG. 3 is obtained, and the tip end side of the burner nozzle 10 pivots downward about the pivot shaft 11 to turn the pivot angle θ Occur.

  The transmission unit 50 is connected to the other end 42 of the adjustment rod 40 by the link pin 70 and transmits to the adjustment rod 40 a driving force for advancing and retracting along the axis X to adjust its position. As shown in FIGS. 2 and 3, the transmission unit 50 has a transmission lever (lever portion) 51 whose one end is connected to the other end 42 of the adjustment rod 40 by a link pin 70, and the other end of the transmission lever 51. And a drive shaft 52 for rotating the transmission lever 51 about the other end. Further, as shown in FIG. 1, the transmission unit 50 is connected to and coupled to the drive shaft 52 so as to be able to transmit the rotation, and further drives the drive lever 53 driven by the cylinder 300 disposed outside the casing 200. Prepare.

  The cylinder 300 applies a driving force to the drive lever 53 to rotate the drive shaft 52 by advancing and retracting the rod-like member by the pressure or the hydraulic pressure of the compressed air. The transmission unit 50 rotates the drive shaft 52 by the driving force transmitted from the cylinder 300 to the drive lever 53 and connects and connects the transmission lever 51 so as to transmit the rotation of the drive shaft 52, the adjustment rod 40. The driving force is transmitted such that the other end portion 42 of the rear end moves along the axis X.

  The temporary fixing pin 60 is a member formed in a shaft shape, and switches between a connected state in which the adjusting rod 40 and the fixing portion 30 are connected and a non-connected state in which the adjusting rod 40 and the fixing portion 30 are not connected. It is. The temporary fixing pin 60 is used prior to removing the combustion burner 100 from the casing 200, and the temporary fixing pin 60 is not used during operation of the boiler.

  As shown in FIGS. 2 and 3, the adjusting rod 40 is formed with a through hole 43 penetrating in the horizontal direction at a position where the fixing portion 30 is disposed. Further, as shown in FIG. 3, a holding hole 33 for holding one end of the temporary fixing pin 60 inserted into the through hole 43 is formed at a position corresponding to the through hole 43 of the fixing portion 30. The holding hole 33 is a circular hole having substantially the same diameter as one end of the temporary fixing pin 60. 2 and 3 show a state in which the temporary fixing pin 60 is not inserted into the through hole 43 and the holding hole 33.

  The link pin 70 is a member formed in a shaft shape, and in a connected state in which the other end 42 of the adjustment rod 40 and the transmission unit 50 are connected, and the other end 42 of the adjustment rod 40 and the transmission unit 50 are connected. Switching to the unconnected state. The link pin 70 is attached to maintain the connection between the other end 42 of the adjusting rod 40 and the transmission unit 50 during operation of the boiler, and in FIGS. 2 and 3, the link pin 70 is attached. Showing the status. On the other hand, the link pin 70 is removed in order to release the connection between the other end 42 of the adjusting rod 40 and the transmission unit 50 when the combustion burner 100 is removed by pulling out the casing 200 or the like.

  The moving mechanism 80 is a mechanism that moves the combustion burner 100 along the bottom surface 200 a of the casing 200 when the combustion burner 100 is removed from the casing 200. The moving mechanism 80 has a plate-like member 81 extending in the vertical direction, and a roller 82 rotatably mounted below the plate-like member 81. In the moving mechanism 80, the roller 82 is disengaged from the casing 200 in a direction in which the fixing unit 30 and the casing 200 are released by the fastening bolt 31 and the combustion burner 100 is moved away from the furnace (rightward in FIGS. 2 and 3). To move the combustion burner 100 while supporting the weight.

Next, a method of removing the combustion burner 100 of the present embodiment by pulling out the casing 200 or the like will be described.
In the first step, the operator sets the cylinder 300 in the initial state to position the burner nozzle 10 substantially horizontally and the nozzle axis Y to be along the axis X, and the rotation angle θ is approximately 0 degrees. It is. It is set as the state shown in FIG. In the state shown in FIG. 2, the position of the through hole 43 of the adjusting rod 40 and the position of the holding hole 33 of the fixing portion 30 coincide with each other.

  The rotation angle θ rotating about the rotation axis 11 with respect to the axis X of the nozzle axis Y of the burner nozzle 10 is a range in which the burner nozzle 10 does not interfere with the casing 200 when the combustion burner 100 is pulled out from the casing 200 Strict angle management is not necessary if it is a corner of. The rotation angle θ at this time may be, for example, in the range of minus 5 degrees (the tip side of the burner nozzle 10 is slightly upward) to plus 5 degrees (the tip side of the burner nozzle 10 is slightly downward). Most preferred.

In the second step, the worker inserts the temporary fixing pin 60 into the through hole 43 and holds the tip of the temporary fixing pin 60 in the holding hole 33, as shown in FIG. 4 and FIG. FIG. 4 is a partial cross-sectional view of the portion I shown in FIG. 2 as viewed from above, showing a state in which the temporary fixing pin 60 is held in the holding hole 33. As shown in FIG. FIG. 5 is a right side view of the combustion burner 100 shown in FIG. 1, showing a state in which the temporary fixing pin 60 is inserted.
By inserting the temporary fixing pin 60 into both the through hole 43 and the holding hole 33, the adjusting rod 40 and the fixing portion 30 are connected from the non-connecting state where the adjusting rod 40 and the fixing portion 30 are not connected. The rotation angle θ of the burner nozzle 10 is fixed at approximately 0 degrees (horizontal direction).

  In the third step, the worker removes the link pin 70 in a state where the temporary fixing pin 60 is inserted into the through hole 43 and the holding hole 33, and the other end 42 of the adjustment rod 40 and the transmission lever 51 of the transmission portion 50. Are switched to a non-connected state in which the other end 42 of the adjustment rod 40 and the transmission lever 51 of the transmission unit 50 are not connected.

In the fourth step, the worker removes the fixing bolt 31 to remove the fixing portion 30 from the casing 200, and releases the connection between the fixing portion 30 and the casing 200.
By the above first to fourth steps, the state in which the tip end side of the burner nozzle 10 is not rotated downward by its own weight is maintained, and the combustion burner 100 is removed from the casing 200 while the rotation angle of the burner nozzle 10 is fixed horizontally. It can be removed.

  In the fifth step, the operator removes the combustion burner 100 from the casing 200 while holding the burner body 20. FIG. 5 shows a state in which the combustion burner 100 is moved in a direction away from the furnace side. Since the combustion burner 100 according to the present embodiment includes the moving mechanism 80, the operator can easily move the combustion burner 100 to the outside of the casing 200 by supporting the position of the combustion burner 100 in the vertical direction while rotating the roller 82. It can be pulled out and removed. At this time, the rotation angle of the burner nozzle 10 remains fixed horizontally.

According to the combustion burner 100 of the present embodiment described above, the temporary fixing pin 60 is inserted into the through hole 43 and the holding hole 33 to switch to the connected state in which the adjustment rod 40 and the fixing portion 30 are connected. The rotation angle θ of the burner nozzle 10 is fixed at approximately 0 degree (horizontal direction) where the burner nozzle 10 and the casing 200 do not interfere with each other, and the burner nozzle 10 is fixed in a state where it does not rotate around the rotation shaft 11 by its own weight. . The burner nozzle 10 is rotated by its own weight by removing the link pin 70 and switching to a non-connected state where the other end 42 of the adjustment rod 40 and the transmission unit 50 are not connected after the burner nozzle 10 is fixed in a non-rotational state. It will not be maintained. Therefore, by removing the fixing portion 30 from the casing 200, the combustion burner 100 can be pulled out and removed from the casing 200 without interference between the burner nozzle 10 and the casing 200 while maintaining the state in which the burner nozzle 10 does not rotate.
Moreover, thereby, when removing the combustion burner 100 from the casing 200, it is necessary to build a scaffold in a furnace and to temporarily fix rotation angle (theta) of the burner nozzle 10 to substantially 0 degree (horizontal direction) from the opening part side of the burner nozzle 10. It can be eliminated and the workability can be improved.

Second Embodiment
Next, a combustion burner according to a second embodiment of the present disclosure will be described with reference to the drawings. The second embodiment is a modification of the first embodiment, and the description thereof will be omitted as it is the same as the first embodiment except in the case where it is particularly described below.

  In the first embodiment, the holding hole 33 formed in the fixing portion 30 is a circular hole having substantially the same diameter as one end of the temporary fixing pin 60. On the other hand, in the present embodiment, the holding hole 33A formed in the fixing portion 30A is a long hole whose diameter along the vertical direction is larger than the diameter of the temporary fixing pin 60.

  FIG. 6 is a right side view showing the combustion burner 100A of the present embodiment, and shows a state in which the temporary fixing pin 60 is inserted into the holding hole 33A in order to remove the combustion burner 100A from the casing 200. As shown in FIG. 6, the holding hole 33A formed in the fixing portion 30A is a long hole whose diameter along the vertical direction is larger than the diameter of the temporary fixing pin 60.

  FIG. 7 is a partial cross-sectional view of the portion II shown in FIG. 6 as viewed from above. As shown in FIG. 7, the other end 42A of the adjustment rod 40A of the present embodiment has a fork-like shape that sandwiches both end portions of the transmission lever 51A of the transmission portion 50A in the horizontal direction. The shape of the other end 42 </ b> A in this embodiment is advantageous in that the connection with the transmission lever 51 by a pin or the like is ensured. On the other hand, when removing the combustion burner 100A from the casing 200, even if the link pin 70 connecting the other end 42A of the adjustment rod 40A and the transmission lever 51A is removed, the drive shaft 52 is rotated to move the transmission lever 51A. When the position is not moved, it interferes with the other end 42A of the adjustment rod 40A.

  Therefore, in the present embodiment, the holding hole 33A is configured to allow the upward movement of the adjustment rod 40A in the vertical direction so that the other end 42A of the adjustment rod 40A does not interfere with the transmission lever 51A. Specifically, as shown in FIG. 6, the holding hole 33A is a long hole whose diameter along the vertical direction is larger than the diameter of the temporary fixing pin 60.

  FIG. 8 is a right side view showing the combustion burner 100A of the present embodiment, showing a state in which the other end 42A of the adjustment rod 40A is moved upward. In the present embodiment, since the diameter of the holding hole 33A in the vertical direction is larger than the diameter of the temporary fixing pin 60, the movement of the temporary fixing pin 60 in the vertical direction is not restrained. Therefore, as shown in FIG. 8, when the operator lifts the other end 42A of the adjustment rod 40, the other end 42A of the adjustment rod 40 does not interfere with the transmission lever 51A. Therefore, when the combustion burner 100 is removed from the casing 200 by moving the temporary fixing pin 60 upward in the vertical direction while being held in the holding hole 33A, the adjusting rod 40A interferes with the transmission portion 50A. It can be easily avoided.

Third Embodiment
Next, a combustion burner according to a third embodiment of the present disclosure will be described with reference to the drawings. The third embodiment is a modification of the first embodiment, and the description thereof will be omitted as it is the same as the first embodiment except in the case where it is particularly described below.

In the first embodiment, by removing the link pin 70, the connection state in which the adjustment rod 40 and the transmission unit 50 are connected is switched to a non-connection state in which they are not connected, and the combustion burner 100 can be removed from the casing 200. Met.
On the other hand, in the present embodiment, the connected state in which the distal end side shaft portion 52Ba of the drive shaft 52B of the transmission portion 50B and the proximal end side shaft portion 52Bb are connected is switched to the unconnected state. It is made removable from 200.

FIG. 9 is a partial cross-sectional view of the connecting portion of the adjustment rod 40 and the transmission portion 50B of the combustion burner of the present embodiment as viewed from above.
As shown in FIG. 9, the transmission unit 50B of this embodiment includes a transmission lever (lever portion) 51B whose one end is connected to the other end 42 of the adjustment rod 40 by the link pin 70, and the other end of the transmission lever 51B. And a drive shaft 52B which is connected to and connected to the part and rotates the transmission lever 51B about the other end. Further, the drive shaft 52B extends horizontally and is connected and connected so as to be able to transmit rotation to the tip end side shaft portion 52Ba connected and coupled to the other end of the transmission lever 51B and to the tip end side shaft portion 52Ba. And a proximal end shaft 52Bb.

  In the combustion burner of the present embodiment, a connected state in which the distal end side shaft portion 52Ba and the proximal end side shaft portion 52Bb are connected and connected so as to transmit rotation can be connected, the distal end side shaft portion 52Ba and the proximal end side shaft portion 52Bb And a fastening bolt (third switching unit) 90 that switches between the uncoupled state and the uncoupled state. By fastening the fastening bolt 90 inserted into the through hole of the distal end side shaft portion 52Ba to the fastening hole formed in the proximal end side shaft portion 52Bb, the distal end side shaft portion 52Ba and the proximal end side shaft portion 52Bb rotate. It is connected and connected so that it can transmit. On the other hand, by removing the fastening bolt 90 inserted into the through hole of the distal end side shaft portion 52Ba, the connection between the distal end side shaft portion 52Ba and the proximal end side shaft portion 52Bb is released.

  When the connection between the distal end side shaft portion 52Ba and the proximal end side shaft portion 52Bb is released, the combustion burner 100 is removed from the casing 200 even though the connection between the adjustment rod 40 and the transmission lever 51B by the link pin 70 is maintained. It will be possible. Moreover, as in the second embodiment, the worker lifts the other end 42A of the adjustment rod 40 upward as a long hole in which the diameter along the vertical direction of the holding hole 33A is larger than the diameter of the temporary fixing pin 60. There is no need to make a state not to interfere with the transmission lever 51A. FIG. 10 is a partial cross-sectional view of the connection portion of the adjustment rod 40 and the transmission portion 50B as viewed from above, and shows a state in which the combustion burner is removed from the casing 200. As shown in FIG. As shown in FIG. 10, the burner for combustion is removed in the direction away from the furnace while maintaining the connection between the adjustment rod 40 and the transmission lever 51B by the link pin 70.

  Here, since the drive shaft 52B extends in the horizontal direction, the boundary between the distal end side shaft portion 52Ba and the proximal end side shaft portion 52Bb is horizontal from the adjustment rod 40 by the length of the distal end side shaft portion 52Ba. It becomes a position away from the direction. Therefore, when the distal end side shaft portion 52Ba and the proximal end side shaft portion 52Bb are in a non-connected state and the combustion burner is removed from the casing 200, interference with the drive shaft 52B is surely prevented. The work process is simplified.

Fourth Embodiment
Next, a combustion burner according to a fourth embodiment of the present disclosure will be described with reference to the drawings. The fourth embodiment is a modification of the third embodiment, and the description thereof will be omitted as it is the same as the third embodiment except in the case where it is particularly described below.
In this embodiment, a rotation mechanism for making the rotation angles of the burner nozzle 10 coincide with those of the combustion burner of the third embodiment and further arranged at least either in the upper or lower direction in the vertical direction. This embodiment differs from the third embodiment in that 95 is provided.

FIG. 11 is a partial cross-sectional view of the connecting portion of the adjustment rod 40 and the transmission portion 50C of the combustion burner of the present embodiment as viewed from above.
As shown in FIG. 11, the transmission unit 50C of this embodiment includes a transmission lever (lever portion) 51C whose one end is connected to the other end 42 of the adjustment rod 40 by the link pin 70, and the other end of the transmission lever 51C. And a drive shaft 52C connected to the drive unit and connected to transmit the rotation of the transmission lever 51C around the other end. Further, the drive shaft 52C extends in the horizontal direction, and has a distal end side shaft portion 52Ca connected to the other end of the transmission lever 51C, and a proximal end side shaft portion 52Cb connected to the distal end side shaft portion 52Ca. .

  The combustion burner of the present embodiment switches between a connected state in which the distal end side shaft portion 52Ca and the proximal end side shaft portion 52Cb are connected and a non-connected state in which the distal end side shaft portion 52Ca and the proximal end side shaft portion 52Cb are not connected. A fastening bolt (third switching unit) 90 is provided. The distal end side shaft portion 52Ca and the proximal end side shaft portion 52Cb are connected by fastening the fastening bolt 90 inserted into the through hole of the distal end side shaft portion 52Ca to the fastening hole formed in the proximal end side shaft portion 52Cb . On the other hand, by removing the fastening bolt 90 inserted into the through hole of the distal end side shaft portion 52Ca, the connection between the distal end side shaft portion 52Ca and the proximal end side shaft portion 52Cb is released.

  The combustion burner of the embodiment includes a rotation mechanism 95 for matching the rotation angles of the other combustion burners and the burner nozzle 10. The pivoting mechanism 95 includes a connecting lever 95A coupled to the proximal end side shaft portion Cb, and a rod-like member 95B to which the coupling levers 95A provided in the respective pivoting mechanisms 95 of the plurality of combustion burners are coupled together. By advancing and retracting the rod-like member 95B in the vertical direction in the vertical direction by the driving force generated by the cylinder (not shown), the proximal end side shaft portions Cb of the plurality of combustion burners rotate similarly. Move. With the rotation of the proximal end side shaft portion Cb, a driving force for rotating the burner nozzle 10 is transmitted to the adjustment rod 40 from the transmission lever 51C provided in the transmission portion 50C of each combustion burner. Since the connection levers 95A of the plurality of rotation mechanisms 95 are connected to the same rod-like member 95B, the rotation angles of the burner nozzles 10 of the plurality of combustion burners match.

Although FIG. 12 shows an example in which three combustion burners are arranged vertically in the vertical direction, the number is not limited to three, and two or more arbitrary number of combustion burners can be arranged. That is, the rotation mechanism 95 is a mechanism for making the rotation angles of the burner nozzles 10 of the other combustion burners connected to the proximal end side shaft portion 52Cb and arranged at least either upward or downward in the vertical direction If it is
In the present embodiment, the turning mechanism 95 is connected to the proximal shaft 52Cb. Therefore, when the connection between the distal end side shaft portion 52Ca and the proximal end side shaft portion 52Cb is released, the rotation mechanism 95 is disposed on the side of the proximal end side shaft portion 52Cb.

  When the connection between the distal end side shaft portion 52Ca and the proximal end side shaft portion 52Cb is released, the combustion burner can be removed from the casing 200 even if the connection between the adjustment rod 40 and the transmission lever 51C by the link pin 70 is maintained. State. FIG. 13 is a partial cross-sectional view of the connection portion of the adjustment rod 40 and the transmission portion 50C as viewed from above, and shows a state where the combustion burner is removed from the casing 200. As shown in FIG. As shown in FIG. 12, while maintaining the connection between the adjustment rod 40 and the transmission lever 51C by the link pin 70, the combustion burner is pulled out in a direction away from the furnace side and removed.

  According to the present embodiment, even when the distal end side shaft portion 52Ca and the proximal end side shaft portion 52Cb are not connected by the fastening bolt 90, the connection state between the proximal end side shaft portion 52Cb and the rod-like member 95B is Can be maintained. Therefore, the desired combustion burner can be removed from the casing 200 without affecting the rotation angle of the burner nozzle 10 provided in the other combustion burners.

Fifth Embodiment
Next, a combustion burner according to a fifth embodiment of the present disclosure will be described with reference to the drawings. The third embodiment is a modification of the first embodiment, and the description thereof will be omitted as it is the same as the first embodiment except in the case where it is particularly described below.

The combustion burner 100 of the first embodiment is provided with a burner main body 20 for supplying a mixture of pulverized fuel and combustion air (primary air) to the furnace.
On the other hand, the combustion burner 100B of this embodiment does not have a burner main body for supplying a mixture of pulverized fuel and combustion air (primary air) to the furnace, and the combustion supplied to the internal space of the casing 200 Only supply air (auxiliary air) is supplied into the furnace and has a function as an air nozzle.

  As shown in the perspective view of FIG. 14, the combustion burner 100B of the present embodiment includes a burner nozzle 10B (air nozzle), a fixing portion 30B, an adjusting rod 40B, a transmitting portion (not shown), and a temporary fixing pin (not shown). A first switching unit (axial member) 60B and a link pin (not shown). Here, since the transmission unit and the link pin are the same as the transmission unit 50 and the link pin 70 of the first embodiment, the description will be omitted.

In the combustion burner 100B of the present embodiment, the pivot shaft 11B is directly attached to the fixed portion 30B fixed to the casing 200. The burner nozzle 10B is pivotably connected to a pivot shaft 11B extending in the horizontal direction perpendicularly intersecting the axis X.
The adjusting rod 40B is formed with a through hole 43B into which the temporary fixing pin 60B is inserted. In addition, in the fixing portion 30B, a holding hole 33B for holding the temporary fixing pin 60B is formed.

  According to the combustion burner 100B of the present embodiment described above, the temporary fixing pin 60B is inserted into the through hole 43B and the holding hole 33B to switch to the connected state in which the adjustment rod 40B and the fixing portion 30B are connected. The burner nozzle 10B is fixed so as not to rotate by its own weight. After the burner nozzle 10B is fixed in a non-rotated state, the link pin is removed to switch to a non-connected state in which the adjustment rod 40B and the transmission part are not connected, and the state in which the burner nozzle 10B is not rotated is maintained. Therefore, by removing the fixing portion 30B from the casing, the combustion burner 100B can be removed from the casing while maintaining the state in which the burner nozzle 10B does not rotate by its own weight.

10, 10B Burner nozzle 11, 11B Rotating shaft 20 Burner body 30 Fixing part 31, 32 Fastening bolt 33, 33A, 33B Holding hole 40, 40A Adjustment rod 41 One end 42, 42A Other end 43, 43B Through hole 50, 50A , 50B, 50C Transmission part 51, 51A, 51B, 51C Transmission lever (lever part)
52 Drive shaft 52Ba, 52Ca Tip side shaft portion 52Bb, 52Cb Base end side shaft portion 53 Drive lever 60 Temporary fixing pin (first switching portion; shaft member)
70 Link pin (2nd switching unit)
80 Movement mechanism 90 Fastening bolt (3rd switching part)
95 Rotating mechanism 100, 100A, 100B Combustion burner 200 Casing 200 Bottom surface 300 Cylinder X axis Y Nozzle axis

Claims (8)

A burner body cylindrically formed along the axis;
A burner nozzle formed in a tubular shape along the nozzle axis and pivotably connected to a pivot extending horizontally in a direction crossing the axis;
An adjustment rod whose one end is connected to the burner nozzle on the vertical upper side of the rotation shaft and which adjusts a rotation angle about the rotation shaft with respect to the axis of the nozzle axis of the burner nozzle;
A transmitting unit connected to the other end of the adjusting rod and transmitting a driving force to the adjusting rod to adjust a position along the axis;
A fixing portion for fixing the burner nozzle to a casing at a position where the nozzle axis is along the axis;
A first switching unit that switches between a connected state in which the adjusting rod is connected to the fixed portion and a disconnected state in which the adjusting rod is not connected;
A combustion burner, comprising: a second switching unit that switches between a connected state in which the other end of the adjusting rod is connected to the transmission portion, and a disconnected state in which the other end of the adjusting rod is not connected. The pivot shaft is attached to the tip of the burner body,
The combustion burner according to claim 1, wherein the fixing portion fixes the burner nozzle to the casing by fixing the burner main body to the casing.   The combustion burner according to claim 1, wherein the rotating shaft is attached to the fixed portion. The adjustment rod is formed with a through hole at a position where the fixing portion is disposed,
The first switching portion is an axial member inserted into the through hole,
The combustion burner according to any one of claims 1 to 3, wherein a holding hole for holding one end of the shaft-like member inserted into the through hole is formed in the fixing portion. The holding hole is a long hole whose diameter along the vertical direction is larger than the diameter of the axial member,
The combustion burner according to claim 4, wherein the axial member is movable upward along the vertical direction while being held by the holding hole. The transmission unit is a lever unit whose one end is connected to the other end of the adjusting rod, and a drive which is connected to the other end of the lever and rotates the lever around the other end Equipped with an axis,
The drive shaft extends in the horizontal direction and includes a distal end side shaft portion connected to the other end of the lever portion, and a proximal end side shaft portion connected to the distal end side shaft portion.
The third switching unit according to claim 1 or 2, further comprising: a third switching unit configured to switch between a connected state in which the distal end side shaft portion is connected to the proximal end side shaft portion and an unconnected state in which the distal end side shaft portion is not connected. Combustion burner.   7. The apparatus according to claim 6, further comprising: a rotation mechanism for matching the rotation angle of the burner nozzle with another combustion burner connected to the proximal end side shaft portion and disposed at least either vertically upward or downward. Combustion burner as described. A method of removing a combustion burner, comprising: removing the combustion burner from the casing,
The combustion burner is
A burner main body cylindrically formed along the axis, and a burner nozzle cylindrically formed along the nozzle axis and pivotally connected to a pivot extending horizontally in a direction crossing the axis;
An adjustment rod whose one end is connected to the burner nozzle on the vertical upper side of the rotation shaft and which adjusts a rotation angle about the rotation shaft with respect to the axis of the nozzle axis of the burner nozzle;
A transmitting unit connected to the other end of the adjusting rod and transmitting a driving force to the adjusting rod to adjust a position along the axis;
A fixing portion for fixing the burner nozzle to the casing at a position where the nozzle axis line is along the axis line,
A first switching step of switching from an unconnected state in which the adjusting rod and the fixing portion are not connected to a connected state in which the adjusting rod and the fixing portion are connected;
In the connection state in which the adjustment rod and the fixing portion are connected in the first switching step, the connection state in which the other end of the adjustment rod and the transmission portion are connected is the other end portion of the adjustment rod A second switching step of switching to a non-connected state in which the transmission unit and the transmission unit are not connected;
Removing the fixing portion from the casing.

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