JP2018149575A - Correction apparatus and correction method of lance tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily-carriable correction apparatus.SOLUTION: A correction apparatus 1 includes a rod-like substrate 10, a pair of rope bodies 20 fitted to both ends of the substrate 10, and wound around a lance tube, and a jack 30 detachably provided on a center part of the substrate 10, for widening an interval between the substrate 10 and the lance tube. Since the rope bodies 20 can be arrayed along the substrate 10, and the jack 30 can be detached from the substrate 10, the correction apparatus 1 can be stored compactly and carried easily.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lance tube straightening device and a straightening method. More particularly, the present invention relates to a correction instrument and a correction method for correcting the bending of a lance tube provided in a soot blower.

  The smelting gas discharged from the auto-smelting furnace is guided to the exhaust heat boiler, and the heat is recovered. If smoke ash adheres to the water wall tube inside the exhaust heat boiler, the thermal conductivity decreases and the heat recovery efficiency decreases. In addition, the smoke ash reacts with moisture contained in the smelting gas and causes corrosion of the water wall pipe. Therefore, the exhaust heat boiler is provided with a soot blower for dropping the attached smoke ash.

  The soot blower includes a lance tube configured in a telescopic shape. During use, the lance tube is extended and inserted into the exhaust heat boiler, and the smoke ash is dropped by blowing air from the tip of the lance tube. During standby, the lance tube is shrunk and removed from the exhaust heat boiler.

  Since the lance tube is a long tubular member, it is bent due to its own weight or heat in the exhaust heat boiler as it is repeatedly used. When the lance tube bends, the bend needs to be corrected. Patent Documents 1 and 2 disclose an instrument for correcting the bending of a lance tube.

  The exhaust heat boiler is installed at a high place considering that the smelting gas discharged from the auto-smelting furnace rises. In addition, the scaffolding provided in the exhaust heat boiler has only a minimum size necessary to reduce construction costs. Therefore, in general, the lance tube is installed at a high place and a narrow place. When the lance tube is bent, it is necessary to carry the correction tool to the high place and the narrow place. In addition, since a plurality of exhaust heat boilers are installed apart from each other, it is necessary to carry a correction tool every time it is necessary to correct the lance tube. However, since the conventional orthodontic appliance is heavy and bulky, it is difficult to move up and down a narrow staircase with the orthodontic appliance. When there was no transportation means around the waste heat boiler, it was necessary to arrange a crane.

Japanese Utility Model Publication No. 4-64417 JP 2014-156842 A

In view of the above circumstances, an object of the present invention is to provide an orthodontic appliance that is easy to carry.
Moreover, it aims at providing the correction method of the lance tube using the correction tool.

The lance tube straightening device according to the first aspect of the present invention is a rod-shaped base material, a pair of cords attached to both ends of the base material and hung around the lance tube, and removable at the center of the base material And a jack that extends between the base material and the lance tube.
The lance tube straightening device of the second invention is the first invention according to the first invention, an installation plate provided at the bottom of the jack, a receiving material provided at the center of the base material and having a recess into which the installation plate fits, It is characterized by providing.
The lance tube straightening device of the third invention is the first invention, the installation plate provided at the bottom of the jack, the holding member provided at the center of the base material, the installation plate slide fit, It is characterized by providing.
According to a fourth aspect of the present invention, there is provided a correction method for a lance tube, wherein the bending of the lance tube is corrected by using the correction instrument of the first, second, or third aspect.

According to the first invention, the cable body can be placed along the base material, and the jack can be removed from the base material, so that the correction tool can be stored in a compact manner and easy to carry.
According to the second invention, the jack can be attached to the base material simply by fitting the installation plate to the receiving material.
According to the third aspect of the invention, since the installation plate is slidably fitted to the holding material, the jack does not tilt with respect to the base material and is safe.
According to the fourth invention, the bending of the lance tube can be corrected.

It is a front view of the correction tool concerning a 1st embodiment of the present invention. FIG. 2 is a partial cross-sectional view taken along line II-II in FIG. 1. FIG. 3 is a partial sectional view taken along line III-III in FIG. 1. It is a top view of the base material of the orthodontic appliance. It is the front partial enlarged view of the correction tool which concerns on 2nd Embodiment of this invention. FIG. 6 is a partial cross-sectional view taken along line VI-VI in FIG. 5. It is explanatory drawing of a soot blower.

Next, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
(Lance tube)
First, the lance tube will be described.
As shown in FIG. 7, the soot blower 100 includes a lance tube 110. The lance tube 110 is constituted by an inner tube 111 and an outer tube 112 in a telescopic shape. An air supply source 130 is connected to the proximal end portion of the inner tube 111 via a head valve 120. An injection nozzle 113 is provided at the tip of the outer tube 112. The air supplied from the air supply source 130 passes through the lance tube 110 and is jetted from the jet nozzle 113.

  In use, the lance tube 110 is extended and inserted into the exhaust heat boiler 200. Smoke ash is dropped by ejecting air from the injection nozzle 113. During standby, the lance tube 110 is contracted and removed from the exhaust heat boiler 200.

  Since the lance tube 110, particularly the outer tube 112, is a long tubular member, the lance tube 110 is bent due to its own weight or heat in the exhaust heat boiler 200 as it is repeatedly used. When the bending of the outer tube 112 becomes large, it is necessary to correct the bending. A correction tool is used to correct the bending of the outer tube 112.

(Correcting appliance)
Next, the correction tool 1 according to the first embodiment of the present invention will be described.
As shown in FIG. 1, the correction tool 1 includes a base material 10, a pair of cable bodies 20, 20, and a jack 30. The base material 10 is a rod-shaped member having a length necessary for correcting the outer tube 112. The base material 10 is formed by processing, for example, H-shaped steel or C-shaped steel. The corners may be cut off or the holes 15 (see FIG. 4) may be formed so as not to affect the strength.

  Attachment holes 11 and 11 are formed at both ends of the base material 10. The pair of cable bodies 20 are attached to both ends of the base material 10 using the attachment holes 11 and 11. An annular reinforcing plate 12 may be joined around the mounting hole 11 to reinforce the portion around the mounting hole 11.

  As shown in FIG. 2, both ends of the cable body 20 are fixed to the mounting holes 11 by mounting brackets 21 such as shackles. When correcting the outer tube 112, the cord body 20 is wound around the outer tube 112. The cable body 20 is not particularly limited as long as it has a strength necessary for correcting the outer tube 112, but a twisted steel wire, a chain, or the like can be used.

  As shown in FIGS. 3 and 4, a receiving material 13 having a rectangular recess 13 a is provided on the upper surface of the central portion of the base material 10. On the other hand, a rectangular installation plate 31 is provided on the bottom (cylinder cap) of the jack 30. The jack 30 can be attached to the central portion of the substrate 10 simply by fitting the installation plate 31 into the recess 13 a of the receiving member 13. Moreover, the jack 30 can be detached from the base material 10. The installation plate 31 may be fixed with a bolt or the like so as to be removable from the jack 30.

  A support member 32 having a U-shaped cross section is provided at the rod tip of the jack 30. By fitting the outer tube 112 into the recess of the support member 32, the outer tube 112 can be firmly supported so as not to be displaced. The support member 32 is preferably provided so as to be removable from the jack 30.

  As the jack 30, various types such as a hydraulic type, a pneumatic type, and a mechanical type can be used.

(Correction method)
The following operation may be performed to correct the bending of the outer tube 112 using the correction device 1 described above.
As shown in FIG. 1, a jack 30 is attached to the central portion of the base material 10. The cable body 20 is wound around the outer tube 112 and attached to both ends of the base material 10. At this time, a ring is formed by the cable body 20 by attaching and detaching the mounting bracket 21, and the outer tube 112 is passed inside the ring (see FIG. 2).

  The jack 30 is extended, and the support member 32 is pressed against the convex portion generated by the bending of the outer tube 112. Here, the convex side of the outer tube 112 is directed to the jack 30. A force is applied to the outer tube 112 so that the jack 30 is further extended to expand the space between the base material 10 and the outer tube 112. The bending of the outer tube 112 can be corrected by the above operation.

  According to the correction tool 1 of the present embodiment, the cable body 20 can be placed along the base material 10 and the jack 30 can be removed from the base material 10, so that the correction tool 1 can be stored compactly. Therefore, it is easy to carry to high places and narrow places.

[Second Embodiment]
Next, the correction tool 2 according to the second embodiment of the present invention will be described.
As shown in FIGS. 5 and 6, the correction tool 2 of the present embodiment has a configuration in which the holding material 14 is provided on the base material 10 instead of the receiving material 13 in the correction tool 1 of the first embodiment.

  The holding member 14 is formed in a U-shaped cross section on three sides, and the edges of the three sides of the installation plate 31 are fitted. In order to attach the jack 30 to the base material 10, the installation plate 31 may be slid onto the holding material 14. Since the installation plate 31 is slidably fitted to the holding material 14, the jack 30 does not tilt with respect to the base material 10 when the bending of the outer tube 112 is corrected, which is safe.

  Note that the holding material 14 may be formed in a U-shaped cross section only on two opposite sides. Even in this case, the two opposite edges of the installation plate 31 are fitted into the holding member 14.

DESCRIPTION OF SYMBOLS 1, 2 Straightening instrument 10 Base material 11 Mounting hole 13 Receiving material 14 Holding material 20 Cable body 21 Mounting bracket 30 Jack 31 Installation board 32 Support material

Claims (4)

A rod-shaped substrate;
A pair of cords attached to both ends of the base material and hung around a lance tube;
A lance tube correction tool, comprising: a jack that is detachably provided at a central portion of the base material and that extends between the base material and the lance tube. An installation plate provided at the bottom of the jack;
The lance tube correction device according to claim 1, further comprising: a receiving material provided at a central portion of the base material and having a recess into which the installation plate is fitted. An installation plate provided at the bottom of the jack;
The lance tube correction device according to claim 1, further comprising: a holding member that is provided at a central portion of the base material and on which the installation plate is slidably fitted. A method of correcting a lance tube, wherein the bending of the lance tube is corrected using the correction device according to claim 1, 2 or 3.

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