JPH10306912A - Soot blower device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a supporting part into a compact structure by a method wherein a pair of tube supports are longitudinally movably provided in front of and behind a traveling carriage, and on a running base, a stopper mechanism part which restricts the movement of the tube supports is provided. SOLUTION: When a traveling carriage 22 retracts, a stopper part 34 of a support plate comes into contact with the stopper block of a stopper mechanism part 35, and a stopper releasing part 42 of the traveling carriage 22 is engaged with the slit part of a stopper releasing arm. When the traveling carriage 22 further retracts, the stopper releasing arm and a stopper arm turn clockwise together with the shaft. Thus, the movement of the support plate is restricted, and tube supports 29, 30 which support a lance tube 21 and a feed tube 27 stop at a specified location.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suit blower device used for removing soot and the like attached to a heat exchange tube in a heat exchanger such as a boiler.

[0002]

2. Description of the Related Art A conventional suit blower device is shown in FIGS.
Shown in In FIG. 7, reference numeral 1 denotes a lance tube which is inserted into the boiler through a through hole 3 provided in an outer wall 2 of the boiler. A traveling carriage 4 is provided. The traveling carriage 4 has a pair of left and right rollers 5, 5 (see FIG. 9) on both sides, and these rollers 5, 5
Are supported between a pair of left and right upper roller guides 7, 7 and lower roller guides 8, 8. The lance tube 1 is rotatably held by the traveling carriage 4 via a bearing (not shown), and a rotation drive mechanism (not shown) for driving the lance tube 1 to rotate is provided in the traveling carriage 4. I have.

In the traveling carriage 4,
A feed tube 9 for supplying a dust removing medium such as steam is provided in the lance tube 1. The front end of the feed tube 9 is removably inserted into the lance tube 1, and the front end of the lance tube 1 has a dust removal medium ejection hole 10 for ejecting a dust removal medium such as steam to the outside.
Is provided. The rear end of the feed tube 9 is slidably inserted through a seal (not shown) provided at the rear end of the traveling carriage 4 so that the head valve 1
1 connected.

When removing soot adhering to a heat exchange tube of a boiler using such a suit blower device,
The traveling carriage 4 is moved forward to insert the lance tube 1 into the boiler. Next, in this state, the lance tube 1 is rotationally driven by a rotation drive mechanism (not shown), and when the dust removing medium is supplied from the feed tube 9 into the lance tube 1, the dust removing medium supplied into the lance tube 1 is ejected. The soot adhering to the heat exchange tube is removed by jetting from the hole 10.

By the way, in such a suit blower device, when the size of the boiler becomes large, the length of the lance tube 1 and the feed tube 9 also becomes long. The deflection of the tube 9 increases. When the deflection of the lance tube 1 and the feed tube 9 increases, an excessive load acts on a bearing portion supporting the rear end portion of the lance tube 1 and a seal portion provided at the rear end portion of the traveling carriage 4. However, there is a fear that the above-described bearing portion and seal portion may be damaged. Therefore, in order to prevent such a problem, conventionally, roller supports 12 (see FIG. 8) are respectively provided before and after the traveling carriage 4, and the lance tube 1 and the feed tube 9 are lowered by the roller supports 12, 12. To prevent damage to bearings and seals.

[0006]

However, in such a conventional suit blower device, in order to prevent interference between the traveling carriage 4 and the roller support 12, the roller support 12 is attached to the shaft 13, Both ends of the shaft 13 need to be rotatably supported on the traveling gantry 6 via bearings 14, and when the traveling carriage 4 pushes down one roller support 12, the other roller support 12 rises. On the axis 13,
Since the members 15 and 15 attached to the 13 must be connected by the link 16, there is a problem that the structure of the support portion that supports the lance tube 1 and the feed tube 9 becomes complicated and large.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to provide a suit blower device in which a support portion for supporting a lance tube and a feed tube can have a simple and compact structure.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a lance tube having a dust removing medium ejection hole at a front end, a traveling carriage for moving the lance tube forward and backward, and a traveling carriage. In a suit blower device including a traveling gantry for supporting the traveling carriage movably in the front-rear direction, a pair of tube supports are provided movably in the front-rear direction before and after the traveling carriage, and the tube is provided on the traveling gantry. A stopper mechanism for restricting the movement of the support is provided.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 are views showing an embodiment of the present invention. FIG. 1 is a plan view of a suit blower device according to the embodiment, FIG. 2 is a cross-sectional view taken along line AA of FIG. 3 is a cross-sectional view along the line BB of FIG. 1, and FIG. 4 is a cross-sectional view along the line CC of FIG. In FIG. 1, 2
Reference numeral 1 denotes a lance tube which is inserted into the boiler through a through hole provided in the outer wall of the boiler.
A traveling carriage 22 for moving the lance tube 21 forward and backward in the front-rear direction is provided at the rear end of the lance tube 1.

The traveling carriage 22 has a pair of left and right rollers 23 on both sides (see FIG. 2).
These rollers 23, 23 are supported between a pair of left and right upper roller guides 25, 25 provided on a traveling gantry 24 and lower roller guides 26, 26. The lance tube 21 is rotatably held by a traveling carriage 22 via a bearing.
Inside, a rotation drive mechanism (not shown) for rotating the lance tube 21 is provided.

Further, a feed tube 27 for supplying a dust removing medium such as steam to the lance tube 21 is provided in the traveling carriage 22. The front end of the feed tube 27 is removably inserted into the lance tube 21, and the front end of the lance tube 21 is provided with a dust removal medium ejection hole 28 for ejecting a dust removal medium such as steam to the outside. ing. On the other hand, the rear end of the feed tube 27 passes through a seal provided at the rear end of the traveling carriage 22 and is connected to a head valve (not shown).

Before and after the traveling carriage 22,
A pair of tube supports 29 and 30 for supporting the lance tube 21 and the feed tube 27 are provided. As shown in FIGS. 3 and 4, these tube supports 29 and 30 include a support roller 31 that supports the lance tube 21 or the feed tube 27 from below, and a support plate 32 that supports the support roller 31.
And a pair of rollers 33, 33 are attached to both left and right sides of the support plate 32. These rollers 33 support the support plate 32 so as to be movable in the front-rear direction, and are supported between the upper roller guide 25 and the lower roller guide 26 of the traveling gantry 24.

A pair of left and right stoppers 34, 34 are provided on the upper and lower portions of the support plate 32 so as to protrude from both left and right sides of the support plate 32. These stopper portions 34 cooperate with a pair of left and right stopper mechanism portions 35 provided on the traveling gantry 24 to support the support plate 3.
The stopper mechanism 35 is disposed before and after the traveling carriage 22.

FIG. 5 is a plan view of a stopper mechanism 35 provided on the traveling gantry 24. Hereinafter, the stopper mechanism 35 will be described with reference to FIG. As shown in FIG.
The stopper mechanism 35 includes a base plate 36 fixed to the traveling gantry 24, and a stopper block 37 is installed on an upper surface of the base plate 36 so as to abut the stopper 34. Also, the base plate 36
A shaft 38 is rotatably provided upright on the upper surface of the stopper block 3.
7, a stopper arm 39 that is fixed between the stopper arm 7 is attached. On the other hand, the stopper release arm 4
0 is attached. This stopper release arm 40
Is for releasing the movement restriction by the stopper arm 39, and the stopper release part 42 provided on the traveling carriage 22 is engaged with the slit part 41 formed at the tip of the arm 40. ing.

When removing soot adhering to the heat exchange tube in the boiler by such a suit blower device,
The traveling carriage 22 is moved forward, and the lance tube 21 is inserted into the boiler.
The soot is removed by ejecting a dust removing medium such as steam from a dust removing medium ejection hole 28 provided at the front end of the traveling carriage 22. When the traveling carriage 22 moves forward, a stopper provided on the traveling carriage 22 The release part 42 engages with the slit part 41 formed on the stopper release arm 40. And, in this state, traveling college 2
When the lever 2 further advances, the stopper release arm 40 and the stopper arm 39 rotate counterclockwise with the shaft 38 as shown in FIG. Thereby, the movement restriction of the support plate 32 is released, and the tube support 29 supporting the lance tube 21 and the feed tube 27,
30 moves forward with the traveling carriage 22. When the lance tube 21 is pulled out of the boiler, the traveling carriage 22 is retracted to a predetermined position.
Is retracted, the stopper 34 provided on the support plate 32 is moved to the stopper block 3 of the stopper mechanism 35.
7 and the stopper release portion 42 provided on the traveling carriage 22
It engages with the slit portion 41 formed at 0. When the traveling carriage 22 further retreats in this state, the stopper release arm 40 and the stopper arm 39 rotate clockwise in FIG. Thereby, the movement of the support plate 32 is restricted, and the lance tube 2 is moved.
The tube supports 29 and 30 supporting the feed tube 1 and the feed tube 27 are stopped at predetermined positions.

As described above, in the embodiment shown in FIGS. 1 to 6, a pair of support plates 32, 32 are provided movably in the front-rear direction before and after the traveling carriage 22,
Since the support rollers 31 for supporting the lance tube 21 and the feed tube 27 are attached to these support plates 32, 32, the support rollers 31, 3, even when the traveling carriage 22 moves in the front-rear direction.
1 does not interfere with the traveling carriage 22. Therefore, the tube supports 29 and 30 that support the lance tube 21 and the feed tube 27 can have a simple and compact structure, and the size of the suit blower device can be reduced.

[0017]

As described above, according to the present invention, a pair of support plates are provided movably in the front-rear direction before and after the traveling carriage, and these support plates support the lance tube and the feed tube. By installing the rollers, even if the traveling carriage moves in the front-back direction, the support rollers do not interfere with the traveling carriage,
The support portion for supporting the lance tube and the feed tube can have a simple and compact structure.

[Brief description of the drawings]

FIG. 1 is a diagram showing a schematic configuration of a suit blower device according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along the line CC of FIG. 1;

5 is a plan view of the stopper mechanism shown in FIG.

FIG. 6 is a diagram for explaining the operation of the stopper mechanism.

FIG. 7 is a diagram showing a schematic configuration of a conventional suit blower device.

FIG. 8 is a view for explaining a structure of a support portion for supporting a lance tube and a feed tube of the suit blower device.

FIG. 9 is a sectional view taken along the line DD in FIG. 8;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Lance tube 22 Traveling carriage 24 Traveling stand 27 Feed tube 28 Dust removal medium ejection hole 29, 30 Tube support 31 Support roller 32 Support plate 33 Roller 34 Stopper part 35 Stopper mechanism part 42 Stopper release part

Claims (1)

[Claims] 1. A lance tube having a dust removing medium ejection hole at a front end thereof, a traveling carriage for moving the lance tube forward and backward, and a traveling platform for supporting the traveling carriage movably in the front and rear direction. In the suit blower device provided, a pair of tube supports is provided movably in the front-rear direction before and after the traveling carriage, and a stopper mechanism for restricting movement of the tube support is provided on the traveling gantry. Suit blower equipment.