JPS61213499A - Furnace wall cleaning method for large sized boiler - Google Patents

Abstract

PURPOSE:To provide an efficient cleaning work, enable unmanned cleaning operation to be performed as well as a remote controlled cleaning operation to be carried out and further to make a safe cleaning operation by a method wherein a long garter is hung between a pair of vertical furnace walls in such a way as it may be moved in a lateral direction and it may be lifted up and down, cleaning devices such as rotary brushes etc. arranged at both ends of the girder are operated to perform a simultaneous cleaning of the opposed furnace wall surfaces. CONSTITUTION:Lifting wires 5 are suspended from the runner parts 4 fixed to the main wires 3 tensioned at the upper portions of the opposed furnace walls 2 of the boiler room 1 to be cleaned, the lower ends of the lifting wires are arranged at the end parts of the girder 6 and attached to an electric winch 7, thereby the girder 6 is moved laterally on the runners 4 along the wires 3 and the girder 6 can be lifted up and down under the operation of the winch 7. The cleaning device 8 is operated such that the rotary brushes 9 arranged at the upper extremity ends of the girder 6 are driven by the electric motor 10. Four wheels 11 are arranged below the rotary brushes 9, each of the wheels is fixed to the extremity end of the rotary arms 12 and energized in such a direction as being pushed against the furnace wall by springs 13. Further, the girder 6 has a structure in which its truss structure is assembled and its assembly and disassembly may easily be performed.

Description

[Detailed description of the invention] (j!! Minute hand for industrial use) The uninvention is the furnace of a large boiler room used for thermal power generation, etc.!
1ffi cleaning method.

[Conventional technology]

Conventionally, large boiler rooms used for thermal power generation have a height of 1
Many of them were over 0 meters long, and workers had to set up scaffolding inside the boiler room and clean the boiler room by hand.

[Problem that the invention seeks to solve]

IW of this conventional boiler furnace! In method 11, scaffolding had to be erected inside the boiler room, which was not only time-consuming, but also dangerous and inefficient.

[Means for solving problems]

The present invention solves the problem of the 8m point and provides a new method for cleaning the furnace 1R of a large dam boiler, which uses scaffolding as a small part, has good work efficiency, can be unmanned, can be remotely controlled, and is safe. The gist of this is that a long garter is suspended from a pair of opposing vertical furnace walls in a large boiler room so that it can be moved horizontally and can be raised and lowered, and wheels attached to each end of the garter are attached to a vertical furnace. With the required urging force, the reaction force is exchanged between the two, and in this state, the M of the garter is
A large boiler characterized by activating the cleaning device such as the 11-turn brush installed in the 4th section to clean the opposing furnace 1tJ at the same time, and by raising and lowering and moving the garter, the entire surface of the direct furnace is layered. There is a method for cleaning the furnace.

[Effect]

In this invention, a long garter is divided into small component parts and compacted inside the boiler room, and the garter is assembled indoors with bolts and nuts, and then spread between the opposing straight furnaces 1 to be cleaned by means such as wires and winches. and suspended so that it can be raised and lowered freely. The wheels attached to both ends of the garter are brought into contact with the stacked furnace wall by a biasing force such as a spring, and the wheels of the opposing furnace dkrfJK are pressed by a predetermined biasing force, which causes mutual reaction force. to hold the garter in a stable horizontal position. If the cleaning device is operated with the foreshadowing of ξ, the cleaning device can perform sufficient cleaning under stable reaction force while maintaining the required biasing force and distance from the furnace wall surface. By moving the garter up and down and moving it sideways, the cleaning surface can be changed in an efficient order, and the furnace wall surface can be cleaned at four rates. An electric winch or the like can be used to raise, lower, and traverse the garter, allowing remote control and unmanned operation, making the work safer.

[Really a hook]

In this embodiment, a main wire (3) is stretched above the opposing furnace # (2) to be cleaned in a boiler room (1), and a lifting wire (5) is connected to a running section (4) attached to the main wire. ), and attach the lower end of the lifting wire to the garter (6
) by winding it around the electric winch (7) provided on the fourth part of the main wire (3), the running part (4) is made to traverse the garter (6) along the main wire (3) K, and by the operation of the electric winch (7), the garter (6) (6) It is possible to raise and lower the shaft. The cleaning device (8) is provided with a rotary brush (9) above the tip 4 of the garter (6), and the rotary suction brush is driven by an electric motor. The wheels (b) are recuperative brushes (four are placed at the bottom of the wheel, and each wheel is an oral arm (6).
The ha arm is attached to the tip of the spring IJI.
K is biased in the direction of pressing toward the furnace 1.

Furthermore, the garter (6) has a truss slope with bolts and nuts, making it easy to assemble and disassemble! It has a structure that can be IKed.

〔Effect of the invention〕

As described above, according to the present invention, the V44 of the garter comes into contact with the furnace surface and the reaction force is mutually absorbed, thereby making it possible to stably and simultaneously clean the furnace 4- in the opposing boiler room. The entire surface of the furnace 1 can be controlled remotely or unmanned by moving the furnace 4 sideways and raising and lowering it.
The effect is that field work can be carried out safely and efficiently.

[Brief explanation of drawings]

No. 1- is an explanatory diagram showing an embodiment of the method for cleaning the furnace 4 of a large boiler according to the present invention, FIG. It is an enlarged side view. (1): Boiler room (2): Furnace 1 (3J two main wires (4): Running section (5): Lifting wire (
6) Nigarter (7): IIIE 1119 inch (6J = Cleaning device (9): Rotating brush 4: Electric motor 42 wheels Side = 1g 1 rotating arm 4 springs Agent Ministry of Toshima Part 4 Part 11 Figure 2

Claims (1)

[Claims] 1) A long garter is hung between a pair of opposing vertical furnace walls in a large boiler room so that it can move horizontally and go up and down, and wheels attached to each end of the garter are attached to the vertical furnace wall with the required biasing force. The vertical furnace A method for cleaning the furnace wall of a large boiler, which is characterized by cleaning the entire wall.