JPH0729425Y2 - Condenser cooling pipe cleaning tool - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention mainly aims to maintain the performance of a condenser that cools steam discharged from a nuclear power plant, a thermal power plant, etc. with water to condense it, and uses a sludge inside the cooling pipe. The present invention relates to a condenser cooling pipe cleaning tool suitable for removing hard scale such as scales and shellfish attached to the inner surface of a cooling pipe while extruding impurities such as sand and sand.

[0002]

2. Description of the Related Art Conventionally, as a cooling pipe cleaning tool of this type,
A brush with hairs sandwiched between two folded metal core rods is provided, and the cap body is formed integrally with the tip of the core rod of this brush. Air or water at high pressure to drive the cleaning tool from one end to the other inside the cooling pipe, and push out impurities such as sludge and sand inside the cooling pipe with the brush while cooling with the same brush. Hard scales such as scales and shellfish that adhered to the inner surface of the were scraped off. (For example, Jitsuko Sho 37-2
4121).

[0003]

However, at the time of cleaning the cooling pipe, the brush of the cleaning tool pushes out impurities such as sludge and sand inside the cooling pipe, and the same brush is used to remove the scales and shellfish attached to the inner surface of the cooling pipe. Since the hard scale was scraped off, not only could the hard scale on the inner surface of the cooling pipe not be removed efficiently and reliably, but since the core rod was made of metal, when running inside the cooling pipe when cleaning the cooling pipe, The core rod might hit the inner surface of the cooling pipe and damage the inner surface of the cooling pipe.

Moreover, since one brush of the cleaning tool pushes out impurities such as sludge and sand inside the cooling pipe and scrapes off hard scale such as water stains and shells on the inside of the cooling pipe, this one brush is used. There was a defect that impurities inside the cooling pipe that were not extruded by the brush and residuals such as hard scale on the inner surface of the cooling pipe that were not scraped off by the brush remained in the cooling pipe.
Further, since it is impossible to color the brush, it is not possible to properly use the brush for the necessary cooling pipes, thus reducing the efficiency of cleaning work.

Therefore, the present invention has been devised to solve the above-mentioned problems, and when cleaning the cooling pipe, the inner surface of the cooling pipe is not damaged, and sludge, sand, etc. inside the cooling pipe are provided. Not only is it possible to efficiently and reliably remove the scales such as scales and shells on the inner surface of the cooling pipe while extruding the impurities, but also to remove impurities such as impurities and hard scales in the cooling pipe that were not extruded or scraped off by the brush. It can be extruded completely, and it can be used properly for the required cooling pipe,
(EN) A cooling pipe cleaning tool for a condenser, which can remarkably improve the efficiency of cleaning work.

[0006]

In order to achieve the above-mentioned object, according to the present invention, the outer diameter of the outer peripheral surface of the cylindrical core having a closed portion at the distal end is cooled. The cleaning tool main body is made of synthetic rubber and has the same outer diameter as the pipe, and several annular blades for extruding impurities such as sludge and sand inside the cooling pipe are projected at appropriate intervals. On the outer peripheral surface of the base end of the core, a compressed non-woven fabric made of a special nylon fiber having an outer diameter slightly larger than the inner diameter of the cooling pipe and having water absorption and for removing hard scale such as scales and shellfish on the inner surface of the cooling pipe. And has a substantially frustoconical skirt portion projecting rearward in a trumpet shape at least at the rear end of the core body of the cleaning tool body, the impurities in the cooling pipe, the hard scale, etc. It is characterized in that a cleaner for extruding the residue is fixed.

The cleaner has a cylindrical fitting portion having an outer diameter slightly larger than the inner diameter of the core body, a support piece projecting outward from the rear end of the fitting portion at a right angle, and an outer portion of the rear end portion. It consists of a generally frustoconical tubular skirt projecting rearward from the rear end of the fitting part so that its diameter is slightly larger than the inner diameter of the core body, and this fitting part is inside the base end part of the core body. It is preferable that the support piece is semi-forcedly inserted from the rear side and the support piece is fixed so as to abut the base end surfaces of the core body and the compressed nonwoven fabric.

[0008]

With the above-mentioned technical means, when cleaning the cooling pipe, the cooling pipe cleaning tool of the present invention is inserted into the cooling pipe from the closed side of the tip of the cleaning tool body, and air or water is blown from behind. By feeding at high pressure and applying pressure, the cleaning tool body made of synthetic rubber expands and each vane on the outer peripheral surface of the tip end side of the core runs from one end to the other end inside the cooling pipe while closely contacting the inner surface of the cooling pipe Then, while pushing out impurities such as sludge and sand inside the cooling tube with each blade on the outer peripheral surface on the tip end side of the core body of the cleaning tool body, the compressed nonwoven fabric on the outer peripheral surface of the base end portion of the core body causes water stains on the inner surface of the cooling pipe. The inside of the cooling pipe was designed to scrape off hard scales such as shellfish and could not be extruded by each blade on the outer peripheral surface of the tip of the cleaning tool body with the cleaner at the base end of the cleaning tool body. Of impurities and the non-woven fabric on the outer peripheral surface of the base of the core It is to extrude the residue of a hard scale or the like of the cooling pipe surface that could not.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a cleaning tool body made of synthetic rubber such as SBR.
Is closed at the tip of a tubular core body 3 having a cavity 2 in the axial center with a collar piece 4 for pushing out impurities B such as sludge and sand inside the cooling tube A, whose outer diameter is substantially the same as the inner diameter of the cooling tube A. For extruding impurities B such as sludge and sand inside the cooling pipe A, the outer diameter of which is substantially the same as the outer diameter of the cooling pipe A, is provided on the outer peripheral surface of the core body 3 where the tip and base ends of the core 3 are slightly removed. A plurality of annular blades 6 are projected at appropriate intervals, and an annular support piece 7 having an outer diameter substantially the same as the inner diameter of the cooling pipe A is projected on the outer peripheral surface of the core body 3 near the base end. Is formed.

On the outer peripheral surface of the base end portion of the core body 3 of the cleaning tool body 1 formed as described above, a special nylon having an outer diameter slightly larger than the inner diameter of the cooling pipe A and having water absorbency. The compressed non-woven fabric 8 for removing hard scale C such as scales and shellfish on the inner surface of the cooling pipe A is made of fiber so that the front end is supported by the support piece 7 and the rear end is flush with the base end of the core body 3. And a cylindrical fitting portion 9 having an outer diameter slightly larger than the inner diameter of the core body 3 at the base end of the core body 3 of the cleaning tool body 1, and the fitting portion 9 A support piece 10 projecting outward from the rear end at a right angle, and a trumpet-like rearward protrusion from the rear end of the fitting portion 9 so that the outer diameter of the rear end is slightly larger than the inner diameter of the core body 3. The skirt portion 11 has a substantially circular truncated cone shape and is provided.
The PS rubber cleaner 12 for extruding residues such as the impurities B and the hard scale C in the cooling pipe A is semi-forcedly inserted from the rear into the base end portion of the core 3 and supports the cleaner 12. The piece 10 is fixed by an adhesive means or the like so as to abut on the base end surfaces of the core body 3 and the compressed nonwoven fabric 8.

Further, it is explained that the compressed nonwoven fabric 8 is formed of a special nylon fiber having a water absorbing property to remove the scales such as scales and shells on the inner surface of the cooling pipe A. Without being limited thereto, the abrasive material 8 may be mixed into the water-absorbing special nylon fiber to remove the hard scale such as iron oxide inside the cooling pipe A if necessary.

[0013]

As described above, according to the cooling pipe cleaning tool of the present invention, the outer diameter of the cylindrical core body 3 having the closed portion 5 at the distal end is substantially the same as the outer diameter of the cooling pipe A. A cleaning tool body 1 made of synthetic rubber, which is the same and in which several annular blades 6 for extruding impurities B such as sludge and sand inside the cooling pipe A are projected at appropriate intervals, is formed. On the outer peripheral surface of the base end of the core body 3, a special nylon fiber having an outer diameter slightly larger than the inner diameter of the cooling pipe A and made of water-absorbing special nylon fiber is used to remove hard scale C such as scales and shellfish on the inner surface of the cooling pipe A. Since the compressed nonwoven fabric 8 for
When cleaning the cooling pipe, as shown in FIG. 2, the cooling pipe cleaning tool of the present invention is inserted into the cooling pipe A from the closed portion 5 side of the cleaning tool body 1 and air or water is fed from behind at a high pressure. By applying pressure, the cleaning tool body 1 made of synthetic rubber expands, and each blade 6 on the outer peripheral surface on the tip end side of the core body 3 adheres to the inner surface of the cooling pipe A while the one end to the other end in the cooling pipe A. In order to move to the outer peripheral surface of the core body 3 of the cleaning tool body 1, the blades 6 on the outer peripheral surface of the core body 3 of the cleaning tool body 1 push out impurities B such as sludge and sand inside the cooling pipe A. Nonwoven fabric 8 for cooling pipe A
Hard scale C such as scales and shells on the inner surface can be scraped off, and since the cleaning tool body 1 is made of synthetic rubber,
Since each blade 6 of the core body 3 has elasticity, the scales and shellfish on the inner surface of the cooling pipe A are extruded while extruding impurities B such as sludge and sand inside the cooling pipe A without damaging the inner surface of the cooling pipe A. The hard scale C such as can be removed efficiently and reliably.

Moreover, at the base end of the core body 3 of the cleaning tool body 1,
A cleaner 12 for extruding residues such as the impurities B and the hard scale C in the cooling pipe A having at least a rearwardly projecting rearward trumpet-shaped skirt 11 having a substantially truncated cone shape.
The cooling pipe A could not be extruded by the cleaner 12 at the proximal end of the core body 3 of the cleaning tool body 1 by the blades 6 on the outer peripheral surface of the core body 3 of the cleaning tool body 1 on the tip end side. Impurities B inside and residues such as the hard scale C on the inner surface of the cooling pipe A that could not be scraped off by the compressed nonwoven fabric 8 on the outer peripheral surface of the base end portion of the core 3 can be completely extruded.

Further, since the compressed non-woven fabric 8 made of special nylon fiber is fitted on the outer peripheral surface of the base end portion of the core body 3 of the cleaning tool main body 1, what is impossible to color with the conventional brush is the compressed non-woven fabric. Since coloring is possible in 8, the cooling pipe cleaning tools of different types can be color-coded to be used for the required cooling pipes A, and the efficiency of cleaning work can be significantly improved.

Further, as the cleaner 12, a cylindrical fitting portion 9 having an outer diameter slightly larger than the inner diameter of the core 3 and the fitting portion 9 are provided.
A support piece 10 projecting outward from the rear end at a right angle, and a trumpet projecting rearward from the rear end of the fitting portion 9 so that the outer diameter of the rear end is slightly larger than the inner diameter of the core body 3. Skirt portion 11 having a substantially frustoconical cylindrical shape, and the fitting portion 9 is semi-forcedly fitted from the rear into the base end portion of the core body 3 and the supporting piece 10 is formed.
The cleaner 12 can be firmly fixed to the base end of the core body 3 of the cleaning tool main body 1 by fixing the cleaner 12 to the base end surfaces of the core body 3 and the compressed nonwoven fabric 8 so as to be in contact therewith.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional side view showing a usage state of FIG. DESCRIPTION OF SYMBOLS 1 Cleaning tool main body 2 Cavity 3 Core body 4 Collar piece 5 Closure part 6 Blade 7 Support piece 8 Compressed non-woven fabric 9 Fitting part 10 Support piece 11 Skirt part 12
Cleaner A Cooling pipe B Impurity C Hard scale

Claims (2)

[Scope of utility model registration request] 1. A cylindrical core body having a closed portion at the tip, on the outer peripheral surface on the tip end side, having several outer diameters substantially the same as the outer diameter of the cooling pipe for extruding impurities such as sludge and sand inside the cooling pipe. Forming a synthetic rubber cleaning tool body with annular blades protruding at appropriate intervals,
On the outer peripheral surface of the base end of the core of the cleaning tool body, a special scale nylon fiber having an outer diameter slightly larger than the inner diameter of the cooling pipe and having water absorption is used, and a hard scale such as scale or shellfish on the inner surface of the cooling pipe. A compressed non-woven fabric for removal is fitted, and at the base end of the core body of the cleaning tool body, at least a rear portion has a skirt portion having a substantially truncated cone cylindrical shape protruding backward in a trumpet shape, the inside of the cooling pipe. A condenser cooling pipe cleaning tool, characterized in that a cleaner for extruding residues such as impurities and hard scale is fixed. 2. The cleaner comprises a cylindrical fitting portion having an outer diameter slightly larger than the inner diameter of the core body, a support piece protruding outward from the rear end of the fitting portion at a right angle, and a rear end outer portion. It consists of a generally frustoconical tubular skirt projecting rearward from the rear end of the fitting part so that its diameter is slightly larger than the inner diameter of the core body, and this fitting part is inside the base end part of the core body. The cooling pipe cleaning tool for a condenser according to claim 1, wherein the cooling pipe is semi-forcedly inserted from the rear to the rear and the supporting piece is fixed so as to abut on the base end faces of the core body and the compressed nonwoven fabric.