JP4667203B2 - Piping cleaning device - Google Patents

Description

  The present invention relates to a pipe cleaning device that removes deposits adhering to a pipe attached in a vertical direction, such as a protective pipe of a throw-in detector that measures the quality of seawater.

  In a thermal power plant, steam generated by a boiler is used to drive a steam turbine, and power is generated by a generator connected to the steam turbine. The steam exhausted from the steam turbine is cooled and condensed by a condenser, and condensed water is recovered. I have to. Seawater is used for cooling the exhaust steam, and the seawater whose temperature is increased by cooling the exhaust steam is discharged to the outlet. In addition, domestic wastewater and general wastewater treated by wastewater treatment facilities in the power plant are also discharged to the outlet. For this reason, a water quality analyzer for analyzing the quality of seawater is installed at the outlet.

  Conventionally, when analyzing the quality of seawater with a water quality analyzer, a method of pumping up seawater using a sampling pump and detecting the seawater with a detector has been employed. However, with this method, continuous analysis may not be possible due to seawater sampling piping, strainer blockage at the sampling pump inlet, and the like. For this reason, a method of directly throwing the detector itself into seawater and performing water quality analysis is also employed. In the case of the method of throwing the detector itself into seawater, in order to prevent the detector from being damaged by waves, winds, etc., install a pipe on the quay and hang the detector with a wire rope inside the pipe. There are many.

The method of hanging the detector in the protective tube does not obstruct the sampling pipe seen by the method of pumping seawater with the sampling pump, but barnacles, shellfish, etc. adhere to the detector or the protective tube. Cleaning is necessary. Many methods have been proposed in the past for cleaning deposits in piping (see, for example, Patent Document 1). Patent Document 1 discloses a pig method as a method for removing scale attached to the inner surface of a pipe using compressed air, liquid, or the like. In this method, a jig with a cutting blade called a pig is pushed from the end of a pipe with compressed air or liquid, and a rotational force is applied to the jig so that the scale is scraped off by the cutting blade. Further, Patent Document 2 proposes a method in which a peeling jig having a sharp shape for scraping off a fixed object in a pipe is reciprocated by an air cylinder to scrape off the fixed object in the pipe.
JP-A-11-216438 Japanese Utility Model Publication No. 7-14400

  Although the technique described in Patent Document 1 seems to be an effective method for cleaning the inside of a pipe such as a heat exchanger, it is necessary to prepare compressed air or a liquid, and it is always necessary to clean the pipe easily. It is not possible. Moreover, when a part of piping is immersed in seawater like said protection tube, the technique of patent document 1 cannot be employ | adopted. Further, the technique described in Patent Document 2 is not a simple configuration such as using an air cylinder, and the cost of the apparatus is not cheap.

  The objective of this invention is providing the piping cleaning apparatus which removes the deposit | attachment in the piping attached to the perpendicular direction which is easy to use by simple structure.

The present invention is dropped from the upper end of the pipe which is erected in a vertical direction to pass through a lower end of the pipe, scraping the deposits adhered to該配inner wall, for pulling up using with subsequent pulling rope A piping cleaning device,
A cutting portion for scraping the deposit has an inner wall and a small gap of the pipe,
And pulling the guide portion for guiding the cutting portion during pulling provided in the upper part of the cutting unit to the pipe,
Rope engaging portion provided in the upper portion of the pulling guide portion,
It is the piping cleaning device characterized by including.

  The pipe cleaning device according to claim 1, further comprising a cutting blade fixed to a lower portion and / or a side peripheral portion of the cutting portion.

  Further, in the present invention, the pulling guide portion is a solid body, a hollow material, a cone made of a wire mesh, or a member in which a bar is attached in a conical shape. This is a pipe cleaning device.

Moreover, this invention is further equipped with a weight below the said cutting part, It is a piping cleaning apparatus of any one of Claim 1 to 3 characterized by the above-mentioned.
Further, the present invention is the pipe cleaning device according to claim 4, wherein the weight has a shape with a low water resistance.

Further, the present invention is the pipe cleaning device according to any one of claims 1 to 5 , further comprising a water inlet guide portion that reduces the water inlet resistance when water enters.

Moreover, in this invention, the said cutting part is a piping cleaning apparatus of any one of Claim 1 to 6 provided with the through-hole which allows water to pass at the time of water_filling and reduces water resistance.

Piping cleaning system of the present invention, is dropped from the upper end of the pipe which is erected in a vertical direction to pass through a lower end of the pipe, scraping the deposits adhered to the pipe inner wall, using a subsequent pulling rope pull a pipe cleaning apparatus for a top-up use, pulling the guide portion for guiding a cutting unit for scraping deposits has an inner wall and a small gap of the pipe, the cutting portion during pulling provided in the upper part of the cutting unit to the pipe And the rope hooking portion provided on the upper portion of the pulling guide portion, the configuration is simple, and the piping can be easily cleaned using this. In particular, it has a pull-up guide, so when the pipe cleaning device is dropped and the deposits on the inner wall of the pipe are scraped off, the pipe cleaning device pops out from the lower end of the pipe, and the center of the cutting part shifts from the center axis of the pipe. However, the cutting portion can be guided into the pipe, and the pipe cleaning device can be easily pulled up.

  Moreover, according to this invention, since the cutting blade is being fixed to the lower part and / or side peripheral part of the cutting part, the deposit | attachment of a pipe inner wall can be scraped off more reliably.

  Further, according to the present invention, the pulling guide part is a member made of a solid material, a hollow material or a cone made of a hollow material or a metal mesh, or a member in which a bar material is attached in a conical shape. When the deposit on the pipe is scraped off, the pipe cleaning device pops out from the lower end of the pipe, and even if the center of the cutting part is displaced from the center axis of the pipe, the cutting part can be guided into the pipe. The pipe cleaning device can be pulled up. Moreover, if the cone is formed of a solid material, the weight of the pipe cleaning device can be increased, and the deposit removal capability can be increased.

Further, according to the present invention, since the weight is provided below the cutting part, even if the cutting part is formed of a cylindrical material or the pulling guide part is formed of a bar material in a cone shape, It becomes possible to increase the weight. As a result, the kinetic energy when the pipe cleaning device is dropped increases, and the deposit removal capability can be enhanced.
In addition, if the shape of the weight is low, the pipe cleaning device has a high drop speed when it enters the water even if it is used to scrape off deposits adhering to the inner wall of the pipe that is partially immersed in water. There is no reduction, and the deposits can be removed efficiently.

  Further, according to the present invention, even if the pipe cleaning device of the present invention is used to scrape off deposits adhering to the inner wall of a pipe partially immersed in water, the pipe cleaning device of the present invention Since it is provided with a water inlet guide that sometimes reduces the water inlet resistance, the falling speed of the pipe cleaning device is not greatly reduced, and the deposits can be efficiently removed.

  Further, according to the present invention, the cutting part has a through-hole that allows water to pass therethrough and reduces the water resistance when entering water, so that the pipe cleaning device of the present invention is attached to the inner wall of a pipe that is partially immersed in water. Even if it is used to scrape off deposits, the falling speed of the pipe cleaning device is not greatly reduced, and the deposits can be efficiently removed.

  FIG. 1 is a view showing a pipe cleaning device 1 as a first embodiment of the present invention, FIG. 1 (a) is a perspective view, and FIG. 1 (b) is a longitudinal sectional view. FIG. 2 is a diagram illustrating a method of using the pipe cleaning device 1. The pipe cleaning device 1 is a cleaning device that drops the inside of a pipe erected in the vertical direction and scrapes off deposits on the inner wall. The cutting unit 2 scrapes off the deposits, and the pulling provided on the upper part of the cutting unit 2 The guide 3 and the rope hook 4 provided at the upper end of the pulling guide 3 are provided.

The cutting part 2 is for removing the deposit 12 adhering to the inner wall 11 of the pipe 10, and is made of a solid material having a cylindrical shape with an outer diameter slightly smaller than the inner diameter of the pipe 10 to be cleaned. . Since it is the bottom peripheral edge portion 5 that substantially scrapes off the deposit 12 of the cutting portion 2, the height of the cylinder should not be increased more than necessary. If it is too high, the area where the side surface 6 comes into contact with the deposit 12 on the pipe inner wall 11 becomes large. As a result, the resistance when the pipe cleaning device 1 drops in the pipe 10 is increased, the dropping speed is reduced, and the cutting ability is reduced. Therefore, in some cases, it is possible to eliminate the cylindrical portion and to use the lowermost portion 7 of the pulling guide portion 3 as the cutting portion 2.

  On the other hand, when the volume of the cylindrical portion is increased, the weight of the pipe cleaning device 1 is increased, and the kinetic energy when the pipe cleaning device 1 is dropped increases and the cutting ability increases. In particular, when the pulling guide portion 3 is formed of a bar shown in another embodiment, it is effective to increase the height of the cylinder in order to increase the cutting ability. In consideration of these points, the height of the cylindrical portion may be appropriately determined. Although the material is not particularly limited, the weight of the pipe cleaning device 1 can be increased by using a metal material having a large specific gravity. Moreover, when using for the removal of the deposit | attachment of the piping 10 which is partially immersed in seawater, it is desirable that it is a material which has seawater resistance. Naturally, the cutting part 2 needs to have a strength that does not deform even when it collides with the deposit 12.

  The pulling guide unit 3 causes the pipe cleaning device 1 to drop in the pipe 10, the pipe cleaning device 1 pops out from the lower end 13 of the pipe 10, and the cutting part 2 is displaced from the center axis of the pipe 10 when the cutting part 2 is displaced. 2 for guiding the inside of the pipe. The pulling guide portion 3 is made of a solid material having a conical shape. Since the pulling guide part 3 is for guiding the cutting part 2 into the pipe 10, the apex angle α of the conical part is not particularly limited as long as the side face 8 is not caught by the lower end 13 of the pipe. . Further, since the pulling guide portion 3 is connected to the cutting portion 2, it can be integrally formed from a cylindrical material. Although the material of the pulling guide part 3 is not particularly limited, it should be considered that the pulling guide part 3 also greatly affects the weight of the pipe cleaning device 1. By using a metal material having a large specific gravity, the weight of the pipe cleaning device 1 can be increased. Moreover, when using for the removal of the deposit | attachment of the piping 10 which is partially immersed in seawater, it is desirable that it is a material which has seawater resistance. In addition, since the pulling guide part 3 is not limited to a solid material, you may use a hollow material.

  The rope hooking portion 4 is for fixing the rope 15 and is provided at the upper end of the pulling guide portion 3. Since the rope hooking portion 4 is for fixing the rope, it may have a ring shape shown in the present embodiment or a hook shape in which a part of the ring is missing. Further, a through hole may be formed in the upper part of the pulling guide part 3 and this may be used as the rope hooking part 4.

  When removing the deposit 12 adhering to the inner wall 11 of the pipe 10 attached in the vertical direction by using the pipe cleaning apparatus 1 configured as described above, the pipe cleaning apparatus 1 is pulled to the rope hooking portion 4. After fixing the rope 15 for raising, the pipe cleaning device 1 may be dropped from the upper end 14 of the pipe 10. The pipe cleaning device 1 scrapes off the deposit 12 attached to the pipe inner wall 11 at the cutting part 2 while dropping the pipe interior 10. After dropping the pipe cleaning device 1 until it passes through the lower end 13 of the pipe 10, the pipe cleaning device 1 is pulled up using the pulling rope 15. Since the pipe cleaning device 1 of the present invention is provided with the pulling guide portion 3, when the pipe cleaning device 1 is pulled up, it can be pulled up easily even if the cutting portion 2 and the central axis of the pipe 10 are misaligned. it can. Thus, the pipe cleaning device 1 of the present invention has a simple structure and can easily clean the pipe 10 using this.

  FIG. 3 is a longitudinal sectional view of the pipe cleaning device 20 as the second embodiment of the present invention. Parts corresponding to those in FIG. 1A and FIG. 1B are denoted by the same reference numerals, and redundant description is omitted. The pipe cleaning device 20 as the second embodiment is characterized in that it has a cutting blade 21 at the bottom peripheral edge 5 of the cutting part 2 as compared with the pipe cleaning device 1 as the first embodiment. Thereby, the deposit 12 in the pipe 10 can be reliably removed. In addition, although the example which provides the cutting edge 21 in the bottom peripheral part 5 was shown in 2nd embodiment, you may provide a cutting edge in the side surface 6 of the cylindrical-shaped cutting part 2. FIG.

  FIG. 4 is a longitudinal sectional view of the pipe cleaning device 30 as the third embodiment of the present invention. Parts corresponding to those in FIG. 1A, FIG. 1B, and FIG. The piping cleaning device 30 as the third embodiment is characterized in that it has an inverted conical water inlet guide portion 31 at the bottom of the cutting portion 2 as compared with the piping cleaning device 20 as the second embodiment. The diameter d1 of the connecting portion of the water inlet guide portion 31 with the cutting portion 2 is substantially the same as the inner diameter d2 of the cutting blade 21. By providing the water inlet guide 31 in the pipe cleaning device 30, when the deposit 12 in the pipe 10 where a part of the pipe 10 is immersed in seawater is removed by the pipe cleaning device 30, the water inlet resistance of the pipe cleaning device 30 is reduced. The deposit 12 can be efficiently removed. By making the diameter d1 of the connecting portion of the water inlet guide portion 31 with the cutting portion 2 substantially the same as the inner diameter d2 of the cutting blade 21, the water inlet resistance can be further reduced.

  FIG. 5 is a pipe cleaning device 40 which is a modification of the pipe cleaning device 30 as the third embodiment of the present invention. FIG. 5 (a) is a longitudinal sectional view, and FIG. 5 (b) is a plan view. is there. Parts corresponding to those in FIG. 4 are denoted by the same reference numerals, and redundant description is omitted. Compared with the piping cleaning device 30 according to the third embodiment, the piping cleaning device 40 has a large number of through holes 41 in the vicinity of the outer periphery of the bottom of the cutting portion 2 so as to contact the inside of the cutting blade 21. There is a feature. By providing the through-hole 41, when the deposit 12 in the pipe 10 in which a part of the pipe 10 is immersed in seawater is removed by the pipe cleaning device 40, compared to the pipe cleaning device 30 as the third embodiment. The water entry resistance is further reduced, and the deposit 12 can be efficiently removed.

  FIG. 6 shows a pipe cleaning device 50 according to a fourth embodiment of the present invention. FIG. 6 (a) is a longitudinal sectional view, and FIG. 6 (b) is a plan view. Parts corresponding to those in FIGS. 1 to 5 are denoted by the same reference numerals and redundant description is omitted. The pipe cleaning device 50 is similar to the pipe cleaning device 20 as the second embodiment shown in FIG. 3 in that the cutting blade 21 is provided at the bottom of the cutting unit 2, but the shapes and structures of the cutting unit 2 and the pulling guide unit 3 are the same. However, it differs greatly from the pipe cleaning apparatuses 1, 30, and 40 shown in other embodiments including the pipe cleaning apparatus 20 of the second embodiment. Unlike the pipe cleaning apparatus shown in the first, second, third, and third modifications, the cutting unit 2 is formed of a hollow material 51.

  Further, unlike the pipe cleaning devices shown in the first, second, third, and third modified examples, the pulling guide unit 3 also includes four rods 52 (52a, 52b, 52c, 52d) that are cones. It is attached to the shape. Since the piping cleaning device 50 formed in this way has many gaps, it has less resistance when entering water than the piping cleaning devices shown in the first, second, third, and third modifications. Therefore, the deposit 12 in the pipe 10 where a part of the pipe 10 is immersed in seawater can be more efficiently removed. In the present embodiment, the four bar members 52 are attached in the shape of a cone and the pull-up guide portion 3 is formed. However, when the cutting portion 2 protrudes from the lower end 13 of the pipe 10, the cutting portion 2 is smoothly moved. The number is not particularly limited as long as it can be raised. Moreover, you may form the pulling guide part 3 with a wire mesh. Thereby, the piping cleaning apparatus 50 with little resistance at the time of water entering can be manufactured similarly to the pulling guide part 3 formed of the four bar materials 52.

  FIG. 7 is a longitudinal sectional view of a pipe cleaning device 60 which is a modification of the pipe cleaning device 50 as the fourth embodiment of the present invention. Parts corresponding to those in FIG. 6A and FIG. 6B are denoted by the same reference numerals, and redundant description is omitted. When the pipe cleaning device 50 and the pipe cleaning device 60 shown in the fourth embodiment are compared, the pipe cleaning device 60 is characterized in that it has a weight 61 hung from the rope hooking portion 4. Since the pipe cleaning device 50 shown in the fourth embodiment has a large number of gaps, the resistance at the time of entering water is small, but conversely, the weight of the entire pipe cleaning device 50 becomes light, and the kinetic energy when this is dropped is reduced. Get smaller. In contrast, in the pipe cleaning device 60, since the weight 61 is hung by the wire 62, the kinetic energy when the weight 61 is dropped is increased, and the cutting ability is also increased. The shape of the weight 61 is preferably a shape having a low resistance when entering water, such as the egg shape shown in FIG.

It is a figure which shows the piping cleaning apparatus 1 as 1st embodiment of this invention, (a) is a perspective view, (b) is a longitudinal cross-sectional view. It is a figure which shows the usage method of the piping cleaning apparatus 1 of FIG. It is a longitudinal cross-sectional view of the piping cleaning apparatus 20 as 2nd embodiment of this invention. It is a longitudinal cross-sectional view of the piping cleaning apparatus 30 as 3rd embodiment of this invention. It is the modification of the piping cleaning apparatus 40 as 3rd embodiment of this invention, Comprising: Fig.5 (a) is a longitudinal cross-sectional view, FIG.5 (b) is a top view. It is the piping cleaning apparatus 50 as 4th embodiment of this invention, Comprising: Fig.6 (a) is a longitudinal cross-sectional view, FIG.6 (b) is a top view. It is a longitudinal cross-sectional view of the piping cleaning apparatus 60 which is a modification of the piping cleaning apparatus 50 as 4th embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piping cleaning apparatus 2 Cutting part 3 Pulling guide part 4 Rope latching part 10 Piping 11 Piping inner wall 12 Adhering substance 14 Piping upper end 15 Pulling rope 20 Piping cleaning apparatus 21 Cutting blade 30 Piping cleaning apparatus 31 Incoming water guide part 40 Piping cleaning apparatus 41 Through-hole 50 Piping cleaning device 52 Bar material 60 Piping cleaning device 61 Weight

Claims (7)

Is dropped from the upper end of the pipe which is erected in a vertical direction to pass through a lower end of the pipe, scraping the deposits adhered to該配tube wall, then the pipe cleaning apparatus for a pulling-up used with pulling rope Because
A cutting portion for scraping the deposit has an inner wall and a small gap of the pipe,
And pulling the guide portion for guiding the cutting portion during pulling provided in the upper part of the cutting unit to the pipe,
Rope engaging portion provided in the upper portion of the pulling guide portion,
A piping cleaning device comprising:   The pipe cleaning device according to claim 1, wherein a cutting blade is fixed to a lower portion and / or a side peripheral portion of the cutting portion.   3. The pipe cleaning device according to claim 1, wherein the pulling guide portion is a solid body, a hollow body, a cone made of a wire mesh, or a member in which a bar is attached in a cone shape.   The pipe cleaning device according to any one of claims 1 to 3, further comprising a weight below the cutting portion. The pipe cleaning apparatus according to claim 4, wherein the weight has a shape with a low water entry resistance. The pipe cleaning apparatus according to any one of claims 1 to 5 , further comprising a water inlet guide portion that reduces a water inlet resistance when water enters. The pipe cleaning device according to any one of claims 1 to 6 , wherein the cutting portion includes a through hole that allows water to pass therethrough and reduces water entry resistance.

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