JP3061530U - Anode electrode device for cathodic protection of water pipes - Google Patents

Abstract

(57) [Problem] To provide an anode electrode device for water corrosion prevention of a water distribution pipe, which can safely and economically attach an anode electrode for corrosion prevention of the water distribution pipe to the water distribution pipe. SOLUTION: A branch socket pipe is attached to a center part of a hinge type pipe joint used for easily connecting water distribution pipes, and an anode electrode is fixed inside the pipe joint via the branch socket pipe. I do.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is an anode electrode for cathodic protection of water distribution pipes that is used by being attached to water distribution pipes such as water supply pipes and hot water supply pipes, thereby preventing corrosion of metal on the inner surface of the water distribution pipes and realizing sterilization of water distribution pipes. Related to the device.

[0002]

[Prior art]

 Conventionally, a flange type anode electrode device that incorporates an anode electrode into a short tube with a flange attached to the water distribution tube to achieve cathodic protection of the water distribution tube by passing current through the water distribution by attaching it to the water distribution tube. Also, there is an insertion type anode electrode device in which a hole is formed in a pipe wall of a water distribution pipe, and an anode electrode is loaded into the pipe through the hole. These are often installed in water pipes where corrosion has already progressed and rust has already occurred on the inner surface.

In order to use the former flange-type anode electrode device when attaching to such an old water distribution pipe, a predetermined portion of the water distribution pipe is cut off to a certain length, and a flange having an anode electrode incorporated therein is mounted on the predetermined portion. The short pipe with flange (flange type anode electrode device) is inserted, and this short pipe is fixed to the left and right water pipes with a special coupling. Therefore, when this flange type anode electrode device is used, problems such as complicated work and high cost arise.

[0004] Further, when the latter perforated insertion type anode electrode device is used, if the pipe wall of the water distribution pipe at the opening is thinned due to rust or the like, the mounting of the anode electrode becomes defective, and there is a fear of water leakage. In addition, since the inserted anode electrode is cantilevered, when repeatedly subjected to a shocking water flow, there is a fear that the anode electrode is gradually bent or the anode mounting portion of the water distribution pipe is damaged.

[0005]

[Problems to be Solved by the Invention] The problem of the present invention has been made in view of the above-mentioned conventional circumstances, and is a distribution system in which an anode electrode for preventing corrosion of a water distribution pipe can be safely and economically attached to the water distribution pipe. It is an object of the present invention to provide an anode electrode device for water tube electric protection.

[0006]

[Means for Solving the Problems]

 The inventors of the present invention have conducted intensive studies, studies, and studies in order to solve the above-mentioned problems.By utilizing hinged pipe joints that are used to easily connect water distribution pipes, We have realized a safe, easy-to-install and inexpensive anode electrode device for cathodic protection of water distribution pipes.

[0007] The hinge type pipe joint is a device in which a pair of gutter-shaped half-split pipes each having a rubber sleeve fixed to an inner surface are combined by a hinge mechanism. Face-to-face, these ends are covered with the pair of half pipes, and the hinges are closed and fixed, so that the two water pipes can be easily connected. Such a hinged pipe joint is a conventional technique, and can easily and economically connect a water distribution pipe.

[0008] If a branch socket pipe is attached to the central portion of such a hinged pipe joint, and an anode electrode is fixed inside the pipe joint via the branch socket pipe, an anode for corrosion protection is basically obtained. The electrode device is completed.

[0009] That is, the anode electrode device for cathodic protection of a water distribution pipe according to the present invention is an anode electrode device that is attached to the water distribution pipe and applies a current to the water distribution to perform cathodic protection of the water distribution pipe. A pair of gutter-shaped half pipes to which a rubber sleeve is fixed are combined by a hinge mechanism, two water distribution pipes face each other, and these ends are covered with the pair of half pipes. A hinged pipe joint for connecting the two water pipes by closing and fixing the hinge; a branch socket pipe integrally formed at a central portion of the hinged pipe joint; An anode electrode installed inside the hinged pipe joint via a branch socket pipe so as to be located between the two water pipes when the two water pipes are connected. It is characterized by having.

[0010]

[Embodiment of the invention]

 FIG. 1 to FIG. 3 are schematic structural views showing an example of the electrode for water corrosion prevention of a water pipe according to the present invention. 1 is a front view of the apparatus, FIG. 2 is a right side view of the apparatus, and FIG. 3 is a cross-sectional view taken along line III-III of FIG.

As shown in the drawing, the anode electrode device for cathodic protection of a water distribution pipe according to the present invention is attached to two cut and separated water distribution pipes 9 and 10 so that they are connected to each other. This is an anode electrode device that performs electrolytic protection of the water distribution pipes 9 and 10 by applying current to the water supply pipes.

This anode electrode device is composed of a hinged pipe joint 1 and an anode electrode 4 mounted inside the hinged pipe joint 1.

The hinge type pipe joint 1 includes a pair of gutter-shaped half-split pipes 1 a and 1 b each having a rubber sleeve 2 fixed to an inner surface thereof, which are combined by a hinge mechanism 1 c to connect two water distribution pipes 9 and 10. The two water distribution pipes are connected by connecting the two water distribution pipes with their ends facing each other, covering the ends with the pair of half pipes 1a, 1b, and closing and fixing the hinge. It is a place. Fastening fittings 11a and 11b are attached to the half pipes 1a and 1b so as to face each other. A reinforcing plate 5 is lined with one of the fasteners 11b, and a hexagonal bolt 6 is attached through the fastener 11b. The other fastening fitting 11a has a thread bar 7 for screwing the hexagonal bolt 6 therein. Note that a washer 8 is provided on the head of the hexagon bolt 6. Therefore, after covering the water distribution pipes 9 and 10 with the half pipes 1a and 1b, the fastening fittings 11a and 11b are tightened with the bolt 6 and the thread bar 7, whereby the two water distribution pipes 9 and 10 are removed. 10 can be connected in a liquid-tight manner.

At the bottom of the hinged pipe joint 1 where the hinge mechanism 1c is located, a branch socket pipe 12 that protrudes outward and opens is integrally formed. A rubber sleeve 2 is lined with the branch socket tube 12, and an electric wire connector 3 is inserted so as to penetrate the rubber sleeve 2, and an anode electrode 4 made of a metal wire is provided at an inner end thereof. Are linked. The anode electrode 4 is disposed so as to be located between the two water pipes 9 and 10 when the two water pipes 9 and 10 are connected. When the half tubes 1a and 1b are tightened, the tip of the anode electrode extends to a position sandwiched by the rubber sleeve 2 at a position facing the electric wire connector 3.

In using the anode electrode device having the above-described configuration, a positive wire from an unillustrated anticorrosion voltage / current control mechanism is connected to the electric wire connector 3, and a negative wire terminal from the control mechanism is connected to the positive terminal. It is attached to the iron part of the water distribution pipe 9 or 10. Then, in order to make the corrosion prevention action and the sterilization action of the water distribution pipes 9 and 10 in operation, a voltage is applied to the water distribution in the water distribution pipes 9 and 10 via the anticorrosion voltage / current control mechanism.

[0016]

[Effect of the invention]

 As described above, according to the anode apparatus for cathodic protection of a water distribution pipe of the present invention, a hinge type pipe joint with a branch socket pipe for inserting an electrode is used. Performance can be further improved in terms of safety, ease of construction, and economy.

[Brief description of the drawings]

FIG. 1 is a front view of an apparatus for explaining an example of an embodiment of the present invention.

FIG. 2 is a side view of the device.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hinge type pipe joint 1a, 1b Half pipe 1c Hinge mechanism 2 Rubber sleep 3 Electric wire connection tool 4 Anode electrode 5 Reinforcement plate 6 Hexagon bolt 7 Thread bar 8 Washer 9, 10 Water distribution pipe 11a, 11b Fastening fitting 12 Branch socket tube

Claims (1)

[Utility model registration claims] 1. An anode electrode device which is attached to a water distribution pipe and applies an electric current to the water distribution to perform cathodic protection of the water distribution pipe. Combined by the hinge mechanism, two water pipes face each other, and these ends are covered with the pair of half pipes, and the hinge is closed and fixed,
A hinge type pipe joint for connecting the two water pipes, a branch socket pipe integrally formed at a central portion of the hinge type pipe joint, and the hinge type pipe via the branch socket pipe. An anode electrode installed inside the joint so as to be located between the two water pipes when the two water pipes are connected,
An anode electrode device for electrolytic corrosion prevention of a water distribution pipe, comprising: