JP2019085896A - Submerged pump facility - Google Patents

Abstract

To provide a submerged pump capable of suppressing corrosion of a connection pipe part even in the case where the submerged pump is lifted.SOLUTION: A submerged pump facility 100 comprises: a metallic connection pipe part 3 which is installed in water; a sacrificial electrode 5 which is formed from a metal material baser than the connection pipe part 3 and corrodes in accordance with a galvanic anode system; a guide pipe 6 in which an introduction hole 61 for introducing the sacrificial electrode 5 insides is formed in the vicinity of an upper end and which extends in a vertical direction; a support part 34 which is provided at a lower end of the guide pipe 6 and electrically conducted with the sacrificial electrode 5 and the connection pipe part 3 in a state where the sacrificial electrode 5 introduced from the introduction hole 61 is supported; and a submerged pump 1 which is configured to move upwards/downwards along the guide pipe 6 and in which a discharge port 15b is connected to one end opening 3a of the connection pipe part 3 at a downward moving position.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a submersible pump installation comprising a submersible pump which is raised and lowered along a guide pipe.

  DESCRIPTION OF RELATED ART Conventionally, the submersible pump installation provided with the submersible pump moved up and down along a guide support | pillar is known (for example, refer patent document 1).

  The said patent document 1 is a submersible pump installation provided with the metallic connection pipe part installed in water, a pair of guide support | pillar extended in an up-down direction, a submersible pump, and an anticorrosion member.

  The submersible pump is configured to be raised and lowered along the guide support via a guide body engaged with the guide support and to be connected to the connecting pipe in the lowered position. The anticorrosion member is electrically conducted to the connection pipe portion through the copper wire, and is formed of a metal material having a higher ionization tendency than the connection pipe portion. Further, the anticorrosion member is disposed between the pair of guide columns and immediately above the guide body, and is configured to be raised and lowered together with the guide body and the submersible pump along the guide columns.

JP 2000-310194 A

  However, in the submersible pump system of Patent Document 1, since the anticorrosion member is moved up and down together with the guide body and the submersible pump, it is necessary to withdraw the anticorrosion member on land when maintaining the submersible pump. In this case, there is a problem that the connecting pipe is left in the water and the connecting pipe is corroded.

  The present invention has been made to solve the above-described problems, and one object of the present invention is to provide a submersible pump capable of suppressing corrosion of a connecting pipe even when the submersible pump is withdrawn. It is to provide equipment.

  In order to achieve the above object, the submersible pump equipment according to one aspect of the present invention is formed of a metal connection pipe portion installed in water and a metal material thinner than the connection pipe portion, and a galvanic anode system The sacrificial electrode to be corroded by the metal and the introduction hole for introducing the sacrificial electrode inward are provided in the vicinity of the upper end, the guide pipe extending in the vertical direction is provided at the lower end of the guide pipe, and the sacrificial electrode introduced from the introduction hole is supported. In the state, the support portion electrically conducted to the sacrificial electrode and the connection pipe portion and the support pipe are configured to be raised and lowered along the guide pipe, and the discharge port is connected to the one end opening portion of the connection pipe portion at the lowered position. And a submersible pump.

  In the submersible pump equipment according to one aspect of the present invention, as described above, the support portion electrically conducted to the sacrificial electrode and the connection pipe portion while supporting the sacrificial electrode introduced into the guide pipe from the introduction hole. Provide As a result, the sacrificial electrode is installed in the guide pipe in a state of being supported by the support portion, so the sacrificial electrode is not moved up and down together with the submersible pump, and even when the submersible pump is withdrawn, Electrical conduction between the sacrificial electrode and the connection tube can be maintained. As a result, even when the submersible pump is withdrawn, corrosion of the connection pipe portion can be suppressed. Further, by introducing the sacrificial electrode into the guide pipe from the introduction hole provided in the vicinity of the upper end, the sacrificial electrode is brought into contact with the support portion provided at the lower end of the guide pipe by its own weight. The electrodes and the connection tube can be electrically conducted. That is, the sacrificial electrode can be easily installed at a position electrically connected to the connection pipe portion. Also, as compared with the case where the sacrificial electrode is disposed outside the guide pipe and lifted up and down, the foreign material contained in water is deposited on the sacrificial electrode by arranging the sacrificial electrode in the guide pipe, and the submersible pump Foreign matters contained in water can be prevented from being entangled in the sacrificial electrode at the time of lifting and lowering.

  In the submerged pump installation according to the aforementioned aspect, preferably, the support is a part of the connecting pipe. According to this structure, the number of parts can be reduced as compared with the case where the support portion and the connection pipe portion are separate members. As a result, the device configuration can be simplified.

  In the submersible pump equipment according to the aforementioned aspect, preferably, the support portion is constituted by a guide pipe attachment portion disposed in the vicinity of the installation surface of the connection pipe portion. According to this structure, the structure of the connection pipe portion can be simplified as compared with the structure in which the support portion and the guide pipe mounting portion are provided separately. In addition, since the guide pipe attachment portion is disposed in the vicinity of the installation surface of the connection pipe portion, the sacrificial electrode can be supported at a low position. Therefore, even when the water level at the installation position of the submersible pump equipment is low, the sacrificial electrode and the water can be brought into contact with each other, so that the sacrificial electrode can suppress the corrosion of the connection pipe portion.

  In this case, preferably, the guide pipe mounting portion is formed of a convex portion that protrudes upward and is fitted to the guide pipe. According to this structure, the guide pipe mounting portion can be configured to have a simple shape, and the guide pipe mounting portion can prevent positional deviation of the lower end portion of the guide pipe.

  In the submersible pump equipment according to the above aspect, preferably, the sacrificial electrode is placed on the conductive plate-like member connected to and suspended from one end of the wire member, from the introduction hole into the guide pipe. It is introduce | transduced and it is comprised so that it may install on a support part via a plate-shaped member. According to this structure, since the sacrificial electrode can be moved up and down together with the plate-like member via the wire member, the posture of the sacrificial electrode can be stabilized when the sacrificial electrode is introduced into the guide pipe, and The remaining amount of the sacrificial electrode can be easily confirmed by using a member to withdraw. In addition, the remaining amount of the sacrificial electrode can be accurately grasped.

  In this case, preferably, the sacrificial electrode is supported by the plate-like member in a state in which the plate-like member is suspended by the wire member and floated from the support portion, and the support portion in a state in which the plate-like member is installed on the support portion. Configured to be supported by the According to this structure, the sacrificial electrode, the plate-like member and the support portion can be brought into contact with each other by the weight of the sacrificial electrode and the plate-like member, so that the posture of the sacrificial electrode is kept horizontal on the plate-like member and stable. As a result, the conductive member can be installed on the support portion, and electrical conduction between the sacrificial electrode and the support portion can be easily ensured through the plate-like member.

  In the configuration in which the sacrificial electrode is placed on the support via the plate-like member in a state where the sacrificial electrode is placed on the conductive plate-like member, preferably, the sacrificial electrode is a hole or a hole through which the wire member is inserted. It includes an opening formed by a notch. According to this structure, since the sacrificial electrode can be inserted into the wire member, a plurality of sacrificial electrodes can be stacked in a line in the vertical direction along the wire member, and the sacrificial electrode in the horizontal direction Movement can be regulated. As a result, when the sacrificial electrode moves up and down in the guide pipe, it is possible to suppress the sacrificial electrode from falling off from the plate-like member and the state in which the sacrificial electrode is biased in the horizontal direction.

  In the submersible pump equipment according to the aforementioned aspect, preferably, the support portion is a part of the connection pipe portion, and is configured to be electrically conducted to the sacrificial electrode by directly abutting on the sacrificial electrode. . According to this structure, the sacrificial electrode can be brought into direct contact with the supporting portion from above by its own weight, so that electrical conduction between the sacrificial electrode and the supporting portion which is a part of the connecting tube can be facilitated. And, it can be secured surely.

  In the submersible pump equipment according to the aforementioned aspect, preferably, the connection pipe portion includes a pipe portion having a water flow path, and a leg portion provided with a support portion and supporting the pipe portion from below. According to this structure, since the support portion is disposed at a relatively low position, the sacrificial electrode can be supported at a relatively low position. Therefore, even if the water level is relatively low, the sacrificial electrode can be conducted, so that corrosion of the connection pipe can be suppressed.

  In the submersible pump equipment according to the above aspect, it is preferable to confirm presence or absence of the sacrificial electrode in the guide pipe at a predetermined height position below the introduction hole and above the support portion in the guide pipe. A verification hole is provided to According to this structure, the remaining amount of the sacrificial electrode can be easily confirmed by the confirmation hole.

  In the submersible pump equipment according to the above-mentioned one aspect, preferably, a water conduction hole for guiding water in the guide pipe is provided in the vicinity of the lower end of the guide pipe. According to this structure, the sacrificial electrode and the water can be reliably brought into contact by conducting water from the water injection hole into the guide pipe.

  In the submersible pump equipment according to the above-mentioned one aspect, preferably, a gap for conducting water in the guide pipe is provided between the guide pipe and the support portion. According to this structure, the sacrificial electrode and the water can be reliably brought into contact by conducting water from the gap.

  According to the present invention, as described above, corrosion of the connection pipe can be suppressed even when the submersible pump is withdrawn.

BRIEF DESCRIPTION OF THE DRAWINGS It is the side view which showed the whole structure of the submersible pump installation by 1st Embodiment of this invention. FIG. 5 is a cross-sectional view taken along line 500-500 of FIG. FIG. 5 is an enlarged cross-sectional view showing a support, a guide pipe and a sacrificial electrode of the submersible pump equipment according to the first embodiment of the present invention. It is the expanded sectional view which showed the support part of the submersible pump installation by the 2nd embodiment of the present invention, a guide pipe, a sacrificial electrode, and a lift. It is the perspective view which showed the sacrificial electrode and raising / lowering tool of the submersible pump installation by 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described based on the drawings.

First Embodiment
(Configuration of submersible pump equipment)
A first embodiment of the present invention will be described with reference to FIGS. 1 to 3. The submersible pump facility 100 according to the first embodiment is, as shown in FIG. 1, installed on the bottom surface (installation surface H1) of a drainage area H such as a plant, and water stored in the drainage area H (especially corrosive seawater) ) And is discharged from the drainage area H.

  The submersible pump equipment 100 includes a submersible pump 1, a guide hook 2, a connection pipe portion 3, a drainage pipe 4, a sacrificial electrode 5, and a pair of guide pipes 6 (see FIG. 2). The pair of guide pipes 6 is formed in a cylindrical shape having a cylindrical outer surface extending linearly in the vertical direction (Z direction) and a circular through hole 6a (see FIG. 2).

  The connection pipe 3 and the drain pipe 4 are fixedly connected to each other by bolts (not shown). The connection pipe portion 3 is installed on the bottom surface (installation surface H1) of the drainage area H (under water). That is, the connection pipe 3 and the drainage pipe 4 do not move. The submersible pump 1 and the guide hook 2 are fixedly connected to each other by bolts (not shown), and are configured to be raised and lowered in the vertical direction (Z direction) along the guide pipe 6. The submersible pump equipment 100 is configured to send the water in the drainage area H in the order of the submersible pump 1, the guide hook 2, the connection pipe 3 and the drainage pipe 4.

  As shown in FIG. 2, in plan view (as viewed in the Z direction), the submersible pump 1, the guide hook 2 and the connection pipe portion 3 are aligned in a straight line. Therefore, in the horizontal direction, the direction in which the submersible pump 1, the guide hook 2 and the connection pipe portion 3 are aligned is the X direction, the direction from the connection pipe portion 3 toward the submersible pump 1 is the X1 direction, and the opposite direction is the X2 direction. Do. Further, a direction orthogonal to the X direction and the vertical direction (Z direction) is taken as a Y direction.

  Here, the submersible pump equipment 100 according to the first embodiment is configured to suppress corrosion of the connection pipe portion 3 by the sacrificial electrode 5 introduced (charged) into the guide pipe 6. The sacrificial electrode 5 is formed of a metal material that is thinner than the connection pipe portion 3 and is configured to corrode by a galvanic anode method. The detail of the structure which suppresses corrosion of the connection pipe part 3 is mentioned later.

<Configuration of Submersible Pump>
As shown in FIG. 1, the submersible pump 1 is a vertical submersible electric pump. The submersible pump 1 includes a metal casing 11, a sacrificial electrode 12, a hook portion 13, a pump chamber 14 and an impeller 16.

  The sacrificial electrode 12 is provided in the metal casing 11 of the submersible pump 1 in electrical conduction with the casing 11. The sacrificial electrode 12 is formed of the same material as the sacrificial electrode 5. In addition, the sacrificial electrode 12 is formed of a metal material that is smaller than the casing 11. Specifically, the sacrificial electrode 12 is formed of a material containing zinc. The hook portion 13 is provided on the upper portion of the submersible pump 1. A hanging wire R for suspending the submersible pump 1 is attached to the hook portion 13. The submersible pump 1 is configured to be moved up and down in the vertical direction (Z direction) along the guide pipe 6 by the suspension wire R. The submersible pump 1 is withdrawn from the drainage area H to the ground along with the sacrificial electrode 12 and maintenance is performed. Under the present circumstances, the submersible pump installation 100 can not suppress corrosion of the connection pipe part 3 by the sacrificial electrode 12.

  The submersible pump 1 is configured such that the downward movement (in the Z2 direction) is restricted by the guide hook 2 coming into contact with the connection pipe portion 3. The submersible pump equipment 100 is arranged at the lowering position where the submersible pump 1 is restricted from moving downward, so that the submersible pump 1, the guide hook 2, the connecting pipe 3 and the drainage pipe 4 It is configured to form one flow path communicating with each other for draining the water. Note that FIG. 1 shows the submersible pump 1 in the lowered position.

  An impeller 16 is disposed in the pump chamber 14. The pump chamber 14 has a suction port 15 a disposed immediately below the impeller 16 and a discharge port 15 b disposed on the side (X2 direction side) of the impeller 16. The impeller 16 is configured to be rotationally driven by a motor 16 b attached to the rotation shaft 16 a. The impeller 16 is configured to supply the water in the drainage area H from the suction port 15a into the pump chamber 14 by being rotationally driven. Further, the impeller 16 is configured to impart velocity energy to the water absorbed into the pump chamber 14 by being rotationally driven. As a result, in the pump chamber 14, the velocity energy of water is converted into pressure energy, and the water is discharged from the discharge port 15b. The discharge port 15 b is connected to the one end opening 3 a of the connection pipe portion 3 via the guide hook 2 at the lowered position.

<Structure of Guide Hook>
The guide hook 2 shown in FIG. 1 is made of metal. The guide hooks 2 are fixedly attached to the submersible pump 1 by bolts (not shown). The guide hook 2 is disposed between the pipe portion 21 having a water flow path, the hook portion 22 engaged with the guide pipe 6, and the pipe portion 21 and the hook portion 22. And an upwardly recessed engagement recess 23 which engages the projection 32. The hook portion 22 and the engagement recess portion 23 are formed to extend from the upper end of the pipe portion 21 to the opposite side (X2 direction side) with the submersible pump 1 and are disposed immediately above the connecting pipe portion 3 (Z1 direction) There is.

  The pipe portion 21 is disposed between the submersible pump 1 and the connection pipe portion 3. The pipe portion 21 is configured such that water flows in from the discharge port 15 b of the submersible pump 1, and is configured such that the water flows out to the one end opening portion 3 a of the connection pipe portion 3.

  As shown in FIG. 2, the hook portion 22 (a portion surrounded by an alternate long and short dash line in FIG. 2 of the guide hook 2) is disposed between the pair of guide pipes 6 and viewed in plan (as viewed from the Z direction) At both ends in the Y direction, a pair of arc-shaped portions formed along the outer peripheral surface of the pair of cylindrical guide pipes 6 are provided. By engaging the hook portion 22 with the pair of guide pipes 6 extending in the vertical direction (Z direction), movement in the horizontal direction (X direction, Y direction) is restricted and movement in the vertical direction is permitted. It is configured. Therefore, the submersible pump 1 is configured to be restricted in horizontal movement by the hook portion 22 of the guide hook 2 and to be permitted to move up and down.

  As shown in FIG. 1, in the lowered position, the engagement recess 23 engages with the engagement protrusion 32 of the connection pipe 3 from the upper side, thereby bringing the guide hook 2 to the predetermined position with respect to the connection pipe 3. It is configured to be deployed. That is, the engagement recess 23 and the engagement protrusion 32 are configured to position the guide hook 2 with respect to the connection pipe portion 3.

  When the guide hook 2 is positioned with respect to the connection pipe portion 3, the end surface 24 on the connection pipe portion 3 side of the guide hook 2 is the end surface on the guide hook 2 side (one end opening 3 a side) of the connection pipe portion 3 It is comprised so that 35 may be contact | abutted. The end face 24 and the end face 35 are both mirror-finished.

<Configuration of connection tube portion>
As shown in FIG. 1, the connection pipe portion 3 has a function of changing the direction of the flow of water. In detail, the connection pipe portion 3 is configured to change the direction of the flow of water laterally (in the X2 direction) sent by the impeller 16 of the submersible pump 1 upward. In short, the connection pipe portion 3 is an L-shaped pipe joint (bend).

  The connection pipe portion 3 integrally includes a pipe portion 31 having a water flow path, an engagement convex portion 32 provided on the pipe portion 31, a leg portion 33, and a support portion 34 provided on the leg portion 33. It is. The connection pipe portion 3 (the pipe portion 31, the engagement convex portion 32, the leg portion 33, the support portion 34) is made of metal. Specifically, the connection pipe portion 3 is formed of gray cast iron. The support portion 34 is an example of the “guide pipe attachment portion” and the “convex portion” in the claims.

  The pipe portion 31 has one end opening 3 a connected to the guide hook 2 and the other end opening 3 b connected to the drainage pipe 4. The engagement convex portion 32 is formed to project upward from the upper portion of the pipe portion 31. The engagement convex portion 32 is disposed directly below the engagement concave portion 23 of the guide hook 2.

  The legs 33 are configured to support the tube 31 from below. The leg portion 33 is disposed on the installation surface H1 and has a plate-like flat portion 33a extending in the horizontal direction. The leg portion 33 is installed (fixed) on the installation surface H1 by the anchor bolt B and the nut attached to the flat plate portion 33a.

  The support 34 is a part of the connection pipe 3. The support portion 34 is provided on the upper surface of the flat plate portion 33 a and directly below (lower end) of the pair of guide pipes 6. The support portion 34 is disposed in the vicinity of the installation surface H1. The support portion 34 has a convex shape projecting upward, and is configured to be fitted to the guide pipe 6 from the lower end of the through hole 6 a of the guide pipe 6. That is, at least the upper end portion of the support portion 34 is disposed inside the through hole 6a.

  The support portion 34 supports the sacrificial electrode 5 and the connection pipe portion 3 in a state of supporting the sacrificial electrode 5 introduced (charged) into the guide pipe 6 from the introduction hole 61 described later provided in the vicinity of the upper end of the guide pipe 6. And are electrically connected.

  In detail, when the sacrificial electrode 5 is introduced (charged) into the guide pipe 6 from the introduction hole 61, the sacrificial electrode 5 falls downward by its own weight. Then, the lower end of the sacrificial electrode 5 abuts on the support portion 34 and stops. When a plurality of sacrificial electrodes 5 are introduced into the guide pipe 6 as shown in FIG. 1, the plurality of sacrificial electrodes 5 are supported so as to be stacked on the support portion 34. The support portion 34 which is a part of the connection tube portion 3 is configured to be electrically conducted to the sacrificial electrode 5 by directly contacting the sacrificial electrode 5 from below.

<Structure of drainage pipe>
As shown in FIG. 1, the drainage pipe 4 extends in the vertical direction, and is provided to straddle the drainage area H and the area outside the drainage area H. One end (lower end) in the drainage area H of the drainage pipe 4 is connected to the other end opening 3 b of the connection pipe 3.

<Composition of sacrificial electrode>
As shown in FIG. 1, the sacrificial electrode 5 has a cylindrical shape extending in the vertical direction. That is, the sacrificial electrode 5 is a round bar-shaped member. The outer diameter of the sacrificial electrode 5 is smaller than the inner diameter of the guide pipe 6. When the sacrificial electrode 5 falls in the guide pipe 6, a gap that does not prevent the drop due to friction is the inner wall (inner circumferential surface) (through hole 6 a) of the guide pipe 6 and the outer circumferential surface of the sacrificial electrode 5. Are formed in a predetermined size to be secured.

  A plurality of sacrificial electrodes 5 are introduced into the guide pipe 6 in principle in use. When a plurality of sacrificial electrodes 5 are introduced into the guide pipe 6, the sacrificial electrodes 5 are formed to be stacked one by one in the vertical direction. A plurality of sacrificial electrodes 5 are preferably introduced into the guide pipe 6 and stacked to a predetermined height position above the liquid level.

  As described above, the sacrificial electrode 5 is formed of a metallic material (a metallic material having a high ionization tendency) that is less noble than the connection tube portion 3. That is, the sacrificial electrode 5 is formed of a material having a property of being more easily corroded than gray cast iron (connection pipe 3) when disposed in water. As one specific example, the sacrificial electrode 5 is formed of a material containing zinc.

  In addition, the sacrificial electrode 5 is disposed in water and electrically conducted to the connection pipe portion 3, and is formed of a metal material which is inferior to other configurations of the conductive submersible pump equipment 100. For example, in the case where the connection pipe portion 3, the drain pipe 4, and the guide pipe 6 are formed of a metal material or a material having conductivity, the sacrificial electrode 5 is formed of the connection pipe portion 3, the drain pipe 4, and the guide pipe. It is formed of a metal material that is less noble than six. In addition, the sacrificial electrode 5 is formed of a metal material that is thinner than the metal guide hook 2 and the metal casing 11.

<Structure of guide pipe>
As shown in FIG. 1, the lower end of the guide pipe 6 is disposed in the water, and the upper end is disposed above the water surface (liquid surface). The upper end of the guide pipe 6 is fixed to the side wall W at a position above the drainage area H via the fixing member K.

  The guide pipe 6 is made of metal and has a cylindrical shape extending linearly in the vertical direction. For example, the guide pipe 6 is formed of a galvanized steel pipe or a stainless steel material.

  The guide pipe 6 is configured to guide raising and lowering of the submersible pump 1 in the vertical direction (Z direction). The guide pipe 6 guides raising and lowering of the submersible pump 1 between the lowered position and the raised position where the submersible pump 1 is removed from the guide pipe 6 for maintenance. The guide pipe 6 has a function of connecting the submersible pump 1 to the connection pipe portion 3 in the lowered position. Further, the guide pipe 6 introduces the sacrificial electrode 5 for suppressing the corrosion of the connection pipe portion 3 inside, and the sacrificial electrode 5 is formed on the support portion 34 of the connection pipe portion 3 and the inner wall (through hole 6a) of the guide pipe 6 It has a function to hold the sacrificial electrode 5 inside so as to be supported (abutted). Below, the structure for exhibiting the latter function is demonstrated. The guide pipe 6 is configured to guide the vertical movement of the submersible pump 1 on the outer peripheral surface, and configured to guide the sacrificial electrode 5 on the inner wall (through hole 6a).

  The guide pipe 6 is provided with an introduction hole 61, a confirmation hole 62, and a water conveyance hole 63 in this order from the top. The introduction hole 61, the confirmation hole 62, and the water conduction hole 63 are all horizontal holes provided in the guide pipe 6, and are in communication with the through holes 6a of the guide pipe 6 extending in the vertical direction from the lateral direction.

  The introduction hole 61 is provided in the vicinity of the upper end of the guide pipe 6. The introduction hole 61 is a hole for introducing the sacrificial electrode 5 into the inside of the guide pipe 6. Therefore, the introduction hole 61 is at least formed larger than the outer diameter of the sacrificial electrode 5.

  The confirmation hole 62 is provided on the lower side than the introduction hole 61 and at a predetermined height position on the upper side of the support portion 34. Further, the confirmation hole 62 is provided on the upper side of the water passage hole 63. The confirmation hole 62 is a hole for confirming the presence or absence of the sacrificial electrode 5 in the guide pipe 6. A position where the manager of the submersible pump equipment 100 can visually recognize from the height of the confirmation hole 62 by visually recognizing the inside of the guide pipe 6 through the confirmation hole 62 when the confirmation hole 62 is on the liquid surface Whether or not the sacrificial electrode 5 is present can be confirmed. In short, the confirmation hole 62 is a hole for confirming the remaining amount of the sacrificial electrode 5. Therefore, the confirmation hole 62 is formed smaller than the outer shape of the sacrificial electrode 5 so that the sacrificial electrode 5 does not go out of the guide pipe 6.

  A plurality of water injection holes 63 are provided near the lower end of the guide pipe 6. The plurality of water injection holes 63 are arranged in a line in the vertical direction at predetermined intervals. The water introduction hole 63 is configured to introduce the water in the drainage area H into the guide pipe 6. That is, the water feeding hole 63 is a hole for bringing the sacrificial electrode 5 held in the guide pipe 6 into contact with water.

  As shown in FIG. 3, a gap portion S is provided between the guide pipe 6 and the support portion 34. The clearance S is a configuration for guiding water into the guide pipe 6 in the same manner as the water conveyance hole 63. As a specific example, in the submersible pump equipment 100, a notch (not shown) is provided at the lower end of the guide pipe 6, and a gap portion S is formed between the guide pipe 6 and the support portion 34 by this notch. Is formed. Or, in principle, the support portion 34 formed in a truncated cone shape is formed in a polygonal shape in a plan view (not shown), and when it is fitted to the cylindrical guide pipe 6, the guide pipe 6 and the support portion 34 The gap S may be formed between the two. In the vicinity of the lower end of the guide pipe 6, it is configured to abut on the leg 33 at a portion where the clearance S is not provided, whereby the guide pipe 6 and the sacrificial electrode 5 are electrically connected via the leg 33. It is configured to be conductive. In addition, in the submersible pump equipment 100, a groove (not shown) is formed in the support portion 34, and when the support portion 34 is fitted to the guide pipe 6, the gap portion between the groove and the guide pipe 6 S may be configured to be formed. In addition, if the submersible pump equipment 100 has the water conveyance hole 63, the lower end of the guide pipe 6 may be closed by the support portion 34 (the gap portion S may not exist).

  The lower end portion of the guide pipe 6 is in contact with the connection pipe portion 3 (support portion 34), and is electrically conducted to the connection pipe portion 3. Therefore, when the sacrificial electrode 5 is in contact with the inner wall (through hole 6 a) of the guide pipe 6, the sacrificial electrode 5 can be electrically conducted to the connection pipe portion 3 also via the guide pipe 6.

  Although not shown, the submersible pump equipment 100 is configured such that, when the submersible pump 1 is raised, the sacrificial electrode 5 introduced to the guide pipe 6 and supported by the support portion 34 is left in the water. That is, when the submersible pump 1 is raised, the submersible pump equipment 100 is configured to be disposed in water in a state where the sacrificial electrode 5 and the connection pipe portion 3 are electrically conducted.

(Effect of the first embodiment)
In the first embodiment, the following effects can be obtained.

  In the first embodiment, as described above, the support portion 34 electrically conducted to the sacrificial electrode 5 and the connection pipe portion 3 in a state of supporting the sacrificial electrode 5 introduced into the guide pipe 6 from the introduction hole 61. Provide Thus, the sacrificial electrode 5 is installed in the guide pipe 6 in a state of being supported by the support portion 34. Therefore, the sacrificial electrode 5 is not moved up and down together with the submersible pump 1, and the submersible pump 1 is withdrawn. Also, electrical conduction between the sacrificial electrode 5 and the connection tube portion 3 in water can be maintained. As a result, even when the submersible pump 1 is withdrawn, corrosion of the connection pipe portion 3 can be suppressed. Further, the sacrificial electrode 5 is introduced into the guide pipe 6 from the introduction hole 61 provided in the vicinity of the upper end, so that the sacrificial electrode 5 and the support portion 34 provided on the leg portion 33 are in contact by their own weight. As a result, the sacrificial electrode 5 and the connection tube portion 3 can be electrically conducted. That is, the sacrificial electrode 5 can be easily installed at a position electrically connected to the connection pipe portion 3. Further, as compared with the case where the sacrificial electrode 5 is disposed outside the guide pipe 6 and moved up and down, foreign matter contained in water is deposited on the sacrificial electrode 5 by arranging the sacrificial electrode 5 in the guide pipe 6. It is possible to prevent foreign matter contained in water from being entangled in the sacrificial electrode 5 when the submersible pump 1 is moved up and down.

  In the first embodiment, as described above, the support portion is configured as part of the connection pipe portion 3. Thereby, the number of parts can be reduced as compared with the case where the support portion and the connection pipe portion 3 are separate members. As a result, the device configuration can be simplified.

  In the first embodiment, as described above, the support portion 34 is configured to function as a guide pipe attachment portion disposed in the vicinity of the installation surface H1 of the connection pipe portion 3. Thereby, the structure of the connection pipe portion 3 can be simplified as compared with the structure in which the support portion 34 and the guide pipe attachment portion are provided separately. Moreover, since the support part 34 is arrange | positioned in the vicinity of the installation surface H1 of the connection pipe part 3, the sacrificial electrode 5 can be supported in a low position. Therefore, even when the water level at the installation position of the submersible pump equipment 100 is low, the sacrificial electrode 5 and the water can be brought into contact with each other, so that the sacrificial electrode 5 can suppress the corrosion of the connection pipe portion 3.

  Further, in the first embodiment, as described above, the support portion 34 is formed by the convex portion that protrudes upward and is fitted to the guide pipe 6. Thus, the support portion 34 can be configured to have a simple shape, and the support portion 34 can prevent positional deviation of the lower end portion of the guide pipe 6.

  In the first embodiment, as described above, the support portion 34 is a part of the connection pipe portion 3 and is electrically conducted to the sacrificial electrode 5 by directly contacting the sacrificial electrode 5. Configure. Thus, the sacrificial electrode 5 can be made to directly contact the support portion 34 from above by its own weight, so that electrical conduction between the sacrificial electrode 5 and the support portion 34 which is a part of the connection tube portion 3 is facilitated. And, it can be secured securely.

  Further, in the first embodiment, as described above, the pipe portion 31 having a water flow path and the support portion 34 are formed in the connection pipe portion 3, and the leg portion 33 supporting the pipe portion 31 from below is provided. Set up. Thereby, since the support portion 34 is disposed at a relatively low position, the sacrificial electrode 5 can be supported at a relatively low position. Therefore, even if the water level is relatively low, since the sacrificial electrode 5 can be conducted, corrosion of the connection pipe portion 3 can be suppressed.

  Further, in the first embodiment, as described above, the sacrificial electrode 5 in the guide pipe 6 is positioned below the guide hole 61 and at a predetermined height above the support portion 34 in the guide pipe 6. A confirmation hole 62 is provided to confirm the presence or absence of Thereby, the remaining amount of the sacrificial electrode 5 can be easily confirmed by the confirmation hole 62.

  Further, in the first embodiment, as described above, the water conduction hole 63 for guiding water in the guide pipe 6 is provided in the vicinity of the lower end of the guide pipe 6. Thus, the water can be reliably brought into contact with the sacrificial electrode 5 by water conduction from the water injection hole 63 into the guide pipe 6.

  Further, in the first embodiment, as described above, the gap S for conducting water in the guide pipe 6 is provided between the guide pipe 6 and the support portion 34. As a result, water can be reliably brought into contact with the sacrificial electrode 5 by conducting water from the gap S.

Second Embodiment
A submersible pump installation 200 according to a second embodiment will be described with reference to FIGS. 4 and 5. In the second embodiment, unlike the first embodiment in which the sacrificial electrode 5 is introduced into the guide pipe 6 by dropping (throwing in) the introducing electrode 61, the elevator electrode 7 is moved from the introducing hole 261. An example will be described in which it is introduced into the guide pipe 206 by lowering it. In addition, since the submersible pump 1 of the submersible pump installation 200 of 2nd Embodiment, the guide hook 2, and the drain pipe 4 are the structures similar to the said 1st Embodiment, illustration and description are abbreviate | omitted. Moreover, in the figure, the same code | symbol is attached | subjected to the part of the structure similar to the said 1st Embodiment.

  As shown in FIG. 4, the submersible pump equipment 200 according to the second embodiment includes a sacrificial electrode 205, a guide pipe 206, and a lifting tool 7 including a wire member 71 and a plate member 72.

  The sacrificial electrode 205 includes an opening 205 a formed by a hole through which the wire member 71 is inserted. The opening 205 a is a hole penetrating the sacrificial electrode 205 in the vertical direction. That is, the sacrificial electrode 205 has a cylindrical shape. The outer diameter of the sacrificial electrode 205 is equal to the size of the outer diameter of the sacrificial electrode 5 of the first embodiment. That is, the outer diameter of the sacrificial electrode 205 is smaller than the inner diameter of the guide pipe 206.

  As described above, the sacrificial electrode 205 is formed of a metallic material (a metallic material having a high ionization tendency) that is less noble than the connection tube portion 3. That is, the sacrificial electrode 205 is formed of a material having a property of being more easily corroded than gray cast iron (connection pipe 3) when disposed in water. Specifically, the sacrificial electrode 205 is formed of a material containing zinc.

  The guide pipe 206 is provided at the upper end with an introduction hole 261 opened upward (in the Z1 direction). In the second embodiment, unlike the first embodiment in which the upper end of the guide pipe 6 is fixed to the side wall W via the fixing member K, the guide pipe 206 is fixed to the outer peripheral surface of the guide pipe 206 It is being fixed to the side wall W via the member K1.

  The lifting tool 7 is configured such that the sacrificial electrode 205 is placed (placed). The lifting tool 7 is configured to be introduced into the guide pipe 206 from the introduction hole 261 together with the sacrificial electrode 205 in a state where the sacrificial electrode 205 is installed (mounted). The lifting tool 7 is a tool for lifting and lowering the sacrificial electrode 205 in the guide pipe 206.

  In detail, the wire member 71 shown in FIG. 5 is a member having conductivity. The wire member 71 is formed of a metallic material nobler than the sacrificial electrode 205. The wire member 71 may not have conductivity.

  The plate member 72 has a disk shape, and the outer diameter of the plate member 72 is smaller than the inner diameter of the guide pipe 206. The plate-like member 72 is formed of a conductive metal material. The plate member 72 is configured such that one end 71 a of the wire member 71 is connected to the center of the upper surface 72 a and is suspended by the wire member 71.

  The sacrificial electrode 205 is placed on the plate-like member 72 connected to the one end 71 a of the wire member 71 with the wire member 71 inserted through the opening 205 a from the other end (not shown) of the wire member 71. Is configured as. That is, the lower surface 205 b of the sacrificial electrode 205 abuts on the upper surface 72 a of the plate-like member 72. As a result, the sacrificial electrode 205 and the plate member 72 are electrically conducted.

  The sacrificial electrode 205 is configured to be introduced into the guide pipe 206 from the introduction hole 261 in a state of being mounted on the plate-like member 72. The sacrificial electrode 205 is configured to be installed on the support portion 34 via the plate-like member 72.

  The sacrificial electrode 205 is configured to be supported by the plate-like member 72 in a state in which the plate-like member 72 is suspended and floated by the wire member 71. In this state, the sacrificial electrode 205 and the connection pipe portion 3 are not electrically conducted.

  On the other hand, the sacrificial electrode 205 is configured to be supported by the support portion 34 in a state where the plate-like member 72 is disposed on the support portion 34. In this state, the sacrificial electrode 205 and the connection tube portion 3 are electrically connected to each other through the plate-like member 72.

  The plate-like member 72 is formed of a metallic material nobler than the sacrificial electrode 5. For example, the plate member 72 is formed of a stainless steel material.

(Effect of the second embodiment)
In the second embodiment, the following effects can be obtained.

  In the second embodiment, as described above, with the sacrificial electrode 5 placed on the conductive plate member 207b connected to and suspended from one end of the wire member 207a, the guide pipe is inserted from the introduction hole 61 It is introduce | transduced in 206, and it comprises so that it may install on the support part 34 via the plate-shaped member 207b. Thus, the sacrificial electrode 5 can be moved up and down together with the plate member 207b through the wire member 207a, so that the posture of the sacrificial electrode 5 can be stabilized when introducing the sacrificial electrode 5 into the guide pipe 206. The remaining amount of the sacrificial electrode 5 can be easily confirmed by pulling up using the wire member 207a. In addition, the remaining amount of the sacrificial electrode 5 can be accurately grasped.

  In the second embodiment, as described above, the sacrificial electrode 5 is supported by the plate-like member 207 b in a state where the plate-like member 207 b is suspended by the wire member 207 a and floats from the support portion 34. It is configured to be supported by the support portion 34 in a state where the 207 b is installed on the support portion 34. Thus, the sacrificial electrode 5, the plate member 207b, and the support portion 34 can be brought into contact with each other by the weight of the sacrificial electrode 5 and the plate member 207b, so that the posture of the sacrificial electrode 5 is made horizontal on the plate member 207b. While being able to hold | maintain and to install stably on the support part 34, electrical conduction of the sacrificial electrode 5 and the support part 34 can be easily ensured via the plate-shaped member 207b.

  In the second embodiment, as described above, the sacrificial electrode 5 is provided with the opening 205a in which the hole or the notch through which the wire member 207a is inserted is formed. Thereby, since the sacrificial electrode 5 can be inserted through the wire member 207a, the plurality of sacrificial electrodes 5 can be stacked in a line in the vertical direction along the wire member 207a, and in the horizontal direction of the sacrificial electrode 5 Can regulate the movement of As a result, when the sacrificial electrode 5 moves up and down in the guide pipe 206, the sacrificial electrode 5 can be prevented from dropping off from the plate member 207b and the sacrificial electrode 5 can be prevented from being biased in the horizontal direction. .

(Modification)
It should be understood that the embodiments disclosed herein are illustrative and non-restrictive in every respect. The scope of the present invention is indicated not by the description of the embodiments described above but by the claims, and further includes all modifications (modifications) within the meaning and scope equivalent to the claims.

  For example, although the example which made a support part a part of connection pipe part was shown in the said, 1st and 2nd embodiment, this invention is not limited to this. In the present invention, if the support is in electrical communication with the sacrificial electrode and the connection tube, the support and the connection tube may be configured separately. Specifically, for example, the support portion may be configured by a metal bolt screwed to the connection pipe portion.

  Moreover, although the example which provided the support part in the leg part of the connection pipe part was shown in said 1st and 2nd embodiment, this invention is not limited to this. In the present invention, the support may be provided not on the legs of the connection pipe but on the pipe.

  Moreover, although the example which provided the water conveyance hole in the guide pipe was shown in said 1st and 2nd embodiment, this invention is not limited to this. In the present invention, as long as sufficient water can be introduced to the guide pipe by the gap, the guide pipe does not have to be provided with the introduction hole.

  Moreover, although the example comprised so that a sacrificial electrode might be introduce | transduced into two guide pipes was shown in said 1st and 2nd embodiment, this invention is not limited to this. In the present invention, the sacrificial electrode may be introduced into only one of the two guide pipes.

  Moreover, although the submersible pump installation showed the example provided with two guide pipes in the said, 1st and 2nd embodiment, this invention is not limited to this. In the present invention, the submersible pump equipment may have one or more guide pipes, as long as the guide pipe can guide the elevation of the submersible pump.

  Moreover, in the said 1st Embodiment, although the example which comprised the introduction hole which introduce | transduces a sacrificial electrode in a guide pipe by the horizontal hole was shown, this invention is not limited to this. In the present invention, as in the second embodiment, an introduction hole for introducing the sacrificial electrode into the guide pipe may be provided to face upward at the upper end of the guide pipe.

  Moreover, although the example which formed the sacrificial electrode by the material containing zinc was shown in the said, 1st and 2nd embodiment, this invention is not limited to this. In the present invention, for example, the sacrificial electrode may be formed of a metal material which contains aluminum or magnesium and which is thinner than the material forming the connection pipe portion, the guide pipe and the like.

  Moreover, although the example which formed the connecting pipe part with gray cast iron was shown in said 1st and 2nd embodiment, this invention is not limited to this. In the present invention, for example, the connecting pipe portion may be formed of a metallic material which is nobler than a sacrificial electrode other than gray cast iron, such as a stainless steel material or a material containing copper.

  In the first and second embodiments, the casing and the guide hook of the submersible pump are made of metal. However, the present invention is not limited to this. In the present invention, for example, the casing and the guide hook of the submersible pump may be formed of a resin material.

  Moreover, although the example which made the plate-shaped member of the raising / lowering tool into metal (stainless steel material) was shown in the said 2nd Embodiment, this invention is not limited to this. In the present invention, as long as the plate-like member has conductivity, the plate-like member may be formed of a resin material.

  Moreover, although the example which formed the opening part of the sacrificial electrode by the hole was shown in the said 2nd Embodiment, this invention is not limited to this. In the present invention, the opening of the sacrificial electrode may be formed by a notch. Specifically, the opening of the sacrificial electrode may be formed in a C-shape in plan view.

DESCRIPTION OF SYMBOLS 1 Submersible pump 3 Connection pipe part 3a one end opening part 5 sacrificial electrode 6, 206 guide pipe 15b Discharge port 31 pipe part 33 leg part 34 Support part (guide pipe attachment part, convex part)
61 Introduction hole 63 Water conveyance hole 100, 200 Submersible pump equipment 205a Opening 207a Wire member 207b Plate-like member S Clearance portion H1 Installation surface

Claims (12)

A metal connection pipe installed in the water,
A sacrificial electrode which is formed of a metal material thinner than the connection pipe portion and which is corroded by a galvanic anode method;
An introduction hole for introducing the sacrificial electrode inward is provided in the vicinity of the upper end, and a vertically extending guide pipe;
A support portion provided at a lower end of the guide pipe and electrically connected to the sacrificial electrode and the connection pipe portion in a state of supporting the sacrificial electrode introduced from the introduction hole;
Submersible pump equipment comprising: a submersible pump configured to be raised and lowered along the guide pipe, and having a discharge port connected to an opening at one end of the connection pipe portion at the lowered position.   The submersible pump installation according to claim 1 in which said support part is a part of said connecting pipe part.   The submersible pump installation according to claim 1 or 2 with which said supporter is constituted by a guide pipe attaching part arranged near the installation side of said connecting pipe part.   The submersible pump installation according to claim 3, wherein said guide pipe attachment part comprises a convex part which protrudes upward and fits into said guide pipe.   The sacrificial electrode is introduced from the introduction hole into the guide pipe in a state of being mounted on a conductive plate-like member that is connected to and suspended from one end of a wire member, and is inserted via the plate-like member. The submersible pump installation of any one of Claims 1-4 comprised so that it might install on the said support part.   The sacrificial electrode is supported by the plate-like member in a state in which the plate-like member is suspended by the wire member and floated from the support portion, and the plate-like member is installed on the support portion. Submersible pump installation according to claim 5, configured to be supported by a support.   The submersible pump installation according to claim 5 or 6, wherein the sacrificial electrode includes an opening formed by a hole or a notch through which the wire member is inserted.   The said support part is a part of the said connection pipe part, and it is comprised so that electrical conduction with the said sacrificial electrode may be carried out by contact | abutting the said sacrificial electrode directly. Submersible pump equipment according to item 1.   The said connection pipe part is a pipe part which has a flow path of water, The said support part is provided, The leg part which supports the said pipe part from the downward direction WHEREIN: It is any one of Claims 1-4. Submersible pump equipment.   In the guide pipe, a confirmation hole for confirming the presence or absence of the sacrificial electrode in the guide pipe is provided at a predetermined height position below the introduction hole and at the upper side of the support portion. Submersible pump installation according to any of the preceding claims.   The submersible pump installation of any one of Claims 1-10 in which the water conveyance hole which water-conveys in the said guide pipe is provided in the lower end vicinity of the said guide pipe.   The submersible pump installation of any one of Claims 1-11 provided with the clearance gap part which water-conveys in the said guide pipe between the said guide pipe and the said support part.

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