KR100924946B1 - Underwater moter pump equipment and cable protecting apparatus thereof - Google Patents

Abstract

PURPOSE: An underwater motor pump equipment and a cable protecting device thereof are provided to minimize the stress applied to a cable by the flow of fluid. CONSTITUTION: An underwater motor pump equipment includes a circular column pipe(10), a underwater motor pump(20), a cable(30), and a cable protection member. The column pipe includes an inlet, an outlet, and the first cable withdrawing hole. The underwater motor pump is installed at a lower end of a column pipe and comprises a pump cover in which the second cable withdrawing hole is formed. The cable is connected to the underwater motor pump through cable withdrawing holes.

Description

UNDERWATER MOTER PUMP EQUIPMENT AND CABLE PROTECTING APPARATUS THEREOF}

The present invention relates to a submersible motor pump installation, and more specifically, to minimize the stress received by the cable due to the flow of fluid (water shock, turbulence-side flow, etc.) during the start, stop or operation of the submersible motor pump, The present invention relates to an underwater motor pump facility and a cable protection device which can prevent cable damage from impacts such as foreign substances included in the cable.

In general, the column type submersible motor pump equipment is used for large-scale submersible treatment plant, agricultural irrigation, rainwater drainage pumping station, intake station, civil construction site drainage site, factory miscellaneous water drainage, cooling water supply, subway construction site, tunnel construction site, etc. In addition, its use is gradually increasing due to ease of use, maintenance cost reduction, initial investment cost reduction, and damage cost reduction in flood damage.

Despite these innumerable advantages, there are problems with cables.

The column type submersible motor pump is a circular column pipe that is used by installing the submersible motor pump in the lower part of the pipe. When the submersible motor pump starts and stops, the submersible motor pump is subjected to rapid mechanical vibration and stress. When the engine starts, water shock is applied due to the rapid flow of fluid inside the empty column pipe, and the stress of the cable reaches the poles. It will shake without it. In addition, foreign matter (rubber, lumber, gravel, gravel, stone, scraps, etc.) introduced through the suction casing during operation passes through the column pipe through the fluid, causing damage and damage to the cable.

In addition, when the pumping is completed and stopped, the fluid flowing in the discharge pipe flows back to the pumping station (pours in the opposite direction during operation), which in turn causes tremendous stress on the cable.

It is an object of the present invention to provide an underwater motor pump facility and a cable protection device that can extend the life of the underwater motor pump and enable efficient and stable pump operation.

It is also an object of the present invention to provide a submersible motor pump installation and cable protection device that is easy to disassemble, assemble and handle.

It is also an object of the present invention to provide an underwater motor pump facility and a cable protection device that can prevent the twisting of the cable connected to the underwater motor pump.

The object of the present invention is not limited thereto, and other objects not mentioned will be clearly understood by those skilled in the art from the following description.

Underwater motor pump equipment of the present invention for achieving the above object is a circular column pipe having a pipe cover formed with a suction port at the bottom, a discharge port at the side and a first cable outlet at the top; An underwater motor pump installed at a lower end of the column pipe and having a pump cover having a second cable outlet; A cable connected through a second cable outlet formed in the pump cover of the submersible motor pump through a first cable outlet of the top cover of the column pipe; And a cable protection member surrounding the cable.

According to an embodiment of the present invention, the cable protection member includes an inner tube of a bellows type; And it consists of a braided net type outer tube surrounding the inner tube, and includes a protective tube installed in a straight line.

According to an embodiment of the present invention, the cable protection member is threaded on the outer circumferential surface and welded to one end of the protection tube, the connection pipe is inserted into the first cable outlet; And first and second length adjusting nuts screwed to the connection pipe so as to be positioned on the outer and inner surfaces of the pipe cover, respectively, for adjusting the length of the protective pipe.

According to an embodiment of the present invention, the submersible motor pump installation further includes a first hermetic member connecting the cable protection member and the pump cover to prevent fluid from flowing through the second cable outlet.

According to an embodiment of the present invention, the cable protection member has a wrap joint connected to the other end of the protection tube, and further includes a protection tube flange coupled to the first hermetic member.

According to an embodiment of the present invention, the first hermetic member has a flange for fastening bolts at both ends and an inner passage through which the cable passes, and a first connector for bolting one end of the flange to the pump cover; A packing installed on the inner side of the first connector to be in contact with the outer side of the cable; And a second connector having a flange for bolting at both ends and having an inner passage through which the cable passes, and one flange of which is bolted at the other end of the first connector; The second connector includes a pusher for pressing the packing installed in the first connector.

According to an embodiment of the present invention, the second connector further includes a clamp for holding the cable so that the cable does not move.

According to an embodiment of the present invention, the first hermetic member includes: a first connector having a packing installed to interview the outer surface of the cable; And a second connector coupled to the first connector and having a clamp for preventing the flow of the cable.

According to an embodiment of the present invention, the second connector includes a body having an opening that is open on an outer surface to expose the cable, and the clamp is a curved surface that presses the side of the cable exposed through the opening. And a fixing portion extending from both ends of the curved portion and bolted to the body.

Underwater motor pump equipment of the present invention for solving the above problems is a circular column pipe having a pipe cover formed with a suction port at the bottom, a discharge port at the side and a first cable outlet at the top; An underwater motor pump installed at a lower end of the column pipe and having a pump cover having a second cable outlet; A cable connected through a second cable outlet formed in the pump cover of the submersible motor pump through a first cable outlet of the top cover of the column pipe; A protective tube having a flexible double tube structure surrounding the cable; A connection pipe coupled to one end of the protective tube and formed on an outer circumferential surface of a screw thread inserted into the first cable outlet; And first and second length adjusting nuts screwed to the connection pipe so as to be positioned on the outer and inner surfaces of the pipe cover, respectively, for adjusting the length of the protective pipe.

According to an exemplary embodiment of the present invention, the apparatus may further include a first hermetic member connecting the cable protection member and the pump cover to prevent the fluid from flowing through the second cable outlet.

According to an embodiment of the present invention, the first hermetic member includes: a first connector having a packing installed to interview the outer surface of the cable; And a second connector coupled to the first connector and having a clamp for preventing the flow of the cable; The second connector includes a body having an opening that is open to an outer surface to expose the cable, the clamp is a curved surface portion for pressing the side of the cable exposed through the opening, and from both ends of the curved portion And a fixed portion extending and bolted to the body.

Cable protection device of the present invention for solving the above problems is a protective tube of a flexible double pipe structure to surround the cable connected to the pump cover of the submersible motor pump through the top cover of the column pipe; A first connection part installed at one end of the protective tube and configured to adjust the length of the protective tube to a portion where the protective tube and the upper cover are connected; It is installed on the other end of the protective tube and the portion is connected to the protective tube and the pump cover includes a second connection for the rotation of the protective tube.

According to an embodiment of the invention, the protective tube is a flexible bellows tube; And it is installed so as to surround the outside of the bellows pipe, the stainless steel wire is made of a braided mesh type outer tube made of a mesh.

According to an embodiment of the present invention, the first connecting portion may be welded to the connection pipe threaded at one end of the protective pipe, and the length of the protective pipe can be adjusted by installing two length adjusting nuts in the connecting pipe.

According to an embodiment of the present invention, the second connecting portion includes a protective tube flange having a wrap joint coupled to the other end of the protective tube.

According to an embodiment of the present invention, a first connector is installed in the pump cover, the packing is installed to interview the outer surface of the cable; And a second connector connecting the protective tube flange and the first connector and having a clamp for preventing the flow of the cable.

According to an embodiment of the present invention, the second connector further includes a pusher for pressing a packing installed in the first connector.

According to the present invention, the stress of the cable caused by the flow of fluid (water shock, turbulence-side flow, etc.) during the start, stop, or operation of the submersible motor pump is minimized, and the cable is prevented from the impact of foreign matters contained in the fluid. Damage can be prevented.

In addition, the present invention can ensure long-term and stable use of the submersible motor pump.

Moreover, according to the present invention, the assembly and disassembly are easy and the handling is convenient, so the workability in the field is excellent.

Hereinafter, with reference to the accompanying drawings will be described in detail the submersible motor pump equipment according to an embodiment of the present invention. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

(Example)

1 is a front sectional view showing an underwater motor pump installation according to the first embodiment.

Referring to FIG. 1, the submersible motor pump facility 1 includes a column pipe 10, an submersible motor pump 20, a cable 30, and a cable protection device 100. In the present invention, the cable protection device 100 may be applied to the submersible motor pump equipment 1 of the concrete structure type as well as the submersible motor pump equipment 1 of the column pipe (suspension type) method. Here, the column pipe 10 is a housing in which a pump serving as a passage for guiding the fluid so that the fluid drawn by the submersible motor pump 20 is guided to another place is installed, and the pump housing is shown in FIGS. 7 and 8. The same concrete structure can also be applied. That is, in FIG. 7 and FIG. 8, the concrete structure having the suction port and the discharge port serves as the column pipe 10.

The column pipe 10 has a cylindrical pipe structure, the inlet 12 is opened at the lower end, the outlet 14 is opened at the upper side, and the cable 30 is drawn out to the outside at the upper end thereof. One cable outlet 16 (shown in FIG. 5) has a pipe cover 18 formed therein.

The submersible motor pump 20 includes a motor 22 generating a rotational power on the upper side and a casing 24 positioned below the motor 22 and provided with a propeller (not shown) therein. An upper portion of the motor 22 has a pump cover 28 having a second cable outlet 26 (shown in FIG. 4) formed so that the cable 30 can be drawn out.

The cable 30 is a cable for supplying power to the submersible motor pump 20 and a cable for transmitting an operation signal of the submersible motor pump to check the operation state of the submersible motor pump by an external monitoring device (not shown). Can be distinguished. In this embodiment, the power supply cable and the operation signal cable are separately installed, but in some cases, they may be used as one integrated cable.

The cable protection device 100 is for protecting the cable 30 located in the column pipe 10 in which the fluid flows, and the cable protection device will be described in detail below.

2 and 3 are a perspective view and a cross-sectional view showing the cable protection device shown in FIG. Figure 4 is an enlarged view of the main part showing the connection portion of the cable protector and the pump cover. Figure 5 is an enlarged view of the main part showing the connection portion of the cable protector and the pipe cover.

2 to 5, the cable protection device 100 includes a protection tube 110, a first connection part 120, a second connection part 130, a first hermetic member 200, and a second hermetic member 300. It includes.

The protective tube 110 is formed of a double tube structure consisting of the inner tube 112 and the outer tube 114 to surround the cable (30). Specifically, the inner tube 112 is made of a bellows tube of a flexible stainless steel material smooth inside. The inner tube 112 of this structure not only prevents the cable 30 from being scratched, but also protects the cable because of its excellent flexibility, flex resistance, pressure resistance, and corrosion resistance (chemical resistance).

The outer tube 114 is made of a braided net type tube in which stainless steel wire is woven in a mesh form. The outer tube 114 of the structure protects the cable 30 from the impact of foreign matter contained in the fluid, prevents corrosion, and removes the stress applied to the cable 30, while extending in the longitudinal thrust. Can be prevented.

The first connector 120 is installed at one end of the protective tube 110. The first connection part 120 is a portion to which the protective pipe 110 and the pipe cover 18 are connected, and includes a connection pipe 122 and first and second length adjusting nuts 124 and 126. The connection pipe 122 is welded to one end of the protective tube 110. The connection pipe 122 is inserted into the first cable outlet 16 of the pipe cover 18. The first length adjusting nut 124 is fastened to the connecting pipe 122 so as to be located at the bottom of the pipe cover 18, and the second length adjusting nut 126 is positioned at the top of the pipe cover 18. 122). The first connection part 120 serves to fix one end of the protective tube 110 to the pipe cover 18 as well as to loosen or tighten the first and second length adjusting nuts 124 and 126 so that the protective tube 110 is straight (without bending). It has a function that can adjust the length of the protective tube 110 to be installed straight.

As such, the cable protection device 100 of the present invention can be naturally bent in the radius of curvature for ease of operation when assembling and disassembling the protection pipe 110 (easy disassembly and assembly), but is installed in the submersible motor pump facility (1). In the completed state, the installation is completed as straight as possible. That is, the cable protection device 100 adjusts the length of the protective tube 110 by loosening and tightening the first and second length adjusting nuts 124 and 126 of the first connecting portion 120 so that the protective tube 110 has a constant tension in a straight state. ) Can be maintained.

The second connecting portion 130 has a wrap joint 132 connected to the other end of the protective tube 110 and includes a protective tube flange 134 fastened to the first hermetic member 200. The wrap joint 132 has an advantage that the protective tube 110 can be easily installed and installed because the protective tube flange 134 and the protective tube 110 are manufactured to move separately. For example, the protective tube 110 is assembled in the state in which the cable 30 is connected to the submersible motor pump 20, wherein the thickness of the cable 30 is different depending on the voltage and capacity of the submersible motor pump 20, the starting method, and the like. The cable length accommodated in the column pipe 10 also varies according to the installation conditions of the site. The length and thickness of the protective tube 100 also vary according to the thickness or length of the cable 30, and the weight of the protective tube into which the cable is inserted is equivalent. Therefore, in order to bolt the protective tube flange 134 to the first hermetic member 200, the bolts can be fastened by rotating only the protective tube flange 134 instead of rotating the entire protective tube 110 to facilitate disassembly and assembly. .

The first hermetic member 200 is a portion connecting the pump cover 28 and the second connector 130, and includes a first connector 210, a packing 220, and a second connector 230.

The first connector 210 includes an inner passage through which the cable 30 passes, and a body having an upper flange 212 and a lower flange 214 for fastening bolts. In the first connector 210, the lower flange 214 is bolted to the cover flange 27 of the pump cover 28, and the upper flange 212 is bolted to the lower flange 236 of the second connector 230. . An O-ring 29 is provided between the lower flange 214 of the first connector 210 and the cover flange 27 of the pump cover 28 for airtightness. Of course, the O-ring groove for installing the O-ring 29 is of course processed on the upper surface of the cover flange (27).

The packing 220 is installed to contact the outer surface of the cable 30 on the inner surface of the first connector 210.

The second connector 230 has a passage 232 through which the cable passes, an opening 240 through which the upper flange 234 and the lower flange 236, the pressing protrusion 238, and the cable 30 are exposed. ), A clamp 250 for pressing and fixing the outer surface of the cable 30 exposed through the opening 240, and a body having fixing ribs 242 to which the clamp 250 is fixed.

In the second connector 230, the lower flange 236 is bolted to the upper flange 212 of the first connector 210. At this time, while the pressing protrusion 238 presses the packing 220 installed on the inner surface of the first connector 210, the airtightness between the packing 220 and the cable 30 is improved.

6 is a plan sectional view showing the cable fixed by the clamp.

As shown in FIGS. 3 and 6, the clamp 250 includes a curved portion 252 that presses the exposed cable 30 through the opening 240 to prevent the cable 30 from flowing. And a fixing part 254 extending from both ends of the 252 and bolted to the fixing rib 242 of the second connector 230. As shown in FIG. 6, the curved portion 252 of the clamp 250 presses the cable 30, thereby preventing the flow of the cable.

As described above, the second connector 230 has a complex function of fixing the cable to prevent the flow of the cable 30 as well as the function of pressing the packing.

Referring to FIG. 5 again, the second hermetic member 300 is for hermetic sealing of the first cable outlet 16 of the pipe cover 18 through which the cable 30 is drawn out, and the pipe cover 18 and the 1 may correspond to the connection portion of the connection unit 120.

The second hermetic member 300 includes a third connector 310, a packing 320, and a fourth connector 330. The third connector 310 includes an inner passage through which the cable 30 passes, and a body having an upper flange 312 and a lower flange 314 for bolting. In the third connector 310, the lower flange 314 is bolted to the pipe flange 17 of the pipe cover 18, and the upper flange 312 is bolted to the lower flange 336 of the fourth connector 330. . An O-ring 19 for airtightness is installed between the lower flange 314 of the third connector 310 and the pipe flange 17 of the pipe cover 18. Of course, the O-ring groove for installing the O-ring 19 is of course processed on the upper surface of the pipe flange (17).

The packing 320 is installed on the inner side of the third connector 310 to be in contact with the outer side of the cable 30.

The fourth connector 330 includes a body having a passage 332 through which the cable passes, a lower flange 336 for bolting, and a pusher 338. In the fourth connector 330, the lower flange 336 is bolted to the upper flange 312 of the third connector 310. At this time, while the pressing protrusion 338 presses the packing 320 installed on the inner side of the third connector 310, the airtightness between the packing 320 and the cable 30 is improved.

FIG. 7 is a view showing an example in which a cable protection device is applied to an underwater motor pump facility of a concrete structure method, and FIG. 8 is a view showing an example of cable protection device to an underwater motor pump facility of an open concrete structure method.

Referring to FIGS. 7 and 8, the cable protection device 100 and the submersible motor pump 20 except for the pump housings 70 and 70 ′ made of concrete structures in the submersible motor pump installation 10 ′ are the first embodiment. Has the same configuration and effect as the configuration of the submersible motor pump installation 10 disclosed in.

However, in FIGS. 7 and 8, the pump housing, which serves as a passage for guiding the fluid so that the fluid drawn by the submersible motor pump 20 is guided to another place, is not a column pipe but a concrete structure 70, 70 ′. It's just the difference. The submersible motor pump 20 is installed in the concrete structures 70 and 70 ', and the cable 30 is connected to the submersible motor pump 20 through the top cover 78 formed on the top of the concrete structure 70 and 70'. It can be seen that the protection device 100 which is connected and protects the cable 30 has the same configuration as mentioned above.

As such, the cable protection device of the present invention can be applied regardless of the installation method of the submersible motor pump.

The underwater motor pump facility 1 according to the present invention can prevent the cable from being bent in the process of moving the underwater motor pump facility to the site by the cable protection device 100.

The installation process of the submersible motor pump facility having the above-described configuration will be briefly described as follows.

First, the pump bed, the column pipe 10 and the discharge pipe is installed first, and the protection pipe 110 and the first hermetic member 200 are connected to the underwater motor pump 20 in the column pipe 10. Install the pump 20. After the cable 30 is drawn out through the first cable outlet 16 of the pipe cover 18, the first length adjusting nut 124 is operated to adjust the fine length of the protective tube 110. After assembling the pipe cover 18, the connection pipe 122, which has come out through the first cable outlet 16, is fixed and assembled using the second length adjusting nut 126. After the cable 30 is inserted into the second hermetic member 300, the third connector 310, the packing 320, and the fourth connector 330, which are the second hermetic member 300, are sequentially bolted.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a front sectional view showing an underwater motor pump installation.

2 and 3 are a perspective view and a cross-sectional view showing the cable protection device shown in FIG.

Figure 4 is an enlarged view of the main part showing the connection portion of the cable protector and the pump cover.

Figure 5 is an enlarged view of the main part showing the connection of the cable protector and the pipe cover.

6 is a plan sectional view showing the cable fixed by the clamp.

7 is a view showing an example in which the cable protection device is applied to the submersible motor pump equipment of the concrete structure method.

8 is a view showing an example in which the cable protection device is applied to the submersible motor pump equipment of the open concrete structure method.

<Description of Symbols for Main Parts of Drawings>

10: column pipe

20: Submersible Motor Pump

30: cable

100: cable protection device

Claims (19)

delete delete In submersible motor pump equipment: A circular column pipe having a pipe cover having a suction port at a lower end thereof, a discharge hole at a side surface thereof, and a first cable outlet at an upper end thereof; An underwater motor pump installed at a lower end of the column pipe and having a pump cover having a second cable outlet; A cable connected to the submersible motor pump through the first cable outlet and the second cable outlet; And Including a cable protection member surrounding the cable; The cable protection member Bellows-type inner tube; A protective tube made of a braided net type outer tube surrounding the inner tube and installed in a straight line; A connection pipe threaded on an outer circumferential surface and welded to one end of the protective tube, and inserted into the first cable outlet; And Submersible motor pump equipment characterized in that the screw connection to the connecting pipe so as to be located on the outer surface and the inner surface of the pipe cover, respectively, the first and second length adjusting nuts for adjusting the length of the protective tube. The method of claim 3, wherein The submersible motor pump equipment And a first hermetic member connecting the cable protection member and the pump cover to prevent the fluid from flowing through the second cable outlet. In submersible motor pump equipment: A circular column pipe having a pipe cover having a suction port at a lower end thereof, a discharge hole at a side surface thereof, and a first cable outlet at an upper end thereof; An underwater motor pump installed at a lower end of the column pipe and having a pump cover having a second cable outlet; A cable connected to the submersible motor pump through the first cable outlet and the second cable outlet; A cable protection member surrounding the cable; And A first hermetic member connecting the cable protection member and the pump cover to prevent the fluid from flowing through the second cable outlet; The cable protection member Bellows-type inner tube; A protective tube made of a braided net type outer tube surrounding the inner tube and installed in a straight line; And Submersible motor pump equipment having a wrap joint connected to the other end of the protective tube, and comprises a protective tube flange coupled to the first hermetic member. The method of claim 5, wherein The first hermetic member is A first connector having a flange for bolting at both ends and an inner passage through which the cable passes, and one end of the bolt bolted to the pump cover; A packing installed on the inner side of the first connector to be in contact with the outer side of the cable; And A second connector having a flange for bolting at both ends, an inner passage through which the cable passes, and one end of the flange bolted to the other end of the first connector; The second connector is an underwater motor pump installation, characterized in that it comprises a pressing projection for pressing the packing installed in the first connector. The method of claim 6, The second connector is Submersible motor pump installation characterized in that it further comprises a clamp for holding the cable so that the cable does not move. The method of claim 4, wherein The first hermetic member is A first connector having a packing installed to be in contact with an outer surface of the cable; And An underwater motor pump installation comprising a second connector coupled to the first connector and having a clamp for preventing the flow of the cable. The method of claim 8, The second connector is A body having an opening open at an outer side thereof to expose the cable, The clamp includes a curved surface portion for pressing the side surface of the cable exposed through the opening, and a fixed portion extending from both ends of the curved portion and bolted to the body. In submersible motor pump equipment: A circular column pipe having a pipe cover having a suction port at a lower end thereof, a discharge hole at a side surface thereof, and a first cable outlet at an upper end thereof; An underwater motor pump installed at a lower end of the column pipe and having a pump cover having a second cable outlet; A cable connected to the submersible motor pump through the first cable outlet and the second cable outlet; A protective tube having a flexible double tube structure surrounding the cable; A connection pipe coupled to one end of the protective tube and formed on an outer circumferential surface of a screw thread inserted into the first cable outlet; And Submersible motor pump equipment characterized in that the screw connection to the connecting pipe so as to be located on the outer surface and the inner surface of the pipe cover, respectively, the first and second length adjusting nuts for adjusting the length of the protective tube. The method of claim 10, And a first hermetic member connecting the cable protection member and the pump cover to prevent the fluid from flowing through the second cable outlet. The method of claim 11, The first hermetic member is A first connector having a packing installed to be in contact with an outer surface of the cable; And A second connector coupled to the first connector and having a clamp for preventing flow of the cable; The second connector is A body having an opening open at an outer side thereof to expose the cable, The clamp includes a curved surface portion for pressing the side surface of the cable exposed through the opening, and a fixed portion extending from both ends of the curved portion and bolted to the body. In the cable protection device of the submersible motor pump installation in which the submersible motor pump is installed inside the pump housing in which the inlet and the outlet are formed: A protective tube of a double tube structure flexible to surround a cable connected to the pump cover of the submersible motor pump through an upper cover of the pump housing; A first connection part installed at one end of the protective tube and configured to adjust the length of the protective tube to a portion where the protective tube and the upper cover are connected; Cable protection device of the submersible motor pump equipment, characterized in that it is installed on the other end of the protection tube and the second connection portion for the rotation of the protection tube to the portion in which the protection tube and the pump cover is connected. The method of claim 13, The sheath Flexible bellows tube; And Cable protection device of the submersible motor pump installation, it is installed to surround the outside of the bellows pipe, made of a braided net type outer pipe made of a stainless steel wire weave in a mesh form. The method according to claim 13 or 14, The first connection portion of the submersible motor pump equipment, characterized in that the welding pipe is connected to one end of the protective pipe, and the length of the protective pipe can be adjusted by installing two length adjusting nuts in the connecting pipe. Cable protector. The method according to claim 13 or 14, The second connection portion is a cable protection device of the submersible motor pump installation, characterized in that it comprises a protective tube flange having a wrap joint coupled to the other end of the protective tube. The method of claim 16, A first connector installed at the pump cover and having a packing installed to interview the outer surface of the cable; And And a second connector having a clamp for connecting the protective tube flange to the first connector and preventing the flow of the cable. The method of claim 17, The second connector is Cable protection device of the submersible motor pump equipment, characterized in that it further comprises a pressing projection for pressing the packing installed in the first connector. The method of claim 13, The pump housing is a cable protection device for underwater motor pump equipment, characterized in that the circular column pipe or concrete structure.

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