KR101826499B1 - A submersible pump are provided with a cable release bracket for preventing - Google Patents

Abstract

The present invention relates to a submersible pump with a bracket for preventing a cable from breaking away. More specifically, the submersible pump comprises: a pump body; a main bracket which is fixed to the upper portion of the pump body, and is provided with a first through-hole at the center thereof; and a cable unit which includes a power cable, one end of which is connected to a power supply unit, a signal cable, one end of which is connected to a control unit, an air cable, one end of which is connected to an air connector, and a cable tube surrounding the circumferences of the power cable, the air cable, and the signal cable, and is inserted into the pump body through the first through-hole. The cable unit further includes a first elastic member which fills a space among the power cable, signal cable, air cable, and cable tube to prevent the power cable, signal cable, air cable, and cable tube from shaking. According to the present invention, the main bracket combined with the upper portion of the pump body prevents the cable unit from breaking away from the pump body. The space among the power cable, signal cable, air cable, and cable tube of the cable unit is filled with the first elastic member, thereby preventing shock caused by shaking in the cable unit.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a submersible pump,

The present invention relates to an underwater pump provided with a cable detachment prevention bracket.

More specifically, the main bracket coupled to the upper portion of the pump main body prevents the cable from being separated from the pump main body, and the first elastic member is filled in the space between the power cable, the signal cable, the air cable, Thereby preventing the occurrence of an impact caused by the shaking of the inside of the cable portion.

In general, a submersible pump is a device that is installed in water and forces the fluid to flow after sucking the fluid. The impeller is rotated by the rotational force of the motor to suck the fluid through the inlet of the casing, .

As one of the related arts, Japanese Patent No. 10-1709997 discloses a water-sprung pump.

BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a view showing a conventional water spray pump; FIG. Referring to FIG. 1, a conventional waterspray pump according to the present invention includes a wing portion formed between upper and lower plates of an impeller, and a fluid supplied between the casing and the impeller is blown by a second wing of the wing portion, And successively strikes with the first wing secondarily, thereby improving the centrifugal force of the fluid.

To be more specific, the conventional water sprute pump includes a casing 1 having an open top and a bottom in a hollow shape and having a discharge port 1a formed on an outer surface thereof; A drive motor 2 mounted on the casing 1 and provided with a rotation shaft 2a which is inserted into the casing 1 and rotatably operated at the center thereof; An upper plate 3 provided inside the casing 1 in the form of a plate to form an axial hole 3a to be engaged with the rotary shaft 2a of the driving motor 2, A lower plate 4 provided with an inlet hole 4a which is provided at a predetermined spacing and which permits the inflow of fluid flowing through the lower portion of the casing 1 at a central portion thereof and a lower plate 4 provided between the upper and lower plates 3 and 4 And an impeller 5 formed in the inlet hole 4a and having a wing 5a for discharging the fluid flowing through the inlet hole 4a in a direction orthogonal to the inlet hole 4a, The wing 5a of the impeller 5 is bent in the outer direction of the upper plate 3 at a point of the rim of the inflow hole 4a of the lower plate 4, The upper and lower plates 3 and 4 have an elbow shape for vertically connecting the outer circumferential surfaces A first wing 5aa formed between the one end and the other end to form a single discharge hole 5aaa for guiding the fluid introduced through the inlet hole 4a to be discharged in the direction of the inner circumferential surface of the casing 1; And one end thereof is connected to one end of the first wing 5aa and the other end thereof is connected between the outer circumferential surfaces of the upper and the lower plates 3 and 4 in a vertical direction and the other end is connected to the first wing 5aa And a second wing 5ab which is gradually opened and the other end is formed at a position spaced a predetermined distance from the other end of the first wing 5aa.

However, since the first and second wings 5aa and 5ab are provided to blow the fluid introduced and discharged by the impeller 5, the suction pressure and the discharge pressure can be improved, There is a problem that the water tightness which is generated when the mid-sprue pump is left in the water for a long time is not provided.

Also, there is a problem that the above-mentioned prior art is not provided with a structure for protecting a cable for transmitting a control signal for driving an underwater sprue pump or a cable for power supply.

Patent Registration No. 10-1709997 (2017.02.20.) Patent Registration No. 10-1736268 (May 10, 2017) Patent Registration No. 10-1605104 (Feb.

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and an object of the present invention is to provide a cable detachment bracket for preventing detachment of a cable portion from a main bracket coupled to an upper portion of a pump body Thereby providing an underwater pump.

Another object of the present invention is to fill a space between a power cable, a signal cable, an air cable, and a cable tube of a cable unit so that a first elastic member is filled, thereby preventing an impact caused by shaking inside the cable unit And an underwater pump provided with a bracket for preventing cable escape.

Another object of the present invention is to provide an underwater pump which is capable of preventing the fluid from flowing into the inside of the underwater pump by improving the water tightness of the underwater pump by controlling the internal pressure of the underwater pump to be higher than the external pressure, And an underwater pump provided with a bracket.

According to another aspect of the present invention, there is provided an underwater pump including a cable detachment bracket, A main bracket coupled to an upper portion of the pump body and having a first through hole at a center thereof; And a cable portion including a power cable, a signal cable, an air cable, and a cable tube surrounding the power cable, the air cable, and the signal cable, and a cable portion inserted into the pump body through the first through hole, The cable portion may further include a first elastic member filled in a space between the power cable, the signal cable, the air cable, and the cable tube to prevent the power cable, the signal cable, the air cable, do.

A first flange is coupled to the upper portion of the main bracket. The inlet of the first through hole formed at the center of the first flange is formed to be gradually narrowed from the upper portion to the lower portion. A plurality of first through holes corresponding to the plurality of first through holes are formed along the circumference of the second through hole, A plurality of screw bolts threadably engaged with the second engagement groove of the second flange and the first engagement groove of the main bracket, and a third through-hole corresponding to the first through hole at the center, And a sealing member formed with a hole and disposed between the main bracket and the second flange.

A plurality of third coupling grooves are formed on the upper surface of the second flange and a plurality of third coupling grooves are formed on the upper surface of the second flange. Clamps; A fourth through hole corresponding to the first through hole and a fourth through hole corresponding to the plurality of third coupling grooves along a circumference of the fourth through hole, the fourth through hole being disposed at an upper portion of the clamp, A third flange having a fourth coupling groove formed therein; A plurality of fixed shafts coupled to the plurality of third coupling grooves and the plurality of fourth coupling grooves to respectively fix the second flange and the third flange; And a first spring having both ends connected to the clamp and the third flange, and the cable passing through the clamp and the third flange.

The separation preventing portion may further include a second spring having both ends connected to the second flange and the clamp and the cable portion passing through the second flange and the clamp.

The clamp may have a plurality of first through grooves corresponding to the plurality of third coupling grooves along the outer periphery thereof. The clamp may be formed along a plurality of fixing shafts fixed between the second flange and the third flange, And is slidably moved.

In addition, an opening groove is formed in the side surface of the main bracket so as to open a part along the circumference of the cable portion, and a fourth flange is formed in the main bracket and a plurality of fifth fitting grooves are formed on both sides of the opening groove. Wherein the main bracket has an auxiliary bracket formed with a plurality of second through grooves corresponding to the plurality of fifth coupling grooves and a plurality of second through grooves formed on the main bracket, A plurality of screw bolts for fixing the auxiliary bracket are included, and the opening groove is provided with a second elastic member for increasing the fixing force between the cable portion, the main bracket and the auxiliary bracket by elastic deformation.

A pressure tank in which a gas supplied from the outside is compressed and stored; A first pipe connected at one end to the air connector; A second pipe having one end connected to the pressure tank; A third pipe having an outlet at one end; A first solenoid valve having one end connected to the other end of the first pipe; A second solenoid valve having one end connected to the other end of the second pipe; A third solenoid valve having one end connected to the other end of the third pipe; A connection pipe connected to the other end of the first solenoid valve, the other end of the second solenoid valve and the other end of the third solenoid valve to communicate with each other; And a control unit for controlling opening and closing of the first solenoid valve, the second solenoid valve and the third solenoid valve.

The controller controls the first solenoid valve, the second solenoid valve, and the third solenoid valve so that a pressure inside the pump main body is greater than a pressure outside the pump main body.

The controller may further include an internal pressure sensor disposed at a position adjacent to the connection pipe to measure a pressure generated in the connection pipe and a pressure sensor disposed at a position adjacent to the connection pipe, And the control unit controls the opening and closing of the first solenoid valve, the second solenoid valve and the third solenoid valve according to the pressure measured by the internal pressure sensor and the external pressure sensor.

According to the submerged pump provided with the cable detachment bracket according to the embodiment of the present invention, the main bracket coupled to the upper part of the pump main body can prevent the cable part from being separated.

According to the present invention, since the first elastic member is filled in the space between the power cable, the signal cable, the air cable, and the cable tube of the cable unit, the shock caused by the shaking inside the cable unit can be prevented.

Further, according to the present invention, the inner pressure of the submersible pump is controlled to be maintained higher than the external pressure, thereby improving the watertightness of the submersible pump, thereby preventing the submergence of the submerged pump into the underwater pump.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a conventional water spray pump. FIG.
2 is a view showing an underwater pump including a cable detachment prevention bracket according to the present invention.
3 is a view showing a main bracket of an underwater pump provided with a cable detachment prevention bracket according to the present invention.
4A and 4B are views showing a second flange of an underwater pump equipped with a cable detachment prevention bracket according to the present invention.
5A to 5E are views showing a departure prevention portion of an underwater pump provided with a cable release preventing bracket according to the present invention.
6A and 6B are views showing an auxiliary bracket of an underwater pump provided with a cable detachment prevention bracket according to the present invention.
7 is a block diagram showing a gas supply unit of an underwater pump provided with a cable detachment prevention bracket according to the present invention.
8 is a view showing a gas supply unit of an underwater pump provided with a cable detachment prevention bracket according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

It is to be understood that when an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, .

On the other hand, when an element is referred to as being "directly connected" or "directly connected" to another element, it should be understood that there are no other elements in between.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term "comprises" or "having ", etc. is intended to specify the presence of stated features, integers, steps, operations, elements, parts, or combinations thereof, And does not preclude the presence or addition of one or more other features, integers, integers, steps, operations, elements, components, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be construed as ideal or overly formal in meaning unless explicitly defined in the present application Do not.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concept of the term appropriately in order to describe its own invention in the best way. The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention. Further, it is to be understood that, unless otherwise defined, technical terms and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Descriptions of known functions and configurations that may be unnecessarily blurred are omitted. The following drawings are provided by way of example so that those skilled in the art can fully understand the spirit of the present invention. Therefore, the present invention is not limited to the following drawings, but may be embodied in other forms. In addition, like reference numerals designate like elements throughout the specification. It is to be noted that the same elements among the drawings are denoted by the same reference numerals whenever possible.

According to the present invention, the main bracket coupled to the upper portion of the pump main body prevents the cable from being separated from the pump main body, and the first elastic member is filled in the space between the power cable, the signal cable, the air cable, To a submersible pump having a cable detachment prevention bracket capable of preventing the occurrence of an impact caused by shaking of the inside of the unit.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a submersible pump having a cable detachment bracket according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a view showing an underwater pump provided with a cable detachment prevention bracket according to the present invention, and FIG. 3 is a view showing a main bracket of an underwater pump having a cable detachment bracket according to the present invention.

2 and 3, the underwater pump provided with the cable detachment-preventing bracket of the present invention comprises a pump body 10, a first through hole 21 connected to an upper portion of the pump body 10, A signal cable 32, an air cable 33 and a cable that surrounds the periphery of the power cable 31, the air cable 33, and the signal cable 32. The main cable 20, the main cable 20, the signal cable 32, And a cable portion 30 including a tube 34 and inserted into the pump body 10 through the first through hole 21. [ The cable 30 is filled with a space between the power cable 31, the signal cable 32, the air cable 33 and the cable tube 34 so that the power cable 31, the signal cable 32 ), The air cable 33, and the cable tube 34, as shown in Fig. At this time, the pump body 10 may be provided with a mechanical seal 15 and an oil seal 16 to maintain watertightness in the pump body 10. [

The pump main body 10 may include a driving motor 11, an impeller 12, an inlet port 13 and a discharge port 14. The pump main body 10 may include a power supply cable 31, Is supplied to the drive motor 11 so that the drive motor 11 rotates the impeller 12 inside the pump body 10 to forcibly move the fluid outside the pump body 10 do.

More specifically, when the driving motor 11 drives the impeller 12, fluid outside the pump body 10 is sucked into the pump body 10 through the inlet 13 And the sucked fluid is discharged to the outside of the pump body 10 through the discharge port 14 of the pump body 10 to move the fluid.

The main bracket 20 is configured to fix the cable unit 30 in a state where the main bracket 20 is coupled to the upper portion of the pump body 10 with screws or bolts. At this time, the main bracket 20 may fix the cable unit 30 by fixing the cable unit 30 by various methods other than the method described later.

As described above, the cable unit 30 includes a power cable 31 and a signal cable 32 for driving the pump body 10 and an air pump 32 for injecting gas into the pump body 10 And a cable tube 34 that surrounds and protects the periphery of the cable 33 and the power cable 31, the signal cable 32 and the air cable 33. The signal cable 32 includes a plurality of signal cables The signal cable 32 and the air cable 33 are provided in the cable tube 34 in the present invention, and the power cable 31, the signal cable 32, However, according to the embodiment, a cable necessary for driving the pump body 10 may be additionally provided inside the cable tube 34, and the air cable 33 is connected to the power cable 31 and the signal cable 32 or a plurality of cables It is configured to be disposed in the center there is a vibration which can be generated in the course of the gas supply can be configured to be fully charged by the plurality of cables.

The first elastic member 35 filled in the cable tube 34 to prevent the vibration between the power cable 31, the signal cable 32, the air cable 33 and the cable tube 34 The first elastic member 35 may be filled in the cable tube 34 after all the cables provided in the cable tube 34 are seated and the method of filling the first elastic member 35 in the cable tube 34 may be variously implemented For example.

The power cable 31 may be connected to the power supply 119a of the controller 119 and the signal cable 32 may be connected to the controller 119. The air cable 33 may be connected to the first pipe Lt; RTI ID = 0.0 > 112 < / RTI > This is for injecting a gas so that the pressure inside the pump body 10 can be maintained to be greater than the pressure outside the pump body 10.

4A and 4B are views showing a second flange of a submersible pump equipped with a cable detachment-preventing bracket according to the present invention.

4A and 4B, a first flange 25 may be coupled to an upper portion of the main bracket 20 of the present invention, and a first through hole (not shown) formed at the center of the first flange 25 21 may be formed in a shape that gradually narrows from the upper part to the lower part and a plurality of first coupling grooves 22 may be formed along the circumference of the first through hole 21. In the present invention, A second through hole 41 corresponding to the first through hole 21 is formed at the center and a plurality of the through holes 41 are formed along the circumference of the second through hole 41, A second flange 40 formed with a plurality of second coupling grooves 42 corresponding to the first coupling groove 22 and a second flange 40 formed with the second coupling groove 42 of the second flange 40, A plurality of screw bolts 50 screwed into the first engagement grooves 22 of the first through holes 25 and a third through hole 61 corresponding to the first through holes 21 at the center, Bracket 20 and the sealing member 60 is disposed between the second flange (40) may be further included.

That is, by securing the second flange 40 to the main bracket 20 with the sealing member 60 disposed between the main bracket 20 and the second flange 40, And the member 60 is configured to fix the cable portion 30.

The sealing member 60 may be configured to have a larger area than a space between the main bracket 20 and the second flange 40, And the third through hole 61 corresponding to the first through hole 21 may be formed to allow the cable portion 30 to be inserted and to be disposed between the main bracket 20 and the second flange 40 Any shape can be formed in various shapes depending on the manufacturing environment.

In the present invention, the sealing member 60 is provided only between the main bracket 20 and the third flange 72, that is, on the upper side of the main bracket 20, So that the cable portion 30 can be easily fixed to the main bracket 20.

5A to 5E are views showing a departure prevention part of an underwater pump provided with a cable detachment prevention bracket according to the present invention.

5A to 5E, a plurality of third engagement grooves 43 may be formed on the upper surface of the second flange 40 of the present invention along the outer circumference of the second flange 40, A clamp 71 which is coupled to the outer periphery of the cable portion 30 that has passed through the second through hole 41 of the second flange 40 is provided on the upper portion of the clamp 71, A fourth through hole 72a corresponding to the first through hole 21 and the second through hole 41 is formed at the center and the third through hole 72a is formed along the periphery of the fourth through hole 72a, A third flange 72 formed with a plurality of fourth coupling grooves 72b corresponding to the plurality of third coupling grooves 43 and the plurality of fourth coupling grooves 72b, A plurality of fixing shafts 73 for fixing the flanges 40 and the third flanges 72 and both ends of the clamps 71 and the third flanges 72 are coupled to each other, The first spring (74), which is passed through, A portion 70 may be further included.

The third engaging groove 43 may be formed at a position intersecting with the second engaging groove 42. The second engaging groove 42 may have a shape passing through the second flange 40 While the third engagement groove 43 may be formed only on the upper surface of the second flange 40. [

That is, the release preventing portion 70 prevents the cable portion 30 from falling out of the pump body 10 in an upward direction. When the cable portion 30 is moved upward, the cable portion 30 The first spring 74 having elasticity is compressed between the upper portion of the clamp 71 and the third flange 72 so that the first spring 74 is compressed, So that the cable portion 30 is moved downward by the elasticity of the first spring 74.

The separation preventing portion 70 may further include a second spring 75 having both ends connected to the second flange 40 and the clamp 71 and through which the cable 30 passes .

That is, when the cable portion 30 moves in the upward direction, the first spring 74 compresses and can exhibit elasticity. When the cable portion 30 moves downward, the second spring 75 Is compressed and can exhibit elasticity.

When one end of the first spring 74 is configured to be coupled to the clamp 71 and one end of the second spring 75 is configured to be coupled to the clamp 71, The first spring (74) is compressed and the second spring (75) is inflated when the unit (30) moves upward, and when the cable (30) moves downward, the first spring The spring 74 is inflated and the second spring 75 is configured to be compressed so that the first spring 74 and the second spring 75 together exhibit elasticity so that the cable portion 30 can be more easily rotated To return to.

The clamp 71 may be formed with a plurality of first through grooves 71a corresponding to the plurality of third coupling grooves 43 along the outer periphery of the clamp 71, May be configured to slide along a plurality of fixed shafts (73) fixed between the first flange (40) and the third flange (72).

That is, when the first through-hole 71a of the clamp 71 is fixed by passing through the fixing shaft 73, the movement of the cable portion 30 can be limited only in the upper direction and the lower direction , So that the cable portion (30) can be more stably fixed to the pump body (10).

6A and 6B are views showing an auxiliary bracket of an underwater pump provided with a cable detachment prevention bracket according to the present invention.

6A and 6B, an opening groove 23 may be formed on a side surface of the main bracket 20 according to the present invention so as to open a predetermined portion along the circumference of the cable portion 30. As shown in FIG.

An opening groove 23 is formed in a side surface of the main bracket 20 so that the main bracket 20 can directly contact the cable portion 30 through the opening groove 23 of the main bracket 20, The main bracket 20 and the cable portion 30 may be further easily secured to the main bracket 20 by providing a separate elastic member or the like.

The main bracket 20 may be provided with a fourth flange 26 having a plurality of fifth engagement grooves 24 formed on both sides of the opening groove 23, An auxiliary bracket 80 formed with a plurality of second through grooves 81 corresponding to the plurality of fifth coupling grooves 24 and a plurality of second through grooves 81, And the plurality of screw bolts 50 may be respectively coupled to the main bracket 20 and the auxiliary bracket 80. The opening groove 23 may be formed in the cable portion 30 by elastic deformation, A second elastic member 90 for increasing the fixing force between the main bracket 20 and the auxiliary bracket 80 can be provided.

That is, the opening groove 23 is provided with a second elastic member 90 having elasticity, and the second elastic member 90 has an area larger than that of the opening groove 23, The auxiliary bracket 80 is disposed above the opening groove 23 provided with the screw hole 90 and the plurality of screw bolts are fastened to the fifth coupling groove 24 and the second through hole 81, So that the bracket 80 can be fixed to the main bracket 20.

The second elastic member 90 provided in the opening groove 23 of the main bracket 20 is compressed by the engagement of the auxiliary bracket 80 and the main bracket 20, So that the cable portion 30 can be fixed to the main bracket 20.

FIG. 7 is a block diagram showing a gas supply unit of an underwater pump equipped with a cable detachment prevention bracket according to the present invention, and FIG. 8 is a view illustrating a gas supply unit of a submersible pump provided with a cable detachment bracket according to the present invention.

7 and 8, the submerged pump provided with the cable detachment-preventing bracket of the present invention is provided with a gas supply such that the pressure inside the pump main body 10 is greater than the pressure outside the pump main body 10 And a gas supply unit 110 for preventing the fluid from flowing into the pump body 10.

In this case, the dotted line in Fig. 7 shows the electrical connection, and the solid line shows the physical connection.

The gas supply unit 110 includes a pressure tank 111 in which a gas supplied from the outside is compressed and stored, a first pipe 112 having one end connected to the air cable 33, a first pipe 112 connected to the pressure tank 111, A third solenoid valve 115 having one end connected to the other end of the first pipe 112 and a third solenoid valve 115 connected to the other end of the first pipe 112, A second solenoid valve 116 connected to the other end of the second pipe 113, a third solenoid valve 117 having one end connected to the other end of the third pipe 114, The other end of the second solenoid valve 116 and the other end of the third solenoid valve 117 are connected to each other so that the first solenoid valve 115, the second solenoid valve 116, And a control unit 119 for controlling the opening and closing of the solenoid valve 117.

At this time, the controller 119 controls the first solenoid valve 115, the second solenoid valve 116, and the first solenoid valve 115 so that the pressure inside the pump main body 10 is maintained to be greater than the pressure outside the pump main body 10, So that the third solenoid valve 117 can be controlled.

The pressure tank 111 is a chamber in which a gas supplied from the outside is compressed and stored. In the state where the gas is continuously supplied and stored in a compressor provided outside, So that compressed gas can be supplied to the main body 10.

The connection pipe 118 is connected to the first solenoid valve 115 and the second solenoid valve 115 so that the other end of the first solenoid valve 115, the other end of the second solenoid valve 116, The second solenoid valve 116 and the third solenoid valve 117, and may be a pipe having a T shape or a Y shape.

The control unit 119 controls the gas supplied from the pressure tank 111 to the pump body 10 and controls the gas discharged from the pump body 10 so that the pressure inside the pump body 10 As shown in FIG.

The control unit 119 controls the pressure inside the pump body 10 to be greater than the pressure outside the pump body 10 so that the fluid outside the pump body 10 flows into the pump body 10 So that it can be prevented from flowing into the inside.

The control unit 119 may include an internal pressure sensor 120 disposed adjacent to the connection pipe 118 to measure a pressure generated in the connection pipe 118 and an internal pressure sensor 120 disposed adjacent to the connection pipe 118. [ The control unit 119 may be provided with an internal pressure sensor 120 and an external pressure sensor 121. The external pressure sensor 121 may measure the pressure generated from the outside of the connection pipe 118, The second solenoid valve 116, and the third solenoid valve 117 according to the pressure measured by the first solenoid valve 115, the second solenoid valve 116, and the third solenoid valve 117, respectively.

That is, the control unit 119 opens only the first solenoid valve 115 of the first solenoid valve 115, the second solenoid valve 116 and the third solenoid valve 117, The second solenoid valve 116 is further opened to increase the pressure of the pump main body 10 when the pressure measured through the internal pressure sensor 120 is lower than the pressure reference value When the pressure measured through the internal pressure sensor 120 is higher than the pressure reference value, the third solenoid valve 117 is further opened to control the pressure of the pump main body 10 to be reduced. have.

This is because when the pressure inside the pump body 10 is lower than the pressure outside the pump body 10, fluid outside the pump body 10 can be introduced into the pump body 10, If the pressure inside the main body 10 is excessively high, the internal parts of the pump main body 10 may become unreliable.

The control unit 119 compares the pressure measured through the internal pressure sensor 120 with the first pressure reference value when the driving motor 11 is in the stopped state and the control unit 119 determines that the driving motor 11 is in the operating state And to compare the pressure measured through the internal pressure sensor 120 with a second pressure reference value.

At this time, when the drive motor 11 is in an operating state, a change in the pressure outside the pump body 10 and a pressure inside the pump body 10 due to disturbances generated by the operation of the drive motor 11 The second pressure reference value, which is compared with the pressure measured when the drive motor 11 is in the operating state, is larger than the first pressure reference value < RTI ID = 0.0 > It can be set to a higher pressure.

For example, when the pump main body 10 is installed at a depth of about 10 m and the pressure generated from the outside of the pump main body 10 is 1 atm, when the drive motor 11 is stopped The first pressure reference value to be compared with the measured pressure may be set to 2 atm and the second pressure reference value to be compared with the pressure measured when the drive motor 11 is in the driving state, By setting the pressure higher than the reference value, it is possible to prevent the fluid outside the pump body 10 from flowing into the pump body 10.

According to the present invention, the main bracket coupled to the upper portion of the pump main body prevents the cable from being separated from the pump main body, and the first elastic member is filled in the space between the power cable, the signal cable, the air cable, So that it is possible to prevent the occurrence of an impact caused by the shaking of the inside of the cable portion.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It can be seen that branch substitution, modification and modification are possible.

10: pump body 11: drive motor
12: impeller 13: inlet
14:
20: main bracket 21: first through hole
22: first coupling groove 23: open groove
24: fifth engaging groove 25: first flange
26: Fourth flange
30: Cable part 31: Power cable
32: Signal cable 33: Air cable
34: cable tube 35: first elastic member
40: second flange 41: second through hole
42: second engaging groove 43: third engaging groove
50: Screw bolt
60: sealing member 61: third through hole
70:
71: clamp 71a: first through groove
72: third flange 72a: fourth through hole
72b: fourth engaging groove
73: fixed shaft 74: first spring
75: Second spring
80: auxiliary bracket 81: second through groove
90: second elastic member
110: gas supply part 111: pressure tank
112: first piping 113: second piping
114: Third piping 114a: Outlet
115: first solenoid valve 116: second solenoid valve
117: third solenoid valve 118: connecting pipe
119: Control unit 119a: Power supply unit
120: Internal pressure sensor 121: External pressure sensor

Claims (9)

A pump body (10);
A main bracket 20 coupled to an upper portion of the pump body 10 and having a first through hole 21 formed at the center thereof; And
And a cable tube 34 surrounding the power cable 31, the signal cable 32, the air cable 33 and the periphery of the power cable 31, the air cable 33 and the signal cable 32, A cable portion (30) inserted into the pump body (10) through a first through hole (21);
, ≪ / RTI &
In the cable portion 30,
The signal cable 32, the air cable 33 and the cable tube 34 are filled in the space between the power cable 31, the signal cable 32, the air cable 33 and the cable tube 34, Further comprising a first elastic member (35) for preventing shaking between the tubes (34)
A first flange 25 is coupled to the upper portion of the main bracket 20 and an inlet of the first through hole 21 formed at the center of the first flange 25 is gradually narrowed from the upper portion to the lower portion A plurality of first coupling grooves 22 are formed along the periphery of the first through hole 21,
A second through hole 41 corresponding to the first through hole 21 is formed at the center and a plurality of second through holes 41 corresponding to the plurality of first coupling grooves 22 are formed along the circumference of the second through hole 41 A second flange 40 on which a second coupling groove 42 is formed and a second coupling groove 42 on the second flange 40 and a first coupling groove 22 on the main bracket 20, And a third through hole 61 corresponding to the first through hole 21 is formed at the center of the screw bolt 50 and is disposed between the main bracket 20 and the second flange 40 A sealing member (60) is further included,
A plurality of third coupling grooves 43 are formed on the upper surface of the second flange 40 along the outer circumference,
A clamp 71 connected to the outer periphery of the cable portion 30 that has passed through the second through hole 41 of the second flange 40 is provided on the upper portion of the second flange 40, And a fourth through hole 72a corresponding to the first through hole 21 and the second through hole 41 is formed at the center and is formed along the periphery of the fourth through hole 72a A third flange 72 formed with a plurality of fourth coupling grooves 72b corresponding to the plurality of third coupling grooves 43 and a plurality of third coupling grooves 43, A plurality of fixing shafts 73 coupled to the first flanges 72a and the second flanges 72b to fix the second flanges 40 and the third flanges 72 and both ends of the clamps 71 and the third flanges 72, And a first spring (74) through which the cable unit (30) passes. The underwater pump (100) according to claim 1, wherein the cable (30)
delete delete The method according to claim 1,
In the departure-avoiding portion 70,
And a second spring (75) coupled to both ends of the second flange (40) and the clamp (71) to allow the cable (30) to pass therethrough. Underwater pump.
The method according to claim 1,
In the clamp 71,
A plurality of first through grooves 71a corresponding to the plurality of third engaging grooves 43 are formed along the outer periphery,
The clamp (71)
And is configured to slide along a plurality of fixed shafts (73) fixed between the second flange (40) and the third flange (72).
The method according to claim 1,
An opening groove 23 is formed in the side surface of the main bracket 20 so as to open a predetermined portion along the circumference of the cable portion 30,
The main bracket 20 is formed with a fourth flange 26 having a plurality of fifth engagement grooves 24 formed on both sides of the opening groove 23,
The main bracket 20 is provided with an auxiliary bracket 80 having a plurality of second through grooves 81 corresponding to the plurality of fifth coupling grooves 24, And a plurality of screw bolts (50) coupled to the second through grooves (81) and fixing the main bracket (20) and the auxiliary bracket (80)
Characterized in that the opening groove is provided with a second elastic member (90) for increasing the fixing force between the cable portion (30), the main bracket (20) and the auxiliary bracket (80) A submersible pump provided with a release preventing bracket.
The method according to claim 1,
A pressure tank 111 in which a gas supplied from the outside is compressed and stored;
A first pipe 112 having one end connected to the air cable 33;
A second pipe 113 whose one end is connected to the pressure tank 111;
A third pipe 114 having a discharge port 114a at one end thereof;
A first solenoid valve 115 having one end connected to the other end of the first pipe 112;
A second solenoid valve 116, one end of which is connected to the other end of the second pipe 113;
A third solenoid valve 117, one end of which is connected to the other end of the third pipe 114;
A connection pipe 118 connected to the other end of the first solenoid valve 115, the other end of the second solenoid valve 116, and the other end of the third solenoid valve 117 to communicate with each other; And
A control unit 119 for controlling the opening and closing of the first solenoid valve 115, the second solenoid valve 116 and the third solenoid valve 117;
And a gas supply part (110) including the gas supply part (110).
8. The method of claim 7,
The control unit 119,
The first solenoid valve 115, the second solenoid valve 116 and the third solenoid valve 117 so as to maintain a state where the pressure inside the pump main body 10 is greater than the pressure outside the pump main body 10, Wherein the cable is provided with a bracket for preventing the cable from falling off.
9. The method of claim 8,
In the control unit 119,
An internal pressure sensor 120 provided at a position adjacent to the connection pipe 118 to measure a pressure generated in the connection pipe 118 and an internal pressure sensor 120 disposed adjacent to the connection pipe 118, And an external pressure sensor 121 for measuring a pressure generated outside of the pressure sensor 118,
The control unit 119,
The control of opening and closing of the first solenoid valve 115, the second solenoid valve 116 and the third solenoid valve 117 in accordance with the pressure measured by the internal pressure sensor 120 and the external pressure sensor 121 Wherein the cable is provided with a bracket for preventing detachment of the cable.

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