KR101036437B1 - A air cooling underwater pump - Google Patents

Abstract

PURPOSE: An air cooling underwater pump is provided to improve the cooling performance of a drive unit and reduce manufacturing and construction costs by minimizing the size of an underwater pump. CONSTITUTION: An air cooling underwater pump comprises a drive unit(110), a frame, an impeller(130), a casing(135), a fan, a supply pipe(150), an exhaust pipe(160), and a protection unit. The drive unit comprises a rotator and a stator. The frame protects the drive unit. The impeller is positioned at the lower part of the frame and is coupled with the rotary shaft. The casing is coupled with the lower end of the frame and is combined with a column pipe. The fan is positioned inside the frame and is coupled with the rotary shaft to rotate with the rotary shaft. The supply pipe supplies external air to the inside of the frame. The exhaust pipe discharges air inside the frame to the outside of the frame. The protection unit senses the abnormality of the drive unit and stops the operation of the drive unit.

Description

Air cooled underwater pump {a air cooling underwater pump}

The present invention relates to a submersible pump located in the water to intake and discharge the fluid.

In general, the submersible pump is a device that is located in the water of the fluid stored in the absorption well to discharge the fluid stored in the absorption well to the outside.

The conventional submersible pump includes a drive unit including a rotor and a stator, a frame sealing the drive unit, and an impeller rotating and driven by the drive unit to suck and discharge fluid.

The submersible pump having such a configuration is installed by being inserted into the column pipe installed to discharge the fluid from the absorption well to the outside, and by supplying power to the driving unit, the driving unit rotates the impeller to suck the fluid into the lower part of the column pipe, The sucked fluid can be easily discharged to the outside through the column pipe.

However, even if the conventional submersible pump is located in the water, there is a limit that heat generated in the submersible pump cools by exchanging heat with the fluid in the water.

In addition, if the submersible pump is operated continuously for a certain period of time, according to the abnormal gas state equation "PV = nRT", when the internal temperature of the submersible pump rises, the internal pressure rises in proportion to this, and when the internal pressure rises, the temperature increases again. The rising phenomenon is recycled and the temperature continues to rise.

As a result, the rotor 10 expands, and the inflated rotor 10 rotates in contact with the stator, thereby causing a burnout accident (see FIG. 1) in which the contact surface is worn. A photograph of a burnout accident of the rotor constituting the driving part of the pump)

In addition, the conventional submersible pump has a temperature difference between the submersible pump that generates heat during operation and the external fluid of the submersible pump, and condensation may occur in the submersible pump because external air cannot be supplied into the submersible pump. There was a problem that the driving portion is corroded.

In addition, the conventional submersible pump has to be manufactured to have a high safety factor, unlike the general pump exposed to the air, so that the manufacturing cost increases and the efficiency of the submersible pump decreases due to the large size. The size of the column pipe to install the pump is also large, there was a problem that the construction cost increases.

The present invention is to solve the problems described above, the problem to be solved by the present invention is to minimize the size of the submersible pump to reduce the manufacturing cost and construction cost, due to the temperature difference condensation generated inside the submersible pump It is possible to improve the durability by preventing the phenomenon, to improve the cooling performance of the drive unit, and to provide an air-cooled submersible pump that can prevent the damage caused by the expansion of the rotor.

An air-cooled submersible pump according to an embodiment of the present invention for achieving the above object is an air-cooled submersible pump installed in a column pipe that discharges the fluid stored in the absorption well to the outside, the rotor and the rotor of which the rotating shaft is coupled A drive unit including a stator positioned at a circumference, a frame surrounding the drive unit, an impeller positioned at the bottom of the frame and coupled to the rotary shaft to rotate with the rotary shaft to generate suction force for sucking fluid, and an outer circumference of the impeller A casing coupled to the lower end of the frame and coupled to the column pipe, a blowing fan positioned inside the frame and coupled to the rotation shaft to rotate together with the rotation shaft, wherein the blow fan is a part of the frame. One end is located in the air intake part and the other end is located outside the water surface. A supply pipe for supplying air to the inside of the frame, one end of which is located in a portion of the frame where the blower fan discharges air and the other end is located outside the water surface to discharge the air inside the frame to the outside of the frame; And a protection device for detecting an abnormality of the driving unit to stop the operation of the driving unit.

Either or both of the supply pipe or the discharge pipe may include a filter for filtering foreign matter of the air supplied into the frame.

A portion of the frame in which the blower fan is installed may be provided with a windshield to prevent the air discharged by the blower fan from flowing back.

The protection device may include a sensor installed inside the frame to detect a temperature or a leak of the driving unit, a control unit controlling the driving unit based on the information of the sensor, and an alarm to warn when an abnormality of the driving unit is detected. Can be.

The inner space of any one or both of the supply pipe and the discharge pipe is provided with a diaphragm partitioning the internal space in two, and one of the spaces is inserted into the cable electrically connected to the drive unit or the protection device, the other Air can pass through the space.

The supply pipe and the discharge pipe may each include a solenoid valve for opening and closing the supply pipe and the discharge pipe, and the solenoid valve may operate when a leak is detected by the sensor to close the supply pipe and the discharge pipe.

An air-cooled submersible pump according to another embodiment of the present invention is an air-cooled submersible pump installed in a column pipe that discharges the fluid stored in the absorption well to the outside, and includes a rotor having a rotating shaft coupled thereto and a stator positioned around the rotor. A driving unit, a frame surrounding the driving unit, an impeller positioned below the frame and coupled to the rotary shaft to rotate together with the rotary shaft to generate suction force for sucking fluid, and to surround the outer periphery of the impeller. A casing coupled to a lower end of the casing and coupled to the column pipe, a protective device for stopping an operation of the driving unit by detecting an abnormality of the driving unit, and an outer portion of the protecting device or the driving unit and the absorption well located inside the frame. A plurality of wires electrically connecting the connection boxes located with each other, Is positioned between the plurality of electric wire group includes a cable including a gas circulation tube to the inlet and outlet air to the inside of the frame.

The rotary shaft may be installed in the blowing fan for circulating the air inside the frame.

The cable further includes a holder for supporting the plurality of wires and the gas circulation tube, wherein the holder has a gas circulation tube insertion hole into which the gas circulation tube is inserted, and radially of the gas circulation tube insertion hole. Fitting grooves into which the plurality of wires are fitted may be formed.

The gas circulation tube may further include a filter for filtering foreign substances of air introduced into the gas circulation tube.

The protection device may include a sensor installed inside the frame to detect a temperature or a leak of the driving unit, a control unit controlling the driving unit based on the information of the sensor, and an alarm to warn when an abnormality of the driving unit is detected. Can be.

According to the present invention, since the outside air is introduced into and discharged into the frame to improve the cooling efficiency, it is possible to reduce the manufacturing cost by minimizing the size of the submersible pump, and the efficiency of the submersible pump is increased by the optimal design. In this case, the size of the column pipe where the submersible pump is installed can be minimized, thereby reducing the construction cost of the submersible pump.

In addition, the outside air is circulated inside the submersible pump to prevent condensation, thereby improving durability of the submersible pump, and improving the cooling performance of the submersible pump to prevent the expansion of the rotor, which is caused by the expansion of the rotor. Can prevent accidental damage.

1 is a photograph of a burnout accident of a rotor constituting a driving unit of a conventional submersible pump.
Figure 2 is a side cross-sectional view showing a state in which an air-cooled submersible pump according to an embodiment of the present invention is installed in the absorption well.
Figure 3 is a side cross-sectional view showing an air-cooled submersible pump according to an embodiment of the present invention.
4 is a cross-sectional view showing a modification of the discharge pipe constituting the air-cooled submersible pump according to an embodiment of the present invention.
5 is a configuration diagram schematically showing a protection device of an air-cooled submersible pump according to an embodiment of the present invention.
6 is a side cross-sectional view showing a state in which an air-cooled submersible pump according to another embodiment of the present invention is installed in an absorption well.
Figure 7 is an enlarged side cross-sectional view of the main portion of the air-cooled submersible pump according to another embodiment of the present invention.
8 is a cross-sectional view showing a cable of an air-cooled submersible pump according to another embodiment of the present invention.
9 is a side view showing a holder constituting the cable of the air-cooled submersible pump according to another embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

As shown in Figure 2 and 3, the air-cooled submersible pump 100 according to an embodiment of the present invention may include a drive unit (110).

The driving unit 110 may receive power and generate rotational force. Meanwhile, the driving unit 110 may include a stator 115 and a rotor 113.

The stator 115 may be formed in a ring shape, and a coil may be wound to generate magnetic force with an external power source. The stator 115 may be fixed to an inner circumferential surface of the frame 120 to be described below.

The rotor 113 rotates by the magnetic force generated by the stator 115, and is formed in a drum shape, and a rotation shaft 111 is provided at the center thereof and inserted into the inner circumference of the stator 115.

The driving unit 110 configured as described above may rotate the rotating shaft 111 in a form in which the rotor 113 rotates by an induced current when a magnetic force is generated in the stator 115 by receiving external electricity.

Here, since the driving unit 110 may be implemented by a known motor, a detailed description thereof will be omitted, and the configuration of the driving unit 110 may be variously configured by a known motor having various forms.

The air-cooled submersible pump 100 according to an embodiment of the present invention includes a frame 120. The frame 120 protects the driving unit 110 and seals the driving unit 110 in a state where only one end of the rotating shaft 111 protrudes to prevent the fluid from flowing into the driving unit 110.

In addition, a bearing 117 may be installed at a portion of the frame 120 through which the rotating shaft 111 penetrates the frame 120 to reduce friction between the rotating shaft 111 and the frame 120.

The frame 120 may cool the stator 115 positioned inside the frame 120 by directly contacting and exchanging heat with the fluid discharged through the column pipe 210.

Air-cooled submersible pump 100 according to an embodiment of the present invention may include an impeller (130). The impeller 130 may suck and discharge the fluid, and is coupled to the rotating shaft 111 protruding to the outside of the frame 120 to the rotational force of the driving unit 110, more specifically, the rotational force of the rotor 113. It can rotate by. On the other hand, the impeller 130 in the present invention is not limited to the structure and shape of the impeller 130, because the known impeller 130 of various forms can be used.

The empty rack submersible pump 100 according to an embodiment of the present invention may include a casing 135. The casing 135 is coupled to the lower end of the frame 120, is formed in a form surrounding the outer periphery of the impeller 130 to suck the fluid to the lower end of the impeller 130, the upper portion of the impeller 130 As a result, the sucked fluid can be discharged.

On the other hand, the inner circumferential surface of the casing 135 is formed in such a way that the central portion protrudes inward so as to be spaced apart from the outer circumference of the impeller 130 by a minimum distance to increase the suction force of the impeller 130 and at the same time of the fluid sucked and discharged The flow can be smooth.

The outer surface of the casing 135 may be coupled to the inner circumferential surface of the column pipe 210 to support the submersible pump 100 inside the column pipe 210.

Air-cooled submersible pump 100 according to an embodiment of the present invention may include a blowing fan 140. The blowing fan 140 may supply and discharge the air inside the frame 120. On the other hand, the blowing fan 140 may be coupled to the rotating shaft 111 located inside the frame 120 to rotate together when the rotor 113 is rotated.

At this time, the blowing fan 140 is coupled to the upper portion of the driving unit 110, that is, the rotor 113 and the stator 115 of the portion of the rotary shaft 111 is located below the blowing fan 140 The heated air may be sucked from the driving unit 110 and discharged to the upper portion of the blowing fan 140.

On the other hand, the blowing fan 140 may be formed in a shape in which a plurality of blades are disposed radially, such as the blade of the fan, for example, it may be configured such that the rotary shaft 111 is coupled to the center thereof.

In addition, a windbreak plate 143 may be installed at a portion where the blowing fan 140 of the frame 120 is installed. The windbreak plate 143 may partition the inflow and outflow portions of the air in the frame 120 to prevent the air discharged by the blower fan 140 from flowing back into the blower fan 140.

Meanwhile, the blower fan 140 may be installed at the lower portion of the frame 120, and an air inlet 143a may be formed in the middle of the blower plate 143 to introduce air into the blower fan 140.

Air-cooled submersible pump 100 according to an embodiment of the present invention may include a supply pipe (150). The supply pipe 150 may supply external air into the frame 120.

Meanwhile, one end of the supply pipe 150 is connected to communicate with the frame 120, and one end of the supply pipe 150 is a part of the frame 120 to which air is supplied by the blower fan 140 of the part of the frame 120. Can be connected to. In addition, the other end of the supply pipe 150 may be located outside the absorption well 200, that is, outside the water surface to supply external air to the inside of the frame 120.

Air-cooled submersible pump 100 according to an embodiment of the present invention may include a discharge pipe (160). The discharge pipe 160 may discharge the internal air of the frame 120 to the outside of the frame 120.

On the other hand, one end of the discharge pipe 160 is connected to communicate with the frame 120, one end of the discharge pipe 160 is a portion where the air is discharged by the blowing fan 140 of the portion of the frame 120 more specifically blowing The air discharged by the fan 140 may be connected to the upper portion of the frame 120 to be discharged after the heat exchanged with the driving unit 110 through the driving unit 110.

In addition, the filter 190 may be installed in any one or both of the supply pipe 150 and the discharge pipe 160. The filter 190 may filter foreign matter and fluid contained in the air to prevent foreign matter and fluid from flowing into the frame 120.

At this time, the filter 190 may be configured to include a function of the silencer to prevent the noise generated when the air is introduced or discharged through the supply pipe 150 and the discharge pipe 160, of course.

Here, as shown in FIG. 4, any one or both of the supply pipe 150 and the discharge pipe 160 are provided with partitions 161 partitioning the inner space of the discharge pipe 160 or the supply pipe 150 into two. One of the two spaces is inserted into the cable 180 including a wire for supplying power to the drive unit 110 or electrically connecting the protection device 170 to be described below, the other space is external It may be configured to pass the air discharged or introduced into the.

As shown in FIG. 5, the air-cooled submersible pump 100 according to an embodiment of the present invention may include a protection device 170. The protection device 170 may stop the operation of the air-cooled submersible pump 100 by more specifically detecting the temperature of the driving unit 110 and the leakage of the frame 120.

Meanwhile, the protection device 170 includes a sensor 173, a controller 175, and an alarm 171, and the sensor 173 detects an abnormality of the air-cooled submersible pump 100 to control the detected information. The controller 175 determines that the controller 175 stops the operation of the driver 110 based on this information and operates the alarm 171.

Here, the sensor 170 is a bearing 117 to sense the temperature of the stator temperature sensor 173a installed in the stator 115 to detect the temperature of the stator 115 and the bearing 117 supporting the rotating shaft 111. ) Is a bearing temperature sensor (173b) installed in the portion of the frame 120 is installed, and any of the leak detection sensor (173c) for detecting a leak to the interior of the frame 120 is located inside the frame 120 It may comprise one or more.

On the other hand, although not shown in the drawing, the stator temperature sensor 173a may be configured to include a coil temperature sensor for measuring the temperature of the coil of the stator 115 and a winding temperature sensor for measuring the temperature of the portion of the coil winding. .

The protection device 170 may further include a solenoid valve 177. The solenoid valve 177 may open and close the supply pipe 150 and the discharge pipe 160, and the solenoid valve 177 may be provided at a portion where the supply pipe 150 and the discharge pipe 160 are connected to the frame 120, respectively. When the fluid is introduced into the supply pipe 150 or the discharge pipe 160, the supply pipe 150 and the discharge pipe 160 may be blocked.

On the other hand, the solenoid valve 177 may be configured to close the supply pipe 150 and the discharge pipe 160 when the leak detection sensor 173c detects a leak inside the frame 120.

In addition, the alarm 171 may be a lamp that visually warns or a speaker that warns sound, and of course, the alarm 171 may be configured to warn both.

The protection device 170 configured as described above controls the controller 175 based on this information when a temperature higher than a temperature arbitrarily set by the stator temperature sensor 173a or the bearing temperature sensor 173b is detected or a leak is detected by the leak detection sensor 173c. Can cut off the power of the drive unit or operate the solenoid valve 177 at the same time operating the alarm 171 can protect the air-cooled submersible pump (100).

The operation and effects between the components described above will be described.

Air-cooled submersible pump 100 according to an embodiment of the present invention is located inside the frame 120 in a state coupled to the blowing fan 140 on the rotating shaft 111 of the drive unit 110, the frame 120 is Sealing the driving unit 110 and the blowing fan 140, the impeller 130 is coupled to the outside of the frame 120, that is, the end of the rotary shaft 111.

And, one end of the supply pipe 150 is located in the frame 120, the blowing fan 140 intakes the air, the other end of the supply pipe 150 is located outside the water surface to the outside air to the blowing fan 140 Supply.

In addition, one end of the discharge pipe 160 is located in a portion in which the blower fan 140 discharges air from the frame 120, the other end of the supply pipe 150 is located outside the water surface to the outside air of the frame 120 to the outside Discharge.

And the lower part of the blower fan 140 is provided with a windshield 143 to prevent the air discharged by the blower fan 140 from being supplied back to the blower fan 140 inside the frame 120.

In addition, the stator 115 constituting the drive unit 110 is provided with a stator temperature sensor 173a and a bearing temperature sensor 173b at a portion of the frame 120 in which a bearing 119 supporting the rotating shaft 111 is installed. ) May be installed, and more specifically, a leak detection sensor 173c may be installed at a lower portion or an upper portion of the frame 120.

The air-cooled submersible pump 100 according to the exemplary embodiment of the present invention configured as described above is installed in the column pipe 210 for discharging the fluid stored in the absorption well 200 to the outside so that the impeller 130 is rotated when the rotary shaft 111 is rotated. By rotating the fluid stored in the absorption well 200 is discharged to the outside through the column pipe 210.

At this time, as the rotating shaft 111 rotates, the blowing fan 140 positioned inside the frame 120 also rotates, and external air is supplied to the frame 120 through the supply pipe 150 by the rotational force of the blowing fan 140. ) Is supplied to the inside, and the air supplied from the outside is heat-exchanged with the driving unit 110 to cool the driving unit 110 and then is discharged to the outside through the discharge pipe 160.

On the other hand, when a temperature of a predetermined temperature or more is detected by the stator temperature sensor 173a and the bearing temperature sensor 173b while the driving unit 110 is operating, the controller 175 determines that the alarm unit 171 operates and at the same time the driving unit ( It is possible to prevent the breakage of the air-cooled submersible pump 100 by cutting off the power supply 110.

In addition, when the leak detection sensor detects a leak inside the frame, the control unit warns through the alarm and at the same time operate the solenoid valve 177 to block the supply pipe and the discharge pipe can protect the air-cooled submersible pump.

Therefore, the air-cooled submersible pump 100 according to an embodiment of the present invention supplies external air to the inside of the frame 120 and discharges it to the outside of the frame 120, thereby increasing the internal pressure of the frame 120. The temperature rise of the driving unit 110 may be prevented, and the cooling efficiency may be improved by cooling the driving unit 110 by the fluid contacting the air and the frame 120.

In addition, due to the increase in temperature, the rotor 113 may expand to prevent burnout accidents caused by contacting the stator 115.

In addition, since it can be manufactured in a smaller size than the conventional hermetic submersible pump, not only can the manufacturing cost be lowered, but also the diameter of the column pipe 210 into which the submersible pump is inserted can be made small, so that the construction of the air-cooled submersible pump 100 can be achieved. You can save money.

In addition, the efficiency of the submersible pump 110 can be improved by the optimal design of the driving unit 110.

In addition, it is possible to prevent condensation due to the temperature difference between the driving unit 110 and the fluid inside the frame 120, and by preventing the damage of the rotor that can be generated by touching the stator to expand the rotor, air-cooled underwater Durability of the pump 100 can be increased.

In addition, the protection device 170 is installed to detect the abnormality of the air-cooled submersible pump 100, it is possible to prevent the damage of the air-cooled submersible pump (100).

Hereinafter will be described an air-cooled submersible pump according to another embodiment of the present invention. In the air-cooled submersible pump according to another embodiment of the present invention, the same configuration as in one embodiment is changed by the same reference numerals and detailed description of the same configuration is omitted.

6 and 7, the air-cooled submersible pump according to another embodiment of the present invention is characterized in that the cable 180, the air-cooled submersible pump according to another embodiment of the present invention the supply pipe in one embodiment Instead of installing the 150 and the discharge pipe 160, the outside air may be introduced into and out of the frame 120 through the cable 80. At this time, in the case of the air-cooled submersible pump 100 having a small discharge capacity may be configured to exclude the blowing fan 140.

On the other hand, the cable 180 is to electrically connect the drive unit 110 or the protection device 170 and the connection box 195, one end of the cable 180 is coupled to the frame 120, the cable cable 180 The other end of) may be connected to a connection box 195 that is located outside the absorption tablet 200 to supply power. Here, the connection box 195 may be provided with a control unit 175 and an alarm 171 constituting a terminal for supplying power to the driving unit 110 and the protection device 170.

Here, the cable 180 is a power cable for supplying electricity to the drive unit 110 or a control cable for electrically connecting the sensor 173 of the protection device 170 with the connection box 195, or a power cable and a control cable It is preferable that the mixed cable is a mixed type, but it can be applied to all cables electrically connecting the submersible pump 100 and the land.

8 is a cable 180 according to another embodiment is composed of a plurality of wires 181 for supplying power to the driving unit or transferring information of the sensor 173 of the protection device 170 to the control unit 175, The wire 181 may be configured in a form surrounded by the outer shell 185.

In addition, a gas circulation tube 183 may be provided at the center of the cable 180. Through the gas circulation tube 183, the outside air may be introduced into the sealed frame 120 or the inside air of the frame may be discharged to the outside.

On the other hand, one end of the gas circulation tube 183 is coupled to communicate with the inside of the frame 120 to the upper end of the frame 120, the other end of the gas circulation tube 183 is located outside the connection box 195 It can be coupled to the connection box 195 in the form, the other end of the gas circulation pipe 183 can be installed filter 190 to remove the foreign matter and at the same time reduce the noise generated when the air is introduced and discharged. to be.

In addition, the gas circulation tube 183 may be located in a space surrounded by the plurality of wires 181 constituting the cable 180, that is, the plurality of wires 181.

In addition, the cable 180 may include a holder 187. A plurality of holders 187 are installed in the longitudinal direction of the cable 180 to support the plurality of electric wires 181 and the gas circulation tube 183 wrapped in the outer shell 185 in the outer shell 185. .

As shown in FIG. 9, the holder 187 has a disc shape, and a gas circulation tube insertion hole 187a into which a gas circulation tube 183 is inserted is formed at the center thereof, and a radial circumference of the gas circulation tube insertion hole 187a is formed. The furnace may be configured in a form in which a plurality of fitting grooves 187b into which the plurality of wires 181 are fitted are formed.

Therefore, by installing the holder 187 in the cable 180, the plurality of electric wires 181 located inside the cable 180 by the fluid discharged from the air-cooled submersible pump 100 is prevented from shaking and the electric wire ( It is possible to prevent breakage of the 181 and the inflow of fluid between the wire 181 and the outer shell 185.

The air-cooled submersible pump according to another embodiment configured as described above introduces outside air into the closed frame 120 through the gas circulation pipe 183 provided in the cable 180 and the inside of the frame 120. Air can flow out. At this time, the air is introduced and discharged through the gas circulation pipe 183 by the temperature and pressure inside the frame 120 and the temperature and pressure outside the absorption well 200.

Therefore, the air-cooled submersible pump 100 according to another embodiment of the present invention is introduced by the outside air into the frame 120 and out of the frame 120, due to the increase in the internal pressure of the frame 120 The temperature rise of the driving unit 110 may be prevented, and the cooling efficiency may be improved by cooling the driving unit 110 by the fluid contacting the air and the frame 120.

In addition, due to the increase in temperature, the rotor 113 may expand to prevent burnout accidents caused by contacting the stator 115.

In addition, since it can be manufactured in a smaller size than the conventional hermetic submersible pump, not only can the manufacturing cost be lowered, but also the diameter of the column pipe 210 into which the submersible pump is inserted can be made small, so that the construction of the air-cooled submersible pump 100 can be achieved. You can save money.

In addition, the efficiency of the submersible pump 110 can be improved by the optimal design of the driving unit 110.

In addition, it is possible to prevent condensation due to the temperature difference between the driving unit 110 and the fluid inside the frame 120, and by preventing the damage of the rotor that can be generated by touching the stator to expand the rotor, air-cooled underwater Durability of the pump 100 can be increased.

In addition, the protection device is installed can detect the abnormality of the air-cooled submersible pump 100, it is possible to prevent the breakage of the air-cooled submersible pump (100).

Although the embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and it is recognized that the present invention is easily changed and equivalent by those skilled in the art to which the present invention pertains. Includes all changes and modifications to the scope of the matter.

100: air-cooled submersible pump 110: drive unit
111: axis of rotation 113: rotor
115: stator 117: bearing
120: frame 130: impeller
135: casing 140: blowing fan
143: Windshield 143a: air inlet
150: supply pipe 160: discharge pipe
161: plate 170: protective device
171: alarm 173: sensor
173a: Stator temperature sensor 173b: Bearing temperature sensor
173c: leak detection sensor 175: control unit
177: solenoid valve 180: cable
181: electric wire 183: gas circulation tube
185: jacket 187: holder
187a: gas circulation tube insertion groove 187b: insertion groove
190: filter 195: connection box
200: absorption tablet 210: column pipe

Claims (11)

An air-cooled submersible pump installed in a column pipe that discharges the fluid stored in the absorption well to the outside,
A drive unit including a rotor coupled to a rotating shaft and a stator positioned around the rotor;
A frame surrounding the driving unit,
An impeller positioned in the lower portion of the frame and coupled to the rotary shaft to rotate with the rotary shaft to generate suction force for sucking fluid;
Casing is formed in the form surrounding the outer periphery of the impeller coupled to the bottom of the frame and coupled to the column pipe,
A blowing fan positioned inside the frame and coupled to the rotating shaft to rotate together with the rotating shaft;
A supply pipe for supplying external air to the inside of the frame, one end of which is located at a portion of the frame where the blowing fan sucks air and the other end is located outside the water surface;
An exhaust pipe for discharging air from the inside of the frame to an outside of the frame, one end of which is located at a portion of the frame to which the blower fan discharges air and the other end is located outside the water surface;
An air-cooled submersible pump comprising a protection device for detecting the abnormality of the drive unit to stop the operation of the drive unit. The method of claim 1,
Either or both of the supply pipe or the discharge pipe
An air-cooled submersible pump comprising a filter for filtering foreign substances of air supplied into the frame. The method of claim 1,
An air-cooled submersible pump is provided in the frame where the blowing fan is installed, a windshield is provided to prevent backflow of the air discharged by the blowing fan. The method of claim 1,
The protective device
A sensor installed inside the frame to detect a temperature or a leak of the driving unit;
A control unit controlling the driving unit based on the information of the sensor;
An air-cooled submersible pump comprising an alarm for warning when an abnormality of the driving unit is detected. The method of claim 1,
The internal space of any one or both of the supply pipe and the discharge pipe
The diaphragm is divided into two internal spaces, and a cable electrically connected to the driving unit or the protection device is inserted into one of the spaces, and air passes through the other space. The method of claim 2,
The supply pipe and the discharge pipe
It includes a solenoid valve for opening and closing the supply pipe and the discharge pipe, respectively,
The solenoid valve is air-cooled submersible pump, characterized in that when the leak is detected by the sensor to close the supply pipe and the discharge pipe. An air-cooled submersible pump installed in a column pipe that discharges the fluid stored in the absorption well to the outside,
A drive unit including a rotor coupled to a rotating shaft and a stator positioned around the rotor;
A frame surrounding the driving unit,
An impeller positioned in the lower portion of the frame and coupled to the rotary shaft to rotate with the rotary shaft to generate suction force for sucking fluid;
Casing is formed in the form surrounding the outer periphery of the impeller coupled to the bottom of the frame and coupled to the column pipe,
A protective device for stopping an operation of the driving unit by detecting an abnormality of the driving unit;
A plurality of wires electrically connecting the protection device or the driving unit located inside the frame and a connection box located outside of the absorption well and the plurality of wires to introduce air into the frame; And a cable comprising a gas circulation pipe to outflow. The method of claim 7, wherein
The rotation axis
An air-cooled submersible pump, characterized in that the blowing fan is located inside the frame to circulate the air inside the frame. The method of claim 7, wherein
The cable is
Further comprising a holder for supporting the plurality of wires and the gas circulation pipe,
The holder is an air-cooled submersible pump, characterized in that the gas circulation tube insertion hole is formed in the center is inserted, the insertion groove for fitting the plurality of wires radially of the gas circulation tube insertion hole is formed. The method of claim 7, wherein
The gas circulation tube is
An air-cooled submersible pump, characterized in that it further comprises a filter for filtering foreign substances of air introduced into the gas circulation pipe. The method of claim 7, wherein
The protective device
A sensor installed inside the frame to detect a temperature or a leak of the driving unit;
A control unit controlling the driving unit based on the information of the sensor;
An air-cooled submersible pump comprising an alarm for warning when an abnormality of the driving unit is detected.

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