JP5243751B2 - Vertical shaft pump and pump inspection method - Google Patents

Description

The present invention relates to a vertical-shaft pump及beauty pump inspection method for pumping a liquid such as river water and wastewater.

  Generally, the vertical shaft pump is installed on the pump installation floor at the upper part of the water tank, and the impeller casing that houses the impeller is suspended via the suspension pipe. Such a vertical shaft pump is operated in a state in which a casing, an impeller, and a submerged bearing are submerged in water, and these members gradually corrode and wear as the operation time elapses. For this reason, it is necessary to periodically check the vertical shaft pump to check the impeller and submerged bearings for wear and the corrosion of the casing, and to repair or replace them as necessary.

  However, in order to confirm the degree of wear of the parts, it is necessary to dismantle the vertical shaft pump and pull up the vertical pump with a crane or the like, which requires high work costs and long work. Therefore, a method has been proposed in which the consumption status of each member inside the pump is visually confirmed from the outside of the pump by using an image acquisition means such as an underwater camera or a fiberscope. For example, Patent Document 1 discloses a configuration in which an image acquisition unit such as a fiberscope is guided to the inside of a pump through a conduit, and the degree of wear of parts is confirmed through the image acquisition unit.

JP 2006-161790 A

  However, when the liquid handled by the pump is a liquid with low transparency such as sewage, it is difficult to visually check the wear state of components such as the impeller and the underwater bearing submerged in the liquid by the image acquisition means. Furthermore, when the above-described conduit is blocked by earth or sand, the image acquisition means cannot be guided to the inside of the pump.

The present invention has been made in view of such a conventional problem, and an operator can easily visually check the wear state of components arranged inside the pump without being affected by the liquid quality using an image acquisition means. and to provide a vertical-shaft pump及beauty pump inspection method capable of.

In order to achieve the above-described object, one embodiment of the present invention includes an impeller fixed to a rotating shaft, a bearing that rotatably supports the rotating shaft, a pump casing that houses the impeller, and image acquisition. Means, a conduit for guiding the image acquisition means from the outside of the pump casing to a predetermined inspection location inside the pump casing, a liquid introduction pipe for guiding a transparent liquid to the predetermined inspection location, and an inner peripheral surface of the conduit A guide member having a shape that fits loosely and does not close the conduit, and a wire attached to the guide member and assisting movement of the guide member in the conduit, the guide member comprising: A vertical shaft pump attached to the image acquisition means .

In a preferred aspect of the present invention, the image acquisition means is a fiberscope, an underwater camera, or an endoscope.
A preferred embodiment of the present invention, the conduit has a liquid supply port for the clear liquid is supplied also function as the liquid introduction tube, the tip of the conduit, the pumped fluid inside the pump casing A check valve for restricting the flow into the conduit is provided.
In a preferred aspect of the present invention, the liquid introduction pipe is disposed inside the conduit.
In a preferred aspect of the present invention, the guide member is attached to the image acquisition unit and the liquid introduction tube.

Another aspect of the present invention is the above-described vertical shaft pump inspection method, wherein the image acquisition unit is guided to a predetermined inspection location using the guide member and the wire provided in the conduit to acquire an image. This is a pump inspection method characterized by the following.
In a preferred aspect of the present invention, the liquid introduction tube is attached to the guide member, and the liquid acquisition tube is guided to the predetermined inspection location together with the image acquisition unit to acquire an image.
In a preferred aspect of the present invention, a light source for adjusting the amount of light at the time of image acquisition is attached to the guide member, and the image is acquired by guiding the light source together with the image acquisition means to the predetermined inspection location. To do.
In a preferred aspect of the present invention, the liquid guide tube and a light source for adjusting the amount of light at the time of image acquisition are attached to the guide member. To obtain an image.

One reference example of the present invention includes a vertical shaft pump installed in a suction water tank, a damming mechanism for preventing liquid from flowing into the suction water tank, and a drainage means for discharging liquid from the suction water tank, The vertical pump includes an impeller fixed to a rotating shaft, a bearing that rotatably supports the rotating shaft, a pump casing that houses the impeller, and an image acquisition unit that is disposed outside the pump casing inside the pump casing. A pump system having a conduit for guiding to a predetermined inspection point.
Another reference example of the present invention is the above-described vertical pump inspection method, in which the liquid surface position in the suction water tank is lowered from the predetermined inspection location, and then the predetermined acquisition location is determined by the image acquisition means. A pump inspection method characterized by acquiring an image.
Another reference example of the present invention is a vertical shaft pump having an impeller and a pump casing, a suction pipe communicating the vertical shaft pump and a suction water tank, a valve mechanism installed in the suction pipe, and liquid from the pump casing. The vertical shaft pump has a guide passage for guiding the image acquisition means from the outside of the pump casing to a predetermined inspection location inside the pump casing.
Another reference example of the present invention is the above-described vertical shaft pump inspection method, wherein the liquid in the pump casing is discharged and an image of a predetermined inspection point is acquired by the image acquisition unit. This is an inspection method.

  According to the present invention described above, the wear state of the parts inside the pump and the state of any inspection location can be visually observed using an image acquisition means such as an underwater camera or a fiberscope without being affected by a liquid with low transparency. Is possible.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing the overall configuration of a vertical shaft pump according to a first embodiment of the present invention.
As shown in FIG. 1, the vertical pump is connected to an impeller casing 1 having a suction bell mouth 1a and a pump bowl 1b, a suspension pipe 3 for suspending the impeller casing 1 in a water tank, and an upper end of the suspension pipe 3. A discharge bend tube 4, an impeller 10 accommodated in the impeller casing 1, and a rotating shaft 6 to which the impeller 10 is fixed. The suspension pipe 3 extends downward through a pump insertion hole 24 formed in the pump installation floor 22 above the water tank, and is fixed to the pump installation floor 22 via an installation base 23 provided at the upper end of the suspension pipe 3. The The rotating shaft (vertical shaft) 6 extends in the vertical direction through the discharge curved pipe 4, the suspension pipe 3, and the impeller casing 1. The impeller casing 1 and the suspension pipe 3 constitute a pump casing 2.

  The suction bell mouth 1a opens downward, and the upper end of the suction bell mouth 1a is fixed to the lower end of the pump bowl 1b. The impeller 10 is fixed to the lower end of the rotating shaft 6, and the impeller 10 and the rotating shaft 6 rotate integrally. A plurality of guide vanes 14 are arranged above the impeller 10 (discharge side). These guide vanes 14 are fixed to the inner peripheral surface of the pump bowl 1b. The rotary shaft 6 is rotatably supported by the outer bearing 11 and the underwater bearings 12 and 15. The underwater bearing 12 is accommodated in the pump bowl 1 b and the underwater bearing 15 is accommodated in the suspension pipe 3. The support member 7 that supports the underwater bearing 12 is fixed to the inner surface of the bowl bush 13, and the bowl bush 13 is supported by the impeller casing 1 via a guide vane 14. The support member 17 that supports the underwater bearing 15 is fixed to the inner peripheral surface of the suspension pipe 3. The underwater bearings 12 and 15 are so-called sliding bearings that are in sliding contact with the rotary shaft 6. Reference numeral 19 denotes a handhole.

  The rotary shaft 6 protrudes upward from the discharge curved pipe 4 and is connected to a drive source 18. When the impeller 10 is rotated by the drive source 18 via the rotary shaft 6, water (handling liquid) in the water tank is sucked from the suction bell mouth 1 a and passes through the pump bowl 1 b, the suspension pipe 3 and the discharge bent pipe 4. To the discharge pipe (not shown). During the vertical pump operation, the impeller casing 1 that houses the impeller 10 and the underwater bearing 12 is located below the liquid level.

  A conduit 25 for guiding a fiberscope (image acquisition means) 27 to the inside of the impeller casing 1 is provided on the side of the discharge curved pipe 4, the suspension pipe 3, and the impeller casing 1. In the present embodiment, an example in which a fiberscope is used as the image acquisition unit will be described. However, the image acquisition unit is not limited to the fiberscope, and an apparatus having an equivalent function such as an underwater camera may be used. The conduit 25 communicates with the inside of the pump in the vicinity of a predetermined consumable part (inspection point). For example, one end (tip) of the conduit 25 is located between the impeller 10 and the guide vane 14, and the other end (insertion port) 25 a is located above the pump installation floor 22. Yes. The conduit 25 has a liquid supply port 25b. The liquid supply port 25b supplies a liquid supply source for supplying a liquid having a degree of transparency that does not interfere with imaging by a fiberscope or an underwater camera into the impeller casing 1. 30 are connected. For example, the liquid supply source 30 stores a transparent liquid such as fresh water, warm water (water having a higher temperature than the handling liquid), alcohol, and the like. Alternatively, the liquid supply source 30 has a connection port for connecting a separate storage facility. When inspecting the wear state of components such as the impeller 10 and the guide vane 14, a transparent liquid is injected (introduced) into the impeller casing 1 from the liquid supply source 30 through the conduit 25. Thus, in the present embodiment, the conduit 25 also functions as a liquid introduction tube.

  2 (a) is an enlarged side view showing the tip of the fiberscope inserted into the conduit shown in FIG. 1, and FIG. 2 (b) is a view seen from the direction of arrow II shown in FIG. 2 (a). . As shown in FIGS. 2A and 2B, a guide member 31 that is gently fitted to the inner peripheral surface of the conduit 25 is attached to a portion near the tip of the fiberscope 27. A wire 32 is attached to the member 31 as a bar wire that assists the movement of the guide member 31 in the conduit 25. By drawing this wire 32 into the conduit 25, the tip of the fiberscope 27 is moved to the inside of the impeller casing 1, and an image of a predetermined inspection location is acquired. Thereafter, by pulling out the wire 32, the fiberscope 27 can be taken out without being pulled, and an excessive force is not applied to the fiberscope 27, so that a failure of the device can be prevented. Even when an underwater camera is used in place of the fiberscope, the wire 32 can be taken out without applying an excessive force to the underwater camera or wiring.

  The inner diameter of the conduit 25 is set to be somewhat larger than the diameter of the fiberscope 27 so as not to hinder the movement of the fiberscope 27. When examining the degree of wear of parts (hereinafter simply referred to as inspection), liquid is injected from the liquid supply source 30 into the impeller casing 1 through a conduit (liquid introduction pipe) 25. A sealing member (not shown) for preventing the liquid from flowing out while allowing the movement of the fiberscope 27 is attached to the insertion opening 25a. In addition, as shown in FIG.2 (b), the guide member 31 has a shape which does not obstruct | occlude the conduit | pipe 25 so that the distribution | circulation of a liquid may not be prevented.

  Fig.3 (a) is an enlarged view of the edge part of the conduit | pipe shown in FIG. 1, and shows the state at the time of pump operation. FIG.3 (b) is an enlarged view of the edge part of the conduit | pipe shown in FIG. 1, and shows the state at the time of inspection. As shown in FIGS. 3A and 3B, a check valve 28 is provided as a backflow prevention mechanism at the tip (opening) of the conduit 25. This check valve 28 allows only the flow of liquid from the conduit 25 into the pump casing 2 (impeller casing 1).

  As shown in FIG. 3A, the check valve 28 is closed during the pump operation, and the handling liquid (for example, sewage) in the pump casing 2 (impeller casing 1) is restricted from flowing into the conduit 25. Therefore, blockage of the conduit 25 due to earth and sand or dust contained in the sewage is prevented. On the other hand, as shown in FIG. 3B, at the time of inspection, the check valve 28 is opened by the transparent liquid supplied from the liquid supply source 30 and / or the fiber scope 27, and the tip of the fiber scope 27 is the impeller casing. Located inside.

  The work for examining the degree of wear of the components in the impeller casing 1 using the fiberscope 27 is performed as follows. During the inspection work, the rotation of the impeller 10 is stopped. A transparent liquid is injected into the impeller casing 1 through the conduit 25, and the fiberscope 27 is inserted into the conduit 25 through the insertion port 25a. The transparent liquid discharged from the distal end of the conduit 25 functioning as a liquid introduction pipe eliminates sewage and dust around the distal end portion of the fiberscope 27, thereby increasing the transparency of the liquid inside the impeller casing 1. In this state, the fiber scope 27 is used to visually check the state of wear of parts such as the impeller 10. The same operation is performed when an underwater camera is used as the image acquisition means.

  When warm water is used as the transparent liquid introduced into the conduit (liquid introduction pipe) 25, the sewage moves downward and the warm water moves upward due to the temperature difference. By such movement of the liquid, the sewage and the transparent liquid are replaced, and the transparency of the liquid existing around the part to be inspected can be increased. Note that the installation positions of the conduit 25 and the liquid introduction pipe are not limited to between the impeller 10 and the guide vane 14 and are appropriately determined according to the parts to be inspected. For example, when the underwater bearings 12 and 15 are inspection targets, the underwater bearings 12 and 15 are installed so that the tips of the conduit 25 and the liquid introduction pipe are positioned in the vicinity of the underwater bearings 12 and 15. Moreover, you may provide a conduit | pipe and a liquid inlet tube in multiple places.

  FIG. 4 is a view showing a vertical shaft pump according to a second embodiment of the present invention, and FIG. 5 is an enlarged view showing the ends of the conduit and the liquid introduction pipe shown in FIG. Note that the configuration and operation of the present embodiment that are not specifically described are the same as those of the first embodiment, and thus redundant description thereof is omitted.

  In this embodiment, the conduit 25 and the liquid introduction pipe 29 are provided separately. That is, as shown in FIG. 4, a conduit 25 for guiding the fiberscope 27 to the inside of the impeller casing 1 and a transparent liquid are provided on the side of the discharge curved pipe 4, the suspension pipe 3, and the impeller casing 1. And a liquid introduction pipe 29 for injecting (introducing) the liquid into the impeller casing 1. The conduit 25 and the liquid introduction pipe 29 are disposed adjacent to each other, and both communicate with the interior of the impeller casing 1. One end (tip) of the conduit 25 and the liquid introduction pipe 29 is located in the vicinity of the impeller 10, and the other end (insertion port 25 a and liquid introduction port 29 a) is located above the pump installation floor 22. positioned. A liquid supply source 30 is connected to the liquid inlet 29a.

  As shown in FIG. 5, the distal ends of the conduit 25 and the liquid introduction tube 29 are disposed adjacent to each other, and the distal end of the conduit 25 is located above the distal end of the liquid introduction tube 29. Also in the present embodiment, a transparent liquid can be supplied into the impeller casing 1 through the liquid introduction pipe 29, whereby the transparency of the liquid around the parts to be inspected (such as the impeller 10 and the guide vane 14) can be increased. Can be raised. In the present embodiment, the positions of the leading ends of the conduit 25 and the liquid introduction pipe 29 are not limited to between the impeller 10 and the guide vane 14 and can be changed as necessary.

  FIG. 6 (a) is a side view showing the tip of the conduit and the liquid introduction tube in the third embodiment of the present invention, and FIG. 6 (b) is a view from the direction indicated by the arrow VI in FIG. 6 (a). is there. Note that the configuration and operation of the present embodiment that are not specifically described are the same as those of the second embodiment described above, and thus redundant description thereof is omitted.

  As shown in FIGS. 6A and 6B, in this embodiment, a liquid introduction tube 35 is used as the liquid introduction tube. The liquid introduction tube 35 is disposed inside the conduit 25. The fiberscope 27 and the liquid introduction tube 35 are arranged substantially in parallel, and a guide member 31 for guiding the movement of the fiberscope 27 and the liquid introduction tube 35 in the conduit 25 is attached in the vicinity of the distal end thereof. A wire 32 is connected to the guide member 31 as in the second embodiment. Note that the liquid introduction tube 35 is configured to bend flexibly to such an extent that the movement of the liquid introduction tube 35 in the conduit 25 is not hindered.

  According to the present embodiment configured as described above, even when a part of the conduit 25 is blocked by silt or the like, the transparent liquid is directly applied to the closed portion from the liquid introduction tube 35 and the local cleaning is performed. Thus, the blockage of the conduit 25 can be resolved. In this case, it is preferable to use a slightly high-pressure liquid as the transparent liquid. Further, according to the configuration of the present embodiment, even in a pump having a plurality of conduits 25, it is not necessary to provide a plurality of liquid supply sources 30, and it is not necessary to use a special seal structure for the insertion port 25a. Can be simplified. Further, instead of or in addition to the liquid introduction tube 35, the light quantity necessary for image acquisition may be adjusted by attaching a light source such as an LED to the guide member 31. For example, as shown in FIG. 6C, three of a fiberscope 27, a liquid introduction tube 35, and a light source 36 may be attached to the guide member 31.

Fig.7 (a) is a schematic diagram which shows the pump system which concerns on the 1st reference example of this invention, FIG.7 (b) is a schematic diagram which shows the mode at the time of an inspection.
As shown in FIG. 7A, a vertical shaft pump 40 is installed in the suction water tank 41. The basic configuration of the vertical shaft pump 40 is the same as the configuration shown in FIG. Also in this reference example , the conduit 25 is installed along the vertical shaft pump 40.

  In the suction water tank 41, a damming mechanism 42 is provided to dam the handling liquid flowing into the vertical shaft pump 40. This damming mechanism 42 is located upstream of the vertical shaft pump 40. In addition, an underwater pump 43 serving as a draining means for draining water is installed at the bottom of the suction water tank 41 between the damming mechanism 42 and the vertical shaft pump 40. As the damming mechanism 42, a gate or a valve mechanism is used.

In the present reference example , inspection work for predetermined parts (impeller, guide vane, submerged bearing, etc.) inside the vertical shaft pump 40 is performed as follows. First, the operation of the vertical shaft pump 40 is stopped, and then, as shown in FIG. 7A, the damming mechanism 42 is closed to stop the inflow of liquid into the suction water tank 41. Next, the submersible pump 43 is operated to pump up the liquid in the suction water tank 41. The pumped liquid is transferred to the upstream side of the damming mechanism 42 or to a discharge water tank (not shown). The submersible pump 43 is stopped when the liquid level in the suction water tank 41 is lowered below the part to be inspected (see FIG. 7B). And the fiberscope 27 is inserted in the conduit | pipe 25, and the wear condition of the components arrange | positioned in the pump casing 2 and the state of arbitrary inspection locations are visually observed. In this state, since there is no liquid (sewage) around the parts to be inspected, the inspection can be performed without being affected by sewage or dust. In addition, when the surface of the inspection location is dirty due to dust or rust contained in the sewage, the inspection location is cleaned using the above-described liquid water guiding device (the liquid introduction pipe 29 and the liquid supply source 30), An image may be acquired.

FIG. 8 is a schematic diagram showing a pump system according to a second reference example of the present invention. Note that the configuration and operation of this reference example that are not specifically described are the same as those of the first reference example described above, and thus redundant description thereof is omitted. The vertical shaft pump 40 used in this reference example is a vertical shaft spiral mixed flow pump.

  As shown in FIG. 8, the vertical shaft pump 40 is installed outside the suction water tank 41 and is connected to the suction water tank 41 through a suction pipe 45. The suction pipe 45 is provided with a suction side valve 46. When the suction side valve 46 is closed, the flow of liquid from the suction water tank 41 to the vertical pump 40 is blocked. The vertical shaft pump 40 is connected to a discharge water tank (not shown) through a discharge pipe 47. The discharge pipe 47 is provided with a discharge side valve 48. When the discharge side valve 48 is closed, the liquid flow from the vertical pump 40 to the discharge water tank is blocked.

  For example, a drainage pump 44 as a discharge means is connected to the suction pipe 45 via a drainage line 50. A connection point where the drain line 50 is connected to the suction pipe 45 is located between the suction side valve 46 and the vertical shaft pump 40. The pump casing 2 is provided with an insertion port (guide passage) 51 for guiding the fiberscope 27 to a consumable part such as an impeller disposed therein. During operation of the vertical shaft pump 40, the insertion port 51 is closed by a closing tool (not shown).

In the present reference example , inspection work for predetermined parts (such as an impeller) inside the vertical shaft pump 40 is performed as follows. First, the operation of the vertical shaft pump 40 is stopped, and then the suction side valve 46 and the discharge side valve 48 are closed. Next, the drainage pump 44 is operated, and the liquid is discharged from the vertical shaft pump 40 (pump casing 2). The liquid discharged from the drain pump 44 is transferred to the suction water tank 41 or the discharge water tank. When the liquid is removed from the pump casing 2, the drain pump 44 is stopped. And the fiberscope 27 is inserted in the insertion port 51, and the wear condition etc. of the components arrange | positioned in the pump casing 2 are visually observed. Thus, also in this reference example , since there is no liquid around the parts to be inspected, the inspection work can be performed without being affected by sewage or dust. As in the reference example described above, a conduit may be provided instead of the insertion port 51. In addition, when the surface of the inspection location is dirty due to dust or rust contained in the sewage, the inspection location is cleaned using the above-described liquid water guiding device (the liquid introduction pipe 29 and the liquid supply source 30), An image may be acquired.

The above embodiments and reference examples can be combined as appropriate. For example, the check valve of the first embodiment may be provided in the conduit of the third embodiment. Further, the liquid introduction tube of the third embodiment may be disposed in the conduit of the first reference example . In the implementation form and reference examples described above, the fiberscope is used as an image acquisition unit, an endoscope equipped with a CCD camera at the tip by using a (microscope or endoscope) or underwater camera Also good.

  Although the embodiments of the present invention have been described so far, it is needless to say that the present invention is not limited to the above-described embodiments and may be implemented in various forms within the scope of the technical idea.

It is sectional drawing which shows the vertical shaft pump which concerns on the 1st Embodiment of this invention. 2 (a) is an enlarged side view showing the tip of the fiberscope inserted into the conduit shown in FIG. 1, and FIG. 2 (b) is a view seen from the direction of arrow II shown in FIG. 2 (a). . Fig.3 (a) is an enlarged view of the edge part of the conduit | pipe shown in FIG. 1, and shows the state at the time of pump operation. FIG.3 (b) is an enlarged view of the edge part of the conduit | pipe shown in FIG. 1, and shows the state at the time of inspection. It is a figure which shows the vertical shaft pump which concerns on the 2nd Embodiment of this invention. It is an enlarged view which shows the front-end | tip of the conduit | pipe and liquid introduction pipe | tube shown in FIG. FIG. 6 (a) is a side view showing the tip of the conduit and the liquid introduction tube in the third embodiment of the present invention, and FIG. 6 (b) is a view from the direction indicated by the arrow VI in FIG. 6 (a). FIG. 6C is a diagram showing another configuration example of the present embodiment. Fig.7 (a) is a schematic diagram which shows the pump system which concerns on the 1st reference example of this invention, FIG.7 (b) is a schematic diagram which shows the mode at the time of an inspection. It is a schematic diagram which shows the pump system which concerns on the 2nd reference example of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Impeller casing 1a Suction bell mouth 1b Pump bowl 2 Pump casing 3 Suspension pipe 4 Discharge curved pipe 6 Rotating shaft 7, 17 Support member 10 Impeller 11 Outer bearing 12, 15 Underwater bearing 13 Bowl bush 14 Guide vane 16 Drive shaft 18 Drive source 19 Hand hole 22 Pump installation floor 23 Installation base 24 Pump insertion hole 25 Conduit 25a Insertion port 25b Liquid supply port 27 Fiberscope (image acquisition means)
28 Check valve 29 Liquid introduction pipe 30 Liquid supply source 31 Guide member 32 Messenger wire 35 Liquid introduction tube 36 Light source 40 Vertical shaft pump 41 Suction water tank 42 Damping mechanism 43 Submersible pump 44 Drain pump 45 Suction pipe 46 Suction side valve 47 Discharge Piping 48 Discharge side valve 50 Drain line 51 Insertion port

Claims (9)

An impeller fixed to the rotating shaft;
A bearing that rotatably supports the rotating shaft;
A pump casing that houses the impeller;
Image acquisition means;
A conduit for guiding the image acquiring unit from said pump casing external to a predetermined inspection position inside the pump casing,
A liquid introduction pipe for guiding a transparent liquid to the predetermined inspection point ;
A guide member having a shape that fits gently on the inner peripheral surface of the conduit and does not close the conduit;
A wire attached to the guide member for assisting movement of the guide member within the conduit ;
The vertical shaft pump , wherein the guide member is attached to the image acquisition means .   The vertical shaft pump according to claim 1, wherein the image acquisition means is a fiberscope, an underwater camera, or an endoscope. The conduit has a liquid supply port to which the liquid is supplied and also functions as the liquid introduction pipe,
The vertical shaft pump according to claim 1, wherein a check valve is provided at a distal end of the conduit to restrict a handling liquid inside the pump casing from flowing into the conduit.   The vertical shaft pump according to claim 1, wherein the liquid introduction pipe is disposed inside the conduit.   The vertical shaft pump according to claim 4, wherein the guide member is attached to the image acquisition unit and the liquid introduction pipe. An inspection method for a vertical shaft pump according to claim 1 ,
A pump inspection method characterized in that the image is acquired by guiding the image acquisition means to a predetermined inspection location using the guide member and the wire provided in the conduit. The liquid introduction pipe is attached to the guide member,
The pump inspection method according to claim 6 , wherein an image is acquired by guiding the liquid introduction pipe together with the image acquisition unit to the predetermined inspection location. A light source for adjusting the amount of light at the time of image acquisition is attached to the guide member,
The pump inspection method according to claim 6 , wherein the image is acquired by guiding the light source together with the image acquisition unit to the predetermined inspection location. To the guide member, the liquid introduction tube and a light source for adjusting the amount of light at the time of image acquisition are attached,
The pump inspection method according to claim 6 , wherein an image is acquired by guiding the liquid introduction tube and the light source together with the image acquisition unit to the predetermined inspection location.

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