JP2009150262A - Pump, pump state inspecting and confirming method, and pump state inspecting and confirming device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pump, a pump state inspecting and confirming method, and a pump state inspecting and confirming device enabling inspection and confirmation of the wear state and the deterioration state of each inspection member without lifting the pump and facilitating the maintenance. <P>SOLUTION: This pump is provided with a small-sized camera 32, a vehicle 30 on which the small-sized camera 32 is mounted, and a wheel mechanism having wheels 31 which is attached to the vehicle 30 and emitting a magnetic force. The magnetic force emitted from the wheel mechanism of the vehicle 30 acts on a pump casing surface formed of a magnetic substance, and the vehicle 30 is moved along the pump casing surface. Consequently, since pump state image information is acquired through the small-sized camera 32, the state of the pump can be inspected and confirmed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a pump for pumping river water, drainage, etc., a pump status check method for checking and checking the pump status, and a status check and confirmation device, particularly for checking and checking the wear status and deterioration status of each part of the vertical shaft pump. The present invention relates to a pump status check confirmation method and status check check device suitable for the above.

  Generally, the vertical shaft pump is installed on the pump installation floor at the upper part of the water tank, and the accommodation pump bowl and the suction bell mouth are suspended from the guide vane and the impeller through the suspension pipe. Such a vertical shaft pump is operated in a state in which an impeller and an underwater bearing are immersed in water, and these members gradually wear with the passage of operation time. For this reason, it is necessary to periodically check the vertical shaft pump to check the state of wear of the impeller and the underwater bearing, and to repair or replace as necessary.

Conventionally, as a method of confirming the wear status of the vertical shaft impeller and underwater bearing, the vertical shaft pump is lifted with a crane or the like and the casing (hanging pipe, pump bowl, discharge curved pipe, etc.) is opened and confirmed. Method. As a method for confirming without pulling up the pump, there is a method in which a small camera is inserted into the pump to obtain image information of the internal situation, and it is judged from this image information whether repair is necessary. As shown in Patent Document 1, there is also one provided with a conduit for guiding image acquisition means such as a fiber scope from the outside of the pump casing to a predetermined consumable member inside the pump casing.
JP 2006-161790 A

The method of opening and checking the casing of the vertical shaft pump has the following problems.
-Workers and crane operators are also required to lift the pump by an overhead crane, etc., and the work cost for lifting becomes expensive.
-Lifting and checking the vertical shaft pump requires a considerable number of days after completion of the lifting work: visual inspection, re-installation, centering, and trial operation. Therefore, since the target pump cannot be operated during that period, the drainage facility during that period cannot be drained in the required amount. In other words, there is a problem that it cannot cope with drainage in an emergency.
-To ensure that drainage is always possible even during inspections and replacements, measures such as installing a temporary pump are required.
・ The work involves lifting and checking heavy objects, which is dangerous work.

The inspection and confirmation method for placing the small camera in the pump casing has the following problems.
-It is very difficult to determine which position (part) in the pump the image information is.
-It is difficult to photograph the same part as the part photographed in the previous inspection, and it is not possible to manage the tendency of how much wear or deterioration has progressed compared to the image information acquired during the previous inspection.

  The one disclosed in Patent Document 1 requires that a pump be provided with a conduit for guiding image acquisition means such as a fiber scope from the outside of the pump casing to a predetermined consumable member inside the pump casing, and the pump manufacturing cost is high. Become.

  The present invention has been made in view of the above points. A pump that can check and check the wear and deterioration states of each inspection section without pulling up the pump, and a pump that can be easily maintained, a pump status check confirmation method, and a situation An object is to provide an inspection confirmation device.

  In order to solve the above-mentioned problems, the present invention includes a wheel mechanism, a magnetic attraction force is applied to a pump casing surface made of a magnetic material, a camera is mounted on a cart that can move along the pump casing surface, and the cart is a pump casing. According to the present invention, there is provided a pump status check and confirmation method characterized by acquiring image information of a pump status via a camera by moving along a surface and checking and checking the pump status.

  As described above, the magnetic attraction force is applied to the pump casing surface, and the camera is mounted on the carriage that can move along the pump casing surface, so that the camera is in a stable state and can acquire stable image information of the pump status. It becomes possible.

  The present invention also includes a wheel mechanism that includes a wheel mechanism, allows a magnetic attraction force to act on a pump casing surface made of a magnetic material, and moves along the pump casing surface, and a cart movement that moves the cart along the pump casing surface. Means, a camera mounted on the carriage, and image information acquisition means for acquiring image information of the pump status via the camera, and checking and confirming the pump status from the image information acquired by the image information acquisition means It is in the pump status check device.

  Since the magnetic attraction force is applied to the pump casing surface as described above and equipped with image information acquisition means for acquiring image information of the pump status via a camera mounted on a carriage that can move along the pump casing surface, Similar to the above-described invention, the camera mounted on the carriage can stop moving in a stable state, and can acquire image information with stable pump status.

  Further, the present invention is characterized in that, in the above-described pump status check and confirmation device, the wheel mechanism includes a wheel rotating along the pump casing surface, and magnetic force generating means for generating a magnetic force is provided on the wheel.

  Further, the present invention is characterized in that, in the pump status check and confirmation apparatus, the magnetic force generating means is mounted apart from a pump casing surface with which a wheel contacts.

  Since the magnetic force generating means (permanent magnet or electromagnet) is mounted apart from the surface of the pump casing with which the wheel contacts, it is possible to adjust the adsorption force acting on the pump casing of the magnetic force generated from the magnetic force generating means. The carriage is easy to move on the casing surface. Further, a buffer material such as rubber or plastic can be provided between the magnetic force generating means and the pump casing to adjust the attraction force.

  Further, the present invention is characterized in that, in the pump status check and confirmation apparatus, the coating applied to the pump casing surface is a multilayer, and the coating color of each layer is a different color.

  As mentioned above, the coating on the pump casing surface is multi-layered and the coating color of each layer is a different color, so it is possible to quantitatively check the deterioration status of the pump, etc., depending on the state of paint peeling due to the operation of the pump. .

  Further, the present invention is the above-described pump status check confirmation device, wherein the status check is a periodic status check and a position check member is provided in the pump casing in order to acquire an image of the same location with a camera. It is characterized by that.

  By providing the position confirmation member in the pump casing as described above, it is possible to reliably acquire image information at the same location, and it is possible to manage the tendency of the deterioration state (for example, the extent of the corrosion area). In addition, systematic maintenance can be performed by predicting corrosion progress.

  The present invention also provides an amount of wear of a submerged bearing of a pump including an impeller fixed to the rotating shaft, an underwater bearing that rotatably supports the rotating shaft, and a pump casing that houses the rotating shaft and the impeller. In the pump status check device for checking and checking, a submersible bearing or a wear amount detecting member through which a rotating shaft provided at a predetermined position of the pump casing passes, and the pump status check and checking device according to claim 2, A gap amount between the rotary shaft and the underwater bearing or the wear amount detecting member is inspected, and the wear amount of the underwater bearing is confirmed from the gap amount.

  The underwater bearing or wear amount detecting member through which the rotating shaft penetrates as described above, and the gap amount between the rotating shaft and the underwater bearing or wear amount detecting member are inspected by the pump status check and confirmation device according to claim 2, Therefore, it is possible to check and confirm the wear status of the underwater bearing easily and accurately with a stable camera image.

  The present invention also relates to an amount of wear of a submerged bearing of a pump including an impeller fixed to a rotating shaft, a submerged bearing that rotatably supports the rotating shaft, and a pump casing that houses the rotating shaft and the impeller. In the apparatus for checking and confirming the condition of the pump, a shaft runout detecting member having a through-hole having a predetermined gap between the rotary shaft and the outer peripheral surface of the rotary shaft, and a shaft A wear amount check confirmation means is provided for checking and checking the wear amount of the underwater bearing from the displacement or the displacement amount of the shaft shake detection member when the rotating shaft comes into contact with the shaft shake detection member due to the shake.

  As described above, the wear amount of the underwater bearing can be easily checked by checking the amount of wear of the shaft runout detection member and the amount of wear of the underwater bearing. can do.

  The present invention also provides an underwater bearing in a pump including an impeller fixed to a rotating shaft, an underwater bearing that rotatably supports the rotating shaft, and a pump casing that houses the rotating shaft and the impeller. A temperature sensor inserted in the bearing component and a wear state tendency management means for managing the tendency of the wear state of the underwater bearing by performing temperature management from the output of the temperature sensor are provided.

  By providing the temperature sensor inserted and arranged in the bearing component as described above and the wear state tendency management means, the contact heat of the rotary shaft from the rotary shaft contact surface of the bearing component to the temperature sensor accompanying wear of the underwater bearing. Since the measured distance increases and the measured temperature rises, the wear status of the underwater bearing can be inspected and checked by managing the temperature with the wear state tendency management means.

  According to the present invention, the magnetic attraction force is applied to the pump casing surface, the image information of the pump status is acquired via the camera mounted on the carriage that can move along the pump casing surface, and the pump status is inspected and confirmed. The camera is in a stable state, and stable image information of the pump can be obtained.

  Further, by using an image information acquisition unit that applies a magnetic attraction force to the pump casing surface and acquires image information of the pump status via a camera mounted on the carriage that can be moved along the pump casing surface by the carriage moving unit, Since the pump status is inspected and confirmed, the camera mounted on the carriage can stop moving in a stable state, and it is possible to acquire stable image information of the pump status.

  In addition, by attaching the magnetic force generating means (permanent magnet or electromagnet) away from the pump casing surface that comes into contact with the wheel, it becomes possible to adjust the attractive force acting on the pump casing of the magnetic force generated from the magnetic force generating means, The carriage is easy to move on the pump casing surface. Further, it is possible to adjust the adsorption force between the magnetic force generating means and the pump casing surface by using a cushioning material such as rubber or plastic.

  In addition, the coating of the pump casing surface is made multilayer, and the coating color of each layer is different, so that it is possible to quantitatively check the deterioration status of the pump and the like depending on the peeling state of the coating due to the operation of the pump.

  In addition, by providing a position confirmation member in the pump casing, it is possible to reliably acquire image information at the same location, and it is possible to manage the tendency of the deterioration situation (for example, the extent of the corrosion area), Planned maintenance by predicting progress.

  In addition, a submersible bearing or wear amount detection member that penetrates the rotating shaft is provided, and the wear amount of the submersible bearing is easily checked by checking the wear amount of the submersible bearing from the gap between the rotating shaft and the submersible bearing or wear amount detecting member. Can be visually inspected and confirmed with a camera.

  Also, by providing the shaft runout detection member, the rotating shaft will run out during pump operation and come into contact with the shaft runout detection member, so that the amount of wear of the underwater bearing becomes a specified value from the displacement or displacement amount of this shaft runout detection member. You can easily check that you have reached it.

  In addition, the temperature sensor is inserted and arranged in the bearing component, so that the contact heat transfer distance of the rotary shaft from the rotary shaft contact surface of the bearing component to the temperature sensor is shortened due to wear of the underwater bearing, and the measured temperature increases. By utilizing this phenomenon, it is possible to manage the tendency of the wear condition of the underwater bearing from this measured temperature.

  Embodiments of the present invention will be described below with reference to the drawings. In each figure, the part which attached | subjected the same code | symbol shows the same or an equivalent part. FIG. 1 is a sectional view showing an example of the overall configuration of a vertical shaft pump to which a pump status check method and status check check device according to the present invention are applied, and a drainage station. As shown in the drawing, the vertical shaft pump includes a pump part casing 3 including a suction bell mouth 1 and a pump bowl 2, a suspension pipe 4, and a discharge curved pipe 5. Reference numeral 6 denotes a rotating shaft. The rotating shaft 6 is disposed through the pump bowl 2, the suspension pipe 4, and the discharge curved pipe 5, and is located outside the submerged bearing 7 and the discharge curved pipe 5 disposed in the pump bowl 2. Is rotatably supported by an outer bearing 8 disposed in the position. The pump bowl 2, the suspension pipe 4, and the discharge curved pipe 5 may be referred to as a pump casing in which a carriage 30 described later moves.

  An impeller (impeller) 10 is fixed to a tip end portion (lower end portion in the drawing) of the rotating shaft 6 so that the rotating shaft 6 and the impeller 10 rotate integrally. The impeller 10 has a plurality of blades, and a plurality of guide vanes 13 are arranged above (discharge side) the impeller 10. The guide vane 13 is fixed to the inner peripheral surface of the pump bowl 2. The rear end (upper end in the figure) of the rotary shaft 6 is connected to the drive shaft 16 of the prime mover 15 via a joint 14. The suspension pipe 4 is attached to a pump installation floor 19 via a pump base 18. The lower part of the pump installation floor 19 is a water tank 20 into which water (handling liquid) flows. The suction bell mouth 1, the pump bowl 2, and the suspension pipe 4 are arranged in the water tank 20, and the discharge curved pipe 5 is a water tank 20. It is arranged outside. In addition, W shows the water surface in the water tank 20 in the figure.

  When the prime mover 15 is activated and the rotary shaft 6 connected to the drive shaft 16 is rotated in the drainage station having the vertical shaft pump having the above structure, the impeller 10 rotates. The water sucked from the suction port 1 a of the suction bell mouth 1 by the rotation of the impeller 10 passes through the pump bowl 2, the suspension tube 4, and the discharge curved tube 5 to the discharge port of the discharge curved tube 5. It flows into a connected discharge pipe (not shown) and is sent to a predetermined place. The upper part of the pump installation floor 19 is an area where the pump can be inspected and confirmed. The water tank 20 below the pump installation floor 19 usually has water, and the pump cannot be inspected and confirmed. In FIG. 1, reference numeral 21 denotes an inspection hole for carrying a cart 30 equipped with a small camera 32, which will be described later in detail, and inspecting the inside of the pump. The inspection hole 21 is opened by removing the body, and the carriage 30 can be carried inside.

  FIG. 2 is a diagram showing a schematic configuration of a cart 30 equipped with a small camera 32 used for checking and checking the condition of the pump according to the present invention, FIG. 2 (a) is a plan view, and FIG. 2 (b) is a side view. is there. As shown in the figure, the cart 30 includes a wheel mechanism having a plurality of wheels 31 (four in total in the figure, two front wheels and two rear wheels). Each wheel 31 has a configuration in which a disk-shaped magnet body 31b is interposed between a disk body 31a made of two nonmagnetic materials and a disk body 31a. Thus, by sandwiching the magnet body 31b with the disk bodies 31a and 31a made of a non-magnetic body, it is possible to prevent the magnet body 31b from adhering to the grounding surface of the casing or the like when the carriage is overturned and being prevented from moving. A small camera (fiberscope, CCD, etc.) 32 is mounted on the carriage 30. The small camera 32 is supported by a camera rotation mechanism 33 composed of two disks or the like, and the camera rotation mechanism 33 allows the small camera 32 to rotate its tip at a predetermined angle in the vertical direction. It has become. The small camera 32 includes a signal line 34 for transmitting and receiving various signals such as image information between the small camera 32 and a control unit (not shown), and a driving wire for driving the camera rotation mechanism 33. 35 is attached. In addition, although a permanent magnet is used here as the magnet body 31b, it is a matter of course that an electromagnet may be used.

  FIG. 3 is a view showing a state in which the inside of the vertical shaft pump is inspected and confirmed using the cart 30 on which the small camera 32 is mounted. As shown in the figure, the carriage 30 is carried from the inspection hole 21 and suspended in the suspension pipe 4 via a suspension wire 36 (wire for lowering and raising the carriage 30). Thereby, the magnetic force from the magnet body 31 b of the wheel 31 of the carriage 30 acts on the inner surface of the suspension pipe 4 made of a magnetic body (steel material), and the wheel 31 is attracted to the inner surface of the suspension pipe 4. The carriage 30 moves up and down along the inner surface of the suspension pipe 4 by moving the suspension wire 36 up and down. As a result, the small camera 32 also moves up and down along the inner surface of the suspension tube 4 and further descends along the inner curved surface of the pump bowl 2. If the small camera 32 is simply suspended in the suspension tube 4 or the pump bowl 2 via the suspension wire 36, the small camera 32 becomes unstable (fluctuates), and stable image information cannot be obtained. Here, the four wheels 31 of the carriage 30 are adsorbed on the inner surface of the suspension pipe 4 or the pump bowl 2 and move up and down stably along the inner surface, so the small camera 32 also moves up and down stably. To do. Further, by providing a mechanism that can detect the vertical movement of the small camera 32 and the level and orientation of the carriage 30, it is possible to determine a position at which more stable and accurate image information is obtained.

  In the vertical shaft pump (particularly the mixed flow pump), a portion of the pump bowl 2 having the guide vane 13 is a curved portion, and the guide vane 13 is obstructed and only a small camera is suspended by a wire. There is a problem that images of 10 parts of the impeller cannot be taken well. Here, since the wheel 31 of the carriage 30 moves while being attracted to the inner surface of the curved portion of the pump bowl 2 by the magnetic force of the magnet body 31b, it is possible to guide the small camera 32 to the blades of the impeller 10, It becomes possible to acquire stable image information of the target location. The inspector 37 may operate the suspension wire 36 for suspending the carriage 30 to move the carriage 30, but a drive machine (not shown) such as an electric motor and a wireless device are mounted on the carriage 30 to remotely You may make it move the trolley | bogie 30 by operation.

  FIG. 4 is a diagram illustrating another configuration example of the wheel 31 of the carriage 30. In the wheel 31 shown in FIG. 2, the outer peripheral surfaces of the disc body 31a made of two nonmagnetic materials and the magnet body 31b are the same surface, but here the diameter of the magnet body 31b is made smaller than the diameter of the disc body 31a. The outer peripheral surface of the magnet body 31b is recessed by a predetermined dimension g1 from the disc body 31a made of a non-magnetic material located on both sides and the outer peripheral surface of the disc body 31a. By adopting such a configuration, when the wheel 31 is configured by a magnet, or as shown in FIG. 2, the outer peripheral surface of the magnet body 31b is the same as the outer peripheral surface of the both side disk bodies 31a, 31a. In this case, the magnetic attraction force becomes strong, and the carriage 30 may not descend due to its own weight. Also, when pulling up, a large pulling force is required. As shown in FIG. 4, the outer peripheral surface of the magnet body 31b is recessed by a predetermined dimension g1 from the outer peripheral surfaces of the disk bodies 31a and 31a, and the pump casing (the suspension pipe 4 and the like) By separating from the inner surface 38 of the pump bowl 2 and the like) 38 by a certain distance g1, it is possible to adjust the magnetic attraction force and configure the cart 30 that is easy to operate.

  FIG. 5 is a diagram illustrating another configuration example of the wheel 31 of the carriage 30. Here, a cushioning material 40 made of a rubber material or a plastic material is attached to the outer peripheral surface of the magnet body 31b. Since the pump casing 38 with which the wheel 31 of the carriage 30 contacts, such as the inner surface of the suspension pipe 4 and the pump bowl 2, has many irregularities such as joints and guides, the outer peripheral surface of the magnet body 31 b and the wheel 31 as shown in FIG. Even if the distance of the pump casing 38 is increased, in some cases, the magnet body 31b may come into contact with and adhere to the irregularities such as the joints and guides, and the carriage 30 may not be lifted. Therefore, as shown in FIG. 5, if the buffer material 40 is attached to the outer peripheral surface of the magnet body 31, it is possible to reliably prevent the magnet body 31 b from adhering to irregularities such as joints and guides of the pump casing 38. In addition, the pump casing 38 such as the suspension pipe 4 or the pump bowl 2 has a curved surface. However, as shown in FIG. It is possible to move smoothly in the plane.

  FIG. 6 is a view showing a state in which the inside and outside of the vertical shaft pump are inspected and confirmed using the carriage 30 on which the small camera 32 is mounted. As shown in the figure, when checking and checking the inside of the pump, the carriage 30 is carried from the inspection hole 21 and suspended in the suspension pipe 4 via the suspension wire 36. In addition, when checking and checking the outer surface of the pump, the carriage 30 is carried and suspended from the equipment carry-in / out opening 45 provided in the pump base 18 so as to be openable and closable outside the suspension pipe 4 in the water tank 20 via the suspension wire 36. The carriage 30 is raised and lowered along the outer peripheral surface of the suspension pipe 4. In this vertical shaft pump, an underwater bearing 42 is provided in the suspension pipe 4 via an underwater bearing support 43 in addition to the underwater bearing 7.

  As shown in FIG. 7, the coating 50 applied to the suspension tube 4 and the inner surface is a multilayer (in the figure, three layers of the first layer 51, the second layer 52, and the third layer 53), and the coating color of each layer is different for each layer. It is different. As a result, it is possible to quantitatively check and confirm the internal deterioration state according to the state of peeling of the paint due to the operation of the pump. Although FIG. 7 is an image of the state of the inner surface, the outer surface of the suspension pipe 4 can also be inspected and confirmed quantitatively according to the state of paint peeling by applying multiple layers of coating colors differently. It becomes possible. FIG. 7 illustrates an example in which the inner and outer surfaces of the suspension pipe 4 are coated with multiple layers of different coating colors. Naturally, the inner and outer surfaces of the pump bowl 2 and the inner and outer surfaces of the suction bell mouth 1 are coated with multiple layers of different coating colors. Even if applied, it is possible to inspect and confirm the external deterioration status quantitatively. In FIG. 6, the outer surface of the casing is used as a means for guiding it to the target position. However, it is provided on the outside of the casing (or provided for inspection), and is absorbed by a steel material such as a small pipe or rail, and the inspection carriage is moved to the target position. It may be moved to. In the case of a horizontal shaft pump, it is possible to easily check the inside of the pump by opening the upper inspection cover attached to the pump, so this structure and means are particularly effective for a vertical shaft pump. To do. However, this structure and means can be applied to the internal and external surface investigation of the suction pipe of the horizontal axis pump.

  In the inspection check of the internal condition of the pump, the periodic inspection check acquires the image information of the same part, and in order to manage the tendency, as shown in FIG. 8 and FIG. (Stainless steel or the like) is installed as the position confirmation member 55. By installing the position confirmation member 55 in this way, it is possible to reliably acquire image information of the same location, and it is possible to manage the tendency of the deterioration state (such as the extent of the corrosion area). As a result, systematic maintenance management based on the prediction of corrosion progress can be performed. Further, since the position confirmation member 55 is made of a steel material that can be used in an unpainted state such as stainless steel, the light from the light source provided in the small camera 32 or the carriage 30 can be easily reflected, and easily. The position can be confirmed. 8 and 9, the example in which the position confirmation member 55 is installed on the inner surface of the suspension pipe 4 has been described. Naturally, by installing the position confirmation member 55 on the inner surface of the pump bowl 2, trend management of the deterioration state can be performed. It becomes possible.

  Further, the position confirmation member 55 is not limited to a long member as shown in FIGS. 8 and 9, and may be a small-diameter disk as shown in FIG. Further, numbers and characters may be imprinted as shown in FIG. 10B so that the position can be further specified.

  Also, the position confirmation member 55 identifies the position of the small camera 32 (location of the acquired image). However, when a position confirmation member such as an existing pump cannot be installed, the IC tag (chip) is attached to the small camera 32 ( Alternatively, the position of the small camera 32 may be specified by using the IC tag communication and position specifying function by being mounted on the carriage 30).

  FIG. 11 is a diagram showing a state in which the internal state of the vertical shaft pump is inspected and confirmed using the cart 30 on which the small camera 32 is mounted. As shown in the drawing, an underwater bearing or wear amount detection member 57 having a through hole through which the rotary shaft 6 passes is provided at the upper end portion of the pump bowl 2, and the underwater bearing or wear amount detection member 57 is inserted into the The amount of wear of the bearing 7 and the underwater bearing 42 is inspected and confirmed visually or by image information acquired by the small camera 32 mounted on the carriage 30.

  FIG. 12 is a diagram illustrating a configuration example of the underwater bearing wear amount detection mechanism of the vertical shaft pump. As shown in the drawing, the underwater bearing wear amount detection mechanism 60 includes a disk-like member 61 having a through hole 61a having an inner diameter larger than the outer diameter of the rotary shaft 6 in the upper part of the underwater bearing 7, and through holes 61a on both upper and lower surfaces thereof. The disk-shaped member 62 in which the hole 62a having an inner diameter larger than the inner diameter is formed is disposed. The disc-like member 61 and the disc-like member 62 are positioned and installed by a shear pin or the like that is broken (or deformed) when the rotating shaft 6 contacts the inner peripheral surface of the through hole 61a. The underwater bearing 7 is worn, and the rotating shaft 6 comes into contact with the inner peripheral surface of the through hole 61a of the disk-like member 61. When the pump is operated in this state, the rotational force (torque) of the rotary shaft 6 is transmitted, and the disc-like member 61 is displaced (rotated, etc.). As a result, the positions of the hole 61b formed in the disk-like member 61 and the holes 62b, 62b formed in the disk-like members 62, 62 are displaced from the normal state of FIG. 12B to the state of FIG. It can be confirmed that the amount of wear of the underwater bearing 7 has reached the specified value.

  Further, in the underwater bearing wear amount detection mechanism 60, as shown in FIG. 12 (d), a scribing line 63 is formed on the outer peripheral surface of the disk-shaped member 61 and the disk-shaped members 62 and 62, as shown in FIG. When the marking line 63 is displaced (displaced) from the normal state of (d) as shown in FIG. 12 (e), it can be confirmed that the wear amount of the underwater bearing 7 has reached the specified value. 12A is a cross-sectional view of the underwater bearing wear amount detection mechanism, FIGS. 12B and 12C are AA arrow views, and FIGS. 12D and 12E are BB arrow views. FIG.

  Further, in the underwater bearing wear amount detection mechanism 60, as shown in FIG. 13, the lead wire 64 is passed through the disc-like member 61 and the disc-like members 62, 62, and the through-hole of the disc-like member 61 of the rotating shaft 6. If the conductor 64 is configured to be broken by relative displacement (rotation or the like) due to contact with the inner peripheral surface 61a, and the breakage of the conductor 64 can be detected by the detection device 65, a small size mounted on the carriage 30. Even without checking with the camera 32 or the like, the state can always be monitored by the detection device 65, and when the specified wear amount is reached, the underwater bearing can be replaced quickly, and the reliability can be improved.

  FIG. 14 is a diagram illustrating an example of a state in which the internal state of the vertical shaft pump is inspected and confirmed. An underwater bearing wear amount detection mechanism 70 is provided below the impeller 10. The underwater bearing wear amount detection mechanism 70 includes a columnar member 72 that extends downward in the axial direction from the center of the impeller 10 and a wear amount detection member 71 that rotatably supports the columnar member 72. The cylindrical member 72 rotates with the operation of the pump, and the gap between the wear amount detecting member 71 and the cylindrical member 72 also increases in proportion to the wear amount of the underwater bearing 7. When an inspector 73 enters the water tank 20, the wear amount of the underwater bearing 7 can be confirmed by visually observing the gap between the wear amount detection member 71 of the underwater bearing wear amount detection mechanism 70 and the cylindrical member 72.

  FIG. 15 is a diagram showing another example of detecting the wear amount of the submerged bearing of the vertical shaft pump. As shown in the figure, a temperature sensor 75 is inserted and arranged in a bearing constituent member 7 a constituting the underwater bearing 7, and the temperature is measured by a temperature measuring device 76 from the output. The tip position of the temperature sensor 75 is set to a position that is a predetermined distance g3 (for example, 10 mm or less) away from the surface of the bearing constituent member that contacts the rotating shaft 6, and the temperature management measured by the temperature measuring device 76 is performed. It is possible to manage the tendency of the wear state, that is, to monitor the increase in the wear amount, and to determine the confirmation time for checking the wear of the underwater bearing 7 by the underwater bearing wear amount detection mechanism 60. When it is determined that the confirmation time has elapsed, as described with reference to FIGS. 12A to 12E, the underwater bearing wear amount detection mechanism 60 checks and confirms the wear amount of the underwater bearing 7.

  FIG. 16 is a conceptual diagram showing the relationship between the temperature measured by the temperature measuring device 76 and the pump operation time (= underwater bearing wear amount). With the wear of the underwater bearing 7 (pump operation time), the distance g3 from the contact surface of the bearing component 7a to the rotating shaft 6 and the tip of the temperature sensor 75 is shortened, and the temperature measured by the temperature measuring device 76 increases. To do. That is, the wear tendency of the underwater bearing 7 can be managed by managing the temperature measured by the temperature measuring device 76 using the correlation between the underwater bearing wear amount and the measured temperature. If the temperature sensor 75 is installed on a member other than the bearing constituent member 7a, there is an influence of heat transfer between the members, and it is difficult to catch a rise in temperature. If the tip of the bearing component 7a is installed at a position farther from the contact surface of the bearing component 7a with the rotating shaft 6 (for example, the surface temperature of the bearing case, etc.), the transmission distance is too large and the temperature tends to increase. It is difficult to catch. Therefore, here, the temperature sensor 75 is inserted and installed directly into the bearing constituent member 7a. The predetermined distance g3 from the contact surface of the bearing component 7a with the rotating shaft 6 to the tip of the temperature sensor 75 is preferably within 10 mm.

  Since the wear tendency of the underwater bearing 7 can be managed as described above, replacement preparation (arrangement etc.) of the underwater bearing 7 can be performed in advance, and the pump function can be quickly restored. The manufacturing period (several months) can be shortened as compared with the case where the underwater bearing wear amount detection mechanism 60 detects that the amount of wear of the underwater bearing has reached the specified replacement time. In a drainage station or the like that does not have a spare pump, the pump drainage function can be minimized, which can greatly contribute to economic efficiency and reliability, such as preventing flood damage.

  In addition, as shown in FIG. 17, the cart 30 on which the small camera 32 is mounted has a structure in which the rear wheels 31 and 31 can freely turn left and right by a predetermined angle, and an inspector 37 on the surface of the pump installation floor 19 By operating the wires 66 and 67, the carriage 30 can be moved left and right. Further, the vertical movement of the carriage 30 can be raised by the descent of the carriage 30 (adjusting the pulling speed of the hanging wire 36) and the lifting of the hanging wire 36. In the above example, the rear wheels 31 and 31 can turn left and right freely at a predetermined angle, but the front wheels 31 and 31 may turn left and right freely at a predetermined angle.

  In the above example, the cart 30 is shown as an example of a structure in which the cart 30 is manually operated via a wire. However, the cart 30 is moved up and down, turned left and right, and the mounted small camera 32 is turned up and down. Therefore, even if a plurality of small motors are mounted on the cart 30 and these small motors are operated by remote control or the like, the cart 30 is moved up and down, turned left and right, and the small camera 32 is swung up and down. Good.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the technical idea described in the claims and the specification and drawings. Is possible. For example, in the above embodiment, the magnet body 31b is provided on each wheel 31 of the wheel mechanism as a magnetic force generating means for generating a magnetic force. However, the present invention is not limited to this, and the magnetic attraction force is made of a magnetic body. As long as the magnetic attraction force that presses the carriage against the pump casing surface is applied to the carriage by acting on the pump casing face, the attachment position of the magnet is not particularly limited. Further, the magnetic force generating means for generating the magnetic force is not limited to the permanent magnet, but may be an electromagnet.

It is sectional drawing which shows the example of whole structure of the vertical shaft pump which applies the condition check confirmation method and condition check confirmation apparatus of the pump concerning this invention, and a drainage station. FIG. 2A is a plan view and FIG. 2B is a side view showing a schematic configuration of a carriage equipped with a small camera used for checking a situation according to the present invention. It is sectional drawing which shows the example of whole structure of the vertical shaft pump which is implementing the status check confirmation of the pump which concerns on this invention, and a drainage station. It is a figure which shows the structure of the wheel of the trolley | bogie carrying the small camera used for the situation check confirmation which concerns on this invention. It is a figure which shows the structure of the wheel of the trolley | bogie carrying the small camera used for the situation check confirmation which concerns on this invention. It is sectional drawing which shows the example of whole structure of the vertical shaft pump which is implementing the status check confirmation of the pump which concerns on this invention, and a drainage station. It is a figure which shows schematic structure of the multilayer coating provided in the hanging pipe in order to implement the condition check check of the pump which concerns on this invention. It is a figure which shows the position confirmation member provided in the suspension pipe in order to implement the status check confirmation of the pump which concerns on this invention. It is a figure which shows the position confirmation member provided in the suspension pipe in order to implement the status check confirmation of the pump which concerns on this invention. It is a figure which shows the position confirmation member provided in the suspension pipe in order to implement the status check confirmation of the pump which concerns on this invention. It is sectional drawing which shows the example of whole structure of the vertical shaft pump which is implementing the status check confirmation of the pump which concerns on this invention, and a drainage station. It is a figure which shows the structural example of the underwater bearing wear amount detection mechanism used in order to implement the condition check check of the pump which concerns on this invention, FIG. 12 (a) is a sectional side view, FIG.12 (b), (c) is A FIG. 12A is a view taken along the line BB, and FIGS. 12D and 12E are views taken along the line BB. It is a figure which shows the structural example of the underwater bearing wear amount detection mechanism used in order to implement the condition check check of the pump which concerns on this invention. It is sectional drawing which shows the example of whole structure of the vertical shaft pump which is implementing the status check confirmation of the pump which concerns on this invention, and a drainage station. It is a figure which shows the structural example of the underwater bearing wear amount detection mechanism used in order to implement the condition check check of the pump which concerns on this invention. It is a conceptual diagram which shows the relationship between the measured temperature by the temperature sensor inserted and arrange | positioned at a submerged bearing structural member, and pump operation time. It is a top view which shows schematic structure of the trolley | bogie carrying the small camera used for the situation check confirmation which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Suction bell mouth 2 Pump bowl 3 Pump part casing 4 Suspension pipe 5 Discharge curved pipe 6 Rotating shaft 7 Underwater bearing 8 Outer bearing 10 Impeller 13 Guide vane 14 Joint 15 Engine 15 Drive shaft 18 Pump base 19 Pump installation floor 20 Water tank DESCRIPTION OF SYMBOLS 21 Inspection hole 30 Bogie 31 Wheel 31a Disc body 31b Magnet body 32 Small camera 33 Camera rotation mechanism 34 Signal wire 35 Driving wire 36 Hanging wire 37 Inspector 38 Pump casing 40 Buffer material 42 Underwater bearing 43 Underwater bearing support DESCRIPTION OF SYMBOLS 50 Coating 51 1st layer 52 2nd layer 53 3rd layer 55 Position confirmation member 60 Underwater bearing wear amount detection mechanism 61 Disk-shaped member 62 Disk-shaped member 63 Scribing wire 64 Lead wire 65 Detector 70 Detection of underwater bearing wear Mechanism 71 Wear amount detection member 72 Cylindrical member 73 Inspector 75 Temperature Sensor 76 temperature measurement device

Claims (9)

Equipped with a wheel mechanism, a magnetic attraction force is applied to a pump casing surface made of a magnetic material, and a camera is mounted on a carriage that can move along the pump casing surface;
A pump status inspection and confirmation method characterized in that by moving the carriage along the pump casing surface, image information of the pump status is acquired via the camera and the pump status is checked and checked. A carriage that includes a wheel mechanism, causes a magnetic attraction force to act on a pump casing surface made of a magnetic material, and moves along the pump casing surface;
Trolley moving means for moving the trolley along the pump casing surface;
A camera mounted on the carriage;
Image information acquisition means for acquiring image information of the pump status via the camera,
An apparatus for checking and checking the pump status, wherein the status of the pump is checked and checked from the image information acquired by the image information acquisition means. In the pump status check device according to claim 2,
The pump state inspection and confirmation device according to claim 1, wherein the wheel mechanism includes a wheel that rotates along the surface of the pump casing, and magnetic force generating means for generating the magnetic force is provided on the wheel. In the pump status check device according to claim 3,
The apparatus for checking and checking the condition of a pump, wherein the magnetic force generating means is mounted apart from the pump casing surface with which the wheel contacts. In the pump status check device according to claim 2,
An apparatus for checking and confirming pump status, wherein the coating applied to the pump casing surface is a multilayer, and the coating color of each layer is a different color. In the pump status check device according to claim 2,
A pump status check apparatus, wherein the status check check is a periodic check of status check, and a position check member is provided in the pump casing in order to acquire an image of the same location with the camera. Check and confirm the amount of wear of the submerged bearing of the pump comprising an impeller fixed to the rotating shaft, an underwater bearing that rotatably supports the rotating shaft, and a pump casing that houses the rotating shaft and the impeller. In the pump status check device,
An underwater bearing or a wear amount detecting member, which is provided at a predetermined position of the pump casing and through which the rotating shaft passes, is provided. An apparatus for checking and checking a pump status, wherein the gap amount of the detection member is checked, and the wear amount of the underwater bearing is confirmed from the gap amount. Check and confirm the amount of wear of the submerged bearing of the pump comprising an impeller fixed to the rotating shaft, an underwater bearing that rotatably supports the rotating shaft, and a pump casing that houses the rotating shaft and the impeller. In the pump status check device,
A shaft runout detecting member having a through hole in which the rotary shaft passes through a predetermined position of the pump casing and having a predetermined gap between the rotary shaft and an outer peripheral surface of the rotary shaft, and the rotary shaft detects the shaft runout by shaft runout. An apparatus for checking and confirming the condition of a pump, comprising a wear amount checking and checking means for checking and checking the wear amount of the underwater bearing from the displacement or the amount of displacement of the shaft runout detecting member when contacting the member. In a pump comprising an impeller fixed to a rotating shaft, an underwater bearing that rotatably supports the rotating shaft, and a pump casing that houses the rotating shaft and the impeller.
A temperature sensor inserted and disposed in a bearing component constituting the submersible bearing, and a wear state tendency management means for managing the trend of the wear state of the submerged bearing by performing temperature management from the output of the temperature sensor. Features a pump.

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