JP2019210808A - Pump equipment and inspection method for the same - Google Patents

Abstract

To provide pump equipment for allowing easy inspection of a seal member.SOLUTION: The pump equipment includes a fixed base 62 having an inner peripheral face 62b exposed from a pump installation hole 103, a flexible base 60 having a cylindrical body part 60a arranged on the radial inside of the fixed base 62 and a flange part 60b extending from the upper end of the body part 60a to the radial outside of the body part 60a, an upper side seal member 75A and a lower side seal member 75B shaped annular and arranged between the inner peripheral face 62b and the outer peripheral face of the body part 60a in the vertical direction, and a fluid supply hole formed in either the flexible base 60 or the fixed base 62 to supply pressurized fluid into a space S1 between the upper side seal member 75A and the lower side seal member 75B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pump facility and a pump facility inspection method.

  The vertical shaft pump installed in the pump facility generally has an impeller disposed in a suction water tank, and pumps the impeller by a drive device disposed above the suction water tank to pump water. The pump casing that houses the impeller is suspended in the suction water tank. Hereinafter, in this specification, the vertical shaft pump may be simply referred to as a pump.

JP 2004-108316 A

  The pump equipment shown in Patent Document 1 is arranged between a base on which a pump is installed, a seal holder disposed radially inside the base, and an inner peripheral surface of the base and an outer peripheral surface of the seal holder. And a sealing member.

  The seal member is an important part for maintaining the water tightness of the pump installation hole. However, since the seal member is disposed between the base and the seal holder, once the pump is installed, the operator cannot visually observe or touch the seal member from the outside of the pump. . However, the sealing member cannot maintain its elasticity due to deterioration over time, and as a result, there is a possibility that the sealing function cannot be sufficiently exhibited. Therefore, the operator needs to periodically check the seal member. However, in order to check the seal member, it takes a lot of time and work.

  Then, an object of this invention is to provide the pump installation which can perform the inspection of a sealing member easily. An object of this invention is to provide the inspection method of the pump installation which can perform the inspection of a sealing member easily.

  The first aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted in a pump installation hole provided on the floor surface of the pump chamber, and an installation projecting from the outer periphery of the pump A pump base comprising a fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body disposed radially inside the fixed base, and A flexible base including a flange portion extending from the upper end of the main body portion to the outside in the radial direction of the main body portion, and an annular upper seal member disposed in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body portion And a lower seal member, a fluid supply hole formed in any one of the flexible base and the fixed base and capable of supplying pressurized fluid to a space between the upper seal member and the lower seal member Characterized in that it comprises a.

  The second aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted in a pump installation hole provided on the floor surface of the pump chamber, and an installation projecting from the outer periphery of the pump A pump base comprising a fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body disposed radially inside the fixed base, and A flexible base including a flange portion extending from the upper end of the main body portion to the outside in the radial direction of the main body portion, and an annular upper seal member disposed in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body portion And a lower seal member, an annular expansion seal disposed above the upper seal member and sealing a gap between the flange portion and the fixed base, and the flexible base and the fixed base. Re is formed either on one, and the space in the pressurized fluid between the upper seal member and the expansion seal is characterized in that it comprises a fluid supply hole capable of supplying.

In a preferred aspect, the pump equipment is attached to the fluid supply pipe, the fluid supply source for supplying the pressurized fluid, the fluid supply pipe connected to the fluid supply hole and the fluid supply source, and the fluid supply And a pressure gauge for measuring the pressure of the pressurized fluid passing through the pipe.
In a preferred aspect, the pump facility includes a leakage inspection device that is disposed in the suction water tank and inspects leakage of pressurized fluid supplied through the fluid supply hole.
In a preferred aspect, the pressurized fluid is a mixed fluid in which a liquid and a fluorescent material are mixed, and the leakage inspection device includes an ultraviolet irradiation device that irradiates ultraviolet rays toward the lower seal member, and the ultraviolet rays An image pickup apparatus that picks up an image of an irradiated region and a display device that is electrically connected to the image pickup apparatus and displays an image picked up by the image pickup apparatus.

  The third aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump installation hole provided on the floor surface of the pump chamber, and an installation projecting from the outer periphery of the pump A pump base comprising a fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body disposed radially inside the fixed base, and A flexible base including a flange portion extending from the upper end of the main body portion to the outside in the radial direction of the main body portion, and an annular upper seal member disposed in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body portion And a lower seal member, and a fluid supply hole formed in the mounting portion and capable of supplying pressurized fluid to a space between the pump installation hole and a suspension pipe suspended in the suction water tank. It is characterized by.

  The fourth aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted in a pump installation hole provided on the floor surface of the pump chamber, and an installation protruding from the outer periphery of the pump A pump base comprising a fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body disposed radially inside the fixed base, and A flexible base including a flange portion extending from the upper end of the main body portion to the outside in the radial direction of the main body portion, and an annular upper seal member disposed in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body portion And a lower seal member, and an elasticity check device for checking the elasticity of the upper seal member and the lower seal member.

In a preferred aspect, the elastic inspection device is disposed outside the fixed base, and is provided with a vibration member that applies vibration to the upper seal member and the lower seal member via the fixed base, and inside the main body. A vibration sensor that is disposed and detects vibration applied by the vibration member; and a vibration monitoring device that is connected to the vibration sensor and that monitors changes in vibration of the upper seal member and the lower seal member. It is characterized by being.
In a preferred aspect, the vibration monitoring device analyzes a vibration waveform acquired from the vibration sensor, and based on the analysis result of the vibration waveform, at least one of the upper seal member and the lower seal member has reached the replacement time. It is judged that it is.

  The fifth aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted in a pump installation hole provided on the floor surface of the pump chamber, and an installation protruding from the outer periphery of the pump A fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body disposed radially inside the fixed base, and the main body Connecting a fluid supply pipe to a fluid supply hole formed in any one of a flexible base including a flange portion extending radially outward of the main body from the upper end of the body, and the fluid supply pipe and the fluid supply Supplying a pressurized fluid to a space between an annular upper seal member and a lower seal member disposed in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body through the hole; Mounting on fluid supply pipe Was based on the value of the pressure gauge, characterized in that it comprises a step of checking the leakage of the pressurized fluid.

  A sixth aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted in a pump installation hole provided on the floor surface of the pump chamber, and an installation projecting from the outer periphery of the pump A fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body disposed radially inside the fixed base, and the main body A step of connecting a fluid supply pipe to a fluid supply hole formed in any one of a flexible base comprising a flange portion extending radially outward of the main body from the upper end of the main body, the inner peripheral surface and the main body Of the annular upper seal member and the lower seal member arranged in the vertical direction between the outer peripheral surface of the upper seal member, the annular expansion seal arranged above the upper seal member is expanded to expand the flange portion and the Fixed base Sealing a gap between the upper seal member and the expansion seal through the fluid supply hole and the fluid supply pipe, and supplying the pressurized fluid to the fluid supply pipe. And a step of checking leakage of the pressurized fluid based on a value of the attached pressure gauge.

  In a preferred embodiment, the pressurized fluid is a mixed fluid in which a liquid and a fluorescent material are mixed, and a step of arranging an ultraviolet irradiation device and an imaging device in the suction water tank, and ultraviolet rays using the ultraviolet irradiation device. Using the step of irradiating the lower seal member, the step of imaging the irradiation region irradiated with ultraviolet rays using the imaging device, and the display device displaying the image captured by the imaging device, And a step of checking leakage of the mixed fluid.

  The seventh aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted in a pump installation hole provided on the floor surface of the pump chamber, and an installation protruding from the outer periphery of the pump A fixed base having an inner peripheral surface exposed from the pump mounting hole, a cylindrical main body portion that can be disposed radially inside the fixed base, and the main body A flexible base comprising a flange portion extending radially outward of the main body from the upper end of the main body, and an annular upper surface disposed in the vertical direction between the inner peripheral surface and the outer peripheral surface of the main body Of the seal member and the lower seal member, a step of raising the water level of the suction water tank to the lower side of the lower seal member, and a suspension formed in the attachment portion and suspended in the pump and the suction water tank With lower pipe Supplying a pressurized fluid to a space between the pump installation hole and the suspension pipe through a fluid supply hole communicating with the space of the fluid and a fluid supply pipe connected to the fluid supply hole; and the fluid supply pipe And a step of checking the leakage of the fluid based on the value of the pressure gauge connected to.

  The eighth aspect includes a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted in a pump installation hole provided on the floor surface of the pump chamber, and an installation protruding from the outer periphery of the pump A fixed base having an inner peripheral surface exposed from the pump mounting hole, a cylindrical main body portion that can be disposed radially inside the fixed base, and the main body A flexible base comprising a flange portion extending radially outward of the main body from the upper end of the main body, and an annular upper surface disposed in the vertical direction between the inner peripheral surface and the outer peripheral surface of the main body A step of applying vibration to the seal member and the lower seal member; a step of detecting vibration applied to the upper seal member and the lower seal member; and the detected upper seal member and the lower seal member. Based on the vibration, characterized in that it comprises a step of determining at least one replacement timing of the upper seal member and the lower seal member.

According to the first aspect and the fifth aspect, the operator can supply the fluid to the space between the upper seal member and the lower seal member through the fluid supply hole, so that the upper seal member and the lower seal are provided. The member can be easily inspected.
According to the second and sixth aspects, the operator supplies the upper seal member and the lower seal member by supplying fluid to the space between the upper seal member and the expansion seal through the fluid supply hole. Can be easily checked.
According to the third aspect and the seventh aspect, the operator can supply the upper seal member and the lower seal member by supplying the fluid to the space between the pump installation hole and the suspension pipe through the fluid supply hole. Can be checked easily.
According to the fourth aspect and the eighth aspect, the operator can easily check the upper seal member and the lower seal member by applying vibration to the upper seal member and the lower seal member.

It is the schematic of one Embodiment of pump installation. It is an expanded sectional view showing a fixed base and a flexible base. It is a figure which shows the fluid supply pipe | tube provided in the flexible base. It is a figure which shows the filler with which the 1st seal space was filled. It is a figure which shows the fluid supply pipe | tube provided in the fixed base. It is a figure which shows the expansion seal provided in the flexible base. It is a figure which shows the expansion seal after expansion | swelling. It is a figure which shows the fluid supply pipe | tube provided in the fixed base. It is a figure which shows the pump installation provided with the leakage inspection apparatus. It is a figure which shows the fluid supply pipe | tube provided in the communicating hole of the attachment flange. It is a figure which shows the annular space pressurized by the pressurized fluid. It is a figure which shows an elasticity inspection apparatus. It is a figure which shows the vibration monitoring apparatus of an elasticity inspection apparatus. It is a figure which shows the processing flow of a vibration monitoring apparatus. It is a figure which shows the change of a vibration frequency. It is a figure which shows other embodiment of a pump installation. It is the figure seen from the A line direction of FIG. It is a perspective view of a hanging jig. It is a figure which shows the pump raised by the raising apparatus. It is a figure which shows other embodiment of a raising apparatus. It is a figure which shows the arrangement | positioning relationship of an attachment and a some jack apparatus. It is a figure which shows other embodiment of an attachment. It is a figure which shows the flexible base pushed up by the jack apparatus. It is a figure which shows other embodiment of a jack apparatus. It is a figure which shows other embodiment of a raising apparatus. It is a figure which shows the pump raised by the chain block. It is a figure which shows other embodiment of a raising apparatus. It is a perspective view which shows a frame structure. It is a figure which shows other embodiment of a pump installation. It is a perspective view of a cylindrical spacer and a connecting rod. It is a figure which shows the state by which the cylindrical spacer was pushed down. It is a figure which shows a mode that an operator replaces | exchanges a sealing member.

  Embodiments of the present invention will be described below with reference to the drawings. Note that, in the drawings described below, the same or corresponding components are denoted by the same reference numerals, and redundant description is omitted. In a plurality of embodiments described below, the configuration of one embodiment that is not particularly described is the same as that of the other embodiments, and thus a duplicate description thereof is omitted.

  FIG. 1 is a schematic view of an embodiment of a pump facility. The pump equipment includes a suction water tank 90, a pump chamber 100 in which the suction water tank 90 exists below, a vertical pump 30 inserted in a pump installation hole 103 provided in the floor surface 101 of the pump chamber 100, and a vertical pump 30 The mounting part 50 protruded from the outer periphery and the drive device (speed reducer) 39 which drives the vertical shaft pump 30 are provided.

  Hereinafter, in this specification, the vertical shaft pump 30 may be simply referred to as a pump 30. The pump 30 includes a suspension pipe 31 suspended in the suction water tank 90, a pump bowl 32 connected to the suspension pipe 31, a suction bell mouth 33 into which the liquid in the suction water tank 90 is sucked, and a suspension pipe 31. A rotating shaft 34 disposed inside the impeller 37 and an impeller 37 fixed to the rotating shaft 34 are provided.

  The lower end of the rotating shaft 34 extending in the vertical direction is supported by an unillustrated underwater bearing, and the upper end of the rotating shaft 34 is connected to a driving machine 39 installed on a driving machine base (reduction gear base) 39a. Yes. The rotating shaft 34 is supported by a bearing (not shown) (for example, an outer bearing and / or an underwater bearing). The impeller 37 is accommodated in a pump casing composed of a pump bowl 32 and a suction bell mouth 33. The suspension pipe 31 extends downward through the pump installation hole 103.

  The suspension pipe 31 and the pump casing extend in parallel with the rotary shaft 34, and the rotary shaft 34 is connected to the drive shaft 40 of the drive machine 39 via a detachable coupling 86. The gantry 39a is located above the pump 30, and the drive device 39 is placed on the gantry 39a.

  The drive machine 39 is disposed in the drive machine room 110 above the pump room 100. The pump chamber 100 exists below the driving machine chamber 110, and the suction water tank 90 exists below the pump chamber 100. When the driving machine 39 is driven, the driving force is transmitted to the rotating shaft 34 and the impeller 37, and the rotating shaft 34 and the impeller 37 rotate. The suction bell mouth 33 is formed with a liquid suction port. The liquid in the suction water tank 90 is sucked from the suction port of the suction bell mouth 33 by the rotation of the impeller 37 and transferred to the outside of the pump facility through the suspension pipe 31.

  The attachment portion 50 has a ring shape protruding from the outer periphery of the upper portion of the suspension pipe 31. The pump 30 is installed by installing the mounting portion 50 on an annular fixed base 62 fixed to the floor surface 101 via an annular flexible base 60. The attachment portion 50 is attached to the flexible base 60. Hereinafter, the structure of the flexible base 60 and the structure of the fixed base 62 will be described with reference to the drawings.

  FIG. 2 is an enlarged cross-sectional view showing the fixed base 62 and the flexible base 60. As shown in FIG. 2, the pump facility includes a fixed base 62 having an upper surface 62 a that is exposed and embedded in the floor surface 101 of the pump chamber 100 and an inner peripheral surface 62 b that is exposed and embedded in the pump installation hole 103. ing. The cross section of the fixed base 62 has a U-shape, but the cross section of the fixed base 62 is not limited to this embodiment. An inner peripheral surface 62 b of the fixed base 62 is a seal surface that is sealed by an upper seal member 75 </ b> A and a lower seal member 75 </ b> B, which will be described later, and constitutes a part of the pump installation hole 103.

  The pump facility further includes a flexible base 60 having a cylindrical main body portion 60a and a flange portion 60b extending outward in the radial direction of the main body portion 60a from the upper end of the main body portion 60a. The flexible base 60 may be referred to as a floating base, a movable base, or an elastic ring holder. The flexible base 60 (more specifically, the flange portion 60 b) is disposed between the attachment portion 50 and the fixed base 62. In the initial installation of the pump 30, the suspension pipe 31, the flexible base 60, and the fixed base 62 are concentrically arranged by the initial installation adjustment.

  In the present embodiment, an adjusting plate 66 for adjusting the relative height of the pump 30 with respect to the floor surface 101 is interposed between the lower surface of the flange portion 60 b of the flexible base 60 and the upper surface 62 a of the fixed base 62. ing. In FIG. 2, the adjustment plate 66 is exaggerated for easy understanding of the drawing, but the thickness of the adjustment plate 66 is several millimeters. Note that any material, shape, and thickness of the adjustment plate 66 can be used. As an example, various metals such as stainless steel are used. Further, by using a vibration-proof rubber having a function of reducing the amount of vibration transmission as the adjustment plate 66, the adjustment plate 66 can also reduce the transmission of the vibration of the pump to the civil engineering frame or the building.

  An annular seal groove 61 is formed on the outer peripheral surface of the main body portion 60 a of the flexible base 60, and an annular upper seal member 75 </ b> A such as an O-ring and a lower seal member 75 </ b> B are attached to the seal groove 61. The upper seal member 75A and the lower seal member 75B may be referred to as elastic rings, respectively. Hereinafter, in the present specification, the upper seal member 75A and the lower seal member 75B may be collectively referred to as a seal member 75.

  The upper seal member 75 </ b> A and the lower seal member 75 </ b> B are disposed in the vertical direction between the outer peripheral surface of the main body portion 60 a of the flexible base 60 and the inner peripheral surface 62 b of the fixed base (or base) 62. And the leakage of liquid from between the fixed base 62 can be prevented. In other words, the seal member 75 can maintain the water tightness of the pump installation hole 103. Therefore, even if the outer peripheral surface of the main body portion 60a and the inner peripheral surface 62b are not parallel to each other when the pump 30 is tilted due to the unequal subsidence of the pump 30 and the pump 30 is returned to the horizontal state, Only by changing the amount, the water tightness between the flexible base 60 and the fixed base 62 by the seal member 75 is maintained.

  In the present embodiment, two seal members 75 are arranged, but the number of seal members 75 is not limited to this embodiment. In one embodiment, three or more seal members 75 may be disposed (in order to increase reliability, a plurality of seal members 75 are preferable). The number of seal grooves 61 corresponds to the number of seal members 75.

  The flange portion 60 b of the flexible base 60 has a protruding portion 65 that extends to the outside of the mounting portion 50. The overhanging portion 65 is exposed from the mounting portion 50. The mounting portion 50 includes a mounting flange 50 a that extends in the horizontal direction, that is, parallel to the flange portion 60 b of the flexible base 60.

  FIG. 3 is a view showing a fluid supply pipe 250 provided in the flexible base 60. As shown in FIG. 3, a fluid supply hole 60 c that opens at a position between the upper seal member 75 </ b> A and the lower seal member 75 </ b> B is formed in the main body portion 60 a of the flexible base 60. The fluid supply hole 60c extends in the horizontal direction, that is, parallel to the flange portion 60b. The fluid supply hole 60c opens in a space (first seal space) S1 between the upper seal member 75A and the lower seal member 75B and an annular space SP between the suspension pipe 31 and the pump installation hole 103. Yes. The first seal space S1 and the annular space SP can communicate with each other through the fluid supply hole 60c.

  The fluid supply hole 60c is a through hole that can supply pressurized fluid to the first seal space S1. The first seal space S1 is formed by the upper seal member 75A, the lower seal member 75B, the flexible base 60, and the fixed base 62, and has an annular shape arranged concentrically with the rotary shaft 34 and the suspension pipe 31. have. The annular space SP is a space that constitutes a part of the space of the suction water tank 90, and includes a space between the main body portion 60 a of the flexible base 60 and the suspension pipe 31.

  As shown in FIG. 3, the mounting flange 50a has a communication hole 50b extending in the vertical direction, that is, in the direction perpendicular to the flange portion 60b. The fluid supply pipe 250 extends from the pump chamber 100 to the suction water tank 90 through the communication hole 50b. One end of the fluid supply pipe 250 is connected to the fluid supply hole 60 c, and the other end is connected to a fluid supply source 251 disposed in the pump chamber 100.

  The fluid supply source 251 is a device for supplying pressurized fluid. An example of a pressurized fluid is a pressurized gas or a pressurized liquid. When the pressurized fluid is a pressurized gas, the fluid supply source 251 is a compressor, and when the pressurized fluid is a pressurized liquid, the fluid supply source 251 is a combination of a pump and a tank that stores liquid.

  Connected to the fluid supply pipe 250 are a pressure gauge 252 that measures the pressure of the pressurized fluid that passes through the fluid supply pipe 250, and an open / close valve 253 that opens and closes the flow path of the fluid supply pipe 250. The pressure gauge 252 and the on-off valve 253 are disposed in the pump chamber 100. The on-off valve 253 is disposed adjacent to the fluid supply source 251, and the pressure gauge 252 is disposed adjacent to the on-off valve 253. In a state where the on-off valve 253 is opened, the fluid supply source 251 supplies the pressurized fluid to the first seal space S1 through the fluid supply pipe 250 by its operation.

  In the present embodiment, the operator can easily check the upper seal member 75A and the lower seal member 75B by supplying pressurized fluid to the first seal space S1 through the fluid supply hole 60c. In the pump facility at the time of initial installation, the structures constituting the pump facility are not inclined due to unequal (unequal) settlement, and the relative height of the pump 30 with respect to the floor surface 101 is not adjusted by the adjusting plate 66. Therefore, both the upper seal member 75A and the lower seal member 75B sufficiently exhibit their functions (seal function).

  When the operator drives the driving device 39 with the on-off valve 253 opened, the pressurized fluid is supplied to the first seal space S1. The operator can check the seal member 75 based on the presence or absence of leakage of the pressurized fluid supplied to the first seal space S1.

  More specifically, the operator checks the leakage of the pressurized fluid based on the value measured by the pressure gauge 252 (value indicating the pressure of the pressurized fluid). The operator monitors the pressure of the pressurized fluid supplied to the first seal space S1 via the pressure gauge 252 for a certain time, and determines whether or not the pressure of the pressurized fluid in the first seal space S1 is maintained. Confirm. When a predetermined time elapses while the measurement value of the pressure gauge 252 is maintained at a predetermined value, the operator determines that the first seal space S1 is normally sealed. In this case, each of the upper seal member 75A and the lower seal member 75B sufficiently exhibits the original function (seal function), and the water tightness of the pump installation hole 31, that is, between the flexible base 60 and the fixed base 62. Maintains water tightness between them.

  The pressure of the pressurized fluid supplied to the first seal space S1 is determined based on the pressure resistance value of the seal member 75. The pressure resistance value of the seal member 75 is determined based on factors such as the water level of the suction water tank 90. Since the pressure of the pressurized fluid supplied to the first seal space S1 is a pressure corresponding to the pressure resistance value of the seal member 75, the seal member 75 can be inspected with high accuracy and the minimum number of times required.

  When the measured value of the pressure gauge 252 does not reach the predetermined value even after the predetermined time has elapsed, or when the measured value decreases beyond the predetermined fluctuation range, the operator is in the normal state of the first seal space S1. Judged not sealed. In this case, since at least one of the upper seal member 75A and the lower seal member 75B does not exhibit the original function, the operator does not perform such an original function, that is, a deteriorated seal member. Need to be replaced. The replacement method of the seal member will be described in an embodiment of a pump facility maintenance method described later.

  When the watertightness between the flexible base 60 and the fixed base 62 cannot be maintained due to the deteriorated seal member, the operator injects a filler into the first seal space S1 instead of replacing the seal member. Also good.

  FIG. 4 is a view showing the filler FM filled in the first seal space S1. As shown in FIG. 4, the operator may inject the filler FM into the first seal space S1 through the fluid supply pipe 250 and fill the first seal space S1 with the filler FM. As the filler FM, a filler having a property of being elastically cured (changed from a liquid state to an individual) over time is applied. In one embodiment, the filler FM is “RTV silicone rubber” manufactured by Shin-Etsu Silicone.

  Since the hardened filler FM has elasticity, the filler FM filled in the first seal space S1 can maintain water tightness between the flexible base 60 and the fixed base 62. Therefore, although there is a problem with at least one of the water tightness of the upper seal member 75A and the lower seal member 75B, the filler FM is used for the next pump even when the problematic seal member cannot be immediately replaced. The watertightness can be maintained until 30 is pulled up.

  In the embodiment shown in FIG. 4, the filler FM is injected into the first seal space S1 through the fluid supply pipe 250 (see FIGS. 1 and 3). In one embodiment, the fluid supply pipe 250 may be connected to a branch pipe (not shown) to which a filler supply source (not shown) is connected. In this case, the filler FM is injected into the first seal space S1 through the branch pipe and the downstream flow path of the fluid supply pipe 250. In another embodiment, the filler FM may be injected into the first seal space S1 through a pipe different from the fluid supply pipe 250.

  In the above-described embodiment, one embodiment of the configuration for supplying the pressurized fluid to the first seal space S1 has been described, but this configuration is not limited to the embodiment shown in FIG. FIG. 5 is a view showing a fluid supply pipe 260 provided on the fixed base 62. As shown in FIG. 5, the fixed base 62 is formed with a fluid supply hole 62c that opens at a position between the upper seal member 75A and the lower seal member 75B. A fluid supply hole 102 a that communicates with the fluid supply hole 62 c is formed in the floor structure 102 that constitutes the floor surface 101 and the pump installation hole 103. The fluid supply hole 62c and the fluid supply hole 102a communicating with each other can communicate with the first seal space S1 and the space of the pump chamber 100.

  In the embodiment shown in FIG. 5, one end of the fluid supply pipe 260 is connected to the fluid supply hole 102 a and the other end is connected to the fluid supply source 251. In the embodiment shown in FIG. 5, the mounting flange 50a of the mounting portion 50 does not have the communication hole 50b. The fluid supply source 251 communicates with the first seal space S1 through the fluid supply pipe 260, the fluid supply hole 102a, and the fluid supply hole 60c. In one embodiment, the fluid supply hole 62c may open at the upper surface 62a and the inner peripheral surface 62b. In this case, the floor structure 102 does not have the fluid supply hole 102a. The fluid supply hole 62 c opens at the upper surface 62 a located outside the flange portion 60 b of the flexible base 60 and is connected to the fluid supply pipe 260.

  6 is a view showing the expansion seal 275 provided on the flexible base 60, and FIG. 7 is a view showing the expansion seal 275 after expansion. As shown in FIGS. 6 and 7, an expansion seal 275 that expands by supplying pressurized gas is attached to the flange portion 60 b of the flexible base 60. In one embodiment, the expansion seal 275 may be attached to the upper surface 62 a of the fixed base 62.

  The expansion seal 275 is a ring member in which an annular space is formed, and is also called an inflatable seal. An annular groove disposed concentrically with the suspension pipe 31 of the pump 30 is formed on the lower surface of the flange portion 60b, and the expansion seal 275 is attached to the annular groove. The expansion seal 275 is disposed concentrically with the suspension pipe 31 (and the flexible base 60). The lower surface of the flange portion 60b is a surface facing the upper surface 62a of the fixed base 62, and the lower surface and the upper surface 62a of the flange portion 60b are parallel to each other.

  The expansion seal 275 is disposed above the upper seal member 75 </ b> A and is disposed inside the adjustment plate 66. A gas introduction pipe 276 is connected to the expansion seal 275, and this gas introduction pipe 276 is connected to a gas supply source (compressor) (not shown). In one embodiment, the gas inlet tube 276 may be connected to the fluid source 251. An open / close valve 277 for opening and closing the flow path is attached to the gas introduction pipe 276.

  When the gas supply source is operated with the on-off valve 277 opened, the pressurized gas is introduced into the expansion seal 275 through the gas introduction pipe 276. As a result, the expansion seal 275 attached to the annular groove of the flange portion 60 b expands in a direction (downward) close to the upper surface 62 a of the fixed base 62 and closely contacts the upper surface 62 a of the fixed base 62. In this way, the expansion seal 275 seals the gap between the upper surface 62a of the fixed base 62 and the flange portion 60b of the flexible base 60.

  A fluid supply hole 60d that opens at a position above the upper seal member 75A is formed in the main body 60a of the flexible base 60. The fluid supply hole 60d opens in a space (second seal space) S2 and an annular space SP between the upper seal member 75A and the expansion seal 275. The second seal space S2 and the annular space SP can communicate with each other through the fluid supply hole 60d. The fluid supply hole 60d is a through hole capable of supplying pressurized fluid to the second seal space S2. The second seal space S2 is formed by the upper seal member 75A, the expansion seal 275, the flexible base 60, and the fixed base 62. A fluid supply pipe 270 is connected to the fluid supply hole 60d.

  Structures (civil engineering structures) constituting the pump equipment may be inclined due to unequal (unequal) settlement. In this case, the operator adjusts the relative height of the pump 30 with respect to the floor surface 101 by the adjustment plate 66 and corrects the inclination of the pump 30. As a result, the pump 30 assumes a normal posture. However, since the civil engineering structure is inclined with respect to the pump 30, any one of the upper seal member 75A and the lower seal member 75B may not sufficiently perform its function.

  In the embodiment shown in FIGS. 6 and 7, even if any one of the upper seal member 75 </ b> A and the lower seal member 75 </ b> B may not perform its function sufficiently, the operator can use the flexible base 60 and the fixed base. It can be confirmed whether or not the water tightness between the two is maintained.

  First, the operator drives a gas supply source (or a fluid supply source 251 as a compressor) (not shown) with the on-off valve 277 opened, and supplies pressurized gas to the expansion seal 275 through the gas introduction pipe 276. The operator opens the on-off valve 253 and supplies the pressurized fluid from the fluid supply source 251 to the second seal space S2 through the fluid supply pipe 270. Thereafter, the operator monitors the pressure of the pressurized fluid supplied to the second seal space S2 via the pressure gauge 252 by a method similar to the method described above, and the pressure of the pressurized fluid in the second seal space S2. Confirm whether or not is held.

  The expansion seal 275 disposed above the upper seal member 75A can seal the gap between the flange portion 60b of the flexible base 60 and the upper surface 62a of the fixed base 62 by supplying pressurized gas. The seal 275 can play the same role as the seal member 75.

  As an example, even if the upper seal member 75A does not sufficiently perform its function, the expansion seal 275 and the lower seal member 75B can be used as long as the lower seal member 75B sufficiently performs the function. The watertightness between the flexible base 60 and the fixed base 62 can be maintained. As another example, even if the lower seal member 75B does not sufficiently perform its function, the expansion seal 275 and the upper seal member 75A can be used as long as the upper seal member 75A performs its function sufficiently. Can maintain watertightness between the flexible base 60 and the fixed base 62. Thus, the expansion seal 275 can also be used as a watertight (airtight) measure at the time of emergency.

  FIG. 8 is a view showing a fluid supply pipe 290 provided on the fixed base 62. As shown in FIG. 8, the fixed base 62 may have a fluid supply hole 62e through which pressurized fluid can be supplied to the second seal space S2. The fluid supply hole 62e opens in the second seal space S2 and the pump chamber 100, and the second seal space S2 and the space in the pump chamber 100 can communicate with each other through the fluid supply hole 62e. A fluid supply pipe 290 is connected to the fluid supply hole 62e. In the embodiment shown in FIG. 8, the mounting flange 50a of the mounting portion 50 does not have the communication hole 50b.

  FIG. 9 is a view showing a pump facility provided with the leakage inspection device 300. In FIG. 9, the configuration that is not particularly described is the same as the configuration of the embodiment illustrated in FIG. 3, and thus redundant description thereof is omitted. As shown in FIG. 9, the pump facility includes a leakage inspection device 300 that is arranged in the suction water tank 90 and inspects leakage of the pressurized fluid supplied through the fluid supply hole 60c. In FIG. 9, the leakage inspection apparatus 300 is provided in the pump facility according to the embodiment shown in FIG. 3, but may be provided in the pump facility according to the embodiment shown in FIG. 6 (and FIG. 7).

  The leakage inspection device 300 is disposed below the lower seal member 75B, and an ultraviolet irradiation device 301 that irradiates ultraviolet rays toward the lower seal member 75B, an imaging device 302 that images an irradiation region irradiated with the ultraviolet rays, And a display device 303 that is electrically connected to the imaging device 302 and displays an image captured by the imaging device 302.

  An example of the ultraviolet irradiation device 301 is a black light, and an example of the imaging device 302 is an endoscope. As shown in FIG. 9, the ultraviolet irradiation device 301 and the imaging device 302 are arranged in the suction water tank 90, and the display device 303 is arranged in the pump chamber 100. The operator can access the display device 303 arranged in the pump chamber 100.

  In one embodiment, the imaging device 302 may extend to the suction tank 90 through a communication hole 50b formed in the mounting flange 50a of the mounting portion 50, and in another embodiment, the imaging device 302 is formed on the mounting flange 50a. It may extend to the suction tank 90 through the leaked inspection hole (not shown). The leakage inspection hole is a hole different from the communication hole 50b and has a size that allows the imaging device 302 to pass therethrough.

  The means for arranging the ultraviolet irradiation device 301 in the suction water tank 90 is not particularly limited. In one embodiment, an operator may attach a fixing rod (not shown) to the ultraviolet irradiation device 301 and suspend the fixing rod through the communication hole 50b or the leakage inspection hole into the suction water tank 90. In another embodiment, the ultraviolet irradiation device 301 may be fixed to the inner surface of the pump installation hole 103 or the outer peripheral surface of the suspension pipe 31.

  In the embodiment shown in FIG. 9, the pressurized fluid supplied to the first seal space S1 is a mixed fluid in which a liquid and a fluorescent material are mixed, and the fluid supply source 251 is a combination of a pump and a tank. When the mixed fluid is supplied to the first seal space S1 through the fluid supply pipe 250, the first seal space S1 is filled with the mixed fluid. At this time, the ultraviolet irradiation device 301 irradiates ultraviolet rays toward the lower seal member 75B so that the ultraviolet rays are irradiated onto the irradiation region including the lower seal member 75B. The imaging device 302 images the irradiation area. An operator monitors an image captured by the imaging device 302 through a display device 303 disposed in the pump chamber 100.

  When the lower seal member 75B does not have its original function, the mixed fluid supplied to the first seal space S1 is a gap between the lower seal member 75B and the inner peripheral surface 62b of the fixed base 62 and / or It leaks from the gap between the lower seal member 75B and the flexible base 60. The leaked mixed fluid emits light by the ultraviolet rays irradiated from the ultraviolet irradiation device 301 and is imaged by the imaging device 302. The operator can confirm the water tightness of the lower seal member 75B by monitoring the captured image. According to the embodiment shown in FIG. 9, the operator can easily confirm the water tightness of the lower seal member 75B even when the suction water tank 90 is dark.

  In one embodiment, the pressurized fluid may be a colored liquid rather than a fluid mixture of liquid and phosphor. In this case, the ultraviolet irradiation device 301 may be omitted depending on the visual recognition state of the suction water tank 90.

  When the upper seal member 75A does not have its original function, the mixed fluid supplied to the first seal space S1 is a gap between the upper seal member 75A and the inner peripheral surface 62b of the fixed base 62 and / or the upper seal. It leaks from the gap between the member 75A and the flexible base 60. By continuing the leakage of the mixed fluid, the water level of the mixed fluid gradually rises and leaks into the pump chamber 100 from the space between the flange portion 60b of the flexible base 60 and the upper surface 62a of the fixed base 62. That is, the mixed fluid leaks through the gap between the adjustment plates 66 adjacent to each other. Therefore, the operator can directly confirm the leakage of the mixed fluid visually.

  FIG. 10 is a view showing the fluid supply pipe 280 provided in the communication hole 50b of the mounting flange 50a. In the present embodiment, the communication hole 50b to which the fluid supply pipe 280 is connected is a fluid supply hole that can supply pressurized fluid to the annular space SP.

  When the water level of the suction water tank 90 can be raised, the operator raises the water level of the suction water tank 90 to a predetermined height and supplies the fluid to the communication hole (fluid supply hole) 50 b formed in the mounting portion 50. Tube 280 may be connected to check for leaks of pressurized fluid.

  FIG. 11 is a view showing the annular space SP pressurized by the pressurized fluid. The fluid supply source 251 (see FIG. 10) supplies a pressurized fluid to the annular space SP through the fluid supply pipe 280 by driving thereof, and pressurizes the annular space SP (see the shaded area in FIG. 11). In this embodiment, the pressurized fluid is a pressurized gas, and the fluid supply source 251 is a compressor.

  In the embodiment shown in FIGS. 10 and 11, the operator raises the water level of the suction water tank 90 to a position between the pump installation hole 103 and the suspension pipe 31. Therefore, the annular space SP includes the pump installation hole 103, the suspension pipe 31, the main body portion 60a of the flexible base 60, the inner peripheral surface 62b of the fixed base 62, the mounting flange 50a of the mounting portion 50, the lower seal member 75B, and the suction. It is formed by the liquid level in the water tank 90.

  The means for raising the water level of the suction water tank 90 is not particularly limited. In one embodiment, a pump (not shown) arranged outside the suction water tank 90 may transfer liquid outside the suction water tank 90 to the suction water tank 90. In another embodiment, when the suction water tank 90 is connected to a tributary, the operator may close the tributary gate provided in the tributary and raise the water level of the tributary connected to the main river. The water level of the suction tank 90 rises as the water level of the tributary rises.

  The operator checks the leakage of the pressurized fluid based on the measurement value of the pressure gauge 252 (see FIG. 10). When at least one of the upper seal member 75A and the lower seal member 75B does not perform the original function, the pressurized fluid leaks through the seal member that does not perform the original function. The measured value is a numerical value different from the predetermined value. Therefore, in this case, the operator can determine that at least one of the upper seal member 75A and the lower seal member 75B does not perform the original function.

  In one embodiment, the operator can use a space (a first seal space S1, a second seal space S2, or an annular space SP) in which the gas that is lighter than air and visible, such as colored smoke, is visible in the above-described embodiment. ). Even in this case, the operator can confirm the water tightness of the seal member 75 based on the gas leakage.

  In many cases, natural rubber or synthetic rubber is used as the material of the upper seal member 75A and the lower seal member 75B. However, rubber deteriorates with age due to oxidation by oxygen in the air and hardens. Therefore, the pump facility may include an elasticity checking device 310 configured to check the curing state of the seal member 75. The elasticity checking device 310 can determine the deterioration status of the seal member 75. Therefore, the elasticity checking device 310 can determine that the seal member 75 is about to be replaced.

  FIG. 12 is a view showing the elasticity checking device 310. As shown in FIG. 12, the pump facility includes an elasticity checker 310 that applies vibration to the upper seal member 75A and the lower seal member 75B to check the elasticity of the upper seal member 75A and the lower seal member 75B.

  The elasticity checking device 310 is disposed outside the fixed base 62, and the vibration member 311 that applies vibrations to the upper seal member 75A and the lower seal member 75B via the fixed base 62, and the inside of the main body portion 60a of the flexible base 60 are provided. And a vibration sensor (acceleration sensor) 312 that detects vibration applied by the vibration member 311 and a vibration that is connected to the vibration sensor 312 and monitors changes in vibration of the upper seal member 75A and the lower seal member 75B. And a monitoring device 320.

  In the present embodiment, the fixed base 62 is an annular block body fixed on the floor surface 101, and the outer peripheral surface 62 d of the fixed base 62 is exposed from the floor surface 101. The inner peripheral surface 62 b of the fixed base 62 located on the opposite side of the outer peripheral surface 62 d is exposed from the pump installation hole 103. The cross section of the fixed base 62 has a rectangular shape, and the entire fixed base 62 is exposed from the floor surface 101. The vibration member 311 is configured to be able to strike the fixed base 62 and is disposed adjacent to the outer peripheral surface 62 d of the fixed base 62. The vibration member 311 is, for example, an impulse hammer.

  The vibration member 311 and the vibration sensor 312 are opposed to each other with the flexible base 60, the seal member 75, and the fixed base 62 interposed therebetween. In other words, the vibration member 311 is disposed on the radially outer side of the seal member 75, and the vibration sensor 312 is disposed on the radially inner side of the seal member 75.

  The vibration sensor 312 is attached to the inner peripheral surface of the main body 60 a of the flexible base 60. The vibration sensor 312 and the vibration monitoring device 320 are electrically connected to each other by an electric wire 313. The electric wire 313 passes through the communication hole 50b formed in the mounting flange 50a of the mounting portion 50. In one embodiment, a sensor mounting hole (not shown) different from the communication hole 50b may be formed in the mounting flange 50a, and the electric wire 313 may pass through the sensor mounting hole.

  The vibration monitoring device 320 is configured to acquire the vibration detected by the vibration sensor 312 (more specifically, a vibration waveform indicating a temporal change in vibration) and analyze the vibration waveform. Further, the vibration monitoring device 320 is configured to determine that at least one of the upper seal member 75A and the lower seal member 75B has reached the replacement time based on the analysis result of the vibration waveform. Hereinafter, the configuration of the vibration monitoring device 320 will be described.

  FIG. 13 is a diagram showing a vibration monitoring device 320 of the elasticity checking device 310. As shown in FIG. 13, the vibration monitoring device 320 includes an analysis unit (FFT analyzer) 321 that analyzes the elasticity of the seal member 75 and a display unit 324 that displays the results analyzed by the analysis unit 321.

  The analysis unit 321 performs Fourier transform (or fast Fourier transform) on the vibration (vibration data, in other words, vibration waveform) of the seal member 75 detected by the vibration sensor 312 to obtain a vibration value ( A calculation unit 326 for calculating (vibration level) is provided. The analysis unit 321 includes a comparison unit 322 that compares a reference vibration value serving as a reference for determining a change in vibration of the seal member 75 with a measured vibration value measured when the pump facility is inspected. Further, the analysis unit 321 determines that at least one of the upper seal member 75A and the lower seal member 75B has reached the replacement time when the difference between the measured vibration value and the reference vibration value is greater than a predetermined threshold value. The determination part 323 to perform is provided.

  The reference vibration value is the vibration value of the upper seal member 75A and the lower seal member 75B at the initial installation of the pump equipment, and the measured vibration value is measured at the time of inspection of the pump equipment, that is, after the reference vibration value is measured. Is the current vibration value. The reference vibration value and the measured vibration value are calculated by the calculation unit 326 based on the vibration data detected by the vibration sensor 312 and stored in a storage unit (not shown) of the elasticity inspection device 310.

  FIG. 14 is a diagram showing a processing flow of the vibration monitoring device 320. The operator strikes the fixed base 62 using the vibration member 311 in the pump equipment at the initial installation (execution of the vibration test). The vibration of the fixed base 62 is transmitted to the seal member 75, and as a result, the seal member 75 also vibrates. The vibration sensor 312 detects the vibration of the seal member 75 and sends vibration data related to the vibration of the seal member 75 to the calculation unit 326 of the vibration monitoring device 320.

  The pump equipment is inspected every predetermined period (for example, 10 years). Since the seal member 75 is hardened due to aging, the spring constant at the time of inspection changes from the spring constant at the time of installation. Therefore, the vibration sensor 312 detects the current vibration of the seal member 75 different from the vibration of the seal member 75 at the time of initial installation, and sends the vibration data to the calculation unit 326.

  As shown in step S <b> 101 of FIG. 14, the calculation unit 326 calculates a reference vibration value at the time of initial installation, that is, based on vibration data of a new seal member 75. Thereafter, the calculation unit 326 calculates a measured vibration value based on vibration data of the seal member 75 at the time of checking the pump facility (see step S102 in FIG. 14).

  Next, the calculation unit 326 calculates a difference between the reference vibration value and the measured vibration value (see step S103 in FIG. 14), and the comparison unit 322 compares the calculated difference with a predetermined threshold value (in FIG. 14). (See step S104). The predetermined threshold value is determined based on an element related to the elasticity of the elastic ring that has reached the replacement time (for example, a spring constant). This threshold value is stored in the storage unit.

  When the difference is larger than the predetermined threshold (see “YES” in step S104 in FIG. 14), the determination unit 323 determines that at least one of the upper seal member 75A and the lower seal member 75B has reached the replacement time. Judgment is made (see step S105 in FIG. 14), and the result is displayed on the display unit 324. The display unit 324 may issue an alarm. When the difference is smaller than the predetermined threshold value (see “NO” in step S104 in FIG. 14), the determination unit 323 determines that both the upper seal member 75A and the lower seal member 75B do not need to be replaced, The vibration monitoring device 320 ends the process.

  In the above-described embodiment, the configuration example of the analysis unit 321 that compares the measured vibration value and the reference vibration value has been described, but the configuration of the analysis unit 321 is not limited to this embodiment. In one embodiment, in the analysis unit 321, at least one of the upper seal member 75 </ b> A and the lower seal member 75 </ b> B has reached the replacement time based on the change in the vibration frequency obtained by analyzing the vibration waveform (frequency analysis). You may judge.

  FIG. 15 is a diagram showing changes in vibration frequency. The analysis unit 321 calculates a vibration value for each frequency band by performing frequency analysis. As a result, a correlation as shown in the graph of FIG. 15 is derived. In the graph of FIG. 15, the horizontal axis indicates the frequency [Hz], and the vertical axis indicates the vibration value (vibration level) [dB].

  As shown in FIG. 15, the frequency characteristic at the time of initial installation (see the graph on the left side of FIG. 15) is different from the frequency characteristic after aging (see the graph on the right side of FIG. 15). Therefore, the analysis unit 321 may determine the replacement time of the seal member 75 based on the change in the frequency characteristic. For example, the frequency indicating the peak in the initial frequency characteristic (peak frequency) is different from the frequency indicating the peak in the frequency characteristic after aging (peak frequency). The analysis unit 321 may determine the replacement timing of the seal member 75 based on the change between the initial peak frequency and the peak frequency after aging.

  In the embodiment described above, the inspection method of the pump facility, more specifically, the inspection method of the upper seal member 75A and the lower seal member 75B has been described. However, in the following embodiment, the maintenance management method of the pump facility, Specifically, a maintenance method (inspection and replacement) of the upper seal member 75A and the lower seal member 75B will be described.

  Since the seal member that does not perform its original function cannot reliably seal the gap between the flexible base 60 and the fixed base 62, such a seal member ensures the water tightness of the pump installation hole 103. I can't hold it. Therefore, the operator needs to replace the seal member that does not perform its original function.

  However, when exchanging the seal member, the operator needs to pull up the pump after removing the drive unit (reduction gear) disposed above the pump and the mount on which the drive unit is placed. The operator needs to replace the seal member with the pump pulled up. However, in order to pull up the pump after removing the drive unit and the gantry, it takes a lot of labor and work, so the operator cannot easily replace the seal member.

  Therefore, in the following embodiments, a pump facility and a pump facility maintenance management method that can easily replace the seal member 75 without removing the drive unit 39 and the mount 39a will be described. In the following embodiments, configurations that are not particularly described are the same as the configurations of the above-described embodiments, and thus redundant description thereof is omitted. The pump equipment according to the following embodiments may have the configuration in the embodiment shown in FIGS. 1 to 14. That is, the following embodiments and the embodiments shown in FIGS. 1 to 14 may be combined.

  FIG. 16 is a diagram showing another embodiment of the pump equipment. As shown in FIG. 16, the pump facility includes a detachable coupling 86 that connects the rotary shaft 34 and the drive shaft 40 of the drive shaft 39, and the lower seal member 75 </ b> B with the coupling 86 removed. A lifting device 400 that lifts the flexible base 60 together with the pump 30 until it is exposed is provided. The coupling 86 is, for example, a foam flex coupling, and connects the drive shaft 40 and the rotary shaft 34 at a position above the pump 30.

  The lifting device 400 passes through the plurality of through holes 41 formed in the mount 39 a on which the driving machine 39 is installed, and has a plurality of wires 401 connected to the flexible base 60, and a plurality of lifting devices 400 at positions above the driving machine 39. A suspension jig 402 connected to the wire 401, and a crane 403 disposed above the suspension jig 402 and connected to the suspension jig 402. The hanging jig 402 and the crane 403 are disposed in the driving machine room 110. In one embodiment, the crane 403 is an overhead crane attached to the ceiling of the drive room 110.

  FIG. 17 is a view as seen from the direction of line A in FIG. In the present embodiment, four through holes 41 are formed, but the number of through holes 41 is not limited to this embodiment. In one embodiment, the number of through holes 41 may be three or more. The plurality of through holes 41 are arranged at equal intervals along the circumferential direction of the drive shaft 40. In the present embodiment, the four through holes 41 are evenly arranged around the drive machine 39. That is, the through holes 41 that pass through the centers of the drive shaft 40 and the rotation shaft 34 and face each other across the center axis CL that extends in parallel with the drive shaft 40 and the rotation shaft 34 are arranged symmetrically with respect to the center axis CL. Each through hole 41 extends parallel to the central axis CL.

  The number of wires 401 corresponds to the number of through holes 41. Therefore, in this embodiment, four wires 401 are provided for the four through holes 41. Each wire 401 passes through each through hole 41, and connects the flexible base 60 and the crane 403 via a hanging jig 402.

  As shown in FIG. 16, a connecting tool 405 such as an eyebolt is fixed to the overhanging portion 65 constituting a part of the flange portion 60 b of the flexible base 60. In one embodiment, the coupler 405 may be fixed to the mounting flange 50a of the mounting portion 50. In other embodiments, the connector 405 may be secured to both the flange portion 60b and the mounting flange 50a. The number of connectors 405 corresponds to the number of wires 401. One end of each wire 401 is connected to each connector 405, and the other end is connected to a hanging jig 402.

  FIG. 18 is a perspective view of the hanging jig 402. As shown in FIG. 18, the suspension jig 402 includes a plurality of suspension ropes 410, a base member 411 to which the plurality of suspension ropes 410 are attached, and a plurality of hooks 412 attached to the lower surface of the base member 411. I have. The other end of each wire 401 is connected to each hook 412. The number of hooks 412 corresponds to the number of wires 401.

  In this embodiment, the base member 411 has a quadrangular frame structure, but the structure of the base member 411 is not limited to this embodiment. In one embodiment, the base member 411 may have a circular frame structure. In another embodiment, the base member 411 may have a polygonal frame structure corresponding to the number of hooks 412.

  The plurality of hooks 412 are arranged on the base member 411 at equal intervals. In the present embodiment, the four hooks 412 are attached to the four corners of the base member 411. The hooks 412 facing each other across the central axis CL are arranged symmetrically with respect to the central axis CL, and are arranged on a diagonal line perpendicular to the central axis CL.

  In the present embodiment, four suspension ropes 410 are provided, but the number of suspension ropes 410 is not limited to the present embodiment. In the present embodiment, the four suspension ropes 410 are attached to the four corners of the base member 411. In one embodiment, the number of suspension ropes 410 may correspond to the number of corners of the base member 411. The plurality of suspension ropes 410 are connected to the crane 403 on a vertical line passing through the center of gravity of the base member 411 (on the central axis CL in this embodiment).

  FIG. 19 is a view showing the pump 30 raised by the raising device 400. The operator connects the wire 401 that passes through the through hole 41 of the mount 39 a to the connector 405 and the hook 412 of the hanging jig 402, and in this state, connects the hanging jig 402 to the crane 403. The operator removes the coupling 86 in a state where the pump 30 (more specifically, the flexible base 60) is installed, and then lifts the flexible base 60 together with the pump 30 by the crane 403.

  A discharge curved cylinder 82 having an elbow shape is connected to the upper end of the suspension pipe 31, and the discharge curved cylinder 82 is connected to a discharge pipe 170 through a pipe joint 150. Therefore, the operator removes the pipe joint 150 and separates the discharge curved cylinder 82 and the discharge pipe 170 before raising the pump 30.

  With the coupling 86 removed and the discharge curved cylinder 82 separated from the discharge pipe 170, the operator operates the crane 403 to raise the pump 30. In the present embodiment, since the coupling 86 is removed, a gap in which the pump 30 can rise is formed between the pump 30 and the mount 39a. The size of the gap, that is, the distance between the pump 30 and the mount 39a is larger than the distance between the flange portion 60b of the flexible base 60 and the lower seal member 75B. Therefore, the operator can raise the flexible base 60 together with the pump 30 until the lower seal member 75B is completely exposed (for example, about 300 to 700 mm).

  Since the lower seal member 75B is disposed below the upper seal member 75A, when the lower seal member 75B is exposed, the upper seal member 75A is naturally exposed. Therefore, the operator can perform inspection of the seal member 75 and replacement of the seal member 75 as necessary, with the lower seal member 75B exposed.

  According to the present embodiment, the operator can raise the flexible base 60 together with the pump 30 by the lifting device 400 without removing the drive machine 39 and the mount 39a. Therefore, the maintenance of the pump equipment does not take time and the work period can be shortened.

  FIG. 20 is a view showing another embodiment of the lifting device 400. Since the configuration of the present embodiment that is not specifically described is the same as the configuration described above, the redundant description is omitted. As shown in FIG. 20, the lifting device 400 is provided with an attachment 420 attached to any one of the attachment flange 50 a of the attachment portion 50 and the flange portion 60 b of the flexible base 60, and is disposed below the attachment 420. And a plurality of jack devices 421 for raising the pump 30 through the.

  FIG. 21 is a diagram showing an arrangement relationship between the attachment 420 and a plurality of jack devices 421. In the embodiment shown in FIG. 21, the attachment 420 includes a plurality of plate-like parts 420 a arranged at equal intervals along the circumferential direction of the pump 30 (more specifically, the suspension pipe 31). In the embodiment shown in FIG. 21, four plate-like parts 420a are provided, but the number of plate-like parts 420a is not limited to this embodiment. In one embodiment, at least three plate-like parts 420a are provided. The number of jack devices 421 corresponds to the number of plate-like parts 420a. In the present embodiment, the plate-like part 420 a is fixed to the mounting flange 50 a of the mounting portion 50, but may be fixed to the flange portion 60 b of the flexible base 60.

  FIG. 22 is a view showing another embodiment of the attachment 420. As shown in FIG. 22, the attachment 420 may be a divided part 420 b arranged over the entire circumference of the mounting portion 50 or the entire circumference of the flange portion 60 b of the flexible base 60. In the embodiment shown in FIG. 22, the divided part 420b has a split structure, and the combination of the two divided parts 420b has an annular shape.

  As shown in FIG. 20, the jack device 421 is disposed below the plate-like part 420 a of the attachment 420, more specifically, between the plate-like part 420 a and the floor surface 101. FIG. 23 is a view showing the flexible base 60 pushed up by the jack device 421. As shown in FIG. 23, when the operator operates the jack device 421, the jack device 421 pushes up the plate-like part 420a. The flexible base 60 fixed to the mounting portion 50 is pushed up by the jack device 421 together with the plate-like part 420a. The jack device 421 raises the pump 30 until the lower seal member 75B is exposed.

  If the pump 30 is lifted while being tilted, the pump 30 may collide with the pump installation hole 103. Therefore, in order to prevent the pump 30 from being lifted in the inclined state, it is desirable that the pump 30 is pushed up by the plurality of jack devices 421 as simultaneously as possible. In one embodiment, the number of workers corresponding to the number of jack devices 421 may perform jack-up work simultaneously. In another embodiment, the operator may determine the allowable range of the inclination of the pump 30 in advance, and perform jack-up work little by little so that the inclination is within the allowable range.

  The jack device 421 shown in FIGS. 20 and 23 is abstractly drawn to make the drawings easy to see. The structure of the jack device 421 is not particularly limited. FIG. 24 is a view showing another embodiment of the jack device 421. As shown in FIG. 24, the jack device 421 may be a jack device with a claw provided with a claw portion 421 a inserted between the plate-like part 420 a of the attachment 420 and the floor surface 101.

  FIG. 25 is a view showing still another embodiment of the lifting device 400. Since the configuration of the present embodiment that is not specifically described is the same as the configuration of the above-described embodiment, the redundant description is omitted. As shown in FIG. 25, the lifting device 400 includes a plurality of chain blocks 430 that connect the flexible base 60 and the lower surface of the mount 39a. In the present embodiment, the connection tool 405 is not only fixed to the flange portion 60b of the flexible base 60, but the connection tool 431 is also fixed to the lower surface of the mount 39a. The number of chain blocks 430 corresponds to the number of connectors 405 and the number of connectors 431. Each chain block 430 is connected to each connector 405 and each connector 431.

  FIG. 26 is a view showing the pump 30 raised by the chain block 430. Similar to the embodiment shown in FIGS. 16 to 19, the operator operates the chain block 430 in a state where the coupling 86 is removed and the discharge curved cylinder 82 is separated from the discharge pipe 170, and the lower seal member 75 </ b> B is operated. Pump 30 is raised until it is exposed.

  FIG. 27 is a view showing still another embodiment of the lifting device 400. As shown in FIG. 27, the lifting device 400 includes a chain block 430 and a frame structure 440. In the present embodiment, the configuration that is not specifically described is the same as that of the embodiment shown in FIGS. 25 and 26, and thus a duplicate description is omitted.

  FIG. 28 is a perspective view showing the frame structure 440. As shown in FIGS. 27 and 28, the frame structure 440 is disposed in the pump chamber 100. The frame structure 440 includes a ceiling portion 441 located above the attachment portion 50 and the flexible base 60, and a support portion 442 that supports the ceiling portion 441. The frame structure 440 is made of a strong member such as steel, for example. The ceiling portion 441 extends in parallel with the gantry 39a and is disposed adjacent to the gantry 39a. The support portion 442 extends in the vertical direction from the floor surface 101 toward the mount 39a.

  As shown in FIG. 28, the ceiling portion 441 includes a frame portion 441a supported by the support portion 442, and a beam portion 441b fixed to the frame portion 441a. In the present embodiment, the connector 431 is fixed to the lower surface of the beam portion 441b.

  In the embodiment shown in FIGS. 27 and 28, it is not necessary to directly fix the connector 431 to the lower surface of the mount 39a. Depending on the type of pump equipment, the connector 431 may not be fixed to the lower surface of the gantry 39a. According to the present embodiment, since the connector 431 is fixed to the frame structure 440, the operator installs the frame structure 440 in the existing pump equipment and via the connector 431 of the frame structure 440. The chain block 430 is connected to the ceiling portion 441 of the frame structure 440. Thus, the operator does not need to fix the connection tool 431 to the lower surface of the mount 39a by using the frame structure 440 to which the chain block 430 can be connected.

  FIG. 29 is a view showing still another embodiment of the pump equipment. As shown in FIG. 29, the pump facility includes a cylindrical spacer 450 disposed between the fixed base 62 and the flexible base 60, and an outer peripheral surface 450 a of the cylindrical spacer 450 and an inner peripheral surface 62 b of the fixed base 62. The annular first upper seal member 455A and the first lower seal member 455B, the annular first annular member disposed between the inner peripheral surface 450b of the cylindrical spacer 450 and the outer peripheral surface of the main body 60a of the flexible base 60. The second upper seal member 456A and the second lower seal member 456B are connected to the cylindrical spacer 450, and the cylindrical spacer 450 is moved (lowered) until the first upper seal member 455A and the second upper seal member 456A are exposed. And a connecting rod 458.

  FIG. 30 is a perspective view of the cylindrical spacer 450 and the connecting rod 458. As shown in FIGS. 29 and 30, the cylindrical spacer 450 has a cylindrical shape and is disposed concentrically with the suspension pipe 31. The main body 60 a of the flexible base 60 is disposed on the radially inner side of the cylindrical spacer 450, and the inner peripheral surface 62 b of the fixed base 62 is disposed on the radially outer side of the cylindrical spacer 450.

  On the outer peripheral surface 450a of the cylindrical spacer 450, an upper annular groove 451 and a lower annular groove 452 arranged in the vertical direction are formed. The first upper seal member 455A is mounted in the upper annular groove 451, and the first lower seal member 455B is mounted in the lower annular groove 452. Similarly, an upper annular groove 453 and a lower annular groove 454 arranged in the vertical direction are formed on the inner peripheral surface 450 b of the cylindrical spacer 450. The second upper seal member 456A is attached to the upper annular groove 453, and the second lower seal member 456B is attached to the lower annular groove 454.

  Hereinafter, in the present specification, the first upper seal member 455A and the first lower seal member 455B may be collectively referred to as a first seal member 455. The second upper seal member 456A and the second lower seal member 456B may be collectively referred to as a second seal member 456.

  The cylindrical spacer 450 is inserted into the inner peripheral surface 62b of the fixed base 62 with the first seal member 455 and the second seal member 456 being mounted. Thereafter, the flexible base 60 is inserted into the inner peripheral surface 450 b of the cylindrical spacer 450. In order to smoothly insert the first seal member 455 into the fixed base 62, the operator passes the lubricant oil through the fluid supply pipe 260 (see FIG. 5) with the outer peripheral surface 450 a of the cylindrical spacer 450 and the inner peripheral surface 62 b of the fixed base 62. You may inject between. In one embodiment, the fluid supply pipe 260 may be connected to a branch pipe (not shown) to which a lubricating oil supply source (not shown) is connected. Lubricating oil is injected through the branch pipe and the downstream flow path of the fluid supply pipe 260.

  In order to smoothly insert the flexible base 60 into the inner peripheral surface 450 b of the cylindrical spacer 450, an operator uses a fluid supply pipe 250 (see FIG. 3) to supply lubricating oil to the inner peripheral surface 450 b of the cylindrical spacer 450 and the flexible base 60. You may inject | pour between the outer peripheral surfaces of the main-body part 60a. In one embodiment, the fluid supply pipe 250 may be connected to a branch pipe (not shown) to which a lubricating oil supply source (not shown) is connected. The lubricating oil is injected through the branch pipe and the downstream flow path of the fluid supply pipe 250.

  You may combine embodiment shown in FIG. 29 and embodiment shown in FIG. 3 and FIG. In this case, the operator can execute a watertight test on the first seal member 455 and the second seal member 456.

  As shown in FIG. 30, the plurality of connecting rods 458 are attached to the upper end surface of the cylindrical spacer 450. The plurality of connecting rods 458 are arranged at equal intervals along the circumferential direction of the cylindrical spacer 450. In the embodiment shown in FIG. 30, six connecting rods 458 are provided, but the number of connecting rods 458 is not limited to this embodiment. Each connecting rod 458 extends from the upper end surface of the cylindrical spacer 450 in the suction water tank 90 toward the pump chamber 100 and protrudes from the mounting flange 50 a of the mounting portion 50. Therefore, a part of the connecting rod 458 exists in the pump chamber 100.

  FIG. 31 is a view showing a state in which the cylindrical spacer 450 is pushed down. At the time of maintenance of the pump facility, when an operator in the pump chamber 100 pushes in the connecting rod 458, the cylindrical spacer 450 attached to the connecting rod 458 is pushed down. The connecting rod 458 has a length that allows the cylindrical spacer 450 to be moved until each of the first upper seal member 455A and the second upper seal member 456A is exposed. Therefore, when the operator pushes in the connecting rod 458, each of the first upper seal member 455A and the second upper seal member 456A is exposed from the gap between the flexible base 60 and the fixed base 62.

  FIG. 32 is a diagram illustrating a state where the operator replaces the seal member. In FIG. 32, the worker is given a reference sign WK. As shown in FIG. 32, when there is no liquid in the suction water tank 90 and the worker WK can easily approach the cylindrical spacer 450, a scaffold 460 may be provided in the suction water tank 90. . The worker WK can access the cylindrical spacer 450 by climbing a scaffold 460 installed so as to be adjacent to the pump 30.

  The cylindrical spacer 450 is pushed down until the first upper seal member 455A and the second upper seal member 456A are exposed from the gap between the flexible base 60 and the fixed base 62. Therefore, the operator WK can easily check all of the first seal member 455 and the second seal member 455 attached to the cylindrical spacer 450 without removing the drive unit 39 and the mount 39a. The seal member can be exchanged accordingly. If necessary, the cylindrical spacer 450 may be pushed down until the first upper seal member 455A is exposed from the pump installation hole 103.

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

30 Vertical shaft pump 31 Suspension pipe 32 Pump bowl 33 Suction bell mouth 34 Rotating shaft 37 Impeller 39 Drive unit (reduction gear)
39a Mounting frame 40 Drive shaft 41 Through hole 50 Mounting portion 50a Mounting flange 50b Communication hole 60 Flexible base 60a Body portion 60b Flange portion 60c Fluid supply hole 60d Fluid supply hole 61 Seal groove 62 Fixed base 62a Upper surface 62b Inner peripheral surface 62c Fluid supply hole 62d Peripheral surface 62e Fluid supply hole 65 Overhang portion 66 Adjustment plate 75A Upper seal member 75B Lower seal member 82 Discharge curved cylinder 86 Coupling 90 Suction water tank 100 Pump chamber 101 Floor surface 102 Floor structure 102a Fluid supply hole 103 Pump installation hole 110 Drive chamber 150 Pipe joint 170 Discharge pipe 250 Fluid supply pipe 251 Fluid supply source 252 Pressure gauge 253 On-off valve 260 Fluid supply pipe 270 Fluid supply pipe 275 Expansion seal 276 Gas introduction pipe 277 On-off valve 280 Fluid supply pipe 290 Fluid supply pipe 300 Leakage inspection device 301 Ultraviolet irradiation device 302 Imaging device 303 Display device 310 Elasticity inspection device 311 Vibration member 312 Vibration sensor 313 Electric line 320 Vibration monitoring device 321 Analysis unit 322 Comparison unit 323 Determination unit 324 Display unit 326 Calculation unit 400 Lifting device 401 Wire 402 Suspension tool 403 Crane 405 Connection tool 410 Suspension rope 411 Base member 412 Hook 420 Attachment 420a Plate part 420b Split part 421 Jack device 421a Claw part 431 Connection tool 440 Frame structure 441 Ceiling part 441a Frame part 441b Beam part 442 Support Part 450 cylindrical spacer 450a outer peripheral surface 450b inner peripheral surface 455A first upper seal member 455B first lower seal member 456A second upper seal member 456B second lower seal member 458 connecting rod

Claims (14)

A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump mounting hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump Equipment,
The pump equipment is
A fixed base having an inner peripheral surface exposed from the pump installation hole;
A flexible base comprising a cylindrical main body disposed radially inside the fixed base, and a flange extending radially outward from the upper end of the main body;
An annular upper seal member and a lower seal member arranged in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body,
A fluid supply hole formed in any one of the flexible base and the fixed base and capable of supplying pressurized fluid to a space between the upper seal member and the lower seal member; Features pumping equipment. A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump mounting hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump Equipment,
The pump equipment is
A fixed base having an inner peripheral surface exposed from the pump installation hole;
A flexible base comprising a cylindrical main body disposed radially inside the fixed base, and a flange extending radially outward from the upper end of the main body;
An annular upper seal member and a lower seal member arranged in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body,
An annular expansion seal disposed above the upper seal member and sealing a gap between the flange portion and the fixed base;
A fluid supply hole formed in any one of the flexible base and the fixed base and capable of supplying pressurized fluid to a space between the upper seal member and the expansion seal is provided. Pump equipment to do. The pump equipment is
A fluid supply source for supplying the pressurized fluid;
A fluid supply pipe connected to the fluid supply hole and the fluid supply source;
The pump equipment according to claim 1, further comprising: a pressure gauge attached to the fluid supply pipe and measuring the pressure of the pressurized fluid passing through the fluid supply pipe.   3. The pump according to claim 1, wherein the pump facility includes a leakage inspection device that is disposed in the suction water tank and inspects leakage of the pressurized fluid supplied through the fluid supply hole. Facility. The pressurized fluid is a mixed fluid in which a liquid and a fluorescent material are mixed,
The leakage inspection device is
An ultraviolet irradiation device for irradiating ultraviolet rays toward the lower seal member;
An imaging device for imaging the irradiation region irradiated with the ultraviolet rays;
The pump equipment according to claim 4, further comprising a display device that is electrically connected to the imaging device and displays an image captured by the imaging device. A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump mounting hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump Equipment,
The pump equipment is
A fixed base having an inner peripheral surface exposed from the pump installation hole;
A flexible base comprising a cylindrical main body disposed radially inside the fixed base, and a flange extending radially outward from the upper end of the main body;
An annular upper seal member and a lower seal member arranged in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body,
A fluid supply hole formed in the attachment portion and capable of supplying pressurized fluid to a space between the pump installation hole and a suspension pipe suspended in the suction water tank is provided. Pump equipment. A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump mounting hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump Equipment,
The pump equipment is
A fixed base having an inner peripheral surface exposed from the pump installation hole;
A flexible base comprising a cylindrical main body disposed radially inside the fixed base, and a flange extending radially outward from the upper end of the main body;
An annular upper seal member and a lower seal member arranged in a vertical direction between the inner peripheral surface and the outer peripheral surface of the main body,
A pump facility comprising: an elasticity checking device for checking elasticity of the upper seal member and the lower seal member. The elasticity checker is
An excitation member that is arranged outside the fixed base and applies vibrations to the upper seal member and the lower seal member via the fixed base;
A vibration sensor that is disposed inside the main body and detects vibration applied by the vibration member;
The pump equipment according to claim 7, further comprising: a vibration monitoring device connected to the vibration sensor and monitoring a change in vibration of the upper seal member and the lower seal member. The vibration monitoring device includes:
Analyzing the vibration waveform obtained from the vibration sensor,
9. The pump equipment according to claim 8, wherein it is determined that at least one of the upper seal member and the lower seal member has reached the replacement time based on the analysis result of the vibration waveform. A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump mounting hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump An inspection method for equipment,
A fixed base having an inner peripheral surface exposed from the pump mounting hole, a cylindrical main body disposed radially inside the fixed base, and a flange extending radially outward from the upper end of the main body Connecting a fluid supply pipe to a fluid supply hole formed in any one of a flexible base comprising a portion;
Through the fluid supply pipe and the fluid supply hole, a pressure is applied to the space between the annular upper seal member and the lower seal member arranged in the vertical direction between the inner peripheral surface and the outer peripheral surface of the main body. Supplying a fluid;
And a step of checking leakage of the pressurized fluid based on a value of a pressure gauge attached to the fluid supply pipe. A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump mounting hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump An inspection method for equipment,
A fixed base having an inner peripheral surface exposed from the pump mounting hole, a cylindrical main body disposed radially inside the fixed base, and a flange extending radially outward from the upper end of the main body Connecting a fluid supply pipe to a fluid supply hole formed in any one of a flexible base comprising a portion;
Of the annular upper seal member and the lower seal member disposed in the vertical direction between the inner peripheral surface and the outer peripheral surface of the main body, the annular expansion seal disposed above the upper seal member is expanded. Letting the gap between the flange part and the fixed base be sealed,
Supplying pressurized fluid to the space between the upper seal member and the expansion seal through the fluid supply hole and the fluid supply pipe;
And a step of checking leakage of the pressurized fluid based on a value of a pressure gauge attached to the fluid supply pipe. The pressurized fluid is a mixed fluid in which a liquid and a fluorescent material are mixed,
Arranging the ultraviolet irradiation device and the imaging device in the suction water tank;
Irradiating ultraviolet rays toward the lower seal member using the ultraviolet irradiation device;
Using the imaging device, imaging the irradiation area irradiated with ultraviolet rays,
The method according to claim 10, further comprising a step of checking leakage of the mixed fluid using a display device that displays an image captured by the imaging device. A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump mounting hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump An inspection method for equipment,
A fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body portion that can be disposed radially inside the fixed base, and a flange that extends radially outward from the upper end of the main body portion A step of preparing a flexible base comprising a portion;
Of the annular upper seal member and the lower seal member arranged in the vertical direction between the inner peripheral surface and the outer peripheral surface of the main body portion, the water level of the suction water tank is raised below the lower seal member. Process,
The pump is formed through a fluid supply hole formed in the mounting portion and communicating with a space between the pump and a suspension pipe suspended in the suction water tank, and a fluid supply pipe connected to the fluid supply hole. Supplying pressurized fluid to the space between the installation hole and the suspension pipe;
And checking for fluid leakage based on the value of a pressure gauge connected to the fluid supply pipe. A pump comprising a suction water tank, a pump chamber in which the suction water tank exists below, a pump inserted into a pump installation hole provided on the floor surface of the pump chamber, and a mounting portion protruding from the outer periphery of the pump An inspection method for equipment,
A fixed base having an inner peripheral surface exposed from the pump installation hole, a cylindrical main body portion that can be disposed radially inside the fixed base, and a flange that extends radially outward from the upper end of the main body portion A step of preparing a flexible base comprising a portion;
Applying vibration to the annular upper seal member and the lower seal member disposed in the vertical direction between the inner peripheral surface and the outer peripheral surface of the main body portion;
Detecting vibration applied to the upper seal member and the lower seal member;
And determining a replacement timing of at least one of the upper seal member and the lower seal member based on the detected vibrations of the upper seal member and the lower seal member. .

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