A large axial flow pump that can be remotely monitored and easily maintained based on the Internet of Things

Abstract

The present application discloses a large axial flow pump that can be remotely monitored and maintained based on the Internet of Things, including a main pipe unit, a detection pipe unit, a water inlet pipe unit, a water inlet horn unit, a rotating shaft, and a motor driving the rotating shaft, wherein a rotating blade unit and a guide vane unit are installed at the rotating shaft. The detection pipe of the axial flow pump of the present application has an installation through hole, and the detection unit can be installed at the installation through hole, so that the axial flow pump can switch between a pumping state and a detection state, and can perform remote wireless communication, so as to better realize remote monitoring of the axial flow pump, and the axial flow pump of the present application adopts a split connection structure, so that maintenance is more convenient.

Description

Technical Field

[0001] The present application relates to the field of water pumps, and in particular to a large axial flow pump that can be remotely monitored and easily maintained based on the Internet of Things. Background Art

[0002] Large axial flow pumps can be widely used in the transportation of water resources in rivers, lakes and rivers due to their excellent pumping flux. And with the development of Internet of Things technology, existing water pumps have gradually integrated Internet of Things technology on the basis of their wide distribution to achieve remote management, thereby achieving distributed installation, but centralized management has greatly improved the monitoring and maintenance capabilities of multiple water pumps. However, the existing management of multiple water pumps based on the Internet of Things often only has the function of remote opening and closing when remotely controlling the water pumps, but this single opening and closing function is obviously unable to meet the needs of managing multiple axial flow pumps. In actual use scenarios, since the axial flow pump has rotors and guide vanes inside, the use scenarios of axial flow pumps in different regions are diverse and complex. Therefore, in fact, the internal parts of the axial flow pump often need maintenance due to problems such as entanglement of water plants, collision of stones and debris, and corrosion of the paint surface. On the one hand, the existing axial flow pump is not convenient for maintenance of the internal part of the axial flow pump itself, and on the other hand, the networking of the Internet of Things itself does not have the above-mentioned monitoring function of the internal part of the axial flow pump. Summary of the invention

[0003] Purpose of the invention: In order to solve the above two problems, the present application discloses a large axial flow pump which can be remotely monitored and easily maintained based on the Internet of Things.

[0004] Technical solution: An axial flow pump includes a main pipe unit, a detection pipe unit, a water inlet pipe unit, a water inlet horn unit, a rotating shaft and a motor driving the rotating shaft, wherein a rotating blade unit and a guide vane unit are installed on the rotating shaft.

[0005] Furthermore, a water guide cone is installed at the end of the rotating shaft.

[0006] Furthermore, the main pipe unit, the detection pipe unit, the water inlet pipe unit and the water inlet horn unit are fixedly connected in sequence, and the main pipe unit includes a first main pipe flange, a first pipe portion connected to the first main pipe flange, a bent pipe portion connected to the first pipe portion, a second pipe portion connected to the bent pipe portion, and a second main pipe flange connected to the second pipe portion.

[0007] Furthermore, the detection tube unit includes a first detection tube flange, a detection tube connected to the first detection tube flange, and a second detection tube flange connected to the detection tube.

[0008] Furthermore, the water inlet pipe unit includes a first water inlet pipe flange, a water inlet pipe connected to the first water inlet pipe flange, and a second water inlet pipe flange connected to the water inlet pipe.

[0009] Furthermore, the water inlet pipe is provided with a plurality of first strip-shaped reinforcing ribs.

[0010] Furthermore, the water inlet horn unit includes a first water inlet horn flange, a water inlet horn connected to the first water inlet horn flange, and a second water inlet horn flange fixedly connected to the water inlet horn.

[0011] Furthermore, the rotating blade unit includes a rotating blade wheel installed on the rotating shaft and a plurality of rotating blades fixed to the rotating blade wheel; the guide vane unit includes a guide vane wheel installed on the rotating shaft and a plurality of guide vanes fixed to the guide vane wheel.

[0012] Furthermore, a fixing frame is fixed to the second tube portion, and the fixing frame includes a circular ring portion and two connecting straight rods, and a lower bearing is installed between the circular ring portion and the rotating shaft.

[0013] Furthermore, a protrusion fixedly connected to the bent pipe is fixed at the bent pipe, the rotating shaft passes through the protrusion, and an upper bearing is installed between the protrusion and the rotating shaft.

[0014] Furthermore, the top end of the rotating shaft is connected to the motor via a coupling.

[0015] Furthermore, a motor seat fixedly connected to the bent pipe and used for mounting the motor is installed at the bent pipe.

[0016] Furthermore, a shaft sealing unit is installed between the protruding portion and the rotating shaft.

[0017] Furthermore, the shaft sealing unit is a mechanical shaft seal or a packing shaft seal.

[0018] Furthermore, the water inlet pipe has two side openings, and a side cover unit is installed at the side opening. The top and bottom ends of the side opening are fixed with a first arc-shaped convex plate, and both sides of the side opening have a first strip-shaped convex plate. The side cover unit includes a curved cover plate, and the top and bottom ends of the curved cover plate are provided with a second curved convex plate, and both sides of the curved cover plate have a second strip-shaped convex plate.

[0019] Furthermore, the arc cover plate has a plurality of second strip-shaped reinforcing ribs.

[0020] Furthermore, sealing rings are sandwiched between the main pipe unit and the detection pipe unit, between the detection pipe unit and the water inlet pipe unit, and between the water inlet pipe unit and the water inlet horn unit.

[0021] Furthermore, a sealing unit is sandwiched between each side cover unit and the corresponding side opening.

[0022] Furthermore, the sealing unit includes two arc-shaped sealing gaskets and two strip-shaped sealing gaskets.

[0023] Furthermore, the two arc-shaped sealing pads and the two strip-shaped sealing pads of the sealing unit are rubber pads and are integrally formed.

[0024] Furthermore, it also includes a control unit and a wireless communication unit. The detection tube has an installation through hole. The detection tube is also connected to a fixing tube fixedly connected to the outer wall of the detection tube. A limiting ring is fixed to the end of the fixing tube. The outer wall of the detection tube is also connected to a limiting sleeve through an L-shaped frame. An annular airbag is installed in the limiting sleeve. An air pump for inflating the annular airbag is also installed at the L-shaped frame. When the annular airbag is in a filled state, one end of the annular airbag abuts against the limiting ring, and the other end abuts against the limiting plate. A detection unit is installed at the installation through hole. The detection unit includes a tube passing through the A rotating pin of a fixed tube and a limiting sleeve, a limiting plate fixedly connected to one end of the rotating pin, a mounting plate fixedly connected to the other end of the rotating pin, and a mounting box mounted on the mounting plate, a mounting rod fixed to the mounting plate, the mounting rod is hinged to a rotating rod through an elastic reset hinge component, a tail plate is fixed to the rotating rod, the mounting box has a mounting surface, a collection unit is mounted on the mounting surface, the collection unit includes a light source part and an image collection part; a rubber block is fixed to the inner side wall of the detection tube, the rubber block has a through hole passed by the rotating pin and an abutment plane that can abut against the mounting plate.

[0025] Furthermore, the installation box is made of engineering plastics.

[0026] Furthermore, the installation box has excellent sealing and waterproof properties.

[0027] In some embodiments, the mounting surface is provided with a transparent cover covering the collection unit. Preferably, the outer surface of the transparent cover is provided with a hydrophobic coating.

[0028] Therefore, the transparent cover can protect the acquisition unit, further increase the sealing and waterproof performance, and ensure the effect of image acquisition.

[0029] Furthermore, the inner side wall of the detection tube also has an abutment protrusion located above the mounting through hole and an abutment groove located below the mounting through hole, the abutment protrusion has an abutment arc surface, the abutment groove has two transition surfaces and an abutment surface located between the two transition surfaces and connected to the two transition surfaces.

[0030] Furthermore, the axial flow pump can be in a pumping state and a detection state. In the pumping state, the motor is turned on, the tail plate abuts the abutting curved surface, and the annular airbag is in a filled state; in the detection state, the motor is turned off, the tail plate abuts the abutting curved surface, and the annular airbag is in a filled state.

[0031] Furthermore, in the pumping state, the mounting rod and the rotating rod are in the same straight line.

[0032] Furthermore, the installation box includes two side planes and two mutually connected flow guiding arc surfaces, and one of the side planes is connected between each flow guiding arc surface and the installation surface.

[0033] Furthermore, the abutment groove has a drainage slope, and the drainage slope is connected to the abutment curved surface and the two transition curved surfaces.

[0034] Thereby, the upward water flow can more easily enter the abutting groove and impact the tail plate, thus forcing the tail plate to rotate upward.

[0035] Furthermore, when the axial flow pump is in a detection state, the angle between the plane where the mounting surface is located and the axis of the rotating shaft is between 60-85 degrees.

[0036] Furthermore, the end of the tail plate away from the rotating rod is semicircular.

[0037] Furthermore, the acquisition unit includes two light source parts and two image acquisition parts.

[0038] Furthermore, the installation box has an installation groove, and a counterweight block is installed in the installation groove.

[0039] Furthermore, the counterweight block and the mounting box are fixedly connected by bolts.

[0040] The counterweight thus ensures that the pivot pin rotates when it is required to rotate.

[0041] Furthermore, a plurality of abutment protrusions are fixed to the inner circumferential surface of the fixing tube, and the abutment protrusions include a hemispherical protrusion abutting against the rotating pin and a connecting block connecting the fixing tube and the hemispherical protrusions.

[0042] Furthermore, the plurality of abutment protrusions are distributed in two circles.

[0043] Furthermore, the rotating pin is in a hollow tubular shape, a control box is installed at the limiting plate, and the control unit and the wireless communication unit are installed in the control box.

[0044] Furthermore, the limiting plate has a threading hole communicating with the inner space of the rotating pin and the inner space of the installation box.

[0045] Thereby, an integrated and highly integrated installation of the control unit, the wireless communication unit and the detection unit is achieved.

[0046] Furthermore, a GPS unit is installed in the control box.

[0047] Therefore, for each axial flow, the installation position of the axial flow pump can be easily obtained. When the installation position of the axial flow pump changes, it is only necessary to update the GPS information to obtain the installation position of each axial flow pump.

[0048] In other embodiments, the control unit and the wireless communication unit may also be installed at other locations. The control unit and the wireless communication unit may be installed separately or integrated.

[0049] In some embodiments, the detection tube has a plurality of mounting through holes, and one of the detection units is installed in each mounting through hole.

[0050] Thus, multiple detection units can obtain a better perspective on the inside of the axial flow pump.

[0051] Furthermore, the number of the mounting through holes and the number of the detection units are both two, or both three.

[0052] Beneficial effects: The axial flow pump of the present application is installed with a split structure, so it is easy to install and maintain. During maintenance, the side cover can be opened for maintenance, and multiple components can be disassembled and installed in a split manner, which makes installation more convenient.

[0053] The axial flow pump of the present application can realize remote positioning, remote detection and remote control.

[0054] The axial flow pump of the present application can achieve, on the one hand, convenient detection of the interior of the axial flow pump, and, on the other hand, convenient protection of the detection unit when no detection is performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a schematic diagram of the axial flow pump after installation;

[0056] Figure 2 This is a schematic diagram of the axial flow pump after it is split;

[0057] Figure 3 This is a schematic diagram of the interior of the detection tube in the pumping state;

[0058] Figure 4 This is a schematic diagram of the interior of the detection tube in the detection state;

[0059] Figure 5 It is a schematic diagram of the detection tube unit when the detection unit is separated from the mounting through hole;

[0060] Figure 6 This is a schematic diagram of the detection tube unit from another angle when the detection unit is separated from the mounting through hole. DETAILED DESCRIPTION

[0061] Reference numerals: 1 main pipe unit; 1.1 first main pipe flange; 1.2 first pipe portion; 1.3 curved pipe portion; 1.4 second pipe portion; 1.5 second main pipe flange; 1.6 raised portion; 1.7 rotating shaft; 1.8.1 connecting straight rod; 1.8.2 annular portion; 1.8.3 lower bearing; 1.9 water guide cone; 1.10 rotating blade unit;

[0062] 2 Detection tube unit; 2.1 First detection tube flange; 2.2 Detection tube; 2.3 Second detection tube flange; 2.4 Abutment groove; 2.4.1 Transition curved surface; 2.4.2 Abutment curved surface; 2.4.3 Guide slope; 2.5 Abutment convex block; 2.6 Rubber block; 2.7 Fixed tube; 2.7.1 Limiting ring; 2.7.2 Abutment convex block;

[0063] 3 Water inlet pipe unit; 3.1 First water inlet pipe flange; 3.2 Second water inlet pipe flange; 3.3 Water inlet pipe; 3.4 First strip reinforcing rib; 3.5.1 Arc cover plate; 3.5.2 Second arc convex plate; 3.5.3 Second strip convex plate; 3.5.4 Second strip reinforcing rib; 3.6 Side opening; 3.6.1 First arc convex plate; 3.6.2 First strip convex plate;

[0064] 4 water inlet speaker unit; 4.1 first water inlet speaker flange; 4.2 water inlet speaker; 4.3 second water inlet speaker flange;

[0065] 5.1 Mounting plate; 5.1.1 Mounting rod; 5.2 Mounting box; 5.2.1 Flow guide arc surface; 5.2.2 Side plane; 5.2.3 Mounting surface; 5.3 Counterweight; 5.4 Collection unit; 5.4.1 Image collection unit; 5.4.2 Light source unit; 5.5 Tail plate;

[0066] 5.5.1 Rotating rod; 5.7 Rotating pin; 5.8 Limiting plate;

[0067] 6.1 L-shaped frame; 6.2 Limiting sleeve; 6.2.1 Air pump; 6.2.2 Annular air bag.

[0068] As shown in the figure: A large axial flow pump based on the Internet of Things that can be remotely monitored and is easy to maintain, includes a main pipe unit 1, a detection tube unit 2, a water inlet pipe unit 3, a water inlet horn unit 4, a rotating shaft and a motor that drives the rotating shaft, and a rotor blade unit 1.10 and a guide vane unit are installed at the rotating shaft 1.7. The main pipe unit 1, the detection tube unit 2, the water inlet pipe unit 3 and the water inlet horn unit 4 are fixedly connected in sequence, and the main pipe unit includes a first main pipe flange 1.1, a first pipe part 1.2 connected to the first main pipe flange 1.1, a curved pipe part 1.3 connected to the first pipe part 1.2, a second pipe part 1.4 connected to the curved pipe part 1.3, and a second main pipe flange 1.5 connected to the second pipe part 1.4; the detection tube unit 2 includes a first detection tube flange 2.1, a detection tube 2.2 connected to the first detection tube flange 2.1, and a second detection tube flange 2.3 connected to the detection tube 2.2; the water inlet pipe unit Element 3 includes a first water inlet pipe flange 3.1, a water inlet pipe 3.3 connected to the first water inlet pipe flange 3.1, and a second water inlet pipe flange 3.2 connected to the water inlet pipe 3.3; the water inlet horn unit 4 includes a first water inlet horn flange 4.1, a water inlet horn 4.2 connected to the first water inlet horn flange 4.1, and a second water inlet horn flange 4.3 fixedly connected to the water inlet horn 4.2; the vane unit 1.10 includes a vane wheel installed at the rotating shaft and a plurality of vanes fixed at the vane wheel; the guide vane unit includes a guide vane wheel installed at the rotating shaft and a plurality of guide vanes fixed at the guide vane wheel. A fixing frame is fixed at the second tube portion 1.4, and the fixing frame includes a circular ring portion 1.8.2 and two connecting straight rods 1.8.1, and a lower bearing 1.8.3 is installed between the circular ring portion 1.8.2 and the rotating shaft 1.7; a raised portion 1.6 fixedly connected to the curved pipe 1.3 is fixed at the curved pipe 1.3, and the rotating shaft 1.7 passes through the raised portion 1.6, and an upper bearing is installed between the raised portion 1.6 and the rotating shaft 1.7. The water inlet pipe 3.3 has two side openings 3.6, and a side cover unit is installed at the side opening 3.6. The top and bottom of the side opening 3.6 are fixed with a first arc-shaped convex plate 3.6.1, and both sides of the side opening 3.6 have a first strip-shaped convex plate 3.6.2. The side cover unit includes a curved cover plate 3.5.1, and the top and bottom of the curved cover plate 3.5.1 have a second arc-shaped convex plate 3.5.2, and both sides of the curved cover plate 3.5.1 have a second strip-shaped convex plate. A sealing ring is clamped between the main unit 1 and the detection tube unit 2, between the detection tube unit 2 and the water inlet pipe unit 3, and between the water inlet pipe unit 3 and the water inlet speaker unit 4; a sealing unit is clamped between each side cover unit and the corresponding side opening 3.6.

[0069] In addition, the axial flow of the present application also includes a control unit and a wireless communication unit. The detection tube 2.2 has a mounting through hole. The detection tube 2.2 is also connected to a fixed tube 2.7 fixedly connected to the outer wall of the detection tube 2.2. A limiting ring 2.7.1 is fixed at the end of the fixed tube 2.7. The outer wall of the detection tube 2.2 is also connected to a limiting sleeve 6.2 through an L-shaped frame 6.1. An annular airbag 6.2.2 is installed in the limiting sleeve 6.2. The L-shaped frame 6.1 is also equipped with an air pump 6.2.1 for inflating the annular airbag 6.2.2. When the annular airbag 6.2.2 is in a filled state, One end of the annular airbag 6.2.2 abuts against the limiting ring 2.7.1, and the other end abuts against the limiting plate 5.8; a detection unit is installed at the installation through hole, and the detection unit includes a rotating pin 5.7 passing through the fixed tube 2.7 and the limiting sleeve 6.2, a limiting plate 5.8 fixedly connected to one end of the rotating pin 5.7, a mounting plate 5.1 fixedly connected to the other end of the rotating pin 5.7, and a mounting box 5.2 installed at the mounting plate 5.1, a mounting rod 5.1.1 is fixed at the mounting plate 5.1, and the mounting rod 5.1.1 is hinged to the rotating rod 5.5.1 through an elastic reset hinge component, A tail plate 5.5 is fixed to the rotating rod 5.5.1, the mounting box 5.2 has a mounting surface 5.2.3, a collection unit 5.4 is installed on the mounting surface 5.2.3, and the collection unit 5.4 includes a light source part 5.4.1 and an image collection part 5.4.2; a rubber block 2.6 is fixed to the inner wall of the detection tube 2.2, and the rubber block 2.6 has a through hole passed by the rotating pin 5.7 and an abutment plane that can abut against the mounting plate 5.1; the inner wall of the detection tube 2.2 also has an abutment protrusion 2.5 located above the mounting through hole and an abutment protrusion located below the mounting through hole. The groove 2.4, the abutting protrusion 2.5 has an abutting curved surface, the abutting groove 2.4 has two transition curved surfaces 2.4.1 and an abutting curved surface 2.4.2 located between the two transition curved surfaces 2.4.1 and connected to the two transition curved surfaces 2.4.1; the axial flow pump can be in a pumping state and a detection state, in the pumping state, the motor is turned on, the tail plate 5.5 abuts the abutting curved surface, and the annular airbag 6.2.2 is in a filled state; in the detection state, the motor is turned off, the tail plate 5.5 abuts the abutting curved surface, and the annular airbag 6.2.2 is in a filled state.

[0070] The installation box 5.3 includes two side planes 5.2.2 and two mutually connected flow guiding cambers 5.2.1, and one side plane 5.2.2 is connected between each flow guiding camber 5.2.1 and the installation surface 5.2.3; the abutment groove 2.4 has a drainage slope 2.4.3, and the drainage slope 2.4.3 is connected to the abutment curved surface 2.4.2 and the two transition curved surfaces 2.4.1; when the axial flow pump is in the detection state, the angle between the plane where the installation surface 5.2.3 is located and the axis of the rotating shaft 1.7 is between 60-85 degrees (preferably 70-80 degrees, and further preferably 80 degrees); the end of the tail plate 5.5 away from the rotating rod 5.5.1 is semicircular. The acquisition unit 5.4 includes two light source parts 5.4.2 and two image acquisition parts 5.4.1; the installation box 5.2 has a mounting groove, and a counterweight block 5.3 is installed in the mounting groove. The inner circumference of the fixed tube 2.7 is fixed with a plurality of abutting protrusions 2.7.2, the abutting protrusions 2.7.2 include a hemispherical protrusion abutting against the rotating pin 5.7 and a connecting block connecting the fixed tube and the hemispherical protrusion; the plurality of abutting protrusions 2.7.2 are distributed in two circles. The rotating pin 5.7 is a hollow tube, a control box (not shown) is installed at the limit plate 5.8, and the control unit and the wireless communication unit are installed in the control box.

[0071] As shown in the figure, the axial flow pump of the present application adopts a split structure for installation and connection, so it is easy to install and disassemble. When maintenance is required on the inside of the axial flow pump, it can be easily carried out by opening the side cover. When heavy maintenance is required, the various parts can be removed and separated, thereby achieving more convenient maintenance.

[0072] In addition, the axial flow pump of the present application has a GPS positioning function, and has a remote communication and control function, so that remote positioning and remote control can be performed, and remote transmission of detection information can be performed, so that it is convenient for maintenance personnel in the remote control center to remotely judge the internal situation of the axial flow pump. Specifically, as shown in the figure, under the normal pumping state, the annular airbag is first deflated so that the rotating pin can rotate smoothly in the installation through hole. Under the action of pumping, the water flowing upward rapidly will impact the tail plate, and the installation box is in the shape of an arrow, so that it is easier to maintain under the impact of the water flow. Figure 3 The state shown in the figure (at this time, the tail plate is in a Figure 3The position shown in the figure, and at this time the tail plate is abutted by the abutment protrusion, so that the rotating rod is basically parallel to the axis of the rotating shaft, so that it can be better impacted by the upward water flow), after a period of time, the annular airbag is inflated, thereby pressing against the limit ring and the limit plate, so that the mounting plate presses against the rubber block to achieve better sealing. At this time, the water pump pumps normally, and because the collection unit is located away from the water flow, the collection unit is protected, and at this time, the collection unit can still collect images of the water flow as needed, so as to realize the collection of water flow images for regular detection and monitoring of the water flow pumped by the water pump.

[0073] When detection is required, the motor is turned off and the annular airbag is in a deflated state, so that under the action of the counterweight block, the rotating pin rotates, so that the collection unit faces downward and the mounting surface is an inclined surface, so that a better collection viewing angle can be obtained, and at this time, the tail plate abuts against the abutment groove under the action of the elastic reset hinge component, thereby rotating inward, so that the tail plate does not affect the field of view of the collection unit, thereby making the field of view of the collection unit better, and after a period of time, the annular airbag is inflated to lock the position of the rotating pin, so that the image of the inside of the axial flow pump can be more stably collected.

[0074] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A large axial flow pump that can be remotely monitored and easily maintained based on the Internet of Things, characterized in that: It includes a main pipe unit, a detection tube unit, a water inlet pipe unit, a water inlet horn unit, a rotating shaft, a motor driving the rotating shaft, a control unit and a wireless communication unit; a rotating blade unit and a guide vane unit are installed at the rotating shaft; the main pipe unit, the detection tube unit, the water inlet pipe unit and the water inlet horn unit are fixedly connected in sequence, and the main pipe unit includes a first main pipe flange, a first pipe part connected to the first main pipe flange, a bent pipe part connected to the first pipe part, a second pipe part connected to the bent pipe part and a second main pipe flange connected to the second pipe part; the detection tube unit includes a first detection tube flange, a detection tube connected to the first detection tube flange and a second detection tube flange connected to the detection tube; the water inlet pipe unit includes a first water inlet pipe flange, a first pipe flange connected to the first detection tube flange, and a second detection tube flange connected to the detection tube A water inlet pipe connected to the water inlet pipe flange and a second water inlet pipe flange connected to the water inlet pipe; the water inlet horn unit includes a first water inlet horn flange, a water inlet horn connected to the first water inlet horn flange and a second water inlet horn flange fixedly connected to the water inlet horn; the vane unit includes a vane wheel installed at the rotating shaft and a plurality of vanes fixed at the vane wheel; the guide vane unit includes a guide vane wheel installed at the rotating shaft and a plurality of guide vanes fixed at the guide vane wheel; the detection tube is provided with a mounting through hole, the detection tube is also connected to a fixed tube fixedly connected to the outer side wall of the detection tube, a limiting ring is fixed at the end of the fixed tube, the outer side wall of the detection tube is also connected to a limiting sleeve through an L-shaped frame, an annular airbag is installed in the limiting sleeve, An air pump for inflating the annular airbag is also installed at the L-shaped frame; a detection unit is installed at the installation through hole, and the detection unit includes a rotating pin passing through the fixed tube and the limiting sleeve, a limiting plate fixedly connected to one end of the rotating pin, a mounting plate fixedly connected to the other end of the rotating pin, and a mounting box installed at the mounting plate, a mounting rod is fixed to the mounting plate, the mounting rod is hinged to the rotating rod through an elastic reset hinge component, a tail plate is fixed to the rotating rod, the mounting box has a mounting surface, and a collection unit is installed on the mounting surface, and the collection unit includes a light source part and an image collection part; when the annular airbag is in a filled state, one end of the annular airbag abuts against the limiting ring, and the other end abuts against the limiting plate; A rubber block is fixed to the inner wall, and the rubber block has a through hole passed by the rotating pin and an abutment plane that can abut against the mounting plate; the inner wall of the detection tube also has an abutment protrusion located above the mounting through hole and an abutment groove located below the mounting through hole, the abutment protrusion has an abutment arc surface, the abutment groove has two transition surfaces and an abutment surface located between the two transition surfaces and connected to the two transition surfaces; the axial flow pump can be in a pumping state and a detection state, in the pumping state, the motor is turned on, the tail plate abuts the abutment arc surface, and the annular airbag is in a filled state; in the detection state, the motor is turned off, the tail plate abuts the abutment surface, and the annular airbag is in a filled state.

2. The large axial flow pump that can be remotely monitored and easily maintained based on the Internet of Things according to claim 1 is characterized in that: A fixing frame is fixed at the second tube portion, and the fixing frame includes a circular ring portion and two connecting straight rods, and a lower bearing is installed between the circular ring portion and the rotating shaft; a raised portion fixedly connected to the curved pipe is fixed at the curved pipe, and the rotating shaft passes through the raised portion, and an upper bearing is installed between the raised portion and the rotating shaft.

3. The large axial flow pump that can be remotely monitored and easily maintained based on the Internet of Things according to claim 1 is characterized in that: The water inlet pipe has two side openings, and a side cover unit is installed at the side opening. The top and bottom ends of the side opening are fixed with a first arc-shaped convex plate, and both sides of the side opening have a first strip-shaped convex plate. The side cover unit includes a curved cover plate, and the top and bottom ends of the curved cover plate are provided with a second curved convex plate, and both sides of the curved cover plate have a second strip-shaped convex plate.

4. The large axial flow pump capable of remote monitoring and easy maintenance based on the Internet of Things according to claim 3 is characterized in that: A sealing ring is clamped between the main pipe unit and the detection pipe unit, between the detection pipe unit and the water inlet pipe unit, and between the water inlet pipe unit and the water inlet horn unit; a sealing unit is clamped between each side cover unit and the corresponding side opening.

5. The large axial flow pump capable of remote monitoring and easy maintenance based on the Internet of Things according to claim 1 is characterized in that: The mounting box comprises two side planes and two mutually connected flow guiding arc surfaces, wherein one of the side planes is connected between each flow guiding arc surface and the mounting surface; the abutting groove comprises a flow guiding inclined surface, and the flow guiding inclined surface is connected to the abutting curved surface and two transition curved surfaces; when the axial flow pump is in the detection state, the angle between the plane where the mounting surface is located and the axis of the rotating shaft is between 60 and 85 degrees; the end of the tail plate away from the rotating rod is semicircular.

6. The large axial flow pump capable of remote monitoring and easy maintenance based on the Internet of Things according to claim 1 is characterized in that: The acquisition unit includes two light source parts and two image acquisition parts; the installation box is provided with an installation groove, and a counterweight block is installed in the installation groove.

7. The large axial flow pump capable of remote monitoring and easy maintenance based on the Internet of Things according to claim 1 is characterized in that: A plurality of abutment protrusions are fixed to the inner circumferential surface of the fixed tube, and the abutment protrusions include a hemispherical protrusion abutting against the rotating pin and a connecting block connecting the fixed tube and the hemispherical protrusion; the plurality of abutment protrusions are distributed in two circles.

8. The large axial flow pump capable of remote monitoring and easy maintenance based on the Internet of Things according to claim 1 is characterized in that: The rotating pin is in a hollow tubular shape, a control box is installed at the limiting plate, and the control unit and the wireless communication unit are installed in the control box.

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