Submersible full tubular pump with multifunctional monitoring function

Abstract

The utility model provides a diving full tubular pump with a multifunctional monitoring function, which comprises a pump body, a vibration sensor and a thermistor sensor, and the vibration sensor and the thermistor sensor are arranged on the inner wall of a mechanical sealing seat of the pump body and are positioned in a bearing chamber; a threading channel is formed in a mandrel of the pump body, an inlet of the threading channel is formed in the end face of the end, located in the hub, of the mandrel, and an outlet of the threading channel is formed in the side face, located in the bearing chamber, of the mandrel. A threading hole is formed in the cone portion of the flow guide cone of the pump body, and a signal cable sequentially penetrates through the threading hole of the flow guide cone and the threading channel of the mandrel to be connected with the vibration sensor and the thermistor sensor. According to the submersible full tubular pump with the multifunctional monitoring function, vibration and temperature in the operation process of the bearing can be monitored, and normal operation of the water pump is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps, and in particular relates to a submersible full-flow pump with multifunctional monitoring. Background Art

[0002] The submersible full-flow pump is submersible. The supporting motor adopts wet motor technology and uses special water-resistant winding wire, which effectively avoids the influence of motor cavity leakage on the insulation performance of the motor winding. The stator and enameled wire of the motor are completely immersed in water. The water pump impeller is installed in the inner cavity of the rotor and forms a whole with the rotor, which greatly shortens the axial length of the water pump and makes the overall structure of the water pump more compact. When the water pump is working, the water flows through the inner cavity of the rotor, the water flow state is straight in and out, the flow channel is smooth, and the water pump unit is highly efficient.

[0003] Since the impeller and rotor of the water pump are rotating parts as a whole, the bearings in the bearing chamber cannot be dynamically monitored during operation. During the operation of the bearings, their temperature rise and vibration conditions cannot be known and can only be discovered and handled through routine disassembly and maintenance at a certain period of time. If it is discovered during maintenance that water has entered the bearing chamber or the bearing is damaged, it will have a great impact on the service life of the entire water pump. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a submersible full-flow pump with multifunctional monitoring, which can monitor the vibration and temperature of the bearing during operation to ensure the normal operation of the water pump.

[0005] In order to solve the above technical problems, an embodiment of the utility model provides a submersible full-flow pump with multi-functional monitoring, including a pump body, a vibration sensor and a thermistor sensor, wherein the vibration sensor and the thermistor sensor are arranged on the inner wall of the mechanical seal seat of the pump body and are located in the bearing chamber; a threading channel is provided in the core shaft of the pump body, the inlet of the threading channel is arranged at an end face of the core shaft located in the hub, and the outlet of the threading channel is arranged on the side of the core shaft located in the bearing chamber; a threading hole is provided in the cone portion of the guide cone of the pump body, and the signal cable passes through the threading hole of the guide cone and the threading channel of the core shaft in turn to be connected with the vibration sensor and the thermistor sensor.

[0006] As a further improvement of the embodiment of the utility model, it also includes a liquid leakage sensor, which is arranged in the bearing chamber and connected to the signal cable.

[0007] As a further improvement of the embodiment of the utility model, the liquid leakage sensor is arranged on the inner wall of the mechanical seal seat of the pump body through a support plate, and one end of the liquid leakage sensor is provided with an insulating sleeve, which is connected to the support plate.

[0008] As a further improvement of the embodiment of the utility model, a first cable locking sealing joint is provided at the entrance of the threading channel.

[0009] As a further improvement of the embodiment of the utility model, a rubber pad is provided between the first cable locking sealing joint and the end face of the core shaft.

[0010] As a further improvement of the embodiment of the utility model, a second cable locking sealing joint is provided at the outlet of the threading channel.

[0011] As a further improvement of the embodiment of the utility model, a rubber pad is provided between the second cable locking sealing joint and the side surface of the core shaft.

[0012] As a further improvement of the embodiment of the utility model, a third cable locking sealing joint is provided at the entrance of the threading hole.

[0013] As a further improvement of the embodiment of the utility model, a single sealing ring is provided between the guide cone of the pump body and the hub.

[0014] As a further improvement of the embodiment of the utility model, a double sealing ring is provided between the mechanical sealing seat of the pump body and the impeller.

[0015] Compared with the prior art, the technical solution of the utility model has the following beneficial effects: a submersible full-flow pump with multi-functional monitoring provided by the embodiment of the utility model arranges a vibration sensor on the inner wall of a mechanical seal seat in a bearing chamber to monitor the vibration of the bearing in real time, which is convenient for analyzing and timely judging the operating condition of the water pump and reducing the influence of component failure rate on the service life of the water pump; a thermistor sensor is arranged on the inner wall of the mechanical seal seat in the bearing chamber to monitor the temperature change of the bearing in real time, timely discover and deal with faults, and avoid irreparable losses to the water pump caused by rough use; a signal cable is introduced into the bearing chamber by using a non-rotating component core shaft and connected to the vibration sensor and the thermistor sensor; the technical problem that the bearing chamber is an integral rotating component and sensors and line layouts cannot be installed is solved, so that the vibration and temperature of the bearing during operation can be monitored to ensure the normal operation of the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a submersible full-flow pump with multifunctional monitoring according to an embodiment of the utility model;

[0017] Figure 2 yes Figure 1 Schematic diagram of the internal structure of the middle bearing chamber.

[0018] The figure includes: insulating rubber sheathed cable 1, line card 2, signal cable 3, single sealing ring 4, guide cone 5, second cable locking sealing joint 6, core shaft 7, mechanical seal 8, mechanical seal seat 9, double sealing ring 10, support plate 11, insulating sleeve 12, liquid leakage detector 13, vibration sensor 14, thermistor sensor 15, and bearing 16. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is described in detail below in conjunction with the accompanying drawings.

[0020] The utility model provides a submersible full-flow pump with multifunctional monitoring, including a pump body. Figure 1 As shown, the pump body includes a guide cone 5, an impeller and a motor. The impeller is installed in the rotor cavity of the motor, and the hub shaft of the impeller is connected to the rotor shaft. The guide cone 5 is arranged at the hub end of the impeller. The hub of the impeller is connected to the runner, and a mechanical seal seat 9 is provided at the end where the runner is connected to the hub, and a mechanical seal 8 is provided on the mechanical seal seat 9. The inner cavity of the runner forms a bearing chamber, and a bearing 16 is provided in the bearing chamber, and the bearing 16 is connected to the rotor shaft of the motor. The mechanical seal seat 9 abuts the bearing 16. The mandrel 7 passes through the pump body. The submersible full-flow pump of this embodiment also includes a vibration sensor 14 and a thermistor sensor 15, which are arranged on the inner wall of the mechanical seal seat 9 of the pump body and are located in the bearing chamber. A threading channel is provided in the mandrel 7 of the pump body, and the inlet of the threading channel is arranged at one end face of the mandrel located in the hub, and the outlet of the threading channel is arranged on the side of the mandrel located in the bearing chamber. The cone of the guide cone 5 of the pump body is provided with a threading hole, and one end of the signal cable 3 passes through the threading hole of the guide cone and the threading channel of the core shaft in sequence to connect with the vibration sensor 14 and the thermistor sensor 15. The other end of the signal cable 3 is fixed to the pump body through the wire clamp 2 and connected to the insulating rubber sheathed cable 1.

[0021] The submersible full-flow pump of the above-mentioned embodiment arranges a vibration sensor on the inner wall of the mechanical seal seat in the bearing chamber to monitor the vibration of the bearing in real time, which is convenient for analyzing and timely judging the operating condition of the water pump and reducing the influence of component failure rate on the service life of the water pump; a thermistor sensor is arranged on the inner wall of the mechanical seal seat in the bearing chamber to monitor the temperature change of the bearing in real time, timely discover and deal with faults, and avoid irreparable losses to the water pump caused by rough use; a signal cable is introduced into the bearing chamber by using the core shaft of a non-rotating component and connected to the vibration sensor and the thermistor sensor; the technical problem that the bearing chamber is an integral rotating component and the sensor and line layout cannot be installed is solved, so that the vibration and temperature of the bearing during operation can be monitored to ensure the normal operation of the water pump.

[0022] Preferably, the submersible full-throughflow pump of this embodiment further includes a liquid leakage sensor 13, which is arranged in the bearing chamber and connected to the signal cable 3. The liquid leakage sensor 13 is arranged on the inner wall of the mechanical seal seat 9 of the pump body through the support plate 11, and one end of the liquid leakage sensor 13 is sleeved with an insulating sleeve 12, which is connected to the support plate 11. The liquid leakage sensor 13 monitors the change of the liquid resistance in the bearing chamber, and then monitors the amount of water leakage entering the bearing chamber.

[0023] Preferably, a first cable locking seal joint is provided at the inlet of the threading channel. A rubber pad is provided between the first cable locking seal joint and the end face of the core shaft. A second cable locking seal joint 6 is provided at the outlet of the threading channel. A rubber pad is provided between the second cable locking seal joint and the side face of the core shaft. By providing cable locking seal joints at the inlet and outlet of the threading channel, water is prevented from entering the threading channel and the bearing chamber.

[0024] Preferably, a third cable locking seal joint is provided at the inlet of the threading hole. A single seal ring 4 is provided between the guide cone of the pump body and the wheel hub. The third cable locking seal joint can prevent water from entering the inner cavity of the wheel hub through the threading hole, and the single seal ring 4 can prevent water from entering the inner cavity of the wheel hub through the gap between the guide cone and the wheel hub, thereby reducing the probability of water entering the bearing chamber.

[0025] Preferably, a double seal ring 10 is provided between the mechanical seal seat of the pump body and the runner. The double seal ring 10 can prevent water from entering the bearing chamber through the gap between the mechanical seal seat and the runner.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above specific embodiments, and the above specific embodiments and descriptions in the specification are only for further illustrating the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A submersible full-flow pump with multifunctional monitoring, characterized in that: The invention comprises a pump body, a vibration sensor (14) and a thermistor sensor (15), wherein the vibration sensor (14) and the thermistor sensor (15) are arranged on the inner wall of a mechanical seal seat (9) of the pump body and are located in a bearing chamber; a threading channel is arranged in a core shaft (7) of the pump body, an inlet of the threading channel is arranged on an end face of the core shaft located in a wheel hub, and an outlet of the threading channel is arranged on a side face of the core shaft located in the bearing chamber; a threading hole is arranged on a cone portion of a guide cone (5) of the pump body, and a signal cable (3) passes through the threading hole of the guide cone and the threading channel of the core shaft in sequence to be connected to the vibration sensor (14) and the thermistor sensor (15).

2. The submersible full-flow pump according to claim 1, characterized in that: It also includes a liquid leakage sensor (13), which is arranged in the bearing chamber and connected to the signal cable (3).

3. The submersible full-flow pump according to claim 2, characterized in that: The liquid leakage sensor (13) is arranged on the inner wall of the mechanical seal seat of the pump body through the support plate (11), and one end of the liquid leakage sensor (13) is sleeved with an insulating sleeve (12), and the insulating sleeve (12) is connected to the support plate (11).

4. The submersible full-flow pump according to claim 1, characterized in that: A first cable locking sealing joint is provided at the entrance of the threading channel.

5. The submersible full-flow pump according to claim 4, characterized in that: A rubber pad is arranged between the first cable locking sealing joint and the end surface of the core shaft.

6. The submersible full-flow pump according to claim 1, characterized in that: A second cable locking sealing joint (6) is provided at the outlet of the threading channel.

7. The submersible full-flow pump according to claim 6, characterized in that: A rubber pad is arranged between the second cable locking sealing joint and the side surface of the core shaft.

8. The submersible full-flow pump according to claim 1, characterized in that: A third cable locking sealing joint is provided at the entrance of the threading hole.

9. The submersible full-flow pump according to claim 1, characterized in that: A single sealing ring (4) is provided between the guide cone of the pump body and the wheel hub.

10. The submersible full-flow pump according to claim 1, characterized in that: A double sealing ring (10) is arranged between the mechanical sealing seat of the pump body and the rotor.

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