Intelligent dual-drive pump and water supply system

Abstract

The present invention discloses an intelligent dual-drive pump and a water supply system. The intelligent dual-drive pump comprises a pump casing, an impeller, a motor and a controller; the impeller is rotatably arranged in the pump casing, the motors are respectively arranged on both sides of the pump casing, and the two motors are symmetrically arranged and configured to simultaneously drive the impellers to rotate; the controller is configured with a frequency conversion module for adjusting the power supply frequency, and the frequency conversion module is configured to adjust the power supply frequency of the motor. The head of the intelligent dual-drive pump is increased and the water supply efficiency of the intelligent dual-drive pump is improved.

Description

Technical Field

[0001] The present invention relates to the field of motor technology, and in particular to an intelligent dual-drive pump and a water supply system. Background Art

[0002] At present, water pumps are widely used in people's daily life and industrial production. Water pumps usually consist of a motor, a pump casing and an impeller. The pump casing is provided with a water inlet and a water outlet. The impeller is arranged in the pump casing and driven to rotate by the motor to drive the water flow. Due to the limitations of the motor power supply frequency and the impeller driving method, the water pumps in the prior art have a short head and low water supply efficiency. How to design a technology to increase the head and improve the water supply efficiency is the technical problem to be solved by the present invention. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an intelligent dual-drive pump and a water supply system to increase the head of the intelligent dual-drive pump and improve the water supply efficiency of the intelligent dual-drive pump.

[0004] The technical solution provided by the present invention is an intelligent dual-drive pump, comprising a pump casing, an impeller, a motor and a controller; the impeller is rotatably arranged in the pump casing, the motors are respectively arranged on both sides of the pump casing, and the two motors are symmetrically arranged and configured to drive the impellers to rotate simultaneously; the controller is configured with a frequency conversion module for adjusting the power supply frequency, and the frequency conversion module is configured to adjust the power supply frequency of the motor.

[0005] Furthermore, the motor includes a casing, a stator and a rotor, the stator and the rotor are arranged in the casing, and the casing is fixedly arranged on the pump casing.

[0006] Furthermore, a rotatable main shaft is arranged on the pump casing, and two ends of the main shaft respectively extend to the outside of the pump casing and extend into the outer casing; wherein the impeller is arranged on the main shaft, and the rotor is arranged on the main shaft.

[0007] Furthermore, the impeller is provided with a rotating shaft, the impeller is rotatably mounted on the pump casing via the rotating shaft, and the motor shaft of the motor is drivingly connected to the rotating shaft.

[0008] Furthermore, it also includes a flow detection module; the flow detection module includes a support frame, a detection pipe and a flow meter, the support frame is arranged in the pump casing, the detection pipe is arranged on the support frame and suspended in the pump casing, the sensor of the flow meter is arranged in the detection pipe, and the controller is electrically connected to the flow meter.

[0009] Furthermore, the support frame is arranged in the water inlet or the water outlet of the pump housing.

[0010] Furthermore, a first guide plate is provided in the detection pipeline, and the first guide plate extends along the axis of the detection pipeline and is arranged on the water inlet side of the sensor.

[0011] Furthermore, a second guide plate is provided in the detection pipeline, and the second guide plate extends along the axis of the detection pipeline and is arranged at the water outlet side of the sensor.

[0012] Furthermore, a mounting cavity is formed inside the detection pipe, a water inlet channel and a water outlet channel are formed in the detection pipe, and the water inlet channel and the water outlet channel are respectively connected to the mounting cavity.

[0013] The present invention also provides a water supply system, comprising a water supply pipe and the above-mentioned intelligent dual-drive pump, wherein the intelligent dual-drive pump is connected to the water supply pipe.

[0014] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the intelligent dual-drive pump and water supply system provided by the present invention, by configuring two motors on the pump casing, utilizes the two motors to simultaneously drive the impeller to rotate on both sides of the impeller, so as to effectively increase the impeller torque, and the two motors synchronously drive the impeller to rotate, so that the two ends of the impeller are evenly stressed and can rotate more balanced, and correspondingly, the frequency conversion module can change the frequency of the power supply network to double the speed of the motor, so that the impeller can rotate smoothly under the drive of the high-speed motors on both sides, so as to increase the head of the intelligent dual-drive pump and improve the water supply efficiency of the intelligent dual-drive pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] Figure 1 This is one of the structural schematic diagrams of an embodiment of the intelligent dual-drive pump of the present invention;

[0017] Figure 2 This is the second structural schematic diagram of the embodiment of the intelligent dual-drive pump of the present invention;

[0018] Figure 3 A cross-sectional view of an embodiment of an intelligent dual-drive pump of the present invention;

[0019] Figure 4 for Figure 1 One of the cross-sectional views of the medium flow detection module;

[0020] Figure 5 for Figure 1 The second cross-sectional view of the medium flow detection module.

[0021] Reference numerals:

[0022] Pump housing 100, main shaft 101;

[0023] Impeller 200;

[0024] Motor 300, housing 301, stator 302, rotor 303;

[0025] Controller 400;

[0026] Flow detection module 500;

[0027] Support frame 1, detection pipeline 2, flow meter 3;

[0028] The connecting flange 11 , the first guide plate 21 , the second guide plate 22 , the mounting cavity 23 , the water inlet channel 24 , the water outlet channel 25 , and the sensor 31 . DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figure 1-Figure 3 As shown, the present invention provides an intelligent dual-drive pump, including a pump casing 100, an impeller 200, a motor 300 and a controller 400; the impeller is rotatably arranged in the pump casing, and the motors are respectively arranged on both sides of the pump casing, and the two motors are used to simultaneously drive the impellers to rotate; the controller is configured with a frequency conversion module (not shown) for adjusting the power supply frequency, and the controller is electrically connected to the motor.

[0031] Specifically, the intelligent dual-drive pump of this embodiment is equipped with two motors 300, and the two motors drive the impeller to rotate together. In actual use, the controller can process the frequency of the power supply network through the frequency conversion module, such as the national power grid frequency of 50Hz / S. Correspondingly, the speed of the motor at this power supply frequency is 50Hz×60 seconds=3000 revolutions; in order to improve the working efficiency of the motor, the power supply frequency is processed to 100Hz / S through the frequency conversion module. At this time, the speed of the motor is increased from 3000 revolutions to 6000 revolutions, so that the head and flow rate are increased by increasing the speed of the motor.

[0032] Correspondingly, since the motor runs at a high speed, in order to ensure that the impeller can rotate smoothly in the pump casing, two motors are arranged outside the pump casing, and the two motors drive the impeller to rotate from both sides at the same time, and both sides of the impeller can obtain independent power provided by the motor to drive, and the rotation speeds provided by the two motors match each other, so that the impeller can run smoothly in the pump casing to ensure stability when the impeller runs at high speed.

[0033] Furthermore, the motor includes a housing 301, a stator 302 and a rotor 303, wherein the stator and the rotor are arranged in the housing, and the housing is fixedly arranged on the pump housing.

[0034] Specifically, the motor is fixedly mounted on the pump housing through the housing, and the housing can be fixed to the pump housing by bolts. The motors on both sides of the pump housing can be arranged symmetrically to drive the impeller to rotate more smoothly.

[0035] There are many ways for the motor to drive the impeller to rotate, for example: the impeller is provided with a rotating shaft, the impeller is rotatably mounted on the pump casing via the rotating shaft, and the motor shaft of the motor is drivingly connected to the rotating shaft.

[0036] Preferably, in order to achieve a compact design of the overall structure of the equipment and to reduce the impact of configuring two motors on the increase in the overall volume of the equipment, a rotatable main shaft 101 is provided on the pump casing, and the two ends of the main shaft respectively extend to the outside of the pump casing and extend into the outer casing; wherein the impeller is arranged on the main shaft, and the rotor is arranged on the main shaft.

[0037] Specifically, the pump housing is provided with the main shaft so that the installation requirements of the rotor of the motor and the impeller can be met through the single main shaft. The rotor of the motor is symmetrically installed at the two end positions of the main shaft to drive the main shaft to rotate outside the pump housing. As for the impeller, it is installed on the main shaft inside the pump housing. In this way, by transmitting power through the single main shaft, on the one hand, the two motors can reliably rotate synchronously, and on the other hand, the motor and the impeller share the main shaft, which reduces the use of transmission components and makes the overall structure of the equipment more compact.

[0038] The specific entity of the controller may be a control module configured in a conventional intelligent motor, and the frequency conversion module configured in the controller may be a frequency converter configured in a frequency conversion motor. The frequency converter can adjust the frequency within the range of 0-400Hz according to the operation requirements of the motor.

[0039] In addition, in order to meet the requirements of remote monitoring, the controller is also equipped with a wireless communication module (such as a 4G module or a 5G module, etc.) to achieve remote communication control. The controller is also equipped with a display screen, and a current transformer and a voltage transformer are provided on the motor. The current transformer and the voltage transformer are electrically connected to the controller respectively, and the current and voltage of the motor are displayed through the display screen. In actual use, the water power of the water pump can be calculated by the flow head of the water pump, and the electric power can be calculated by the current and voltage, and the efficiency of the water pump can be further calculated. In this way, the controller can display the current and voltage of the motor, the flow of the water pump and the efficiency of the water pump on the display screen.

[0040] Based on the above technical solution, optional, such as Figure 1 and Figure 4 As shown, the flow detection module includes a support frame 1, a detection pipe 2 and a flow meter 3, the support frame is arranged in the pump casing, the detection pipe is arranged on the support frame and suspended in the pump casing, and the sensor 31 of the flow meter is arranged in the detection pipe and electrically connected to the controller.

[0041] Specifically, a flow detection module 500 is integrated and installed in the pump housing 100 , a detection pipeline 2 in the flow detection module 500 is arranged in the pump housing 100 , and a sensor 31 of a flow meter 3 in the flow detection module 500 is arranged in the detection pipeline 2 .

[0042] For the detection pipeline 2, the detection pipeline 2 is an overall straight pipe structure, and the ratio of the flow path length to the flow path diameter of the detection pipeline 2 meets the straight pipe section length requirement required by the national standard, that is, the length of the detection pipeline 2 is not less than 5 times the diameter of the water flow path in the detection pipeline 2.

[0043] During actual use, water flows into the pump housing 100 , and the water in the pump housing 100 also flows into the detection pipe 2 . The water flowing through the detection pipe 2 passes through the sensor 31 , and then the flow rate is detected by the flow meter 3 .

[0044] Since the flow path length and flow path diameter ratio of the detection pipeline 2 meet the straight pipe section length required by the national standard, the water flow velocity in the detection pipeline 2 is evenly distributed, thereby improving the detection accuracy of the sensor 31.

[0045] In addition, the overall length of the detection pipeline 2 is relatively short, so as to meet the installation requirements of the flow meter 3 under the condition of a relatively short length. In this way, the detection pipeline 2 can be directly integrated into the pump housing 100 without additionally configuring a pipeline outside the pump housing 100 to form a straight pipe section.

[0046] Further, such as Figure 4 As shown, a first guide plate 21 is further provided in the detection pipeline 2 . The first guide plate 21 extends along the axis of the detection pipeline 2 and is arranged on the water inlet side of the sensor 31 .

[0047] Specifically, by configuring the first guide plate 21 in the detection pipe 2, the first guide plate 21 can better guide the water flow into the detection pipe 2, and the first guide plate is extended and arranged along the axial direction of the detection pipe 2, so that the water flow in the detection pipe 2 can flow more quickly and smoothly, thereby playing a better role in balancing the water flow velocity in the detection pipe 2. Further, the detection pipe 2 is also provided with a second guide plate 22, which extends along the axis of the detection pipe 2 and is arranged on the water outlet side of the sensor 31. Specifically, the second guide plate 22 is also configured on the water outlet side of the sensor 31 in the detection pipe 2 to guide the water flow in the detection pipe 2 to be smoothly discharged, thereby more effectively ensuring that the water flow velocity in the detection pipe 2 reaches uniformity.

[0048] Similarly, if Figure 5 As shown, a mounting cavity 23 is formed inside the detection pipe 2 , and a water inlet channel 24 and a water outlet channel 25 are formed in the detection pipe 2 , and the water inlet channel 24 and the water outlet channel 25 are respectively connected to the mounting cavity 23 .

[0049] Specifically, in order to more effectively reduce the overall length of the detection pipeline 2 and meet the installation requirements of the sensor 31, an installation cavity 23 can be formed in the middle part of the inspection pipeline to install the sensor 31, and an inlet channel 24 and an outlet channel 25 with a smaller diameter than the installation cavity 23 are arranged on both sides of the installation cavity 23. The inlet channel 24 and the outlet channel 25 are used to meet the requirements of the straight pipe section length during flow meter 3 detection. At the same time, due to the smaller diameters of the inlet channel 24 and the outlet channel 25, the overall length of the detection pipeline 2 can be more effectively shortened.

[0050] Furthermore, along the water flow direction in the pump housing 100 , the outer dimension of the detection pipe 2 gradually increases from the water inlet channel 24 to the installation cavity 23 , and gradually decreases from the installation cavity 23 to the water outlet channel 25 .

[0051] Specifically, since the detection pipe 2 is suspended in the pump casing 100 through the support frame 1, in order to reduce the greater water resistance caused by the detection pipe 2 to the water flow in the pump casing 100, the water inlet end and the water outlet end of the detection pipe 2 are both set to a conical structure to play a role in guiding the water flow, thereby reducing the water resistance caused to the water flow.

[0052] In some embodiments, in order to facilitate the connection of the sensor 31, a wiring channel (not marked) is provided in the support frame 1, and the cable between the controller and the sensor 31 is arranged in the wiring channel.

[0053] Among them, the flow detection module can be installed in the water inlet or water outlet of the pump housing as required.

[0054] The present invention also provides a water supply system, comprising a water supply pipe and the above-mentioned intelligent dual-drive pump, wherein the intelligent dual-drive pump is connected to the water supply pipe.

[0055] Compared with the prior art, the advantages and positive effects of the present invention are as follows: the intelligent dual-drive pump and water supply system provided by the present invention, by configuring two motors on the pump casing, utilizes the two motors to simultaneously drive the impeller to rotate on both sides of the impeller, so as to effectively increase the impeller torque, and the two motors synchronously drive the impeller to rotate, so that the two ends of the impeller are evenly stressed and can rotate more balanced, and correspondingly, the frequency conversion module can change the frequency of the power supply network to double the speed of the motor, so that the impeller can rotate smoothly under the drive of the high-speed motors on both sides, so as to increase the head of the intelligent dual-drive pump and improve the water supply efficiency of the intelligent dual-drive pump.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligent dual-drive pump, characterized in that: The invention comprises a pump casing, an impeller, a motor and a controller; the impeller is rotatably arranged in the pump casing, the motors are respectively arranged on both sides of the pump casing, and the two motors are symmetrically arranged and configured to simultaneously drive the impeller to rotate; the controller is configured with a frequency conversion module for adjusting the power supply frequency, and the frequency conversion module is configured to adjust the power supply frequency of the motor; The intelligent dual-drive pump also includes a flow detection module; the flow detection module includes a support frame, a detection pipeline and a flow meter, the support frame is arranged in the pump housing, the detection pipeline is arranged on the support frame and suspended in the pump housing, the sensor of the flow meter is arranged in the detection pipeline, and the controller is electrically connected to the flow meter; the length of the detection pipeline is not less than 5 times the diameter of the water flow channel in the detection pipeline; An installation cavity is formed inside the detection pipeline, and an inlet flow channel and an outlet flow channel are formed in the detection pipeline, the inlet flow channel and the outlet flow channel are respectively connected to the installation cavity, and the two sides of the installation cavity are provided with the inlet flow channel and the outlet flow channel whose diameter size is smaller than that of the installation cavity; the external size of the detection pipeline gradually increases from the inlet flow channel to the installation cavity, and gradually decreases from the installation cavity to the outlet flow channel; A wiring channel is provided in the support frame, and the cables between the controller and the sensor are arranged in the wiring channel.

2. The intelligent dual-drive pump according to claim 1, characterized in that: The motor comprises a housing, a stator and a rotor. The stator and the rotor are arranged in the housing, and the housing is fixedly arranged on the pump housing.

3. The intelligent dual-drive pump according to claim 2, characterized in that: The pump housing is provided with a rotatable main shaft, and the two ends of the main shaft respectively extend to the outside of the pump housing and into the outer shell; wherein the impeller is provided on the main shaft, and the rotor is provided on the main shaft.

4. The intelligent dual-drive pump according to claim 1, characterized in that: The impeller is provided with a rotating shaft, the impeller is rotatably mounted on the pump housing via the rotating shaft, and the motor shaft of the motor is drivingly connected to the rotating shaft.

5. The intelligent dual-drive pump according to claim 1, characterized in that: The support frame is arranged in the water inlet or the water outlet of the pump housing.

6. The intelligent dual-drive pump according to claim 1, characterized in that: A first guide plate is also provided in the detection pipeline. The first guide plate extends along the axis of the detection pipeline and is arranged on the water inlet side of the sensor.

7. The intelligent dual-drive pump according to claim 6, characterized in that: A second guide plate is also provided in the detection pipeline. The second guide plate extends along the axis of the detection pipeline and is arranged on the water outlet side of the sensor.

8. A water supply system, comprising a water supply pipe, characterized in that: It also includes the intelligent dual-drive pump as described in any one of claims 1 to 7, and the intelligent dual-drive pump is connected to the water supply pipe.

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