CN209943024U - Intelligent permanent magnet frequency conversion multistage constant pressure pump - Google Patents
Intelligent permanent magnet frequency conversion multistage constant pressure pump Download PDFInfo
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- CN209943024U CN209943024U CN201920580975.4U CN201920580975U CN209943024U CN 209943024 U CN209943024 U CN 209943024U CN 201920580975 U CN201920580975 U CN 201920580975U CN 209943024 U CN209943024 U CN 209943024U
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Abstract
The utility model relates to an intelligence constant voltage water pump technical field refers in particular to an intelligence permanent magnetism frequency conversion multistage constant pressure pump, including constant pressure pump body and power supply, install permanent magnetism inverter motor in the constant pressure pump body, power supply's one end loops through contactor, power saving device and is connected to permanent magnetism inverter motor, power supply's the other end is connected to permanent magnetism inverter motor through the contactor, and permanent magnetism inverter motor includes stator and rotor, the stator includes stator core, and the shaping has the chute on stator core's the outer fringe face; the size of an included angle a between the chute and the horizontal plane is more than or equal to 10 and less than or equal to 30; stator slots are formed in the stator iron core, the included angle b between each stator slot and the horizontal plane is more than or equal to 60 and less than or equal to 80, and the cogging torque can be effectively reduced and the vibration and noise of the starting current motor can be reduced by adopting a fractional slot winding technology due to the reluctance torque generated by the interaction of the cogging stator of the motor iron core and the rotor permanent magnet.
Description
Technical Field
The utility model relates to an intelligence constant voltage water pump technical field refers in particular to an intelligence permanent magnetism frequency conversion multistage constant pressure pump.
Background
The constant pressure water pump has the characteristics of simple structure, low cost, high technical maturity and the like, and has extremely wide application in industry and civilian use. In recent years, along with the improvement of living standard, the enhancement of people's environmental protection consciousness, and the power supply pressure that increases constantly, personnel and society all put forward higher requirement to the energy consumption of all kinds of electrical apparatus, the height of water pump operating efficiency directly influences fluid transport energy consumption and efficiency, constant pressure water supply mostly adopts frequency conversion constant pressure water pump to realize at present, frequency conversion constant pressure water pump can carry out stepless speed regulation to water pump motor, through microcomputer detection, operation according to water consumption and water pressure change, change the water pump rotational speed automatically and keep water pressure invariable in order to satisfy the water demand, with traditional water supply modes such as water tower, high-order water tank, atmospheric pressure jar high-efficient energy-conservation, especially the lift is big, the problem that the flow is big adopts many pumps online to guarantee constant pressure water supply when big, current constant pressure water pump has the noise, the energy.
Disclosure of Invention
The utility model aims at providing an intelligence permanent magnetism frequency conversion multistage constant pressure pump sets up the design of chute through stator core's outer fringe face, solves the problem that the energy consumption is big.
The purpose of the utility model is realized like this: an intelligent permanent magnet variable frequency multistage constant pressure pump comprises a constant pressure pump body and a power supply, wherein a permanent magnet variable frequency motor is installed in the constant pressure pump body, one end of the power supply is connected to the permanent magnet variable frequency motor sequentially through a contactor and a power saving device, the other end of the power supply is connected to the permanent magnet variable frequency motor through the contactor, the permanent magnet variable frequency motor comprises a stator and a rotor, the stator comprises a stator core, and an inclined groove is formed in the outer edge surface of the stator core; the size of an included angle a between the chute and the horizontal plane is more than or equal to 10 and less than or equal to 30; stator slots are formed in the stator iron core, and the size of an included angle b between each stator slot and the horizontal plane is more than or equal to 60 and less than or equal to 80.
Preferably, the included angle a between the inclined groove and the horizontal plane is 15 degrees, and the included angle b between the stator groove and the horizontal plane is 65 degrees.
Preferably, a plurality of grooves are formed in the rotor, permanent magnets are arranged in the grooves, copper sheets are fixedly arranged outside the permanent magnets and used for fixing the permanent magnets in the grooves.
Preferably, the groove is a through groove, and the copper sheets are respectively and fixedly arranged on two sides of the permanent magnet.
Preferably, the constant pressure pump body is provided with a five-way pipe, the lower end of the five-way pipe is connected with the constant pressure pump body, the upper end of the five-way pipe is connected with a pressure tank, a pressure gauge is installed at the side end of the five-way pipe, the other side end of the five-way pipe is connected with a pressure sensor, one end of the five-way pipe is a water inlet, and the water inlet is connected with a water tank.
Preferably, an annular sealing gasket is arranged between the five-way pipe and the pressure tank, the sealing gasket is connected with the five-way pipe through bolts, a metal layer is arranged on an inner ring of the sealing gasket, threads are arranged on the metal layer, and the sealing gasket is connected with the pressure tank in a sealing mode through the threads.
Preferably, a current and voltage data collector is arranged on the permanent magnet variable frequency motor, and a water flow sensor is arranged on the constant pressure pump body; and signals acquired by the current and voltage data acquisition unit, the water flow sensor and the pressure sensor are output to the PID controller, and the output end of the PID controller is respectively connected with the power-saving device and the contactor.
Preferably, the output end of the power saving device is provided with a frequency converter.
Preferably, the constant pressure pump body still is connected with protection circuit, and protection circuit includes voltage detection circuit, fuse and alarm, voltage detection circuit is used for detecting the voltage of constant pressure pump body, the fuse is used for cutting off the circuit of constant pressure pump body, the alarm is used for send out the police dispatch newspaper when the constant pressure pump body breaks down.
Preferably, the protection circuit further includes a current detection circuit for monitoring a current of the constant voltage pump body.
Compared with the prior art, the utility model outstanding and profitable technological effect is:
1. the utility model relates to a through shaping chute on stator core outer fringe face, make the noise that the motor operation of greatly reduced produced, the reluctance torque who produces because of motor core's tooth's socket stator and rotor permanent magnet interact, through adopting fractional slot winding technique, thereby can effectively reduce tooth's socket torque, reduce the starting current motor vibration and noise, and simultaneously, such design makes the stator can produce two sizes in the during operation and equals in the axial, two forces opposite in direction, two forces offset and make axial resultant force be zero, thereby greatly reduced the produced high frequency current loss in the asynchronous machine operation.
2. The utility model discloses a velocity of flow sensor and current-voltage characteristic collector can come the running state of real-time regulation motor according to the water pressure in the current-voltage characteristic of water pump output end velocity of water flow, motor and the water tank, energy-conservation subtracts the consumption.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a schematic structural view of a stator core.
Fig. 4 is a schematic view of the stator core and the rotor.
Fig. 5 is a schematic structural diagram of the present invention.
Fig. 6 is a schematic structural diagram of the protection circuit.
Fig. 7 is a front view of the stator core.
Reference numerals: 1-a constant pressure pump body; 2-a power supply; 3-permanent magnet variable frequency motor; 4-a contactor; 6-a power saving device; 7-a rotor; 8-a stator core; 9-a chute; 10-stator slots; 11-a five-way pipe; 12-a pressure tank; 13-pressure gauge; 14-a pressure sensor; 15-a water inlet; 16-a sealing gasket; 17-a groove; 18-a permanent magnet; 19-copper sheet; 22-PID controller; 23-a protection circuit; 24-a voltage detection circuit; 25-a fuse; 26-an alarm; 27-current detection circuit.
Detailed Description
The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 7.
An intelligent permanent magnet multistage constant pressure pump.
As shown in fig. 1, install permanent magnet variable frequency motor 3 in the constant pressure pump body 1, state that the front end of constant pressure pump body 1 installs five-way pipe 11, the lower extreme and the constant pressure pump body 1 of five-way pipe 11 are connected, the upper end of five-way pipe 11 is connected with overhead tank 12, manometer 13 is installed to the side of five-way pipe 11, another side of five-way pipe 11 is connected with pressure sensor 14, the front end of five-way pipe 11 is water inlet 15, water inlet 15 is connected with the water tank, with manometer 13 through five-way pipe 11, overhead tank 2 and pressure sensor 14 are integrated together, make the compact structure of this equipment, and is convenient for operation, as long as just can accomplish debugging and detection in an area.
Specifically, referring to fig. 2, an annular sealing gasket 16 is arranged between the five-way pipe 11 and the pressure tank 12, the sealing gasket 16 is connected with the five-way pipe 11 through bolts, because gas for increasing pressure exists in the pressure tank, sealing connection is required to be adopted on a pipeline when the sealing gasket is used, the sealing gasket is connected with the pressure tank through sealing by arranging the sealing gasket, gas leakage is prevented, the inner ring of the sealing gasket 16 is provided with a metal layer, the sealing gasket is not easy to age, meanwhile, the sealing gasket is prevented from being damaged when the pressure tank is detached and installed, threads are arranged on the metal layer, and the sealing gasket 16 is connected with the pressure tank 12 through the threads.
Specifically referring to fig. 2, the permanent magnet variable frequency motor 3 comprises a stator and a rotor 7, specifically referring to fig. 5, the stator comprises a stator core 8, and an inclined groove 9 is formed on the outer edge surface of the stator core 8; the size of an included angle a between the chute 9 and the horizontal plane is more than or equal to 10 and less than or equal to 30; stator slots 10 are formed in the stator core 8, and the included angle b between the stator slots 10 and the horizontal plane is more than or equal to 60 and less than or equal to 80.
Specifically, the inventor of the present invention has found through many experiments that the best energy saving performance can be obtained when the included angle a between the inclined slot 9 and the horizontal plane is 15 ° and the included angle b between the stator slot 10 and the horizontal plane is 65 °.
The skewed slots 9 formed on the outer surface of the stator core 8 can reduce noise. Specifically, the reluctance torque generated by the interaction of the cogging stator of the motor core and the permanent magnet of the rotor 7 is generated by using the fractional slot winding technique. Therefore, the cogging torque can be effectively reduced, and the vibration and noise of the starting current motor can be reduced. Meanwhile, the stator can generate two forces with equal magnitude and opposite directions in the axial direction when in work due to the design, and the two forces counteract each other to enable the resultant force of the axial direction to be zero, so that the high-frequency current loss generated in the running process of the asynchronous motor is greatly reduced.
The technical requirements of the permanent magnet variable frequency stator winding are as follows:
1. temperature control NTC: 40 ℃ below zero to 300 ℃, ZY-MF58-3470-502F, lead length 220mm22 wire, 10k negative temperature coefficient at normal temperature (25 ℃), enameled wire using QZY-2/150 or 180 winding
2. The breakdown between the phases and the earth is not generated at 1800V/1S, and the spark is not generated between the turns at 2100V/1S;
3. the winding phases and the overlapping slots are separated by DMD insulating paper of 0.17 mm;
4. 0.2mm 6641(DMD-F) modified polyester film polyester fiber non-woven fabric soft composite material for slot insulation;
5. when DMD with the thickness of 0.2mm is used as the slot cover paper, the slot wedge is a glass fiber epoxy resin rod. The 6641(DMD-F) modified polyester film with the thickness of 0.25mm can also be adopted without a groove wedge, and the end part of the film is wrapped by glass paper with the thickness of 0.1 mm;
6. 200-450V-1 mm of winding leading-out (high-temperature) wire2The length of each of 18 # wires which are temporarily kept is 250mm, the length of each of the 18 # wires is yellow, black, red and green, the length of a cut line at one end of each of the yellow, black and red wires is 20mm, the green wire is a 4# round terminal stamped at one end of a grounding wire, and syq-18 parts of silicone sleeves are adopted.
7. The inductance is more than or equal to 32mH, the resistance value (normal temperature) is 28 omega, the resistance to the ground is more than 100M omega/500V, the withstand voltage test between the phase and the ground is 2100V/1S, and the turn-to-turn insulation is 2500V.
8. And avoiding the lead wires from being completely immersed in the paint during paint dipping.
Specifically referring to fig. 5, a plurality of grooves 17 are formed in the rotor 7, the grooves 17 are through grooves, permanent magnets 18 are arranged in the grooves 17, copper sheets 19 are fixedly arranged outside the permanent magnets 18, the copper sheets 19 are fixedly arranged on two sides of the permanent magnets 18 respectively, and the permanent magnets 18 are fixed in the grooves 17, so that the permanent magnets 18 can be ensured to be stabilized in the grooves 17 by using the installation mode of the permanent magnets 18. The traditional installation mode is glued, and the fixing mode is very easy to be affected by the working environment to cause detachment or damage. This problem is well avoided by such an arrangement. The copper sheets 19 are preferably fixed to the rotor 11 by welding.
Specifically referring to fig. 6, the permanent magnet variable frequency motor 3 is connected with and drives the constant pressure pump body 1 to operate, a water tank is connected to a water inlet 15 of the constant pressure pump body 1, a current and voltage data collector is arranged on the water tank, and a water flow sensor is arranged on the constant pressure pump body 1; the current and voltage data collector, the water flow sensor and the pressure sensor 14 output signals to the PID controller 22, the output end of the PID controller 22 is connected with the electricity-saving device 6 and the contactor 4 respectively, the output end of the electricity-saving device 6 is provided with a frequency converter, the impact of the starting instantaneous voltage change on the power grid and equipment when starting can be effectively controlled by adopting a variable frequency motor, the intelligent constant pressure pump adopts the intelligent control of a microcomputer, the PID controller 22 is arranged in the intelligent constant pressure pump, the running frequency of the water pump is increased to 50Hz, when the pressure is lower than a set value, the system automatically switches the pump to the commercial power running until the pressure reaches the set value, when the water consumption is low, the system controls the water pump to automatically reduce the speed to run along with the pressure, when the running frequency is lower than the set point, the pump is automatically stopped to run to be converted into electricity, therefore, the purpose of constant water pressure is achieved, and a large amount of electricity expense is saved.
Specifically see fig. 7, constant pressure pump body 1 is connected with protection circuit 23, and protection circuit 23 includes current detection circuit 27, voltage detection circuit 24, fuse 25 and alarm 26, current detection circuit 27 is used for the monitoring the electric current of constant pressure pump body 1, voltage detection circuit 24 is used for detecting the voltage of constant pressure pump body 1, fuse 25 is used for cutting off the circuit of constant pressure pump body 1, alarm 26 is used for send out the police dispatch newspaper when constant pressure pump body 1 breaks down, and protection circuit 23 real-time detection constant voltage water pump's voltage current has avoided instantaneous high-voltage or electric current to burn out the phenomenon of constant voltage water pump and has taken place, rational in infrastructure, factor of safety is high, convenient operation, and control is nimble.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The intelligent permanent magnet frequency conversion multistage constant pressure pump comprises a constant pressure pump body (1) and a power supply (2), and is characterized in that a permanent magnet frequency conversion motor (3) is installed in the constant pressure pump body (1), one end of the power supply (2) is connected to the permanent magnet frequency conversion motor (3) sequentially through a contactor (4) and a power saving device (6), the other end of the power supply (2) is connected to the permanent magnet frequency conversion motor (3) through the contactor (4), the permanent magnet frequency conversion motor (3) comprises a stator and a rotor (7), the stator comprises a stator iron core (8), and a chute (9) is formed on the outer edge surface of the stator iron core (8); the size of an included angle a between the chute (9) and the horizontal plane is more than or equal to 10 and less than or equal to 30; stator slots (10) are formed in the stator core (8), and the included angle b between the stator slots (10) and the horizontal plane is more than or equal to 60 and less than or equal to 80.
2. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 1, characterized in that: the included angle a between the inclined groove (9) and the horizontal plane is 15 degrees, and the included angle b between the stator groove (10) and the horizontal plane is 65 degrees.
3. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 1, characterized in that: a plurality of grooves (17) are formed in the rotor (7), permanent magnets (18) are arranged in the grooves (17), copper sheets (19) are fixedly arranged outside the permanent magnets (18), and the copper sheets (19) are used for fixing the permanent magnets (18) in the grooves (17).
4. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 3, characterized in that: the groove (17) is a through groove, and the copper sheets (19) are fixedly arranged on two sides of the permanent magnet (18) respectively.
5. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 1, characterized in that: install five-way pipe (11) on constant pressure pump body (1), the lower extreme and the constant pressure pump body (1) of five-way pipe (11) are connected, and the upper end of five-way pipe (11) is connected with overhead tank (12), and manometer (13) are installed to the side of five-way pipe (11), and another side of five-way pipe (11) is connected with pressure sensor (14), and the one end of five-way pipe (11) is water inlet (15), and water inlet (15) are connected with the water tank.
6. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 5, characterized in that: an annular sealing gasket (16) is arranged between the five-way pipe (11) and the pressure tank (12), the sealing gasket (16) is connected with the five-way pipe (11) through bolts, a metal layer is arranged on an inner ring of the sealing gasket (16), threads are arranged on the metal layer, and the sealing gasket (16) is connected with the pressure tank (12) in a sealing mode through the threads.
7. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 1, characterized in that: a current and voltage data collector is arranged on the permanent magnet variable frequency motor (3), and a water flow sensor is arranged on the constant pressure pump body (1); and signals collected by the current and voltage data collector, the water flow sensor and the pressure sensor (14) are output to the PID controller (22), and the output end of the PID controller (22) is respectively connected with the power-saving device (6) and the contactor (4).
8. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 7, characterized in that: and the output end of the power saving device (6) is provided with a frequency converter.
9. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 1, characterized in that: constant pressure pump body (1) still is connected with protection circuit (23), and protection circuit (23) include voltage detection circuit (24), fuse (25) and alarm (26), voltage detection circuit (24) are used for detecting the voltage of constant pressure pump body (1), fuse (25) are used for cutting off the circuit of constant pressure pump body (1), alarm (26) are used for send out the police dispatch newspaper when constant pressure pump body (1) breaks down.
10. The intelligent permanent magnet variable frequency multistage constant pressure pump according to claim 9, characterized in that: the protection circuit (23) further comprises a current detection circuit (27), and the current detection circuit (27) is used for monitoring the current of the constant pressure pump body (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920580975.4U CN209943024U (en) | 2019-04-25 | 2019-04-25 | Intelligent permanent magnet frequency conversion multistage constant pressure pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920580975.4U CN209943024U (en) | 2019-04-25 | 2019-04-25 | Intelligent permanent magnet frequency conversion multistage constant pressure pump |
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| CN209943024U true CN209943024U (en) | 2020-01-14 |
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| CN201920580975.4U Active CN209943024U (en) | 2019-04-25 | 2019-04-25 | Intelligent permanent magnet frequency conversion multistage constant pressure pump |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112366900A (en) * | 2020-12-03 | 2021-02-12 | 青岛中加特电气股份有限公司 | Variable frequency speed regulation all-in-one machine |
| WO2022160549A1 (en) * | 2021-01-29 | 2022-08-04 | 浙江西菱股份有限公司 | Permanent-magnetic variable-frequency constant-pressure self-priming pump |
-
2019
- 2019-04-25 CN CN201920580975.4U patent/CN209943024U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112366900A (en) * | 2020-12-03 | 2021-02-12 | 青岛中加特电气股份有限公司 | Variable frequency speed regulation all-in-one machine |
| WO2022160549A1 (en) * | 2021-01-29 | 2022-08-04 | 浙江西菱股份有限公司 | Permanent-magnetic variable-frequency constant-pressure self-priming pump |
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