CN115425802A - Circulating water pump economizer system - Google Patents
Circulating water pump economizer system Download PDFInfo
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- CN115425802A CN115425802A CN202211163964.9A CN202211163964A CN115425802A CN 115425802 A CN115425802 A CN 115425802A CN 202211163964 A CN202211163964 A CN 202211163964A CN 115425802 A CN115425802 A CN 115425802A
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- pipe
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- air outlet
- conductor rotor
- cooling chamber
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/20—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by changing the driving speed
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/102—Magnetic gearings, i.e. assembly of gears, linear or rotary, by which motion is magnetically transferred without physical contact
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K49/00—Dynamo-electric clutches; Dynamo-electric brakes
- H02K49/10—Dynamo-electric clutches; Dynamo-electric brakes of the permanent-magnet type
- H02K49/104—Magnetic couplings consisting of only two coaxial rotary elements, i.e. the driving element and the driven element
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Motor Or Generator Cooling System (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of water pump energy conservation, in particular to a circulating water pump energy-saving system, which comprises: a water pump body; the permanent magnet speed regulator comprises a conductor rotor, a permanent magnet rotor and a regulator; an electric actuator; one side of the first air outlet pipe, which is far away from the conductor rotor, is communicated with a first branch pipe; one side of the second air outlet pipe, which is far away from the conductor rotor, is communicated with a second branch pipe; the air outlet end of the fan is communicated with the first branch pipe, and the air inlet end of the fan is communicated with the second branch pipe; a first cooling chamber; a second cooling chamber; the water outlet pipeline of the water pump body is communicated with a main flow pipe, a first shunt pipe and a second shunt pipe, the first shunt pipe is communicated with the first cooling chamber, and the second shunt pipe is communicated with the second cooling chamber; the first cooling cavity is communicated with a first water outlet pipe, and the second cooling cavity is communicated with a second water outlet pipe. This application has the effect of effectively dispelling the heat to permanent magnet speed regulator.
Description
Technical Field
The invention relates to the technical field of water pump energy conservation, in particular to an energy-saving system of a circulating water pump.
Background
The circulating water system usually adopts a water pump and a motor to operate, based on the safety consideration of the water pump in design, the actual operation flow of the water pump is far smaller than the rated flow, and the output flow is usually controlled by adopting a mode of regulating a valve, so that the energy waste of the water pump is serious, the safety and the reliability of the system are poor, the currently used motor has high three-level energy efficiency energy consumption, is extremely uneconomical and has high equipment maintenance cost, and the regulation mode of a permanent magnet speed regulator in a pump motor and a fan system is gradually applied, but the permanent magnet speed regulator can generate a lot of heat in the operation process, the more the heat is generated when the power is higher, the more the permanent magnet speed regulator can be ensured to operate at the proper temperature, and the circulating water system is one of the important conditions of safe, stable and long-period operation of the permanent magnet speed regulator, and therefore needs to be improved.
Disclosure of Invention
In order to carry out effective heat dissipation to permanent magnet speed regulator, this application provides a circulating water pump economizer system.
The above object of the present invention is achieved by the following technical solutions:
a circulating water pump economizer system includes:
a water pump body;
the permanent magnet speed regulator comprises a conductor rotor, a permanent magnet rotor and a regulator, wherein the conductor rotor is used for being installed on an output shaft of an external motor, and the permanent magnet rotor is installed on a pump shaft of the water pump body;
the electric actuator is used for controlling the regulator to regulate the meshing area between the conductor rotor and the permanent magnet rotor;
the first air outlet pipe is arranged around the conductor rotor, one side, far away from the conductor rotor, of the first air outlet pipe is communicated with a first branch pipe, and a plurality of first air outlet nozzles are mounted on one side, close to the conductor rotor, of the first air outlet pipe;
the second air outlet pipe is arranged around the conductor rotor, the first air outlet pipe and the second air outlet pipe are respectively arranged at two sides of the conductor rotor, one side of the second air outlet pipe, which is far away from the conductor rotor, is communicated with a second branch pipe, and one side of the first air outlet pipe, which is close to the conductor rotor, is provided with a plurality of second air outlet nozzles;
the air outlet end of the fan is communicated with the first branch pipe, and the air inlet end of the fan is communicated with the second branch pipe;
a first cooling chamber, the first leg portion being located within the first cooling chamber;
a second cooling chamber, the second branch portion being located within the second cooling chamber;
the water outlet pipeline of the water pump body is communicated with a main flow pipe, a first shunt pipe and a second shunt pipe, the first shunt pipe is communicated with the first cooling chamber, the second shunt pipe is communicated with the second cooling chamber, a first electric valve is installed on the first shunt pipe, and a second electric valve is installed on the second shunt pipe;
the first cooling cavity is communicated with a first water outlet pipe, and the second cooling cavity is communicated with a second water outlet pipe;
the flow detection meter is used for detecting the current flow of the main flow pipe;
the temperature sensor is used for detecting the temperature value of the conductor rotor and generating the temperature change rate in unit time;
a controller, comprising:
the strategy generating unit is used for generating an adjusting strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold value;
and the adjusting unit is used for adjusting the meshing area and the opening and closing states of the first electric valve and the second electric valve according to an adjusting strategy.
By adopting the technical scheme, when the water pump works, when the first electric valve is opened and the second electric valve is opened, a small part of water flowing out of the water outlet pipeline flows into the first cooling cavity and the second cooling cavity from the first shunt pipe and the second shunt pipe of the water outlet pipeline respectively and flows out of the first water outlet pipe and the second water outlet pipe; the fan is used for producing negative pressure environment airflow, the negative pressure environment airflow is sprayed out through one side, close to the conductor rotor, of the first branch pipe, the first cooling chamber is used for cooling the airflow in the first branch pipe, the airflow is sucked in from one side, close to the conductor rotor, of the second branch pipe, and heat on the conductor rotor is taken away; then the air flow is cooled by the water in the second cooling chamber when passing through the second branch pipe, and is sprayed out through the first branch pipe by the fan to circularly cool the conductor rotor; when a worker sets the meshing area of the permanent magnet speed regulator according to the required output flow of the water pump, namely the relative position of the permanent magnet rotor and the conductor rotor in the axial direction, when the permanent magnet speed regulator works according to the meshing area set by the worker, the output flow of a main flow pipe of the water pump is constant, and the conductor rotor is gradually heated; when the output flow of the water pump is adjusted to be large by a worker, namely the output flow of a main flow pipe of the water pump is adjusted to be large, the temperature rise of the conductor rotor becomes fast, the temperature change rate generated by the temperature sensor in unit time exceeds a first preset threshold value, and then the strategy generation unit generates an adjustment strategy according to the current flow and the temperature change rate, so that the temperature reduction in different degrees is realized.
The application may be further configured in a preferred example to: the policy generation unit includes:
the first strategy generation subunit is used for generating a first adjustment strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold and is lower than a second preset threshold; the adjusting strategy comprises an adjusted meshing area and an opening state of the first electric valve, and the second preset threshold is larger than the first preset threshold;
the second strategy generation subunit is used for generating a second adjustment strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold and is higher than a second preset threshold; the adjustment strategy comprises an adjusted meshing area, a first electric valve is in an opening state, and a second electric valve is in an opening state.
By adopting the technical scheme, when a first adjustment strategy is adopted, the first branch pipes are communicated, part of branch pipes can flow into the first cooling cavity from the first branch pipes, the fan is started, negative-pressure environment airflow is generated by the fan and is sprayed out from one side, close to the conductor rotor, of the first branch pipe, the first cooling cavity cools the airflow in the first branch pipe, and the airflow is sucked from one side, close to the conductor rotor, of the second branch pipe to take away heat on the conductor rotor; and a second adjustment strategy is adopted, so that the air flow can be further cooled, and the cooling effect is improved.
The application may be further configured in a preferred example to: the spraying directions of the first air outlet nozzles and the second air outlet nozzles face to the same side of the conductor rotor.
The application may be further configured in a preferred example to: the controller further includes:
the steering obtaining module is used for obtaining the steering of the conductor rotor under the condition that the temperature change rate exceeds a third preset threshold value, and the third preset threshold value is larger than a second preset threshold value;
and the fan steering control module is used for controlling the fan to reversely rotate under the condition that the steering direction of the conductor rotor is inconsistent with the airflow direction at the first air outlet nozzle.
Through adopting above-mentioned technical scheme, can accelerate the circulating speed of air current, further improve the cooling effect.
The present application may be further configured in a preferred example to: one end of the first water outlet pipe is communicated with the first cooling cavity, and the other end of the first water outlet pipe is communicated with the second cooling cavity.
By adopting the technical scheme, one end of the first water outlet pipe is communicated with the first cooling cavity, and the other end of the first water outlet pipe is communicated with the second cooling cavity, so that water flow enters the first cooling cavity through the first flow dividing pipe and then can enter the second cooling cavity to be discharged, and secondary cooling is performed.
The application may be further configured in a preferred example to: the pipe diameter of the first water outlet pipe is gradually narrowed from one end communicated with the first cooling cavity to the other end.
Through adopting above-mentioned technical scheme for the rivers velocity of flow that first cooling chamber flows can accelerate progressively in first outlet pipe, so that the water that first cooling chamber flows can flow into the second cooling chamber more fast in, accelerate the discharge of these rivers in order to avoid influencing the cooling effect.
The present application may be further configured in a preferred example to: and one end of the first water outlet pipe communicated with the first cooling cavity is higher than the other end of the first water outlet pipe.
Through adopting above-mentioned technical scheme, further accelerate the rivers velocity of flow that first cooling chamber flows, and avoid the water backward flow.
The present application may be further configured in a preferred example to: generating an adjustment strategy according to the current flow and the temperature change rate, wherein the adjustment strategy comprises the following steps:
and inquiring a corresponding adjusting strategy in a preset inquiry library according to the current flow and the temperature change rate.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the water pump works, when the first electric valve is opened, the second electric valve is opened, a small part of water flowing out of the water outlet pipeline respectively flows into the first cooling cavity and the second cooling cavity from the first shunt pipe and the second shunt pipe of the water outlet pipeline and flows out of the first water outlet pipe and the second water outlet pipe; the fan is used for producing negative pressure environment airflow, the negative pressure environment airflow is sprayed out through one side, close to the conductor rotor, of the first branch pipe, the first cooling chamber is used for cooling the airflow in the first branch pipe, the airflow is sucked in from one side, close to the conductor rotor, of the second branch pipe, and heat on the conductor rotor is taken away; then the air flow is cooled by water in the second cooling chamber when passing through the second branch pipe, and is sprayed out through the first branch pipe by the fan to circularly cool the conductor rotor; when a worker sets the meshing area of the permanent magnet speed regulator according to the required output flow of the water pump, namely the relative positions of the permanent magnet rotor and the conductor rotor in the axial direction, when the permanent magnet speed regulator works according to the meshing area set by the worker, the output flow of a main flow pipe of the water pump is constant, and the conductor rotor can be gradually heated; when the output flow of the water pump is adjusted to be large by a worker, namely the output flow of a main flow pipe of the water pump is adjusted to be large, the temperature rise of the conductor rotor is increased quickly, the temperature change rate generated by the temperature sensor in unit time exceeds a first preset threshold value, and the strategy generation unit generates an adjustment strategy according to the current flow and the temperature change rate to realize cooling in different degrees;
2. when a first adjusting strategy is adopted, the first branch pipes are communicated, part of branch flows can flow into the first cooling cavity from the first branch pipes, the fan is started, negative-pressure environment airflow is produced by the fan and is sprayed out from one side, close to the conductor rotor, of the first branch pipe, the first cooling cavity cools the airflow in the first branch pipe, the airflow is sucked from one side, close to the conductor rotor, of the second branch pipe, and heat on the conductor rotor is taken away; by adopting a second adjustment strategy, the air flow can be further cooled, and the cooling effect is improved;
3. the rivers velocity of flow that first cooling chamber flows can progressively accelerate in first outlet pipe to make the water that first cooling chamber flows can flow into the second cooling chamber more fast in, accelerate the discharge of these rivers in order to avoid influencing the cooling effect.
Drawings
FIG. 1 is a schematic structural diagram of an energy-saving system of a circulating water pump according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating the positions of a first air outlet pipe, a first air outlet pipe and a conductor rotor in the energy-saving system of the circulating water pump according to an embodiment of the present application;
fig. 3 is a schematic connection diagram of modules and devices in an energy-saving system of a circulating water pump according to an embodiment of the present application.
Reference numerals are as follows: 1. a water pump body; 2. a permanent magnet speed regulator; 3. a first air outlet pipe; 4. a second air outlet pipe; 5. a fan; 6. a first cooling chamber; 7. a second cooling chamber; 8. a main flow pipe; 9. a first shunt pipe; 10. a second shunt pipe; 11. a first electrically operated valve; 12. a second electrically operated valve; 13. a first water outlet pipe; 14. a second water outlet pipe; 15. a conductor rotor; 16. a permanent magnet rotor; 17. a motor; 18. a first branch pipe; 19. a second branch pipe; 20. a first air outlet nozzle; 21. and a second air outlet nozzle.
Detailed Description
The following description of the exemplary embodiments of the present application, taken in conjunction with the accompanying drawings, includes various details of the embodiments of the application to assist in understanding, which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
It should be noted that the terms "first", "second", etc. in the present invention are used for distinguishing similar objects, and are not necessarily used for describing a particular order or sequence. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the disclosure described herein are capable of operation in sequences other than those illustrated or otherwise described herein. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure.
In addition, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship, unless otherwise specified.
Fig. 1 is a schematic structural diagram of an energy-saving system of a circulating water pump in an embodiment of the present application, and as shown in fig. 1, the energy-saving system of the circulating water pump includes a water pump body 1, a permanent magnet speed regulator 2, and a fan 5, the permanent magnet speed regulator 2 includes a conductor rotor 15, a permanent magnet rotor 16, and a regulator, and in the present application, a sleeve type permanent magnet speed regulator 2 is used, where the conductor rotor 15 of the sleeve type permanent magnet speed regulator 2 is used for being mounted on an output shaft of an external motor 17, and the permanent magnet rotor 16 is mounted on a pump shaft of the water pump body 1;
the conductor rotor 15 is arranged on the output shaft, the permanent magnet rotor 16 is arranged in the conductor rotor 15, the conductor rotor and the permanent magnet rotor are not connected, the conductor rotor and the permanent magnet rotor are separated by an air gap and rotate independently along with the rotating shafts arranged respectively; the adjuster adjusts the relative positions of the permanent magnet rotor 16 and the conductor rotor 15 in the axial direction to change the meshing area between the conductor rotor 15 and the permanent magnet rotor 16. When the conductor rotor 15 rotates with the motor 17, the conductor rotor 15 and the permanent magnet rotor 16 generate relative motion, the conductor rotor 15 cuts magnetic lines of force to generate eddy current, and the eddy current generates an induced magnetic field to interact with the permanent magnetic field, so as to drive the permanent magnet rotor 16 to rotate, and as a result, the torque of the output shaft of the motor 17 is transmitted to the pump shaft. When the permanent magnet rotor 16 is reciprocated in the axial direction by the adjuster, the meshing area between the permanent magnet rotor 16 and the conductor rotor 15 is changed. The meshing area is large, the transmitted torque is large, and the load rotating speed is high; the meshing area is small, the transmitted torque is small, and the load rotating speed is low. The energy-saving system of the circulating water pump also comprises an electric actuator, wherein the electric actuator is used for controlling the regulator to regulate the meshing area between the conductor rotor 15 and the permanent magnet rotor 16; the principle of the permanent magnet speed regulator 2 and the adjusting mode of the electric actuator both belong to the known technical means, and are not described herein.
With reference to fig. 2, the system is further provided with a first air outlet pipe 3 and a second air outlet pipe 4 surrounding the conductor rotor 15, the first air outlet pipe 3 and the second air outlet pipe 4 are fixedly installed on a rack, the first air outlet pipe 3 and the second air outlet pipe 4 are respectively arranged on two sides of the conductor rotor 15, the first air outlet pipe 3 and the second air outlet pipe 4 are both arc-shaped strips, the radian is not more than 180 degrees, two ends of the first air outlet pipe 3 and the second air outlet pipe 4 are both sealed, two ends of the first air outlet pipe 3 and two ends of the second air outlet pipe 4 are opposite, and the inner arc-shaped side of the first air outlet pipe 3 and the inner arc-shaped side of the second air outlet pipe 4 are opposite; one side of the first air outlet pipe 3, which is far away from the conductor rotor 15, is communicated with a first branch pipe 18, and one side of the first air outlet pipe 3, which is near to the conductor rotor 15, is provided with a plurality of first air outlet nozzles 20; a second branch pipe 19 is communicated with one side of the second air outlet pipe 4, which is far away from the conductor rotor 15, a plurality of second air outlet nozzles 21 are installed on one side of the first air outlet pipe 3, which is close to the conductor rotor 15, and the spraying directions of the plurality of first air outlet nozzles 20 and the plurality of second air outlet nozzles 21 all face the same side of the conductor rotor 15, for example, when the plurality of first air outlet nozzles 20 and the plurality of second air outlet nozzles 21 are respectively positioned at the left side and the right side of the conductor rotor 15, the plurality of first air outlet nozzles 20 and the plurality of second air outlet nozzles 21 all face the top side or the bottom side of the conductor rotor 15;
the air outlet end of the fan 5 is communicated with the first branch pipe 18, the air inlet end of the fan 5 is communicated with the second branch pipe 19, the energy-saving system of the circulating water pump further comprises a first cooling chamber 6 and a second cooling chamber 7, the first cooling chamber 6 and the second cooling chamber 7 can be both installed on a rack, part of the first branch pipe 18 is located in the first cooling chamber 6, part of the second branch pipe 19 is located in the second cooling chamber 7, specifically, the first branch pipe 18 penetrates through the first cooling chamber 6 and is fixedly connected with the chamber wall of the first cooling chamber 6 in a waterproof sealing manner, the second branch pipe 19 penetrates through the second cooling chamber 7 and is fixedly connected with the chamber wall of the second cooling chamber 7 in a waterproof sealing manner, the water outlet pipeline of the water pump body 1 is communicated with a main flow pipe 8, a first branch flow pipe 9 and a second branch flow pipe 10, the first branch flow pipe 9 is communicated with the first cooling chamber 6, and the second branch flow pipe 10 is communicated with the second cooling chamber 7; a first electric valve 11 is arranged on the first shunt pipe 9, a second electric valve 12 is arranged on the second shunt pipe 10, the first cooling chamber 6 is communicated with a first water outlet pipe 13, and the second cooling chamber 7 is communicated with a second water outlet pipe 14; and, one end of the first outlet pipe 13 communicates with the first cooling chamber 6, and the other end communicates with the second cooling chamber 7, the one end of the first outlet pipe 13 communicating with the first cooling chamber 6 is higher than the other end, the pipe diameter of the first outlet pipe 13 is gradually narrowed from the one end communicating with the first cooling chamber 6 toward the other end.
Furthermore, when the water pump works, when the first electric valve 11 is opened and the second electric valve 12 is opened, a small part of water flowing out of the water outlet pipeline flows into the first cooling chamber 6 and the second cooling chamber 7 from the first shunt pipe 9 and the second shunt pipe 10 of the water outlet pipeline respectively and flows out from the first water outlet pipe 13 and the second water outlet pipe 14; the fan 5 produces negative pressure environment airflow to be sprayed out through one side of the first branch pipe 18 close to the conductor rotor 15, the first cooling chamber 6 cools the airflow in the first branch pipe 18, and the airflow is sucked from one side of the second branch pipe 19 close to the conductor rotor 15 to take away heat on the conductor rotor 15; the air flow is then cooled by the water in the second cooling chamber 7 while passing through the second branch pipe 19, and is circulated and cooled by the fan 5 through the first branch pipe 18 to the conductor rotor 15.
Referring to fig. 1 and 3, the energy-saving system of the circulating water pump further comprises a flow rate detector, a temperature sensor and a controller, wherein the flow rate detector, the temperature sensor and the controller are in communication connection, and particularly, preferably in a wired connection manner; the flow rate detecting meter is installed on the main flow pipe 8 to detect the current flow rate of the main flow pipe 8; the temperature sensor is arranged on the frame and used for detecting the temperature value of the conductor rotor 15 and generating the temperature change rate in unit time; specifically, the temperature sensor is a non-contact temperature sensor;
the controller comprises a strategy generating unit and an adjusting unit, wherein the strategy generating unit is used for generating an adjusting strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold value;
it will be appreciated that the rate of temperature change is related to the power of the water pump, i.e. positively to the output flow of the water pump; the output flow of the water pump body 1 is increased, and the conductor rotor 15 is accelerated along with the temperature rise; therefore, when a worker sets the meshing area of the permanent magnet speed regulator 2 according to the required output flow of the water pump, namely the relative positions of the permanent magnet rotor 16 and the conductor rotor 15 in the axial direction, when the permanent magnet speed regulator 2 works according to the meshing area set by the worker, the output flow of the main flow pipe 8 of the water pump is constant, and the temperature of the conductor rotor 15 is gradually increased; when the output flow of the water pump is adjusted to be large by a worker, namely the output flow of a main flow pipe 8 of the water pump is adjusted to be large, the temperature rise of a conductor rotor 15 is fast, the temperature change rate generated by the temperature sensor in unit time exceeds a first preset threshold value, and the strategy generation unit generates an adjustment strategy according to the current flow and the temperature change rate;
specifically, the policy generation unit includes a first policy generation subunit and a second policy generation subunit;
the first strategy generation subunit is used for generating a first adjustment strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold and is lower than a second preset threshold; the adjusting strategy comprises an adjusted meshing area and a state that the first electrically operated valve 11 is opened, and the second strategy generating subunit is used for generating a second adjusting strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold and is higher than a second preset threshold; the adjustment strategy includes the adjusted engagement area, the first electrically operated valve 11 being in an open state, and the second electrically operated valve 12 being in an open state.
The first preset threshold and the second preset threshold are preset values and are used for reflecting the temperature change rate, the second preset threshold is larger than the first preset threshold, when the temperature change rate exceeds the first preset threshold and is lower than the second preset threshold, it is indicated that the temperature rise is fast, the first electric valve 11 is opened, the first branch pipe 9 is communicated, part of the branch flow can flow into the first cooling chamber 6 from the first branch pipe 9, the fan 5 is started, the fan 5 makes negative-pressure environment airflow and ejects the airflow through one side, close to the conductor rotor 15, of the first branch pipe 18, the first cooling chamber 6 cools the airflow in the first branch pipe 18, the airflow is sucked from one side, close to the conductor rotor 15, of the second branch pipe 19, and the heat on the conductor rotor 15 is taken away; the ratio of the pipe diameters of the first shunt pipe 9 and the main flow pipe 8 can be 1.
The mesh area in the first adjustment strategy may be obtained by querying a first lookup table built in the system, where the first lookup table is a preset table for querying the mesh area. That is, the meshing area is used as a value in the key value pair, and is pre-recorded through the table, and subsequently, only the key in the key value pair needs to be used for searching the corresponding meshing area. In this case, the flow rate is the key in the key value pair, and the adjusted meshing area is the value in the key value pair. Thus, the system can look up the corresponding mesh area using the flow as a key. Specifically, in the first lookup table, the correspondence between each flow rate and the meshing area is determined through multiple experiments under the conditions that the first electric valve 11 is opened, the second electric valve 12 is closed, and the fan 5 is started, wherein the value of the flow rate is the current flow rate before adjustment, that is, the meshing area obtained through querying the corresponding first lookup table formed by the experimental data records can ensure that the flow rate after adjustment is consistent with the current flow rate before adjustment.
Under the condition that one end of the first water outlet pipe 13 is communicated with the first cooling cavity 6 and the other end is communicated with the second cooling cavity 7, water flow enters the first cooling cavity 6 through the first shunt pipe 9 and then can enter the second cooling cavity 7 to be discharged for secondary cooling;
under the condition that the temperature change rate exceeds a second preset threshold value, which indicates that the temperature rise is fast, a first electric valve 11 and a second electric valve 12 are opened, the first shunt pipe 9 is communicated with the second shunt pipe 10, part of the sub-streams can flow into the first cooling chamber 6 from the first shunt pipe 9, the fan 5 is started, negative-pressure ambient air flow is produced by the fan 5 and is ejected out through one side, close to the conductor rotor 15, of the first branch pipe 18, the first cooling chamber 6 cools the air flow in the first branch pipe 18, the air flow is sucked from one side, close to the conductor rotor 15, of the second branch pipe 19, and heat on the conductor rotor 15 is taken away; then, the air flow is cooled by the water in the second cooling chamber 7 when passing through the second branch pipe 19, and is ejected through the first branch pipe 18 by the fan 5 to circularly cool the conductor rotor 15, and the pipe diameter ratio of the first branch pipe 9, the second branch pipe 10 and the main flow pipe 8 can be 1.
The mesh area in the second adjustment strategy can be obtained by querying in a second lookup table built in the system, and the second lookup table also records the corresponding relation between the flow rate and the mesh area. Specifically, in the second lookup table, the correspondence between each flow rate and the meshing area is determined through multiple experiments under the conditions that the first electric valve 11 is opened, the second electric valve 12 is opened, and the fan 5 is started, wherein the value of the flow rate is the current flow rate before adjustment, that is, the meshing area obtained through querying the corresponding second lookup table formed by the experimental data records can ensure that the flow rate after adjustment is consistent with the current flow rate before adjustment.
Through second adjustment strategy, can further cool down the air current, improve cooling effect.
The first query table and the second query table are stored in a preset query library of the system, so that the system can directly query and call corresponding adjustment strategies.
The branch flowing out through the first branch pipe 9 flows out through the first cooling chamber 6, the first water outlet pipe 13, the second cooling chamber 7 and the second water outlet pipe 14 and then can flow back to a water source; the branch flowing out through the second branch pipe 10 can flow back to the water source after flowing out through the second cooling chamber 7 and the second water outlet pipe 14.
In addition, in an embodiment, the controller further includes a steering obtaining module and a fan 5 steering control module, wherein the steering obtaining module is configured to obtain steering of the conductor rotor 15 when the temperature change rate exceeds a third preset threshold, and the third preset threshold is greater than the second preset threshold; the fan 5 turning control module is used for controlling the fan 5 to rotate reversely under the condition that the turning direction of the conductor rotor 15 is not consistent with the air flow direction at the first air outlet nozzle 20.
The acquisition of the rotation direction of the conductor rotor 15 can be realized by acquiring the rotation direction of the output shaft of the motor 17, the rotation direction of the fan 5 when the air flow flows out from the first air outlet pipe 3 and flows back through the second air outlet pipe 4 is regarded as a forward direction, the rotation direction of the fan 5 when the air flow flows out from the second air outlet pipe 4 and flows back through the first air outlet pipe 3 is regarded as a reverse direction, and the forward direction and the reverse direction respectively correspond to the rotation direction of the conductor rotor 15, so that the subsequent rotation direction adjustment of the fan 5 is facilitated; and then can accelerate the circulation velocity of air current, further improve the cooling effect.
Various implementations of the systems and techniques described here can be realized in digital electronic circuitry, integrated circuitry, application specific ASICs (application specific integrated circuits), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.
These computer programs (also known as programs, software applications, or code) include machine instructions for a programmable processor, and may be implemented using high-level procedural and/or object-oriented programming languages, and/or assembly/machine languages. As used herein, the terms "machine-readable medium" and "computer-readable medium" refer to any computer program product, apparatus, and/or device (e.g., magnetic discs, optical disks, memory, programmable Logic Devices (PLDs)) used to provide machine instructions and/or data to a programmable processor, including a machine-readable medium that receives machine instructions as a machine-readable signal. The term "machine-readable signal" refers to any signal used to provide machine instructions and/or data to a programmable processor.
To provide for interaction with a user, the systems and techniques described here can be implemented on a computer having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) by which a user may provide input to the computer. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), and the Internet.
It should be understood that various forms of the flows shown above, reordering, adding or deleting steps, may be used. For example, the steps described in the present application may be executed in parallel, sequentially, or in different orders, and the present invention is not limited thereto as long as the desired results of the technical solutions disclosed in the present application can be achieved.
The above-described embodiments should not be construed as limiting the scope of the present application. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. Circulating water pump economizer system, its characterized in that includes:
a water pump body (1);
the permanent magnet speed regulator (2) comprises a conductor rotor (15), a permanent magnet rotor (16) and a regulator, wherein the conductor rotor (15) is used for being mounted on an output shaft of an external motor (17), and the permanent magnet rotor (16) is mounted on a pump shaft of the water pump body (1);
the electric actuator is used for controlling the regulator to regulate the meshing area between the conductor rotor (15) and the permanent magnet rotor (16);
the first air outlet pipe (3) is arranged around the conductor rotor (15), one side, far away from the conductor rotor (15), of the first air outlet pipe (3) is communicated with a first branch pipe (18), and one side, close to the conductor rotor (15), of the first air outlet pipe (3) is provided with a plurality of first air outlet nozzles (20);
the second air outlet pipe (4) is arranged around the conductor rotor (15), the first air outlet pipe (3) and the second air outlet pipe (4) are respectively arranged on two sides of the conductor rotor (15), one side, far away from the conductor rotor (15), of the second air outlet pipe (4) is communicated with a second branch pipe (19), and one side, close to the conductor rotor (15), of the first air outlet pipe (3) is provided with a plurality of second air outlet nozzles (21);
the air outlet end of the fan (5) is communicated with the first branch pipe (18), and the air inlet end of the fan (5) is communicated with the second branch pipe (19);
a first cooling chamber (6), said first branch (18) being partially located inside the first cooling chamber (6);
a second cooling chamber (7), said second branch (19) being located partly inside the second cooling chamber (7);
a water outlet pipeline of the water pump body (1) is communicated with a main flow pipe (8), a first shunt pipe (9) and a second shunt pipe (10), the first shunt pipe (9) is communicated with a first cooling chamber (6), the second shunt pipe (10) is communicated with a second cooling chamber (7), a first electric valve (11) is installed on the first shunt pipe (9), and a second electric valve (12) is installed on the second shunt pipe (10);
the first cooling chamber (6) is communicated with a first water outlet pipe (13), and the second cooling chamber (7) is communicated with a second water outlet pipe (14);
the flow detection meter is used for detecting the current flow of the main flow pipe (8);
a temperature sensor for detecting a temperature value of the conductor rotor (15) and generating a temperature change rate per unit time;
a controller, comprising:
the strategy generating unit is used for generating an adjusting strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold;
and the adjusting unit is used for adjusting the meshing area and the opening and closing states of the first electric valve (11) and the second electric valve (12) according to an adjusting strategy.
2. The energy saving system of the circulating water pump of claim 1, wherein the strategy generating unit comprises:
the first strategy generation subunit is used for generating a first adjustment strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold and is lower than a second preset threshold; the adjusting strategy comprises an adjusted meshing area and an opening state of the first electric valve (11), and the second preset threshold is larger than the first preset threshold;
the second strategy generation subunit is used for generating a second adjustment strategy according to the current flow and the temperature change rate under the condition that the temperature change rate exceeds a first preset threshold and is higher than a second preset threshold; the adjusting strategy comprises the adjusted meshing area, the first electric valve (11) is in an opening state, and the second electric valve (12) is in an opening state.
3. The energy-saving system of the circulating water pump as claimed in claim 2, wherein the spraying directions of the plurality of first air outlet nozzles (20) and the plurality of second air outlet nozzles (21) are all towards the same side of the conductor rotor (15).
4. The circulating water pump economizer system of claim 3 wherein the controller further comprises:
a steering acquisition module for acquiring steering of the conductor rotor (15) in the case where the rate of change of temperature exceeds a third preset threshold, the third preset threshold being greater than the second preset threshold;
and the fan (5) steering control module is used for controlling the fan (5) to rotate reversely under the condition that the steering of the conductor rotor (15) is inconsistent with the direction of the air flow at the first air outlet nozzle (20).
5. The energy-saving system of the circulating water pump as claimed in claim 4, wherein one end of the first water outlet pipe (13) is communicated with the first cooling chamber (6), and the other end is communicated with the second cooling chamber (7).
6. The energy-saving system of the circulating water pump as claimed in claim 1, wherein the diameter of the first water outlet pipe (13) is gradually narrowed from one end communicated with the first cooling chamber (6) to the other end.
7. The energy-saving system of the circulating water pump as claimed in claim 1, wherein the first water outlet pipe (13) is communicated with one end of the first cooling chamber (6) higher than the other end.
8. The energy-saving system of the circulating water pump of claim 1, wherein the generating of the adjustment strategy according to the current flow and the temperature change rate comprises:
and inquiring a corresponding adjustment strategy in a preset inquiry library according to the current flow and the temperature change rate.
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| CN202211163964.9A CN115425802B (en) | 2022-09-23 | 2022-09-23 | Circulating water pump economizer system |
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| CN202211163964.9A CN115425802B (en) | 2022-09-23 | 2022-09-23 | Circulating water pump economizer system |
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