CN201874040U - Constant-pressure water supply equipment - Google Patents
Constant-pressure water supply equipment Download PDFInfo
- Publication number
- CN201874040U CN201874040U CN 201020607806 CN201020607806U CN201874040U CN 201874040 U CN201874040 U CN 201874040U CN 201020607806 CN201020607806 CN 201020607806 CN 201020607806 U CN201020607806 U CN 201020607806U CN 201874040 U CN201874040 U CN 201874040U
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- water supply
- supply equipment
- water pump
- permanent
- constant pressure
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- Control Of Positive-Displacement Pumps (AREA)
Abstract
The utility model discloses constant-pressure water supply equipment, which comprises a water pump, a pressure sensor, a driving device and a control device, wherein the driving device is an alternative-current permanent-magnetic synchronous servo electric motor for receiving a control signal and for driving the water pump, the control device is a servo controller for controlling the water pump, and a shaft of the alternative-current permanent-magnetic synchronous servo electric motor is connected with a shaft of the water pump to form an integrated structure. The water pump, the alternative-current permanent-magnetic synchronous servo electric motor and the servo controller are integrated into a whole to realize the automatic constant-pressure water supply. The constant-pressure water supply equipment has high efficiency and rapid reaction speed. Due to the adoption of the constant-pressure water supply equipment, the situation that a feedback control signal is interfered can be avoided, and the running precision of the pump can be improved.
Description
Technical field
The utility model relates to the supply equipment field, particularly relates to a kind of constant pressure water supply equipment.
Background technology
Constant pressure water supply is meant that at water supply network be water supply volume when changing, the way of supplying water that outlet pressure remains unchanged.The outlet pressure value of water supply network system is determined according to user's request.Traditional constant pressure water supply mode is to adopt facilities such as water tower, high water level case, air pressure tank to realize.This mode fluctuation of service, investment operating cost height.
In recent years, increasingly mature along with variable-frequency control technique, its obvious energy-saving effect and reliable and stable control mode have obtained using widely in water system.The constant pressure water supply system carries out stepless speed regulation to pump motor, according to water supply volume and variation in water pressure by microcomputer detect, computing, change pump rotary speed automatically and keep water pressure invariableness to satisfy the water requirement.Compare with traditional constant pressure water supply mode, have the advantage that system stability is reliable, automaticity is high.
In the technology of existing constant pressure water supply equipment, adopt three-phase AC asynchronous motor to make drive unit usually, frequency-variable controller is a control system of invariable pressure, frequency converter is placed in the switch board at a distance.Though this system can realize the purpose of constant pressure water supply, also there is following defective in it:
1, the efficient of three-phase AC asynchronous motor and power factor (PF) are low, and the high efficiency region of motor is narrow.Water pump operation is when low discharge or big flow, and efficiency of motor is lower, and energy consumption is more.
2, the frequency-variable controller system response time is slow, and frequency converter is that self-shield need be provided with time-delay.When user's water supply volume instantaneous variation was big, Frequency Converter Control can appear near the phenomenon of vibrating repeatedly the setting pressure.Frequency Converter Control needs the long period just can be stabilized in the pressure spot of setting.Make the output pressure fluctuation of water pump big, unstable like this, have a strong impact on the quality of water supply.Especially during the supporting use gas water heater of user, water temperature will be cold or hot, even can scald the user.
3, the overload capacity of three-phase AC asynchronous motor and frequency-variable controller is poor, and working environment, service condition require high, and three-phase AC asynchronous motor and frequency-variable controller damage easily.
4, constant pressure water supply system Installation and Debugging complexity, inconvenient operation.The distance of water pump and frequency-variable controller, the feedback control signal of water pump operation are subject to disturb.
The utility model content
The technical problems to be solved in the utility model is low in order to overcome in the prior art electric efficiency, the defective that the frequency-variable controller system response time is slow and feedback control signal is subject to disturb, provide a kind of constant pressure water supply equipment, by the integrated realization automatic constant-pressure of water pump, AC permanent-magnet synchronous servo motor and servo controller is supplied water.
The utility model solves above-mentioned technical problem by following technical proposals: a kind of constant pressure water supply equipment, comprise a water pump, a pressure sensor, a drive unit and a control device, its characteristics are, described drive unit is an AC permanent-magnet synchronous servo motor, described control device is a servo controller, the axle of described AC permanent-magnet synchronous servo motor and the axle of described water pump interconnect, the fastening top that is installed on described AC permanent-magnet synchronous servo motor of described servo controller forms integral structure.
Preferably, described constant pressure water supply equipment also comprises an encoder, and described encoder is arranged at the axle head of described AC permanent-magnet synchronous servo motor.Can realize the integrated setting of encoder and AC permanent-magnet synchronous servo motor like this, energy conversion efficiency is higher than the Frequency Converter Control mode.
Preferably, described encoder adopts optical-electricity encoder or magnetic encoder.Encoder can be monitored the rotating speed of described AC permanent-magnet synchronous servo motor, then rotary speed parameter is sent to described servo controller.
Preferably, described pressure sensor is installed on the described water pump.Shortened the transmission range between described pressure sensor and the described water pump, thereby reduced abnormal interference, the reliability of control system frock is improved.
Preferably, described servo controller is installed on the axial or side direction of described AC permanent-magnet synchronous servo motor.Wherein axial and side direction is conventional mounting means, is convenient to implement and loading and unloading.
Preferably, the axle of the axle of described AC permanent-magnet synchronous servo motor and described water pump connects by a clamping coupling clamping.Clamping coupling can make things convenient for and clamps described axle securely, and loading and unloading are very convenient.
Preferably, described servo controller is provided with an input signal interface, and sets an input interface and a communication interface.
Preferably, described input signal interface is connected with described pressure sensor.
Described input signal interface is used to connect described pressure sensor, receives the operating pressure parameter in the water pump; Described setting input interface is used to import artificial predefined force value, as with actual pressure parameter value relatively, thereby keep the required constant pressure value of described water pump operate as normal.Described communication interface can be realized the operational factor of the described water pump of far distance controlled.By above setting, described servo controller can on-the-spot be provided with the pressure parameter of water pump, or through communication by the central control room centralized Control, thereby realize automatic control water supply pressure constant state under effectively.
Preferably, all adopt bolt to connect between described water pump and described support, described support and described AC permanent-magnet synchronous servo motor and described AC permanent-magnet synchronous servo motor and the described servo controller.Bolt is the mode that is fastenedly connected commonly used, and it can reach fastening strength preferably, plays firm effect.
Positive progressive effect of the present utility model is:
1, configuration AC permanent-magnet synchronous servo motor efficient height, the high efficient area field width.The AC servo controller adopts encoder, controls motor speed with the periodic Control technology, and energy conversion efficiency is higher than frequency converter variable frequency control mode.Make like this and can be entire pump unit efficiency height the user and reduce running cost, energy conservation.
2, AC servo controller response speed is fast, precision is high, and what also can instantaneously keep-up pressure when user's water supply volume instantaneous variation is big is constant.Can satisfy the user to the high degree of comfort of water, the requirement of pinpoint accuracy.
3, the overload capacity height of AC permanent-magnet synchronous servo motor, more than 3 times of short time Nei Keda three-phase AC asynchronous motor.And the defencive function that servo controller can be provided with is many, makes that motor is reliable, the life-span is long.
4, setting pressure sensor on the pump housing.Sensor, servo controller, motor abut against together, have reduced abnormal signal and have disturbed control system functional reliability height.
5, pump, pressure sensor, AC permanent magnetic servo motor and servo controller integrated design can be equal to common water pump, realize " promptly inserting promptly logical ".Water pump can be controlled from closed loop, keeps constant pressure water supply automatically.
6, the user not only can set the output pressure of adjusting pump at the scene, operation, the monitoring of operation conditions and the collection of service data that also can remote central centralized Control pump.
Description of drawings
Fig. 1 is the elevation of the utility model constant pressure water supply equipment.
Fig. 2 is the left view of the utility model constant pressure water supply equipment.
Fig. 3 is the servo-control system schematic diagram of the utility model constant pressure water supply equipment.
The specific embodiment
Provide the utility model preferred embodiment below in conjunction with accompanying drawing, to describe the technical solution of the utility model in detail.
Fig. 1 is the elevation of the utility model constant pressure water supply equipment.
As shown in Figure 1, the utility model constant pressure water supply equipment comprises a water pump 1, an AC permanent-magnet synchronous servo motor 3 and a servo controller 4.
A support 2 is set up in the top of water pump 1, adopts bolton to be connected on the support 2 AC permanent-magnet synchronous servo motor 3.The axle of AC permanent-magnet synchronous servo motor 3 and the axle of water pump 1 are connected by a clamping coupling 5 clampings, thereby form integral structure.
As seen from Figure 1, support 2 is a hollow structure, and the front portion is a window, and the axle of AC permanent-magnet synchronous servo motor 3 and the axle of water pump 1 are connected in the hollow space of support 2.Clamping coupling 5 clamps described axle in this space, thereby AC permanent-magnet synchronous servo motor 3 and water pump 1 are connected as a single entity.This clamping coupling 5 can make things convenient for and clamps described axle securely, and loading and unloading are very convenient.
Servo controller 4 is installed on the top of AC permanent-magnet synchronous servo motor by bolton, its can be arranged on AC permanent-magnet synchronous servo motor 3 axially or side direction.Method for designing routinely, axially and side direction be conventional mounting means, be convenient to enforcement and load and unload.
Servo controller 4 is provided with an input signal joint 41, and sets an input interface 42 and a communication interface 43.
Set input interface 42 and be used to import artificial predefined force value, as with actual pressure parameter value relatively, thereby keep the required constant pressure value of water pump 1 operate as normal.
By above setting, servo controller 4 can on-the-spot be provided with the pressure parameter of water pump, or through communication by the central control room centralized Control, thereby realize automatic control water supply pressure constant state under effectively.
In addition, all adopt bolt to connect between pump 1 and support 2, support 2 and AC permanent-magnet synchronous servo motor 3 and AC permanent-magnet synchronous servo motor 3 and the servo controller 4.
Fig. 2 is the left view of the utility model constant pressure water supply equipment.
As shown in Figure 2, at the axle head of AC permanent-magnet synchronous servo motor 3 encoder 8 is set, it adopts optical-electricity encoder or magnetic encoder.Encoder 8 can be monitored the rotating speed of AC permanent-magnet synchronous servo motor 3, then rotary speed parameter is sent to described servo controller 4, thereby realizes the transmission of feedback information.Because AC permanent-magnet synchronous servo motor 3 and servo controller 4 axially fuse, therefore described motor and controller can cool off by a shared electric motor fan 7.
The servo-control system schematic diagram of Fig. 3 the utility model constant pressure water supply equipment.
As shown in Figure 3, the principle of constant pressure water supply equipment is: at first, by the user pressure set points that the automatic constant-pressure of water pump 1 supplies water is input to servo controller 4 in advance.Output pressure parameter when by the pressure sensor on the water pump 16 water pump 1 being worked is input to servo controller 4.Then, the rotary speed parameter of AC permanent-magnet synchronous servo motor 3 is input to servo controller 4 by encoder 8.Then, servo controller 4 compares calculating with the operating pressure parameter and the pressure set points of water pump 1, and output speed instructs to AC permanent-magnet synchronous servo motor 3 again, changes the force value of water pump 1 output by the rotating speed of adjusting Motor-Driven Pump.Pressure parameter after the change re-enters servo controller 4, repeats above comparison computational process again, up to till pressure set points is consistent.
Certainly, the motor rotor parts are by the rare-earth permanent magnet manufacturing, and stator coil adopts concentrates winding technology, can reduce operating iron loss of motor and copper loss significantly, has eliminated the aluminium consumption.
In sum, outstanding feature of the present utility model is: the pressure parameter that water pump is exported in the running is transferred to servo controller by the pressure sensor collection on the pump housing.The operating parameters of AC permanent-magnet synchronous servo motor is transferred to servo controller by the encoder collection.The instant output pressure of servo controller contrast water pump and the setting pressure of water pump, the variation of this motor operation speed of closed-loop control, thus guarantee the constant of pump output pressure.
Though more than described the specific embodiment of the present utility model, it will be understood by those of skill in the art that these only illustrate, protection domain of the present utility model is limited by appended claims.Those skilled in the art can make numerous variations or modification to these embodiments under the prerequisite that does not deviate from principle of the present utility model and essence, but these changes and modification all fall into protection domain of the present utility model.
Claims (9)
1. constant pressure water supply equipment, comprise a water pump, a pressure sensor, a drive unit and a control device, it is characterized in that, described drive unit is one to be used to the AC permanent-magnet synchronous servo motor that receives control signal and drive described water pump, described control device is one to be used for the servo controller of control of pump, the axle of described AC permanent-magnet synchronous servo motor and the axle of described water pump interconnect, and form integral structure.
2. constant pressure water supply equipment as claimed in claim 1 is characterized in that described constant pressure water supply equipment also comprises an encoder, and described encoder is arranged at the axle head of described AC permanent-magnet synchronous servo motor.
3. constant pressure water supply equipment as claimed in claim 2 is characterized in that, described encoder adopts optical-electricity encoder or magnetic encoder.
4. constant pressure water supply equipment as claimed in claim 1 is characterized in that described pressure sensor is installed on the described water pump.
5. constant pressure water supply equipment as claimed in claim 1 is characterized in that, described servo controller is installed on the axial or side direction of described AC permanent-magnet synchronous servo motor.
6. constant pressure water supply equipment as claimed in claim 1 is characterized in that, the axle of described AC permanent-magnet synchronous servo motor and the axle of described water pump connect by a clamping coupling clamping.
7. constant pressure water supply equipment as claimed in claim 1, it is characterized in that described servo controller is provided with the communication interface that setting input interface and that an input signal interface, that is used to receive the operating pressure parameter in the water pump is used to import artificial predefined force value can be realized the operational factor of the described water pump of far distance controlled.
8. constant pressure water supply equipment as claimed in claim 7 is characterized in that, described input signal interface is connected with described pressure sensor.
9. as any described constant pressure water supply equipment of claim 1-8, it is characterized in that, all adopt bolt to connect between described water pump and described support, described support and described AC permanent-magnet synchronous servo motor and described AC permanent-magnet synchronous servo motor and the described servo controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020607806 CN201874040U (en) | 2010-11-15 | 2010-11-15 | Constant-pressure water supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020607806 CN201874040U (en) | 2010-11-15 | 2010-11-15 | Constant-pressure water supply equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874040U true CN201874040U (en) | 2011-06-22 |
Family
ID=44161965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020607806 Expired - Fee Related CN201874040U (en) | 2010-11-15 | 2010-11-15 | Constant-pressure water supply equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874040U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359807A (en) * | 2011-08-08 | 2012-02-22 | 天津大学 | Control scheme for flow stability of liquid flow device |
| CN109610553A (en) * | 2018-10-31 | 2019-04-12 | 南方泵业智水（杭州）科技有限公司 | A kind of full frequency-changing water supply device of permanent magnet synchronous motor driving |
| US11703051B2 (en) | 2019-02-12 | 2023-07-18 | Terzo Power Systems, LLC | Valveless hydraulic system |
-
2010
- 2010-11-15 CN CN 201020607806 patent/CN201874040U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102359807A (en) * | 2011-08-08 | 2012-02-22 | 天津大学 | Control scheme for flow stability of liquid flow device |
| CN109610553A (en) * | 2018-10-31 | 2019-04-12 | 南方泵业智水（杭州）科技有限公司 | A kind of full frequency-changing water supply device of permanent magnet synchronous motor driving |
| US11703051B2 (en) | 2019-02-12 | 2023-07-18 | Terzo Power Systems, LLC | Valveless hydraulic system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110622 Termination date: 20111115 |