CN203684328U - Water supply system - Google Patents
Water supply system Download PDFInfo
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- CN203684328U CN203684328U CN201320891752.2U CN201320891752U CN203684328U CN 203684328 U CN203684328 U CN 203684328U CN 201320891752 U CN201320891752 U CN 201320891752U CN 203684328 U CN203684328 U CN 203684328U
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- 238000001514 detection method Methods 0.000 claims description 6
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- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
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- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- 238000011105 stabilization Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
The utility model provides a water supply system. The water supply system comprises a tap water pipe network, a flow stabilizing tank, a frequency converter, a water pump unit, a secondary water supply pipe network, a first water outlet pipe and a second water outlet pipe, wherein the flow stabilizing tank and the water pump unit are connected through the first water outlet pipe, and the water pump unit and the secondary water supply pipe network are connected through the second water pipe. The water supply system further comprises an inlet end pressure sensor, an outlet end pressure sensor and a controller, wherein the inlet end pressure sensor is arranged on the first water outlet pipe, the outlet end pressure sensor is arranged on the second water outlet pipe, and the controller is used for outputting signals for controlling the frequency inverter to reduce output frequency when the pressure of the first water outlet pipe is smaller than a non-negative pressure value. Water can be continually supplied to the secondary water supply pipe network by the water supply system when the pressure of the tap water pipe network is smaller than the non-negative pressure value and is larger than zero, in this way, a part of users can use water continually in water shortage or low pressure, and the phenomenon that all downstream users do not have water to use at all can be avoided.
Description
Technical field
The utility model relates to supply equipment technical field, relates in particular a kind of water system.
Background technology
In existing water system, in order to realize without negative pressure or to laminate for water state, at tap water pipe network delivery port, steady-flow tank is set, a kind of pattern is that liquid level detecting switch is set in steady-flow tank, when tap water pipe network lack of water or cut off the water, while causing in steady-flow tank that water level is lower than certain value, liquid level detecting switch passes to the signal detecting the controller of water system, water pump assembly quits work, and makes water system no longer from tap water pipe network water suction, thereby avoids producing negative pressure.
Another kind of pattern is for guaranteeing that tap water pipe network is without negative pressure, set one of tap water pipe network without negative pressure force value, setting pressure switch on the outlet conduit of steady-flow tank, electro connecting pressure gauge or pressure sensor, detect and use water spot hydraulic pressure, when the force value detecting be greater than setting without negative pressure force value time, water system normal water supply, when the force value detecting lower than set without negative pressure force value time, pressure switch, electro connecting pressure gauge or pressure sensor pass to the signal detecting the controller of water system, thereby controlling water pump assembly quits work, avoid tap water pipe network to occur negative pressure.
Be water system of the prior art, not only in the time that tap water pipe network is cut off the water, user is thoroughly anhydrous available, when tap water pipe network lack of water or pressure are when low, also can cause water pump assembly to quit work, and causes user thoroughly anhydrous available.
Utility model content
In view of this, the utility model provides a kind of water system, to solve in prior art when tap water pipe network lack of water or pressure is low or the water supply flow of tap water pipe network during lower than the water supply flow of water pump or user's water supply volume, cause booster pump to quit work, cause thoroughly anhydrous available problem of user.
For achieving the above object, the utility model provides following technical scheme:
A kind of water system, comprising:
There is the steady-flow tank of water inlet and delivery port;
Connect the tap water pipe network of the water inlet of described steady-flow tank, connect the first outlet pipe of the delivery port of described steady-flow tank;
Connect frequency converter and the water pump assembly of described the first outlet pipe, connect the secondary water-supply pipe network of described water pump assembly;
Between described secondary water-supply pipe network and water pump assembly and connect the second outlet pipe of described secondary water-supply pipe network;
Also comprise:
Be arranged at the entrance point pressure sensor on described the first outlet pipe;
Be arranged at the port of export pressure sensor on described the second outlet pipe;
Controller, there is signals collecting port and signal controlling port, described signals collecting port is connected with port of export pressure sensor with described entrance point pressure sensor, gather respectively the pressure signal of the first outlet pipe and the pressure signal of the second outlet pipe, described signal controlling port is connected with described frequency converter, in the time that the pressure of the first outlet pipe is less than without negative pressure force value, the signal of described frequency converter reduction output frequency is controlled in output.
Preferably, the line between described frequency converter and described controller is data signal line.
Preferably, described frequency converter is ACS510 Series Frequency Converter.
Preferably, also comprise the A.C. contactor being connected with described water pump assembly with described controller, the line breaker being connected with described controller and the motor heat overload relay being connected with described controller.
Preferably, described line breaker inside has additional auxiliary contact, for detection of the running status of water pump in water pump assembly.
Preferably, on described steady-flow tank, be also provided with negative pressure inhibition device.
Preferably, described steady-flow tank bottom is also provided with exhaust-valve.
Preferably, in described water pump assembly, each water pump is also connected with by-pass line, on described by-pass line, is provided with backflow preventer.
Preferably, between described port of export pressure sensor and described secondary water-supply pipe network, also comprise air pressure diaphragm tube.
Preferably, also comprise the man-machine interface being connected with described controller, and the Switching Power Supply being connected with described man-machine interface.
Known via above-mentioned technical scheme, the water system that the utility model provides, in described water system with on tank connected the first outlet pipe of current stabilization, increase the entrance point pressure sensor that detection tap water pipe network pressure is set, in the time that the force value of tap water pipe network is greater than setting without negative pressure force value, described water system normal water supply; When tap water pipe network lack of water or pressure low, cause tap water pipe network pressure entrance point pressure sensor force value lower than in controller set without negative pressure force value, but when non-vanishing, controller reduces the target operating pressure of water system, and then make frequency converter regulate water pump assembly work, reduce the water yield that water system provides for secondary water-supply pipe network, and do not stop water pump assembly work, make most of user have water to use, and the anhydrous use of minority certain customers, or minority certain customers are low by water pressure, other users are unaffected by water pressure; In the time that the force value of tap water pipe network approaches zero, controller just stops water pump assembly work, makes the thorough anhydrous use of user.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, other accompanying drawing can also be provided according to the accompanying drawing providing.
The product structure schematic diagram of a kind of water system that Fig. 1 provides for the utility model embodiment;
The product structure block diagram of a kind of water system that Fig. 2 provides for the utility model embodiment.
The specific embodiment
Just as described in the background section, water system of the prior art, not only in the time that tap water pipe network is cut off the water, user is thoroughly anhydrous available, when tap water pipe network lack of water or pressure is low or the water supply flow of tap water pipe network during lower than the water supply flow of water pump or user's water supply volume, also can cause water pump assembly to quit work, cause downstream user thoroughly anhydrous available.
Inventor finds, existing water system is for guaranteeing that tap water pipe network is thoroughly without negative pressure, arrange without negative pressure force value in water system inside, when the pressure of pipeline between water system and tap water pipe network is less than described during without negative pressure force value, pressure sensor provides signal, stop water pump assembly work, thereby stop providing water to user, and then guarantee not occur negative pressure in tap water pipe network.
But now, because the pressure in tap water pipe network is not zero, be that tap water pipe network can also continue to provide a part of user's water, but due to the feature of water system in prior art, cannot realize in tap water pipe network lack of water or pressure low, but be greater than at 1 o'clock, still provide water to user, avoid all users all to cut off the water.
Based on this, inventor finds through research, and a kind of water system is provided, and comprising:
There is the steady-flow tank of water inlet and delivery port;
Connect the tap water pipe network of the water inlet of described steady-flow tank, connect the first outlet pipe of the delivery port of described steady-flow tank;
Connect frequency converter and the water pump assembly of described the first outlet pipe, connect the secondary water-supply pipe network of described water pump assembly;
Between described secondary water-supply pipe network and described water pump assembly and connect the second outlet pipe of described secondary water-supply pipe network;
It is characterized in that, also comprise:
Be arranged at the entrance point pressure sensor on described the first outlet pipe;
Be arranged at the port of export pressure sensor on described the second outlet pipe;
Controller, there is signals collecting port and signal controlling port, described signals collecting port is connected with port of export pressure sensor with described entrance point pressure sensor, gather respectively the pressure signal of the first outlet pipe and the pressure signal of the second outlet pipe, described signal controlling port is connected with described frequency converter, in the time that the pressure of the first outlet pipe is less than without negative pressure force value, the signal of described frequency converter reduction output frequency is controlled in output.
From above-mentioned technical scheme, the water system that the utility model provides, on the first outlet pipe connecting at the delivery port of described water system steady-flow tank, the entrance point pressure sensor that detects tap water pipe network pressure is set, in the time that the force value of tap water pipe network is greater than setting without negative pressure force value, described water system normal water supply; When tap water pipe network lack of water or pressure low, cause the force value of tap water pipe network lower than setting without negative pressure force value, but when non-vanishing, controller reduces the target operating pressure of water system, and then make frequency converter regulate water pump assembly work, reduce the water yield that water system provides for secondary water-supply pipe network, and do not stop water pump assembly work, make most of user have water to use, and the anhydrous use of minority certain customers, or minority certain customers are low by water pressure, other users are unaffected by water pressure; In the time that the force value of tap water pipe network approaches zero, controller just stops water pump assembly work, makes the thorough anhydrous use of user.
It is more than the application's core concept, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
A lot of details are set forth in the following description so that fully understand the utility model, but the utility model can also adopt other to be different from mode described here and implement, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, and therefore the utility model is not subject to the restriction of following public specific embodiment.
Secondly, the utility model is described in detail in conjunction with schematic diagram, in the time that the utility model embodiment is described in detail in detail; for ease of explanation; represent that the sectional drawing of device architecture can disobey general ratio and do local amplification, and described schematic diagram is example, it should not limit the scope of the utility model protection at this.In addition in actual fabrication, should comprise, the three-dimensional space of length, width and the degree of depth.
Specifically describe below by embodiment the water system that the utility model provides.
The disclosed a kind of water system of the utility model embodiment, is illustrated in figure 1 the product structure figure of described water system, and wherein in figure, arrow is depicted as water (flow) direction.Described water system comprises: steady-flow tank 1, the water inlet of steady-flow tank 1 connects tap water pipe network 20, the delivery port of steady-flow tank 1 connects the first outlet pipe 2, the first outlet pipes 2 and connects frequency converter (not shown) and water pump assembly 4, and water pump assembly 4 is connected with secondary water-supply pipe network 30; Control the controller (not shown) that frequency converter and water pump assembly 4 are worked, between controller and secondary water-supply pipe network 30, be connected by the second outlet pipe 6; Be arranged on the first outlet pipe 2, and detect the entrance point pressure sensor 7 of tap water pipe network 20 pressure (being also the hydraulic pressure in described tap water pipe network); Be arranged on the second outlet pipe 6, and detect the port of export pressure sensor 8 of the pressure (being also secondary water-supply pipe network 30 pressure) of the second outlet pipe; Wherein, controller, according to the detection signal of the detection signal of entrance point pressure sensor 7 and port of export pressure sensor 8, is controlled frequency converter and is regulated water pump assembly 4 to work, to control the pressure of secondary water-supply pipe network 30.It should be noted that, the components and parts that comprise in control circuit, as frequency converter and controller are all arranged in electrical control cubicles 16.
Concrete, controller has signals collecting port and signal controlling port, described signals collecting port is connected with port of export pressure sensor with described entrance point pressure sensor, gather respectively the pressure of tap water pipe network and the pressure of secondary water-supply pipe network, described signal controlling port is connected with described frequency converter, in the time that the pressure of tap water pipe network is less than the pressure of secondary water-supply pipe network, the signal of described frequency converter reduction output frequency is controlled in output, described frequency converter reduces the operating number of booster pump in water pump assembly or reduces the rotating speed of booster pump, to reach the output that reduces supplying secondary water supply network, make the water yield of water system along with the hydraulic pressure in tap water pipe network or the water yield change, when thereby the hydraulic pressure that guarantees tap water pipe network is lower or the water yield is less, certain customers in secondary water-supply pipe network can also have water to use.
On steady-flow tank 1, be provided with negative pressure inhibition device 9, when the pressure in steady-flow tank 1 is during lower than an atmospheric pressure, negative pressure inhibition device 9 is opened automatically, and gas is entered in steady-flow tank 1, and the vacuum environment in steady-flow tank 1 is destroyed, and prevents that tap water pipe network 20 from being inhaled for negative pressure; In the time that steady-flow tank 1 internal pressure raises, negative pressure inhibition device 9 is discharged gas, makes to hold full water in steady-flow tank 1, and now, negative pressure inhibition device 9 is closed, and prevents overflow.Therefore, steady-flow tank 1 has the water storage function of water tank, in steady-flow tank 1, holds full water, can be used as make-up water source, in the time of tap water pipe network pressure decreased, also can realize normal water supply.
Steady-flow tank 1 bottom is also provided with exhaust-valve (not shown), for discharging sewage in steady-flow tank etc., to facilitate, described steady-flow tank is cleared up.
On the first outlet pipe 2 being connected with the delivery port of steady-flow tank 1, be provided with entrance point pressure sensor 7.In the time that water system is worked, entrance point pressure sensor 7 can detect the pressure that flows out water from steady-flow tank delivery port, also be the hydraulic pressure in tap water pipe network, and the force value detecting is sent to the controller being connected with entrance point pressure sensor, carry out logical operation for controller by specific program.
In addition, on the second outlet pipe 6 between water system and secondary water-supply pipe network 30, be also provided with port of export pressure sensor 8, wherein the second outlet pipe 6 is between water pump assembly 4 and secondary water-supply pipe network 30.Port of export pressure sensor 8 can detect secondary water-supply pipe network 30 users' hydraulic pressure, and the force value detecting is fed back to the controller being connected with port of export pressure sensor 8.
It should be noted that, in water system, also comprise that connected controller and frequency converter, controller are the control cores of water system, can completion logic computing and data processing, described controller and described frequency converter are all arranged in the electrical control cubicles 16 shown in Fig. 1.In the present embodiment, preferred described controller is PLC(Programmable Logic Controller, programmable logic controller (PLC)), described frequency converter is preferably ACS510 Series Frequency Converter, in the present embodiment, this is not limited.Connecting line between the present embodiment middle controller and frequency converter is preferably data signal line, thereby the circuit between controller and frequency converter can be combined, avoid occurring loaded down with trivial details circuit, make to occur the problems such as short circuit having larger potential safety hazard between circuit.
In the present embodiment, the first outlet pipe 2 connects frequency converter and water pump assembly 4, and wherein, water pump assembly 4 comprises many booster pumps, and water system can start or stop different booster pumps according to user's water supply volume, thereby reduces the energy consumption of booster pump.It should be noted that, in the control principle block diagram of described water system, as shown in Figure 2, between described booster pump and frequency converter, also comprise A.C. contactor 11, A.C. contactor 11 is connected with controller 5 simultaneously, can be in the time that booster pump go wrong or according to water system demand, stop or opening described booster pump.
Controller 5 is also connected with line breaker and motor heat overload relay (all not shown in figure), described line breaker and described motor heat overload relay are in the time finding that booster pump goes wrong, signal is passed to controller 5, so that controller 5 is made instruction to corresponding problem, thus the safe handling of assurance booster pump.In the present embodiment; described line breaker inside also has additional auxiliary contact; for detection of the state of booster pump in water pump assembly; when booster pump in water pump assembly goes wrong; can accurately judge any platform booster pump and go wrong, and breaker signal is sent to controller 5, so that controller 5 sends instruction to A.C. contactor corresponding to the booster pump going wrong; stop the operation of this booster pump, described booster pump is played a protective role.
It should be noted that, every booster pump one side of described water system also comprises one group of by-pass line, on by-pass line, be provided with backflow preventer 12, when the pressure of tap water pipe network normal, can offer user time, water offers user by by-pass line after steady-flow tank, thereby reduces the opening time of booster pump, reduces energy consumption.Backflow preventer 12 can prevent aqueous reflux, guarantees normal water supply.
Between the second outlet pipe 6 and secondary water-supply pipe network 30, also comprise air pressure diaphragm tube 13; air pressure diaphragm tube 13 has the effect of a small amount of water of storage; can the in the situation that of night or a small amount of water of other users, supply water; to avoid the frequent unlatching of frequency converter or booster pump, equally described booster pump is played a protective role.
For guaranteeing non-negative pressure water service system normal water supply, each water system has it specifically without negative pressure force value, in water system of the prior art, only on the outlet conduit of water system, pressure sensor is set, in the time that the pressure of tap water pipe network can meet user with water pressure and water supply volume requirement, normal water supply; At the pressure of tap water pipe network lower than described specific during without negative pressure force value, there is negative pressure for fear of tap water pipe network, pressure sensor on the outlet conduit of water system by signal feedback to controller, controller control frequency converter stops booster pump work, thereby make user anhydrous available, avoid booster pump transition water suction, cause tap water pipe network negative pressure.
While using the water system that the utility model provides, in the time that the pressure of tap water pipe network can meet user and requires by water pressure and water supply volume, normal water supply, and at the pressure of tap water pipe network lower than described specific without negative pressure force value, but be greater than at 1 o'clock, the water system that the utility model provides is not directly controlled booster pump and is quit work, but use the entrance point pressure sensor moment to detect the hydraulic pressure in tap water pipe network, and the target operating pressure value of default water system (being also that user uses water pressure preset value), make this target operating pressure value of user's water pressure actual value infinite approach, when the force value that the entrance point pressure sensor receiving at controller sends is greater than the target operating pressure value of described water system, system normal water supply, when the force value that the entrance point pressure sensor receiving at controller sends is less than the target operating pressure value of described water system, controller control frequency converter is adjusted booster pump work, reduce booster pump from water absorption in tap water pipe network, thereby reduce user's water supply volume, make certain customers cannot water or hydraulic pressure reduce, but most of user continues normal use, stablizing existing booster pump inlet pressure does not continue to decline, and then do not inhaled into negative pressure in assurance tap water pipe network, simultaneously user's pipe network (the secondary water-supply pipe network of mentioning in embodiment) hydraulic pressure value is fed back to controller by port of export pressure sensor above, along with tap water pipe network internal pressure constantly reduces, the force value that controller sends in real time according to entrance point pressure sensor and the force value of port of export pressure sensor Real-time Feedback, set new target operating pressure value, thereby maintaining certain customers has water to use, and the state of the anhydrous use of certain customers, until the force value that entrance point pressure sensor sends in real time approaches at 1 o'clock, controller sends the instruction that stops booster pump work to frequency converter and A.C. contactor, make booster pump stop supplying water.
It seems from the operating principle of above-mentioned water system, the water system that the utility model provides, can be at tap water pipe network pressure lower than without negative pressure force value, but be greater than at 1 o'clock, continue as a part of user water is provided, or only reduce a part of user's water hydraulic pressure, the normal water of other users, rather than directly booster pump is stopped, making all use anhydrous available per family, avoid meaningless cutting off the water.
It should be noted that, in order to realize better man-machine interaction dialogue, the man-machine interface 14 being connected with controller 5 is also provided in the electrical control cubicles 16 of the water system providing in the utility model, and the Switching Power Supply 15 being connected with man-machine interface 14, Switching Power Supply 15 can be converted into 220V alternating current 24V direct current, to facilitate the demonstration of man-machine interface 14.
In this manual, various piece adopts the mode of going forward one by one to describe, and what each part stressed is and the difference of other parts, between various piece identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple modification of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a water system, comprising:
There is the steady-flow tank of water inlet and delivery port;
Connect the tap water pipe network of the water inlet of described steady-flow tank, connect the first outlet pipe of the delivery port of described steady-flow tank;
Connect frequency converter and the water pump assembly of described the first outlet pipe, connect the secondary water-supply pipe network of described water pump assembly;
Between described secondary water-supply pipe network and water pump assembly and connect the second outlet pipe of described secondary water-supply pipe network;
It is characterized in that, also comprise:
Be arranged at the entrance point pressure sensor on described the first outlet pipe;
Be arranged at the port of export pressure sensor on described the second outlet pipe;
Controller, there is signals collecting port and signal controlling port, described signals collecting port is connected with port of export pressure sensor with described entrance point pressure sensor, gather respectively the pressure signal of the first outlet pipe and the pressure signal of the second outlet pipe, described signal controlling port is connected with described frequency converter, in the time that the pressure of the first outlet pipe is less than without negative pressure force value, the signal of described frequency converter reduction output frequency is controlled in output.
2. water system according to claim 1, is characterized in that, the line between described frequency converter and described controller is data signal line.
3. water system according to claim 1, is characterized in that, described frequency converter is ACS510 Series Frequency Converter.
4. water system according to claim 1, is characterized in that, also comprises the A.C. contactor being connected with described water pump assembly with described controller, the line breaker being connected with described controller and the motor heat overload relay being connected with described controller.
5. water system according to claim 4, is characterized in that, described line breaker inside has additional auxiliary contact, for detection of the running status of water pump in water pump assembly.
6. water system according to claim 1, is characterized in that, is also provided with negative pressure inhibition device on described steady-flow tank.
7. water system according to claim 1, is characterized in that, described steady-flow tank bottom is also provided with exhaust-valve.
8. water system according to claim 1, is characterized in that, in described water pump assembly, each water pump is also connected with by-pass line, on described by-pass line, is provided with backflow preventer.
9. water system according to claim 1, is characterized in that, between described port of export pressure sensor and described secondary water-supply pipe network, also comprises air pressure diaphragm tube.
10. water system according to claim 1, is characterized in that, also comprises the man-machine interface being connected with described controller, and the Switching Power Supply being connected with described man-machine interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891752.2U CN203684328U (en) | 2013-12-31 | 2013-12-31 | Water supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891752.2U CN203684328U (en) | 2013-12-31 | 2013-12-31 | Water supply system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104929196A (en) * | 2015-04-29 | 2015-09-23 | 杭州美安物联科技有限公司 | Internet-of-Things based secondary water supply system |
| CN105133701A (en) * | 2015-09-28 | 2015-12-09 | 青岛三利中德美水设备有限公司 | Intelligent speed-adjusting no-negative-pressure water supply equipment, water supply system and water supply control method |
| CN105133702A (en) * | 2015-09-28 | 2015-12-09 | 青岛三利中德美水设备有限公司 | Non-negative-pressure water supply equipment, water supply system and water supply control method |
| CN105155628A (en) * | 2015-10-12 | 2015-12-16 | 王伐帝 | Water storage type non-negative-pressure water supply facility |
| CN105297836A (en) * | 2015-09-28 | 2016-02-03 | 青岛三利中德美水设备有限公司 | Electric control water-supply equipment with no pressure, water supply system and water supply control method |
| CN107687418A (en) * | 2017-08-28 | 2018-02-13 | 宁波德业变频技术股份有限公司 | It is a kind of new to be used for the water shortage decision method without flow sensor constant pressure water supply system |
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| CN109185170A (en) * | 2018-08-23 | 2019-01-11 | 青岛三利中德美水设备有限公司 | Without negative pressure water pump, water pump assemble method and its control method |
| CN109185169A (en) * | 2018-08-23 | 2019-01-11 | 青岛三利泵业有限公司 | Non-suction head water pump, water pump assemble method and its control method |
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| CN112982554A (en) * | 2021-03-15 | 2021-06-18 | 安徽海沃特水务股份有限公司 | Intelligent platform system with non-negative pressure water supply pipe |
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| CN104929196A (en) * | 2015-04-29 | 2015-09-23 | 杭州美安物联科技有限公司 | Internet-of-Things based secondary water supply system |
| CN105133701A (en) * | 2015-09-28 | 2015-12-09 | 青岛三利中德美水设备有限公司 | Intelligent speed-adjusting no-negative-pressure water supply equipment, water supply system and water supply control method |
| CN105133702A (en) * | 2015-09-28 | 2015-12-09 | 青岛三利中德美水设备有限公司 | Non-negative-pressure water supply equipment, water supply system and water supply control method |
| CN105297836A (en) * | 2015-09-28 | 2016-02-03 | 青岛三利中德美水设备有限公司 | Electric control water-supply equipment with no pressure, water supply system and water supply control method |
| CN105297836B (en) * | 2015-09-28 | 2017-05-10 | 青岛三利中德美水设备有限公司 | Electric control water-supply equipment with no pressure, water supply system and water supply control method |
| CN105133701B (en) * | 2015-09-28 | 2017-06-16 | 青岛三利中德美水设备有限公司 | Intelligent speed-regulating non-negative pressure water-supply installation, water system and water-supply control |
| CN105155628A (en) * | 2015-10-12 | 2015-12-16 | 王伐帝 | Water storage type non-negative-pressure water supply facility |
| CN107687418B (en) * | 2017-08-28 | 2019-03-01 | 宁波德业变频技术股份有限公司 | A kind of novel water shortage determination method for no flow sensor constant pressure water supply system |
| CN107687418A (en) * | 2017-08-28 | 2018-02-13 | 宁波德业变频技术股份有限公司 | It is a kind of new to be used for the water shortage decision method without flow sensor constant pressure water supply system |
| CN108049101A (en) * | 2017-10-30 | 2018-05-18 | 无锡小天鹅股份有限公司 | Water injection control system, method, cloud server and device for clothing processing |
| CN109185170A (en) * | 2018-08-23 | 2019-01-11 | 青岛三利中德美水设备有限公司 | Without negative pressure water pump, water pump assemble method and its control method |
| CN109185169A (en) * | 2018-08-23 | 2019-01-11 | 青岛三利泵业有限公司 | Non-suction head water pump, water pump assemble method and its control method |
| CN109281840A (en) * | 2018-08-23 | 2019-01-29 | 青岛三利泵业有限公司 | Non-suction head velocity fluctuation pump, water pump assemble method and its control method |
| CN109185170B (en) * | 2018-08-23 | 2023-08-11 | 青岛三利中德美水设备有限公司 | Non-negative pressure water pump, water pump assembling method and control method thereof |
| CN109185169B (en) * | 2018-08-23 | 2023-09-01 | 青岛三利泵业有限公司 | Suction-stroke-free water pump, water pump assembling method and control method thereof |
| CN112982554A (en) * | 2021-03-15 | 2021-06-18 | 安徽海沃特水务股份有限公司 | Intelligent platform system with non-negative pressure water supply pipe |
| CN114922250A (en) * | 2022-05-30 | 2022-08-19 | 惠州水务集团惠东水务有限公司 | Non-negative pressure water supply method and device |
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