CN2777068Y - Negative pressure free type tap water supply equipment - Google Patents
Negative pressure free type tap water supply equipment Download PDFInfo
- Publication number
- CN2777068Y CN2777068Y CN 200520082210 CN200520082210U CN2777068Y CN 2777068 Y CN2777068 Y CN 2777068Y CN 200520082210 CN200520082210 CN 200520082210 CN 200520082210 U CN200520082210 U CN 200520082210U CN 2777068 Y CN2777068 Y CN 2777068Y
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- CN
- China
- Prior art keywords
- water
- tap water
- water supply
- pressure sensor
- user
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a tap water supply device without negative pressure, which belongs to the field of water supply equipment of a municipal tap water network, wherein a tap water supply network is connected with a water input pipe of a water pump unit; a water input pressure sensor is arranged in the tap water supply network; the water pump unit is connected with a user water input pipe by a check valve; the tap water supply network is connected with the user water input pipe by the check valve; a water output pressure sensor is arranged in the user water input pipe; the water output pressure sensor and the water input pressure sensor are respectively and electrically connected with a signal input end of an MUC central controller by a PID regulator. A signal output end of the MUC central controller controls power supply of the water pump unit to be switched on or off by contacts of a relay circuit.
Description
Technical field
The utility model relates to the water supply facilities field of city tap-water net, and especially a kind of tap water does not have negative pressure intelligence waterworks.
Background technology
At present, because the urban skyscraper scale constantly enlarges, aspect solution social production and human settlements water, the safety of water supply network and the unnecessary waste of the energy are considered in the supply of city tap-water, and its ductwork pressure can not be too high.Conventional method of supplying water is: each is independently produced, the supporting reservoir of life building area and supercharging water supply facilities, but the huge reservoir of these quantity makes the former tax pressure of tap water pipe network discharge again in order to store tap water, cause huge waste, and be subject to secondary pollution because of reservoir.In addition, also has a kind of tap water water supply facilities, its structure is: the tap water supply pipe network is connected with the water inlet of no negative pressure pressure regulating tank, be provided with the intake pressure sensor in user's water inlet pipe, the delivery port of no negative pressure pressure regulating tank is connected with the water inlet pipe of water pump assembly, the discharge pressure sensor is electrically connected with the signal input part of MUC central controller, the signal output part of MUC central controller is through the on/off of the contact of relay control of pump group, this waterworks cause negative pressure for easily the tap water pipe network, make the pressure of tap water pipe network produce bigger fluctuation.
Summary of the invention
In order to overcome the technical deficiency of existing tap water supply equipment, the utility model provides a kind of tap water not have the negative pressure automatic water supply equipment, this water supply facilities does not need the user to build reservoir, upper water box and flexible formula does not have the negative pressure water tank, causes negative pressure and big pressure oscillation can for when equipment moves the tap water pipe network yet.
The technical scheme that its technical problem that solves the utility model adopts is: the tap water supply pipe network is connected with the water inlet pipe of water pump assembly, be provided with the intake pressure sensor in the tap water supply pipe network, water pump assembly links to each other with user's water inlet pipe through non retern valve, the tap water supply pipe network connects user's water inlet pipe through non retern valve, be provided with the discharge pressure sensor in user's water inlet pipe, discharge pressure sensor and intake pressure sensor are electrically connected through the signal input part of PID adjuster with the MUC central controller respectively, and the signal output part of MUC central controller is through the on/off of the contact of relay circuit control of pump unit.
The utility model also can be realized by following measure: the water side of non retern valve is connected with the discharge pressure regulating tank.
The beneficial effects of the utility model are that not needing the user to build reservoir, upper water box and flexible formula does not have negative pressure water storage regulating tank, causes negative pressure and big pressure oscillation can for when supplying water operation the tap water pipe network yet, simple in structure.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a connected mode schematic diagram of the present utility model.
Fig. 3 is a schematic block circuit diagram of the present utility model.
1. water pump assemblies among the figure, 2. intake pressure sensor, 3. discharge pressure sensor, 4. discharge pressure regulating tank, 5. switch board, 6. gate valve, 7. non retern valve, 8. tap water pipe network, 9. user's water inlet pipe, 10.A/D change-over circuit, 11.PID adjuster, 12.PID adjuster, 13.D/A change-over circuit, 14.MCU central controller, 15.I/O interface circuit, 16. photoelectricity coupling circuits, 17. frequency transformation output module, 18. relay circuit, 19.AC power supply, 20.DC power supply, 21.A/D change-over circuit, 22.I/O interface circuit, 23. keyboards, 24. displays.
The specific embodiment
At Fig. 1, Fig. 2, among Fig. 3, tap water supply pipe network 8 is connected through the water inlet pipe of gate valve 6 with water pump assembly 1, be provided with intake pressure sensor 2 in the tap water supply pipe network 8, water pump assembly 1 links to each other with user's water inlet pipe 9 through non retern valve 7, tap water supply pipe network 8 connects user's water inlet pipe 9 respectively through non retern valve 7, the water side of non retern valve 7 is connected with discharge pressure regulating tank 4, be provided with discharge pressure sensor 3 in user's water inlet pipe 9, discharge pressure sensor 3 and intake pressure sensor 2 respectively with two inputs of A/D change-over circuit 10, two outputs of A/D change-over circuit 10 are respectively through PID adjuster 11, PID adjuster 12 is connected with D/A change-over circuit 13, two outputs of D/A change-over circuit 13 are electrically connected with the signal input part of MUC central controller 14, and the signal output part of MUC central controller 14 is through the on/off of the contact of relay circuit 18 control of pump unit 1.Connected mode between the utility model MUC central controller 14 and I/O interface circuit 15, photoelectricity coupling circuit 16, frequency transformation output module 17, relay circuit 18, AC power supplies 19, DC power supply 20, A/D change-over circuit 21, I/O interface circuit 22, keyboard 23, the display 24 is that those of ordinary skill in the art is known public, here repeated description no longer, the electronic component of the utility model except that intake pressure sensor 2, discharge pressure sensor 3 all is installed in the switch board 5.
The utility model discharge pressure sensor 3 detects pressure and is lower than big flow set pressure P 1 (being service pressure) in the control circuit, at this moment, after the water outlet PID adjuster 12 of controller retrieves the signal of discharge pressure sensor 3, adjust through computing, and increase signal frequently for 17 outputs of frequency transformation output module, the variable pump rotating speed in the water pump assembly 1 is increased, when pressure is raised to discharge pressure P1, the variable pump rotary speed no longer increases, and stable operation.When user's water supply volume increases, a variable pump insufficient water, pressure descends, a constant displacement pump in the water pump assembly 1 starts, variable pump slows down and is stabilized in the rotating speed at random of P1 value, if when user's water supply volume continue to increase greater than the water yield of two water pumps, second constant displacement pump started (present embodiment is selected three water pumps for use), another rotating speed at random that variable pump is stabilized in the P1 value again.When user's water supply volume reduces, discharge pressure is greater than the pressure P of setting 1, the PID adjuster 12 of control circuit is done to slow down and is regulated, when variable pump is reduced to invalid rotating speed, when discharge pressure still was higher than P1, first constant displacement pump was out of service, variable pump speedup voltage regulation operation behind certain rotating speed, if user's water supply volume is during less than two water pump outputs, second constant displacement pump is out of service.When user's night or daytime the low discharge water, user's water supply volume very little (or stopping water), has only the variable pump operation, and when rotating speed is very low, the long-time invalid operation of variable pump is rather consumed energy, this moment, control circuit can be identified as the low discharge water state, and give the frequency transformation output module 17 output speedup signals, the variable pump rotating speed increases, discharge pressure rises, when reaching vapour-pressure type discharge pressure regulating tank 4 setting pressure P2, variable pump is out of service, and this moment, user's water was the volume adjusted water of discharge pressure regulating tank 4, variable pump works in the start and stop state, discharge pressure is maintained between the P1-P2, only big the user, in during the flow water, the utility model just returns to P1 pressure constant-pressure operation.When no negative pressure threshold pression P0 that intake pressure is lower than that Running-water Company allows, the utility model can be identified as into water decompression state, after water inlet PID adjuster 11 retrieves the signal of intake pressure sensor 2, and carry out counter regulation, make the constant displacement pump that has started out of service, variable pump runs slowly, reduce output, make intake pressure maintain the P0 setting value all the time, it is out of service in the following variations per hour pump of idling frequency to work long hours at variable pump, when water inlet pipe pressure recovers just often, variable pump continues operation.When the intake pressure of tap water supply pipe network 8 during greater than P1, water pump assembly 1 is out of service automatically, and user's water inlet pipe 9 is directly supplied with by tap water supply pipe network 8.The utility model reaches the circular flow that sets running time during the time when variable pump, and variable pump moves after voluntarily and changes pump operation, thereby can play the effect of protection water pump, prevents some water pump overload operations.
Claims (2)
1, a kind of tap water no-negative pressure water supplier, be provided with the tap water supply pipe network, it is characterized in that: the tap water supply pipe network is connected with the water inlet pipe of water pump assembly, be provided with the intake pressure sensor in the tap water supply pipe network, water pump assembly links to each other with user's water inlet pipe through non retern valve, the tap water supply pipe network connects user's water inlet pipe through non retern valve, be provided with the discharge pressure sensor in user's water inlet pipe, discharge pressure sensor and intake pressure sensor are electrically connected through the signal input part of PID adjuster with the MUC central controller respectively, and the signal output part of MUC central controller is through the on/off of the contact of relay circuit control of pump unit.
2,, it is characterized in that the water side of said non retern valve is connected with the discharge pressure regulating tank according to the described tap water no-negative pressure water supplier of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520082210 CN2777068Y (en) | 2005-04-04 | 2005-04-04 | Negative pressure free type tap water supply equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520082210 CN2777068Y (en) | 2005-04-04 | 2005-04-04 | Negative pressure free type tap water supply equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2777068Y true CN2777068Y (en) | 2006-05-03 |
Family
ID=36744452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520082210 Expired - Fee Related CN2777068Y (en) | 2005-04-04 | 2005-04-04 | Negative pressure free type tap water supply equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2777068Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111980106A (en) * | 2020-08-17 | 2020-11-24 | 惠州市城乡建筑工程有限公司 | Municipal water supply pipeline system |
-
2005
- 2005-04-04 CN CN 200520082210 patent/CN2777068Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111980106A (en) * | 2020-08-17 | 2020-11-24 | 惠州市城乡建筑工程有限公司 | Municipal water supply pipeline system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |