CN2732846Y

CN2732846Y - Fully-automatic pressurized water-supplying device with cushion device for direct pipeline

Info

Publication number: CN2732846Y
Application number: CNU2003201320146U
Authority: CN
Inventors: 田建辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-08-15
Filing date: 2003-12-18
Publication date: 2005-10-12
Anticipated expiration: 2013-12-18

Abstract

The utility model provides a fully-automatic pressurized water-supplying device with a cushion device for direct pipelines. The utility model comprises a pipe network, a sealed water storage tank, a one-way negative pressure valve and a controller. The top part of the sealed water storage tank is provided with the one-way negative pressure valve. An inlet at one side of the lower part of the sealed water storage tank is communicated with the pipe network via a pipe fitting, an outlet at the other side is communicated with a water-outlet pipe fitting, and the other side is also provided with a water-tank pressure gauge connected with the controller. The controller for switching control mode is connected with a variable-frequency speed-regulating device. In order to keep the outlet pressure and the pressure of the water intake tank constant, the controller is used for switching control mode according to the water pressure. The device can fully utilize the excess pressure of the pipe network without additional burden on the pipe network, and the direct effect of the water pump on the pipe network is isolated. The hidden danger of contamination on tap water caused by underground tank is eliminated. The device can be operated full automatically without manual intervention, and an auxiliary pressure switch can improve the usability of the system.

Description

The direct pipeline secondary water supply of full-automatic band buffer

Technical field

The utility model relates to a kind of supply and drain water system, especially a kind of direct pipeline secondary water supply of the full-automatic band buffer that can control automatically.

Background technology

In existing water system, owing to worry swabbing to pipe network, general tap water pipe network does not allow direct pressurization, existing way is that the pipe network tap water is by underground conservation pool 8 pressure releases, utilize the pressurization of conventional pressurized pump 9 or frequency control secondary water supply then, be sent to high pressure pond or user's (see figure 1).

This mode, the residue hydraulic pressure of pipe network is bled off, and causes very big energy loss.Owing to be the open type pond, and generally be built in undergroundly, therefore, the tap water secondary pollution is inevitable.

The utility model content

The purpose of this utility model provides a kind of direct pipeline secondary water supply of full-automatic band buffer, can make full use of the surplus pressure of pipe network, and don't pipe network is produced added burden, and can isolate the direct influence of water pump to pipe network.System need not manual intervention according to main pipe water pressure situation fully automatic operation.

The utility model is achieved in that a kind of direct pipeline secondary water supply of full automatic band buffer, comprise pipe network, sealing water tank, unidirectional negative pressure valve and controller, described sealing water tank top is provided with unidirectional negative pressure valve, one side entrance, bottom of sealing water tank is communicated with pipe network by pipe fitting, the opposite side outlet is communicated with the water outlet pipe fitting, this side also is provided with the water pot pressure gauge and is connected with controller, and the controller that control model is switched is connected with RHVC.

The external RHVC of controller, motor operated valve, water pot pressure gauge, outlet pressure meter and pressure switch.Controller switches between the control model that with maintenance outlet pressure constant voltage and maintenance water inlet pressure tank constant voltage is purpose according to the intake pressure situation.

Described RHVC can replace with motor operated valve.

Described RHVC is connected with water pump, and the water pump of being controlled by RHVC can be a plurality of.

Advantage of the present utility model:

1, fully automatic operation: system is according to main pipe water pressure situation start-stop pump group, when intake pressure during greater than the minimum pressure that allows (by water pot upward pressure instrumentation amount and give controller, general hydraulic pressure jar pressure-fired such as the 1-2 rice hydraulic pressure of keeping), system is by the discharge pressure constant pressure water supply of setting, and pressure feedback is provided by the pump outlet pressure gauge.When main pipe pressure during less than the minimum pressure that allows; system is adjusted to the control model operation of the setting pressure that keeps water pot automatically; be unlikely to make water pot to produce negative pressure and damage water pump when tank deck negative pressure valve action back produces vaccuum phenomenon. when the main pipe fault or when cutting off the water, autostop.

2, energy-conservation: as to make full use of the surplus pressure of pipe network, and don't pipe network is produced added burden, and can isolate the direct influence of water pump to pipe network.Because ductwork pressure is utilized, therefore, the lift that is sent to head-tank or the required pressurization of user is lowered greatly, and for the general user, in 50 meters high, general ductwork pressure is between 20-30 rice.As with 25 meters calculating, then power saving rate can reach (50-25)/50=50%.

2, prevent secondary pollution:, prevented the pollution of tap water at underground tank because the pressure water pot that underground tank is closed replaces.

3, this device has all advantages of existing constant pressure water supply equipment, also can adopt the exit of pump valve to regulate hydraulic pressure, can the effective simplification system reduce cost.

Description of drawings

Accompanying drawing 1 is existing general sub-district hydrotechny structural representation;

Accompanying drawing 2 is the utility model structural representation;

Accompanying drawing 3 is two of the utility model structural representation;

1 pipe network, 2 sealing water tanks, 3 unidirectional negative pressure valves, 4 controllers, 5 water pot pressure gauges, 6 motor operated valves, 7 RHVCs, 8 underground conservation pools, 9 force (forcing) pumps, 10 outlet pressure meters, 11 pressure switches, 12 water pumps, 13 water outlet pipe fittings

The specific embodiment

As Fig. 2, shown in Figure 3, the utility model comprises pipe network 1, sealing water tank 2, unidirectional negative pressure valve 3 and controller 4, described sealing water tank 2 tops are provided with unidirectional negative pressure valve 3, one side entrance, bottom of sealing water tank 2 is communicated with pipe network 1 by pipe fitting, the opposite side outlet is communicated with water outlet pipe fitting 13, this side also is provided with water pot pressure gauge 5 and is connected with controller 4, and the controller 4 that control model is switched is connected with RHVC 7.

Described controller 4 external motor operated valves 6, outlet pressure meter 10 and pressure switch 11.Controller 4 switches between the control model that with maintenance outlet pressure constant voltage and maintenance water inlet pressure tank constant voltage is purpose according to the intake pressure situation.

Described RHVC 7 can replace with motor operated valve 6.

Described RHVC 7 is connected with water pump 12, and the water pump of being controlled by RHVC 7 12 can be a plurality of.

Below sketch its operating principle:

During operate as normal, pipe network 1 send water to sealing water tank 2, because sealing water tank 2 seals, the hydraulic pressure of pipe network 1 is held and utilizes, and water pump is sent to head-tank or user's the corresponding minimizing of lift, and power consumption is also corresponding to be reduced.(power output of water pump is proportional to pump head).Under this mode of operation, controller 4 is gathered the parameter on the water pump water outlet house steward outlet pressure meter 10, by the pressure constant pressure water supply of setting.It promptly is the control model of control variables with the water pump water outlet mouth pressure.

When user's water requirement during, has malleation in the sealing water tank 2 less than output; When user's water requirement during greater than output, sealing water tank 2 will be a negative pressure, not allow pipe network 1 directly pressurize, mainly be to worry that 12 pairs of pipe networks of water pump 1 produce to aspirate (negative pressure) phenomenons.

When sealing water tank 2 will produce negative pressure, unidirectional negative pressure valve 3 auto-actions, sealing water tank 2 is equivalent to the reservoir of an open type.Can not produce the phenomenon of suction pipe network.When unidirectional negative pressure valve 3 moves, because jar has certain height, therefore with respect to water inlet pipe network, jar or malleation.

In fact, when controller detects jar internal pressure less than the minimum pressure set, can regulate RHVC 7 or motor operated valve 6 automatically, keeping a jar internal pressure at least is pressure-fired.Be that system is transformed into hermetically sealed can pressure be the control model of control variables.Be failure to actuate to guarantee the phenomenon and the negative pressure valve that do not produce the suction pipe network.(in case negative pressure valve action, a large amount of gas enter and can make water pump produce damage water seal when cavitating strongly or finding time)

When the main pipeline network accident with when anhydrous, the operation of controller 4 automatic cut-off systems. the effect of delivery port pressure switch 11 is when water pot pressure gauge 5 and outlet pressure meter 10 faults, a reserve pressure control mode is provided, and the switch control mode of termination of pumping during turn on pump high pressure during low pressure, be unlikely to that system can't supply water when the pressure gauge fault.With regard to operation, this system is full automatic, need not manual intervention, and director demon is write by having the engineer who enriches operating experience, has higher intelligent and fault-tolerant ability.

Because the water absorption of this device also only is equivalent to the amount that pipe network supplies water to the open type reservoir under the least favorable situation, so this device can not cause any added burden of pipe network.

Because the cushioning effect of sealing water tank, the mechanism of water pump, pipe network (as vibration etc.) also be cushioned or isolate.

The volume of water tank depends on reaction time of robot control system(RCS), in time adjusts the water yield when promptly system detects jar interior drawdown, makes its turnover water balance.Because converter plant generally finished the startup of motor and do not produce dash current in 20 seconds, therefore, general tank volume is not less than that 30 seconds of system are specified to be gone out water capacity and get final product.Such as 100 cubes compression system per hour is equipped with 0.9 cubic metre jar get final product.

Controller detects into (tank pressure) and goes out (exit of pump) pressure, if jar interior malleation is then regulated exit of pump valve or converter plant, makes discharge pressure meet the setting requirement.In controller detects jar during negative pressure, the hydrostatic pressing that regulating system is its output to the maximum to keep jar internal pressure when just being canned full water.If regulating system goes wrong, unidirectional negative pressure valve action.Guarantee not aspirate pipe network.

Its good effect compared with prior art: with certain residential quarter is example: as 7 layers of sub-district high buildings, municipal ductwork pressure between 0.1-0.3Mpa, that is to say general just when the water of peak hydraulic pressure not enough.If but adopt general water booster system, and must establish underground tank, all users supply water and all need pressurize, and cause very big energy waste, also can cause secondary pollution.This device outlet pressure set point is 0.35Mpa, the most of the time 0.1-0.15Mpa that only need pressurize, and when controller clock is the late into the night and detects inlet pressure greater than 0.28Mpa when above, system's autostop is directly supplied water by municipal administration.

Claims

1, a kind of direct pipeline secondary water supply of full automatic band buffer, comprise pipe network, sealing water tank, unidirectional negative pressure valve and controller, it is characterized in that described sealing water tank top is provided with unidirectional negative pressure valve, one side entrance, bottom of sealing water tank is communicated with pipe network by pipe fitting, the opposite side outlet is communicated with the water outlet pipe fitting, this side also is provided with the water pot pressure gauge and is connected with controller, and the controller that control model is switched is connected with RHVC.

2, the direct pipeline secondary water supply of full-automatic band buffer according to claim 1 is characterized in that described RHVC can replace with motor operated valve.

3, the direct pipeline secondary water supply of full-automatic band buffer according to claim 1 is characterized in that the also external motor operated valve of described controller, outlet pressure meter and pressure switch.

4, the direct pipeline secondary water supply of full-automatic band buffer according to claim 1 is characterized in that described RHVC is connected with water pump.

5, the direct pipeline secondary water supply of full-automatic band buffer according to claim 3 is characterized in that can be a plurality of by the water pump of RHVC control.