CN201236359Y

CN201236359Y - Full-automatic dual frequency laminating water supply equipment

Info

Publication number: CN201236359Y
Application number: CNU2008200905460U
Authority: CN
Inventors: 李守英
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-07-30
Filing date: 2008-07-30
Publication date: 2009-05-13
Anticipated expiration: 2018-07-30

Abstract

The utility model relates to a fully automatic double-frequency conversion pressure-superposed water supply device which is characterized in that a double-frequency conversion control cabinet (15) consisting of two sets of frequency conversion water supply systems controls two sets of water pump units (16) and (17), wherein the main inlet pipe (10) of the water pump unit (16) is successively connected with a backflow preventer (8), a pipeline filter (7) and a municipal water supply pipe (26); the main inlet pipe (22) of the water pump unit (17) is connected with the water outlet of a water tank (1), and the main outlet pipe (23) of the water pump unit (17) is successively connected with a check valve (19) and the main outlet pipe(18) of the water pump unit (16) and then be connected with the water supply pipe of users; water replenishing pumps (20 ) and (21), pressure sensors (13) and (14), an electric contact pressure gauge (12) and a water level controller (4) are respectively connected with the double-frequency conversion control cabinet (15). The non-negative pressure double-frequency conversion water supply device meets the requirement of normal use of water of users under non-negative pressure condition through the coordinated work of two sets of water pump units at the peak time of using water of users and during the short-term water break of municipal water supply. The utility model has the characteristics of safe and reliable water supply, no secondary pollution, no negative pressure, energy conservation, convenient maintenance, and the like, and can be widely applicable to various secondary pressurized water supplies.

Description

Full-automatic two frequency conversion laminating water supply equipment

Affiliated technical field

The utility model relates to a kind of second pressure water supply equipment, particularly the full-automatic two frequency conversion laminating water supply equipments of the current limliting constant pressure type that can directly link to each other with municipal network water supply.

Background technology

Present laminating water supply equipment, it is little to have floor space, non-secondary pollution, advantage such as energy-conservation.But shortcoming is once arranged: the complex structure that current stabilization is irritated, maintenance difficult, volume adjusted is little, water use peak during the phase normal water supply hold time very short.The laminating water supply equipment that has has only been done current limliting way of supplying water or step-down way of supplying water at water use peak during the phase, these all influence user's normal water.Preposition water pot is the laminating water supply equipment at water source as a supplement, and its structure is that the water inlet of water pot connects municipal water supply pipe, delivery port water pump unit.When water use peak phase water pump group begins water in the draw-off tank, because water pot and municipal network water supply pressure equate that the water in the draw-off tank is also taken out the water of municipal network water supply simultaneously, so influence the pressure and the flow of municipal network water supply.This water pot can not play a part the pressure relay like this, can only play common water tank, and volume adjusted is restricted, the cost height.

Summary of the invention

The purpose of the present utility model is to solve existing the problems referred to above of non-negative pressure water-supply installation in the prior art, provides a kind of to water supply current limliting full-automatic two frequency conversion laminating water supply equipments of constant voltage again.

Realize the technical scheme of goal of the invention: control two groups of water pump assemblies 16 and 17 by two variable frequency control cabinets 15 that two cover frequency-conversion water supply systems are formed, the water inlet manifold 10 of water pump assembly 16 connects backflow preventer 8 successively, piping filter 7, municipal water supply pipe 26, the outlet pipe of the water inlet manifold 22 water receiving casees 1 of water pump assembly 17, outfall sewer 18 backs that the outfall sewer 23 of water pump assembly 17 connects flap valve 19 and water pump assembly 16 successively are connected small pump 20 and 21 with user's feed pipe, pressure sensor 13 and 14, electro connecting pressure gauge 12, electromagnetic valve 5, water level controller 4 is connected with two variable frequency control cabinets 15 respectively.

The beneficial effects of the utility model are, when energy-conservation, no negative pressure, non-secondary pollution, easy to maintenance, municipal network water supply low discharge state or short-term are cut off the water supply, can give the normal constant pressure water supply of user reliably.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

The specific embodiment

As shown in Figure 1, compositions such as the pressure sensor 14 that is connected on the outfall sewer of its structure of the utility model by electro connecting pressure gauge 12 that is connected on, the closed no setting-out case of compositions such as water tank 1, row-inlet valve 2, air filter 3, water level controller 4, inlet valve 5, float valve 6, bleed off pipe 24, flap valve 25 and the inlet manifold 10 of two water pump assemblies 16 and 17, bypass line 11, water pump assembly 16 and pressure sensor 13 water pump assemblies 16, two variable frequency control cabinets 15.Two variable frequency control cabinet 15 wiring water level controllers 4, electro connecting pressure gauge 12, pressure sensor 13 and 14, small pump 20 and 21, and control system supplies water to the user.

In use, behind tap water process pipe cleaner 7 and the backflow preventer 8, supply water to the user by water pump assembly 16, water pump assembly 17, bypass line 11.Another road is by tank inlet pipe 9, water tank water intake valve 5 and float valve 6 Tank Injection Water, and the air in the water tank is outwards ventilated by row-inlet valve 2 and air filter 3.Cause water tank to continue water inlet and when reaching the water tank full-water level, row-inlet valve 2 cuts out, water in the water tank passes through water tank overflow pipe 24 and flap valve 25 outside drainings when float valve 6 damages, avoid the water tank pressure-bearing.When cistern water level reached water level controller lower limit water level, controller sends control signal shut down water pump assembly 17.According to the requirement of user's water, correctly select water tank size and the size of equipment and the platform number of small pump for use, satisfy the required water requirement of user reliably.Water tank adopts closed no setting-out case, and its cost is low, non-secondary pollution.

Two variable frequency control cabinets 15 are made up of two cover frequency-conversion water supply systems and controller, a cover frequency-conversion water supply system control of pump unit 16, another set of frequency-conversion water supply system control of pump unit 17.

In the equipment running process, when municipal water supply pressure and flow can satisfy the user and require with water pressure and water supply volume, equipment directly supplied water to the user by bypass line 11.When municipal water supply pressure and flow can not satisfy the user and require with water pressure and water supply volume, force value and the device power-up setup pressure value of system by water inlet pressure sensor 13 compares the back controller and provides starting-up signal, control of pump unit 16 moves automatically, and with pressure sensor 14 as pressure feedback, the outlet pressure setting value laminates water supply for user's constant voltage as target control small pump 20 converting operations.

When user's water use peak phase user water supply volume limits output greater than municipal administration, pressure sensor 13 force value descend, when reducing to the current limliting pressure set points, controller provides signal makes water pump assembly 16 usefulness pressure sensors 13 as pressure feedback, and with the current limliting pressure set points of pump intake as target, the platform number of increase and decrease water pump 20 and change pump rotary speed and supply water for user's current limliting amount.Controller provides control signal simultaneously, makes water pump assembly 17 usefulness pressure sensors 14 as pressure feedback, and sets value as target with outlet pressure, and the platform number of increase and decrease water pump 21 and change pump rotary speed are given user's constant pressure water supply.Because residual quantity between the pump-out of tap water supply amount and water pump 20 and pump intake force value are direct ratio row relations, adjust the water pump pump-out and come the pressure of constant pump intake, the residual quantity of promptly constant municipal water supply amount and water pump pump-out reaches the purpose that limited flow supplies water.The municipal network water supply confession many with regard to water pump take out relatively also many, lacking of confession with regard to relatively also lacking that water pump is taken out, and the municipal network water supply terminal pressure remains on more than the current limliting pressure set points always, makes water pump assembly 16 real operating in laminate relay and non-negative pressure method of water supply state.

When user's water supply volume when becoming less than the municipal water supply amount; the variable frequency pump frequency of water pump assembly 17 descends; when dropping to low-limit frequency; controller provides the water pump platform number that control signal reduces operation earlier; when reducing to a pump frequency conversion operation; controller provides stopping signal, and water pump assembly 17 is shut down.Send switching signal simultaneously, make water pump assembly 16 usefulness pressure sensors 14 as pressure feedback, outlet pressure sets value as target control small pump 20 converting operations, gives user's constant pressure water supply.

When municipal water supply is cut off the water; the force value of pressure sensor 13 descends; the variable frequency pump frequency of water pump assembly 16 descends; when dropping to low-limit frequency; controller provides stopping signal, and water pump assembly 16 is shut down, if can not shut down because of certain reason water pump assembly 16; force control of pump unit 16 to be shut down with the lower limit of electro connecting pressure gauge 12, prevent that municipal network water supply from producing negative pressure.When the force value of pressure sensor 13 is reduced to the current limliting pressure set points, controller provides signal makes water pump assembly 17 usefulness pressure sensors 14 as pressure feedback, and with outlet pressure setting value as target, the platform number of increase and decrease water pump 21 and change pump rotary speed and continue constant pressure water supply to the user.

Claims

1, a kind of full-automatic pair of frequency conversion laminating water supply equipment is made up of water pump assembly, water tank, two variable frequency control cabinets etc.Its characteristics are: control two groups of water pump assemblies (16) and (17) by two variable frequency control cabinets (15) that two cover frequency-conversion water supply systems are formed, the water inlet manifold (10) of water pump assembly (16) connects backflow preventer (8) successively, piping filter (7), municipal water supply pipe (26), the delivery port of water inlet manifold (22) the water receiving case (1) of water pump assembly (17), outfall sewer (18) back that the outfall sewer (23) of water pump assembly (17) connects flap valve (19) and water pump assembly (16) successively is connected small pump (20) and (21) with user's feed pipe, pressure sensor (13) and (14), electro connecting pressure gauge (12), water level controller (4) is connected with two variable frequency control cabinets (15) respectively.

2, by the described full-automatic pair of frequency conversion laminating water supply equipment of claim 1, it is characterized in that: the described pair of variable frequency control cabinet is with two frequency converters.