CN200974993Y

CN200974993Y - Pipe network double pressure-regulator water supply apparatus

Info

Publication number: CN200974993Y
Application number: CN 200620007042
Authority: CN
Inventors: 徐恂
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-13
Filing date: 2006-03-13
Publication date: 2007-11-14
Anticipated expiration: 2016-03-13

Abstract

The utility model provides a piece of pipe network pressure-superposed water supply equipment without air pollution which essentially includes a pressure stabilizing tank, a negative pressure suppressor, a diaphragm pneumatic tank, a water pump, a variable frequency control cabinet, a liquid level meter, a pressure sensor, a butterfly valve and a check valve. The technical proposal of the utility model lies in: 1. The pressure stabilizing tank with the negative pressure suppressor and the diaphragm pneumatic tank are combined to solve the potential negative pressure problems in pipe network pressure-superposed water supply. 2. The water outlet pressure of the water supply system can be regulated according to changes of the tap water supply pressure, so as to improve the stability of pipe network pressure-superposed water supply.

Description

Pipe network Pressure-superposed water supply equipment

One, technical field

The utility model relates to a kind of and tap water pipe network and other has the laminated type supply equipment of pressure pipe network direct connection.

Two, background technology

At present, many employings are traditional type constant pressure water supply equipment in buildings water supply system.This way of supplying water has pressure stability, the standby water yield to store advantages such as many, but also just because front end is adopting the water tank water storage, exists problems such as the waste of pipe network water supply pressure, secondary pollution hidden danger and water tank cleaning be heavy.China's water supply regulations of rules forbids that on the public water supply pipeline of city water pump directly is installed to draw water because the negative pressure that produces when directly drawing water can influence around other user supply water even the safety that can endanger supply equipment.

Three, summary of the invention

The utility model patented product is a kind of brand-new pipe network pressure-superposed formula equipment, can directly be bound up on the tap water pipe network and other have on the water supply network of pressure, can not produce negative pressure to system.

To achieve these goals, pipe network pressure-superposed formula supply equipment described in the utility model is made up of current stabilization jar, negative pressure inhibition device, barrier film air pressure tank, water pump, variable frequency control cabinet, content gauge, inlet pressure transducer, outlet pressure sensor, butterfly valve, flap valve and pipeline.Negative pressure inhibition device and current stabilization jar are connected the inlet of water supply pump, and when the water yield of user's needs was less than or equal to the tap water supply amount, supply equipment did not have negative pressure and produces; The water yield that needs as the user is during greater than the tap water supply amount, and negative pressure inhibition device imports air, and the current stabilization jar is equivalent to little water tank, and supply equipment still can not produce negative pressure.Inlet at water pump also has the barrier film air pressure tank, and the water yield that needs as the user is during greater than the tap water supply amount, and the barrier film air pressure tank is mended the water in the barrier film capsule out, and supply equipment can not produce negative pressure equally.These two kinds of methods combine, and can switch by the control of ball valve, have guaranteed the normal operation of supply equipment.

The utility model also is equipped with inlet pressure transducer and outlet pressure sensor, its 4-20mA signal all imports the programmable logic controller in the variable frequency control cabinet into, thereby the control frequency converter is controlled water pump, pipe network Pressure-superposed water supply equipment of the present utility model can be selected two kinds of working methods, a kind ofly is the pressure of outlet and sets value the same; A kind of is that water main's discharge pressure can be along with the change in pressure of running water pipe web portal.When reducing because user's water supply volume increases when running water pipe web portal pressure, water main's discharge pressure is also corresponding to reduce a percentage value automatically.Normal value is smaller than usual to offer user's water pressure like this, but still can satisfy user's water supply, and at this moment water main's water yield reduces, the time that negative pressure inhibition device can postpone to devote oneself to work, thus farthest guarantee the stability of water system.

Like this, the utility model just can directly be connected in running water pipe and on the net the user supplied water.

Four, description of drawings

Fig. 1 is the utility model structure chart

1, running water pipe web portal; 2, butterfly valve; 3, inlet pressure transducer; 4, barrier film air pressure tank; 5, negative pressure inhibition device; 6, current stabilization jar; 7, content gauge; 8, base; 9, pump water inlet house steward; 10, outlet pressure sensor; 11, water pump; 12, water main; 13, flap valve; 14, rubber is soft connects; 15, variable frequency control cabinet; 16, frequency converter; 17, ball valve; 18, programmable logic controller PLC.

Five, the specific embodiment

Pipe network Pressure-superposed water supply equipment directly links to each other with tap water pipe network 1, when the water supply of tap water pipe network during more than or equal to user's water, equipment be can operate as normal (can not produce the problem of negative pressure), when the water supply of tap water pipe network during less than user's water, import air by the negative pressure inhibition device of installing on the current stabilization jar 6, or the water that stores in barrier film air pressure tank moisturizing in pipeline, can avoid the generation of negative pressure in the pipeline.The utility model combines both, and both health was reliable, and abundant water storage volume is arranged again.When the water supply of tap water pipe network was little less than the difference of user's water, the water that stores in the barrier film air pressure tank was just enough additional; When negative pressure inhibition device lost efficacy, close ball valve 17, system's dependence barrier film air pressure tank still can operate as normal.

The utility model is equipped with inlet pressure transducer 3 and outlet pressure sensor 10, its 4-20mA signal all imports programmable logic controller 18 into, thereby control frequency converter 16 work, water main's discharge pressure of the pipe network Pressure-superposed water supply equipment of utility model can be along with the change in pressure of running water pipe web portal, when reducing because user's water supply volume increases when running water pipe web portal pressure, water main's discharge pressure is also corresponding to reduce a percentage value automatically.Normal value is smaller than usual to offer user's water pressure like this, but still can satisfy user's water supply, thereby reduces water supply volume automatically, thereby postpones the time that negative pressure inhibition device is devoted oneself to work, and farthest guarantees the stability of water system.Because can import current stabilization ullage gas in the time of negative pressure inhibition device work, the pressure of pump entrance can be from the pressure jump of tap water pipe network to zero, and this stable operation to water system is harmful to.

To sum up, basis is novel can to substitute the traditional type frequency-changing water supply device, is directly installed on running water pipe and pipe network system is produced negative pressure on the net and not.

Claims

1, a kind of at the online pipe network Pressure-superposed water supply equipment that connects of running water pipe, it is characterized in that being equipped with simultaneously the current stabilization jar of barrier film air pressure tank and band negative pressure inhibition device in the entrance of water pump.

2,, it is characterized in that being connected with ball valve between negative pressure inhibition device and the current stabilization jar according to the described pipe network Pressure-superposed water supply equipment of claim 1.

3,, it is characterized in that pump entrance and export all be furnished with pressure sensor according to the described pipe network Pressure-superposed water supply equipment of claim 1.