CN201121347Y - Fully automatic variable pressure variable pressure non-negative pressure water supply equipment - Google Patents

Abstract

The fully automatic variable pressure variable pressure non-negative pressure water supply equipment provided by the utility model is composed of a steady flow compensator, a vacuum suppressor, a water pump, a control cabinet, a flow meter and a pressure sensor. Connected, the water pump outlet pipe is connected to the flow meter and then connected to the user's water supply pipe network, and a pressure sensor is installed on the water pump outlet pipe. The utility model can not only effectively solve the problem of water volume and electric energy loss in the low-peak period of water consumption in the constant pressure variable water supply mode, but also solve the problems of slow control signal feedback, difficult inspection and inability to detect faults in the terminal constant pressure water supply mode. The problem of realizing remote control has the advantages of stable system control, reliable operation, simple operation, ideal energy saving, and no water pollution. It is especially suitable for users with large water supply network characteristic curve resistance, complex pipe network system or the least water point. It is not easy to determine the occasion of secondary pressurized water supply.

Description

Fully automatic variable pressure variable pressure non-negative pressure water supply equipment

1. Technical field

The utility model relates to a secondary pressurized water supply equipment, in particular to a fully automatic variable pressure variable pressure non-negative pressure water supply equipment which is directly connected in series with a tap water inlet pipe.

2. Background technology

Most of the non-negative pressure water supply equipment in the prior art adopts constant pressure control at the water outlet of the equipment. During the low peak period of water consumption, there is a problem of waste of water and electricity caused by the high outflow pressure of the useful water point and the large water flow; The water supply method that realizes variable pressure variable pressure control has problems such as slow pressure control signal feedback speed, difficult inspection of faults, and inability to realize remote control, etc., and the safety of water supply is poor. It is suitable for the pressurized water supply of a single high-rise building, but it is difficult to achieve variable pressure at the end of constant pressure for pressurized water supply occasions such as multiple buildings, multiple water points that are least utilized, long-distance or intermediate pressurized pumping stations, etc. control.

3. Contents of utility model

In view of the shortcomings of the above-mentioned prior art, the utility model provides a fully automatic variable pressure variable pressure non-negative pressure water supply equipment with stable system, reliable operation, simple operation, ideal energy saving, and no water pollution.

The technical solution adopted by the utility model to solve its technical problems is: the fully automatic variable pressure variable pressure non-negative pressure water supply equipment is composed of a steady flow compensator, a vacuum suppressor, a water pump, a control cabinet, a flow meter and a pressure sensor, and the tap water inlet pipe After connecting with the steady flow compensator, it is connected with the water pump, and the outlet pipe of the water pump is connected with the flowmeter and then connected with the user's water supply pipe network, and a pressure sensor is installed on the outlet pipe of the water pump, and the vacuum suppressor, water pump, flowmeter and pressure sensor are respectively connected to the control cabinet. When the system is running, the dual variable control of the water outlet flow and pressure is adopted to realize the stepless automatic adjustment and self-adaptive control of the control system, so that the water supply pressure changes with the change of the water flow, so that the pressure at the end of the water supply system is relatively stable, and the maximum value of the system is achieved. Best energy saving effect. First, according to the actual situation of the user's water supply network, analyze, calculate and input the pipeline characteristic curve to the control cabinet. When the equipment is running, the detected outlet flow is fed back to the control cabinet. The outlet pressure is determined by the pipeline characteristic curve and the current actual pressure. Through the frequency conversion speed regulation of the system, the water outlet pressure always moves along the pipeline characteristic curve, and the purpose of adjusting the frequency converter frequency by predicting the water outlet pressure and flow through modeling is achieved. When the water outlet flow decreases, the equipment outlet pressure follows the pipeline characteristic curve. The curve will automatically decrease, and the frequency of the inverter will decrease, otherwise, the frequency of the inverter will increase.

The beneficial effect of the utility model is that the dual-variable control of the water outlet flow and pressure is adopted to realize stepless automatic adjustment and self-adaptive control, so that the water supply pressure changes with the change of the water flow, so that the end pressure of the water supply system is relatively stable, achieving The best energy-saving effect of equipment operation not only solves the problem of water and electricity waste caused by high outflow pressure and large water flow at the water point during the low peak period of water supply in the constant pressure variable water supply mode, but also solves the problem of constant pressure water supply at the end There are problems such as slow control signal feedback, difficult inspection of faults, and inability to realize remote control. It has the characteristics of stable system control, reliable operation, simple operation, ideal energy saving, and no water pollution.

4. Description of drawings

Accompanying drawing 1 is the technological process structural representation (preferred embodiment) of the present utility model.

In the figure, 1. Tap water inlet pipe, 2. Steady flow compensator, 3. Vacuum suppressor, 4. Water pump, 5. Control cabinet, 6. Flow meter, 7. Pressure sensor, 8. User water supply pipe network.

5. Specific implementation

Below with regard to accompanying drawing 1, the full-automatic variable pressure changing non-negative pressure water supply equipment of the present utility model is described in detail below.

As shown in accompanying drawing 1, the fully automatic variable pressure variable pressure non-negative pressure water supply equipment of the present utility model is composed of a steady flow compensator (2), a vacuum suppressor (3), a water pump (4), a control cabinet (5), a flow rate Meter (6) and pressure sensor (7), the tap water inlet pipe (1) is connected to the steady flow compensator (2) and then connected to the water pump (4), and the outlet pipe of the water pump (4) is connected to the flow meter (6) and connected to the user The water supply pipe network (8) is connected, and a pressure sensor (7) is installed on the outlet pipe of the water pump (4), and the vacuum suppressor (3), the water pump (4), the flow meter (6) and the pressure sensor (7) are respectively connected to the control cabinet (5). Before the system runs, first analyze, calculate and input the pipeline characteristic curve to the control cabinet (5) according to the actual situation of the user's water supply pipe network (8), and then feed back the detected water outlet flow to the control cabinet (5) when the equipment is running. The water outlet pressure is determined by the pipeline characteristic curve and the current actual pressure, and the water outlet pressure always moves along the pipeline characteristic curve through the frequency conversion speed regulation of the system, achieving the purpose of adjusting the frequency converter frequency by predicting the water outlet pressure and flow through modeling, so that The pressure at the end of the water supply system is relatively stable. When the flow rate at the water outlet decreases, the pressure at the water outlet of the equipment will automatically decrease along the characteristic curve of the pipeline, and the frequency of the frequency converter will decrease. Otherwise, the frequency of the frequency converter will increase.

It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model without limitation, and any modification or equivalent replacement of the technical solution of the utility model should be done without departing from the spirit and scope of the technical solution of the utility model. It falls within the scope of the claims of the present utility model.

Claims (2)

1, a kind of fully-automatic conversion quantitative change pressing non-negative-pressure water supply facilities is made up of steady flow compensator, vacuum suppresser, water pump, switch board, flow meter and pressure sensor, it is characterized in that: the tap water water inlet pipe is connected the back and links to each other with water pump with steady flow compensator, pumping line is connected with user's water supply network after connecing flow meter, and installs pressure sensor on pumping line.

2, fully-automatic conversion quantitative change pressing non-negative-pressure water supply facilities according to claim 1, it is characterized in that: vacuum suppresser, water pump, flow meter and pressure sensor are wired to switch board respectively.

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