CN201843174U - Steady pressure type pipe network pressure-superposed equipment - Google Patents

Abstract

The utility model belongs to the field of water supply equipment, in particular to a pressure-stabilizing pipe network stacking device, which includes a water suction pipeline and a water outlet pipeline. There are water pumps and control valves, and pressure gauges are installed on the outlet pipeline. The water pump and pressure gauge are connected to the frequency conversion control system. The water suction pipeline is connected in parallel with the direct supply pipeline, and the direct supply pipeline is connected to the pressure stabilizer through a small flow return adjustment pipeline. , There is a valve on the small flow backflow adjustment pipeline. The direct supply pipeline is connected in parallel with the water suction pipeline, and the direct supply pipeline is connected with the voltage stabilizer balancer through a small flow return adjustment pipeline, so that the equipment can reduce the start-stop frequency of the equipment or even stop it when it is running at low frequency, and keep the water out. The pressure is in a stable state, which avoids the heating phenomenon when the water pump is running at low frequency, prolongs the service life of the equipment and ensures safe and reliable water supply.

Description

Stable pressure pipe network stacking equipment

technical field

The utility model relates to a pressure-stabilizing pipe network lamination equipment, which belongs to the field of water supply equipment.

Background technique

At present, the commonly used water supply equipment is the direct pipe network superimposed equipment (hereinafter referred to as the equipment), and its working principle is as follows: the incoming water of the water supply pipe network passes through the pressure stabilizing balancer to keep the pressure of the incoming water of the water supply pipe network, enters the water pump, and is added by the water pump. Compressed for the user. The direct pipe network superimposition equipment can make full use of the pressure of the water supply pipe network, reduce the head of the water pump, reduce the power, and achieve the effect of energy saving and consumption reduction, and its fully enclosed water supply mode can avoid secondary pollution of water and ensure water use Health and Safety. However, since the equipment selection and design are all calculated according to the "maximum daily water consumption of the user", the selection of the water pump is relatively large. In many cases, the equipment can only supply water through frequency conversion and small flow, and the operating frequency is low, which cannot achieve the highest pump efficiency. point. When the user uses water with a small flow rate or basically does not use water, the frequency converter controls the water pump to run at a low frequency to supply water with a small flow rate. When the user does not use water, the pump operation reaches the lower limit frequency and the equipment stops. But both cases have the following problems:

The equipment stops when the user does not use water. When the equipment starts and stops, the water pressure will drop for a short time and the water supply will be discontinuous, especially when the high-level users use water again, there will be a short-term water stoppage. The unevenness of water used by users will cause the equipment to start and stop frequently, which will damage the motor of the water pump, easily cause damage to the control system, and greatly reduce the service life of the equipment.

To ensure stable pressure when the user does not use water, the equipment can be set to not stop. When the user's water consumption is small, the equipment is close to idling and the operation frequency is very low, the water pump operation efficiency is low, and the low-frequency noise is large at night, which will affect the low-level users. The water in the pump cannot be sent out, and the continuous pressurization causes the water pump to heat up; the water pump motor runs at low frequency and the cooling fan rotates slowly and the heat dissipation is poor, especially in summer, it is easy to cause the motor to heat up and burn out.

Contents of the invention

According to the deficiencies in the prior art above, the technical problem to be solved by the utility model is: to provide a kind of pressure-stabilized pipe network superimposition that can solve the overheating problem of the water pump motor when the equipment is running at low frequency, prolong the service life of the equipment, and provide safe and reliable water supply. equipment.

The technical solution adopted by the utility model to solve the technical problem is: a pressure-stabilizing pipe network stacking equipment, including a water suction pipeline and a water outlet pipeline, one end of the water suction pipeline is connected to a voltage stabilizing balancer, and the other end is connected to a water outlet pipeline , there is a water pump and a control valve on the water suction pipeline, and a pressure gauge is installed on the water outlet pipeline, and the water pump and pressure gauge are connected to the frequency conversion control system. The regulating pipeline is connected with a pressure stabilizing balancer, and a valve is arranged on the small flow backflow regulating pipeline.

Among them, one or more water suction pipelines can be selected according to needs, usually two water suction pipelines can be selected.

The pressure stabilizing balancer is provided with a negative pressure eliminating device, which can eliminate the negative pressure effect caused by equipment pumping on the water supply pipe network. There is also a pressure gauge on the pressure stabilizing balancer, the pressure gauge is connected to the frequency conversion control system, the pressure gauge and the frequency conversion control system can set the protection pressure of the water supply pipe network, so as to ensure the normal operation of the voltage stabilizing balancer. In addition, the pressure gauge on the water outlet pipeline and the water pump on the water suction pipeline are also automatically controlled by the frequency conversion control system to ensure the normal operation of the whole set of equipment.

Working principle and process:

The incoming water from the water supply pipe network enters the water pump through the pressure stabilizing balancer (with a negative pressure elimination device), which retains the incoming water pressure of the water supply pipe network. After being pressurized by the water pump, it enters the water pipe network through the outlet pipe to supply water to users. The fully enclosed water supply mode avoids the secondary pollution of pools and water tanks. The negative pressure elimination device can eliminate the negative pressure effect caused by equipment pumping on the water supply pipe network. The pressure instrument and frequency conversion control system can set the protection pressure of the water supply pipe network. .

Connect a direct supply pipeline in parallel to the water suction pipeline of the original equipment, and connect the direct supply pipeline with the pressure stabilizer balancer through the small flow return adjustment pipeline, so that when the equipment is running at low frequency, on the one hand, the water output of the equipment can be increased, The frequency of the equipment is not too low, which solves the problem of overheating of the pump motor. On the other hand, the small flow circulation plays the role of water cooling, avoiding the phenomenon of shaft locking caused by overheating of the pump, thereby avoiding damage to the pump. The valve set on the small flow backflow adjustment pipeline is convenient for flow adjustment and maintenance.

Therefore, when the water is supplied normally, the small flow backflow adjustment pipeline is equivalent to the water used by a faucet, which has almost no effect on the total water supply of the equipment, and when the equipment is running at low frequency, it can reduce the frequency of start and stop of the equipment or even stop it, so that the water output of the equipment is at Stable pressure state, avoiding the heating phenomenon of water pump running at low frequency.

The beneficial effects of the utility model are: to provide a pressure-stabilizing pipe network stacking device, through which the direct supply pipeline is connected in parallel on the water suction pipeline, and the direct supply pipeline and the pressure-stabilizing pipeline are balanced by a small flow backflow adjustment pipeline. The device is connected, so that the equipment can reduce the start-stop frequency of the equipment or even not shut down when the equipment is running at low frequency, keep the outlet water pressure in a stable state, avoid the heating phenomenon when the water pump is running at low frequency, prolong the service life of the equipment and ensure safe and reliable water supply.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of the utility model.

In the figure: 1. Water inlet pipe; 2. Negative pressure elimination device; 3. Pressure stabilizer balancer; 4. Water suction pipeline; 5. Control valve; 6. Water pump; 7. Water outlet pipeline; 8. Pressure gauge; 9. Direct supply pipeline; 10. Small flow backflow adjustment pipeline; 11. Valve; 12. Frequency conversion control system; 13. Pressure instrument

Detailed ways

Embodiments of the utility model are further described below in conjunction with the accompanying drawings:

As shown in Figure 1, the pressure-stabilizing pipe network stacking equipment includes a water suction pipeline 4 and a water outlet pipeline 7. A water pump 6 and a control valve 5 are provided, a pressure gauge 8 is installed on the outlet pipeline 7, the water pump 6 and the pressure gauge 8 are connected to the frequency conversion control system 12, the water suction pipeline 4 is connected in parallel to the direct supply pipeline 9, and the direct supply pipeline 9 passes through The small-flow backflow regulating pipeline 10 is connected to the pressure stabilizing balancer 3 , and the small-flow backflow regulating pipeline 10 is provided with a valve 11 .

Wherein, one or more water suction pipelines 4 can be selected according to needs, usually two water suction pipelines 4 can be selected.

The negative pressure eliminating device 2 is provided on the voltage stabilizing balancer 3 . The negative pressure eliminating device 2 can not only eliminate the negative pressure effect caused by equipment pumping on the water supply pipe network, but also the equipment can set the protection pressure of the water supply pipe network. A pressure gauge 13 is also provided on the voltage stabilizing balancer 3, and the pressure gauge 13 is connected to the frequency conversion control system 12. The pressure gauge 13 and the frequency conversion control system 12 can set the protection pressure of the water supply pipe network, thereby ensuring the normal operation of the voltage stabilizing balancer 3 . In addition, the pressure gauge 8 on the water outlet pipeline 7 and the water pump 6 on the water suction pipeline 4 are also automatically controlled by the frequency conversion control system 12 to ensure the normal operation of the whole set of equipment.

Working principle and process:

The incoming water from the water supply pipe network enters the water pump 6 through the water inlet pipe 1 and the pressure stabilizing balancer 3 (installed with a negative pressure elimination device 2), retaining the pressure of the incoming water from the water supply pipe network, and enters the water pipe through the water outlet pipe 7 after being pressurized by the water pump 6 The net supplies water to users. The fully enclosed water supply mode avoids the secondary pollution of pools and water tanks. The negative pressure elimination device 2 can eliminate the negative pressure effect caused by equipment pumping on the water supply pipe network. The pressure instrument 13 and the frequency conversion control system 12 can set the water supply pipe network protection pressure.

A direct supply pipeline 9 is connected in parallel to the water suction pipeline 4 of the original equipment, and the direct supply pipeline 9 is connected with the pressure stabilizing balancer 3 through the small flow backflow adjustment pipeline 10, so that when the equipment operates at low frequency, on the one hand, It can increase the water output of the equipment, so that the frequency of the equipment will not be too low, and solve the overheating problem of the water pump 6 motor. damage. The valve 11 provided on the small flow backflow regulating pipeline 10 is convenient for flow regulation and maintenance.

Therefore, when the water is supplied normally, the small-flow backflow regulating pipeline 10 is equivalent to water from a faucet, which has almost no effect on the total water supply of the equipment, and can reduce the start-stop frequency of the equipment or even stop it when the equipment is running at low frequency, so that the equipment can discharge water It is in a stable pressure state, which avoids the heating phenomenon of the low-frequency operation of the water pump.

Claims (3)

1. A pressure-stabilizing pipe network stacking device, including a water suction pipeline and a water outlet pipeline. One end of the water suction pipeline is connected to a pressure stabilizing balancer, and the other end is connected to a water outlet pipeline. A water pump and a control valve are arranged on the water suction pipeline. There is a pressure gauge on the water pipeline, and the water pump and the pressure gauge are connected to the frequency conversion control system. A valve is arranged on the regulating pipeline. 2. The pressure-stabilizing pipe network lamination equipment according to claim 1, characterized in that: said pressure-stabilizing balancer is provided with a negative pressure eliminating device. 3. The two-way compensating lamination equipment according to claim 1 or 2, characterized in that: said pressure stabilizing balancer is provided with a pressure gauge.

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