CN206034534U - Pressure automatically regulated water reticulation system - Google Patents

Abstract

The utility model provides a pressure automatically regulated water reticulation system places deep well subaqueous pump in the well of every deep well, deep well subaqueous pump's drainage end communicates with arranging the end of intaking of saying in the delivery pipe branch of deep well well head through the pipeline, drainage end lug connection that the delivery pipe branch was said is to the end of intaking of the total pipeline of water delivery, and perhaps, the delivery pipe branch way that a plurality of is close to converges to the entrance point of incorporation pipeline, the drainage end that merges the pipeline is connected to the end of intaking of the total pipeline of water delivery, the drainage end intercommunication of the total pipeline of water delivery has a plurality of water pipeline, at every water pipeline configuration has pipeline booster pump, pipeline booster pump's power supply is connected to total controller through the converter. The advantage does: the utility model has the advantages of energy -conserving effect is obvious, can constant voltage control network of rivers water pressure, stability construction cycle good, the engineering is short, the engineering cost expense is low.

Description

Pressure automatic adjustment water network system

technical field

The utility model belongs to the technical field of pressure regulation, in particular to a water network system for automatic pressure regulation.

Background technique

At present, the sources of water supply for various industrial factories mainly include rivers, lakes, tap water and groundwater. Groundwater has been widely used in chemical, biological and other industries that require large amounts of water due to its abundant storage, warm winter and cool summer. The water supply methods mainly include tower water supply, water storage tank water supply, pump direct water supply and towerless water supply. The main water supply method adopted by chemical enterprises is direct water supply by pump, and some enterprises have started to adopt the water supply method without tower.

The main water consumption of chemical enterprises has a large total water consumption, large differences in water consumption periods, and unbalanced pressure in various regions. For water supply without a tower, a constant pressure water tank is often used to maintain the pipeline pressure, and the size of the constant pressure water tank varies according to the water demand. The function of the constant pressure water tank is mainly to buffer the pressure and achieve the purpose of constant self-control. However, in the process of realizing the utility model, the inventors found that using a constant pressure water tank to realize the towerless water supply method has the disadvantages of long construction period and high construction cost.

Utility model content

Aiming at the defects in the prior art, the utility model provides a water network system with automatic pressure adjustment, which can effectively solve the above problems.

The technical scheme that the utility model adopts is as follows:

The utility model provides a water network system with automatic pressure adjustment. A deep well submersible pump is placed in the well of each deep well, and the drain end of the deep well submersible pump communicates with the water inlet end of the water delivery branch pipe arranged at the wellhead of the deep well through a pipeline; The discharge end of the water delivery branch pipeline is directly connected to the water inlet end of the water delivery main pipeline, or several adjacent water delivery branch pipelines converge to the inlet end of the merged pipeline, and the drain end of the combined pipeline is connected to The water inlet end of the water delivery main pipeline; the drainage end of the water delivery main pipeline is connected with several water pipelines;

Wherein, at least one control valve is installed on the water delivery branch pipeline near the wellhead; the power supply of each deep well submersible pump is connected to the general controller through a frequency converter; A first pressure transmitter; the first pressure transmitter is connected to the master controller through a signal line;

Each water pipeline is equipped with a pipeline booster pump, and the power supply of the pipeline booster pump is connected to the general controller through a frequency converter; a second pressure transmitter is also installed in the water pipeline; The second pressure transmitter is connected to the general controller through a signal line.

Preferably, the control valve includes a check valve, a pneumatic shut-off valve and a manual shut-off valve.

Preferably, a bypass pipeline is provided behind the check valve, and a bypass manual valve is installed on the bypass pipeline.

Preferably, the water outlet of the bypass pipe is connected with a sewage outlet.

Preferably, the first pressure transmitter is installed at the 2/3 position of the main water pipeline from the starting end to the intersection of water pipelines.

Preferably, the merging pipeline is designed to be enlarged with a margin of 20% to 30%.

Preferably, the general controller is a PLC controller.

Preferably, the first flowmeter is installed at the water outlet of the wellhead of the deep well; and/or the second flowmeter and the integrated temperature transmitter are installed at the main water pipeline;

The first flowmeter, the second flowmeter and the integrated temperature transmitter are all connected to the general controller through signal lines.

Preferably, the general controller is also connected with an alarm.

The pressure automatic adjustment water network system provided by the utility model has the following advantages:

The utility model has the advantages of obvious energy-saving effect, constant pressure control of the water pressure of the water network, good stability, short engineering construction period and low engineering cost.

Description of drawings

Fig. 1 is the first structural representation of the automatic pressure regulation water network system provided by the utility model;

Fig. 2 is a second structural schematic diagram of the automatic pressure adjustment water network system provided by the utility model.

detailed description

In order to make the technical problems, technical solutions and beneficial effects solved by the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

The utility model provides a water network system with automatic pressure adjustment. A deep well submersible pump is placed in each deep well. The depth of the deep well is generally 60m to 120m. The deep well submersible pump can be a multi-stage deep well submersible pump. The pipeline is connected to the water inlet end of the water delivery branch pipeline arranged at the wellhead of the deep well; the discharge end of the water delivery branch pipeline is directly connected to the water inlet end of the water delivery main pipeline, or several adjacent water delivery branch pipelines converge to the combined pipe The inlet end of the road, the drain end of the combined pipeline is connected to the water inlet end of the main water pipeline; wherein, the combined pipeline is enlarged and designed with a margin of 20% to 30%. The drainage end of the main water pipeline is connected with several water pipelines.

Wherein, at least one kind of control valve is installed in the branch water pipeline near the wellhead, wherein the control valve includes but not limited to check valve, pneumatic stop valve and manual stop valve. The power supply of each deep well submersible pump is connected to the main controller through the frequency converter; the first pressure transmitter is installed on the water delivery main pipeline, preferably, the first pressure transmitter is installed on the water delivery main pipeline from the beginning The 2/3 position from the beginning to the junction of the water pipeline. The first pressure transmitter is connected to the main controller through a signal line;

Each water pipeline is equipped with a pipeline booster pump, and the power supply of the pipeline booster pump is connected to the general controller through a frequency converter; a second pressure transmitter is also installed in the water pipeline; the second pressure transmitter passes The signal line is connected to the master controller.

In practical applications, the total controller is a PLC controller. Install the first flowmeter at the water outlet of the wellhead of the deep well; and/or install the second flowmeter and integrated temperature transmitter in the main water pipeline; the first flowmeter, the second flowmeter and the integrated temperature transmitter are all Connect to the main controller through the signal line. The general controller is also connected with an alarm. By installing a flow meter to monitor the flow rate, prevent the backflow of well water due to the problem of the check valve, and prevent the occurrence of water cut-off caused by the large amount of water pumping, so as to achieve the effect of saving water and reducing energy consumption. By installing an integrated temperature transmitter, the temperature of the water supply system of the water network can be monitored.

The working principle of the above-mentioned automatic pressure-adjusting water network system is as follows: when the real-time pressure value of the main water pipeline is lower than the required pressure value, several deep well submersible pumps can be started to pressurize the water supply to adapt to the use of high-pressure water in some areas . Similarly, when the real-time pressure value of the main water pipeline is higher than the demand pressure value, several deep well submersible pumps can be selectively shut down to depressurize the water supply to adapt to the use of low-pressure water in local areas.

For the water pipeline, when the real-time pressure value of the water pipeline is lower than the demand, the power of the pipeline booster pump can be increased through the frequency converter to meet the water demand. Similarly, when the real-time pressure value of the water pipeline is higher than the demand, the power of the pipeline booster pump can be reduced through the frequency converter to meet the water demand.

The control system adopts PLC control, and gradually adjusts the opening and adjustment of the frequency converter of each well according to the pressure of the pressure sensor, so that the pressure of the water network system is stable and the water supply is sufficient.

Referring to Figure 1, a specific layout structure is introduced:

In Fig. 1, there are 5 water wells in total, which are respectively: the first water well 1, the second water well 2, the third water well 3, the fourth water well 4 and the fifth water well 5, each of which is equipped with a submersible pump respectively. They are: the first submersible pump 6, the second submersible pump 7, the third submersible pump 8, the fourth submersible pump 9 and the fifth submersible pump 10. The power supplies of each submersible pump are respectively connected to a frequency converter, respectively: the first The frequency converter 11, the second frequency converter 12, the third frequency converter 13, the fourth frequency converter 14, and the fifth frequency converter 15; each frequency converter is connected to the general controller 18 through a signal line.

The flange of each submersible pump is connected with the DN100 carbon steel pipe of the wellhead and the DN100 water delivery branch pipe of the wellhead, and the check valve, the pneumatic stop valve and the manual stop valve are installed in sequence on the DN100 water delivery branch pipe. Wherein, the water delivery branch pipeline DN100 of the first submersible pump 6 and the second submersible pump 7 is merged into the inlet end of the DN150 carbon steel pipeline, and the discharge end of the DN150 carbon steel pipeline is connected with the main water delivery pipeline DN300. The water delivery branch pipelines corresponding to the 3rd submersible pump 8 and the 4th submersible pump 9 are also connected to the main water delivery pipeline after merging pipelines. And the water delivery branch pipeline corresponding to the 5th submersible pump 10 is directly connected with the water delivery main pipeline.

The first pressure transmitter 17 is installed at 2/3 of the main water delivery pipeline from the initial end to the handover of the water pipeline. Through the first pressure transmitter 17, the main controller can detect the pressure value of the main water delivery pipeline in real time, and maintain the constant pressure effect of the main water delivery pipeline by the following method: namely: the main controller presets the main water delivery pipeline Standard pressure value, when the real-time pressure value detected by the first pressure transmitter is lower than the standard pressure value of the water pipeline, the water pipeline will first open the pneumatic shut-off valve on the first water well 1, and then start the first diving with frequency conversion The pump 6 starts pressurized water supply, and in the process, the frequency of the first submersible pump 6 can be automatically adjusted to realize frequency conversion water supply. When the water consumption is large, the real-time pressure value is lower than the standard pressure value of the main water pipeline, and then start other submersible pumps with frequency conversion in turn; when the water consumption of the system is reduced, the real-time pressure value is higher than the standard pressure value of the main water pipeline, and can be gradually shut down Other submersible pumps enable stable control of water pressure.

In Fig. 1, there are 4 water pipelines in communication with the main water pipeline. For each water pipeline, the configuration is the same. Only water pipeline 1 is taken as an example. A pipeline booster pump 16 is installed on the water pipeline 1, and the pipeline is pressurized. The pump 16 is connected to the general controller through the sixth frequency converter 19; the second pressure transmitter 20 is also installed on the water pipeline 1. Therefore, the master controller can obtain the real-time pressure value of the water pipeline 1 through the second pressure transmitter 20, and the master controller is preset with a standard pressure value of the water pipeline 1. When the real-time pressure value of the water pipeline 1 is lower than the standard pressure value , pressurize through the pipeline booster pump 16, control the speed of the pipeline booster pump 16 through the sixth frequency converter 19, and then control the pressure of the water pipeline 1 to keep it near the standard pressure value.

Further, in order to make the control more stable and avoid hidden dangers, referring to Figure 2, a bypass pipeline can also be connected behind the wellhead check valve, and the bypass pipeline is equipped with a bypass manual valve. The inverted valve is manually controlled to prevent the water supply from being affected by the failure of the automatic control system. In addition, the wellhead pipeline is equipped with a sewage outlet, and the sewage outlet is equipped with a sewage valve. When the water quality is polluted, it can be directly discharged into the sewage treatment, preventing the pollution of individual wells from affecting the entire waterway system, and realizing abnormal sewage discharge of well water. scum. Flowmeters and thermometers are installed on wellhead water delivery branch pipelines and main water delivery pipelines to realize automatic monitoring of flow and temperature.

The pressure automatic adjustment water network system provided by the utility model is a pressure automatic adjustment water network system that uses multiple deep wells to supply water to workshops and living areas in factories. A good automatic pressure regulating water network system has the following advantages:

(1) Through the PLC automatic control system, the constant pressure automatic control of deep well water supply in industrial enterprises can be realized. No matter how the water consumption of the system changes, the outlet pressure can be kept constant.

(2) There is no need to build a water tower, no roof water tank, or even a constant pressure tank to use this system, which not only reduces the construction period of the project, but also solves the shortcomings of high project cost, and also overcomes the large fluctuation of air pressure and the start of the water pump Frequent and other deficiencies.

(3) The system can be equipped with functions such as automatic alarm and automatic cut-off, and has automatic and manual switching functions, making the operation very stable and reliable.

(4) The system adjusts the speed of the water pump according to the change of water consumption, so that the water pump always works in the high-efficiency area, and the power saving effect is obvious, which can save 20% to 40% of power compared with the constant speed water pump.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, these improvements and Retouching should also be considered within the protection scope of the present utility model.

Claims (9)

1. A pressure automatic regulation water network system is characterized in that, in the well of each deep well, a deep well submersible pump is placed, and the discharge end of the deep well submersible pump passes through the water inlet end of the water delivery branch pipeline arranged at the wellhead of the deep well Connected; the discharge end of the water delivery branch pipeline is directly connected to the water inlet end of the water delivery main pipeline, or several adjacent water delivery branch pipelines converge to the inlet end of the merged pipeline, and the drain end of the combined pipeline Connected to the water inlet end of the water delivery main pipeline; the drainage end of the water delivery main pipeline is connected with several water pipelines; Wherein, at least one control valve is installed on the water delivery branch pipeline near the wellhead; the power supply of each deep well submersible pump is connected to the general controller through a frequency converter; A first pressure transmitter; the first pressure transmitter is connected to the master controller through a signal line; Each water pipeline is equipped with a pipeline booster pump, and the power supply of the pipeline booster pump is connected to the general controller through a frequency converter; a second pressure transmitter is also installed in the water pipeline; The second pressure transmitter is connected to the general controller through a signal line. 2. The water network system with automatic pressure adjustment according to claim 1, wherein the control valves include check valves, pneumatic shut-off valves and manual shut-off valves. 3. The water network system with automatic pressure adjustment according to claim 2, characterized in that a bypass pipe is provided after the check valve, and the bypass pipe is equipped with a bypass manual valve. 4. The water network system with automatic pressure adjustment according to claim 3, characterized in that, the water outlet end of the bypass pipe is connected with a sewage outlet. 5. The pressure automatic adjustment water network system according to claim 1, characterized in that the first pressure transmitter is installed at the 2/3 position of the main water delivery pipeline from the starting end to the junction of water pipelines . 6. The water network system with automatic pressure adjustment according to claim 1, characterized in that, the merged pipeline is designed with a margin of 20% to 30%. 7. The water network system with automatic pressure adjustment according to claim 1, characterized in that, the general controller is a PLC controller. 8. The pressure automatic regulation water network system according to claim 1, characterized in that, the first flowmeter is installed at the water outlet of the deep well wellhead; and/or the second flowmeter and integrated Temperature Transmitter; The first flowmeter, the second flowmeter and the integrated temperature transmitter are all connected to the general controller through signal lines. 9. The water network system with automatic pressure regulation according to claim 8, characterized in that the general controller is also connected with an alarm.