阅读说明：本技术 一种多时段自适应恒压系统 (Multi-period self-adaptive constant-voltage system ) 是由 刘宏伟 帅学华 王卿 彭石磊 于 2020-11-12 设计创作，主要内容包括：一种多时段自适应恒压系统,属于供水管网压力动平衡技术领域,包括自适应恒压装置、分时控制管理单元和信号采集传输单元,所述自适应恒压装置包括自来水通过的主阀、控制主阀开度的减压导阀和分别设置在主阀前、后的压力测量装置,所述减压导阀与分时控制管理单元电连接,所述压力测量装置与信号采集传输单元电连接,所述信号采集传输单元将实时读取的压力数据传输至分时控制管理单元。本发明将自适应恒压装置结合控制、通信设备组成一个整体的系统,能监控阀前、后实时压差,根据不同时段的需求对阀后压力值进行设定,实现下游压力在不同时段的动平衡。(The utility model provides a many periods of self-adaptation constant pressure system, belongs to water supply network pressure dynamic balance technical field, including self-adaptation constant pressure device, timesharing control management unit and signal acquisition transmission unit, self-adaptation constant pressure device includes the main valve that the running water passes through, the decompression pilot valve of control main valve aperture and sets up the pressure measurement device before the main valve respectively, the decompression pilot valve is connected with timesharing control management unit electricity, pressure measurement device is connected with signal acquisition transmission unit electricity, signal acquisition transmission unit transmits the pressure data of reading in real time to timesharing control management unit. The invention combines the self-adaptive constant pressure device with control and communication equipment to form an integral system, can monitor the real-time pressure difference before and after the valve, sets the pressure value after the valve according to the requirements of different time periods, and realizes the dynamic balance of the downstream pressure in different time periods.)

1. The multi-period self-adaptive constant-pressure system is characterized by comprising a self-adaptive constant-pressure device, a time-sharing control management unit and a signal acquisition and transmission unit, wherein the self-adaptive constant-pressure device comprises a main valve for running water to pass through, a pressure reduction pilot valve for controlling the opening degree of the main valve and pressure measurement devices respectively arranged in front of and behind the main valve, the pressure reduction pilot valve is electrically connected with the time-sharing control management unit, the pressure measurement devices are electrically connected with the signal acquisition and transmission unit, and the signal acquisition and transmission unit transmits pressure data read in real time to the time-sharing control management unit.

2. The multi-session adaptive constant pressure system according to claim 1, wherein the pressure measuring device employs a pressure gauge or a dynamic pressure sensor.

3. The multi-period adaptive constant-voltage system according to claim 1, wherein the signal acquisition and transmission unit comprises a data acquisition device, a data buffer module and a communication module.

4. The multi-session adaptive constant voltage system according to claim 3, wherein the communication module supports wireless/wired communication.

5. The multi-period adaptive constant-pressure system according to claim 1, wherein the pressure reducing pilot valve comprises an adjusting screw at the top end and a diaphragm transmission mechanism in the valve, and the adjusting screw controls the pressure bearing magnitude of a water chamber of the pressure reducing pilot valve, so that the diaphragm transmission mechanism moves up and down to control the opening magnitude of the pressure reducing pilot valve.

6. The multi-period adaptive constant-pressure system according to claim 5, wherein the diaphragm of the diaphragm transmission mechanism is a rubber diaphragm and is durable.

7. The multi-period adaptive constant-pressure system according to claim 1 or 5, wherein the pressure-reducing pilot valve is provided with a water inlet and two water outlets, the water inlet is connected with a water inlet pipeline of the main valve, and the two water outlets are respectively connected with an upper cavity of the main valve and a water outlet pipeline of the main valve.

8. The multi-period adaptive constant-pressure system according to claim 1, wherein the time-sharing control management unit can set the water outlet pressure value of the pressure reducing pilot valve and the main valve water outlet pipeline which are connected at different time periods, so as to realize the time-sharing control of the outlet pressure value of the main valve.

9. The multi-interval adaptive constant-pressure system according to claim 1 or 8, wherein the time-sharing control management unit is connectable with one pressure-reducing pilot valve to a plurality of adaptive constant-pressure devices, and receives one signal to a plurality of signal acquisition and transmission units.

10. The multi-period adaptive constant-pressure system according to claim 1, wherein the main valve adopts a semi-linear flow passage, a wide valve body and a digital pressure reducing valve with a structure with equal flow cross-sectional area, and the valve plate is provided with a V-shaped opening plug for buffering.

Technical Field

The invention belongs to the technical field of pressure dynamic balance of a water supply network, and particularly relates to a multi-period self-adaptive constant-pressure system.

Background

The national ministry of hydraulics clearly points out the water control guideline of 'priority of water saving, space balance, system management and two-hand force application', and the great water conservancy project construction of water saving and water supply is promoted under the condition of increasing the strength.

In reality, the water consumption of a user is dynamic, so that the situation of insufficient water supply or excessive water supply happens occasionally. The imbalance between the water consumption and the water supply is reflected on the pressure of the water supply in a centralized way, namely, the pressure is low when the water consumption is high and the water supply is low; if the water consumption is small and the water supply is large, the pressure is high. The water supply pressure is kept constant, so that the balance between water supply and water use can be kept, namely, when the water is used more, the water supply is more, and when the water is used less, the water supply is less, so that the water supply quality is improved.

The constant pressure water supply system is very important for users. When the water is supplied in production and living, if the pressure of tap water is insufficient due to reasons or the water is cut off in a short time, the life quality can be influenced, and the living safety can be influenced in serious cases. Meanwhile, in different time periods, the water consumption demand of the water consumption area is different, and the demand on the water pressure is correspondingly changed. Therefore, the time-interval constant-pressure water supply device and the control system thereof in the water using area can generate great economic benefit and social benefit.

At present, a water supply network adopts hydraulic assemblies such as a pressure reducing valve and a flow regulating and pressure regulating valve to control the pressure of the pipe network to a certain degree, but the control of a single valve cannot enable the quick dynamic balance of the pressure of the pipe network around the valve, so that the problems of large resistance loss and inaccurate pressure control are solved. Therefore, in order to better realize the dynamic pressure balance of the pipe network and provide a better water using experience for users, the existing hydraulic assembly needs to be further modified.

Disclosure of Invention

In order to solve the technical problems, the invention provides a multi-period self-adaptive constant-pressure system which realizes dynamic balance control of the set values of the downstream water pressure at different periods.

The invention adopts the following specific technical scheme:

a multi-period self-adaptive constant-pressure system comprises a self-adaptive constant-pressure device, a time-sharing control management unit and a signal acquisition and transmission unit, wherein the self-adaptive constant-pressure device comprises a main valve for running water to pass through, a pressure reduction guide valve for controlling the opening degree of the main valve and pressure measurement devices respectively arranged in front of and behind the main valve, the pressure reduction guide valve is electrically connected with the time-sharing control management unit, the pressure measurement devices are electrically connected with the signal acquisition and transmission unit, and the signal acquisition and transmission unit transmits pressure data read in real time to the time-sharing control management unit.

Preferably, the pressure measuring device adopts a pressure gauge or a dynamic pressure sensor.

Preferably, the signal acquisition and transmission unit comprises a data acquisition device, a data buffer module and a communication module.

Preferably, the communication module supports wireless/wired communication.

Preferably, the pressure reducing pilot valve comprises an adjusting screw at the top end and a diaphragm transmission mechanism in the valve, and the adjusting screw controls the pressure bearing size of a water cavity of the pressure reducing pilot valve, so that the diaphragm transmission mechanism moves up and down to control the opening size of the pressure reducing pilot valve.

Preferably, the diaphragm of the diaphragm transmission mechanism is a rubber diaphragm and is durable.

Preferably, the pressure reducing pilot valve is provided with a water inlet and two water outlets, the water inlet is connected with a water inlet pipeline of the main valve, and the two water outlets are respectively connected with an upper cavity of the main valve and a water outlet pipeline of the main valve.

Preferably, the time-sharing control management unit can set water outlet pressure values of the pressure reducing pilot valves and the main valve water outlet pipeline at different time periods, so that the outlet pressure value of the main valve can be controlled in a time-sharing manner.

Preferably, the time-sharing control management unit can be connected with one pressure reducing pilot valve to a plurality of self-adaptive constant-pressure devices and receives signals from one signal acquisition and transmission unit to a plurality of signal acquisition and transmission units.

Preferably, the main valve adopts a semi-linear flow passage, a wide valve body and a digital pressure reducing valve with an equal flow cross-sectional area structure, and the valve plate is provided with a V-shaped opening plug to play a role in buffering.

Compared with the prior art, the invention has the beneficial effects that:

(1) the invention combines the self-adaptive constant pressure device with control and communication equipment to form an integral system, can monitor the real-time pressure difference before and after the valve, sets the pressure value after the valve according to the requirements of different time periods, and realizes the dynamic balance of the downstream pressure in different time periods;

(2) the self-adaptive constant-pressure device has good pressure reducing and stabilizing effect, the independent pressure feedback device is arranged outside, the control is carried out by utilizing the hydraulic principle, the pressure of the water outlet is not influenced by the pressure of the water inlet and the flow change, and the pressure and the static pressure can be reduced;

(3) according to the invention, the accurate and stable water outlet pressure can be obtained only by controlling the adjusting screw of the pressure reducing guide valve, and the diaphragm transmission mechanism is made of high-quality materials and basically does not need maintenance;

(4) the main valve adopts a streamline and wide valve body design, has large flow area and small resistance loss, and adopts a valve plate design of the V-shaped opening plug, so that the noise and the vibration are effectively reduced when the front-back pressure difference of the main valve is large.

Drawings

FIG. 1 is a schematic diagram of an adaptive constant voltage device according to a preferred embodiment of the present invention;

FIG. 2 is a block diagram of a multi-period adaptive constant voltage system according to a preferred embodiment of the present invention.

1. A main valve; 1.1, a membrane; 1.2, a valve rod; 1.3, a valve plate; 2. a pressure reducing pilot valve; 2.1, adjusting screws; 2.2, a diaphragm transmission mechanism; 3. a pre-valve pressure gauge; 4. a post-valve pressure gauge.

Detailed Description

The invention is further illustrated by the following specific examples. The starting materials and methods employed in the examples of the present invention are those conventionally available in the market and conventionally used in the art, unless otherwise specified.

Example 1

As shown in fig. 1 and 2, a multi-time-interval adaptive constant pressure system, which is installed in pipelines in the municipal and water conservancy fields, reduces the higher upstream pressure to the required downstream working pressure to dynamically balance the water pressure of tap water entering a water tower or a user, and comprises an adaptive constant pressure device, a time-sharing control management unit and a signal acquisition and transmission unit, wherein the adaptive constant pressure device comprises a main valve 1 through which tap water passes, a pressure reduction pilot valve 2 for controlling the opening degree of the main valve 1 and pressure measurement devices respectively arranged in front of and behind the main valve 1, the pressure reduction pilot valve 2 is electrically connected with the time-sharing control management unit, the pressure measurement device is electrically connected with the signal acquisition and transmission unit, and the signal acquisition and transmission unit transmits the pressure data read in real time to the time-sharing control management unit. Wherein, the pressure measuring device adopts pressure gauges 3 and 4 or a dynamic pressure sensor; the main valve 1 adopts a semi-linear flow passage, a wide valve body and a digital pressure reducing valve with an equal flow cross section structure, the flow area is large, the resistance loss is small, the digital pressure reducing valve comprises a diaphragm 1.1 for isolating an upper cavity and a lower cavity, a valve plate 1.3 for controlling the opening degree and a valve rod 1.2 for connecting the upper cavity and the lower cavity, and the valve plate 1.3 is designed into a V-shaped opening plug structure, so that the digital pressure reducing valve plays a role in buffering under the condition of large pressure reduction and reduces noise and vibration; the pressure reducing guide valve 2 comprises an adjusting screw 2.1 at the top end and a diaphragm transmission mechanism 2.2 in the valve, the adjusting screw 2.1 is convenient to adjust and operate, the diaphragm transmission mechanism 2.2 can move up and down to control the opening of the pressure reducing guide valve 2 to obtain accurate and stable outlet pressure, a diaphragm of the diaphragm transmission mechanism adopts a rubber diaphragm, and the high-quality material is durable and basically does not need maintenance.

The pressure reducing pilot valve 2 is provided with a water inlet and two water outlets, the water inlet is connected with a water inlet pipeline of the main valve 1, and the two water outlets are respectively connected with an upper cavity of the main valve 1 and a water outlet pipeline of the main valve 1, so that the water pressure of the water outlet pipeline of the main valve 1 can be fed back to the pressure reducing pilot valve 2 in real time, the lower cavity of the pressure reducing pilot valve 2 controls the opening of the pressure reducing pilot valve 2 by the up-and-down movement of the diaphragm transmission mechanism 2.2 according to the water pressure, correspondingly, the water quantity entering the upper cavity of the main valve 1 is changed, the pressure of the upper cavity of the main valve 1 is changed, the valve rod 1.2 can push the valve plate 1.3 to be opened and closed according.

Specifically, when the outlet pressure of the main valve 1 is greater than the set value of the pressure reducing pilot valve 2, outlet pressure water enters the diaphragm lower cavity of the pressure reducing pilot valve 2 from the connecting water pipe, pushes the diaphragm transmission mechanism 2.2 to move upwards, the opening degree of the pressure reducing pilot valve 2 is reduced, the pressure of the pressure water entering the pressure reducing pilot valve 2 from the connecting water pipe and then reaching the upper cavity of the main valve 1 is increased, the valve rod 1.2 is pushed to move downwards, the opening degree of the valve plate 1.3 is reduced accordingly, and the pressure behind the main valve 1 is reduced.

When the outlet pressure of the main valve 1 is smaller than the set value of the pressure reducing pilot valve 2, the pressure of the diaphragm lower cavity of the pressure reducing pilot valve 2 is reduced, the diaphragm transmission mechanism 2.2 moves downwards, the opening degree of the pressure reducing pilot valve 2 is increased, inlet pressure water enters the pressure reducing pilot valve 2 from the connecting water pipe and then reaches the outlet end of the main valve 1, the pressure of the upper cavity of the main valve 1 is reduced, the opening degree of the valve plate 1.3 is increased, and the pressure of the rear part of.

The self-adaptive constant-pressure device has good pressure reducing and stabilizing effect, an independent pressure feedback system is arranged outside the self-adaptive constant-pressure device, the control is carried out by utilizing the hydraulic principle, the pressure of the water outlet is not influenced by the pressure of the water inlet and the flow change, and the pressure and the static pressure can be reduced.

The signal acquisition and transmission unit comprises a data acquisition device (a high-frequency data acquisition device), a data cache module and a communication module, the communication module supports a wireless/wired communication mode, the wireless communication can select GPRS/4G/5G/NB-lot modes and the like according to the field condition, and the wired communication can be realized by adopting an optical fiber/RJ 45 Ethernet mode and the like.

The time-sharing control management unit (upper host) can set pressure values of the pressure reducing pilot valve 2 in different time periods, namely the pressure value of a water outlet connected with a water outlet pipeline of the main valve 1, so that the purpose of controlling the outlet pressure value of the main valve in different time periods, namely the dynamic balance of downstream pressure in different time periods is achieved.

Example 2

The self-adaptive constant-pressure device and the signal acquisition and transmission unit in the embodiment 1 are installed on different floors, so that the water pressure of users connected to each floor is the same, and balanced water supply among different floors is realized; the self-adaptive constant-pressure device and the signal acquisition and transmission unit are arranged on the water inlet pipeline of each building, so that the balanced water supply among different buildings can be realized.

The time-sharing control management unit can be connected with a plurality of self-adaptive constant-pressure devices and the signal acquisition and transmission unit, can set the pressure values of a plurality of pipe networks in a certain area in a time-sharing mode, and automatically realizes the pressure dynamic balance of the whole area.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.