Variable flow pressure regulation control method and system for miniature water supply pump station

Abstract

The invention relates to the technical field of pump body control, and particularly discloses a variable-flow pressure-regulating control method and system for a miniature water supply pump station, which comprises a reservoir, a plurality of water outlet pumps, a constant-pressure pool and a pipeline system consisting of a high-pressure pipeline, a medium-pressure pipeline and a low-pressure pipeline, the reservoir is connected with the constant-pressure water tank through the plurality of water outlet pumps, and the constant-pressure water tank is connected with resident pipelines on each floor through the pipeline system; wherein the joints of the high-pressure pipeline, the medium-pressure pipeline, the low-pressure pipeline and the constant-pressure water tank are provided with control valves I which are in one-to-one correspondence; the high-pressure pipeline comprises two high-pressure branch pipes which are arranged in parallel, the medium-pressure pipeline comprises two medium-pressure branch pipes which are arranged in parallel, and each high-pressure branch pipe and each medium-pressure branch pipe are communicated with the constant-pressure water tank through corresponding first control valves; the low-pressure pipeline is an independently-arranged low-pressure main pipe and is used for solving the problems that an existing water pump station water conveying system is difficult in pressure adjustment and unbalanced in pipeline load.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pump body control, and particularly relates to a variable flow pressure regulating control method and system for a micro water supply pump station. BACKGROUND

[0002] In the current process of urbanization, high-rise buildings are increasing, and residents have higher requirements for the stability and reliability of the water supply system of the water pump. However, the traditional water supply pump station system has exposed many problems in dealing with high-rise building water supply and complex and variable water demand.

[0003] Most of the traditional water supply pump stations adopt a single pressure water supply mode, which is difficult to accurately regulate the pressure according to the water demand of different floors and different time periods. During the peak period of water consumption, high-rise users often face the problem of insufficient water pressure, which causes inconvenience in water consumption; and during the trough period of water consumption, the high water pressure may damage the pipes and water consumption equipment, increasing the maintenance cost.

[0004] In order to meet the water demand of high-rise users, the traditional pump station often needs to continuously run a high-power water pump to provide sufficient pressure. However, this operation mode cannot be dynamically adjusted according to the actual water consumption, and when the water consumption is low, the high-power operation is still maintained, causing a large amount of energy waste, which does not meet the development requirements of energy saving and emission reduction.

[0005] When encountering sudden situations such as fire, the traditional water supply pump station is difficult to quickly switch to the fire water supply mode, and cannot provide stable water source and pressure guarantee for fire water supply in time. At the same time, during the fire water supply process, the normal water consumption of residents may be greatly affected, and even water stop phenomenon may occur, affecting the life and safety of residents.

[0006] Due to the large difference in water demand of different floors, part of the pipes in the traditional water supply system is in a high-load operation state for a long time, while part of the pipes has a low utilization rate. This uneven load distribution easily leads to accelerated pipe wear, shortens the service life of the pipes, increases the probability of pipe burst failure, and affects the safety and stability of water supply.

[0007] Therefore, the present application proposes a variable flow pressure regulating control method and system for a micro water supply pump station to solve the problems of difficult pressure regulation and uneven pipe load in the existing water pump station water supply system. SUMMARY

[0008] The purpose of the present application is to propose a variable flow pressure regulating control method and system for a micro water supply pump station to solve the problems proposed in the background.

[0009] In order to achieve the above purpose, the present application adopts the following technical scheme: A method and system for variable flow and pressure regulation control of a micro water supply pump station includes a water storage tank, multiple outlet pumps, a constant pressure water tank, and a pipeline system consisting of high-pressure pipelines, medium-pressure pipelines, and low-pressure pipelines; the water storage tank is connected to the constant pressure water tank through the multiple outlet pumps, and the constant pressure water tank is connected to the residential pipelines on each floor through the pipeline system; Each of the high-pressure, medium-pressure, and low-pressure pipelines is equipped with a corresponding control valve at its connection to the constant pressure water tank. The high-pressure pipeline includes two parallel high-pressure branch pipes, and the medium-pressure pipeline includes two parallel medium-pressure branch pipes. Each high-pressure branch pipe and medium-pressure branch pipe is connected to the constant pressure water tank through a corresponding control valve. The low-pressure pipeline is an independently installed low-pressure main pipe, which is connected to the constant pressure water tank through a corresponding control valve. Setting: When all residential water pipes on all floors are in use, the maximum water supply floor height for the low-pressure water pipe and the medium-pressure branch pipe is... ;exist At the location of the pipeline on the floor, one of the two high-pressure branches and one of the two medium-pressure branches are selected, for a total of two pipelines, and control valve two is installed on each of them; The high-pressure and medium-pressure branch pipes, each equipped with control valve two, are connected at one end to their respective control valve one, and at the other end to... The corresponding pipework connections should be made for residents on floors 1 and below; Water flow detection devices are installed on both the other high-pressure branch pipe and the other medium-pressure branch pipe, which do not have control valve two installed. One end of each of these two pipes is connected in parallel to the corresponding pipe equipped with control valve two. Floors and Between floors, the other end is connected to its respective control valve; By collecting pipeline flow data in real time through a water flow detection device, the opening degree of control valve two and the operating frequency of the outlet pump are adjusted in conjunction with the flow to achieve water diversion and dynamic pressure regulation for high-rise buildings.

[0010] Preferably, each floor is also equipped with a fire protection pipeline connected to a high-pressure branch pipe with control valve two.

[0011] Preferably, a water outlet valve is provided between the water storage tank and each of the water outlet pumps.

[0012] Preferably, all water supply pipelines that are directly connected to the residential pipelines are connected at the top floor of the building.

[0013] Another aspect of this application includes the following specific steps: Preset parameters: When all residential pipes on all floors are in use, the maximum water supply floor height for the low-pressure main pipe and medium-pressure branch pipes is set to... ,clear Floors above are supplied with water only via high-pressure pipelines; the minimum pressure required for top-floor users is preset. , and the top layer water pressure rating ; Water supply start: according to the water demand, open the water valve one between the water storage tank and the corresponding water pump, start the water pump to deliver the water in the water storage tank to the constant pressure tank, and realize the water supply of the corresponding floor by controlling the opening and closing of the corresponding control valve one of the high pressure pipeline, the medium pressure pipeline and the low pressure pipeline; Data acquisition: through the water flow detection device on the high pressure branch pipe and the medium pressure branch pipe which are not provided with the control valve two, real-time acquisition of pipeline flow data; Dynamic adjustment: based on the collected flow data, linkage adjustment of the opening degree of the control valve two and the operation frequency of the water pump, and according to the actual water pressure of the top layer Adjust the pipeline water supply mode to realize the shunting and dynamic pressure regulation of high floor water supply, and ensure the stability of water pressure of each floor and the balance of pipeline load.

[0014] Preferably, in the water supply start step, the initial configuration of different water consumption scenarios is as follows: When the daily water consumption of residents in normal state needs to be met: open the control valve one on the high pressure branch pipe directly connected with the water consumption of residents, and open any water valve one; Start the water pump corresponding to the water valve one in the start and open state, and the water pump in the start state pumps the water in the water storage tank into the constant pressure tank, and through the high pressure pipeline connected with the constant pressure tank, and through the high pressure branch pipe directly connected with the water consumption of residents to the users of each floor; When the water consumption of residents increases, the number of water pumps started is increased: open any water valve one, start the water pump corresponding to the water valve one in the start and open state, and the water pump in the start state pumps the water in the water storage tank into the constant pressure tank, and through the medium pressure pipeline and the high pressure pipeline connected with the constant pressure tank, and through the medium pressure branch pipe directly connected with the water consumption of residents to the users of each floor; When the water demand further increases, the number of water pumps started is further increased: open all water valves one and water pumps, and the water pump in the start state pumps the water in the water storage tank into the constant pressure tank, and through the high pressure pipeline, the medium pressure pipeline and the low pressure pipeline connected with the constant pressure tank, and through the medium pressure branch pipe directly connected with the water consumption of residents to the users of each floor.

[0015] Preferably, in the dynamic adjustment step, the high floor water supply shunting logic comprises: When the water consumption of the high-floor resident user is more, by closing the control valve one and the control valve two on the high-pressure branch pipe and the medium-pressure branch pipe directly connected with the resident water, opening another control valve one on the high-pressure pipeline and the medium-pressure pipeline, the water in the high-pressure pipeline bypasses the low floor and the middle floor to directly supply water to the high floor, the water in the medium-pressure pipeline bypasses the low floor to directly supply water to the middle floor and the high floor, and the low-pressure branch pipe has a large cross-sectional area, so the total head of the water in the pipeline is low to supply water to the low floor.

[0016] Preferably, in the dynamic adjustment step, the high-floor water supply diversion logic comprises: When the water consumption of the high-floor resident user is more, by closing the control valve one and the control valve two on the high-pressure branch pipe and the medium-pressure branch pipe directly connected with the resident water, opening another control valve one on the high-pressure pipeline and the medium-pressure pipeline, the water in the high-pressure pipeline bypasses the low floor and the middle floor to directly supply water to the high floor, the water in the medium-pressure pipeline bypasses the low floor to directly supply water to the middle floor and the high floor, and the low-pressure branch pipe has a large cross-sectional area, so the total head of the water in the pipeline is low to supply water to the low floor.

[0017] Preferably, in the dynamic adjustment control step, the top floor water pressure The real-time calibration formula is: Wherein: is the top floor water pressure; is the bottom floor water pressure; is the vertical height of the floor; is the pressure loss caused by resident water and pipe wall friction between the bottom floor and the top floor; When is less than , by switching the combination of the high-pressure pipeline, the medium-pressure pipeline and the low-pressure pipeline, the is maintained above the rated value.

[0018] Preferably, it further comprises a fire emergency water supply control step: When the fire pipeline is enabled, start all the water outlet pumps and open all the water outlet valves one; Open the control valve one corresponding to all the pipelines directly connected with the resident pipeline, and close other control valves one; By using the structure that the resident pipeline and the water delivery pipeline are connected at the highest floor, the water supply pressure of the fire pipeline is ensured, and the resident water is not seriously affected.

[0019] The beneficial effects of the present application are: the present application sets up high-pressure, medium-pressure and low-pressure pipelines, and dynamically adjusts the water supply mode and pressure of each pipeline according to the water demand and water consumption of different floors. It can ensure that each floor user can obtain stable water pressure at different time periods, whether it is a high-floor user or a low-floor user, can enjoy a comfortable water experience, and avoid the inconvenience and equipment damage caused by insufficient or excessive water pressure.​ According to the cross-sectional area and the lift characteristics of different pipes, the water flow is reasonably distributed, the water flow in the pipe is smoother, the equivalent height corresponding to the pipe resistance loss is reduced, the lift demand of the water pump is further reduced, and the energy consumption of the water pump is reduced. At the same time, the balanced pipe load distribution is also helpful to prolong the service life of the pipe and reduce the energy and resource consumption caused by pipe maintenance and replacement. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The schematic diagram of the pipe connection of the embodiment of the application is shown.

[0021] In the figure: 1, water storage tank; 101, water outlet valve one; 2, water outlet pump; 3, constant pressure water tank; 301, control valve one; 4, water conveying pipe; 401, high pressure branch pipe; 402, medium pressure branch pipe; 403, low pressure water pipe; 404, control valve two; 405, water flow detection device; 5, resident pipe; 6, fire fighting pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0023] REFERENCE Figure 1 The schematic diagram of a micro water supply pump station variable flow pressure regulating control system provided by the embodiment of the application is shown. Figure 1 It can be known that the micro water supply pump station variable flow pressure regulating control system comprises a water conveying pipe 4 and a constant pressure water tank 3, the water conveying pipe 4 comprises a high pressure pipe, a medium pressure pipe and a low pressure pipe, and a corresponding control valve one 301 is arranged at the connection of the high pressure pipe, the medium pressure pipe and the low pressure pipe and the constant pressure water tank 3. The high pressure pipe comprises two parallel arranged high pressure branch pipes 401, the medium pressure pipe comprises two parallel arranged medium pressure branch pipes 402, and each high pressure branch pipe 401 and medium pressure branch pipe 402 is communicated with the constant pressure water tank 3 through the corresponding control valve one 301. The low pressure pipe is an independently arranged low pressure water pipe 403, which is communicated with the constant pressure water tank 3 through the corresponding control valve one 301.

[0024] It is set that when all the resident pipes 5 of all floors are in the water use state, the limit water supply layer height of the low pressure water pipe 403 and the medium pressure branch pipe 402 is That is, the a floor and above can only be supplied with water through the high pressure pipe; in The pipe position of the floor, one is selected from the two high pressure branch pipes 401 and one is selected from the two medium pressure branch pipes 402, a total of two pipes, and the control valve two 404 is arranged correspondingly. High pressure branch pipe 401 and medium pressure branch pipe 402 with control valve two 404, one end of each is connected with the corresponding control valve one 301, the other end of each is connected with The resident pipeline 5 corresponding to the floor and below is connected; The other high pressure branch pipe 401 and the other medium pressure branch pipe 402 without control valve two 404 are both installed with water flow detection device 405; One end of the two pipelines is connected in parallel with the pipeline corresponding to the control valve two 404 Between the floor and The other end of each is connected to the corresponding control valve one 301; Through the real-time collection of pipeline flow data by the water flow detection device 405, the opening degree of the control valve two 404 and the operation frequency of the water outlet pump 2 are adjusted, so as to realize the shunting and dynamic pressure regulation of high floor water supply.

[0025] When it is necessary to meet the daily resident water, the water supply mode of the water delivery pipeline 4 is adjusted according to the resident water consumption and the concentrated distribution area of water use; When the resident water consumption is less and the water distribution is uniform: open the control valve one 301 on the high pressure branch pipe 401 directly connected with the resident water, and open any water outlet valve one 101.

[0026] Start the water outlet pump 2 corresponding to the water outlet valve one 101 in the open state, and the water outlet pump 2 in the start state pumps the water in the water storage tank 1 into the constant pressure tank 3, and then is delivered to the users of each floor through the high pressure pipeline connected with the constant pressure tank 3 and the high pressure branch pipe 401 directly connected with the resident water, so as to ensure the resident water of the users of each floor.

[0027] When the resident water consumption is more and the water distribution is uniform: increase the number of water outlet pumps 2 started: open any water outlet valve one 101, start the water outlet pump 2 corresponding to the water outlet valve one 101 in the open state, and the water outlet pump 2 in the start state pumps the water in the water storage tank 1 into the constant pressure tank 3, and then is delivered to the users of each floor through the medium pressure pipeline and the high pressure pipeline connected with the constant pressure tank 3 and the medium pressure branch pipe 402 directly connected with the resident water, so as to ensure the resident water of the users of each floor.

[0028] When the resident water consumption is more and the water distribution is largely concentrated in a certain area: close the control valve one 301 and the control valve two 404 on the high pressure branch pipe 401 directly connected with the resident water, open another control valve one 301 on the high pressure pipeline, so that the water in the high pressure pipeline bypasses the low floor and the middle floor and directly supplies water to the high floor, and the medium pressure branch pipe 402 directly supplies water to the low floor and the middle floor due to the larger cross-sectional area and the lower total head of water in the pipeline.

[0029] When the amount of water used by residents is large and the water distribution is uniform: further increase the number of water pump 2 start: open all the water outlet valve 101 and water pump 2, the water pump 2 in the starting state will be pumped into the constant pressure tank 3 in the water pool 1, and through the high pressure pipeline, medium pressure pipeline and low pressure pipeline connected with the constant pressure tank 3, and through the medium pressure branch pipe 402 directly connected with the resident water, to each layer of user, so as to ensure the resident water of each layer of user.

[0030] When the amount of water used by residents is large and the water distribution is concentrated in a certain area: by closing the control valve one 301 and the control valve two 404 directly connected with the resident water, opening another control valve one 301 located in the high pressure pipeline and the medium pressure pipeline, the water in the high pressure pipeline bypasses the low floor and the medium floor to directly supply water to the high floor, and the water in the medium pressure pipeline bypasses the low floor to directly supply water to the medium floor and the high floor, while the low pressure water pipe 403 has a larger cross-sectional area, and the total head of water in the pipeline is lower, which can supply water to the low floor.

[0031] By setting high pressure, medium pressure and low pressure pipelines, and adjusting the water supply mode and water pressure of each pipeline according to the water demand and water quantity of different floors, stable water pressure can be ensured for each layer of user at different time periods, and the energy consumption of water pump can be reduced.

[0032] In some embodiments, each floor is also provided with a fire fighting pipeline 6 connected with the high pressure branch pipe 401 with a control valve two 404.

[0033] The resident pipeline 5 is provided with three on-off valves for disconnecting the communication between the high pressure pipeline, the medium pressure pipeline and the low pressure pipeline, and each on-off valve is in the open state during normal resident water use.

[0034] By directly connecting the fire fighting pipeline 6 with the high pressure branch pipe 401, when the fire fighting pipeline 6 is started during fire fighting emergency water use, the on-off valve between the resident pipeline 5 and the high pressure pipeline is closed, so as to prevent the fire fighting water from stealing pressure from the resident water, and to keep the fire fighting pipeline 6 at high pressure.

[0035] In some embodiments, all the water supply pipelines 4 directly connected with the resident pipeline 5 are connected at the highest floor of the building, so as to avoid excessive pressure loss caused by too fast flow rate of the top layer pipeline during fire fighting water use, and to prevent the resident water and the fire fighting water from superimposing to cause insufficient fire fighting water pressure.

[0036] In some embodiments, the water outlet valve one 101 is arranged between the water storage tank 1 and each water pump 2.

[0037] Each water pump 2 is of the same type, so as to prevent low efficiency caused by parallel connection of large pump and small pump.

[0038] The water flow detection device 405 is used to collect pipeline flow data in real time. Its accuracy directly affects the opening degree of the linkage control valve 404 and the operating frequency of the outlet pump 2. The water flow detection device 405 needs to be calibrated and maintained regularly to ensure the accuracy of its measurement data.

[0039] Based on the variable flow pressure regulation control system of the micro water supply pump station, the following control method is provided: When the water flow velocity v in the two pipes is the same, let the cross-sectional areas of the two pipes be A1 and A2 respectively, and A1 <A2; By traffic It can be seen that the water flow velocity in the two pipes is... Under the same conditions, cross-sectional area The larger the pipe, the greater the flow rate of water inside. The larger.

[0040] The formula for water pump power is given as follows: ; In the formula: The density of water; It is the acceleration due to gravity; The total head of the water; This refers to the efficiency of the water pump.

[0041] Among them, total head It consists of two parts: In the formula This refers to the height that water needs to rise within the pipe. This is the equivalent height corresponding to the resistance loss.

[0042] A comparison of the power of the water pumps connected to the two pipes: ; ;in, and Let A1 and A2 be the flow rates of the pipes, respectively. and The total head of the pipes with cross-sectional areas A1 and A2 are respectively.

[0043] Compare and : ; Therefore, when two water pumps have the same power, the larger the cross-sectional area of ​​the water pipe, the lower the total head of the water in the pipe, and the greater the water flow rate.

[0044] When the daily water needs of residents under normal conditions are met: Open the control valve 301 on the high-pressure branch pipe 401 that is directly connected to the residential water supply, and open any of the outlet valves 101.

[0045] When the outlet valve 101 is in the start and open state, the outlet pump 2 corresponding to it pumps water from the water storage tank 1 into the constant pressure water tank 3. The water is then transported to the users on each floor through the high pressure pipeline connected to the constant pressure water tank 3 and the high pressure branch pipe 401 directly connected to the residential water supply, thereby ensuring the residential water supply for each user on each floor.

[0046] When residents' water consumption increases, because the cross-sectional area of ​​the high-pressure branch pipe 401 is small, if the number of water pumps 2 that are started is increased to increase the water velocity, the water pressure in the high-pressure branch pipe 401 will increase, thereby increasing the load on the pipe and potentially causing the pipe to burst.

[0047] Therefore, when residents' water consumption increases, the number of water pumps 2 that are started is increased: any water outlet valve 101 is opened, and the water pump 2 corresponding to the open water outlet valve 101 is started. The started water pump 2 pumps water from the water storage tank 1 into the constant pressure water tank 3, and delivers it to users on each floor through the medium pressure pipeline and high pressure pipeline connected to the constant pressure water tank 3, and through the medium pressure branch pipe 402 directly connected to the residents' water supply, thereby ensuring the residents' water supply on each floor.

[0048] When the water consumption of high-rise residential users is relatively high, by closing control valve 301 and control valve 404 on the high-pressure branch pipe 401 that is directly connected to the residential water supply, and opening another control valve 301 located on the high-pressure pipeline, the water in the high-pressure pipeline bypasses the low and middle floors and directly supplies water to the high floors. Meanwhile, the medium-pressure branch pipe 402, due to its larger cross-sectional area, has a lower total head of water in the pipeline and supplies water to the low and middle floors.

[0049] When water demand increases further, the number of water pumps 2 that are started is increased: all water outlet valves 101 and water pumps 2 are opened. The water pumps 2 in the started state pump water from the water storage tank 1 into the constant pressure water tank 3, and then deliver the water to the users on each floor through the high pressure pipeline, medium pressure pipeline and low pressure pipeline connected to the constant pressure water tank 3, and through the medium pressure branch pipe 402 directly connected to the residential water supply, thereby ensuring the residential water supply for the users on each floor.

[0050] When the water consumption of high-rise residential users is higher, by closing control valve 301 and control valve 404 on the high-pressure branch pipe 401 and medium-pressure branch pipe 402 that are directly connected to the residential water supply, and opening another control valve 301 located on the high-pressure pipeline and the medium-pressure pipeline, the water in the high-pressure pipeline bypasses the low and middle floors and supplies water directly to the high floors, the water in the medium-pressure pipeline bypasses the low floors and supplies water directly to the middle and high floors, and the low-pressure water pipe 403, due to its larger cross-sectional area, has a lower total head of water in the pipeline and supplies water to the low floors.

[0051] To ensure water supply for residents on the top floor, the pressure at the end of the water pipe... It must be greater than or equal to the minimum pressure required by the top-level user. It is usually 0.1 0.3MPa.

[0052] ; in: This refers to the top water pressure. For bottom water pressure; The vertical height of the floor; This refers to the pressure loss caused by the friction between the residential water supply and the pipe walls between the bottom and top floors.

[0053] It can be known The larger, The smaller the volume, the greater the water consumption or number of water users between the bottom and top floors. The smaller it is, the better, in order to make it smaller It can still maintain the required size whenever Less than the rated value In such cases, the above process can be used to change the pipeline water delivery method, thereby ensuring the water delivery volume while... Keep above the rated value.

[0054] When a fire occurs on a floor and firefighting water is needed, firefighters use the fire pipeline 6 connected to the high-pressure branch 401 to supply water. Due to the fire, residents use a surge in water for self-rescue. At this time, all water pumps 2 are activated, and all water outlet valves -101 and control valves -301 on the pipes connected to the residential pipeline 5 are opened, while other control valves -301 remain closed. Since all pipes directly connected to the residential pipeline 5 are connected on the top floor, the firefighting operation should prioritize the pressure of the fire pipeline during firefighting operations, and the "fire priority logic" must be met. For example, when the fire is started, the on / off valves between the residential pipeline 5 and the high-pressure pipeline are closed to prevent firefighting water from competing with residential water for pressure.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A variable flow and pressure regulation control system for a micro water supply pump station, characterized in that, It includes a water storage tank, multiple water pumps, a constant pressure water tank, and a pipeline system consisting of high-pressure pipelines, medium-pressure pipelines, and low-pressure pipelines; the water storage tank is connected to the constant pressure water tank through the multiple water pumps, and the constant pressure water tank is connected to the residential pipelines on each floor through the pipeline system; Each of the high-pressure, medium-pressure, and low-pressure pipelines is equipped with a corresponding control valve at its connection to the constant pressure water tank. The high-pressure pipeline includes two parallel high-pressure branch pipes, and the medium-pressure pipeline includes two parallel medium-pressure branch pipes. Each high-pressure branch pipe and each medium-pressure branch pipe is connected to the constant pressure water tank through a corresponding control valve. The low-pressure pipeline is an independently installed low-pressure main pipe, which is connected to the constant pressure water tank through a corresponding control valve. Setting: When all residential water pipes on all floors are in use, the maximum water supply floor height for the low-pressure water pipe and the medium-pressure branch pipe is... ;exist At the location of the pipeline on the floor, one of the two high-pressure branches and one of the two medium-pressure branches are selected, for a total of two pipelines, and control valve two is installed on each of them; The high-pressure and medium-pressure branch pipes, each equipped with control valve two, are connected at one end to their respective control valve one, and at the other end to... The corresponding pipework connections should be made for residents on floors 1 and below; Water flow detection devices are installed on both the other high-pressure branch pipe and the other medium-pressure branch pipe, which do not have control valve two installed. One end of each of these two pipes is connected in parallel to the corresponding pipe equipped with control valve two. Floors and Between floors, the other end is connected to its respective control valve; By collecting pipeline flow data in real time through a water flow detection device, the opening degree of control valve two and the operating frequency of the outlet pump are adjusted in conjunction with the flow to achieve water diversion and dynamic pressure regulation for high-rise buildings.

2. The micro water supply pump station variable flow and pressure regulation control system according to claim 1, characterized in that, Each floor is also equipped with fire protection piping connected to a high-pressure branch pipe with control valve two.

3. The micro water supply pump station variable flow and pressure regulation control system according to claim 1, characterized in that, Each of the water storage tanks and each of the water pumps is equipped with a water outlet valve.

4. The micro water supply pump station variable flow and pressure regulation control system according to claim 1, characterized in that, All water supply pipes that are directly connected to the residential pipes are connected on the top floor of the building.

5. A control method for a micro water supply pump station variable flow pressure regulation control system as described in any one of claims 1-4, characterized in that, The specific steps include the following: Preset parameters: When all residential pipes on all floors are in use, the maximum water supply floor height for the low-pressure main pipe and medium-pressure branch pipes is set to [value missing]. ,clear Floors above are supplied with water only via high-pressure pipelines; the minimum pressure required for top-floor users is preset. , and the rated water pressure at the top floor ; Water supply start-up: According to water demand, open the outlet valve 1 between the water storage tank and the corresponding outlet pump, start the outlet pump to transport the water in the water storage tank to the constant pressure water tank, and realize the water supply of the corresponding floor by controlling the opening and closing of the control valve 1 corresponding to the high pressure pipeline, medium pressure pipeline and low pressure pipeline. Data acquisition: Real-time pipeline flow data is collected through water flow detection devices on the high-pressure and medium-pressure branch pipes without control valve 2; Dynamic adjustment: Based on the collected flow data, the opening degree of control valve two and the operating frequency of the outlet pump are adjusted in conjunction with the actual water pressure at the top. Adjust the water supply mode of the pipeline to achieve water diversion and dynamic pressure regulation for high-rise buildings, ensuring stable water pressure on each floor and balanced pipeline load.

6. The variable flow and pressure regulation control method for a micro water supply pump station according to claim 5, characterized in that, The initial configurations for different water consumption scenarios during the water supply startup process are as follows: When it is necessary to meet the daily water needs of residents under normal conditions: open the control valve on the high-pressure branch pipe directly connected to the residential water supply and open any outlet valve. The outlet valve in the start and open states corresponds to the outlet pump. The outlet pump in the start state pumps water from the water storage tank into the constant pressure water tank, and then delivers it to users on each floor through the high pressure pipeline connected to the constant pressure water tank and the high pressure branch pipe directly connected to the residents' water supply. When residents' water consumption increases, the number of water pumps started will be increased: open any one of the water outlet valves and start the water pump corresponding to the open water outlet valve. The started water pump will pump the water in the water storage tank into the constant pressure water tank, and then deliver it to each user on each floor through the medium pressure pipeline and high pressure pipeline connected to the constant pressure water tank, and through the medium pressure branch pipe directly connected to the residents' water supply. As water demand increases further, the number of water pumps started will be increased: all water outlet valves and water pumps will be opened, and the pumps in the starting state will pump water from the water storage tank into the constant pressure water tank, and then deliver it to users on each floor through high-pressure pipelines, medium-pressure pipelines and low-pressure pipelines connected to the constant pressure water tank, and through medium-pressure branch pipes directly connected to the residents' water supply.

7. The variable flow and pressure regulation control method for a micro water supply pump station according to claim 5, characterized in that, The dynamic adjustment step includes the following high-floor water supply diversion logic: When the water consumption of high-rise residential users is relatively high, by closing control valve one and control valve two on the high-pressure branch pipe directly connected to the residential water supply, and opening another control valve one located on the high-pressure pipeline, the water in the high-pressure pipeline bypasses the low and middle floors and directly supplies water to the high floors. Meanwhile, the medium-pressure branch pipe, due to its larger cross-sectional area, has a lower total head of water in the pipeline and supplies water to the low and middle floors.

8. The variable flow and pressure regulation control method for a micro water supply pump station according to claim 7, characterized in that, The dynamic adjustment step includes the following high-floor water supply diversion logic: When the water consumption of high-rise residential users is higher, by closing control valves one and two on the high-pressure and medium-pressure branch pipes directly connected to the residential water supply, and opening another control valve one on the high-pressure and medium-pressure pipelines, the water in the high-pressure pipeline bypasses the low and middle floors and supplies water directly to the high floors. The water in the medium-pressure pipeline bypasses the low floors and supplies water directly to the middle and high floors. The low-pressure branch pipe, due to its larger cross-sectional area, has a lower total head of water in the pipeline and supplies water to the low floors.

9. The variable flow and pressure regulation control method for a micro water supply pump station according to claim 5, characterized in that, In the aforementioned dynamic adjustment and control step, the top water pressure The real-time calibration formula is: ; in: This refers to the top water pressure. For bottom water pressure; The vertical height of the floor; This refers to the pressure loss caused by friction between the residential water supply and the pipe walls between the ground floor and the top floor. when Less than At the same time, by switching between high-pressure, medium-pressure, and low-pressure pipelines in a combined water supply mode, the water supply can be guaranteed. Maintain above the rated value.

10. The method for variable flow and pressure regulation control of a micro water supply pump station according to claim 5, characterized in that, It also includes fire emergency water supply control procedures: When the fire pipeline is put into use, start all water pumps and open all water valves. Open control valve 1 for all pipes directly connected to the residential pipes, and close control valve 1 for the other pipes; By utilizing the structure where residential pipelines and water supply pipelines are connected on the top floor, the water supply pressure of the fire protection pipelines is guaranteed while avoiding serious impact on residents' water use.

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