Building pressurized water supply tail end pressure stabilizing and energy saving control method and device and electronic equipment

Abstract

The invention provides a building pressurized water supply tail end pressure stabilization energy-saving control method and device and electronic equipment, and relates to the technical field of building water supply energy-saving control, and the method comprises the steps: judging whether the pressure value of the highest tail end or the pressure value of the farthest tail end at the second highest position meets a preset condition or not; when the highest tail end pressure value or the second-height farthest tail end pressure value meets a preset condition, the highest tail end pressure value and the second-height farthest tail end pressure value are compared, and the smaller value is selected as the most disadvantageous control point; the tail end pressure of the most disadvantageous control point is controlled to be a preset threshold value through the regulation and control pump set, and pressure stabilizing and energy saving control over the building pressurized water supply tail end is achieved. According to the method, the pressure values of the tail end of the highest floor and the tail end of the longest branch pipe of the horizontal pipeline of the secondary high floor of the building are dynamically monitored, the most unfavorable working condition point in an actual pipe network is selected as the regulation and control reference, the tail end water pressure is accurately stabilized at the preset threshold value, and the problem that the water use experience is poor due to fluctuation of the water outlet pressure of a user is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of building water supply energy-saving control, and in particular to a method, device and electronic equipment for controlling pressure stabilization and energy saving at the terminal of pressurized water supply in a building. Background Art

[0002] Existing methods for controlling pressurized water supply in buildings primarily rely on controlling the pressure at the main outlet of the pump group, known as the pump outlet pressure, to achieve pressurized water supply throughout the building. While this constant pressure control causes the pressure at the end of the water supply system to fluctuate with water consumption, this can negatively impact the user experience due to fluctuating water pressure at the end user. Furthermore, when water consumption is low, the excess pressure provided by the water supply system can waste energy.

[0003] Most existing technologies use multiple sources of energy for the PLC, such as adding solar energy and batteries to reduce the energy consumption of the control system; or, based on the water pressure after the pump, optimize the start and frequency of the pump group through PLC control to achieve reduced energy consumption in the water supply system; or, by adding pressure sensors and pressure-stabilizing tanks at the water supply end, through combined pump group control and terminal pressure-stabilizing tank water supply, meet the terminal pressure while reducing energy consumption. Existing technologies mainly focus on the control method of traditional post-pump pressure stabilization, achieving energy conservation and consumption reduction by adjusting and optimizing the start and frequency of the pump. However, by adding a large number of equipment, it increases the difficulty of operation and maintenance management and the difficulty of calculation, and lacks reliability.

[0004] Therefore, a method, device and electronic equipment for controlling pressure stabilization and energy saving at the terminal of pressurized water supply in a building are proposed. Summary of the Invention

[0005] This specification provides a method, device and electronic equipment for controlling the pressure stabilization and energy saving of the terminal of pressurized water supply in a building. By dynamically monitoring the pressure values at the terminal of the highest floor of the building and the terminal of the longest branch of the horizontal pipeline on the second highest floor, the most unfavorable operating point in the actual pipeline network is selected as the control benchmark, and the terminal water pressure is accurately stabilized at a preset threshold, thereby solving the problem of poor water use experience caused by fluctuations in water outlet pressure for users.

[0006] This specification provides a method for controlling pressure stabilization and energy saving at the end of pressurized water supply in a building, including: Obtain the pressure value at the highest end and the pressure value at the farthest end of the second highest end; Determine whether the highest end pressure value or the second highest end pressure value satisfies a preset condition; When the highest end pressure value or the second highest end pressure value satisfies the preset condition, the highest end pressure value and the second highest end pressure value are compared and the smaller value is selected as the most unfavorable control point; By regulating the pump group, the terminal pressure of the most unfavorable control point is controlled within a preset threshold value, thereby achieving pressure stabilization and energy-saving control at the terminal of the building's pressurized water supply.

[0007] Optionally, also include: Get the water outlet pressure value after the pump; When the highest terminal pressure value or the second highest farthest terminal pressure value does not meet the preset conditions, the pump group is regulated based on the water outlet pressure value after the pump to achieve pressure stabilization and energy-saving control of the building pressurized water supply terminal.

[0008] Optionally, the preset threshold is 0.1MPa~0.15MPa.

[0009] Optionally, a method for determining the sensor installation point corresponding to the highest end pressure value and / or the second highest farthest end pressure value includes: Get building floor plans; Identifying locations of all terminal water points based on the building floor plan; Based on the locations of all the terminal water use points, respectively determine the horizontal pipe length from each terminal water use point location to the water supply riser; The Darcy friction coefficient is matched based on the pipe type, and the pressure loss value of each end water point is determined based on the horizontal pipe length from the end water point to the water supply riser. The end water point position corresponding to the maximum pressure loss value is used as the sensor installation point.

[0010] Optionally, the step of controlling the terminal pressure of the most unfavorable control point to a preset threshold by regulating the pump group to achieve pressure stabilization and energy-saving control at the terminal of the building pressurized water supply includes: When the terminal pressure of the most unfavorable control point is lower than the preset threshold, the operating frequency of the pump group is increased and / or the number of water pumps in the pump group is increased.

[0011] Optionally, the step of controlling the terminal pressure of the most unfavorable control point to a preset threshold by regulating the pump group to achieve pressure stabilization and energy-saving control at the terminal of the pressurized water supply of the building further includes: When the terminal pressure of the most unfavorable control point is higher than the preset threshold, the operating frequency of the pump group is reduced and / or the number of water pumps of the pump group is reduced or stopped.

[0012] Optionally, also include: When the terminal pressure of the most unfavorable control point is higher than and / or lower than the preset threshold value and exceeds a preset time, the sound and light alarm is triggered.

[0013] This specification provides a pressure stabilizing and energy-saving control device for building pressurized water supply terminals, including: An acquisition module is used to obtain the pressure value of the highest end and the pressure value of the farthest end at the second highest point; A judgment module, configured to judge whether the pressure value at the highest end or the pressure value at the farthest end of the second highest end meets a preset condition; a comparison module, configured to compare the highest end pressure value with the second highest end pressure value when the highest end pressure value or the second highest end pressure value satisfies the preset condition, and select the smaller value as the most unfavorable control point; The control module is used to control the terminal pressure of the most unfavorable control point within a preset threshold by regulating the pump group, thereby achieving pressure stabilization and energy-saving control at the terminal of the building's pressurized water supply.

[0014] Optionally, also include: Get the water outlet pressure value after the pump; When the highest terminal pressure value or the second highest farthest terminal pressure value does not meet the preset conditions, the pump group is regulated based on the water outlet pressure value after the pump to achieve pressure stabilization and energy-saving control of the building pressurized water supply terminal.

[0015] Optionally, the preset threshold is 0.1MPa~0.15MPa.

[0016] Optionally, a method for determining the sensor installation point corresponding to the highest end pressure value and / or the second highest farthest end pressure value includes: Get building floor plans; Identifying locations of all terminal water points based on the building floor plan; Based on the locations of all the terminal water use points, respectively determine the horizontal pipe length from each terminal water use point location to the water supply riser; The Darcy friction coefficient is matched based on the pipe type, and the pressure loss value of each end water point is determined based on the horizontal pipe length from the end water point to the water supply riser. The end water point position corresponding to the maximum pressure loss value is used as the sensor installation point.

[0017] Optionally, the control module includes: When the terminal pressure of the most unfavorable control point is lower than the preset threshold, the operating frequency of the pump group is increased and / or the number of water pumps in the pump group is increased.

[0018] Optionally, the control module further includes: When the terminal pressure of the most unfavorable control point is higher than the preset threshold, the operating frequency of the pump group is reduced and / or the number of water pumps of the pump group is reduced or stopped.

[0019] Optionally, also include: When the terminal pressure of the most unfavorable control point is higher than and / or lower than the preset threshold value and exceeds a preset time, the sound and light alarm is triggered.

[0020] This specification also provides an electronic device, wherein the electronic device includes: A processor; and a memory storing computer-executable instructions, which, when executed, cause the processor to perform any of the above methods.

[0021] This specification also provides a computer-readable storage medium, wherein the computer-readable storage medium stores one or more programs, and when the one or more programs are executed by a processor, any of the above methods is implemented.

[0022] In this invention, by dynamically monitoring the pressure values at the end of the highest floor of the building and the end of the longest branch of the horizontal pipeline on the second highest floor, the most unfavorable operating point in the actual pipeline network is selected as the control benchmark, and the terminal water pressure is accurately stabilized in the range of 0.1-0.15 MPa, solving the problem of poor water experience caused by fluctuations in the water outlet pressure of users; at the same time, by eliminating the excess pressure head in the pipeline network, energy waste during low flow periods is significantly reduced. When the terminal sensor fails, this method automatically switches to post-pump pressure control to ensure continuous water supply, and only requires the addition of two terminal pressure sensors, without the need for complex equipment such as a pressure regulating tank. This effectively avoids the operation and maintenance burden and reliability risks caused by the large-scale addition of equipment in the existing technology, and achieves a triple improvement in water comfort, energy economy, and system reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0024] Figure 1 A schematic diagram of the principle of a method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply for a building provided in an embodiment of this specification; Figure 2 This is a schematic diagram of the terminal pressure stabilization control of the building pressurized water supply provided in the embodiment of this specification; Figure 3 A schematic diagram of a daily water consumption curve for residential areas provided in the embodiments of this specification; Figure 4 Schematic diagram of the most unfavorable point pressure under different pressure control modes provided in the embodiments of this specification; Figure 5 Schematic diagram of water pump frequency and pump outlet pressure under different pressure control modes provided in the embodiments of this specification; Figure 6 Schematic diagram of comprehensive efficiency and power under different pressure control modes provided in the embodiments of this specification; Figure 7This is a schematic diagram of energy consumption under different pressure control modes provided in the embodiments of this specification; Figure 8 A schematic diagram of a pressure stabilizing and energy-saving control device for a building pressurized water supply terminal provided in an embodiment of this specification; Figure 9 A schematic diagram of the structure of an electronic device provided in an embodiment of this specification; Figure 10 A schematic diagram of a computer-readable medium provided in accordance with an embodiment of this specification.

[0025] The attached figure shows: 1. Water tank; 2. Pump group; 3. Control system; 4. Pressure sensor after the pump; 5. Main water meter; 6. Gate valve; 7. Pressure reducing valve; 8. Electric valve; 9. Flow meter; 10. Highest end pressure sensor; 11. Second highest and farthest end pressure sensors. DETAILED DESCRIPTION

[0026] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0027] The following is combined with Figure 1-10 The exemplary embodiments of the present invention are described more fully. However, the exemplary embodiments can be implemented in various forms, and the present invention should not be construed as being limited to the embodiments set forth herein. On the contrary, providing these exemplary embodiments enables the present invention to be more comprehensive and complete, and more conveniently conveys the inventive concept to those skilled in the art. In the figures, the same reference numerals represent the same or similar elements, components, or parts, and thus their repeated description will be omitted.

[0028] Under the premise of being consistent with the technical concept of the present invention, the features, structures, characteristics or other details described in a specific embodiment do not exclude that they can be combined in one or more other embodiments in a suitable manner.

[0029] In the description of specific embodiments, the features, structures, characteristics, or other details of the present invention are described to enable those skilled in the art to fully understand the embodiments. However, this does not preclude those skilled in the art from practicing the technical solutions of the present invention without one or more of the specific features, structures, characteristics, or other details.

[0030] The flowcharts shown in the accompanying drawings are for illustrative purposes only and do not necessarily include all contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps may be decomposed, while others may be combined or partially combined. Therefore, the actual execution order may vary depending on the actual situation.

[0031] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0032] The term "and / or" or "and / or" includes all combinations of any one or more of the associated listed items.

[0033] Figure 1 This is a schematic diagram of a method for controlling pressure stabilization and energy saving at the terminal of a pressurized water supply in a building provided in an embodiment of this specification. The method may include: S110: Obtain the pressure value of the highest end and the pressure value of the second highest end; Optionally, a method for determining the sensor installation point corresponding to the highest end pressure value and / or the second highest farthest end pressure value includes: Get building floor plans; Identifying locations of all terminal water points based on the building floor plan; Based on the locations of all the terminal water use points, respectively determine the horizontal pipe length from each terminal water use point location to the water supply riser; The Darcy friction coefficient is matched based on the pipe type, and the pressure loss value of each end water point is determined based on the horizontal pipe length from the end water point to the water supply riser. The end water point position corresponding to the maximum pressure loss value is used as the sensor installation point.

[0034] In the specific implementation of this specification, Figure 2 As shown, the water pool 1 is connected to the pump group 2, the pump group 2 is respectively connected to the pump rear pressure sensor 4 and the total water meter 5, the pump rear pressure sensor 4 is connected to the control system 3, the control system 3 is respectively connected to the highest end pressure sensor 10 and the second highest farthest end pressure sensor 11, the total water meter 5 is respectively connected to the gate valve 6, the pressure reducing valve 7, the electric valve 8, the flow meter 9, the highest end pressure sensor 10, and the second highest farthest end pressure sensor 11, the gate valve 6 is respectively connected to the pressure reducing valve 7, the highest end pressure sensor 10, and the second highest farthest end pressure sensor 11, the pressure reducing valve 7 is connected to the electric valve 8, and the electric valve 8 is connected to the flow meter 9.

[0035] The pressure loss value at each terminal water use point is determined based on the horizontal pipe length from each terminal water use point to the water supply riser. That is, the pressure loss at each terminal point is calculated according to the formula ΔP = f×(L / D)×(ρv² / 2), where ΔP is the pressure loss value at the terminal water use point, f is the Darcy friction coefficient, L is the horizontal pipe length, D is the pipe diameter (obtained from the construction drawing database), v is the real-time flow velocity (collected by flow meter 9), and ρ is the water density.

[0036] S120: Determine whether the highest end pressure value or the second highest end pressure value satisfies a preset condition; In the specific implementation of this specification, it is to determine whether the pressure values transmitted by the highest end pressure sensor 10 and the second highest and farthest end pressure sensor 11 are missing or erroneous.

[0037] S130: When the highest end pressure value or the second highest end pressure value satisfies the preset condition, the highest end pressure value and the second highest end pressure value are compared, and the smaller value is selected as the most unfavorable control point; S140: The terminal pressure of the most unfavorable control point is controlled within a preset threshold value by regulating the pump group, thereby achieving pressure stabilization and energy-saving control at the terminal of the building's pressurized water supply.

[0038] Optionally, the preset threshold is 0.1MPa~0.15MPa.

[0039] Optionally, the S140 includes: When the terminal pressure of the most unfavorable control point is lower than the preset threshold, the operating frequency of the pump group is increased and / or the number of water pumps in the pump group is increased.

[0040] Optionally, the S140 further includes: When the terminal pressure of the most unfavorable control point is higher than the preset threshold, the operating frequency of the pump group is reduced and / or the number of water pumps of the pump group is reduced or stopped.

[0041] In the specific implementation of this specification, when the pressure falls below 0.1 MPa, the inverter output frequency is gradually increased. If the pressure is still insufficient even after the frequency reaches the upper limit, an additional water pump is started according to the first-in-first-out principle. When the pressure exceeds 0.15 MPa, the inverter output frequency is gradually reduced. If the pressure still exceeds the limit even after the frequency drops to the lower limit, a water pump is stopped according to the first-in-first-out principle. It is worth noting that the frequency reduction adjustment rate needs to be limited to a preset range to avoid water hammer.

[0042] Optionally, also include: Get the water outlet pressure value after the pump; When the highest terminal pressure value or the second highest farthest terminal pressure value does not meet the preset conditions, the pump group is regulated based on the water outlet pressure value after the pump to achieve pressure stabilization and energy-saving control of the building pressurized water supply terminal.

[0043] Optionally, also include: When the terminal pressure of the most unfavorable control point is higher than and / or lower than the preset threshold value and exceeds a preset time, the sound and light alarm is triggered.

[0044] In the specific embodiment of this specification, when the pressure after the pump exceeds the upper pressure limit, the control system opens the pressure reducing valve 7 to quickly release the pressure. Of course, when the terminal pressure of the most unfavorable control point is higher and / or lower than the preset threshold value and exceeds the preset time, the electric valve 8 is closed and the sound and light alarm is triggered.

[0045] Through the building pressurized storage and water supply test platform to simulate user water use experiments, the energy consumption difference between the pump outlet constant pressure and terminal pressure stabilization control methods was compared. In combination with the actual pilot project, the water consumption data of a residential area on a certain day was used to design the experiment. The water consumption curve is as follows Figure 3 shown.

[0046] The test consists of two parts: the pump outlet constant pressure test and the terminal pressure stabilization test. The specific pressure control comparison is shown in Table 1.

[0047] Table 1 Pressure control comparison table from Figure 4 From the pressure fluctuation law of the most unfavorable point at different times, it can be seen that the pressure fluctuation of the most unfavorable point in the two working conditions of constant pressure at the pump outlet changes greatly with the water use law. The greater the pump outlet pressure, the greater the pressure fluctuation at the most unfavorable point, and under low flow conditions, the terminal pressure at the most unfavorable point is greater, which is related to the reduction of head loss in the water supply system; most of the time when the pump outlet constant pressure is 0.35MPa, the pressure at the most unfavorable point exceeds 0.20MPa, which is higher than the design standard, and the pressure fluctuation range is 0.15MPa~0.25MPa, with a pressure fluctuation difference of 0.10MPa, while the pressure fluctuation range under the working condition of constant pressure at the pump outlet is 0.30MPa, with a pressure fluctuation difference of 0.15MPa~0.20MPa, and a pressure fluctuation difference of 0.5MPa, which is nearly half of the pressure fluctuation difference under the working condition of 0.35MPa; under the two working conditions of terminal pressure stabilization, the terminal pressure is stabilized by adjusting and controlling the pump outlet pressure, and the overall terminal pressure is relatively stable with changes in water use law. Figure 4By comparing the average pressure at the most unfavorable point and the minimum pressure at the most unfavorable point, it can be seen that under the condition of a constant pressure of 0.35 MPa at the pump outlet, the average pressure at the most unfavorable point is 0.217 MPa, which is 0.2 MPa higher than the design standard. Pressure reduction measures need to be taken, which will cause energy waste. The average pressure at the pump outlet constant pressure of 0.35 MPa is 0.038 MPa higher than the average pressure at the pump outlet constant pressure of 0.30 MPa. However, the minimum pressure values of the most unfavorable points under the two conditions of constant pressure at the pump outlet are relatively close, which are 0.159 MPa and 0.151 MPa respectively. The pump outlet constant pressure of 0.50 MPa is slightly higher than the pump outlet constant pressure of 0.45 MPa by 0.008 MPa. The terminal steady pressure condition is controlled at 0.15 MPa, and the minimum pressure is 0.141 MPa. The terminal steady pressure condition is controlled at 0.11 MPa, and the minimum pressure is 0.103 MPa, which meets the design standard requirement of 0.1 MPa.

[0048] from Figure 5 From the water pump frequency variation pattern, it can be seen that the water pump frequency of the four working conditions is consistent with the water use pattern, and the operating frequencies of the water pumps in different working conditions are as follows: pump outlet constant pressure 0.35MPa, pump outlet constant pressure 0.30MPa, terminal steady pressure 0.15MPa, terminal steady pressure 0.11MPa; the difference in water pump operating frequency is greater during low-peak water use periods (0:00~6:00 and 10:00~18:00), and smaller during peak water use periods (6:00~9:00 and 19:00~22:00). Figure 5 The variation pattern of the pump outlet pressure shows that the pump outlet pressure fluctuations are relatively large in the two working conditions of terminal pressure stabilization. The pump outlet pressure fluctuation range of the working condition of terminal pressure stabilization of 0.11 MPa is 0.22 MPa~0.25 MPa, and the pressure difference is 0.03 MPa; the pump outlet pressure fluctuation range of the working condition of terminal pressure stabilization of 0.15 MPa is 0.25 MPa~0.30 MPa, and the pressure difference is 0.05 MPa. The pressure value of the terminal pressure stabilization of 0.15 MPa is greater than 0.11 MPa. Comparing the pump outlet pressure fluctuation error with the pressure fluctuation error at the most unfavorable point, it is found that the pump outlet pressure fluctuation error of the working condition of terminal pressure stabilization of 0.15 MPa is consistent with the pressure fluctuation error at the most unfavorable point of the working condition of constant pressure of 0.30 MPa, both of which are 0.05 MPa.

[0049] from Figure 6 From the time variation of comprehensive efficiency, it can be seen that the time variation rules of comprehensive efficiency of the four working conditions are roughly the same, which is also consistent with the change of water use rules, and the comprehensive efficiency of the four working conditions is not much different. Figure 6The temporal variation in medium power shows that the operating power of the four operating conditions closely resembles the water usage patterns of residential users. However, during low-peak water usage periods (00:00-6:00 and 10:00-18:00), the operating power of the four operating conditions ranked from highest to lowest: constant pump outlet pressure of 0.35 MPa, constant pump outlet pressure of 0.30 MPa, terminal regulated pressure of 0.15 MPa, and terminal regulated pressure of 0.11 MPa. During peak water usage periods (6:00-9:00 and 19:00-22:00), the operating power of the four operating conditions varied slightly, which is related to the pumps operating in their high-efficiency range. The operating power of the pumps operating in the 0.15 MPa terminal regulated pressure condition was slightly higher than that of the 0.11 MPa terminal regulated pressure condition, and the higher the water flow rate, the closer the pumps approached their high-efficiency range. This indicates that when the terminal regulated pressure is lower, the pumps operating power decreases when operating in their low-efficiency range.

[0050] from Figure 7 From the 5-minute energy consumption variation patterns under the four working conditions, it can be seen that the variation patterns of the overall energy consumption under the four working conditions are similar to the water consumption patterns of residential users. However, during the low-peak water consumption period (0:00~6:00 and 10:00~18:00), the energy consumption under the two working conditions of constant pressure at the pump outlet is significantly higher than the energy consumption under the two working conditions of terminal pressure stabilization. During the peak water consumption period (6:00~9:00 and 19:00~22:00), the energy consumption under the two working conditions of constant pressure at the pump outlet is slightly higher than the energy consumption under the two working conditions of terminal pressure stabilization. This is mainly due to the change in the operating power of the water pump. Figure 7 The energy consumption per ton of water under different operating conditions shows that the two operating conditions with constant outlet pressure are similar. The energy consumption of the 0.35 MPa outlet constant pressure condition is 0.270 KWh / m3, which is higher than the 0.30 MPa outlet constant pressure condition (0.239 KWh / m3), indicating that higher pump outlet pressure increases energy consumption. The energy consumption per ton of water under the 0.15 MPa terminal pressure stabilization condition (0.221 KWh / m3) is 0.024 KWh / m3 higher than the 0.11 MPa terminal pressure stabilization condition (0.197 KWh / m3). The 0.11 MPa terminal pressure stabilization condition can save 10.86% energy compared to the 0.15 MPa terminal pressure stabilization condition. This shows that, assuming the terminal pressure meets the minimum design pressure, lower terminal pressure leads to greater energy savings. The pump outlet pressure fluctuation error for the 0.15 MPa terminal pressure stabilization condition mentioned above is consistent with the most unfavorable point pressure fluctuation error for the 0.30 MPa constant outlet pressure condition. A comparison of the energy consumption of the two conditions revealed that the energy consumption per ton of water for the 0.11 MPa terminal pressure stabilization condition differed by 0.018 KWh / m³ compared to the 0.30 MPa constant outlet pressure condition, representing a 7.5% energy saving compared to the latter. Although energy savings can be achieved by reducing the pump outlet pressure, seasonal changes in water usage patterns may create a risk of insufficient terminal water supply pressure. This risk of insufficient terminal pressure can be avoided through terminal pressure stabilization, achieving energy savings and consumption reductions.

[0051] In this invention, by dynamically monitoring the pressure values at the end of the highest floor of the building and the end of the longest branch of the horizontal pipeline on the second highest floor, the most unfavorable operating point in the actual pipeline network is selected as the control benchmark, and the terminal water pressure is accurately stabilized in the range of 0.1-0.15 MPa, solving the problem of poor water experience caused by fluctuations in the water outlet pressure of users; at the same time, by eliminating the excess pressure head in the pipeline network, energy waste during low flow periods is significantly reduced. When the terminal sensor fails, this method automatically switches to post-pump pressure control to ensure continuous water supply, and only requires the addition of two terminal pressure sensors, without the need for complex equipment such as a pressure regulating tank. This effectively avoids the operation and maintenance burden and reliability risks caused by the large-scale addition of equipment in the existing technology, and achieves a triple improvement in water comfort, energy economy, and system reliability.

[0052] Figure 8 The schematic diagram of the principle of a pressure stabilizing and energy-saving control device for a building pressurized water supply terminal provided in an embodiment of this specification may include: An acquisition module 10 is used to obtain the pressure value of the highest end and the pressure value of the farthest end at the second highest end; A judgment module 20 is used to judge whether the pressure value at the highest end or the pressure value at the second highest end meets a preset condition; A comparison module 30 is configured to compare the highest end pressure value with the second highest end pressure value when the highest end pressure value or the second highest end pressure value satisfies the preset condition, and select the smaller value as the most unfavorable control point; The control module 40 is used to control the terminal pressure of the most unfavorable control point within a preset threshold by regulating the pump group, thereby achieving pressure stabilization and energy-saving control at the terminal of the building's pressurized water supply.

[0053] Optionally, also include: Get the water outlet pressure value after the pump; When the highest terminal pressure value or the second highest farthest terminal pressure value does not meet the preset conditions, the pump group is regulated based on the water outlet pressure value after the pump to achieve pressure stabilization and energy-saving control of the building pressurized water supply terminal.

[0054] Optionally, the preset threshold is 0.1MPa~0.15MPa.

[0055] Optionally, a method for determining the sensor installation point corresponding to the highest end pressure value and / or the second highest farthest end pressure value includes: Get building floor plans; Identifying locations of all terminal water points based on the building floor plan; Based on the locations of all the terminal water use points, respectively determine the horizontal pipe length from each terminal water use point location to the water supply riser; The Darcy friction coefficient is matched based on the pipe type, and the pressure loss value of each end water point is determined based on the horizontal pipe length from the end water point to the water supply riser. The end water point position corresponding to the maximum pressure loss value is used as the sensor installation point.

[0056] Optionally, the control module 40 includes: When the terminal pressure of the most unfavorable control point is lower than the preset threshold, the operating frequency of the pump group is increased and / or the number of water pumps in the pump group is increased.

[0057] Optionally, the control module 40 further includes: When the terminal pressure of the most unfavorable control point is higher than the preset threshold, the operating frequency of the pump group is reduced and / or the number of water pumps of the pump group is reduced or stopped.

[0058] Optionally, also include: When the terminal pressure of the most unfavorable control point is higher than and / or lower than the preset threshold value and exceeds a preset time, the sound and light alarm is triggered.

[0059] The functions of the device in the embodiment of the present invention have been described in the above method embodiment. Therefore, for details not fully described in this embodiment, please refer to the relevant description in the above embodiment and will not be repeated here.

[0060] Based on the same inventive concept, an embodiment of this specification also provides an electronic device.

[0061] The following describes an electronic device embodiment of the present invention, which can be considered a specific physical implementation of the method and apparatus embodiments of the present invention described above. Details described in the electronic device embodiment of the present invention should be considered supplementary to the above-mentioned method or apparatus embodiments; details not disclosed in the electronic device embodiment of the present invention can be implemented with reference to the above-mentioned method or apparatus embodiments.

[0062] Figure 9 This is a schematic diagram of the structure of an electronic device provided in the embodiment of this specification. Figure 9 The electronic device 300 according to this embodiment of the present invention will be described. Figure 9 The electronic device 300 shown is merely an example and should not limit the functions and scope of use of the embodiments of the present invention.

[0063] like Figure 9 As shown, electronic device 300 is implemented as a general-purpose computing device. Components of electronic device 300 may include, but are not limited to, at least one processing unit 310, at least one storage unit 320, a bus 330 connecting various system components (including storage unit 320 and processing unit 310), and a display unit 340.

[0064] The storage unit stores program codes that can be executed by the processing unit 310, so that the processing unit 310 performs the steps according to various exemplary embodiments of the present invention described in the above processing method section of this specification. For example, the processing unit 310 can perform the following steps: Figure 1 Steps shown.

[0065] The storage unit 320 may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) 3201 and / or a cache memory unit 3202 , and may further include a read-only memory unit (ROM) 3203 .

[0066] The storage unit 320 may also include a program / utility 3204 having a set (at least one) of program modules 3205, such program modules 3205 including but not limited to: an operating system, one or more application programs, other program modules and program data, each of which or some combination may include an implementation of a network environment.

[0067] Bus 330 may represent one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0068] The electronic device 300 may also communicate with one or more external devices 400 (e.g., keyboards, pointing devices, Bluetooth devices, etc.), one or more devices that enable viewers to interact with the electronic device 300, and / or any device that enables the electronic device 300 to communicate with one or more other computing devices (e.g., routers, modems, etc.). Such communication may be performed through an input / output (I / O) interface 350. Furthermore, the electronic device 300 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) through a network adapter 360. The network adapter 360 may communicate with other modules of the electronic device 300 through the bus 330. It should be understood that although Figure 9 Not shown, other hardware and / or software modules may be used in conjunction with the electronic device 300, including but not limited to microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0069] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the exemplary embodiments described in the present invention can be implemented by software or by combining software with necessary hardware. Therefore, the technical solution according to the embodiment of the present invention can be embodied in the form of a software product, which can be stored in a computer-readable storage medium (which can be a CD-ROM, USB flash drive, mobile hard disk, etc.) or on a network, and includes a number of instructions to enable a computing device (which can be a personal computer, server, or network device, etc.) to execute the above method according to the present invention. When the computer program is executed by a data processing device, the computer-readable medium is enabled to implement the above method of the present invention, that is: Figure 1 The method shown.

[0070] Figure 10 A schematic diagram of a computer-readable medium provided in accordance with an embodiment of this specification.

[0071] accomplish Figure 1 The computer program of the illustrated method can be stored on one or more computer-readable media. The computer-readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or component, or any combination thereof. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0072] The computer-readable storage medium may include a data signal propagated in baseband or as part of a carrier wave, wherein the readable program code is carried. The data signal propagated may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The readable storage medium may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, device, or component. The program code contained on the readable storage medium may be transmitted using any suitable medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination thereof.

[0073] The program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages such as Java, C++, and the like, as well as conventional procedural programming languages such as "C" or similar programming languages. The program code may be executed entirely on the viewer computing device, partially on the viewer device, as a stand-alone software package, partially on the viewer computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the viewer computing device via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0074] In summary, the present invention can be implemented in hardware, or as a software module running on one or more processors, or a combination thereof. Those skilled in the art will appreciate that, in practice, general-purpose data processing devices such as microprocessors or digital signal processors (DSPs) can be used to implement some or all of the functions of some or all of the components according to the embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program or computer program product) for performing part or all of the methods described herein. Such a program implementing the present invention can be stored on a computer-readable medium or in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0075] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the present invention is not inherently related to any specific computer, virtual device, or electronic device, and various general-purpose devices can also implement the present invention. The above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

[0076] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0077] The foregoing is merely an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should all be included within the scope of the claims of the present application.

Claims

1. A method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply in a building, characterized in that: include: Obtain the pressure value at the highest end and the pressure value at the farthest end of the second highest end; Determine whether the highest end pressure value or the second highest end pressure value satisfies a preset condition; When the highest end pressure value or the second highest end pressure value satisfies the preset condition, the highest end pressure value and the second highest end pressure value are compared and the smaller value is selected as the most unfavorable control point; By regulating the pump group, the terminal pressure of the most unfavorable control point is controlled within a preset threshold value, thereby achieving pressure stabilization and energy-saving control at the terminal of the building's pressurized water supply.

2. The method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply for a building according to claim 1, characterized in that: Also includes: Get the water outlet pressure value after the pump; When the highest terminal pressure value or the second highest farthest terminal pressure value does not meet the preset conditions, the pump group is regulated based on the water outlet pressure value after the pump to achieve pressure stabilization and energy-saving control of the building pressurized water supply terminal.

3. The method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply for a building according to claim 2, characterized in that: The preset threshold value is 0.1MPa~0.15MPa.

4. The method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply for a building according to claim 3, characterized in that: The method for determining the sensor installation point corresponding to the highest end pressure value and / or the second highest farthest end pressure value includes: Get building floor plans; Identifying locations of all terminal water points based on the building floor plan; Based on the locations of all the terminal water use points, respectively determine the horizontal pipe length from each terminal water use point location to the water supply riser; The Darcy friction coefficient is matched based on the pipe type, and the pressure loss value of each end water point is determined based on the horizontal pipe length from the end water point to the water supply riser. The end water point position corresponding to the maximum pressure loss value is used as the sensor installation point.

5. The method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply for a building according to claim 4, characterized in that: The method of controlling the terminal pressure of the most unfavorable control point to a preset threshold by regulating the pump group to achieve pressure stabilization and energy saving control at the terminal of the building pressurized water supply includes: When the terminal pressure of the most unfavorable control point is lower than the preset threshold, the operating frequency of the pump group is increased and / or the number of water pumps in the pump group is increased.

6. The method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply for a building according to claim 5, characterized in that: The method of controlling the terminal pressure of the most unfavorable control point to a preset threshold value by regulating the pump group to achieve pressure stabilization and energy saving control at the terminal of the pressurized water supply of the building, further comprising: When the terminal pressure of the most unfavorable control point is higher than the preset threshold, the operating frequency of the pump group is reduced and / or the number of water pumps of the pump group is reduced or stopped.

7. The method for controlling pressure stabilization and energy saving at the terminal of pressurized water supply for a building according to claim 6, characterized in that: Also includes: When the terminal pressure of the most unfavorable control point is higher than and / or lower than the preset threshold value and exceeds a preset time, the sound and light alarm is triggered.

8. A pressure stabilizing and energy-saving control device for a building pressurized water supply terminal, characterized in that: include: An acquisition module is used to obtain the pressure value of the highest end and the pressure value of the farthest end at the second highest point; A judgment module, configured to judge whether the pressure value at the highest end or the pressure value at the farthest end of the second highest end meets a preset condition; a comparison module, configured to compare the highest end pressure value with the second highest end pressure value when the highest end pressure value or the second highest end pressure value satisfies the preset condition, and select the smaller value as the most unfavorable control point; The control module is used to control the terminal pressure of the most unfavorable control point within a preset threshold by regulating the pump group, thereby achieving pressure stabilization and energy-saving control at the terminal of the building's pressurized water supply.

9. An electronic device, wherein: The electronic device includes: A processor; and a memory storing computer-executable instructions, which, when executed, cause the processor to perform the method according to any one of claims 1 to 7.

10. A computer-readable storage medium, wherein: The computer-readable storage medium stores one or more programs, and when the one or more programs are executed by a processor, the method of any one of claims 1 to 7 is implemented.

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