Pipe network pressure-superposed cooperation and parallel connection high-level regulation and storage bag type air pressure water tank pressurization water supply system

Abstract

The utility model discloses a pipe network pressure-superposed matching and parallel connection high-level regulation and storage bag type air pressure water tank pressurization water supply system. The system comprises a municipal pipe network, a flow stabilization tank, a variable frequency pump set, a water supplementing main pipe, more than two bag type air pressure water tanks, a pressurization water supply main pipe and a user pipe network, a bag type air pressure water tank comprises a water supplementing branch pipe, a pressurizing water supply branch pipe, a water drainage pipe, an air supplementing opening and a security check device. A lower limit pressure switch, an upper limit pressure switch and an ultraviolet lamp are sequentially arranged on the rear section of the pressurizing water supply main pipe in the water flow direction. According to the utility model, a plurality of high bag type air pressure water tanks are used for regulating, storing and supplying water to a user pipe network, so that the impact on a municipal water supply pipe network in a water peak period is reduced; pressurized water supply is performed on a user pipe network by adopting an air pressure extrusion and gravity self-flowing form in the air pressure water tank, so that the requirement of multiple user pipe networks on pressurized water supply is met; the water replenishing operation of the variable-frequency pump set is controlled by the double-pressure switch, the linkage control logic is simple, and frequent starting and stopping of the variable-frequency pump set are avoided.

Description

Technical Field

[0001] This utility model relates to the field of secondary water supply, and in particular to a high-level regulating and storage water supply device. Background Technology

[0002] High-level storage water supply is a common form of water supply. Its characteristic is that water is stored at high levels during off-peak water usage periods and then supplied to user networks via gravity flow. This method reduces the impact on the municipal water supply network during peak usage periods due to its storage and regulation; simultaneously, its gravity-fed water supply to user networks allows for sustained water supply even during power outages.

[0003] However, due to its gravity-flow nature, elevated water storage systems cannot achieve pressurized water supply and therefore cannot meet the needs of many water usage scenarios, including:

[0004] First, it cannot meet the water supply needs of high-rise buildings or long distances: Even with elevated storage tanks, when the building is tall or the water supply distance is long, the water flow in the pipes will generate frictional resistance and local resistance, resulting in pressure loss. Relying solely on gravity water supply from elevated storage tanks may not be able to meet the water pressure requirements at the most unfavorable points;

[0005] Second, it cannot cope with insufficient pressure during peak water usage periods: During peak water usage periods, water consumption increases significantly, and the output of the elevated storage tank may not be able to meet the needs of all users, resulting in a drop in pipeline pressure. Relying solely on the gravity flow of the elevated storage tank for water supply may lead to insufficient water pressure.

[0006] Third, it cannot guarantee the water demand of special areas: such as commercial water areas with special water pressure requirements.

[0007] If a booster pump is used to pressurize the elevated water storage supply, the power consumption will increase accordingly, and the noise of the booster pump will have an adverse effect on nearby rooms. Utility Model Content

[0008] To overcome the above-mentioned defects, the purpose of this utility model is to propose a pressurized water supply system with overlapping pipeline and high-positioned regulating bladder-type air pressure tank, including: municipal pipeline, flow stabilizing tank, variable frequency pump set, water supply main pipe, two or more bladder-type air pressure tanks, pressurized water supply main pipe, and user pipeline.

[0009] The municipal pipeline network, the flow stabilizing tank, the variable frequency pump set, and the water supply main are connected in sequence.

[0010] A pressure sensor is installed at the connection between the municipal pipeline and the flow stabilizing tank;

[0011] The bladder-type pressure water tank includes a water supply branch pipe, a pressurized water supply branch pipe, a drain pipe, an air supply port, and a safety inspection device;

[0012] The water supply branch pipe has an inlet end connected to the water supply main pipe and an outlet end connected to the inlet end of the bladder-type pressure water tank. The water supply branch pipe is equipped with an electric valve and a check valve in sequence along the water flow direction.

[0013] The pressurized water supply branch pipe has its inlet end connected to the outlet end of the bladder-type air pressure water tank, and the drain pipe connected to the front section of the pressurized water supply branch pipe. The rear section of the pressurized water supply branch pipe is sequentially equipped with the electric valve and the check valve along the water flow direction. The outlet end of the pressurized water supply branch pipe is connected to the pressurized water supply main pipe.

[0014] The booster water supply main pipe is equipped with a lower limit pressure switch, an upper limit pressure switch, and an ultraviolet lamp in sequence along the water flow direction in its rear section. The water outlet of the booster water supply main pipe is connected to the water inlet of the user's pipe network.

[0015] The security inspection device includes a tank pressure sensor located on the outer wall of the bladder-type pressure water tank and on one side of the air chamber, a chassis at the bottom of the bladder-type pressure water tank, and a water immersion sensor attached to the chassis.

[0016] The operation method of the pressurized water supply system with superimposed pressure and connected to a high-positioned regulating bladder-type pressure water tank is as follows:

[0017] Parameter settings:

[0018] Based on the minimum working pressure allowed by the municipal pipeline network, the minimum limit value of the inlet pressure of the flow stabilizing tank is Plimit, and the value monitored by the pressure sensor at the front end of the flow stabilizing tank is P1.

[0019] The lower limit pressure switch activation setting value is Pmin, based on the minimum allowable water supply pressure at the front end of the user's water supply network.

[0020] The upper limit pressure switch activation setting value is Pmax, based on the maximum allowable water supply pressure at the front end of the user's water supply network.

[0021] The pressure sensor in the tank monitors a value of P2, which should be approximately consistent with the pressure value at the end of the booster water supply main, with an allowable deviation of α%.

[0022] Operational Step 1: The bladder-type pressure water tank supplies water to the user's pipe network.

[0023] In two or more of the aforementioned bladder-type pressure water tanks, one of the bladder-type pressure water tanks serves as a redundant backup. The electric valves in the water supply branch pipe and the pressurized water supply branch pipe of this bladder-type pressure water tank are closed, while the electric valves in the water supply branch pipe and the pressurized water supply branch pipe of the non-redundant backup bladder-type pressure water tanks are opened.

[0024] The water in the non-redundant backup bladder-type pressure tank is released by the bladder and reaches the user's water supply network through the booster water supply branch pipe and the booster water supply main pipe, thereby realizing the booster water supply of the user's water supply network, and the pressure in the booster water supply main pipe is reduced.

[0025] Operation Step 2: The variable frequency pump set starts and replenishes water to the non-redundant backup bladder-type pressure tank.

[0026] When the pressure of the booster water supply main pipe decreases to Pmin, the lower limit pressure switch commands the variable frequency pump set to start, and water is supplied to the non-redundant backup bladder-type pressure tank through the water supply main pipe and the water supply branch pipe. As the output power of the variable frequency pump set increases, the monitored value of P1 decreases. The maximum allowable output power of the variable frequency pump set should ensure that P1 ≥ Plimit.

[0027] During the process of replenishing water to the non-redundant backup bladder-type pressure tank, the water in this part of the bladder-type pressure tank is still released by bladder compression, and reaches the user's pipe network through the booster water supply branch pipe and the booster water supply main pipe, accompanied by an increase in pressure in the booster water supply main pipe; when the pressure in the booster water supply main pipe increases to Pmax, the upper limit pressure switch commands the variable frequency pump set to stop, and repeats step 1.

[0028] Verification steps: Perform validity verification on the non-redundant backup of the bladder-type pressure tank.

[0029] At the two points when the lower limit pressure switch is activated or the upper limit pressure switch is activated, the validity of each non-redundant backup bladder-type pressure tank is verified. If the monitored values ​​of the tank pressure sensor in each non-redundant backup bladder-type pressure tank satisfy Pmin(1-α%)≤P2≤Pmin(1+α%) and Pmax(1-α%)≤P3≤Pmax(1+α%) respectively, the validity verification is qualified; otherwise, the validity verification is unqualified.

[0030] The water immersion sensor in each non-redundant backup bladder-type pressure tank is monitored in real time. When the water immersion sensor detects water immersion, the validity verification of the bladder-type pressure tank corresponding to the water immersion sensor fails.

[0031] For the bladder-type pressure water tank that fails the inspection, the electric valves in the water supply branch pipe and the booster water supply branch pipe are closed and awaiting repair. The redundant backup bladder-type pressure water tank is activated, that is, the electric valves in the water supply branch pipe and the booster water supply branch pipe of the redundant backup bladder-type pressure water tank are opened to replace the bladder-type pressure water tank awaiting repair, so as to achieve the purpose of stable system operation.

[0032] As an alternative, in a pressurized water supply system with overlapping pipelines and a high-mounted regulating bladder-type pressure tank, the safety inspection device is replaced by a flow meter, which is located on the pressurized water supply branch pipe, between the drain pipe and the electric valve.

[0033] The operation method of this pipeline superimposed pressure system and the high-positioned regulating bladder-type pressure water tank booster water supply system is characterized by the following features:

[0034] Parameter settings:

[0035] Based on the minimum permissible working pressure of the municipal pipeline network, the minimum limit for the inlet pressure of the flow stabilizing tank is P. limit The pressure sensor at the front end of the flow stabilizer tank monitors a value of P1.

[0036] The lower limit pressure switch activation setting value is Pmin, based on the minimum allowable water supply pressure at the front end of the user's water supply network.

[0037] The upper limit pressure switch activation setting value is Pmax, based on the maximum allowable water supply pressure at the front end of the user's water supply network.

[0038] The period from the activation of the upper limit pressure switch to the activation of the lower limit pressure switch constitutes one validity verification cycle. Within this cycle, the monitored flow rate of the flow meter is L1, the designed flow rate of water released from each bladder-type pressure tank is L2, and the allowable deviation is β%.

[0039] Operational Step 1: The bladder-type pressure water tank supplies water to the user's pipe network.

[0040] In two or more of the aforementioned bladder-type pressure water tanks, one of the bladder-type pressure water tanks serves as a redundant backup. The electric valves in the water supply branch pipe and the pressurized water supply branch pipe of this bladder-type pressure water tank are closed, while the electric valves in the water supply branch pipe and the pressurized water supply branch pipe of the non-redundant backup bladder-type pressure water tanks are opened.

[0041] The water in the non-redundant backup bladder-type pressure tank is released by the bladder and reaches the user's water supply network through the booster water supply branch pipe and the booster water supply main pipe, thereby realizing the booster water supply of the user's water supply network, and the pressure in the booster water supply main pipe is reduced.

[0042] Operation Step 2: The variable frequency pump set starts and replenishes water to the non-redundant backup bladder-type pressure tank.

[0043] When the pressure of the booster water supply main pipe decreases to Pmin, the lower limit pressure switch commands the variable frequency pump set to start, and water is supplied to the non-redundant backup bladder-type pressure tank through the water supply main pipe and the water supply branch pipe. As the output power of the variable frequency pump set increases, the monitored value of P1 decreases. The maximum allowable output power of the variable frequency pump set should ensure that P1 ≥ Plimit.

[0044] During the process of replenishing water to the non-redundant backup bladder-type pressure tank, the water in this part of the bladder-type pressure tank is still released by bladder compression, and reaches the user's pipe network through the booster water supply branch pipe and the booster water supply main pipe, accompanied by an increase in pressure in the booster water supply main pipe; when the pressure in the booster water supply main pipe increases to Pmax, the upper limit pressure switch commands the variable frequency pump set to stop, and repeats step 1.

[0045] Verification steps: Perform validity verification on the non-redundant backup of the bladder-type pressure tank.

[0046] Within a validity verification cycle, the flow rate released by each non-redundant backup bladder-type pressure tank is verified. When L2(1-β%)≤L1≤L2(1+β%), the validity verification is qualified; otherwise, the validity verification of the corresponding bladder-type pressure tank is unqualified.

[0047] For the bladder-type pressure water tank that fails the inspection, the electric valves in the water supply branch pipe and the booster water supply branch pipe are closed and awaiting repair. The redundant backup bladder-type pressure water tank is activated, that is, the electric valves in the water supply branch pipe and the booster water supply branch pipe of the redundant backup bladder-type pressure water tank are opened to replace the bladder-type pressure water tank awaiting repair, so as to achieve the purpose of stable system operation.

[0048] The advantages and positive effects of this utility model are as follows: Using two or more elevated pressure tanks instead of elevated water tanks provides a more sealed and reliable water storage solution compared to water tanks; elevated pressure tanks, compared to low-level pressure tanks located at the outlet of the water supply pump unit to prevent water hammer, have a larger volume coefficient and lower internal pressure; using multiple elevated bladder-type pressure tanks to regulate and supply water to the user's pipe network reduces the impact on the municipal water supply network during peak water usage periods; using a combination of air pressure compression and gravity flow within the pressure tanks to boost water pressure in the user's pipe network meets the needs of many user pipe networks requiring boosted water supply while avoiding the increased noise and power consumption caused by using booster pumps; dual pressure switches control the water replenishment operation of the variable frequency pump unit, resulting in a simple linkage control logic and avoiding frequent start-stop of the variable frequency pump unit; multiple methods are set up to monitor the damage of each bladder-type pressure tank individually, ensuring the safe and reliable operation of the system; the system has redundant bladder-type pressure tanks, maintaining the continuous and stable operation of the system. Attached Figure Description

[0049] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0050] Figure 1 This is a schematic diagram of the pipeline superposition and connection of the high-position regulating bladder-type pressure water tank pressurization water supply system of this utility model.

[0051] Figure 2 This is a schematic diagram of another pipeline superposition and connection to a high-position regulating bladder-type pressure water tank booster water supply system according to this utility model;

[0052] In the diagram, the components are: municipal pipeline - 1, flow stabilizing tank - 2, variable frequency pump set - 3, water supply main pipe - 4, bladder-type pressure water tank - 5, water supply branch pipe - 51, booster water supply branch pipe - 52, drain pipe - 53, air inlet - 54, safety inspection device - 55, tank pressure sensor - 551, chassis - 552, water immersion sensor - 553, flow meter - 554, booster water supply main pipe - 6, lower limit pressure switch - 61, upper limit pressure switch - 62, ultraviolet lamp - 63, user pipeline - 7, pressure sensor - a, check valve - b, and electric valve - c. Detailed Implementation

[0053] The present invention will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of the invention. It should be understood that those skilled in the art can modify the invention described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the invention.

[0054] like Figure 1 As shown, Example 1:

[0055] A pressurized water supply system with superimposed pipeline and connected to a high-positioned regulating bladder-type pressure tank includes: municipal pipeline 1, flow stabilizing tank 2, variable frequency pump set 3, water supply main pipe 4, two or more bladder-type pressure tanks 5, pressurized water supply main pipe 6, and user pipeline 7.

[0056] The municipal pipeline 1, flow stabilizing tank 2, variable frequency pump set 3, and water supply main 4 are connected in sequence;

[0057] Pressure sensor a is installed at the connection between municipal pipeline 1 and flow stabilizing tank 2;

[0058] The bladder-type pressure water tank 5 includes a water supply branch pipe 51, a pressurized water supply branch pipe 52, a drain pipe 53, an air supply port 54, and a safety inspection device 55.

[0059] The water supply branch pipe 51 has an inlet end connected to the water supply main pipe 4 and an outlet end connected to the inlet end of the bladder-type pressure water tank 5. The water supply branch pipe is equipped with an electric valve c and a check valve b in sequence along the water flow direction.

[0060] The booster water supply branch pipe 52 has its inlet end connected to the outlet end of the bladder-type air pressure tank 5, and its drain pipe 53 connected to the front section of the booster water supply branch pipe. The rear section of the booster water supply branch pipe is equipped with an electric valve c and a check valve b in sequence along the water flow direction. The outlet end of the booster water supply branch pipe is connected to the booster water supply main pipe 6.

[0061] The booster water supply main pipe 6 is equipped with a lower limit pressure switch 61, an upper limit pressure switch 62, and an ultraviolet lamp 63 in sequence along the water flow direction. The outlet end of the booster water supply main pipe is connected to the inlet end of the user's pipe network 7.

[0062] The security inspection device 55 includes a tank pressure sensor 551 located on the outer wall of the bladder-type pressure tank 5 and on one side of the air chamber, a chassis 552 at the bottom of the bladder-type pressure tank 5, and a water immersion sensor 553 attached to the chassis.

[0063] like Figure 2 As shown, Example 2:

[0064] As an alternative to the pipeline superposition and connection of the high-position regulating bladder-type air pressure water tank pressurization water supply system in Embodiment 1, the safety inspection device 55 is replaced by a flow meter 554, which is located on the pressurized water supply branch pipe 52, between the drain pipe 53 and the electric valve c.

[0065] The present invention has been described in detail above through embodiments, but the content is only a preferred embodiment of the present invention and should not be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made in accordance with the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A pressurized water supply system with overlapping pipelines and a high-mounted regulating bladder-type pressure tank, characterized in that, include: Municipal pipeline (1), flow stabilizing tank (2), variable frequency pump set (3), water supply main pipe (4), two or more bladder-type pressure tanks (5), booster water supply main pipe (6), user pipeline (7); The municipal pipeline (1), the flow stabilizing tank (2), the variable frequency pump set (3), and the water supply main pipe (4) are connected in sequence. A pressure sensor (a) is provided at the connection between the municipal pipeline (1) and the flow stabilizing tank (2); The bladder-type pressure water tank (5) includes a water supply branch pipe (51), a pressurized water supply branch pipe (52), a drain pipe (53), an air supply port (54), and a safety inspection device (55). The water supply branch pipe (51) has an inlet end connected to the water supply main pipe (4) and an outlet end connected to the inlet end of the bladder-type pressure water tank (5). The water supply branch pipe is equipped with an electric valve (c) and a check valve (b) in sequence along the water flow direction. The pressurized water supply branch pipe (52) has its inlet end connected to the outlet end of the bladder-type air pressure water tank (5), and the drain pipe (53) is connected to the front section of the pressurized water supply branch pipe. The rear section of the pressurized water supply branch pipe is provided with the electric valve (c) and the check valve (b) in sequence along the water flow direction. The outlet end of the pressurized water supply branch pipe is connected to the pressurized water supply main pipe (6). The booster water supply main pipe (6) is provided with a lower limit pressure switch (61), an upper limit pressure switch (62), and an ultraviolet lamp (63) in sequence along the water flow direction in the rear section. The water outlet of the booster water supply main pipe is connected to the water inlet of the user network (7). The security inspection device (55) includes a tank pressure sensor (551) located on the outer wall of the bladder-type pressure water tank (5) and on one side of the air chamber, a chassis (552) at the bottom of the bladder-type pressure water tank (5), and a water immersion sensor (553) attached to the chassis.

2. A pressurized water supply system with overlapping pipelines and a high-mounted regulating bladder-type pressure tank, characterized in that, include: Municipal pipeline (1), flow stabilizing tank (2), variable frequency pump set (3), water supply main pipe (4), two or more bladder-type pressure tanks (5), booster water supply main pipe (6), user pipeline (7); The municipal pipeline (1), the flow stabilizing tank (2), the variable frequency pump set (3), and the water supply main pipe (4) are connected in sequence. A pressure sensor (a) is provided at the connection between the municipal pipeline (1) and the flow stabilizing tank (2); The bladder-type pressure water tank (5) includes a water supply branch pipe (51), a pressurized water supply branch pipe (52), a drain pipe (53), an air supply port (54), and a safety inspection device (55). The water supply branch pipe (51) has an inlet end connected to the water supply main pipe (4) and an outlet end connected to the inlet end of the bladder-type pressure water tank (5). The water supply branch pipe is equipped with an electric valve (c) and a check valve (b) in sequence along the water flow direction. The pressurized water supply branch pipe (52) has its inlet end connected to the outlet end of the bladder-type air pressure water tank (5), and the drain pipe (53) is connected to the front section of the pressurized water supply branch pipe. The rear section of the pressurized water supply branch pipe is provided with the electric valve (c) and the check valve (b) in sequence along the water flow direction. The outlet end of the pressurized water supply branch pipe is connected to the pressurized water supply main pipe (6). The booster water supply main pipe (6) is provided with a lower limit pressure switch (61), an upper limit pressure switch (62), and an ultraviolet lamp (63) in sequence along the water flow direction in the rear section. The water outlet of the booster water supply main pipe is connected to the water inlet of the user network (7). The security inspection device (55) is a flow meter (554), which is located on the booster water supply branch pipe (52), between the drain pipe (53) and the electric valve (c).

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