Pressurizing water supply system with low-arranged water tank matched with high-arranged regulation and storage bag type air pressure water tank in overlying mode

Abstract

A pressurizing water supply system with a low-arranged water tank matched with a high-arranged regulation and storage bag type air pressure water tank in an overlying mode comprises a municipal pipe network, the water tank, a variable frequency pump set, a water supplementing main pipe, the bag type air pressure water tank, a pressurizing 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 pressure sensor, 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, the low water tank is matched with the high air pressure water tank to replace a high water tank matched with the low water tank, so that the requirement on building load is lower; compared with a low air pressure water tank which is arranged at the water outlet end of the water supply pump set and used for preventing a water hammer, the high air pressure water tank has the advantages that the utilization volume coefficient is larger, and the internal pressure is smaller; the low water tank is matched with the high air pressure water tank to regulate, store and supply water for a user pipe network, so that the impact on a municipal water supply pipe network in a water peak period is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of secondary water supply, especially low water tank storage water supply device. BACKGROUND

[0002] Low and high water tank combined water supply is a common water supply form, which features common water storage in low and high water tanks during water valley period to cope with insufficient municipal pipe network water supply flow for a long time, and then gravity flow of high water tank for user pipe network water supply. This water supply form reduces the impact on municipal pipe network during water peak period due to its storage water supply, and realizes long-time water supply under power grid outage due to gravity flow to user pipe network.

[0003] However, low and high water tank combined storage water supply cannot realize pressure boosting water supply due to gravity flow to user pipe network, and cannot meet the needs of many water scenes, including:

[0004] First, it cannot meet the needs of high-rise or long-distance water supply: even if there is a high storage water tank, when the building is high or the water supply distance is long, water flowing in the pipeline will generate resistance and local resistance, resulting in pressure loss. Only gravity water supply of high storage water tank may not meet the water pressure requirements of the most unfavorable point.

[0005] Second, it cannot cope with pressure shortage during water peak period: during water peak period, water consumption will increase significantly, and the water output of high storage water tank may not meet the needs of all users, resulting in a decrease in pipe network pressure. Gravity flow water supply of high storage tank may result in 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 pressure boosting pump is used to boost the pressure of high storage water supply, the power consumption will increase accordingly, and the noise of the pressure boosting pump will have an adverse effect on adjacent rooms.

[0008] At the same time, high water tanks have high requirements for building top load, and the use of high water tanks increases the design and construction difficulty and increases the cost. UTILITY MODEL CONTENTS

[0009] To overcome the above-mentioned defects, the utility model aims to provide a low water tank pressure boosting water supply system combined with high storage tank and pressure boosting water tank, which comprises: a municipal pipe network, a water tank, a frequency conversion pump group, a water supplementing main pipe, a bladder pressure water tank, a pressure boosting water supply main pipe, and a user pipe network.

[0010] The water tank, including the communication pipeline, water tank inlet pipeline, water tank outlet pipeline and the water tank inside the float ball valve, liquid level meter;

[0011] The municipal pipe network is connected with the front end of the communication pipeline;

[0012] The water inlet end of the water tank inlet pipeline is connected with the front section of the communication pipeline;

[0013] The water outlet end of the water tank inlet pipeline is connected with the float ball valve;

[0014] The middle section of the communication pipeline is sequentially provided with a pressure sensor and an electric valve along the water flow direction;

[0015] The water tank outlet pipeline is provided with a check valve;

[0016] The water outlet end of the water tank outlet pipeline is connected with the rear section of the communication pipeline;

[0017] The variable frequency pump group includes one or more than one main pump and auxiliary pump;

[0018] The rear end of the communication pipeline is connected with the variable frequency pump group;

[0019] The variable frequency pump group is connected with the water replenishing main pipe;

[0020] The variable frequency pump group can fully utilize the excess water head of the municipal pipe network for pressure supply. When potential risk of negative pressure of the municipal pipe network is generated due to small flow of the municipal pipe network, the electric valve in the communication pipeline can reduce the opening until the valve is closed to reduce the flow of the municipal pipe network to avoid the generation of negative pressure. The insufficient flow is provided by the water tank.

[0021] The bladder type air pressure water tank includes a water replenishing branch pipe, a pressure boosting water supply branch pipe, a water discharge pipe, a gas inlet, and a security device;

[0022] The water inlet end of the water replenishing branch pipe is connected with the water replenishing main pipe, and the water outlet end is connected with the water inlet end of the bladder type air pressure water tank. The water replenishing branch pipe is sequentially provided with the electric valve and the check valve along the water flow direction;

[0023] The water inlet end of the pressure boosting water supply branch pipe is connected with the water outlet end of the bladder type air pressure water tank. The water discharge pipe is connected with the front section of the pressure boosting water supply branch pipe. The rear section of the pressure boosting water supply branch pipe is sequentially provided with an electric valve and a check valve along the water flow direction. The water outlet end of the pressure boosting water supply branch pipe is connected with the water inlet end of the pressure boosting water supply main pipe;

[0024] The rear section of the pressure boosting water supply main pipe is sequentially provided with the pressure sensor, the upper limit pressure switch, and the ultraviolet lamp along the water flow direction. The water outlet end of the pressure boosting water supply main pipe is connected with the water inlet end of the user pipe network;

[0025] The set pressure value of the upper limit pressure switch triggers is the upper limit value of the pressure that the user pipe network can withstand.

[0026] During the operation of the system, the frequency conversion pump group starts to supply water to the air pressure tank through the water supply main pipe and the water supply branch pipe; at the same time, the air pressure tank supplies water to the user pipe network through the water supply branch pipe and the water supply main pipe; during this period, the frequency conversion pump group operates at a variable frequency to ensure that the pressure sensor of the water supply main pipe maintains the lower limit value of the user pipe network pressure and does not change with the fluctuation of the user pipe network water consumption;

[0027] As the user pipe network water consumption decreases, the frequency conversion pump group gradually reduces the output power until it reaches the minimum efficient operation power of the auxiliary pump; the frequency conversion pump group increases the output power to charge the bladder air pressure tank until the water pressure of the water supply main pipe reaches the set value of the upper limit pressure switch; the frequency conversion pump group stops operating, and the bladder air pressure tank continues to supply water to the user pipe network. At this time, the water supply pressure is gradually reduced. Since this process is during the water consumption valley of the user pipe network, the reduction of the water supply pressure to the lower limit value of the user pipe network pressure is a long and slow process, which avoids the frequent start and close of the frequency conversion pump group and saves energy consumption; when the monitoring value of the pressure sensor of the water supply main pipe reaches the lower limit value of the user pipe network pressure, the frequency conversion pump group starts to repeat the previous step.

[0028] When the upper limit pressure switch reaches the set value, the monitoring pressure value of the tank pressure sensor in the bladder air pressure tank is checked. When the monitoring pressure value of the bladder air pressure tank deviates greatly from the set value of the upper limit pressure switch, it may be that the bladder air pressure tank leaks, the bladder is damaged, etc. The bladder air pressure tank is closed, the closing mode is that the two electric valves on the water supply branch pipe and the water supply branch pipe of the bladder air pressure tank are closed, and the frequency conversion pump group is closed, waiting for repair.

[0029] The water immersion sensor of the bladder air pressure tank monitors in real time during the operation of the system. When the water immersion sensor finds water immersion, the corresponding bladder air pressure tank has a problem, and the bladder air pressure tank is closed. The operation mode is the same as the previous step.

[0030] An alternative solution to whether the bladder air pressure tank is damaged, the security device is replaced by a flow meter, which is located between the water supply branch pipe and the electric valve of the drain pipe.

[0031] The on-line pressure switch reaches the re-operation of the water supply pump set for a monitoring period, in which period, the water supply of the user pipe network is completed by the contraction of the capsule to extrude the water in the capsule, according to Boyle-Mariotte law, the water output in the capsule type air pressure water tank in the monitoring period should be a fixed value. Therefore, in a monitoring period, the flow meter of the capsule type air pressure water tank monitors the water output of the capsule type air pressure water tank, when the monitoring value deviates greatly from the fixed value, it means that the capsule type air pressure water tank has a problem, then the capsule type air pressure water tank is closed, and the frequency conversion pump set is closed, waiting for repair.

[0032] The utility model has the advantages and positive effects that: low water tank is matched with high air pressure water tank to replace low water tank matched with high water tank, and the requirement for building load is smaller; the high air pressure water tank is larger in volume coefficient and smaller in internal pressure than the low air pressure water tank arranged at the water outlet end of the water supply pump set for preventing water hammer; the low water tank matched with the high air pressure water tank is used for regulating and storing water supply for the user pipe network, and the impact on the municipal water supply pipe network during the water use peak period is reduced; the air pressure in the air pressure water tank is used for extruding and increasing gravity to realize gravity flow for the user pipe network, which meets the needs of many user pipe networks for pressure boosting water supply, avoids the increase of noise and power consumption caused by the pressure boosting pump, and realizes constant pressure water supply by using the monitoring value of the pressure sensor on the water supply main pipe in the high efficiency area of the water supply pump set; the water supply of the low efficiency area of the water supply pump set is controlled by the pressure switch for the water supply operation of the frequency conversion pump set, the linkage control logic is simple, and the frequency conversion pump set is prevented from frequently starting and stopping; a plurality of monitoring modes for monitoring whether the capsule type air pressure water tank is damaged are arranged, and the adverse effects of the leakage of the roof air pressure water tank on the building are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0033] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0034] Figure 1 It is a schematic view of the low water tank pressure stacking high storage capsule type air pressure water tank pressure boosting water supply system of the utility model;

[0035] Figure 2 It is another schematic view of the low water tank pressure stacking high storage capsule type air pressure water tank pressure boosting water supply system of the utility model;

[0036] In the figure, municipal pipe network-1, water tank-2, communication pipeline-21, ball valve-22, liquid level meter-23, water tank inlet pipeline-24, water tank outlet pipeline-25, frequency conversion pump group-3, main pump-31, auxiliary pump-32, water supplement main pipe-4, bladder type air pressure water tank-5, water supplement branch pipe-51, pressurized water supply branch pipe-52, drain pipe-53, air inlet-54, security device-55, tank pressure sensor-551, bottom plate-552, water immersion sensor-553, flow meter-554, pressurized water supply main pipe-6, lower limit pressure switch-61, upper limit pressure switch-62, ultraviolet lamp-63, user pipe network-7, pressure sensor-a, the check valve-b, electric valve-c. DETAILED DESCRIPTION

[0037] The utility model will be described in more detail below with reference to the drawings, in which the preferred embodiments of the utility model are shown, and it should be understood that the utility model described herein can be modified by those skilled in the art while still achieving the advantageous effects of the utility model. Therefore, the following description should be understood as extensive knowledge for those skilled in the art, and not as a limitation on the utility model.

[0038] As Figure 1 shown in the figure, embodiment 1:

[0039] A low water tank superimposed pressure cooperation high-set regulating and storing bladder type air pressure water tank pressurized water supply system, comprising: municipal pipe network 1, water tank 2, frequency conversion pump group 3, water supplement main pipe 4, bladder type air pressure water tank 5, pressurized water supply main pipe 6, user pipe network 7;

[0040] Water tank 2, comprising communication pipeline 21, water tank inlet pipeline 24, water tank outlet pipeline 25 located outside the water tank and ball valve 22, liquid level meter 23 in the water tank;

[0041] Municipal pipe network 1 is connected with the front end of communication pipeline 21;

[0042] Water tank inlet pipeline 24 inlet end is connected with the front section of communication pipeline 21;

[0043] Water tank inlet pipeline 24 outlet end is connected with ball valve 22;

[0044] The middle section of communication pipeline 21 is provided with pressure sensor a and electric valve c in turn along the direction of water flow;

[0045] Water tank outlet pipeline 25 is provided with check valve b;

[0046] Water tank outlet pipeline 25 outlet end is connected with the rear section of communication pipeline 21;

[0047] Frequency conversion pump group 3, comprising more than one main pump 31 and auxiliary pump 32;

[0048] The rear end of the communication pipeline 21 is connected with the variable frequency pump set 3.

[0049] The variable frequency pump set 3 is connected with the water supplement main pipeline 4.

[0050] The capsule air pressure water tank 5 comprises a water supplement branch pipeline 51, a pressurized water supply branch pipeline 52, a water discharge pipeline 53, a gas supplement opening 54 and a security device 55.

[0051] The water supplement branch pipeline 51 is connected with the water supplement main pipeline 4 at the water inlet end and connected with the water outlet end of the capsule air pressure water tank 5, and the water supplement branch pipeline is sequentially provided with an electric valve c and a check valve b along the water flow direction.

[0052] The pressurized water supply branch pipeline 52 is connected with the water outlet end of the capsule air pressure water tank 5 at the water inlet end, and the water discharge pipeline 53 is connected with the front section of the pressurized water supply branch pipeline, and the rear section of the pressurized water supply branch pipeline is sequentially provided with an electric valve c and a check valve b along the water flow direction, and the water outlet end of the pressurized water supply branch pipeline is connected with the water inlet end of the pressurized water supply main pipeline 6.

[0053] The pressurized water supply main pipeline 6 is sequentially provided with a pressure sensor a, an upper limit pressure switch 62 and an ultraviolet lamp 63 along the water flow direction, and the water outlet end of the pressurized water supply main pipeline is connected with the water inlet end of the user pipeline network 7.

[0054] The security device 55 comprises a tank body pressure sensor 551 located on the outer wall of the capsule air pressure water tank 5 and on the side of the air chamber, a bottom plate 552 located at the lower part of the capsule air pressure water tank 5 and a water immersion sensor 553 attached to the bottom plate.

[0055] As shown in Figure 2 Embodiment 2:

[0056] A low water tank superposition pressure matching high setting regulation and storage capsule air pressure water tank pressurized water supply system, which is basically the same as the structure of embodiment 1, and the difference lies in that the security device 55 in embodiment 1 is replaced by a flow meter 554, which is located on the pressurized water supply branch pipeline 52, between the water discharge pipeline 53 and the electric valve c.

[0057] The above has been described in detail through embodiments, but the content is only the preferred embodiment of the utility model, and cannot be considered as limiting the implementation range of the utility model. Any equivalent change and improvement made according to the application range of the utility model should still belong to the patent coverage range of the utility model.

Claims

1. A low-set water tank pressure-increasing water supply system that is fitted with a high-set pressure-regulating bladder-type air pressure water tank, characterized by, The utility model relates to a kind of low-set water tank superimposed pressure cooperation high-set regulating and storing bladder type air pressure water tank pressurized water supply system, including: Municipal pipeline network (1), water tank (2), variable frequency pump set (3), water supplementing main pipe (4), bladder type air pressure water tank (5), pressurized water supply main pipe (6), user pipeline network (7); The water tank (2) includes a communication pipeline (21) located outside the water tank, a water tank inlet pipeline (24), a water tank outlet pipeline (25), a float ball valve (22) and a liquid level gauge (23) inside the water tank; The municipal pipeline network (1) is connected to the front end of the communication pipeline (21); The water inlet end of the water tank inlet pipeline (24) is connected to the front section of the communication pipeline (21); The water outlet end of the water tank inlet pipeline (24) is connected to the float ball valve (22); The middle section of the communication pipeline (21) is sequentially provided with a pressure sensor (a) and an electric valve (c) along the water flow direction; The water tank outlet pipeline (25) is provided with a check valve (b); The water outlet end of the water tank outlet pipeline (25) is connected to the rear section of the communication pipeline (21); The variable frequency pump set (3) includes one or more than one main pump (31) and auxiliary pump (32) connected in parallel; The rear end of the communication pipeline (21) is connected to the variable frequency pump set (3); The variable frequency pump set (3) is connected to the water supplementing main pipe (4); The bladder type air pressure water tank (5) includes a water supplementing branch pipe (51), a pressurized water supply branch pipe (52), a water discharge pipe (53), an air inlet (54), and a security device (55); The water inlet end of the water supplementing branch pipe (51) is connected to the water supplementing main pipe (4), and the water outlet end is connected to the water inlet end of the bladder type air pressure water tank (5). The water supplementing branch pipe is sequentially provided with the electric valve (c) and the check valve (b) along the water flow direction; The water inlet end of the pressurized water supply branch pipe (52) is connected to the water outlet end of the bladder type air pressure water tank (5). The water discharge 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 sequentially provided with the electric valve (c) and the check valve (b) along the water flow direction. The water outlet end of the pressurized water supply branch pipe is connected to the water inlet end of the pressurized water supply main pipe (6); The rear section of the pressurized water supply main pipe (6) is sequentially provided with the pressure sensor (a), an upper limit pressure switch (62), and an ultraviolet lamp (63) along the water flow direction. The water outlet end of the pressurized water supply main pipe is connected to the water inlet end of the user pipeline network (7); The security device (55) includes a tank pressure sensor (551) located on the outer wall of the bladder type air pressure water tank (5) and on one side of the air chamber, a bottom plate (552) at the lower part of the bladder type air pressure water tank (5), and a water immersion sensor (553) attached to the bottom plate.

2. The low-set water tank superimposed pressure cooperation high-set regulating and storing bladder type air pressure water tank pressurized water supply system according to claim 1, wherein The security device (55) is replaced by a flowmeter (554) located between the electric valve (c) and the water discharge pipe (53) of the pressurized water supply branch pipe (52).

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