A combined water supply system

Abstract

The utility model relates to building water supply engineering technical field discloses a kind of combined water supply system, comprising: two water supply pump houses;Water supply pipe, water supply pipe is annular, water supply pipe has two interval settings in water supply pipe water supply part, two water supply parts include the water inlet, first maintenance valve and water outlet along the same circumferential direction arrangement, the water outlet end of two water supply pump houses is respectively and two water supply parts water inlet one-to-one correspondence communication.The combined water supply system provided by the utility model can solve the problem of single-pump-house water supply system in the prior art, which has single-point failure risk, low reliability and cannot guarantee the continuity of water supply.

Description

Technical Field

[0001] This utility model relates to the field of building water supply engineering technology, and in particular to a combined water supply system. Background Technology

[0002] In modern building water supply and drainage engineering, the stability and reliability of the water supply system are of paramount importance. Traditional building water supply systems typically adopt a single-point centralized supply model, that is, setting up an independent water supply pump house and delivering water to various water points within the building through a branching pipe network.

[0003] However, this single-pump-station water supply model has inherent risks. The water supply system relies entirely on an independent pump station. Once the pump station is damaged, has a power outage, or needs to be shut down for maintenance, the water supply to the entire building will be forced to stop. Taking large aquariums as an example, they usually house a large number of marine animals and require a continuous supply of stable water quality and quantity to maintain their living environment. If the water supply system is interrupted, the water quality in the exhibit pool may deteriorate rapidly in a short period of time, threatening the survival of marine animals or even causing their death, thus resulting in huge economic losses. Utility Model Content

[0004] The purpose of this invention is to provide a combined water supply system that can solve the problems of single-point failure risk, low reliability, and inability to guarantee continuous water supply in existing single-pump-station water supply systems.

[0005] To achieve the above objectives, this utility model provides a combined water supply system, comprising:

[0006] Two water supply pumping stations;

[0007] The water supply pipe is ring-shaped and has two water supply sections spaced apart. Each water supply section includes an inlet, a first maintenance valve, and an outlet arranged along the same circumferential direction. The outlets of the two water supply pump rooms are respectively connected to the inlets of the two water supply sections.

[0008] Furthermore, the combined water supply system also includes a control component. The water supply pump house is equipped with a fully digital variable frequency pump set and a water storage tank. The inlet of the fully digital variable frequency pump set is connected to the water storage tank. The outlet of the fully digital variable frequency pump set is connected to the inlet in a one-to-one correspondence. An electric valve is connected between the fully digital variable frequency pump set and the inlet. The control component is electrically connected to the electric valve and the fully digital variable frequency pump set.

[0009] Furthermore, the fully digital variable frequency pump set includes a pressure tank and multiple variable frequency pump assemblies connected in parallel. The inlet end of the variable frequency pump assembly is connected to the water storage tank, and the outlet end of the variable frequency pump assembly is connected to the electric valve. The pressure tank is connected between the outlet end of the variable frequency pump assembly and the electric valve.

[0010] Furthermore, the variable frequency pump assembly includes a second maintenance valve, a variable frequency pump, a third maintenance valve, and a check valve that are connected in the direction of fluid flow, and the control assembly is electrically connected to the variable frequency pump, the second maintenance valve, and the third maintenance valve.

[0011] Furthermore, the variable frequency pump assembly also includes a first pressure gauge and a second pressure gauge. The first pressure gauge is disposed between the second maintenance valve and the variable frequency pump, and the second pressure gauge is disposed between the third maintenance valve and the variable frequency pump. The control component is electrically connected to the first pressure gauge and the second pressure gauge.

[0012] Furthermore, a third pressure gauge is provided between the outlet end of the fully digital variable frequency pump set and the electric valve, and the control component is electrically connected to the third pressure gauge.

[0013] Furthermore, an ultraviolet disinfection device is provided between the water storage tank and the fully digital variable frequency pump set.

[0014] Furthermore, the water supply pump house is equipped with at least two of the aforementioned water storage tanks.

[0015] Furthermore, one of the water supply pump houses is located near the water load center of the building, while the other is located in a safe location away from potential hazards.

[0016] Compared with the prior art, the combined water supply system of this utility model has the following advantages: It sets up two independent water supply pump stations and connects their outlets to different locations on a ring-shaped water supply pipe. When one pump station experiences equipment failure, power outage, or needs to be shut down for maintenance, the other pump station can take over and continue supplying water, ensuring the continuity of water supply. Furthermore, the two independent pump stations can operate alternately, balancing their operating time and avoiding fatigue damage caused by long-term operation of a single pump station, thus extending the service life of the entire system. The ring-shaped water supply pipe has pipeline redundancy characteristics. When a section of the ring-shaped water supply pipe is damaged and needs repair, it can be isolated by closing the valves of the two first maintenance valves, while the remaining section can still be supplied by one pump station, reducing the scope of the fault and ensuring the continuity of water supply. Attached Figure Description

[0017] Figure 1 This is an overall circuit diagram of the combined water supply system according to an embodiment of this utility model;

[0018] Figure 2 This is a structural circuit diagram of the all-digital variable frequency pump set of the combined water supply system according to an embodiment of this utility model;

[0019] In the diagram, 1. Water supply pump house;

[0020] 2. Water supply pipe; 21. Water supply unit; 211. Inlet; 212. First maintenance valve; 213. Outlet;

[0021] 3. Control components;

[0022] 4. Fully digital variable frequency pump unit; 41. Pressure tank; 42. Variable frequency pump assembly; 421. Second maintenance valve; 422. Variable frequency pump; 423. Third maintenance valve; 424. Check valve; 425. First pressure gauge; 426. Second pressure gauge;

[0023] 5. Water storage tank;

[0024] 6. Electric valve;

[0025] 7. Third pressure gauge;

[0026] 8. Ultraviolet disinfection equipment. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] In this description of the utility model, the terms "upper," "lower," "left," "right," "front," "rear," "inner," "outer," "lateral," and "longitudinal," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the utility model and for simplifying the description, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model. Those skilled in the art can understand the specific meaning of these terms in this utility model according to the specific circumstances.

[0029] In this description of the utility model, the terms "provided with," "set up," "connected," and "placed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0031] The technical solution of this utility model will be further described below with reference to the embodiments and accompanying drawings.

[0032] like Figure 1-2 As shown, a combined water supply system according to an embodiment of the present invention includes:

[0033] Two water supply pumping stations 1;

[0034] Water supply pipe 2 is ring-shaped and has two water supply sections 21 spaced apart. The two water supply sections 21 include an inlet 211, a first maintenance valve 212 and an outlet 213 arranged along the same circumferential direction. The outlets of the two water supply pump rooms 1 are respectively connected to the inlets 211 of the two water supply sections 21.

[0035] Based on the above technical solution, under normal operating conditions, the combined water supply system can activate one of the water supply pump stations 1 as the main pump station. Its outlet end supplies water to the ring water supply pipe 2 through the corresponding inlet 211. The water flow can reach all the outlets 213 on the water supply pipe 2 through the loop. The other water supply pump station 1 is in standby mode. When the main water supply pump station 1 stops operating for any reason, the standby water supply pump station 1 can be started immediately and supply water to the ring water supply pipe 2 through the corresponding inlet 211 through its outlet end, thereby taking over the water supply and ensuring the continuity of water supply. The first maintenance valve 212 installed in the water supply section 21 can close the first maintenance valve 212 in both water supply sections 21 when a section of the ring water supply pipe 2 is damaged and needs repair, isolating the damaged section. During this period, the other water supply pump station 1 can still continue to supply water through the rest of the water supply pipe 2, realizing that maintenance work and normal system operation do not interfere with each other, improving the maintainability and operational stability of the system.

[0036] Preferably, the combined water supply system also includes a control component 3. The water supply pump room 1 is equipped with a fully digital variable frequency pump set 4 and a water storage tank 5. The inlet end of the fully digital variable frequency pump set 4 is connected to the water storage tank 5. The outlet end of the fully digital variable frequency pump set 4 is connected to the inlet 211 in a one-to-one correspondence. An electric valve 6 is connected between the fully digital variable frequency pump set 4 and the inlet 211. The control component 3 is electrically connected to the electric valve 6 and the fully digital variable frequency pump set 4.

[0037] The control component 3 is electrically connected to the fully digital variable frequency pump sets 4 and electric valves 6 in the two pump rooms, enabling automated operations such as main / standby switching, fault switching, and collaborative work between the water supply pump rooms 1 without manual intervention. Its rapid response and smooth switching improve the intelligence level of the combined water supply system and its efficiency in responding to emergencies. By replacing the traditional pump sets with fully digital variable frequency pump sets 4, the control component 3 can precisely adjust the motor speed of the variable frequency pump sets 422 based on the real-time pressure feedback from the water supply pipe 2, ensuring that its output flow accurately meets actual water demand. When water consumption is low, the pump sets operate at low speed; when water consumption is high, the pump sets operate at high speed, supplying water on demand and avoiding energy waste, thus ensuring energy-saving effects.

[0038] More preferably, the all-digital variable frequency pump set 4 includes a pressure tank 41 and multiple variable frequency pump assemblies 42 arranged in parallel. The inlet end of the variable frequency pump assembly 42 is connected to the water storage tank 5, and the outlet end of the variable frequency pump assembly 42 is connected to the electric valve 6. The pressure tank 41 is connected between the outlet end of the variable frequency pump assembly 42 and the electric valve 6.

[0039] Control component 3 controls multiple parallel variable frequency pump assemblies 42. It can decide to activate one or more variable frequency pump assemblies 42 based on actual water consumption changes, and perform variable frequency speed regulation on the operating variable frequency pumps 422. This ensures that each operating variable frequency pump 422 is as close as possible to the actual working requirements, guaranteeing stable output while maximizing energy savings. A pressure tank 41 is installed. When the variable frequency pump assembly 42 starts and stops, the water flow speed and pressure change. The pressure tank 41 structurally acts as a hydraulic damper or shock absorber. During startup, it absorbs the instantaneous pressure overshoot, preventing excessive pressure. During shutdown, it replenishes a small amount of water to the water supply pipe 2, buffering the sudden pressure drop caused by the loss of water flow inertia. This buffering effect ensures a smooth transition of pressure within the water supply pipe 2, whether switching the internal operating state of the variable frequency pump assembly 42 or switching between the two water supply pump stations 1, avoiding large pressure fluctuations and improving the stability of water supply to the user.

[0040] More preferably, the variable frequency pump assembly 42 includes a second maintenance valve 421, a variable frequency pump 422, a third maintenance valve 423, and a check valve 424 that are connected in the direction of fluid flow, and the control assembly 3 is electrically connected to the variable frequency pump 422, the second maintenance valve 421, and the third maintenance valve 423.

[0041] The variable frequency pump 422 is positioned between the second maintenance valve 421 and the third maintenance valve 423 to form a complete isolation unit. When a variable frequency pump 422 needs to be repaired or replaced, the maintenance personnel only need to close its corresponding second maintenance valve 421 and third maintenance valve 423 to disconnect the variable frequency pump 422 from the entire variable frequency pump assembly 42 without affecting the normal operation of other parallel variable frequency pumps 422. Maintenance work can be carried out without interrupting the water supply of the entire water supply pump room 1, which improves the maintainability of the combined water supply system.

[0042] More preferably, the variable frequency pump assembly 42 further includes a first pressure gauge 425 and a second pressure gauge 426. The first pressure gauge 425 is disposed between the second maintenance valve 421 and the variable frequency pump 422, and the second pressure gauge 426 is disposed between the third maintenance valve 423 and the variable frequency pump 422. The control assembly 3 is electrically connected to the first pressure gauge 425 and the second pressure gauge 426.

[0043] The first pressure gauge 425 and the second pressure gauge 426 can simultaneously obtain the pressure of water before entering the variable frequency pump 422 and the pressure after leaving the variable frequency pump 422. The reading of the first pressure gauge 425 directly reflects the operating conditions upstream of the pump. Abnormal readings (such as being too low) are direct indications of upstream problems such as blockage in the inlet pipe or insufficient water level in the water storage tank 5. The reading of the second pressure gauge 426 reflects the pump's own working capacity and the resistance characteristics of the downstream water supply pipe 2. By comparing the readings of the two pressure gauges, it is possible to clearly distinguish whether the fault originates upstream of the variable frequency pump 422 (the water supply side), the variable frequency pump 422 itself, or downstream of the variable frequency pump 422 (the water supply pipe 2 side), providing direction for fault diagnosis.

[0044] More preferably, a third pressure gauge 7 is provided between the outlet end of the fully digital variable frequency pump unit 4 and the electric valve 6, and the control component 3 is electrically connected to the third pressure gauge 7.

[0045] The reading of the third pressure gauge 7 reflects the actual water supply pressure formed at the inlet 211 of the water supply pipe 2 after the all-digital variable frequency pump set 4. Its stability directly represents the working quality of the entire water supply pump station 1. Moreover, since the second pressure gauge 426 and the third pressure gauge 7 are located close to each other, they form a data cross-validation structure. Under normal operating conditions, due to the short pipeline and small pressure drop between them, the reading of the third pressure gauge 7 should be basically the same as the reading of the second pressure gauge 426 of all the operating variable frequency pumps 422. When a problem occurs in a single pump: if the reading of a certain second pressure gauge 426 is much lower than the readings of other pumps and the reading of the third pressure gauge 7, the problem can be accurately determined to be in the variable frequency pump 422 itself or in the valve downstream of it. When a problem occurs in the manifold: if the readings of the second pressure gauges 426 of all the operating variable frequency pumps 422 are normal and consistent, but the reading of the third pressure gauge 7 is low, the problem can be located in the manifold after the outlet of each variable frequency pump 422 and before the third pressure gauge 7.

[0046] More preferably, an ultraviolet disinfection device 8 is provided between the water storage tank 5 and the fully digital variable frequency pump set 4.

[0047] The disinfection process is set before the fully digital variable frequency pump set 4, which means that the water entering the variable frequency pump 422, pressure tank 41 and even the ring water supply pipe 2 is sterile. This can inhibit the formation of a biofilm layer on the inner wall of each component of the water supply system, avoid water quality contamination by the biofilm layer, reduce the risk of pipe corrosion, maintain low water flow resistance, protect the cleanliness of the entire downstream component from the source, extend the service life of the water supply pipe 2, and ensure the stability of water quality during long-distance transportation.

[0048] More preferably, the water supply pump house 1 is equipped with at least two water storage tanks 5.

[0049] More preferably, one water supply pump room 1 is located near the water load center of the building, while the other is located in a safe location away from potential hazards.

[0050] By placing the main or frequently used pump room in the water load center (i.e., the area with the largest and most concentrated water consumption in the building), the friction loss of water flow during transportation can be reduced. Only a smaller pressure pump is needed to meet the needs of users on each floor of the building, thereby reducing the daily power consumption and ensuring energy-saving effects. For certain specific buildings (such as aquariums on the coast), there are clear potential hazards (such as seawater backflow and flooding caused by typhoons and storm surges). Placing another water supply pump room 1 in a safe location that avoids these hazards ensures that when extreme disasters occur and the main pump room near the load center fails due to flooding or damage, the water supply pump room 1 in the safe zone will not be affected and can take over the water supply task, thus maintaining the continuity of the building's water supply.

[0051] In summary, this utility model embodiment provides a combined water supply system, which sets up two independent water supply pump stations 1 and connects their outlets to different locations on a ring-shaped water supply pipe 2. When one water supply pump station 1 experiences equipment failure, power outage, or needs to be shut down for maintenance, the other water supply pump station 1 can take over and continue supplying water, ensuring the continuity of water supply. Moreover, the two independent water supply pump stations 1 can operate alternately, balancing the usage time of the two water supply pump stations 1, avoiding fatigue damage caused by long-term operation of a single water supply pump station 1, and extending the service life of the entire system. The structure of the ring-shaped water supply pipe 2 has pipeline redundancy characteristics. When a section of the ring-shaped water supply pipe 2 is damaged and needs repair, it can be isolated by closing the valves of the two first maintenance valves 212, while the remaining part can still be supplied by one water supply pump station 1, reducing the scope of the failure and ensuring the continuity of water supply.

[0052] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A combined water supply system, characterized in that, include: Two water supply pumping stations (1); Water supply pipe (2), the water supply pipe (2) is ring-shaped, the water supply pipe (2) has two water supply parts (21) spaced apart from each other, the two water supply parts (21) include an inlet (211), a first maintenance valve (212) and an outlet (213) arranged along the same circumferential direction, and the outlet of the two water supply pump rooms (1) is respectively connected to the inlet (211) of the two water supply parts (21).

2. The combined water supply system according to claim 1, characterized in that, It also includes a control component (3). The water supply pump room (1) is equipped with a fully digital variable frequency pump set (4) and a water storage tank (5). The water inlet of the fully digital variable frequency pump set (4) is connected to the water storage tank (5). The water outlet of the fully digital variable frequency pump set (4) is connected to the water inlet (211) in a one-to-one correspondence. An electric valve (6) is connected between the fully digital variable frequency pump set (4) and the water inlet (211). The control component (3) is electrically connected to the electric valve (6) and the fully digital variable frequency pump set (4).

3. The combined water supply system according to claim 2, characterized in that, The fully digital variable frequency pump set (4) includes a pressure tank (41) and multiple variable frequency pump assemblies (42) arranged in parallel. The inlet end of the variable frequency pump assembly (42) is connected to the water storage tank (5), and the outlet end of the variable frequency pump assembly (42) is connected to the electric valve (6). The pressure tank (41) is connected between the outlet end of the variable frequency pump assembly (42) and the electric valve (6).

4. The combined water supply system according to claim 3, characterized in that, The variable frequency pump assembly (42) includes a second maintenance valve (421), a variable frequency pump (422), a third maintenance valve (423), and a check valve (424) arranged in a direction of fluid flow. The control assembly (3) is electrically connected to the variable frequency pump (422), the second maintenance valve (421), and the third maintenance valve (423).

5. The combined water supply system according to claim 4, characterized in that, The variable frequency pump assembly (42) further includes a first pressure gauge (425) and a second pressure gauge (426). The first pressure gauge (425) is disposed between the second maintenance valve (421) and the variable frequency pump (422), and the second pressure gauge (426) is disposed between the third maintenance valve (423) and the variable frequency pump (422). The control assembly (3) is electrically connected to the first pressure gauge (425) and the second pressure gauge (426).

6. The combined water supply system according to claim 2, characterized in that, A third pressure gauge (7) is provided between the outlet end of the fully digital variable frequency pump set (4) and the electric valve (6), and the control component (3) is electrically connected to the third pressure gauge (7).

7. The combined water supply system according to claim 2, characterized in that, An ultraviolet disinfection device (8) is provided between the water storage tank (5) and the fully digital variable frequency pump set (4).

8. The combined water supply system according to claim 2, characterized in that, The water supply pump room (1) is equipped with at least two of the aforementioned water storage tanks (5).

9. The combined water supply system according to claim 2, characterized in that, One of the water supply pump rooms (1) is located near the water load center of the building, while the other water supply pump room (1) is located in a safe location away from potential hazards.

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