Water storage adjusting device of water supply system and water supply system

Abstract

The utility model relates to a water storage adjusting device of a water supply system and the water supply system, belongs to the technical field of secondary water supply of buildings, and aims to solve the problem of how to improve the pressure stability in a water supply network. The scheme of the utility model mainly comprises a pressure reducing valve and a water storage regulator, the water storage regulator is arranged on the side, close to the water pump, relative to the pressure reducing valve. The water storage regulator comprises a water storage cavity, a first piston and a first spring, an opening of the water storage cavity is communicated with a water supply pipeline, the first spring and the first piston are arranged in the water storage cavity, and the first spring is configured to press the first piston to the opening.

Description

Technical Field

[0001] The utility model belongs to the technical field of secondary water supply for buildings, and in particular relates to a water storage regulating device for a water supply system and a water supply system. Background Art

[0002] In the current building water supply system, a combination of a variable frequency water supply pump group and a low-level water tank is usually used as the water supply end of the secondary water supply system. In order to reduce the frequent start-up of the water pump, a gas pressure regulating tank is generally installed at the outlet main pipe of the variable frequency pump group and connected to the water supply network to improve the water storage and regulation capacity of the system and achieve energy saving. In the water supply network behind the pump group, in order to control the pressure of the building water supply system, the current system mostly adopts the form of zoned water supply. The part with a pressure higher than 0.4MPa after the pump is reduced by setting a pressure reducing valve on the water supply horizontal pipe at different layers to reduce the system outlet pressure.

[0003] When the water pump is running, the pressure controller is mostly placed on the water supply main after the water supply pump and the regulating water storage tank. When the pressure here meets the control requirements of the water pump stopping and the water-using appliances at the end of the system are turned off, due to its hysteresis, the water actually delivered by the water pump to the water supply network exceeds the actual system needs, and the low-zone end of the water supply network is prone to system overpressure. The high zone may use water at the same time at the peak of water use due to the lag in water pump startup, resulting in insufficient water supply flow and pressure in the high zone.

[0004] Moreover, in the building water supply system, the pressure reducing valve can only ensure the stability of the pressure after the valve due to its principle limitation, and cannot recover the residual pressure and water volume of the water before the valve.

[0005] Therefore, the purpose of the utility model is to solve the problem of how to improve the pressure stability in the water supply network. Utility Model Content

[0006] In view of the above analysis, in order to solve the problem of how to improve the pressure stability in the water supply network, the utility model provides a water storage regulating device and a water supply system for a water supply system.

[0007] A water storage regulating device, comprising: a pressure reducing valve and a water storage regulator;

[0008] The water storage regulator is arranged on a side of the pressure reducing valve close to the water pump;

[0009] The water storage regulator includes a water storage cavity, a first piston and a first spring. The opening of the water storage cavity is connected to a water supply pipe. The first spring and the first piston are arranged in the water storage cavity. The first spring is configured to press the first piston toward the opening.

[0010] In some embodiments, a cross-section of the first piston matches a cross-section of the water storage chamber.

[0011] In some embodiments, one end of the water storage cavity opposite to the opening abuts against one end of the first spring, and the other end of the first spring abuts against a side of the first piston facing away from the opening.

[0012] In some embodiments, the water storage regulator also includes a first spring pressure regulator, and the spring pressure regulator is arranged between the first spring and the water storage cavity.

[0013] In some embodiments, the pressure relief valve comprises a spring-loaded pressure relief valve.

[0014] In some embodiments, the spring-type pressure reducing valve includes a valve body, a second piston, a diaphragm, and a second spring;

[0015] The valve body has a water inlet and a water outlet, both of which are connected to the water supply pipe, and the valve body also has a valve port, when the valve port is opened, the water inlet and the water outlet are connected through the valve port;

[0016] One end of the valve body opposite to the valve port abuts against one end of the second spring, the other end of the second spring abuts against one end of the second piston through the diaphragm, and the other end of the second piston is located at the valve port to control the opening and closing of the valve port;

[0017] A pressure chamber is formed between the diaphragm and the valve body, and the pressure chamber is communicated with the water outlet.

[0018] In some embodiments, the spring-type pressure reducing valve further includes a second spring pressure regulator, and the second spring pressure regulator is disposed between the second spring and the valve body.

[0019] In some embodiments, the water storage regulator is connected to the valve body, and the opening is communicated with the water inlet.

[0020] The utility model also provides a water supply system, comprising the water storage regulating device as described in any of the above embodiments.

[0021] In some embodiments, remote pressure gauges are provided on the front and rear pipes of the water storage and regulating device to obtain the water pressure in the front and rear pipes of the water storage and regulating device.

[0022] The above embodiments of the utility model have at least the following beneficial effects:

[0023] The embodiment of the utility model sets a water storage regulator on the front side of the pressure reducing valve, realizes the recovery of excess water supply and residual pressure before the pipe network pressure reducing valve through the cooperation of a spring and a piston, realizes pressure control at the end of the pipe network through the pressure reducing valve, thereby achieving the effect of not only realizing pressure control at the cross pipe through the pressure reducing valve, but also regulating the system pressure overpressure and excessive water supply caused by the shutdown of the water pump before the pressure reducing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the embodiments of this specification. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of the structure of a water storage regulating device for a water supply system provided by an embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the water replenishment state of a water storage regulating device of a water supply system provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments disclosed in this disclosure can be combined, separated, interchanged and / or rearranged with each other. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0028] The terms used here are for the purpose of describing specific embodiments, and are not intended to be restrictive. As used here, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, it is explained that there are stated features, integral bodies, steps, operations, parts, assemblies and / or their groups, but it is not excluded that there are or add one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups. It should also be noted that, as used here, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0029] The present disclosure is described below through several specific embodiments. In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components. Figure 1-Figure 2 In order to solve the problem of how to improve the pressure stability in the water supply network, the utility model provides a water storage regulating device and a water supply system for a water supply system.

[0030] The water storage regulating device comprises: a pressure reducing valve 10 and a water storage regulator 20;

[0031] The water storage regulator 20 is arranged on a side of the pressure reducing valve 10 close to the water pump;

[0032] The water storage regulator 20 includes a water storage cavity 21, a first piston 22 and a first spring 23. The opening 21a of the water storage cavity 21 is connected to the water supply pipe. The first spring 23 and the first piston 22 are arranged in the water storage cavity 21. The first spring 23 is configured to press the first piston 22 toward the opening 21a.

[0033] In some embodiments, a cross section of the first piston 22 matches a cross section of the water storage chamber 21 .

[0034] In some embodiments, one end of the water storage cavity 21 opposite to the opening 21 a abuts against one end of the first spring 23 , and the other end of the first spring 23 abuts against a side of the first piston 22 facing away from the opening 21 a .

[0035] In some embodiments, the water storage regulator 20 further includes a first spring pressure regulator 24 , and the spring pressure regulator 24 is disposed between the first spring 23 and the water storage cavity 21 .

[0036] In some embodiments, the pressure reducing valve 10 comprises a spring-loaded pressure reducing valve.

[0037] In some embodiments, the spring-type pressure reducing valve includes a valve body 11, a second piston 12, a diaphragm 13, and a second spring 14;

[0038] The valve body 11 has a water inlet and a water outlet, both of which are connected to the water supply pipe. The valve body 11 also has a valve port, and when the valve port is opened, the water inlet and the water outlet are connected through the valve port;

[0039] One end of the valve body 11 opposite to the valve port abuts against one end of the second spring 14, the other end of the second spring 14 abuts against one end of the second piston 12 through the diaphragm 13, and the other end of the second piston 12 is located at the valve port to control the opening and closing of the valve port;

[0040] A pressure chamber 15 is formed between the diaphragm 13 and the valve body 11 , and the pressure chamber 15 is communicated with the water outlet.

[0041] In some embodiments, the spring-type pressure reducing valve further includes a second spring pressure regulator 16 , and the second spring pressure regulator 16 is disposed between the second spring and the valve body 11 .

[0042] In some embodiments, the water storage regulator 20 is connected to the valve body 11, and the opening 21a is connected to the water inlet.

[0043] Specifically, in some embodiments, the working process of the utility model in application includes:

[0044] When the water-using appliance downstream of the water storage regulating device is turned on, the water pressure at the diaphragm 13 decreases, and the second spring pressure is greater than the water pressure, so that the second piston 12 is opened, and water flows into the downstream through the valve body 11. Figure 1 shown.

[0045] When the downstream appliance is shut down, the second piston 12 will be closed. At this time, because the end of the system no longer discharges water, after the water supply pump at the front end of the pipe network is shut down, some water is still pressed into the water supply network from the water pump, causing the water pressure in the water supply network to increase. At this time, the pressure causes the first piston 22 to move, and the water storage regulator 20 starts to store water. Figure 2 shown.

[0046] When the water pump stops completely, part of the water in the water supply network is stored in the water storage regulator 20 .

[0047] When the pressure in the water supply network behind the water supply pump drops, since the water pressure in the water storage regulator 20 is consistent with that in the network, the first piston 22 is actuated to replenish the stored water in the water storage regulator 20 into the water supply network.

[0048] The embodiment of the utility model sets a water storage regulator on the front side of the pressure reducing valve, realizes the recovery of excess water supply and residual pressure before the pipe network pressure reducing valve through the cooperation of a spring and a piston, realizes pressure control at the end of the pipe network through the pressure reducing valve, thereby achieving the effect of not only realizing pressure control at the cross pipe through the pressure reducing valve, but also regulating the system pressure overpressure and excessive water supply caused by the shutdown of the water pump before the pressure reducing valve.

[0049] The utility model also provides a water supply system, comprising the water storage regulating device as described in any of the above embodiments.

[0050] In some embodiments, remote pressure gauges are provided on the front and rear pipes of the water storage and regulating device to obtain the water pressure in the front and rear pipes of the water storage and regulating device.

[0051] The pressure gauges before and after the device capture the overpressure situation in the pipeline before the device and the insufficient pressure after the valve and transmit them to the variable frequency pump group control cabinet, systematically record the pressure changes of the terminal device, and form a water consumption change curve that is closer to the actual situation, so as to adjust the start and stop action of the water supply pump in the pump room, improve the operation efficiency of the water pump, and achieve energy saving effect.

[0052] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A water storage regulating device for a water supply system, characterized in that: include: A pressure reducing valve (10) and a water storage regulator (20); The water storage regulator (20) is arranged on a side of the pressure reducing valve (10) close to the water pump; The water storage regulator (20) comprises a water storage cavity (21), a first piston (22) and a first spring (23); an opening (21a) of the water storage cavity (21) is connected to a water supply pipeline; the first spring (23) and the first piston (22) are arranged in the water storage cavity (21); and the first spring (23) is configured to press the first piston (22) toward the opening (21a).

2. The water storage regulating device of the water supply system according to claim 1, characterized in that: The cross section of the first piston (22) matches the cross section of the water storage chamber (21).

3. The water storage regulating device of the water supply system according to claim 1, characterized in that: One end of the water storage cavity (21) opposite to the opening (21a) abuts against one end of the first spring (23), and the other end of the first spring (23) abuts against a side of the first piston (22) facing away from the opening (21a).

4. The water storage regulating device of the water supply system according to claim 3, characterized in that: The water storage regulator (20) further comprises a first spring pressure regulator (24), wherein the spring pressure regulator (24) is arranged between the first spring (23) and the water storage cavity (21).

5. The water storage regulating device of the water supply system according to claim 1, characterized in that: The pressure reducing valve (10) comprises a spring type pressure reducing valve.

6. The water storage regulating device of the water supply system according to claim 5, characterized in that: The spring-type pressure reducing valve comprises a valve body (11), a second piston (12), a diaphragm (13), and a second spring (14); The valve body (11) has a water inlet and a water outlet, both of which are connected to the water supply pipeline, and the valve body (11) also has a valve port, and when the valve port is opened, the water inlet and the water outlet are connected through the valve port; One end of the valve body (11) opposite to the valve port abuts against one end of the second spring (14), the other end of the second spring (14) abuts against one end of the second piston (12) through the diaphragm (13), and the other end of the second piston (12) is located at the valve port to control the opening and closing of the valve port; A pressure chamber (15) is formed between the diaphragm (13) and the valve body (11), and the pressure chamber (15) is in communication with the water outlet.

7. The water storage regulating device of the water supply system according to claim 6, characterized in that: The spring-type pressure reducing valve further comprises a second spring pressure regulator (16), wherein the second spring pressure regulator (16) is arranged between the second spring and the valve body (11).

8. The water storage regulating device of the water supply system according to claim 6, characterized in that: The water storage regulator (20) is connected to the valve body (11), and the opening (21a) is in communication with the water inlet.

9. A water supply system, characterized in that: It comprises a water storage regulating device as described in any one of claims 1-8.

10. The water supply system according to claim 9, characterized in that: Remote pressure gauges are provided on the front and rear pipes of the water storage and regulating device to obtain the water pressure in the front and rear pipes of the water storage and regulating device.

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