Non-negative pressure water supply equipment capable of monitoring water leakage

Abstract

The invention relates to the field of non-negative pressure water supply, in particular to non-negative pressure water supply equipment capable of monitoring water leakage, which comprises a water supply pipe, water pump assemblies, a water storage tank, a surge tank, a water leakage detection module and a dynamic leakage repairing module, the input end of the water pump assembly is connected with the water storage tank through a pipeline; a water leakage detection module is mounted on the surge tank and is used for monitoring the sealing performance in the surge tank; the dynamic leak repairing module is used for reconstructing a sealing environment in the surge tank when the internal sealing of the surge tank fails, and through the arranged dynamic leak repairing module, the sealing environment in the surge tank can be reconstructed when the water leakage detection module detects the internal leakage of the surge tank, so that the whole device can continue to operate; and water supply failure of a user caused by equipment maintenance is avoided.

Description

Technical Field

[0001] This application relates to the field of negative pressure water supply, and more particularly to a negative pressure water supply device capable of detecting leaks. Background Technology

[0002] Negative pressure-free water supply equipment is a secondary pressurization water supply system that connects directly to the municipal water supply network. It utilizes the residual pressure of the municipal network in series with other systems to ensure that the pressure in the municipal network is not less than a set protection pressure. The core of negative pressure-free water supply equipment lies in preventing negative pressure from forming during the operation of the secondary pressurization system, eliminating the impact of the unit's operation on the municipal network, and achieving safe, reliable, stable, and continuous water supply without affecting the water use of nearby users.

[0003] Existing negative pressure-free water supply equipment includes: a pressure stabilizing tank, a vacuum suppressor, and a variable frequency speed-regulating water pump unit. The pressure stabilizing tank includes a tank body and a diaphragm installed inside the tank body. The diaphragm divides the internal space of the tank body into a water chamber and an air chamber. The water chamber is connected to the water supply pipeline. When the fluid pressure in the water supply pipeline is greater than the air pressure in the air chamber, the fluid in the water supply pipeline flows into the water chamber, causing the diaphragm to expand towards the air chamber until the air pressure in the air chamber and the water pressure in the water chamber reach equilibrium. At this time, if the fluid pressure in the water supply pipeline suddenly decreases, the air pressure will push the water in the water chamber into the pipeline to achieve a pressurization effect. When the fluid pressure in the water supply pipeline increases, the water in the water supply pipeline will flow into the water chamber, thereby achieving the function of pressure stabilization.

[0004] Because the diaphragm inside the pressure stabilizing tank is affected by water pressure, it will continuously move inside the tank. The edges of the diaphragm, especially the parts connected to the tank body, are prone to breakage and leakage due to water pressure fluctuations. Summary of the Invention

[0005] To address the problems existing in the prior art, this application provides a negative pressure-free water supply device capable of detecting water leakage.

[0006] A pressure-free water supply device capable of detecting leaks includes: a water supply pipe, a water pump assembly, a water storage tank, a pressure stabilizing tank, a leak detection module, and a dynamic leak repair module. The water supply pipe is connected to the output ends of several water pump assemblies and is also connected to the pressure stabilizing tank via a pipe. The input end of each water pump assembly is connected to the water storage tank via a pipe. A leak detection module is installed on the pressure stabilizing tank to monitor the sealing performance inside the tank. The dynamic leak repair module is used to reconstruct a sealing environment inside the pressure stabilizing tank when the internal seal fails.

[0007] Furthermore, an airbag is installed inside the pressure stabilizing tank, and the dynamic leak repair module includes a propulsion component and a diaphragm. The diaphragm is annular, and one end of both the diaphragm and the airbag is fixed to the inner wall of the pressure stabilizing tank. One end of the propulsion assembly is annular, and the outer surface of this end is attached to the inner surface of the diaphragm, and a force is applied to the diaphragm toward the airbag, so that the outer surface of the water supply pipe is attached to the inner wall of the pressure stabilizing tank to achieve the function of sealing and isolation.

[0008] Furthermore, a drive assembly is provided below the pressure stabilizing tank, which can output thrust along its axial direction to the propulsion assembly.

[0009] Furthermore, the propulsion assembly includes a connecting rod, a push plate, a bracket, rollers, a mounting ring, and a pressurized air cushion. One end of the connecting rod is fixedly connected to the push plate, and the other end of the connecting rod is fixedly connected to the bracket. The end of the bracket away from the connecting rod is fixedly connected to the mounting ring. A plurality of circumferentially distributed rollers are mounted on the mounting ring. The rollers have a spindle-shaped circumferential surface that fits against the diaphragm. Correspondingly, a plurality of mounting grooves for mounting the rollers are provided on the mounting ring.

[0010] Furthermore, an annular airbag is installed at the end of the mounting ring away from the bracket; the annular airbag is annular, hollow inside, and fixedly installed inside the mounting ring; the mounting ring is provided with an annular groove for installing the annular airbag, the height of the outer wall of the annular groove is less than the height of the inner wall of the annular groove, and the outer ring surface of the annular airbag extends outward to wrap around the outer wall of the annular groove.

[0011] Furthermore, an annular pressure strip is fixedly installed on the inner wall of the pressure stabilizing tank. One side of the diaphragm and the airbag is located between the annular pressure strip and the pressure stabilizing tank. The outer surface of the annular pressure strip has a stepped structure, and the inner wall of the pressure stabilizing tank is also provided with protrusions that engage with it.

[0012] Furthermore, the pressure stabilizing tank has a circular opening at the bottom, and extends downward from the circular opening to form a cylindrical structure; a sealing gasket is provided inside the circular opening, the sealing gasket is beaker-shaped, the bottom of the push plate is in contact with the inner bottom of the sealing gasket, and the diameter of the push plate is equal to the inner diameter of the sealing gasket, the outer diameter of the sealing gasket is larger than the diameter of the cylindrical structure, a fixing ring is also provided inside the pressure stabilizing tank, the fixing ring is fixedly connected to the pressure stabilizing tank, the edge of the sealing gasket is located between the fixing ring and the pressure stabilizing tank, a push plate is also provided below the sealing gasket, the upper surface of the push plate is in contact with the sealing gasket, and a push rod is fixedly connected to the bottom of the push plate.

[0013] Furthermore, a pressure cushion is attached to the upper surface of the push plate.

[0014] Furthermore, the drive assembly consists of an electric cylinder and two connecting shafts. One connecting shaft is inclined and rotatably connected to a push rod; the other connecting shaft is horizontally arranged and inserted into a linear guide rail, with one end fixedly connected to the output end of the electric cylinder. The two connecting shafts are rotatably connected.

[0015] Furthermore, the leak detection module is a leak detector.

[0016] The technical effects and advantages of this application are as follows: In this application, by setting a dynamic leak repair module, when the leak detection module detects a leak inside the pressure tank, the internal sealing environment of the pressure tank can be reconstructed, so that the entire device can continue to operate and avoid water outages for users due to equipment maintenance.

[0017] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0018] Figure 1 A schematic diagram of a pressure-free water supply device capable of monitoring leaks is shown. Figure 2 A schematic diagram of the pressure stabilizing tank is shown; Figure 3 A cross-sectional view of the pressure stabilizing tank is shown; Figure 4 A schematic diagram of the propulsion component is shown; Figure 5 It shows Figure 3 A magnified view of a portion of the image; Figure 6 It shows Figure 3 Enlarged view of part B in the image; Figure 7 It shows Figure 3 A magnified view of part C in the image; In the diagram: 1-Water supply pipe, 2-Water pump assembly, 3-Water storage tank, 4-Pressure stabilizing tank, 5-Leakage detection module, 6-Propulsion assembly, 7-Drive assembly, 8-Push rod, 9-Diaphragm, 10-Airbag, 11-Annular pressure strip; 61-Connecting rod, 62-Push plate, 63-Bracket, 64-Roller, 65-Mounting ring, 66-Annular airbag, 67-Pressurized air cushion, 68-Sealing gasket, 69-Fixing ring, 81-Push plate. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] Furthermore, in the application, the terms "first," "second," and other similar words are not intended to imply any order, quantity, or importance, but are merely used to distinguish different elements, and the terms "upper," "lower," "left," "right," and other similar words are merely positional relationships in the accompanying drawings.

[0021] like Figure 1 As shown in the figure, this application embodiment provides a negative pressure-free water supply device capable of detecting water leakage, including: a water supply pipe 1, a water pump assembly 2, a water storage tank 3, a pressure stabilizing tank 4, a leakage detection module 5, and a dynamic leak repair module. The water supply pipe 1 is connected to the output ends of several water pump assemblies 2, and the water supply pipe 1 is also connected to the pressure stabilizing tank 4 via a pipe. The input end of the water pump assembly 2 is connected to the water storage tank 3 via a pipe. The pressure stabilizing tank 4 is equipped with a leakage detection module 5, which is used to monitor the sealing performance inside the pressure stabilizing tank 4. The dynamic leak repair module is used to reconstruct a sealing environment inside the pressure stabilizing tank 4 when the internal seal fails.

[0022] Specifically, such as Figure 3 As shown, an airbag 10 is installed inside the pressure stabilizing tank 4. The dynamic leak repair module includes a propulsion component 6 and a diaphragm 9. The diaphragm 9 is annular, and one end of both the diaphragm 9 and the airbag 10 is fixed to the inner wall of the pressure stabilizing tank 4. One end of the propulsion component 6 is annular, and its outer surface is attached to the inner surface of the diaphragm 9, applying a force toward the airbag 10 to the diaphragm 9, so that the outer surface of the water supply pipe 1 is attached to the inner wall of the pressure stabilizing tank 4 to achieve a sealing and isolation function. During this process, the diaphragm 9 separates the airbag 10 from the propulsion component 6, avoiding direct contact between the propulsion component 6 and the airbag 10 and causing damage. At the same time, it also has the function of dispersing pressure, so that the thrust of the propulsion component 6 is evenly applied to the airbag 10.

[0023] like Figure 2 As shown, a drive assembly 7 is also provided below the pressure stabilizing tank 4. The drive assembly 7 can output a thrust along its axis to the propulsion assembly 6. Thus, when the airbag 10 is damaged by pressure, the drive assembly 7 will push the propulsion assembly 6 upward, changing the position where the airbag 10 and the pressure stabilizing tank 4 are in contact and sealed, so that the airbag 10 can regain its sealing and isolation function.

[0024] like Figure 4As shown, the propulsion assembly 6 includes a connecting rod 61, a push plate 62, a bracket 63, rollers 64, a mounting ring 65, and a pressurizing air cushion 67. One end of the connecting rod 61 is fixedly connected to the push plate 62, and the other end of the connecting rod 61 is fixedly connected to the bracket 63. The end of the bracket 63 away from the connecting rod 61 is fixedly connected to the mounting ring 65. A plurality of circumferentially distributed rollers 64 are mounted on the mounting ring 65. The rollers 64 have a spindle-shaped circumferential surface, and the circumferential surface is in contact with the diaphragm 9. Correspondingly, a plurality of mounting grooves for mounting the rollers 64 are provided on the mounting ring 65.

[0025] With this configuration, when the airbag 10 ruptures under pressure, the propulsion assembly 6 can be driven forward, causing the roller 64 to move forward along the inner surface of the diaphragm 9. During this process, the positions of the diaphragm 9 and the airbag 10 will not change, but the sealing position between the airbag 10 and the pressure stabilizing tank 4 will change, forming a new sealing structure.

[0026] like Figure 5 As shown, in one embodiment of this application, an annular airbag 66 is installed at the end of the mounting ring 65 away from the bracket 63; the annular airbag 66 is annular, hollow inside, and fixedly installed inside the mounting ring 65; the mounting ring 65 is provided with an annular groove for installing the annular airbag 66, the height of the outer wall of the annular groove is less than the height of the inner wall of the annular groove, and the outer ring surface of the annular airbag 66 extends outward to wrap around the outer wall of the annular groove; thus, when affected by water pressure, the air inside the annular airbag 66 is compressed, the outer ring of the annular airbag 66 is squeezed outward and extended, and a thrust is generated on the diaphragm 9 to enhance the pressure between the diaphragm 9 and the airbag 10 and between the airbag 10 and the pressure stabilizing tank 4, so as to enhance the sealing effect.

[0027] like Figure 6 As shown, in one embodiment of this application, an annular pressure strip 11 is fixedly installed on the inner wall of the pressure stabilizing tank 4. One side of the diaphragm 9 and the airbag 10 is located between the annular pressure strip 11 and the pressure stabilizing tank 4. The outer surface of the annular pressure strip 11 has a stepped structure, and the inner wall of the pressure stabilizing tank 4 is also provided with protrusions that engage with it. Thus, when the diaphragm 9 and the airbag 10 are located between the annular pressure strip 11 and the pressure stabilizing tank 4, they have multiple turns, which can increase the fixing effect of the annular pressure strip 11 on the diaphragm 9 and the airbag 10.

[0028] like Figure 7As shown, a pressurizing gas cushion 67 is attached to the upper surface of the push plate 62. The bottom of the pressure stabilizing tank 4 has a circular opening, and a cylindrical structure extends downward from the circular opening. A sealing gasket 68 is provided inside the circular opening. The sealing gasket 68 is beaker-shaped. The bottom of the push plate 62 is attached to the inner bottom of the sealing gasket 68, and the diameter of the push plate 62 is equal to the inner diameter of the sealing gasket 68. The outer diameter of the sealing gasket 68 is larger than the diameter of the cylindrical structure. A fixing ring 69 is also provided inside the pressure stabilizing tank 4. The fixing ring 69 is fixedly connected to the pressure stabilizing tank 4. The edge of the sealing gasket 68 is located between the fixing ring 69 and the pressure stabilizing tank 4. A push plate 81 is also provided below the sealing gasket 68. The upper surface of the push plate 81 is attached to the sealing gasket 68, and the bottom of the push plate 81 is fixedly connected to the sealing gasket 68. A push rod 8 is connected, so that by pushing the push plate 81 upward by the push rod 8, the connecting rod 61 can be moved upward. Under the influence of water pressure, the outer ring of the pressurized air cushion 67 expands outward, applying a force to the sealing gasket 68 toward the cylindrical structure to enhance the sealing performance. The greater the water pressure, the greater the pressure between the sealing gasket 68 and the cylindrical structure. On the other hand, the outer surface of the sealing gasket 68 is in contact with the cylindrical structure, and the bottom of the sealing gasket 68 is in contact with the push plate 81. The entire annular surface of the sealing gasket 68 is only subjected to the pressure of water pressure. Compared with annular seals, the sealing gasket 68 has a better sealing effect. Furthermore, the connecting rod 61 and the push plate 62 are located inside the pressure stabilizing tank 4. The push rod 8 drives the push plate 62 to move through the sealing gasket 68, thereby avoiding water pollution.

[0029] like Figure 2 As shown, the drive assembly 7 consists of an electric cylinder and two connecting shafts. One connecting shaft is inclined and rotatably connected to the push rod 8; the other connecting shaft is horizontally set and inserted into a linear guide rail, with one end fixedly connected to the output end of the electric cylinder. The two connecting shafts are rotatably connected. In this way, after the water pressure acts on the push rod 8 through the push plate 62, it is transmitted to the connecting shaft. When the water pressure is transmitted from the inclined connecting shaft to the horizontal connecting shaft, the pressure has a downward component, thereby reducing the impact of water pressure fluctuations on the electric cylinder and reducing the pressure on the electric cylinder.

[0030] It should be noted that the leak detection module 5 can be one or more combinations of various existing sensors for detecting leaks, which will not be elaborated on here. For example, the leak detection module 5 is a leak detector.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of this application and is not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A pressure-free water supply device capable of detecting water leakage, characterized in that, include: The system includes a water supply pipe (1), a water pump assembly (2), a water storage tank (3), a pressure stabilizing tank (4), a leak detection module (5), and a dynamic leak repair module. The water supply pipe (1) is connected to the output ends of several water pump assemblies (2), and the water supply pipe (1) is also connected to the pressure stabilizing tank (4) through a pipe. The input end of the water pump assembly (2) is connected to the water storage tank (3) through a pipe. The pressure stabilizing tank (4) is equipped with a leak detection module (5), which is used to monitor the sealing performance inside the pressure stabilizing tank (4). The dynamic leak repair module is used to rebuild the sealing environment inside the pressure stabilizing tank (4) when the internal seal of the pressure stabilizing tank (4) fails.

2. The pressure-free water supply device capable of detecting water leakage according to claim 1, characterized in that, An airbag (10) is installed inside the pressure stabilizing tank (4). The dynamic leak repair module includes a propulsion component (6) and a diaphragm (9). The diaphragm (9) is annular, and one end of the diaphragm (9) and the airbag (10) are fixed to the inner wall of the pressure stabilizing tank (4). One end of the propulsion assembly (6) is annular, and the outer surface of the end is attached to the inner surface of the diaphragm (9) and a force is applied to the diaphragm (9) toward the airbag (10) so that the outer surface of the water supply pipe (1) is attached to the inner wall of the pressure stabilizing tank (4) to achieve the function of sealing and isolation.

3. A pressure-free water supply device capable of detecting water leakage according to claim 1, characterized in that, Below the pressure stabilizing tank (4) is a drive assembly (7), which can output thrust along its axial direction to the propulsion assembly (6).

4. A pressure-free water supply device capable of detecting water leakage according to claim 2, characterized in that, The propulsion assembly (6) includes a connecting rod (61), a push plate (62), a bracket (63), rollers (64), a mounting ring (65), and a pressurizing air cushion (67). One end of the connecting rod (61) is fixedly connected to the push plate (62), and the other end of the connecting rod (61) is fixedly connected to the bracket (63). The end of the bracket (63) away from the connecting rod (61) is fixedly connected to the mounting ring (65). Several rollers (64) are circumferentially distributed on the mounting ring (65). The rollers (64) have a spindle-shaped circumferential surface, and the circumferential surface is in contact with the diaphragm (9). Correspondingly, several mounting grooves for mounting the rollers (64) are provided on the mounting ring (65).

5. A pressure-free water supply device capable of detecting water leakage according to claim 4, characterized in that, An annular airbag (66) is installed at the end of the mounting ring (65) away from the bracket (63); the annular airbag (66) is annular, hollow inside, and fixedly installed inside the mounting ring (65); the mounting ring (65) is provided with an annular groove for installing the annular airbag (66), the height of the outer wall of the annular groove is less than the height of the inner wall of the annular groove, and the outer ring surface of the annular airbag (66) extends outward to wrap the outer wall of the annular groove.

6. A pressure-free water supply device capable of detecting water leakage according to claim 5, characterized in that, An annular pressure strip (11) is fixedly installed on the inner wall of the pressure stabilizing tank (4). One side of the diaphragm (9) and the airbag (10) is located between the annular pressure strip (11) and the pressure stabilizing tank (4). The outer surface of the annular pressure strip (11) has a stepped structure, and the inner wall of the pressure stabilizing tank (4) is also provided with a protrusion that engages with it.

7. A pressure-free water supply device capable of detecting water leakage according to claim 4, characterized in that, The pressure stabilizing tank (4) has a circular opening at the bottom, and extends downward from the circular opening to form a straight cylindrical structure; a sealing gasket (68) is provided inside the circular opening, the sealing gasket (68) is beaker-shaped, the bottom of the push plate (62) is in contact with the bottom of the inner side of the sealing gasket (68), and the diameter of the push plate (62) is equal to the inner diameter of the sealing gasket (68), the outer diameter of the sealing gasket (68) is larger than the diameter of the straight cylindrical structure, a fixing ring (69) is also provided inside the pressure stabilizing tank (4), the fixing ring (69) is fixedly connected to the pressure stabilizing tank (4), the edge of the sealing gasket (68) is located between the fixing ring (69) and the pressure stabilizing tank (4), a push plate (81) is also provided below the sealing gasket (68), the upper surface of the push plate (81) is in contact with the sealing gasket (68), and a push rod (8) is fixedly connected to the bottom of the push plate (81).

8. A pressure-free water supply device capable of detecting water leakage according to claim 7, characterized in that, The upper surface of the push plate (62) is fitted with a pressure air cushion (67).

9. A pressure-free water supply device capable of detecting water leakage according to claim 3, characterized in that, The drive assembly (7) consists of an electric cylinder and two connecting shafts. One connecting shaft is inclined and rotatably connected to the input end of the dynamic leak repair module. The other connecting shaft is horizontally set and inserted into a linear guide rail. One end is fixedly connected to the output end of the electric cylinder. The two connecting shafts are rotatably connected.

10. A pressure-free water supply device capable of detecting water leakage according to claim 1, characterized in that, The leak detection module (5) is a leak detector.

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