Piston type pressure-stabilizing water replenishing device

Abstract

The utility model relates to a piston type pressure-stabilizing water replenishing device which comprises a hollow outer cylinder, a hollow inner cylinder is arranged in the outer cylinder, one end of the inner cylinder is open, the other end of the inner cylinder is connected with the inner wall of the outer cylinder, and a piston body capable of sliding back and forth in the axial direction of the inner cylinder is arranged in the inner cylinder. The inner cylinder is divided into an air pressure cavity and a fluid cavity by the piston body, the air pressure cavity is connected with an inner cavity of the outer cylinder through a communication hole, the fluid cavity is connected with a pipe network through a communication connector, and the two ends of the inner cylinder are each provided with a limiting structure used for limiting the sliding space of the piston body. The piston is used for replacing an air bag or a diaphragm in the prior art to stabilize the pressure of a pipe network, aging and cracking risks are reduced, the pressure stabilizing effect is guaranteed, the service life of the pressure stabilizing device is prolonged, and the pressure stabilizing device of the structure is simple in structure, long in service life and reliable in operation.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe network pressure stabilizing devices, in particular to a piston type pressure stabilizing water replenishing device. Background Art

[0002] Currently, urbanization is accelerating, and water consumption in cities is steadily increasing. Consequently, the length of water supply pipelines is increasing, and insufficient water pressure at the end is common. This is especially true for high-rise buildings, where water needs to be supplied directly through secondary pressurization or by secondary pressurization to rooftop water tanks before being distributed downwards to users within the building.

[0003] With the passage of time, rooftop water tanks are gradually being phased out. Water supply to users in high-rise buildings now primarily relies on direct, secondary pressurized water supply. Due to the incompressible nature of water, a pressure stabilizer is required on the pump outlet pipe to maintain stable pressure in the terminal network and reduce the number of pump starts and stops. This device relies on the compressibility of air pressure to stabilize the network pressure, ensuring a better user experience. The most commonly used pressure stabilizers on the market contain an internal airbag or diaphragm structure. These airbags or diaphragms are particularly susceptible to aging and rupture, causing the pressure stabilizer to lose its pressure-stabilizing function and causing the pump to start and stop frequently. Furthermore, these ruptures can cause water to enter the airbag or diaphragm, where direct contact with the pressure stabilizer can contaminate the water. Especially for pressure stabilizers made of carbon steel, rust can enter the user's network with the water, seriously affecting water quality and the lifespan of the pump. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a piston-type pressure-stabilizing water-replenishing device to replace the airbag or diaphragm in the prior art, reduce the risk of aging and rupture, and increase the life of the pressure-stabilizing device while ensuring the pressure-stabilizing effect.

[0005] The technical solution adopted by the utility model to solve its technical problems is: to provide a piston-type pressure-stabilizing water-replenishing device, comprising a hollow outer cylinder, a hollow inner cylinder arranged in the outer cylinder, one end of the inner cylinder being open, and the other end being connected to the inner wall of the outer cylinder, a piston body being arranged in the inner cylinder and being able to slide back and forth along the axis of the inner cylinder, the inner cylinder being divided into an air pressure chamber and a fluid chamber by the piston body, the air pressure chamber being connected to the inner cavity of the outer cylinder through a connecting hole, the fluid chamber being connected to the pipeline through a connecting interface, and a limiting structure for limiting the sliding space of the piston body being respectively provided at both ends of the inner cylinder.

[0006] Preferably, the limiting structure includes a retaining ring provided on a side close to the outer cylinder wall and a blind plate provided on one side of the opening, the communicating hole is provided between the retaining ring and the inner wall of the outer cylinder, and the communicating interface is provided on the blind plate.

[0007] Preferably, the piston body includes a piston top plate and a piston bottom plate, the piston top plate and the piston bottom plate are connected via a connecting column, and a balancing hole is opened on the surface of the piston top plate.

[0008] Preferably, a valve is provided on the surface of the outer cylinder.

[0009] Preferably, the surface of the outer cylinder is provided with an air pressure regulating hole connected to the atmosphere.

[0010] Preferably, a plurality of lifting ears are provided on the top of the outer cylinder.

[0011] Preferably, a plurality of supporting legs are provided at the bottom of the outer cylinder.

[0012] Preferably, the side of the piston bottom plate facing the opening is an arc concave surface.

[0013] Preferably, an air pressure detection gauge is provided at the valve.

[0014] The beneficial effects are as follows: compared with the existing technology, the present invention divides the internal space of the pressure stabilizing device into two cavities by arranging a movable piston body, the upper part of the piston is an air pressure chamber, and the lower part is a fluid chamber; by arranging a limiting structure on the inner wall of the inner cylinder, the movement position of the piston is limited to prevent water from entering the air pressure chamber when the pressure is too high; by arranging a circular arc concave surface, the force on the piston can be made more uniform, and by arranging a threaded hole, the piston can be conveniently removed during inspection and maintenance, and a stop is provided to facilitate the installation and positioning of the blind plate, and at the same time, it also prevents the piston from falling out of the inner cylinder when it moves to the bottom; by arranging a sealing ring around the piston body, the air pressure chamber and the fluid chamber are completely separated; by arranging a piston top plate, the stability of the piston movement can be controlled, and the sealing between the air pressure chamber and the fluid chamber is effectively guaranteed.

[0015] In summary, the utility model uses a piston to replace the airbag or diaphragm in the existing technology to stabilize the pipe network, reduce the risk of aging and rupture, and improve the life of the pressure stabilizing device while ensuring the pressure stabilizing effect. This structural pressure stabilizing device has a simple structure, long life, and reliable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of a piston-type pressure-stabilizing water supply device.

[0017] Figure 2 This is a diagram of the internal structure of a piston-type pressure-stabilizing water supply device.

[0018] Among them, 1-outer cylinder; 101-valve; 102-lifting ear; 103-air pressure regulating hole; 104-stop; 105-blind plate; 106-connecting interface; 107-flange; 108-support leg; 2-inner cylinder; 201-retaining ring; 202-connecting hole; 3-piston body; 301-sealing ring; 302-balancing hole.

[0019] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are intended only to illustrate the present invention and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the contents of this invention, those skilled in the art may make various changes or modifications to the present invention, and that such equivalents also fall within the scope of the claims appended hereto.

[0021] The utility model provides a piston-type pressure-stabilizing water-replenishing device, comprising a hollow outer cylinder 1, a hollow inner cylinder 2 being provided in the outer cylinder 1, one end of the inner cylinder 2 being open, and the other end being connected to the inner wall of the outer cylinder 1, a piston body 3 being provided in the inner cylinder 2 and being able to slide back and forth axially along the inner cylinder 2, the inner cylinder 2 being divided into an air pressure chamber and a fluid chamber by the piston body 3, the air pressure chamber being connected to the inner cavity of the outer cylinder 1 via a connecting hole 202, the fluid chamber being connected to the pipe network via a connecting interface 106, and a limiting structure being provided at each end of the inner cylinder 2 for limiting the sliding space of the piston body 3.

[0022] In a Figure 1 、 2 In the specific embodiment shown, the limiting structure includes a retaining ring 201 provided on a side close to the wall of the outer cylinder 1 and a blind plate 105 provided on one side of the opening, the communicating hole 202 is provided between the retaining ring 201 and the inner wall of the outer cylinder 1, and the communicating interface 106 is provided on the blind plate 105.

[0023] One open end of the inner cylinder 2 is connected to the blind plate 105 through a flange 107 with threaded holes. The open end is provided with a stop 104, which not only facilitates the installation of the blind plate 105 but also serves as a limit to prevent the piston body 3 from sliding to the bottom.

[0024] To ensure that the piston body 3 does not flip over when moving within the inner tube 2, the piston body 3 includes a piston top plate and a piston bottom plate. The piston top plate and the piston bottom plate are connected by a connecting column. A balancing hole 302 is provided on the surface of the piston top plate to connect the space where the connecting column is located with the upper air pressure chamber. There is at least one balancing hole 302. At the same time, at least one sealing ring 301 is provided around the piston bottom plate to ensure the seal between the piston body 3 and the inner wall of the inner tube 2, preventing the fluid in the fluid chamber below the piston body 3 from entering the air pressure chamber. In addition, the side of the piston bottom plate facing the opening is a circular arc concave surface, so that the force on the piston body 3 is more uniform.

[0025] The outer cylinder 1 is provided with a valve 101. The valve 101 is provided with an air pressure detection gauge, which can be mechanical or digital, and provides air pressure values for the pipe network water pump equipped with the pressure stabilizing device of the present invention, so as to control the start and stop of the water pump under different air pressure conditions.

[0026] In addition to the valve 101, the surface of the outer tube 1 is provided with an air pressure regulating hole 103 connected to the atmosphere. The air pressure regulating hole 103 is normally closed and has a vent valve inside. The initial air pressure in the air pressure chamber is adjusted through the air pressure regulating hole 103 as needed.

[0027] The top of the outer tube 1 is provided with a plurality of lifting ears 102 so that the voltage stabilizing device of the present invention can be lifted to the working position; at the same time, the bottom of the outer tube 1 is provided with a plurality of supporting legs 108 so that the voltage stabilizing device of the present invention can be installed above the pipe network interface, so as to facilitate the connection of the connecting interface 106 with the pipe network.

[0028] Before using the present invention, the inner cavity of the outer cylinder 1 is inflated in advance through the air pressure regulating hole 103, and the indication of the air pressure detection gauge is observed at the same time. When the preset pressure is reached, the pressurization is stopped; then the present invention is installed on the pipeline network, and the connecting interface 106 is connected to the pipeline network; when working, the piston body 3 can move up and down in the inner cylinder 2 according to the pressure changes of the connecting pipeline network. When the pipeline pressure is high, the fluid enters the lower half of the inner cylinder 2 and forces the piston body 3 to move upward, and the air in the upper part of the inner cylinder 2 and the inner cavity of the outer cylinder 1, that is, the air pressure chamber, is compressed, and the pressure of the pressure stabilizing device gradually increases. When the air pressure detected by the air pressure detection gauge reaches a preset value, the water supply pump of the control network stops working. At this time, the water pressure in the pipe network is balanced with the air pressure in the pressure stabilizing device. When water is used at the end of the pipe network, since the water pump is in a stopped state, the pipe network will give priority to providing the water stored in the inner cylinder 2 until the air pressure detection gauge of the pressure stabilizing device measures that the internal air pressure is lower than the preset lower limit value, and the water supply pump of the control network starts working again. Repeating the above cycle can stabilize the terminal pressure and greatly reduce the number of starts and stops of the water pump.

Claims

1. A piston-type pressure-stabilizing water supply device, comprising a hollow outer cylinder, characterized in that: A hollow inner cylinder is provided in the outer cylinder, one end of the inner cylinder is open, and the other end is connected to the inner wall of the outer cylinder. A piston body is provided in the inner cylinder and can slide forward and backward along the axis of the inner cylinder. The inner cylinder is divided into an air pressure chamber and a fluid chamber by the piston body. The air pressure chamber is connected to the inner chamber of the outer cylinder through a connecting hole, and the fluid chamber is connected to the pipe network through a connecting interface. Both ends of the inner cylinder are respectively provided with limiting structures for limiting the sliding space of the piston body.

2. A piston-type pressure-stabilizing water supply device according to claim 1, characterized in that: The limiting structure includes a retaining ring provided on a side close to the outer cylinder wall and a blind plate provided on one side of the opening. The communicating hole is provided between the retaining ring and the inner wall of the outer cylinder, and the communicating interface is provided on the blind plate.

3. A piston-type pressure-stabilizing water supply device according to claim 1, characterized in that: The piston body includes a piston top plate and a piston bottom plate. The piston top plate and the piston bottom plate are connected via a connecting column. A balancing hole is opened on the surface of the piston top plate.

4. A piston-type pressure-stabilizing water supply device according to claim 1, characterized in that: A valve is provided on the surface of the outer cylinder.

5. A piston-type pressure-stabilizing water supply device according to claim 1, characterized in that: An air pressure regulating hole communicating with the atmosphere is provided on the surface of the outer cylinder.

6. A piston-type pressure-stabilizing water supply device according to claim 1, characterized in that: A plurality of lifting ears are provided on the top of the outer cylinder.

7. The piston-type pressure-stabilizing water supply device according to claim 1, characterized in that: A plurality of supporting legs are provided at the bottom of the outer cylinder.

8. The piston-type pressure-stabilizing water supply device according to claim 3, characterized in that: A surface of the piston bottom plate facing the opening is an arc concave surface.

9. The piston-type pressure-stabilizing water supply device according to claim 4, characterized in that: An air pressure detection gauge is provided at the valve.

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