Tail end pressure presumption type non-negative pressure water supply equipment

Abstract

The utility model discloses tail end pressure presumption type non-negative pressure water supply equipment, which relates to the technical field of municipal water supply and comprises a flow guide pipe, first butt-joint pipes are connected to connecting ports at two ends of the flow guide pipe, the first butt-joint pipes are connected with second butt-joint pipes through shunting ports of electromagnetic three-way valves, and a pressure relief assembly is arranged at the other ends of the second butt-joint pipes. The pressure relief assembly mainly comprises a diversion pipe, a pressure relief pipe and a confluence pipe, the pressure relief assembly is additionally arranged between the diversion pipe and a user pipe network, when the pressure at the tail end exceeds a preset value, the electromagnetic three-way valve starts to turn to the diversion port and enters the pressure relief assembly, and a certain pressure reduction effect is achieved through the design of diversion and the spiral inner pipe; and when the pressure relief assembly cannot effectively reduce the tail end pressure, the external controller can reduce the rotating speed of the pressure pump set, repeated frequency conversion of the pressure pump set can be reduced through double guarantee, and meanwhile the pressure relief effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal water supply, in particular to a terminal pressure estimation type non-negative pressure water supply equipment. Background Art

[0002] The non-negative pressure water supply equipment is a pressurized water supply unit that is directly connected to the municipal water supply network. It supplies water in series with superimposed pressure based on the residual pressure of the municipal network to ensure that the pressure of the municipal network is not less than the set protection pressure (the set pressure must be higher than the pressure requirement of the community direct supply area, generally not less than 1.2Kg). It is a secondary pressurized water supply equipment.

[0003] You can refer to the existing document Terminal Pressure Estimation Type Non-Negative Pressure Water Supply Equipment (CN206233308U). The reference document adds a pressure detection gauge at the terminal water use point. When the detected terminal pressure is greater than the system preset value, the frequency converter is used to reduce the water pump speed and reduce the water pump head to reduce the pressure at the terminal water use point.

[0004] However, when used in the above manner, when the pressure at the terminal water point is high, it is necessary to continuously maintain the terminal pressure within an appropriate range by varying the speed of the water pump, which will increase the load on the water pump and lead to increased energy consumption. Therefore, a terminal pressure estimation type non-negative pressure water supply equipment that can perform preliminary pressure relief is designed. Utility Model Content

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a terminal pressure-inferred non-negative pressure water supply equipment. The present invention adds a pressure relief component between the diversion pipe and the user pipe network. When the terminal pressure exceeds the preset value, the electromagnetic three-way valve begins to turn to the diversion port and enters the pressure relief component. The diversion and the design of the spiral inner tube play a certain pressure-reducing role, thereby performing preliminary pressure relief without directly adjusting the frequency of the pressure pump group. When the pressure relief component cannot effectively reduce the terminal pressure, the external controller will reduce the speed of the pressure pump group. The double protection can reduce the repeated frequency conversion of the pressure pump group and improve the pressure relief effect.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A terminal pressure-inferred non-negative pressure water supply equipment includes: a guide pipe, wherein the connection ports at both ends of the guide pipe are connected to a connecting pipe 1, and the connecting pipe 1 is connected to a connecting pipe 2 through a diversion port of an electromagnetic three-way valve. A pressure relief component is provided at the other end of the connecting pipe 2, and the pressure relief component mainly includes a diversion pipe, a pressure relief pipe and a converging pipe.

[0008] The utility model is further configured such that the main flow port of the electromagnetic three-way valve is connected to the user pipe network.

[0009] The utility model is further configured such that the main pipe of the combined pipe is connected to the user pipe network.

[0010] The utility model is further configured such that a spiral inner tube is fixedly connected to the interior of the pressure relief tube, and both ends of the spiral inner tube are respectively connected to the branch pipes of the diversion pipe and the branch pipes of the confluence pipe.

[0011] The utility model is further configured to include: a mounting base, a simmering pot is arranged above the mounting base, the water inlet of the simmering pot is connected to the municipal pipe network, and the outlet pipe at the bottom of the simmering pot is connected to a disinfection component.

[0012] The utility model is further configured such that one end of the disinfection component is connected to a pressure pump group, the water outlet end of the pressure pump group is connected to a second water outlet pipe, and the upper portion of the second water outlet pipe is connected to a guide pipe.

[0013] The utility model is further configured to install a pressure detection instrument on the terminal pipeline of the user pipeline network, the pressure detection instrument is connected to the external controller signal, and the external controller is electrically connected to the electromagnetic three-way valve.

[0014] The beneficial effects of the utility model are:

[0015] 1. The non-negative pressure water supply equipment is equipped with a pressure relief component between the diversion pipe and the user pipeline. The water flow can be divided into multiple branches through the diversion pipe, and then enter the spiral inner tube inside the pressure relief pipe respectively. The water pressure at the outlet is reduced through the diversion and the spiral inner tube.

[0016] 2. This non-negative pressure water supply equipment allows water to flow into the pressure relief component through the diversion of the electromagnetic three-way valve. When the terminal pressure exceeds the preset value, the external controller will operate the electromagnetic three-way valve to divert the water flow to the diversion port. When the terminal pressure still exceeds the preset value after the water flows through the pressure relief component, the frequency converter will be turned on to reduce the speed of the water pump. The double protection can not only reduce the repeated frequency conversion of the pressure pump group, but also improve the pressure relief effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a terminal pressure-inferred non-negative pressure water supply device proposed by the present invention without the pressure relief component installed;

[0018] Figure 2 This is a schematic structural diagram of a terminal pressure-inferred non-negative pressure water supply device proposed by the present invention after the pressure relief component is installed;

[0019] Figure 3 This is a schematic diagram of the internal structure of a pressure relief pipe of a terminal pressure-inferred non-negative pressure water supply device proposed by the present invention;

[0020] Figure 4This is a pressure relief flow chart of a terminal pressure-inferred non-negative pressure water supply device proposed by the present invention.

[0021] In the figure: 1. Installation base; 2. Flow stabilizing tank; 3. Disinfection assembly; 4. Outlet pipe 1; 5. Pressure pump assembly; 6. Outlet pipe 2; 7. Diversion pipe; 8. Butt joint pipe 1; 9. Solenoid three-way valve; 10. Butt joint pipe 2; 11. Diversion pipe; 12. Pressure relief pipe; 13. Converging pipe; 14. Spiral inner pipe. DETAILED DESCRIPTION

[0022] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this patent.

[0025] In the description of this patent, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "set" should be understood in a broad sense. For example, they can refer to fixed connection or set, detachable connection or set, or integral connection or set. Those skilled in the art will understand the specific meanings of the above terms in this patent based on the specific circumstances.

[0026] Reference Figure 1-4 A terminal pressure-inferred non-negative pressure water supply device includes: a diversion pipe 7. In the traditional installation method, the diversion pipe 7 is directly connected to the user pipeline network for water supply. In this embodiment, a docking pipe 1 8 is provided at the connection port of the diversion pipe 7. The other side of the docking pipe 1 8 is connected to an electromagnetic three-way valve 9. The main flow port of the electromagnetic three-way valve 9 is connected to the user pipeline network, and the diversion port of the electromagnetic three-way valve 9 is connected to the pressure relief component through the docking pipe 2 10. The pressure relief component is then reconnected to the user pipeline network.

[0027] According to this design, the water flow can be prevented from directly entering the user pipeline by reversing the electromagnetic three-way valve 9. The pressure can be reduced in advance by the pressure relief component, and then when the end water pressure is high, the water flow can be directed to the pressure relief component.

[0028] Specifically, such as Figure 2 As shown, the pressure relief assembly includes a diverter pipe 11, a pressure relief pipe 12 and a converging pipe 13. The diverter pipe 11 is directly connected to the docking pipe 2 10, and the pressure relief pipe 12 is connected between the diverter pipe 11 and the converging pipe 13. The converging pipe 13 then directs the water flow into the user pipe network again.

[0029] Furthermore, the diverter pipe 11 reduces the pressure by diverting the introduced water, and the diverted water flows into the pressure relief pipe 12. A spiral inner tube 14 is provided inside the pressure relief pipe 12. The diverter pipe 11 is directly connected to the spiral inner tube 14, and the pressure is reduced by the spiral inner tube 14. When the water flows through the spiral inner tube 14, the direction and speed of the water flow will change due to the bending and rotation of the pipe. This change causes the kinetic energy inside the water flow to be gradually consumed, thereby reducing the speed and pressure of the water flow.

[0030] Furthermore, when the water flows through the diversion pipe 11 and then enters the spiral inner tube 14, its pressure will experience two reductions. First, during the diversion process, the water flow is dispersed into multiple pipes, resulting in a decrease in the water flow pressure in each pipe. Second, in the spiral inner tube 14, the speed and direction of the water flow change, further consuming its kinetic energy and reducing the pressure.

[0031] Specifically, on the user's pipe network, a pressure detection instrument is installed at the terminal water use point. The pressure detection instrument will transmit the real-time detection signal to the external controller, and the external controller will compare the detection signal with the preset value. When the terminal pressure reaches the preset value, the external controller will open the electromagnetic three-way valve 9, and the electromagnetic three-way valve 9 will start to turn, so that the water flows from the main outlet into the diversion outlet, and the pressure is initially relieved through the pressure relief component.

[0032] Furthermore, when the terminal pressure is still higher than the preset value after the water flows through the pressure relief component and lasts for 0 to 10 seconds (according to the actual set value), the external controller will immediately start the inverter operation, and the inverter will reduce the speed of the water pump, which can be used in conjunction with the pressure relief component to provide two guarantees.

[0033] At the same time, when the terminal pressure is lower than the preset value, the external controller can directly start the inverter to increase the speed of the water pump and increase the water pressure.

[0034] In this embodiment, the main structure of the equipment includes a mounting base 1, a stabilizing tank 2, a disinfection component 3, a water outlet pipe 1 4, a pressure pump group 5, a water outlet pipe 2 6, and a diversion pipe 7.

[0035] Among them, the simmering tank 2 and the booster pump group 5 are both fixedly installed above the mounting base 1. The water inlet of the booster pump group 5 is connected to the outlet pipe 1 4 at the bottom of the simmering tank 2 through the disinfection component 3. The outlet pipe 2 6 at the front end of the booster pump group 5 is connected to the diversion pipe 7. When the water supply of the municipal pipeline network is greater than the water consumption of the user, the equipment supplies water at a constant pressure. At this time, a certain amount of pressurized water is stored in the simmering tank 2. When the water consumption of the user increases, the pressure at the connection between the municipal pipeline network and the simmering tank 2 drops. When the pressure drops below the relative pressure 0, a negative pressure is formed in the simmering tank 2. The air inlet valve of the vacuum suppressor on the simmering tank 2 opens, and the atmosphere enters the simmering tank 2. At this time, the simmering tank 2 is equivalent to an open water tank with a free liquid surface. The pressure is the same as that of the atmosphere, and the negative pressure is eliminated.

[0036] Working principle: When using the present invention, the non-negative pressure water supply equipment is provided with a pressure relief component between the guide pipe 7 and the user pipeline network. The water flow can be divided into multiple branches through the diversion pipe 11, and then enter the spiral inner tube 14 inside the pressure relief pipe 12 respectively. The water pressure at the water outlet is reduced by the diversion and the spiral inner tube 14, and the water flow enters the pressure relief component through the steering of the electromagnetic three-way valve 9. When the terminal pressure exceeds the preset value, the external controller will operate the electromagnetic three-way valve 9 to divert the water flow to the diversion port. When the terminal pressure still exceeds the preset value after the water flow passes through the pressure relief component, the frequency converter will be turned on to slow down the water pump. The double protection can reduce the repeated frequency conversion of the boosting pump group 5 and improve the pressure relief effect at the same time.

[0037] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A terminal pressure estimation type non-negative pressure water supply device, comprising: The guide pipe (7) is characterized in that the connecting ports at both ends of the guide pipe (7) are connected to a butt-joint pipe (8), the butt-joint pipe (8) is connected to a butt-joint pipe (10) through a diversion port of an electromagnetic three-way valve (9), and a pressure relief assembly is provided at the other end of the butt-joint pipe (10), which mainly includes a diversion pipe (11), a pressure relief pipe (12) and a converging pipe (13).

2. The terminal pressure estimation type non-negative pressure water supply equipment according to claim 1, characterized in that: The main flow port of the electromagnetic three-way valve (9) is connected to the user pipe network.

3. The terminal pressure estimation type non-negative pressure water supply equipment according to claim 1, characterized in that: The main pipe of the combined pipe (13) is connected to the user pipe network.

4. The terminal pressure estimation type non-negative pressure water supply equipment according to claim 1, characterized in that: The interior of the pressure relief pipe (12) is fixedly connected to a spiral inner pipe (14), and both ends of the spiral inner pipe (14) are respectively connected to the branch pipe of the diversion pipe (11) and the branch pipe of the confluence pipe (13).

5. The terminal pressure estimation type non-negative pressure water supply equipment according to claim 1, characterized in that: include: A mounting base (1) is provided above the mounting base (1), a simmering tank (2) is provided, a water inlet of the simmering tank (2) is connected to a municipal pipe network, and a water outlet pipe (4) at the bottom of the simmering tank (2) is connected to a disinfection assembly (3).

6. The terminal pressure estimation type non-negative pressure water supply equipment according to claim 5, characterized in that: One end of the disinfection assembly (3) is connected to a pressure pump group (5), the water outlet end of the pressure pump group (5) is connected to a second water outlet pipe (6), and the upper portion of the second water outlet pipe (6) is connected to a guide pipe (7).

7. The terminal pressure estimation type non-negative pressure water supply equipment according to claim 1, characterized in that: A pressure detection instrument is installed on the terminal pipeline of the user pipeline network. The pressure detection instrument is connected to the external controller signal, and the external controller is electrically connected to the electromagnetic three-way valve (9).

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