Double-tank type non-negative pressure water supply pump station

Abstract

An embodiment of the utility model provides a double-tank type non-negative pressure water supply pump station, which relates to the technical field of water supply pump stations and comprises an incoming water adjusting tank, a water outlet position of the incoming water adjusting tank is connected with a water inlet header pipe, one side of the water inlet header pipe is connected with a water outlet header pipe mounted at the other end of the water inlet header pipe through a water supply pipeline, and a bidirectional compensator is arranged at the upper end of the water outlet header pipe. The whole water supply system is provided with an incoming water adjusting tank and a water supply adjusting harmonic tank, a pressure detection device is installed in the water supply system and used for monitoring the pressure of a municipal pipe network and a user pipe network, and according to the difference between the detected pressure and the set pressure, the equipment is made to operate by reducing or increasing the frequency of a frequency converter. While the pressure of a municipal pipe network is fully utilized, the stability of the pressure of a user side is ensured, the safety of equipment is ensured, and the safety and the stability of the water supply equipment are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply pumping stations, in particular to a double-tank non-negative pressure water supply pumping station. Background Art

[0002] A pumping station is a device and project that can provide hydraulic power and pneumatic power with a certain pressure and flow rate, called pumps and pumping station projects. The general term for the intake, outlet, pump house and other buildings of a drainage and irrigation pumping station. It is one of the more important facilities in the water supply system. With the acceleration of the urbanization process and the improvement of the requirements for the quality of life, the demand for an efficient, energy-saving and stable water supply system is increasing day by day.

[0003] In the traditional water supply system, the water hammer phenomenon (i.e., the pressure fluctuation in the pipeline caused by the sudden stop or start of the water flow) is a common problem, which may cause damage to the pipeline system and affect the safety and stability of the system. The traditional solutions often rely on single-tank designs or simple voltage stabilization measures, and these measures have limited effects in dealing with instantaneous high-pressure fluctuations. Content of the Utility Model

[0004] The purpose of the utility model is to provide a double-tank non-negative pressure water supply pumping station, which can avoid the problems that the traditional solutions often rely on single-tank designs or simple voltage stabilization measures, and these measures have limited effects in dealing with instantaneous high-pressure fluctuations.

[0005] The utility model provides a double-tank non-negative pressure water supply pumping station, including:

[0006] A raw water regulating tank, the water outlet position of the raw water regulating tank is connected to the intake main pipe, one side of the intake main pipe is connected to the outlet main pipe installed at the other end through a water supply pipeline, a two-way compensator is arranged at the upper end of the outlet main pipe, and a water supply regulating harmonic tank is arranged on one side of the two-way compensator.

[0007] Preferably, a superpressure relief device is arranged on one side of the outlet main pipe, and an isolation valve is installed in the pipeline of the superpressure relief device.

[0008] Preferably, a water inlet is arranged at the upper end of the raw water regulating tank.

[0009] Preferably, a delivery pump is installed at the upper end of the water supply pipeline, reducing pipes are arranged on both sides of the delivery pump, an expansion joint is arranged at one end of the reducing pipe, and stop valves are arranged on both sides of the expansion joint.

[0010] Preferably, a silencing check valve is arranged at the expansion joint at the end of the water supply pipeline at one end of the outlet main pipe and in the middle of the reducing pipe.

[0011] Preferably, a pre-opening pressure relief pipeline is installed on one side of the bidirectional compensator and the water supply regulation harmonic tank. The pre-opening pressure relief pipeline is respectively communicated with the bidirectional compensator and the water supply regulation harmonic tank. A manual flow valve is arranged at the end of the pre-opening pressure relief pipeline, and an automatic flow valve is arranged on one side of the manual flow valve.

[0012] Preferably, the upper pipeline of the water inlet main pipe is connected to the pre-opening pressure relief pipeline, and the connection is made outside the connection between the water supply regulation harmonic tank and the pre-opening pressure relief pipeline. An electromagnetic pressure reducing valve is arranged at the upper end of the water supply regulation harmonic tank.

[0013] A double-tank non-negative pressure water supply pumping station provided by an embodiment of the present invention greatly weakens the pressure rise generated by water hammer through a water inlet regulation tank, a water supply regulation harmonic tank, a bidirectional compensator, an overpressure relief device, a pre-opening pressure relief pipeline, etc. The entire water supply system is equipped with a water inlet regulation tank and a water supply regulation harmonic tank. A pressure detection device is installed in the water supply system to monitor the pressures of the municipal water supply network and the user water supply network. According to the difference between the detected pressure and the set pressure, the equipment operates by reducing or increasing the frequency of the frequency converter, etc. While making full use of the pressure of the municipal water supply network, it ensures the stability of the pressure at the user end and the safety of the equipment, and greatly improves the safety and stability of the water supply equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0015] Figure 1 It is a front body structure schematic diagram of an embodiment of the present invention.

[0016] Figure 2 It is an overall structure schematic diagram of an embodiment of the present invention.

[0017] Figure 3 It is a water supply pipeline structure schematic diagram of an embodiment of the present invention.

[0018] Figure 4 It is a first splicing member structure schematic diagram of an embodiment of the present invention.

[0019] Figure 5 It is a telescopic card member structure schematic diagram of an embodiment of the present invention.

[0020] Description of the Drawings: 100, incoming water regulating tank; 110, water inlet; 200, water supply regulating harmonic tank; 300, main incoming water pipe; 400, main outgoing water pipe; 500, water supply pipe; 510, stop valve; 520, expansion joint; 530, reducing short pipe; 540, delivery pump; 550, silencing check valve; 600, two-way compensator; 700, overpressure relief device; 800, pre-opening relief pipe; 810, manual flow valve; 820, automatic flow valve; 830, electromagnetic pressure reducing valve. Detailed Embodiments

[0021] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0022] In the description of the embodiments of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "length", "vertical", "horizontal", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present invention.

[0023] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0024] In the embodiments of the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0025] The following disclosure provides many different embodiments or examples for implementing different structures of the embodiments of the present utility model. To simplify the disclosure of the embodiments of the present utility model, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the embodiments of the present utility model. In addition, the embodiments of the present utility model may repeat reference numerals and / or reference letters in different examples. This repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0026] To better understand the purpose, structure, and function of the present utility model, the following further describes in detail a double-tank non-negative pressure water supply pumping station of the present utility model with reference to the accompanying drawings.

[0027] As Figures 1 - 5 shown, the embodiments of the present utility model provide a double-tank non-negative pressure water supply pumping station, including a water intake regulating tank 100 for serving as a pressure stabilizing buffer zone. An inlet 110 is provided at the upper end of the water intake regulating tank 100 for connecting to a water supply pipeline. The water outlet position of the water intake regulating tank 100 is connected to a main inlet pipe 300. One side of the main inlet pipe 300 is connected to a main outlet pipe 400 installed at the other end through a water supply pipeline 500. A two-way compensator 600 is provided at the upper end of the main outlet pipe 400 for absorbing axial, lateral, and angular displacements in the pipeline system and compensating for pipeline expansion caused by temperature changes or mechanical movements. A water supply regulating harmonic tank 200 for absorbing the water hammer effect caused by the start or stop of the pump is provided on one side of the two-way compensator 600.

[0028] An overpressure relief device 700 is provided on one side of the main outlet pipe 400 for releasing pressure when the pressure exceeds the safety limit value, and can protect the system from excessive pressure damage in a water hammer event. An isolation valve can be installed in the pipeline of the overpressure relief device 700 for isolating the pipeline.

[0029] A pre-opening relief pipeline 800 is installed on one side of the two-way compensator 600 and the water supply regulating harmonic tank 200. The pre-opening relief pipeline 800 is respectively communicated with the two-way compensator 600 and the water supply regulating harmonic tank 200. A manual flow valve 810 for controlling the pipeline flow is provided at the end of the pre-opening relief pipeline 800. An automatic flow valve 820 for assisting in controlling the flow is provided on one side of the manual flow valve 810. Under normal conditions, the manual flow valve 810 is in an open state.

[0030] The upper pipe of the main inlet pipe 300 is connected to the pre-opening pressure relief pipe 800. The connection is made outside the connection between the water supply regulating harmonic tank 200 and the pre-opening pressure relief pipe 800. An electromagnetic pressure reducing valve 830 is provided at the upper end of the water supply regulating harmonic tank 200. When an instantaneous high pressure caused by water hammer is detected, the electromagnetic pressure reducing valve 830 is activated to open and allow a part of the water flow through to reduce the pressure peak.

[0031] During normal water supply, the municipal water first passes through the incoming water regulating tank 100 for pressure stabilization, then is pressurized by the water supply pipe 500 and supplied to users. At the same time, the high-pressure water after pressurization is stored in the water supply regulating harmonic tank 200 through the two-way compensator 600.

[0032] When the water supply is abnormal, due to the large water supply volume of the pump station and the long lower water supply pipe 500, when a sudden power outage or abnormal pump shutdown occurs, a large water hammer effect will be generated. At this time, the equipment greatly weakens the pressure rise caused by water hammer through the incoming water regulating tank 100, the water supply regulating harmonic tank 200, the two-way compensator 600, the overpressure relief device 700, the pre-opening pressure relief pipe 800, etc. The whole water supply system is equipped with the incoming water regulating tank 100 and the water supply regulating harmonic tank 200. A pressure detection device is installed in the water supply system to monitor the pressures of the municipal pipe network and the user pipe network. According to the difference between the detected pressure and the set pressure, the equipment operates by reducing or increasing the frequency of the frequency converter, etc. While making full use of the pressure of the municipal pipe network, it ensures the stability of the pressure at the user end and the safety of the equipment, greatly improving the safety and stability of the water supply equipment.

[0033] A delivery pump 540 for pressurizing the incoming water is installed at the upper end of the water supply pipe 500. Variable diameter short pipes 530 for flow conversion are provided on both sides of the delivery pump 540. An expansion joint 520 for buffering the pipeline vibration is provided at one end of the variable diameter short pipe 530. Shut-off valves 510 for shutting off the water supply pipe 500 are provided on both sides of the expansion joint 520 to control the water saving of the incoming water of the water supply pipe 500, adjust the flow rate, and at the same time set the expansion joint 520 to buffer the pipeline water cut vibration and protect the pipeline safety.

[0034] A silencing check valve 550 for protecting pipeline equipment is provided at the expansion joint 520 at the end of the water supply pipe 500 at one end of the main outlet pipe 400 and in the middle of the variable diameter short pipe 530 to prevent the water supply from flowing back and affecting the equipment safety.

[0035] Working principle of a double-tank non-negative pressure water supply pumping station: When water supply is abnormal, due to the large water supply volume of the pumping station and the long lower water supply pipeline 500, when sudden power failure or abnormal pump stop occurs, a large water hammer effect will be generated. At this time, the equipment greatly weakens the pressure rise caused by the water hammer through the incoming water regulating tank 100, the water supply regulating harmonic tank 200, the two-way compensator 600, the overpressure relief device 700, the pre-opening relief pipeline 800, etc. The entire water supply system is equipped with the incoming water regulating tank 100 and the water supply regulating harmonic tank 200. A pressure detection device is installed in the water supply system to monitor the pressures of the municipal water supply network and the user water supply network. According to the difference between the detected pressure and the set pressure, the equipment operates by reducing or increasing the frequency of the frequency converter, etc. While making full use of the pressure of the municipal water supply network, it ensures the stability of the pressure at the user end and the safety of the equipment, greatly improving the safety and stability of the water supply equipment.

[0036] It can be understood that the present utility model is described through some embodiments. As is known to those skilled in the art, without departing from the spirit and scope of the present utility model, various changes or equivalent replacements can be made to these features and embodiments. Additionally, under the teaching of the present utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present utility model.

Claims

1. A double-tank non-negative pressure water supply pumping station, characterized in that, include: An incoming water regulating tank (100) is provided, wherein the water outlet position of the incoming water regulating tank (100) is connected to a water inlet main pipe (300), one side of the water inlet main pipe (300) is connected to a water outlet main pipe (400) installed at the other end via a water supply pipe (500), a bidirectional compensator (600) is provided at the upper end of the water outlet main pipe (400), and a water supply regulating harmonic tank (200) is provided on one side of the bidirectional compensator (600).

2. The dual-tank non-negative pressure water supply pumping station according to claim 1, wherein, An overpressure relief device (700) is provided on one side of the water outlet main pipe (400), and an isolation valve is installed in the pipeline of the overpressure relief device (700).

3. The dual-tank non-negative pressure water supply pumping station according to claim 2, wherein, The upper end of the incoming water regulating tank (100) is provided with a water inlet (110).

4. The dual-tank non-negative pressure water supply pumping station according to claim 3, characterized in that, A delivery pump (540) is installed at the upper end of the water supply pipe (500), and short reducing pipes (530) are provided on both sides of the delivery pump (540). An expansion joint (520) is provided at one end of the expansion joint (520), and stop valves (510) are provided on both sides of the expansion joint (520).

5. A double-tank non-negative pressure water supply pump station according to claim 4, characterized in that: A silencer check valve (550) is provided at the middle of the expansion joint (520) at the end of the water supply pipe (500) and the reducing short pipe (530) at one end of the water outlet main pipe (400).

6. A double-tank non-negative pressure water supply pumping station according to claim 5, characterized in that, A pre-opened pressure relief pipe (800) is installed on one side of the bidirectional compensator (600) and the water supply regulating harmonic tank (200), and the pre-opened pressure relief pipe (800) is respectively connected to the bidirectional compensator (600) and the water supply regulating harmonic tank (200). A manual flow valve (810) is provided at the end of the pre-opened pressure relief pipe (800), and an automatic flow valve (820) is provided on one side of the manual flow valve (810).

7. A double-tank non-negative pressure water supply pump station according to claim 6, characterized in that: The upper end of the water inlet main pipe (300) is connected to the pre-opened pressure relief pipe (800), and the connection is provided outside the connection between the water supply regulating harmonic tank (200) and the pre-opened pressure relief pipe (800). The upper end of the water supply regulating harmonic tank (200) is provided with an electromagnetic pressure reducing valve (830).

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