Water hammer protection device of pressurized water supply system

Abstract

The utility model relates to the technical field of water supply system protection devices, in particular to a water hammer protection device of a pressurized water supply system. The device comprises a pressure relief pipeline, one end of the pressure relief pipeline is connected with a water supply main pipe, the other end of the pressure relief pipeline is connected with a pressure pump reservoir, the pressure relief pipeline is provided with an electric control valve and a pressure relief valve, the water supply main pipe is provided with a teletransmission pressure gauge and a flow control instrument, and a pressure pump is provided with a magnetic coupling device. The electric control valve, the teletransmission pressure gauge, the flow control instrument and the magnetic coupling device are all connected with the upper computer. According to the water hammer protection device, improvement and upgrading of an existing water hammer protection device are completed, and the technical problems that in the prior art, due to the fact that the water hammer protection device is poor in effect of eliminating the water hammer phenomenon of complex terrains and aged pipelines, the water hammer phenomenon is aggravated, and pipeline damage is aggravated are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply system protection devices, in particular to a water hammer protection device for a pressurized water supply system. Background Technique

[0002] Water hammer, also known as water shock, is a pressure fluctuation phenomenon caused by a sudden change in flow velocity in a pressure pipeline. The water hammer phenomenon not only emits loud noises and strong vibrations but may also cause serious consequences such as pipeline rupture, valve damage, and pump failure.

[0003] Regarding the water hammer phenomenon, a patent document with the authorization announcement number CN217923859U discloses a new type of water hammer protection device for a pressurized water supply project. The device includes a water replenishing tank, which is connected to the water conveyance pipeline through two connecting pipes. An air valve is also provided on the water replenishing tank. When in use, a pressure difference is formed by the head loss generated during water flow, and part of the water in the water conveyance pipeline flows into the water replenishing tank through one connecting pipe, and then the water in the water replenishing tank flows back into the water conveyance pipeline through the other connecting pipe to ensure the automatic update of the water body in the water replenishing tank, thereby ensuring the water quality of the water conveyance pipeline. The air valve is used to achieve air intake and exhaust in the water replenishing tank to generate an air cushion effect, making the water hammer fluctuations in the water conveyance pipeline gradually stable.

[0004] It can be seen that the above device mainly makes the water hammer fluctuations in the water conveyance pipeline gradually tend to be stable by the air valve for air intake and exhaust in the water replenishing tank, and during the process of eliminating the water hammer phenomenon, water is continuously conveyed between the water conveyance pipeline and the water replenishing tank. However, for complex terrains, the air valve cannot quickly discharge the air in the pipelines with complex terrains, easily causing air to accumulate in the pipelines, forming air resistance, and further exacerbating the water hammer phenomenon. For water conveyance pipelines with aging and brittle pipelines, the pipelines themselves are already in a relatively fragile state, with poor pressure-bearing capacity and anti-impact ability. Even if the water replenishing tank can absorb part of the water hammer energy, the water conveyance pipeline may still not be able to withstand the remaining water hammer impact, resulting in pipeline rupture or more serious damage. Summary of the Utility Model

[0005] The utility model provides a water hammer protection device for a pressurized water supply system to solve the technical problem that the existing water hammer protection device has a poor effect in eliminating water hammer phenomena in complex terrains and aging pipelines, resulting in the exacerbation of water hammer phenomena and pipeline damage.

[0006] To solve the above problems, the water hammer protection device for a pressurized water supply system provided by the utility model adopts the following technical solutions:

[0007] A water hammer protection device for a pressurized water supply system, comprising a pressure relief pipeline. One end of the pressure relief pipeline is connected to the main water supply pipe, and the other end is connected to the pressurized pump reservoir. An electric control valve and a pressure relief valve are arranged on the pressure relief pipeline. A remote pressure gauge and a flow control instrument are arranged on the main water supply pipe. The pressurized pump is provided with a magnetic coupling device. The electric control valve, the remote pressure gauge, the flow control instrument and the magnetic coupling device are all connected to the upper computer.

[0008] The beneficial effects of the water hammer protection device for the pressurized water supply system provided by the present utility model are as follows:

[0009] 1. By arranging a remote pressure gauge and a flow control instrument on the main water supply pipe, the pressure and flow rate in the main water supply pipe can be monitored in real time;

[0010] 2. A pressure relief pipeline is added between the main water supply pipe and the pressurized pump reservoir, and an electric control valve and a pressure relief valve are arranged on the pressure relief pipeline. The response speed and pressure control ability of the pressure relief valve are superior to those of the air valve. When the water supply system is abnormal, the pressure in the pipeline can be quickly released, and the water in the main water supply pipe can be drained back to the pressurized pump reservoir through the pressure relief pipeline;

[0011] 3. A magnetic coupling device is added to the pressurized pump, and the electric control valve, the remote pressure gauge, the flow control instrument and the magnetic coupling device are connected to the upper computer. The information monitored by the remote pressure gauge and the flow control instrument can be received through the upper computer. When the pressure rises or drops abnormally or the flow rate changes suddenly, the rotation speed of the magnetic coupling device can be reduced through the upper computer to gradually reduce the water supply volume until the pressurized pump stops running. Moreover, the electric control valve on the pressure relief pipeline can be controlled through the upper computer to open, and the pressure relief valve is synchronously opened to quickly release the pressure in the pipeline and drain the water in the main water supply pipe back to the pressurized pump reservoir through the pressure relief pipeline, thereby eliminating the water hammer phenomenon.

[0012] Through the above settings, the present utility model effectively solves the technical problem in the prior art that the water hammer protection device has a poor effect in eliminating water hammer phenomena in complex terrains and aging pipelines, resulting in the aggravation of water hammer phenomena and pipeline damage.

[0013] Further, electric control valves are arranged on both the main water supply pipe and the pressurized pump, and the electric control valves are connected to the upper computer.

[0014] Further, a multi-functional check valve is arranged at the water outlet of the pressurized pump.

[0015] Further, the flow monitoring instrument is an electromagnetic flow monitoring instrument.

[0016] Further, it further includes an audible and visual alarm, which is connected to the upper computer for giving an alarm under the control of the upper computer.

[0017] Further, the number of the pressure pumps is three, and the three pressure pumps are arranged in parallel.

[0018] Further, the number of the main water supply pipes is two.

[0019] Further, the number of the pressure pump reservoirs is two. Description of the Drawings

[0020] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understandable. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0021] Figure 1 It is a schematic application structure diagram of the water hammer protection device for the pressurized water supply system provided by the present utility model.

[0022] Description of the Reference Numerals:

[0023] 1. Pressure relief pipeline; 2. Electric control valve; 3. Pressure relief valve; 4. Remote pressure gauge; 5. Electromagnetic flow control instrument; 6. First pressure pump reservoir; 7. Second pressure pump reservoir; 8. First main water supply pipe; 9. Second main water supply pipe; 10. First pressure pump; 11. Second pressure pump; 12. Third pressure pump; 13. Host computer; 14. Connecting pipeline; 15. Multi-functional check valve. Detailed Embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Those skilled in the art should know that the following described embodiments are a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present utility model.

[0025] It should be noted that the main concept of the water hammer protection device for the pressurized water supply system provided by the present utility model lies in: adding a pressure relief pipeline between the water supply main pipe and the pressurized pump reservoir, setting an electric control valve and a pressure relief valve on the pressure relief pipeline, setting a remote pressure gauge and a flow control instrument on the water supply main pipe, adding a magnetic coupling device on the pressurized pump, connecting the electric control valve, the remote pressure gauge, the flow control instrument and the magnetic coupling device to the upper computer, and being able to monitor the pressure and water flow in the pipeline in real time through the remote pressure gauge and the flow control instrument, and transmitting the detected information to the upper computer. The upper computer judges whether the pressure and flow data are normal. When abnormal, it timely controls the electric control valve on the pressure relief pipeline to open and synchronously opens the pressure relief valve to quickly release the pressure in the pipeline and discharge the water in the water supply main pipe back to the pressurized pump reservoir through the pressure relief pipeline, thereby eliminating the water hammer phenomenon.

[0026] After introducing the basic principle of the present utility model, the various non-restrictive embodiments of the present utility model will be specifically introduced below. The number of any element in the drawings is for illustration rather than limitation, and any naming is only for distinction and does not have any restrictive meaning.

[0027] Next, with reference to several representative embodiments of the present utility model, the principle and spirit of the present utility model will be elaborated in detail.

[0028] Embodiment 1 of the water hammer protection device for the pressurized water supply system provided by the present utility model:

[0029] As Figure 1 shown, the water hammer protection device for the pressurized water supply system includes a pressure relief pipeline 1. The water inlet end of the pressure relief pipeline 1 is connected to the water supply main pipe, and its water outlet end is connected to the pressurized pump reservoir. An electric control valve 2 and a pressure relief valve 3 are arranged in parallel on the pressure relief pipeline 1. A remote pressure gauge 4 and an electromagnetic flow control instrument 5 are arranged on the water supply main pipe. The pressurized pump is provided with a magnetic coupling device (not shown in the figure).

[0030] Among them, the pressurized pump reservoir includes a pressurized pump reservoir one 6 and a pressurized pump reservoir two 7 arranged in sequence from left to right. The capacity of each pressurized pump reservoir is 1000m 3 , the water supply main pipe includes a water supply main pipe one 8 and a water supply main pipe two 9 arranged in sequence from left to right. The water supply main pipe one 8 and the water supply main pipe two 9 are respectively connected with a pressurized pump one 10 and a pressurized pump three 12. The other ends of the pressurized pump one 10 and the pressurized pump three 12 are respectively connected to the pressurized pump reservoir one 6 and the pressurized pump reservoir two 7. The water supply main pipe one 8 and the water supply main pipe two 9 are also jointly connected with a pressurized pump two 11. The other end of the pressurized pump two 11 is respectively connected to the pressurized pump reservoir one 6 and the pressurized pump reservoir two 7 through two connecting pipes 14.

[0031] It should be noted that the main water supply pipe 1 and the second main water supply pipe 2 are both DN600 pipes; an electric control valve 2 is connected to each of the main water supply pipe 1, the second main water supply pipe 2, the first booster pump 3, the second booster pump 4, and the third booster pump 5; electromagnetic flow control instruments 6 and remote pressure gauges 5 are provided on both the main water supply pipe 1 and the second main water supply pipe 2; the electric control valve 2, the pressure relief valve 3, the remote pressure gauge 5, the electromagnetic flow control instrument 6, and the magnetic coupling device are all connected to the upper computer 7, and the upper computer 7 is used to receive the signals of the remote pressure gauge 5 and the electromagnetic flow control instrument 6, and control the working states of the electric control valve 2 and the magnetic coupling device according to the received signals.

[0032] In addition, multi-functional check valves 8 are provided at the water outlets of the first booster pump 3, the second booster pump 4, and the third booster pump 5, and the upper computer 7 is also connected to an audible and visual alarm (not shown in the figure). When the upper computer 7 receives information about abnormal increase, decrease in pressure or sudden change in flow rate, it controls the audible and visual alarm to send an alarm signal.

[0033] The working principle of the water hammer protection device for the pressurized water supply system provided by the present utility model is as follows: when the water supply system is working, the remote pressure gauge 5 and the electromagnetic flow control instrument 6 monitor the pressure and flow rate in the main water supply pipe 1 and the second main water supply pipe 2 in real time, and transmit the monitored information to the upper computer 7 in real time. When the upper computer 7 receives information about abnormal increase, decrease in pressure or sudden change in flow rate, it controls the audible and visual alarm to send an alarm signal, and at the same time controls the magnetic coupler to reduce the rotation speed, gradually reduce the water supply volume, then stop the operation of the booster pump, and then control the electric control valve 2 on the pressure relief pipeline 1 to open, so as to drain the water in the main water supply pipe 1 and the second main water supply pipe 2 back into the booster pump storage tank; after the staff receives the alarm signal of the audible and visual alarm, they close the multi-functional check valve 8, and at the same time open the pressure relief valve 3 to eliminate the water hammer hazard caused by sudden pump stop.

[0034] Embodiment 2 of the water hammer protection device for the pressurized water supply system provided by the present utility model:

[0035] The main difference from Embodiment 1 is that:

[0036] In Embodiment 1, the number of booster pumps is three, and the number of booster pump storage tanks is two.

[0037] In this embodiment, the number of booster pumps and booster pump storage tanks is determined according to the specific usage conditions.

[0038] Embodiment 3 of the water hammer protection device for the pressurized water supply system provided by the present utility model:

[0039] The main difference from Embodiment 1 is that:

[0040] In Embodiment 1, both the first water supply main pipe and the second water supply main pipe are DN600 pipes.

[0041] In this embodiment, the size models of the first water supply main pipe and the second water supply main pipe are determined according to specific usage conditions.

[0042] Based on the above description of this specification, those skilled in the art can also understand the following terms used, such as the terms indicating orientation or positional relationship, such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings of this specification. It is only for the purpose of facilitating the description of the solution of the present invention and simplifying the description, rather than explicitly or implicitly indicating that the device or component involved must have the specific orientation, be constructed and operated in the specific orientation. Therefore, the above terms of orientation or positional relationship cannot be understood or interpreted as a limitation to the solution of the present invention.

[0043] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically defined.

Claims

1. A water hammer protection device for a pressurized water supply system, characterized in that, It includes a pressure relief pipeline. One end of the pressure relief pipeline is connected to the main water supply pipe, and the other end is connected to the pressurized pump reservoir. An electric control valve and a pressure relief valve are provided on the pressure relief pipeline. A remote pressure gauge and a flow control instrument are provided on the main water supply pipe. The pressurized pump is equipped with a magnetic coupling device. The electric control valve, the remote pressure gauge, the flow control instrument, and the magnetic coupling device are all connected to the upper computer.

2. The water hammer protection device for a pressurized water supply system according to claim 1, characterized in that, Electric control valves are provided on both the main water supply pipe and the pressurized pump, and the electric control valves are connected to the upper computer.

3. The water hammer protection device for a pressurized water supply system according to claim 1 or 2, characterized in that, A multi-functional check valve is provided at the water outlet of the pressurized pump.

4. The water hammer protection device for a pressurized water supply system according to claim 1 or 2, characterized in that, The flow control instrument is an electromagnetic flow monitoring instrument.

5. The water hammer protection device for a pressurized water supply system according to claim 1 or 2, characterized in that It further includes an audible and visual alarm, which is connected to the upper computer for issuing an alarm under the control of the upper computer.

6. The water hammer protection device for a pressurized water supply system according to claim 1 or 2, characterized in that, The number of the pressurized pumps is three, and the three pressurized pumps are arranged in parallel.

7. The water hammer protection device for a pressurized water supply system according to claim 1 or 2, characterized in that, The number of the main water supply pipes is two.

8. The water hammer protection device for a pressurized water supply system according to claim 7, wherein The number of the pressurized pump reservoirs is two.

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