Machine pump cooling water recovery flushing device

Abstract

The utility model belongs to centrifugal pump cooling water pipeline technical field relates to a machine pump cooling water recovery flush device, including the upper water main and the backwater main, the upper water main water inlet end connects the first water source, the upper water main leads out a plurality of backwater branch respectively to be connected to the cooling cavity import of each machine pump, and the cooling cavity export of each machine pump respectively is connected through the backwater branch pipe and is inserted into the backwater main to the downward oblique, is provided with simple flowmeter on the backwater branch pipe of each machine pump, is provided with branch road blow-off pipe respectively on the pipe section before and after simple flowmeter, and the backwater main starting end is provided with ball valve no.

Description

Technical Field

[0001] This utility model belongs to the field of primary water pipeline technology, specifically relating to a pump cooling water recovery and flushing device. Background Technology

[0002] In chemical production processes, centrifugal pumps are used to transport various materials. The pump shaft bearing housing and other parts of the centrifugal pump generate heat, which must be continuously cooled by introducing cooling water.

[0003] Currently, the industry commonly uses fresh water, also known as primary water, for cooling. After completing the heat exchange, the cooling water is directly discharged into ditches, resulting in water waste. Since the primary water is untreated, microorganisms, calcium and magnesium ions, and other suspended impurities in the water easily form biological slime, scale, and sediment as it flows through the cooling chamber due to temperature changes. Over long-term operation, these contaminants accumulate, leading to a reduction in the flow area of ​​the cooling water pipes and even blockages.

[0004] Unblocking pipes requires shutdown and disassembly, disrupting production continuity. Furthermore, the cooling effect decreases due to blockage, potentially causing bearing overheating and even burnout, posing a safety hazard. Therefore, a pump cooling water recovery and flushing device is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a pump cooling water recovery and flushing device, which has the functions of recycling cooling water, online sewage discharge and emergency protection. It solves the problems of water waste caused by the single-use cooling water method in the prior art, as well as the problems of cooling pipe blockage and maintenance difficulties caused by water scale and microbial growth, and bearing burnout due to cooling failure.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: This utility model provides a pump cooling water recovery and flushing device, including a main water supply pipe and a main return water pipe. The inlet end of the main water supply pipe is connected to a primary water source. Multiple return water branches are led out from the main water supply pipe and connected to the cooling chamber inlet of each pump. The cooling chamber outlet of each pump is connected to the main return water pipe by a downward oblique insertion through the return water branch. A simple flow meter is installed on the return water branch of each pump. Branch sewage pipes are installed on the pipe sections before and after the simple flow meter. A ball valve is installed at the beginning of the main return water pipe. A fire hydrant is connected in front of the ball valve. The end of the main return water pipe is set as a water outlet. A ball valve is connected in front of the water outlet. A circulating water pool is set outside the water outlet. A sewage branch is led out from the front of the water outlet. A sewage ball valve is installed on the sewage branch.

[0007] Preferably, the return water branch pipe is connected to the return water main pipe by insertion welding at a downward angle of 45-60°.

[0008] Preferably, the branch sewage pipe is equipped with a branch sewage valve.

[0009] Preferably, the diameter of the main water supply pipe is smaller than that of the main return water pipe, and the elevation of the beginning end of the main return water pipe is higher than that of the end end, forming a height difference.

[0010] Preferably, a liquid level sensor is installed in the circulating water tank.

[0011] Preferably, the fire hose connection is provided with a protective cover at the interface.

[0012] Preferably, the diameter of the return water main pipe is 1.5-2 times that of the supply water main pipe, and the downward slope of the return water main pipe from the beginning to the end is not less than 0.3%.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. This utility model delivers clean primary water to each pump, while collecting the wastewater after heat exchange into the return water main pipe, and recovering the cooling water to the circulating water tank for reuse.

[0015] 2. This utility model has the functions of recycling cooling water, online sewage discharge and emergency protection, which solves the problems of water waste caused by the single use of cooling water in the prior art, as well as the problems of cooling pipe blockage and maintenance difficulties caused by water scale and microbial growth, and bearing burnout due to cooling failure. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of a pump cooling water recovery and flushing device according to one embodiment;

[0018] In the diagram above, 1. Main water supply pipe, 2. Main return water pipe, 3. Return water branch, 4. Pump, 5. Return water branch, 6. Simple flow meter, 7. Branch drain pipe, 8. Ball valve one, 9. Fire hose connection, 10. Water outlet, 11. Ball valve two, 12. Circulating water tank, 13. Drain branch, 14. Drain ball valve, 15. Liquid level sensor, 16. Branch drain valve, 17. Protective cover. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1, such as Figure 1 As shown, a pump cooling water recovery and flushing device includes a main water supply pipe 1 and a return water supply pipe 2. The main water supply pipe 1 is the main pipeline for transporting clean primary cooling water. The main water supply pipe 1 is the water supply "artery" that distributes cooling water to the pumps 4 throughout the production area, ensuring a stable water supply. The main water supply pipe 1 uses pipes of DN50 or smaller, connected to the primary water source and the pipes of each pump 4 via flanges or threads.

[0022] The main water supply pipe 1 is connected to a primary water source at its inlet. Multiple return water branches 3 extend from the main water supply pipe 1 and are connected to the cooling chamber inlets of each pump 4. Each return water branch 3 connects to a single pump 4, enabling independent monitoring and maintenance of each pump 4 without interference. The cooling chamber outlets of each pump 4 are connected to the main return water pipe 2 via return water branch pipes 5, which are angled downwards to facilitate smooth water flow and reduce impact and resistance. Pumps 4 are centrifugal pumps, fluid transport equipment used in chemical production, and require primary water cooling.

[0023] The return water main 2 collects the cooling wastewater after heat exchange by the pump 4. The diameter of the return water main 2 is larger than that of the water supply main 1, preferably using a DN100 pipe diameter. It collects a large flow of return water and reduces fluid resistance. When laying, a certain slope must be maintained from the beginning to the end to facilitate sewage discharge by using gravity to assist the water flow to the end.

[0024] A simple flow meter 6 is installed on the return water branch pipe 5 of each pump 4. The simple flow meter 6 is installed on each return water branch pipe 5 to display the cooling water flow rate of a specific pump 4 in real time and intuitively. The operator can quickly determine whether the cooling of a certain pump 4 is normal through its reading. A decrease in flow rate indicates blockage. A rotor flow meter or a visual glass tube flow meter is selected, which is low-cost, intuitive and reliable. Branch drain pipes 7 are installed on the pipe sections before and after the simple flow meter 6. The branch drain pipes 7 are connected to the return water branch pipe 5 and are located before and after the flow meter. They are used to flush and drain the single return water branch pipe 5, providing the ability to perform online maintenance without stopping the system. When a return water branch pipe 5 is suspected of being blocked, the branch drain pipe 7 can be opened to flush it using system pressure or an external water source without affecting the operation of other pumps 4.

[0025] Ball valve 8 is installed at the beginning of the return water main 2. A fire hose connection 9 is connected before ball valve 8. Ball valve 8, installed at the beginning of the return water main 2, serves as the main isolation valve for the return water system. It is closed during normal operation to isolate the recovery system from the fire emergency system. During maintenance, the initial passage can be completely cut off. Ball valve 8 is a flanged ball valve of the same diameter and pressure rating as the return water main 2. Fire hose connection 9, installed before ball valve 8, is used to connect a quick-connect interface for fire trucks or fire pumps. High-pressure water can be accessed from here to ensure uninterrupted machine cooling and completely eliminate the risk of equipment burnout. A standard fire hose quick-connect interface is used and positioned at an operating height of approximately 1.5 meters for easy connection of fire hoses.

[0026] The return water main 2 is connected to an outlet 10 at its end, with a ball valve 11 preceding it. A circulating water pool 12 is located outside the outlet 10. The main outlet 10 at the end of the return water main 2 is controlled by the ball valve 11 to open and close the connection with the circulating water pool 12. During normal operation, the ball valve 11 is open, allowing the recycled water to flow smoothly into the circulating water pool 12. The circulating water pool 12 collects and stores the recycled cooling water and is an underground reinforced concrete pool. A sewage branch 13 is led out from the outlet 10, and a sewage ball valve 14 is installed on the sewage branch 13. The sewage branch 13 is the sewage outlet at the end of the return water main 2, located before the ball valve 11, and is used to periodically flush and drain the entire return water main 2. During operation, the ball valve 11 is closed, and the sewage ball valve 14 is opened to completely drain the dirt and debris in the pipe into the ditch, preventing pollutants from entering the circulating water pool 12. The diameter of the sewage branch pipe 13 is smaller than that of the return water main pipe 2, and the sewage ball valve 14 is a valve with good sealing performance.

[0027] The return water branch pipe 5 is connected to the return water main pipe 2 by a downward 45-60° insertion weld. This downward 45-60° insertion weld ensures that the fluid in the branch pipe flows into the main pipe at the optimal angle, reducing the impact and energy loss during fluid entry, making the return flow smoother, and lowering the overall system operating resistance. The weld also ensures the connection's strength and sealing, preventing leakage.

[0028] The branch drain pipe 7 is equipped with a branch drain valve 16. The branch drain valve 16 provides an independent drain channel for each return water branch pipe 5, realizing "precise maintenance". When an abnormal flow of a certain pump 4 is detected, the branch can be flushed and drained online without affecting the normal operation of other pumps 4, thus ensuring production continuity.

[0029] The diameter of the main water supply pipe 1 is smaller than that of the main return water pipe 2, and the elevation of the starting end of the main return water pipe 2 is higher than that of the ending end, creating a height difference. The diameter of the main return water pipe 2 is 1.5-2 times that of the main water supply pipe 1, and the downward slope of the main return water pipe 2 from the starting end to the ending end is not less than 0.3%. The larger diameter of the main return water pipe 2 ensures strong collection capacity and prevents congestion caused by insufficient capacity. The slope utilizes gravity to assist fluid flow, which not only saves energy but also helps to flush impurities to the end with the water flow, facilitating centralized sewage discharge.

[0030] A level sensor 15 is installed inside the circulating water tank 12. The level sensor 15 monitors the water storage volume of the circulating water tank 12. A protective cover 17 is installed at the interface of the fire-fighting connector 9. The protective cover 17 protects the fire-fighting interface and prevents dust and foreign objects from clogging the interface or causing thread corrosion.

[0031] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A pump cooling water recovery and flushing device, comprising an inlet water main and a return water main, characterized in that, The main water supply pipe is connected to a primary water source at its inlet end. Multiple return water branches extend from the main water supply pipe and are connected to the cooling chamber inlets of each pump. The cooling chamber outlets of each pump are connected to the main return water pipe by downward-sloping return water branches. A simple flow meter is installed on each pump's return water branch. Branch drain pipes are installed on the pipe sections before and after the simple flow meter. A ball valve is installed at the beginning of the main return water pipe, and a fire hydrant is connected in front of the ball valve. The end of the main return water pipe is set as a water outlet, and a ball valve is connected in front of the water outlet. A circulating water pool is installed outside the water outlet, and a drain branch extends from the front of the water outlet. A drain ball valve is installed on the drain branch.

2. The pump cooling water recovery and flushing device according to claim 1, characterized in that, The return water branch pipe is connected to the return water main pipe by inserting and welding at a downward angle of 45-60°.

3. The pump cooling water recovery and flushing device according to claim 1, characterized in that, The branch sewage pipe is equipped with a branch sewage valve.

4. The pump cooling water recovery and flushing device according to claim 1, characterized in that, The diameter of the main water supply pipe is smaller than that of the main return water pipe, and the elevation of the beginning end of the main return water pipe is higher than that of the end end, forming a height difference.

5. The pump cooling water recovery and flushing device according to claim 1, characterized in that, A liquid level sensor is installed in the circulating water tank.

6. The pump cooling water recovery and flushing device according to claim 1, characterized in that, The fire hose connection is equipped with a protective cover.

7. The pump cooling water recovery and flushing device according to claim 4, characterized in that, The diameter of the return water main pipe is 1.5-2 times that of the supply water main pipe, and the downward slope of the return water main pipe from the beginning to the end is not less than 0.3%.

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