Hydraulic station for flushing large-diameter pipelines

Abstract

This utility model discloses a hydraulic station for flushing large-diameter pipelines, including an oil tank, an electrical control box, a flushing pump unit, and a return oil filter device. The electrical control box is installed on the oil tank, and the flushing pump unit is electrically connected to the electrical control box. The flushing pump unit has a detachable structure and includes several branches. The oil inlet of each branch is connected to the oil tank, and the oil outlet of each branch is connected to a valve block. The oil outlet of the valve block is connected to the oil inlet of the flushing pipeline. The return oil filter device is an independent filter unit. The oil inlet of the return oil filter device is connected to the oil return port of the flushing pipeline, and the oil outlet is connected to the oil tank through its own pipeline. Each branch of the flushing pump unit is equipped with a butterfly valve, a vibration damper, a pump unit, a check valve, and a first ball valve in sequence from the oil inlet to the oil outlet. The pump unit is a screw pump. This utility model allows for the selection of the number of pump units to be opened according to the required diameter of the flushing pipeline, achieving the best flushing effect. It is convenient, fast, and energy-saving.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic station technology, and in particular relates to a hydraulic station for flushing large-diameter pipelines. Background Technology

[0002] Many high-precision proportional valves are installed on the control system of large hydraulic presses. The proportional valves have very high requirements for the precision of the hydraulic oil in the hydraulic system. Therefore, after the equipment is installed, the hydraulic pipelines on the equipment need to be circulated and flushed. Only when the precision level of the hydraulic oil is qualified after the pipeline is circulated and flushed can the equipment use requirements be met.

[0003] In the hydraulic system of large hydraulic presses, in order to meet the needs of large tonnage pressure and rapid start-stop functions of hydraulic presses, some pipelines in the equipment have a diameter of more than 300mm, and the maximum diameter can reach 630mm. To flush these large diameter pipelines to ensure that their cleanliness meets the requirements for use, a flushing hydraulic station with large flow, large capacity and easy mobility is required. At present, the flushing equipment in the factory cannot meet the requirements for pipeline flushing.

[0004] In addition, most existing flushing hydraulic stations use gear pumps, which are noisy, have a high failure rate, and a long service life. Furthermore, the entire pump unit and oil tank are integrated into one structure, making disassembly, maintenance, and transportation inconvenient. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model proposes a hydraulic station for flushing large-diameter pipelines. This hydraulic station solves the problems of long flushing time, high flushing oil temperature, unstable flushing pressure, inconvenient disassembly of the entire pump set, and the gear pump used in large hydraulic press equipment.

[0006] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A hydraulic station for flushing large-diameter pipelines includes an oil tank, an electrical control box, a flushing pump assembly, and a return oil filter device. The electrical control box is mounted on the oil tank, and the flushing pump assembly is electrically connected to the electrical control box. The flushing pump assembly has a detachable structure and includes several identical branches. The oil inlet of each branch is connected to the oil tank, and the oil outlet of each branch is connected to a common valve block. The oil outlet of the valve block is connected to the oil inlet of the flushing pipeline. The return oil filter device is an independent filter unit. The oil inlet of the return oil filter device is connected to the return oil outlet of the flushing pipeline, and the oil outlet is connected to the oil tank through its own pipeline. Each branch of the flushing pump unit is equipped with a butterfly valve, a vibration damper, a pump unit, a check valve, and a first ball valve in sequence from the oil inlet to the oil outlet. The pump unit is a screw pump.

[0007] Furthermore, the pump unit is connected in parallel with an overflow valve, and a first shut-off valve and a first shock-resistant pressure gauge are provided between the check valve and the first ball valve.

[0008] Furthermore, the valve block is equipped with a drain ball valve, a safety valve, and a return oil pipe. A second shut-off valve and a second shock-resistant pressure gauge are provided between the drain ball valve and the safety valve. A second ball valve is provided on the return oil pipe.

[0009] Furthermore, the bottom of the oil tank is equipped with two drain ball valves, the side of the oil tank is equipped with a level gauge and a temperature sensor, the top of the oil tank is equipped with two air filters and a new oil inlet, and the pipeline of the new oil inlet is equipped with a flange ball valve.

[0010] Furthermore, the oil return filter device has a built-in alarm function.

[0011] Furthermore, the fuel tank has a volume of 20 cubic meters.

[0012] Compared with the prior art, the hydraulic station for flushing large-diameter pipelines described in this utility model has the following advantages: 1. The hydraulic station for flushing described in this utility model allows for the selection of the number of pump units to be activated based on the required flushing pipeline diameter, achieving the best flushing effect. It is convenient, fast, and energy-saving. The flushing pump unit and oil tank adopt a detachable structure, making disassembly and maintenance convenient and easy to transport. Furthermore, the pump unit uses a screw pump, which has high volumetric efficiency, low mechanical vibration, low noise, high and stable pressure, uniform flow, smooth operation, and long service life, reducing maintenance costs and saving energy.

[0013] 2. The oil return filter device of this utility model is an independent unit, which can withstand high pressure and operate stably. It is convenient to transport and ensures the cleanliness of the pipeline. Attached Figure Description

[0014] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1 A schematic diagram of the structure of a hydraulic station for flushing large-diameter pipelines provided in an embodiment of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Oil tank; 2. Drain ball valve; 3. Level gauge; 4. Air filter; 5. Electrical control box; 6. Temperature sensor; 7. Butterfly valve; 8. Vibration isolator; 9. Screw pump; 10. Overflow valve; 11. Check valve; 12. First ball valve; 13. Drain ball valve; 14. Second ball valve; 15. Safety valve; 16. Flanged ball valve; 17. Return oil filter device; 18. Second shut-off valve; 19. Second shock-resistant pressure gauge; 20. First shut-off valve; 21. First shock-resistant pressure gauge; 22. Valve block; 23. Return oil pipe; 30. Flushing pump set. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments and accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0017] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] like Figure 1As shown, a hydraulic station for flushing large-diameter pipelines includes an oil tank 1, an electrical control box 5, a flushing pump assembly 30, a valve block 22, and a return oil filter device 17. The electrical control box 5 is installed on the oil tank 1, and the flushing pump assembly 30 is electrically connected to the electrical control box 5. The flushing pump assembly 30 has a detachable structure and includes several identical sets of branches. In this embodiment, three sets of branches are provided. The oil suction port of each branch is connected to the oil tank 1, and the oil outlet is connected to the valve block 22. The oil discharge port of the valve block 22 is connected to the oil inlet of the flushing pipeline. The return oil filter device 17 is an independent filter unit that is placed on the ground during use. The oil inlet of the return oil filter device 17 is provided with a flange that connects to the return oil port of the flushing pipeline, and the oil outlet is connected to the oil tank 1 through its own pipeline.

[0021] Each branch of the flushing pump set 30 is equipped with a butterfly valve 7, a vibration damper 8, a pump unit 9, a check valve 11, and a first ball valve 12 in sequence from the oil inlet to the oil outlet. The butterfly valve 7 can quickly cut off or connect the oil circuit. The pump unit 9 is a screw pump with high volumetric efficiency, low mechanical vibration, low noise, high and stable pressure, uniform flow, smooth operation, long service life, reduced maintenance costs, and energy saving.

[0022] In a preferred embodiment, the pump unit is connected in parallel with an overflow valve 10, which automatically opens when the system pressure exceeds the set value to overflow excess flow back to the oil tank, preventing damage to the pump unit or pipeline due to overpressure and ensuring system safety. A first shut-off valve 20 and a first shock-resistant pressure gauge 21 are provided between the check valve 11 and the first ball valve 12. The first shock-resistant pressure gauge 21 monitors the branch pressure in real time. The first shut-off valve 20 and the ball valve 12 form a double shut-off, which facilitates maintenance.

[0023] In a preferred embodiment, the oil tank 1 has a volume of 20 cubic meters. Two oil drain ball valves 2 are provided at the bottom of the oil tank 1. A level gauge 3 and a temperature sensor 6 are provided on the side of the oil tank 1. An air filter 4 and an electrical control box 5 are provided on the top of the oil tank 1. A new oil inlet is also provided on the top of the oil tank, and a flange ball valve 16 is provided on the pipe of the new oil inlet.

[0024] In a preferred embodiment, the oil return filter device 17 has an alarm function to prevent pump cavitation or component wear, enabling predictive maintenance and extending filter life.

[0025] In a preferred embodiment, the valve block 22 is provided with an oil drain ball valve, a safety valve 15 and an oil return pipe 23, and a second shut-off valve 18 and a second shock-resistant pressure gauge 19 are provided between the oil drain ball valve and the safety valve 15, and a second ball valve 14 is provided on the oil return pipe 23.

[0026] In practical use, after the hydraulic press flushing pipeline is installed, simply connect both ends of the flushing pipeline to the drain ball valve and the inlet of the return oil filter of the hydraulic station for flushing. Depending on the diameter of the connected flushing pipeline, select one, two, or three pump units to operate. After the flushing pump unit is powered on, the hydraulic oil provides output power through the pump unit, passes through the drain ball valve, and reaches the inlet of the pipeline to be flushed. After circulation, the hydraulic oil returns to the inlet of the return oil filter, is filtered by the return oil filter, and then returns to the oil tank. This cycle continues until the hydraulic oil accuracy grade is qualified. This hydraulic station for flushing can meet the flushing needs of pipelines of all diameters, with high flushing efficiency, large flushing flow, and stable pressure.

[0027] In actual use, the screw pump and the oil tank are connected by a vibration damping hose, which can prevent the hydraulic station for flushing from resonating during use, prevent vibration from being transmitted to the pipeline system, reduce noise, and improve the service life of the hydraulic station for flushing.

[0028] In actual use, the hydraulic station for flushing is relatively large in size. The flushing pump unit is integrated on a pallet and the oil tank adopts a separate structure, which facilitates disassembly and transportation.

[0029] In actual use, the pump unit 9 of the flushing pump set adopts a screw pump, which has a large displacement, high efficiency, and stable operation.

[0030] In actual use, the second ball valve 14 is closed when the flushing station is working normally. It is only opened when an emergency occurs during the operation of the hydraulic station for flushing and oil needs to be unloaded, so as to ensure the safety and maintainability of the entire equipment.

[0031] In actual use, flange ball valve 16 is in the closed state. When it is necessary to add new oil to the oil tank, connect the oil filling pipe to flange ball valve 16 and open flange ball valve 16 to inject new oil.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic station for flushing large-diameter pipelines, characterized in that: The system includes an oil tank, an electrical control box, a flushing pump assembly, and a return oil filter. The electrical control box is mounted on the oil tank, and the flushing pump assembly is electrically connected to the electrical control box. The flushing pump assembly has a detachable structure and includes several identical branches. The oil inlet of each branch is connected to the oil tank, and the oil outlet of each branch is connected to a common valve block. The oil outlet of the valve block is connected to the oil inlet of the flushing pipeline. The return oil filter is an independent filter unit. The oil inlet of the return oil filter is connected to the return oil outlet of the flushing pipeline, and the oil outlet is connected to the oil tank through its own pipeline. Each branch of the flushing pump unit is equipped with a butterfly valve, a vibration damper, a pump unit, a check valve, and a first ball valve in sequence from the oil inlet to the oil outlet. The pump unit is a screw pump.

2. The hydraulic station for flushing large-diameter pipelines according to claim 1, characterized in that: The pump unit is connected in parallel with an overflow valve, and a first shut-off valve and a first shock-resistant pressure gauge are provided between the check valve and the first ball valve.

3. The hydraulic station for flushing large-diameter pipelines according to claim 1, characterized in that: The valve block is equipped with an oil drain ball valve, a safety valve and an oil return pipe. A second shut-off valve and a second shock-resistant pressure gauge are provided between the oil drain ball valve and the safety valve. A second ball valve is provided on the oil return pipe.

4. The hydraulic station for flushing large-diameter pipelines according to claim 1, characterized in that: The bottom of the oil tank is equipped with two drain ball valves, the side of the oil tank is equipped with a level gauge and a temperature sensor, the top of the oil tank is equipped with two air filters and a new oil inlet, and the pipeline of the new oil inlet is equipped with a flange ball valve.

5. The hydraulic station for flushing large-diameter pipelines according to claim 1, characterized in that: The oil return filter device has a built-in alarm function.

6. The hydraulic station for flushing large-diameter pipelines according to claim 1, characterized in that: The fuel tank has a volume of 20 cubic meters.

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