Strong-magnetic large-flow iron removal filter

Abstract

The utility model discloses a strong-magnetic high-flow iron removal filter. The filter integrates a strong-magnetic component, a cleaning device, a filter layer and an automatic control system, the strong magnetic assembly is composed of high-performance permanent magnets or electromagnets, and the high-performance permanent magnets or electromagnets are arranged in an array and arranged in a staggered mode or in a magnetic pole attraction mode so as to generate a strong magnetic field and efficiently adsorb iron impurities in fluid. The cleaning device regularly cleans iron impurities on the ferromagnetic assembly through mechanical vibration and cleaning liquid injection, and the efficient adsorption capacity of the ferromagnetic assembly is kept; the filtering layer is arranged between the water inlet and the strong magnetic assembly, large-particle impurities are preliminarily filtered, and the blocking risk is reduced; the automatic control system monitors the fluid state and the iron impurity accumulation condition in real time, the cleaning device is automatically started, and continuous and efficient operation of the filter is ensured. The device is optimized in structural design and convenient to disassemble, assemble and maintain, the maintenance cost is reduced, and the overall performance and adaptability are improved; not only is the iron removal efficiency improved, but also the system energy consumption and the operation cost are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of water quality filtration equipment, and particularly relates to a strong magnetic large-flow iron removal filter. Technical Background

[0002] In the power system, the cooling system is a key part to ensure the efficient and stable operation of the generator set. Among them, the SCAL (Surface Condenser Air Cooled) type indirect air-cooled unit, as an advanced cooling method, is widely used in large thermal power plants. The SCAL type indirect air-cooled unit condenses the exhaust steam of the steam turbine into water through a surface condenser, and uses ambient air as the cooling medium to dissipate heat into the atmosphere through equipment such as an air cooling tower or an air-cooled island, so as to realize the circulating cooling of the steam turbine. This cooling method has the characteristics of water saving, environmental protection, strong adaptability, etc., and is especially suitable for areas with water resource shortages.

[0003] In the power system, in addition to the cooling system, filters also play a crucial role. Filters are mainly applied to water treatment, oil treatment, gas purification and other links, aiming to remove impurities in the fluid, protect system equipment from wear and corrosion, extend the service life of the equipment, and improve the operation efficiency of the system. Especially in key parts such as the circulating water system, lubricating oil system, and fuel system, the performance of the filter directly affects the safe and stable operation of the entire system. During the infrastructure installation and commissioning stage of the SCAL type indirect air-cooled unit, it is often necessary to flush the aluminum radiator with water. When flushing, the pH should be controlled at 7.0 - 8.5, and the iron content should be less than 1000 ug / l. When the turbidity of the overall flushing drainage of the circulating water cooling water system of the surface type indirect air-cooled unit is less than 20 NTU and the conductivity is less than 10 us / cm, the flushing is completed; before the system is officially put into operation, the indirect cooling circulating water should be bypassed and purified according to the water quality situation until the circulating water quality meets the operation control requirements.

[0004] In the power system, iron impurities are one of the common pollutants, and they may come from various sources such as pipeline corrosion and equipment wear. If these iron impurities are not removed in time, they will accumulate in the system, resulting in pipeline blockage, increased equipment wear, and even causing the unit to shut down due to failure. Therefore, developing efficient and reliable iron removal filters is of great significance for ensuring the safe and stable operation of the power system.

[0005] However, the existing iron removal filters still have many deficiencies in terms of performance, cost, maintenance, etc. On the one hand, traditional iron removal filters mostly adopt mechanical filtration or magnetic filtration methods. Although they can remove iron impurities to a certain extent, the filtration efficiency is limited, and it is easy to affect the system flow due to blockage. On the other hand, although high-performance iron removal filters can effectively remove iron impurities, they often have complex structures, high costs, and difficult maintenance, which is not conducive to large-scale popularization and application.

[0006] In addition, as the power system develops towards higher parameters and larger capacities, the performance requirements for iron removal filters are also getting higher and higher. Traditional iron removal filters are difficult to meet the needs of modern power systems. There is an urgent need to develop a new type, efficient, and reliable iron removal filter to meet the high standards of power systems for fluids such as water quality and oil quality. Summary of the Invention

[0007] Based on the above problems, the utility model proposes a new type of high-intensity magnetic and large-flow iron removal filter, aiming to solve the deficiencies of existing iron removal filters in terms of performance, cost, maintenance, etc., improve the iron removal and filtration efficiency, reduce the system maintenance cost, and provide a strong guarantee for the safe and stable operation of the power system.

[0008] The technical solution adopted by the utility model is as follows:

[0009] A high-intensity magnetic and large-flow iron removal filter, comprising:

[0010] A filter main body, which has a preset space inside for accommodating the iron removal and filtration elements, and the filter main body has an inlet and an outlet respectively provided at both ends;

[0011] At least one high-intensity magnetic assembly, installed inside the filter main body at a position between the inlet and the outlet, to generate a high-intensity magnetic field to adsorb and remove iron impurities in the fluid flowing through the filter;

[0012] The inlet and the outlet are respectively fixedly arranged at both ends of the filter main body, so that the fluid to be filtered can enter through the inlet, be purified after flowing through the high-intensity magnetic assembly area, and be discharged through the outlet;

[0013] The high-intensity magnetic assembly includes a plurality of high-performance permanent magnets or electromagnets, which are arranged in an array and fixedly installed on a preset bracket or bottom plate inside the filter main body, and are configured in a staggered arrangement or a structure with opposite magnetic poles attracting each other.

[0014] It further includes a cleaning device, at least part of which can contact or act on the high-intensity magnetic assembly, for periodically cleaning the high-intensity magnetic assembly to remove the accumulated iron impurities and restore its adsorption capacity.

[0015] At least one filter layer is arranged between the inlet and the high-intensity magnetic assembly, and is fixedly installed inside the filter main body, for initially filtering large particle impurities in the fluid and reducing the risk of blocking the high-intensity magnetic assembly.

[0016] A mechanical vibrator is directly or indirectly connected to the high-intensity magnetic assembly, and removes the iron impurities attached to the high-intensity magnetic assembly by mechanical vibration; the mechanical vibrator is installed outside the filter main body and is connected to the high-intensity magnetic assembly through a transmission mechanism;

[0017] A cleaning liquid injection device that can inject cleaning liquid into the filter body to assist in removing iron impurities on the ferromagnetic components; the cleaning liquid injection device has an injection port communicated with the filter body and is provided with a control valve to control the injection amount of the cleaning liquid.

[0018] An automatic control system, connected to the cleaning device, can automatically start the cleaning device for cleaning operations according to preset monitoring parameters (such as water flow rate, iron impurity accumulation amount or preset cleaning cycle); the automatic control system includes a controller and a sensor group. The controller is arranged outside the filter body, and the sensor group is installed at the water inlet, water outlet or inside the filter body to monitor the fluid state or iron impurity accumulation situation in real time and transmit signals to the controller for processing.

[0019] An alarm device, connected to the controller, when detecting abnormal situations (such as abnormal water flow rate, excessive iron impurity accumulation amount or cleaning device failure), emits an alarm signal to remind the operator.

[0020] 1. A quick-connect interface for easy disassembly and assembly is provided outside the filter body. The quick-connect interface is arranged on the side wall or top of the filter body, facilitating the maintenance and replacement of the ferromagnetic components, filter layer or cleaning device.

[0021] Safety protection devices, such as overcurrent protectors, anti-dry burning devices, etc., are installed inside or outside the filter body and are connected to the control system to automatically cut off the water source or take other protection measures in case of abnormal situations to prevent equipment damage or safety accidents.

[0022] A novel high-strength magnetic large-flow iron removal filter disclosed by the present utility model has significant beneficial effects compared with the prior art, mainly reflected in the following aspects:

[0023] 1. High-efficiency iron removal ability: The present invention realizes multi-directional and high-efficiency capture of iron impurities in the fluid by ingeniously designing three groups of detachable ferromagnetic rod groups, and the inner magnetic rods in each group are arranged in a rotating manner at an angle of 40° per row, so that the removal rate of iron-containing particles is as high as 99%. This layout not only increases the interception area but also improves the coverage range of the magnetic field, effectively improving the iron removal efficiency.

[0024] 2. Structure optimization and convenient maintenance: A sight hole (round sight glass) is provided on the filter body to facilitate real-time observation of the fouling situation on the surface of the magnetic rods, so as to arrange cleaning work in time. The magnetic rod group frame adopts a pulley design, which is convenient for quick removal and installation, significantly reducing the maintenance difficulty and downtime. In addition, gaskets are provided between the magnetic rod groups to avoid direct contact, reduce wear, and extend the service life.

[0025] 3. Stability and adaptability: Through reasonable structural design, including the inclination angle design (10~30°), flexible connections at the inlet and outlet, etc., the stability and adaptability of the filter are enhanced. Especially the inclination angle design ensures that the inlet is lower and the outlet is higher, effectively promoting the complete discharge of impurities inside the filter during drainage, reducing residues, and improving the overall performance.

[0026] 4. Low cost and high benefit: Compared with traditional high-intensity magnetic filters, while ensuring high-efficiency iron removal, this invention reduces production costs and maintenance costs through structural optimization and detachable design. At the same time, the design of the movable device enables the filter to be flexibly applied to various scenarios, meeting different filtration requirements, and has a broader application prospect.

[0027] 5. Environmental protection and energy conservation: The iron removal filter of this invention reduces pollution to downstream equipment and the environment by efficiently removing iron impurities in the fluid, meeting the current requirements of environmental protection and energy conservation. At the same time, due to its high filtration capacity and stable performance, it also reduces energy consumption and operating costs.

[0028] In summary, a new type of high-intensity magnetic large-flow iron removal filter of this invention, with its advantages of high-efficiency iron removal ability, structural optimization, convenient maintenance, stability and adaptability, low cost and high benefit, and environmental protection and energy conservation, provides an ideal choice for water treatment, oil treatment and other fields in the power system, and has significant technological progress and practical application value. Brief Description of the Drawings

[0029] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0030] Figure 1 is the external structural schematic diagram of the present utility model.

[0031] Figure 2 is the internal structural schematic diagram of the present utility model.

[0032] Figure 3 is the side structural schematic diagram of the present utility model.

[0033] Figure 4 is the internal view of the A-A section of the present utility model.

[0034] In the figure: 1 - First saddle support; 2 - Filter body; 3 - Second saddle support; 4 - Slotted flange; 5 - O-ring; 6 - Flange; 7 - Quick-opening bolt assembly; 8 - Elliptical head; 9 - Handle; 10 - Rocker arm device; 11 - First straight pipe section; 12 - 90° elbow; 13 - Plate flat welding flange; 14 - Second straight pipe section; 15 - Round sight glass; 16 - Nameplate; 17 - 45° elbow; 18 - Third straight pipe section; 19 - Fourth straight pipe section; 20 - Fifth straight pipe section; 21 - Magnetic bar; 22 - Magnetic bar group frame; 23 - Gasket; 24 - Stopper; 25 - Pulley. Detailed implementation manner

[0035] The present utility model specifically discloses a new type of high-strength magnetic large-flow iron removal filter, including a filter body 2, in which three groups of detachable magnetic bar group frames 22 are ingeniously installed to efficiently remove iron impurities in the fluid. A round sight glass 15 is provided on the filter body 2 to facilitate intuitive observation of the fouling condition on the surface of the magnetic bar 21, and a drain port N4 is equipped to ensure timely discharge of impurities. In addition, the filter is designed with an inclination angle of 10 - 30°, and is supported by the first saddle support 1 and the second saddle support 3 to ensure that the inlet is low and the outlet is high, effectively promoting the complete evacuation of impurities inside the filter during drainage.

[0036] Specifically, the filter uses a DN400 diameter and has a length of 1870 mm. Each magnetic bar group frame 22 internally configured is 500 mm long, each group contains 16 magnetic bars 21 arranged in three rows, each magnetic bar is 150 mm long and 25 mm in diameter, and is arranged in a rotation with an angle of 40° per row, enhancing the multi-directional filtration effect. The center of the magnetic bar group frame 22 is fixed by a stainless steel shaft rod, the cross-section of the rod is octagonal, and it is directly welded to the magnetic bar 21, with a stable structure.

[0037] This filter is a movable device, and both the inlet and outlet are soft-connected, with strong adaptability and less need to consider vibration factors. The two ends of the filter are designed as elliptical heads 8, but the inlet and outlet N1 are both located outside the magnetic bar adsorption unit, and are connected through the first straight pipe section 11, the second straight pipe section 14, the third straight pipe section 18, the fourth straight pipe section 19, the fifth straight pipe section 20, and the 90° elbow 12, 45° elbow 17, etc., ensuring the smooth passage of the fluid. To further improve the filtration efficiency, two such filters can be used in parallel, with a total of six magnetic bar adsorption units internally configured, enabling rod replacement without stopping the machine and ensuring continuous operation of the system.

[0038] Pulleys 25 are provided on the magnetic bar group frame 22 to facilitate the quick and easy removal and installation of the magnetic bar group frame for cleaning. A gasket 23 is provided between each magnetic bar group frame to avoid direct contact and reduce wear. The innermost magnetic bar group frame is also provided with a stopper 24 to reduce friction with the pipe wall. In addition, a lifting ring is also provided on the filter body 2 to facilitate on-site installation and movement.

[0039] This filter not only has a compact structure and excellent performance, but also is easy to operate and has low maintenance costs. Its unique design enables the removal rate of iron-containing particulate matter to reach as high as 99%. Compared with traditional high-intensity magnetic filters on the market, it has higher efficiency and reliability. At the same time, the design of the movable device enables the filter to be flexibly applied to various scenarios to meet different filtration requirements.

[0040] As described above, the present utility model can quickly process particulate iron in circulating water according to on-site requirements, has a long application cycle, is convenient and easy to clean, and can be better used in combination with a large-flow filter element filter. It is not limited to the above embodiments. Structures that are the same or similar should fall within the protection scope of the present utility model.

Claims

1. A strong magnetic large-flow iron removal filter, characterized in that, Comprising: A filter body having a preset space inside for accommodating a ferromagnetic filtering element, and the filter body has a water inlet and a water outlet respectively provided at two ends; At least one strong magnetic component installed inside the filter body at a position between the water inlet and the water outlet to generate a strong magnetic field to adsorb and remove iron impurities in the fluid flowing through the filter; The water inlet and the water outlet are respectively fixedly provided at two ends of the filter body, so that the fluid to be filtered can enter through the water inlet, be purified after flowing through the area of the strong magnetic component, and be discharged through the water outlet; The strong magnetic component includes a plurality of high-performance permanent magnets or electromagnets, which are arranged in an array and fixedly installed on a preset bracket or base plate inside the filter body, and are configured in a staggered arrangement or a structure with magnetic poles attracting each other.

2. The iron removal filter according to claim 1, characterized in that, It further includes a cleaning device, at least part of which can contact or act on the strong magnetic component, for periodically cleaning the strong magnetic component to remove accumulated iron impurities and restore its adsorption capacity.

3. The iron removal filter according to claim 1 or 2, characterized in that, It further includes: At least one filter layer provided between the water inlet and the strong magnetic component and fixedly installed inside the filter body for preliminarily filtering large particle impurities in the fluid and reducing the risk of clogging the strong magnetic component.

4. The iron removal filter according to claim 2, characterized in that, The cleaning device includes: A mechanical vibrator directly or indirectly connected to the strong magnetic component to remove iron impurities attached to the strong magnetic component by mechanical vibration; the mechanical vibrator is installed outside the filter body and connected to the strong magnetic component through a transmission mechanism; A cleaning liquid injection device capable of injecting cleaning liquid into the filter body to assist in removing iron impurities on the strong magnetic component; the cleaning liquid injection device has an injection port communicating with the filter body and is provided with a control valve to control the injection amount of the cleaning liquid.

5. The iron removal filter according to claim 4, wherein It further includes: An automatic control system connected to the cleaning device, capable of automatically starting the cleaning device for cleaning operations according to preset monitoring parameters, and the monitoring parameters include water flow rate, iron impurity accumulation amount or a preset cleaning cycle; the automatic control system includes a controller and a sensor group, the controller is arranged outside the filter body, and the sensor group is installed at the water inlet, the water outlet or inside the filter body for real-time monitoring of the fluid state or the iron impurity accumulation situation and transmitting signals to the controller for processing.

6. The iron removal filter according to claim 5, wherein, The automatic control system further includes: An alarm device connected to the controller, which emits an alarm signal to remind the operator when an abnormal situation is detected, and the abnormal situations include abnormal water flow rate, excessive iron impurity accumulation amount or cleaning device failure.

7. The iron removal filter according to any one of claims 1 or 2, characterized in that, Quick-release interfaces for easy disassembly and assembly are provided outside the filter body, and the quick-release interfaces are provided on the side wall or the top of the filter body, which is convenient for maintaining and replacing the strong magnetic component, the filter layer or the cleaning device.

8. The iron removal filter according to any one of claims 1 or 2, characterized in that, It further includes: A safety protection device, specifically an overcurrent protector or a dry-running prevention device, installed inside or outside the filter body and connected to the control system, for automatically cutting off the water source in case of an abnormal situation to prevent equipment damage or safety accidents.

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