A water injection wellhead fine filtering device

Abstract

The utility model relates to filter device technical field, concretely is a kind of injection wellhead fine filter device, including filter device ontology, the inner wall of filter device ontology is fixedly installed with filter cartridge, the inner wall of filter device ontology is rotatably connected with support shaft, the left and right sides of support shaft are inserted with two connecting rods, the opposite end of left and right sides two connecting rods is fixedly installed with support block, the side of support block away from support shaft is equipped with the slot of matching, the inner wall of slot is inserted with matching block;By driving both sides support block to rotate, by means of compensation component promotes both sides support block to move back, to this drive brush always with filter cartridge inner wall closely, effectively avoid the problem that impurity is not completely removed, at the same time, matching block and support block adopt assembly type structure design, it is convenient for subsequent brush replacement operation to further improve the use efficiency and filtering performance of filter device.

Description

Technical Field

[0001] This utility model relates to the field of filtration device technology, and more specifically, to a fine filtration device for water injection wellheads. Background Technology

[0002] With the continuous development of oil and gas fields, especially after entering the medium-high water-cut stage, injecting qualified water into underground oil layers has become an important guarantee for stable oil production in order to maintain formation pressure and improve crude oil recovery. In the water injection process, since the water source usually contains impurities such as suspended solid particles, colloidal substances and microorganisms, if it is injected directly into the formation without effective filtration, it is easy to cause problems such as reservoir blockage and pipeline corrosion, affecting water injection efficiency and reservoir development effect. Therefore, the injection wellhead needs to be equipped with a high-performance fine filtration device to achieve deep purification of the injected water.

[0003] Currently, in the use of filtration devices, the filter cartridge with its built-in precision filter screen serves as the core filtration unit. An external drive mechanism drives a cleaning brush to reciprocate along the inner wall of the filter cartridge. Through mechanical friction, impurities trapped on the filter screen are removed. Although the filter cartridge can perform its self-cleaning function well in the initial use, ensuring filtration accuracy and flow capacity, long-term high-frequency friction contact with the inner wall of the filter cartridge inevitably leads to brush bristle breakage, deformation, or surface passivation. As the usage time accumulates, the cleaning brush becomes worn, and the two cannot maintain effective contact, resulting in incomplete removal of impurities. Some particles remain on the surface of the filter screen, forming a dense scale layer, thus affecting the performance of the filtration device. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a fine filtration device for water injection wellheads, which solves the problem that in the prior art, as the cleaning brush is worn over time, the two cannot maintain effective contact, resulting in incomplete removal of impurities and some particulate matter remaining on the filter screen surface to form a dense scale layer, thereby affecting the performance of the filtration device.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a fine filtration device for water injection wellheads, comprising a filter device body, a filter cylinder fixedly installed on the inner wall of the filter device body, a support shaft rotatably connected to the inner wall of the filter device body, two connecting rods inserted into both the left and right sides of the support shaft, a support block fixedly installed at the opposite end of each of the two connecting rods on the left and right sides, a fitting groove is provided on the side of the support block away from the support shaft, a fitting block is inserted into the inner wall of the fitting groove, and a brush is installed on the side of the fitting block away from the support shaft.

[0006] The support shaft has two sliding grooves on both the left and right sides, and a sliding plate is slidably connected to the inner wall of the sliding groove. An elastic element is fixedly installed on the adjacent side of the sliding plate on both the left and right sides.

[0007] The connecting rod passes through the slide groove on the side away from the support block and is fixedly installed with the slide plate. The adjacent ends of the elastic elements on both the left and right sides are fixedly installed on the inner wall of the slide groove and are in a compressed state.

[0008] The fitting slot has a slot on the upper side of its inner wall, the fitting block has a sliding groove on its upper part, a pull rod is slidably connected to the inner wall of the sliding groove, a connecting rope is fixedly installed on the lower part of the pull rod away from the support shaft, the fitting block has a moving groove on its upper part, a moving plate is slidably connected to the inner wall of the moving groove, an insert is installed on one side of the moving plate, and an elastic element is installed on the other side.

[0009] The insert block passes through the mounting block on the side near the support shaft and is inserted into the inner wall of the slot. The end of the elastic element away from the support shaft is fixedly installed on the inner wall of the movable slot.

[0010] The lower end of the connecting rope, near the support shaft, passes through the moving groove and is fixedly installed with the moving plate. The connecting rope is installed on the upper side inside the mounting block, and the top of the pull rod passes through the mounting block.

[0011] The brush is attached to the inner wall of the filter cartridge on the side away from the support shaft, and the support blocks on the left and right sides are symmetrically designed and set on the inner wall of the filter cartridge.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In the above solution, by driving the two side support blocks to rotate, the compensation component causes the two side support blocks to move in opposite directions, thereby ensuring that the brush is always in close contact with the inner wall of the filter cartridge, effectively avoiding the problem of incomplete removal of impurities. At the same time, the mounting block and support block adopt an assembly structure design, which facilitates the subsequent replacement of the brush, thereby further improving the efficiency and filtration performance of the filtration device. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is the right view of the present invention;

[0016] Figure 3 for Figure 2 Cross-sectional view of the structure at point AA;

[0017] Figure 4 This is a right view of the support shaft of this utility model;

[0018] Figure 5 for Figure 4 Cross-sectional view of the structure at point BB;

[0019] Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle;

[0020] Figure 7 for Figure 5 Enlarged view of the structure at point B in the middle;

[0021] Figure 8 This is a schematic diagram of the mounting groove structure of this utility model.

[0022] [Figure Labels]

[0023] 1. Filter device body; 2. Filter cartridge; 3. Support shaft; 4. Support block; 5. Connecting rod; 6. Slide groove; 7. Slide plate; 8. Elastic component one; 9. Insert block; 10. Moving plate; 11. Moving groove; 12. Elastic component two; 13. Assembly block; 14. Pull rod; 15. Sliding groove; 16. Connecting rope; 17. Assembly groove; 18. Brush; 19. Slot. Detailed Implementation

[0024] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0025] Example 1: Please refer to Figures 1 to 8 This utility model provides a technical solution: a fine filtration device for water injection wellheads, including a filter device body 1, a filter cylinder 2 fixedly installed on the inner wall of the filter device body 1, a support shaft 3 rotatably connected to the inner wall of the filter device body 1, two connecting rods 5 inserted into both the left and right sides of the support shaft 3, and support blocks 4 fixedly installed at the opposite ends of the two connecting rods 5 on both sides. A fitting groove 17 is opened on the side of the support block 4 away from the support shaft 3, and a fitting block 13 is inserted into the inner wall of the fitting groove 17. A brush 18 is installed on the side of the fitting block 13 away from the support shaft 3. The side of the brush 18 away from the support shaft 3 is in contact with the inner wall of the filter cylinder 2. The support blocks 4 on the left and right sides are symmetrically designed and set on the inner wall of the filter cylinder 2, so that the support blocks 4 drive the brush 18 to maintain a close contact with the inner wall of the filter cylinder 2, thereby increasing the cleaning effect.

[0026] In use, the drive support shaft 3 rotates, which in turn drives the two side support blocks 4 to rotate synchronously. This allows the brush 18 to clean the inner wall of the filter cartridge 2, thereby improving the filtration effect of the filter device body 1. When maintenance is required, first release the restriction between the mounting block 13 and the support block 4, and then continue to pull up the pull rod 14 to drive the mounting block 13 out of the mounting groove 17 so that the brush 18 can be maintained or replaced. After that, the mounting block 13 is inserted into the inner wall of the mounting groove 17, and the mounting block 13 is fixed to the support block 4 using the fixing mechanism, which facilitates subsequent maintenance and use.

[0027] Example 2: Based on Example 1, in order to add a compensation component and maintain the contact state between the brush 18 and the filter cartridge 2, two sliding grooves 6 are opened on both the left and right sides of the support shaft 3. The inner wall of the sliding groove 6 is slidably connected to the sliding plate 7. The adjacent side of the sliding plate 7 on both the left and right sides is fixedly installed with an elastic element 8. The side of the connecting rod 5 away from the support block 4 passes through the sliding groove 6 and is fixedly installed with the sliding plate 7. The adjacent ends of the elastic elements 8 on both the left and right sides are fixedly installed on the inner wall of the sliding groove 6 and are in a compressed state. Thus, the elastic force of the elastic element 8 is used to push the connecting rods 5 on both sides to move in opposite directions, and simultaneously drive the support block 4 to move, thereby keeping the brush 18 and the filter cartridge 2 in contact at all times to ensure effective cleaning.

[0028] Because the inner wall of the chute 6 is equipped with an elastic element 8, and the elastic element 8 is in a compressed state, its elastic force pushes the two side slide plates 7 to slide backward along the inner wall of the chute 6, and pushes the two side support blocks 4 to slide backward through the connecting rod 5, thereby maintaining the contact state between the brush 18 and the inner wall of the filter cartridge 2, ensuring effective cleaning.

[0029] Example 3: Based on Example 2, to facilitate the removal of the brush 18 for maintenance or replacement, a slot 19 is provided on the upper side of the inner wall of the mounting groove 17, and a sliding groove 15 is provided on the upper part of the mounting block 13. A pull rod 14 is slidably connected to the inner wall of the sliding groove 15. A connecting rope 16 is fixedly installed on the lower part of the pull rod 14 away from the support shaft 3. A moving groove 11 is provided on the upper part of the mounting block 13, and a moving plate 10 is slidably connected to the inner wall of the moving groove 11. An insert 9 is installed on one side of the moving plate 10, and an elastic element 12 is installed on the other side. The insert 9 passes through the mounting block 13 on the side near the support shaft 3 and is inserted into the slot 19. The inner wall of the elastic element 12 is fixedly installed at one end away from the support shaft 3. The elastic force of the elastic element 12 pushes the insert 9 to maintain the insertion state between the insert block 9 and the slot 19, so as to fix the mounting block 13 and the support block 4. The lower end of the connecting rope 16 near the support shaft 3 passes through the moving groove 11 and is fixedly installed between it and the moving plate 10. The connecting rope 16 is installed on the upper side inside the mounting block 13. The top end of the pull rod 14 passes through the mounting block 13. By pulling the pull rod 14 upward, and using the connecting rope 16 to drive one side of the insert 9 to disengage from the slot 19, the mounting block 13 can be removed to maintain the brush 18.

[0030] Pull the lever 14 upward along the inner wall of the sliding groove 15, and at the same time use the connecting rope 16 to pull the two moving plates 10 to slide backward along the inner wall of the moving groove 11. While squeezing the elastic element 12 and compressing it, one side of the insert block 9 is driven to disengage from the slot 19. Then, continue to pull the lever 14 upward to drive the mounting block 13 to disengage from the mounting groove 17, so that the brush 18 can be maintained or replaced. After completion, insert the mounting block 13 into the inner wall of the mounting groove 17. At the same time, the insert block 9 will first adhere to the support block 4 and be squeezed and contracted to the inner wall of the moving groove 11, and squeeze the elastic element 12. After the mounting block 13 is fully reset, the elastic force of the elastic element 12 pushes the insert block 9 to reset and insert into the inner wall of the slot 19, thereby fixing the mounting block 13 and the support block 4, and facilitating subsequent maintenance and use.

[0031] The working process of this utility model is as follows:

[0032] In use, by driving the support shaft 3 to rotate, the two side support blocks 4 rotate synchronously, thereby using the brush 18 to clean the inner wall of the filter cartridge 2. During this process, since the inner wall of the slide 6 is equipped with an elastic element 8, and the elastic element 8 is in a compressed state, its elastic force pushes the two side slide plates 7 to slide backward along the inner wall of the slide 6, and pushes the two side support blocks 4 to slide backward through the connecting rod 5, thereby maintaining the contact state between the brush 18 and the inner wall of the filter cartridge 2, ensuring effective cleaning, thereby improving the filtration effect of the filter device body 1.

[0033] When maintenance is required, pull the lever 14 upward along the inner wall of the sliding groove 15, and at the same time use the connecting rope 16 to pull the two moving plates 10 to slide backward along the inner wall of the moving groove 11. While squeezing the elastic element 12 and compressing it, one side of the insert block 9 is driven out of the slot 19. Then, pull the lever 14 upward to drive the mounting block 13 out of the mounting groove 17 so that the brush 18 can be maintained or replaced. After that, insert the mounting block 13 into the inner wall of the mounting groove 17. At the same time, the insert block 9 will first come into contact with the support block 4 and be squeezed and contracted to the inner wall of the moving groove 11, and squeeze the elastic element 12. After the mounting block 13 is fully reset, the elastic force of the elastic element 12 pushes the insert block 9 back into the inner wall of the slot 19, thereby fixing the mounting block 13 and the support block 4, and facilitating subsequent maintenance.

[0034] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0035] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0036] Finally: 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 fine filtration device for water injection wellheads, characterized in that, The filter includes a filter body (1), a filter cartridge (2) is fixedly installed on the inner wall of the filter body (1), a support shaft (3) is rotatably connected to the inner wall of the filter body (1), two connecting rods (5) are inserted into the left and right sides of the support shaft (3), and a support block (4) is fixedly installed at one end of each of the two connecting rods (5) on the left and right sides. A fitting groove (17) is opened on the side of the support block (4) away from the support shaft (3), a fitting block (13) is inserted into the inner wall of the fitting groove (17), and a brush (18) is installed on the side of the fitting block (13) away from the support shaft (3).

2. The fine filtration device for water injection wellheads according to claim 1, characterized in that, Two sliding grooves (6) are provided on both the left and right sides of the support shaft (3). A sliding plate (7) is slidably connected to the inner wall of the sliding groove (6). An elastic element (8) is fixedly installed on the adjacent side of the sliding plate (7) on both the left and right sides.

3. The fine filtration device for water injection wellheads according to claim 2, characterized in that, The connecting rod (5) passes through the slide groove (6) on the side away from the support block (4) and is fixedly installed with the slide plate (7). The adjacent ends of the elastic elements (8) on both the left and right sides are fixedly installed on the inner wall of the slide groove (6) and are in a compressed state.

4. The fine filtration device for water injection wellheads according to claim 1, characterized in that, The upper side of the inner wall of the fitting groove (17) is provided with a slot (19), the upper part of the fitting block (13) is provided with a sliding groove (15), the inner wall of the sliding groove (15) is slidably connected with a pull rod (14), the lower part of the pull rod (14) is fixedly installed with a connecting rope (16) on the side away from the support shaft (3), the upper part of the fitting block (13) is provided with a moving groove (11), the inner wall of the moving groove (11) is slidably connected with a moving plate (10), one side of the moving plate (10) is installed with an insert (9), and the other side is installed with an elastic element (12).

5. The fine filtration device for water injection wellheads according to claim 4, characterized in that, The insert (9) passes through the mounting block (13) on the side near the support shaft (3) and is inserted into the inner wall of the slot (19). The end of the elastic element (12) away from the support shaft (3) is fixedly installed on the inner wall of the moving slot (11).

6. The fine filtration device for water injection wellheads according to claim 4, characterized in that, The lower end of the connecting rope (16) near the support shaft (3) passes through the moving groove (11) and is fixedly installed between it and the moving plate (10). The connecting rope (16) is installed on the upper side inside the mounting block (13), and the top of the pull rod (14) passes through the mounting block (13).

7. The fine filtration device for water injection wellheads according to claim 1, characterized in that, The brush (18) is attached to the inner wall of the filter cylinder (2) on the side away from the support shaft (3). The support blocks (4) on the left and right sides are symmetrically designed and are set on the inner wall of the filter cylinder (2).

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