Anti-corrosion petroleum fracturing sand filtration protection device

Abstract

The utility model discloses an anti -corrosion petroleum fracturing sand filter protection device, include: casing, motor, the motor is installed at the lower side outer wall center place of casing, drive shaft, drive shaft sets up on the lower side inner wall of casing, the output shaft of motor is fixedly connected with drive shaft, filter bowl, filter bowl fixed setting is at the upper end of drive shaft. Compared with prior art, through coating anticorrosion coating on the inner wall of casing and filter bowl, can effectively resist the corrosion of fracturing fluid, prolongs the service life of device, through the setting of cleaning mechanism, can clean filter bowl automatically, need not manual intervention, has greatly improved filter bowl cleaning efficiency, has reduced the device downtime, has reduced labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of fracturing sand filtration technology, and in particular to a corrosion-resistant petroleum fracturing sand filtration and protection device. Background Technology

[0002] In the process of oil extraction, fracturing technology is one of the important means to increase oil and gas production. The oil fracturing sand filtration and protection device is used to filter and separate the mixture of fracturing fluid and fracturing sand to ensure the cleanliness of fracturing fluid and the reuse of fracturing sand.

[0003] Because fracturing fluid contains various chemical components, it is highly corrosive to filtration devices, resulting in a short service life. Furthermore, in existing technologies, after use, fracturing sand filtration devices require timely cleaning of the filter screen to prevent corrosion from residual fracturing fluid and to extend the device's lifespan. However, the currently prevalent manual cleaning method has many drawbacks: it is cumbersome, time-consuming, and inefficient. Utility Model Content

[0004] The main purpose of this invention is to provide a corrosion-resistant oil fracturing sand filtration and protection device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a corrosion-resistant oil fracturing sand filtration and protection device, comprising:

[0006] case;

[0007] An electric motor is mounted at the center of the lower outer wall of the housing;

[0008] A drive shaft is disposed on the lower inner wall of the housing, and the output shaft of the motor is fixedly connected to the drive shaft;

[0009] A filter cartridge, which is fixedly mounted on the upper end of the drive shaft;

[0010] A cleaning mechanism is disposed inside the housing and is used to clean the filter cartridge;

[0011] As a further description of the above technical solution, the cleaning mechanism includes a chute, which is formed on the lower inner wall of the housing. A through groove is formed on the upper side wall of the housing at a position corresponding to the chute. A first slider is slidably arranged in the chute, and a second slider is slidably arranged in the through groove. A reciprocating screw is rotatably arranged between the first slider and the second slider. A movable seat that cooperates with the reciprocating screw is connected to the reciprocating screw. An L-shaped connecting rod is fixedly connected to the side wall of the movable seat away from the reciprocating screw. A brush ring is fixedly connected to the other end of the L-shaped connecting rod. The brush ring has several water spray holes. A driven gear is fixedly sleeved on the lower end of the reciprocating screw. A driving gear that cooperates with the driven gear is fixedly sleeved on the drive shaft. A water inlet hose is connected to the brush ring and is connected to an external water supply device.

[0012] As a further description of the above technical solution, a positioning plate is fixedly connected to one side wall of the second slider, and a positioning pin is slidably inserted into the positioning plate. Two positioning holes that cooperate with the positioning pin are opened on the upper outer wall of the housing.

[0013] As a further description of the above technical solution, two symmetrically distributed guide grooves are provided on one inner wall of the housing, and a guide telescopic rod is slidably arranged in the guide groove. The telescopic end of the guide telescopic rod is fixedly connected to the movable seat.

[0014] As a further description of the above technical solution, a connecting key is fixedly provided at the center of the upper end of the drive shaft and auxiliary rods are fixedly provided on both sides of the connecting key. A keyway adapted to the connecting key is opened at the center of the bottom wall of the filter cartridge, and a slot adapted to the auxiliary rods is also opened on the bottom wall of the filter cartridge.

[0015] As a further description of the above technical solution, a feeding hopper is provided on the upper side wall of the shell, and a discharge pipe is provided on the lower outer side wall of the shell.

[0016] As a further description of the above technical solution, the inner wall of the housing and the filter cartridge are coated with an anti-corrosion coating.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. By coating the inner wall of the shell and the filter cartridge with an anti-corrosion coating, the corrosion of fracturing fluid can be effectively resisted, thus extending the service life of the equipment.

[0019] 2. The cleaning mechanism can automatically clean the filter cartridge without manual intervention, which greatly improves the cleaning efficiency of the filter cartridge, reduces the downtime of the equipment, and reduces labor intensity. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the overall structure of an anti-corrosion oil fracturing sand filtration and protection device according to the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the shell of an anti-corrosion petroleum fracturing sand filtration and protection device according to the present invention;

[0022] Figure 3 This is a schematic diagram of the brush ring structure of an anti-corrosion petroleum fracturing sand filtration and protection device according to the present invention;

[0023] Figure 4 This is a schematic diagram of the filter cartridge structure of an anti-corrosion oil fracturing sand filtration and protection device according to the present invention;

[0024] Figure 5 This is a schematic diagram of the positioning plate structure of an anti-corrosion petroleum fracturing sand filtration and protection device according to the present invention;

[0025] In the diagram: 1. Housing; 2. Motor; 3. Drive shaft; 4. Filter cartridge; 5. Cleaning mechanism; 51. Slide groove; 52. Through groove; 53. First slider; 54. Second slider; 55. Reciprocating screw; 56. Moving seat; 57. L-shaped connecting rod; 58. Brush ring; 581. Water spray hole; 59. Driven gear; 510. Drive gear; 511. Water inlet hose; 6. Positioning plate; 61. Positioning pin; 7. Positioning hole; 11. Guide groove; 111. Guide telescopic rod; 31. Auxiliary rod; 41. Keyway; 42. Slot. Detailed Implementation

[0026] To make the technical means, creative features, and objectives of this utility model easier to understand, the following describes this utility model in conjunction with specific embodiments.

[0027] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0029] Please see Figure 1-5 This utility model provides a corrosion-resistant oil fracturing sand filtration and protection device, comprising:

[0030] Casing 1;

[0031] Motor 2 is installed at the center of the lower outer wall of housing 1;

[0032] Drive shaft 3 is installed on the lower inner wall of housing 1, and the output shaft of motor 2 is fixedly connected to drive shaft 3;

[0033] Filter cartridge 4 is fixedly mounted on the upper end of drive shaft 3;

[0034] The cleaning mechanism 5 is installed inside the housing 1 and is used to clean the filter cartridge 4.

[0035] The above structure enables the filtration of fracturing sand and can automatically clean the filter cartridge 4, preventing fracturing fluid residue.

[0036] The cleaning mechanism 5 includes a chute 51, which is located on the lower inner wall of the housing 1. A through groove 52 is located on the upper wall of the housing 1 at a position corresponding to the chute 51. A first slider 53 slides in the chute 51, and a second slider 54 slides in the through groove 52. A reciprocating screw 55 rotates between the first slider 53 and the second slider 54. A movable seat 56 is connected to the reciprocating screw 55 and cooperates with it. An L-shaped connecting rod 57 is fixedly connected to the side wall of the movable seat 56 away from the reciprocating screw 55. A brush ring 58 is fixedly connected to the other end of the L-shaped connecting rod 57. The brush ring 58 has several water spray holes 581. A driven gear 59 is fixedly sleeved on the lower end of the reciprocating screw 55. A driving gear 510 that cooperates with the driven gear 59 is fixedly sleeved on the drive shaft 3. A water inlet hose 511 is connected to the brush ring 58 and is connected to an external water supply device.

[0037] With the above-mentioned structure, the filter cartridge 4 can be cleaned automatically without manual intervention, which greatly improves the cleaning efficiency of the filter cartridge 4, reduces the downtime of the device, and reduces labor intensity.

[0038] It should be noted that all components of the cleaning mechanism 5 are made of corrosion-resistant materials. In addition, the reciprocating screw 55 has two threaded grooves with the same pitch and opposite directions on its surface. The moving seat 56 is provided with a slider that matches the threaded groove. By rotating the reciprocating screw 55, the side of the helical groove pushes the slider placed in the helical groove to make axial reciprocating motion.

[0039] The second slider 54 is fixedly connected to a positioning plate 6 on one side wall, and a positioning pin 61 is slidably inserted on the positioning plate 6. Two positioning holes 7 are opened on the upper outer wall of the housing 1 to cooperate with the positioning pin 61.

[0040] The above structure allows for the fixation of the position of the reciprocating lead screw 55, facilitating the switching of working states.

[0041] Two symmetrically distributed guide grooves 11 are provided on one inner wall of the housing 1. A guide telescopic rod 111 is slidably provided in the guide groove 11. The telescopic end of the guide telescopic rod 111 is fixedly connected to the movable seat 56.

[0042] The above structure can guide the movable seat 56, making its up-and-down movement more stable.

[0043] Among them, a connecting key is fixedly provided at the center of the upper end of the drive shaft 3 and auxiliary plug rods 31 are fixedly provided on both sides of the connecting key. A keyway 41 adapted to the connecting key is provided at the center of the bottom wall of the filter cylinder 4, and a slot 42 adapted to the auxiliary plug rods 31 is also provided on the bottom wall of the filter cylinder 4.

[0044] With the above structure, after the connecting key on the drive shaft 3 is inserted into the keyway 41 at the bottom of the filter cartridge 4, torque can be transmitted between the drive shaft 3 and the filter cartridge 4, so that the drive shaft 3 can drive the filter cartridge 4 to rotate. This connection method can facilitate the disassembly and assembly of the filter cartridge 4. When the connecting key is inserted into the keyway 41, the auxiliary rod 31 will also be inserted into the slot 42, which can improve the connection effect between the filter cartridge 4 and the drive shaft 3.

[0045] The upper side wall of the shell 1 is provided with a feeding hopper, through which fracturing sand is added into the filter cylinder 4 inside the shell 1. The lower outer wall of the shell 1 is provided with a discharge pipe, through which the fracturing fluid thrown out by centrifugal force is discharged.

[0046] The inner wall of the shell 1 and the filter cartridge 4 are coated with an anti-corrosion coating, which can effectively resist the corrosion of fracturing fluid and extend the service life of the device.

[0047] It should be noted that this utility model is a corrosion-resistant oil fracturing sand filtration and protection device. In use, the material to be filtered is added into the filter cylinder 4 through the feeding hopper. The output shaft of the motor 2 drives the drive shaft 3 and the filter cylinder 4 to rotate. When the filter cylinder 4 rotates, under the action of centrifugal force, the fracturing fluid is thrown out through the filter holes on the filter cylinder 4 and then discharged through the discharge pipe. After filtration, the filter cylinder 4 is removed, and the fracturing sand is poured out. When cleaning the filter cylinder 4, the positioning pin 61 is pulled up, allowing the second slider 54 to slide. Then, the second slider 54 is pushed to move. The movement of the second slider 54 will drive the reciprocating screw 55 to move, thereby causing the driven gear 59 to mesh with the driving gear 510. At the same time, the brush ring 58 will coincide with the axis of the filter cylinder 4. Then, the positioning pin 61 is inserted into another positioning hole 7, and the reciprocating screw 59 is moved. Positioning is performed to ensure stable meshing between the driven gear 59 and the driving gear 510. Then, the output shaft of the motor 2 drives the drive shaft 3 to rotate, which in turn drives the filter cartridge 4 to rotate. Simultaneously, under the action of the driving gear 510, the driven gear 59 drives the reciprocating screw 55 to rotate. When the reciprocating screw 55 rotates, the moving seat 56 moves up and down repeatedly, thereby allowing the brush ring 58 to clean the rotating filter cartridge 4. Water enters the brush ring 58 through the water inlet hose 511 and is then sprayed out through the water spray hole 581. This, combined with the brush ring 58, completes the cleaning of the filter cartridge 4. After cleaning, the positioning pin 61 is pulled up and the second slider 54 is pushed to reset the reciprocating screw 55, causing the positioning pin 61 to insert into another positioning hole 7 and lock the position of the second slider 54.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A corrosion-resistant oil fracturing sand filtration and protection device, characterized in that, include: Shell (1); Motor (2), said motor (2) is installed at the center of the lower outer wall of housing (1); Drive shaft (3), the drive shaft (3) is set on the lower inner wall of the housing (1), and the output shaft of the motor (2) is fixedly connected to the drive shaft (3); The filter cartridge (4) is fixedly mounted on the upper end of the drive shaft (3); Cleaning mechanism (5) is disposed inside housing (1).

2. The corrosion-resistant petroleum fracturing sand filtration and protection device according to claim 1, characterized in that, The cleaning mechanism (5) includes a slide groove (51), which is formed on the lower inner wall of the housing (1). A through groove (52) is formed on the upper side wall of the housing (1) at a position corresponding to the slide groove (51). A first slider (53) is slidably arranged in the slide groove (51), and a second slider (54) is slidably arranged in the through groove (52). A reciprocating screw (55) is rotatably arranged between the first slider (53) and the second slider (54). A movable seat (56) is connected to the reciprocating screw (55) and cooperates with it. An L-shaped connecting rod (57) is fixedly connected to the side wall away from the reciprocating screw (55). A brush ring (58) is fixedly connected to the other end of the L-shaped connecting rod (57). The brush ring (58) has several water spray holes (581). A driven gear (59) is fixedly sleeved on the lower end of the reciprocating screw (55). A driving gear (510) that cooperates with the driven gear (59) is fixedly sleeved on the drive shaft (3). A water inlet hose (511) is connected to the brush ring (58). The water inlet hose (511) is connected to an external water supply device.

3. The corrosion-resistant petroleum fracturing sand filtration and protection device according to claim 2, characterized in that, A positioning plate (6) is fixedly connected to one side wall of the second slider (54), and a positioning pin (61) is slidably inserted on the positioning plate (6). Two positioning holes (7) that cooperate with the positioning pin (61) are opened on the upper outer wall of the housing (1).

4. The corrosion-resistant oil fracturing sand filtration and protection device according to claim 2, characterized in that, Two symmetrically distributed guide grooves (11) are provided on one inner wall of the housing (1). A guide telescopic rod (111) is slidably provided in the guide groove (11). The telescopic end of the guide telescopic rod (111) is fixedly connected to the movable seat (56).

5. The corrosion-resistant petroleum fracturing sand filtration and protection device according to claim 1, characterized in that, A connecting key is fixed at the center of the upper end of the drive shaft (3), and auxiliary rods (31) are fixed on both sides of the connecting key. A keyway (41) adapted to the connecting key is opened at the center of the bottom wall of the filter cylinder (4). A slot (42) adapted to the auxiliary rod (31) is also opened on the bottom wall of the filter cylinder (4).

6. The corrosion-resistant petroleum fracturing sand filtration and protection device according to claim 1, characterized in that, The upper side wall of the shell (1) is provided with a feeding hopper, and the lower outer side wall of the shell (1) is provided with a discharge pipe.

7. The corrosion-resistant petroleum fracturing sand filtration and protection device according to claim 1, characterized in that, The inner wall of the housing (1) and the filter cartridge (4) are coated with an anti-corrosion coating.

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