An oil extraction system with a submersible screw pump suitable for a small casing

Abstract

The utility model provides a kind of oil extraction system of submersible screw pump suitable for small casing, belong to small casing submersible screw pump equipment technical field, it is characterized by: including protective outer tube and the anticorrosive coating being set at the outside surface four quarters of the protective outer tube, anticorrosive coating outside surface four quarters place is provided with anti-abrasion coating, the vertical row average distribution plug-in is provided with a plurality of telescopic cylinders at the right middle place of the outside surface of protective outer tube, the inside surface circumcenter of telescopic end on each telescopic cylinder is connected with clamping device, the inside surface left side of protective outer tube is connected with fixed backing plate in the corresponding position of a plurality of clamping device, the oil extraction system of submersible screw pump is penetrated and inserted in the upper surface circumcenter of protective outer tube, can prevent submersible screw pump and casing from mutual impact during use, and can clamp and fix submersible screw pump while damping.

Description

Technical Field

[0001] This utility model belongs to the technical field of submersible screw pumps with small casing, specifically relating to a submersible screw pump oil production system suitable for small casings. Background Technology

[0002] The existing small-casing submersible screw pump cannot be fitted with a shock-absorbing device between itself and the casing. During use, the submersible screw pump and the casing frequently collide and are easily damaged. In addition, rubber sleeves are used to prevent the submersible screw pump from colliding with the casing. After long-term use, the rubber sleeves age and need to be replaced, which is inconvenient for operators. Summary of the Invention

[0003] The purpose of this utility model is to prevent the submersible screw pump and the casing from colliding during use, thus preventing damage to both. Furthermore, it provides shock absorption while clamping and securing the submersible screw pump, facilitating operation and improving work efficiency. The technical solution is as follows: A submersible screw pump oil production system suitable for small casing is characterized by: a protective outer tube 1 and an anti-corrosion coating 2 disposed around the outer surface of the protective outer tube 1; an anti-wear coating 3 disposed around the outer surface of the anti-corrosion coating 2; a plurality of telescopic cylinders 4 vertically and evenly distributed at the right middle of the outer surface of the protective outer tube 1; a clamping device 5 connected to the center of the inner surface of the telescopic end of each telescopic cylinder 4; and the left side of the inner surface of the protective outer tube 1 opposite to the plurality of clamping devices 5. Each position is connected to a fixed pad 6. A submersible screw pump 7 is inserted through the center of the upper surface of the protective outer tube 1. The protective outer tube 1 includes a sleeve 1-1, supports 1-2, diagonal braces 1-3, and countersunk holes 1-4. Several supports 1-2 are evenly distributed around the inner side surface of the sleeve 1-1. Several diagonal braces 1-3 are evenly distributed vertically between each pair of adjacent supports 1-2. Several countersunk holes 1-4 are evenly distributed vertically on the right side of the outer surface of the sleeve 1-1. The telescopic cylinder 4 is inserted. Within the countersunk hole 1-4, the clamping device 5 includes a clamping plate 5-1, an insert tube 5-2, a rubber strip 5-3, and rubber pads 5-4. The insert tube 5-2 is connected to the middle of the outer surface of the clamping plate 5-1, and the rubber strip 5-3 is connected to the middle of the inner surface of the clamping plate 5-1. Several rubber pads 5-4 are evenly distributed on the inner surface of the rubber strip 5-3. The clamping plate 5-1 is semi-circular in shape and is disposed inside the sleeve 1-1. The telescopic end of the telescopic cylinder 4 is inserted into the insert tube 5-2. The clamping device 5, which is connected to the inner surface of the outer surface by a set screw, also includes a buffer pad 5-5 and anti-slip textures 5-6. The buffer pad 5-5 is inserted into the middle of the inner surface of the clamping plate 5-1. Several anti-slip textures 5-6 are evenly distributed vertically on the inner surface of the buffer pad 5-5. The position and size of the clamping plate 5-1 correspond to the position and size of the fixing pad 6. The outer surface of the buffer pad 5-5 is T-shaped. The material and shape of the fixing pad 6 are the same as those of the rubber strip 5-3.

[0004] The beneficial effects of this utility model are: it can prevent the submersible screw pump and the casing from colliding during use, prevent damage to the submersible screw pump and the casing, and clamp and fix the submersible screw pump while performing shock absorption, which facilitates operation and improves work efficiency. Attached Figure Description

[0005] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the protective outer tube 1 of this utility model; Figure 3 This is a schematic diagram of the clamping device 5 of this utility model; Figure 4This is a schematic diagram of the second embodiment of the clamping device 5 of this utility model; In the diagram: 1. Protective outer tube; 2. Anti-corrosion coating; 3. Anti-wear coating; 4. Telescopic cylinder; 5. Clamping device; 6. Fixing pad; 7. Submersible screw pump; 8. Sleeve 1-1; 9. Support bar 1-2; 10. Diagonal brace 1-3; 11. Countersunk hole 1-4; 12. Clamping plate 5-1; 13. Insert tube 5-2; 14. Rubber strip 5-3; 15. Rubber pad 5-4; 16. Buffer pad 5-5; 17. Anti-slip texture 5-6. Detailed Implementation

[0006] Reference Figures 1-4 The submersible screw pump oil production system suitable for small casing is characterized by: including a protective outer tube 1 and an anti-corrosion coating 2 disposed around the outer surface of the protective outer tube 1; an anti-wear coating 3 disposed around the outer surface of the anti-corrosion coating 2; a plurality of telescopic cylinders 4 vertically and evenly distributed at the middle right side of the outer surface of the protective outer tube 1; a clamping device 5 connected to the center of the inner side surface of the telescopic end of each telescopic cylinder 4; a fixing pad 6 connected to the left side of the inner side surface of the protective outer tube 1 at a position corresponding to the clamping device 5; and a submersible screw pump 7 penetratingly inserted at the center of the upper surface of the protective outer tube 1.

[0007] In use, first insert the protective outer tube 1 onto the outside of the submersible screw pump 7, then start the telescopic cylinder 4 to extend the telescopic end and drive the clamping device 5 to move internally. Finally, the clamping device 5 clamps the submersible screw pump 7 by cooperating with the fixed pad 6. During use, the anti-corrosion coating 2 and the anti-wear coating 3 respectively prevent the protective outer tube 1 from being corroded and wear-resistant, thus extending the service life of the protective outer tube 1.

[0008] Furthermore, the protective outer tube 1 includes a sleeve 1-1, support bars 1-2, diagonal braces 1-3, and countersunk holes 1-4. Several support bars 1-2 are evenly distributed around the inner side surface of the sleeve 1-1. Several diagonal braces 1-3 are evenly distributed vertically between each pair of adjacent support bars 1-2. Several countersunk holes 1-4 are evenly distributed vertically on the right side of the outer side surface of the sleeve 1-1. The telescopic cylinder 4 is inserted into the countersunk holes 1-4.

[0009] When in use, first insert the submersible screw pump 7 into the casing 1-1, and clamp the submersible screw pump 7 with the cooperation of the clamping device 5 and the fixing pad 6. During use, the support bar 1-2 and the diagonal brace 1-3 strengthen the support force of the casing 1-1. Insert the telescopic cylinder 4 into the countersunk hole 1-4. This can prevent the outer surface of the casing 1-1 from being flat without any protrusions.

[0010] In Embodiment 1, the clamping device 5 includes a clamping plate 5-1, an insertion tube 5-2, a rubber strip 5-3, and rubber pads 5-4. The insertion tube 5-2 is connected to the middle of the outer surface of the clamping plate 5-1, and the rubber strip 5-3 is connected to the middle of the inner surface of the clamping plate 5-1. Several rubber pads 5-4 are evenly distributed on the inner surface of the rubber strip 5-3. The clamping plate 5-1 is in a semi-circular ring shape and is disposed inside the sleeve 1-1. The telescopic end of the telescopic cylinder 4 is inserted into the outer surface of the insertion tube 5-2 and connected by a set screw.

[0011] In use, first insert the telescopic end of the telescopic cylinder 4 into the insertion tube 5-2 and tighten it with the set screw. When the telescopic end of the telescopic cylinder 4 extends, it drives the clamping plate 5-1 to move. Then, the clamping plate 5-1 and the fixing pad 6 cooperate to clamp the submersible screw pump 7. During use, the rubber strip 5-3 plays a role in shock absorption, and the rubber pad 5-3 plays a role in increasing friction. During use, it can reduce vibration and prevent the submersible screw pump 7 from moving within the sleeve 1-1.

[0012] In embodiment 2, the clamping device 5 further includes a buffer pad 5-5 and anti-slip textures 5-6. The buffer pad 5-5 is inserted into the middle of the inner surface of the clamping plate 5-1. Several anti-slip textures 5-6 are evenly distributed vertically on the inner surface of the buffer pad 5-5. The position and size of the clamping plate 5-1 correspond to the position and size of the fixing pad 6. The outer surface of the buffer pad 5-5 is T-shaped. The material and shape of the fixing pad 6 are the same as those of the adhesive strip 5-3.

[0013] When the submersible screw pump 7 is inserted into the sleeve 1-1, the submersible screw pump 7 may easily detach the rubber strip 5-3 from the clamping plate 5-1 when it scrapes against the rubber strip 5-3. To prevent the rubber strip 5-3 from detaching from the clamping plate 5-1, the buffer pad 5-5 is inserted into the side surface of the clamping plate 5-1. The T-shaped shape of the outer surface of the copper drum buffer pad 5-5 can hold the buffer pad 5-5 in place within the clamping plate 5-1, thus preventing the buffer pad 5-5 from detaching. At the same time, the anti-slip texture 5-6 can increase the friction between the buffer pad 5-5 and the submersible screw pump 7.

[0014] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A submersible screw pump oil production system suitable for small casing, characterized in that: It includes a protective outer tube (1) and an anti-corrosion coating (2) set around the outer surface of the protective outer tube (1). An anti-wear coating (3) is set around the outer surface of the anti-corrosion coating (2). Several telescopic cylinders (4) are vertically and evenly distributed at the middle right side of the outer surface of the protective outer tube (1). A clamping device (5) is connected to the center of the inner side surface of the telescopic end of each telescopic cylinder (4). A fixing pad (6) is connected to the left side of the inner side surface of the protective outer tube (1) at the corresponding position of the clamping device (5). A submersible screw pump (7) is inserted through the center of the upper surface of the protective outer tube (1).

2. The submersible screw pump oil production system suitable for small casing as described in claim 1, characterized in that: The protective outer tube (1) includes a sleeve (1-1), support bars (1-2), diagonal braces (1-3), and countersunk holes (1-4). Several support bars (1-2) are evenly distributed around the inner side surface of the sleeve (1-1). Several diagonal braces (1-3) are evenly distributed vertically between each two adjacent support bars (1-2). Several countersunk holes (1-4) are evenly distributed vertically on the right side of the outer side surface of the sleeve (1-1). The telescopic cylinder (4) is inserted into the countersunk holes (1-4).

3. The submersible screw pump oil production system suitable for small casing as described in claim 2, characterized in that: The clamping device (5) includes a clamping plate (5-1), a tube (5-2), a rubber strip (5-3), and rubber pads (5-4). The tube (5-2) is connected to the middle of the outer surface of the clamping plate (5-1), and the rubber strip (5-3) is connected to the middle of the inner surface of the clamping plate (5-1). Several rubber pads (5-4) are evenly distributed on the inner surface of the rubber strip (5-3). The clamping plate (5-1) is in the shape of a semi-circular ring. The clamping plate (5-1) is set inside the sleeve (1-1). The telescopic end of the telescopic cylinder (4) is inserted into the outer surface of the tube (5-2) and connected by a set screw.

4. The submersible screw pump oil production system suitable for small casing as described in claim 3, characterized in that: The clamping device (5) also includes a buffer pad (5-5) and anti-slip textures (5-6). The buffer pad (5-5) is inserted in the middle of the inner surface of the clamping plate (5-1). Several anti-slip textures (5-6) are evenly distributed vertically on the inner surface of the buffer pad (5-5). The position and size of the clamping plate (5-1) correspond to the position and size of the fixing pad (6).

5. The submersible screw pump oil production system suitable for small casing as described in claim 4, characterized in that: The outer surface of the buffer pad (5-5) is T-shaped, and the material and shape of the fixing pad (6) are the same as those of the adhesive strip (5-3).

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