Natural gas compressor for microbubble flooding

Abstract

The utility model discloses a natural gas compressor for microbubble flooding, relates to the technical field of natural gas compressors, and aims to solve the problems that an existing piston type compressor is large in size, the working vibration amplitude needs to be further reduced, and the overall compression efficiency needs to be improved. Two mounting seats are fixedly connected to the upper surface of the supporting base, a compression tank is fixedly mounted at the upper ends of the mounting seats, an inner partition plate is integrally connected to the middle of the interior of the compression tank, compression cavities are formed in the two symmetrical sides of the inner partition plate correspondingly, and sliding holes are formed in the two symmetrical ends of the compression tank correspondingly. And a piston rod is slidably mounted in the sliding hole, one end of the piston rod is fixedly connected with a piston block, and the piston block is slidably connected into an internal compression cavity of the compression tank body. And the effects that the working vibration is low, the overall size is compact, and the structure is stable are achieved while efficient compression can be conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas compressors, in particular to a natural gas compressor for microbubble flooding. Background Art

[0002] Natural gas flooding is a natural driving method that uses the pressure of natural gas to drive oil upward along the production well direction. It belongs to a type of elastic drive. This driving method relies on the pressure of natural gas in the gas cap. When the reservoir pressure drops, the gas cap starts to produce an oil displacement effect, which has a wide application in current oil well exploitation. To ensure the stability of oil displacement, natural gas needs to be compressed to increase the pressure, and a natural gas compressor is required in this process.

[0003] The existing piston compressors are relatively large in volume, the working vibration amplitude needs to be further reduced, and the overall compression efficiency needs to be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a natural gas compressor for microbubble flooding, which can perform efficient compression, has low working vibration, and is compact in overall volume and stable in structure.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A natural gas compressor for microbubble flooding includes a support base. Two mounting seats are fixedly connected to the upper surface of the support base. A compression tank is fixedly installed at the upper end of the mounting seat. An inner partition is integrally connected to the middle position inside the compression tank. Compression chambers are arranged on both symmetric sides of the inner partition, and a sliding hole is arranged at each symmetric end of the compression tank. A piston rod is slidably installed inside the sliding hole, and one end of the piston rod is fixedly connected to a piston block, and the piston block is slidably connected to the compression chamber inside the compression tank.

[0007] By adopting the above technical solution, the piston blocks move synchronously and in opposite directions inside the compression tank, improving the compression efficiency, reducing the vibration amplitude of the compressor, and improving the working stability.

[0008] Further, four feed ports and four discharge pipes are arranged on the side surface of the compression tank. Two of the feed ports and two of the discharge pipes correspond to one compression chamber and are distributed on both sides of the piston block. Valve mechanisms are arranged at the feed ends of the feed ports and the discharge pipes.

[0009] By adopting the above technical solution, effective management operations can be carried out on the feed ports and the discharge pipes.

[0010] Furthermore, a side bracket is fixedly installed on each of the symmetrical end faces of the compression tank body. One end of the side bracket is rotatably installed with a linkage shaft. One end of the linkage shaft is fixedly connected with a second connecting rod. One end of the second connecting rod is rotatably installed with a first connecting rod. One end of the first connecting rod is rotatably connected with one end of the piston rod. One end of the linkage shaft is fixedly connected with a first pulley.

[0011] By adopting the above technical solution, the rotation of the second connecting rod can be used to pull and push the first connecting rod, thereby driving the piston rod to perform reciprocating motion.

[0012] Furthermore, a support frame is fixedly installed on the upper surface of the support base. Two rotary mounting holes are provided at the upper end of the support frame, and a rotating shaft is rotatably installed inside the rotary mounting holes. One end of the rotating shaft is fixedly connected with a second pulley. A belt is sleeved outside the second pulley and the first pulley. One end of the rotating shaft is fixedly connected with a gear. There are two gears, and the two gears are meshed.

[0013] By adopting the above technical solution, the two second pulleys can be made to rotate synchronously and in opposite directions by using the gears, and then the kinetic energy is transmitted to the first pulley through the belt, driving the first pulley to rotate.

[0014] Furthermore, a power mechanism is fixedly installed on the upper surface of the support base, and the output end of the power mechanism is fixedly connected to the central axis position of the end face of one of the second pulleys.

[0015] By adopting the above technical solution, the power mechanism can be used to provide power for the operation of the compressor.

[0016] Furthermore, the valve mechanism includes a movable plug, a spring, and a retaining ring. The movable plug is slidably installed in a through hole on the outer surface of the compression tank body. The spring is located between the movable plug and the retaining ring, and both ends of the spring respectively abut against the adjacent side surfaces of the movable plug and the retaining ring.

[0017] By adopting the above technical solution, it can ensure that natural gas is pumped into the compression chamber and discharged after reaching a certain compression, ensuring the stable progress of the entire compression process.

[0018] In summary, the beneficial technical effects of the present utility model are:

[0019] The utility model can drive the piston block to move inside the compression tank body by the telescopic movement of the piston rod, and then compress the natural gas inside the compression cavity. Since the two compression cavities and the two piston rods are coaxially distributed, and when compressing natural gas, the two piston blocks approach or move away from each other synchronously, this kind of movement can greatly reduce the vibration during the operation of the compressor, effectively improve the working stability of the compressor. At the same time, each movement of the two piston blocks can compress the natural gas inside the two compression cavities, with high compression efficiency, high overall practicability, and the whole device has a small volume, a compact and stable structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the first perspective view of the three-dimensional structure of the utility model;

[0021] Figure 2 is the second perspective view of the three-dimensional structure of the utility model;

[0022] Figure 3 is the internal structure diagram of the utility model;

[0023] Figure 4 is the utility model Figure 3 enlarged view of part A.

[0024] In the figure: 1, support base; 2, mounting seat; 3, compression tank body; 4, feed inlet; 5, discharge pipe; 6, side bracket; 7, piston rod; 8, first connecting rod; 9, second connecting rod; 10, linkage shaft; 11, first pulley; 12, belt; 13, power mechanism; 14, support frame; 15, second pulley; 16, gear; 17, piston block; 18, internal partition; 19, valve mechanism; 20, movable plug; 21, spring; 22, retaining ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The following further details the method of the utility model with reference to the accompanying drawings.

[0026] Referring to Figure 1 、 Figure 3, a natural gas compressor for microbubble flooding, includes a support base 1. Two mounting seats 2 are fixedly connected to the upper surface of the support base 1. The upper ends of the mounting seats 2 are fixedly installed with a compression tank body 3. An inner partition 18 is integrally connected at the middle position inside the compression tank body 3. Compression chambers are arranged on both symmetric sides of the inner partition 18. A slide hole is provided at each of the symmetric two ends of the compression tank body 3, and a piston rod 7 is slidably installed inside the slide hole. One end of the piston rod 7 is fixedly connected to a piston block 17. The piston block 17 is slidably connected inside the compression chamber of the compression tank body 3. Among them, the telescopic movement of the piston rod 7 can drive the piston block 17 to move inside the compression tank body 3, thereby compressing the natural gas inside the compression chamber. Since the two compression chambers and the two piston rods 7 are coaxially distributed, and when compressing natural gas, the two piston blocks 17 move synchronously closer to or away from each other. This kind of movement can greatly reduce the vibration during the operation of the compressor and effectively improve the working stability of the compressor. At the same time, each movement of the two piston blocks 17 can compress the natural gas inside the two compression chambers. The compression operation can be carried out continuously, with high compression efficiency and high overall practicability.

[0027] Refer to Figure 3 , Figure 4 , four feed ports 4 and four discharge pipes 5 are provided on the side surface of the compression tank body 3. Two feed ports 4 and two discharge pipes 5 correspond to one compression chamber and are distributed on both sides of the piston block 17. Valve mechanisms 19 are provided at the feed ends of the feed ports 4 and the discharge pipes 5. The valve mechanism 19 includes a movable plug 20, a spring 21, and a retaining ring 22. The movable plug 20 is slidably installed inside the through hole on the outer surface of the compression tank body 3. The spring 21 is located between the movable plug 20 and the retaining ring 22, and both ends of the spring 21 respectively abut against the adjacent side surfaces of the movable plug 20 and the retaining ring 22. Among them, the movement of the piston block 17 inside the compression chamber can be used to make one side of the piston block 17 in a negative pressure state, while compressing the natural gas on the other side. During this process, the valve mechanism 19 inside the feed port 4 in the negative pressure state opens, and natural gas enters. The valve mechanism 19 inside the feed port 4 in the high-pressure area closes. When the specified pressure value is reached, the valve mechanism 19 inside the discharge pipe 5 in the high-pressure area is pushed open to discharge the compressed natural gas, ensuring that the entire compression can be carried out continuously without interruption. Among them, the deformation coefficient of the spring 21 inside the discharge pipe 5 is greater than the deformation coefficient of the spring 21 inside the feed port 4.

[0028] Refer to Figure 1 , Figure 2, on the symmetric end faces of the compression tank body 3, a side bracket 6 is fixedly installed respectively. One end of the side bracket 6 is rotatably installed with a linkage shaft 10. One end of the linkage shaft 10 is fixedly connected with a second connecting rod 9. One end of the second connecting rod 9 is rotatably installed with a first connecting rod 8. One end of the first connecting rod 8 is rotatably connected with one end of the piston rod 7. One end of the linkage shaft 10 is fixedly connected with a first pulley 11. On the upper surface of the support base 1, a support frame 14 is fixedly installed. At the upper end of the support frame 14, there are two rotation installation holes, and a rotating shaft is rotatably installed inside the rotation installation holes. One end of the rotating shaft is fixedly connected with a second pulley 15. A belt 12 is sleeved outside the second pulley 15 and the first pulley 11. One end of the rotating shaft is fixedly connected with a gear 16. There are two gears 16, and the two gears 16 are meshed and connected. On the upper surface of the support base 1, a power mechanism 13 is fixedly installed. The output end of the power mechanism 13 is fixedly connected to the central axis position of the end face of one of the second pulleys 15. When compressing, the power mechanism 13 is used to drive one of the second pulleys 15 to rotate. Then, under the linkage of the two gears 16, the other second pulley 15 rotates synchronously in the reverse direction. Then, under the linkage of the belt 12, the two first pulleys 11 rotate synchronously in the reverse direction. The rotation of the first pulley 11 drives the linkage shaft 10 and the second connecting rod 9 to rotate. Since the two ends of the first connecting rod 8 are respectively rotatably connected with the second connecting rod 9 and one end of the piston rod 7, the rotation of the second connecting rod 9 can drive the piston rod 7 to perform reciprocating motion, ensuring that the compression operation can be effectively carried out.

[0029] Working principle: When in use, first install the compressor at the designated position, then connect the external air supply pipeline and gas transmission pipeline, and then start the power mechanism 13. Use the power mechanism 13 to drive one of the second pulleys 15 to rotate. Then, under the linkage of the two gears 16, the other second pulley 15 rotates synchronously in the reverse direction. Then, under the linkage of the belt 12, the two first pulleys 11 rotate synchronously in the reverse direction. The rotation of the first pulley 11 drives the linkage shaft 10 and the second connecting rod 9 to rotate. Since the two ends of the first connecting rod 8 are respectively rotatably connected to the second connecting rod 9 and one end of the piston rod 7, the rotation of the second connecting rod 9 can drive the piston rod 7 to reciprocate. The telescopic movement of the piston rod 7 drives the piston block 17 to move inside the compression tank 3. When the piston block 17 moves inside the compression chamber, one side of the piston block 17 is in a negative pressure state, and at the same time, the natural gas on the other side is compressed. During this process, the valve mechanism 19 inside the feed port 4 under the negative pressure state opens, and natural gas enters. The valve mechanism 19 inside the feed port 4 in the high-pressure area closes. When the specified pressure value is reached, the valve mechanism 19 inside the discharge pipe 5 in the high-pressure area is pushed open, and the compressed natural gas is discharged. During the compression process, since the two compression chambers and the two piston rods 7 are coaxially distributed, and when compressing natural gas, the two piston blocks 17 approach or move away from each other synchronously. This kind of movement can greatly reduce the vibration of the compressor during operation, effectively improve the working stability of the compressor. At the same time, each movement of the two piston blocks 17 can compress the natural gas inside the two compression chambers. The compression operation can continue, and the compression efficiency is high.

[0030] The embodiments of this specific implementation mode are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. Natural gas compressor for microbubble flooding, comprising a support base (1), characterized in that: On the upper surface of the support base (1), two mounting seats (2) are fixedly connected. At the upper ends of the mounting seats (2), a compression tank body (3) is fixedly installed. At the middle position inside the compression tank body (3), an inner partition plate (18) is integrally connected. On both symmetric sides of the inner partition plate (18), compression chambers are provided. At both symmetric ends of the compression tank body (3), a sliding hole is provided, and a piston rod (7) is slidably installed inside the sliding hole. One end of the piston rod (7) is fixedly connected to a piston block (17), and the piston block (17) is slidably connected inside the compression chamber of the compression tank body (3).

2. The natural gas compressor for microbubble flooding according to claim 1, characterized in that: On the side surface of the compression tank body (3), four feed ports (4) and four discharge pipes (5) are provided. Two of the feed ports (4) and two of the discharge pipes (5) correspond to one compression chamber and are distributed on both sides of the piston block (17). At the feed ends of the feed ports (4) and the discharge pipes (5), valve mechanisms (19) are provided.

3. The natural gas compressor for microbubble flooding according to claim 1, wherein: On both symmetric end faces of the compression tank body (3), a side bracket (6) is fixedly installed respectively. At one end of the side bracket (6), a linkage shaft (10) is rotatably installed. One end of the linkage shaft (10) is fixedly connected to a second connecting rod (9). At one end of the second connecting rod (9), a first connecting rod (8) is rotatably installed. One end of the first connecting rod (8) is rotatably connected to one end of the piston rod (7). One end of the linkage shaft (10) is fixedly connected to a first pulley (11).

4. The natural gas compressor for microbubble flooding according to claim 3, characterized in that: On the upper surface of the support base (1), a support frame (14) is fixedly installed. At the upper end of the support frame (14), two rotation installation holes are provided, and a rotating shaft is rotatably installed inside the rotation installation holes. One end of the rotating shaft is fixedly connected to a second pulley (15). A belt (12) is sleeved outside the second pulley (15) and the first pulley (11). One end of the rotating shaft is fixedly connected to a gear (16). There are two gears (16), and the two gears (16) are meshed and connected.

5. The natural gas compressor for microbubble flooding according to claim 4, characterized in that: On the upper surface of the support base (1), a power mechanism (13) is fixedly installed. The output end of the power mechanism (13) is fixedly connected to the middle axis position of the end face of one of the second pulleys (15).

6. The natural gas compressor for microbubble flooding according to claim 2, wherein: The valve mechanism (19) includes a movable plug (20), a spring (21), and a retaining ring (22). The movable plug (20) is slidably installed inside the through hole on the outer surface of the compression tank body (3). The spring (21) is located between the movable plug (20) and the retaining ring (22), and both ends of the spring (21) respectively abut against the adjacent side surfaces of the movable plug (20) and the retaining ring (22).

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