Oil field nitrogen injection device

Abstract

The utility model relates to the technical field of oil field nitrogen injection devices, in particular to an oil field nitrogen injection device which comprises an air compressor, a fan is installed at the top end of the air compressor, a plurality of air inlet holes are formed in the bottom end of one side of the air compressor, a filtering structure is arranged at the bottom end of one side of the air compressor, and the filtering structure comprises an outer frame and a connecting frame. An outer frame is fixedly connected to the bottom end of one side of the air compressor, a connecting frame is clamped to one side of the outer frame, a filter screen is fixedly connected to the connecting frame, two grabbing blocks are fixedly connected to the two sides of the connecting frame, and a fixing structure is arranged on the outer frame. Dust can be prevented from entering the air compressor during heat dissipation of the air compressor, so that cleanness of the interior of the air compressor is guaranteed, the situation that the heat dissipation speed of internal parts of the air compressor is reduced due to the fact that the dust is attached to the surfaces of the internal parts of the air compressor is avoided, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to an oilfield nitrogen injection device, in particular to an oilfield nitrogen injection device, belonging to the technical field of oilfield nitrogen injection devices. Background Art

[0002] Oilfield nitrogen injection is a method of improving oil recovery efficiency by injecting nitrogen into oil wells. Nitrogen injection can form nitrogen foam under oil layer conditions. These foams can improve oil displacement efficiency, adjust liquid absorption profile, block crossflow, and pressurize water cones. In the process of steam intake and discharge of heavy oil wells, nitrogen injection accompanied by steam can also play a role in heat insulation and drainage, and increase the volume of steam sweep. This is an important oil increase measure for tapping the potential of old wells. Air compressors are needed in the oilfield nitrogen injection system. Compressed air can be provided by air compressors as the raw material for membrane separation and nitrogen production. Generally, air compressors need to dissipate heat during use. Therefore, multiple air inlets are opened on one side of the air compressor, and a fan is installed on the other side or top of the air compressor. The fan can be started for heat dissipation. Under the action of the fan, external air will enter the interior of the air compressor from the air inlet, and then circulate inside the air compressor. During the circulation process, the heat inside the air compressor will be taken away, thereby achieving heat dissipation of the air compressor.

[0003] However, while traditional air compressors are dissipating heat, dust in the air will also enter the interior of the air compressor through the air inlet. After entering the interior of the air compressor, the dust is easy to adhere to the surface of the internal components of the air compressor, thereby reducing the speed of heat dissipation of the internal components of the air compressor, and also causing adverse effects on the operation of the air compressor, making it inconvenient to use. Utility Model Content

[0004] The purpose of the utility model is to provide an oilfield nitrogen injection device in order to solve the above-mentioned problem, which can prevent dust from entering the interior of the air compressor when the air compressor dissipates heat, thereby ensuring the cleanliness of the interior of the air compressor, and preventing dust from adhering to the surface of the internal components of the air compressor and reducing the heat dissipation speed of the internal components of the air compressor, thereby making it more convenient to use.

[0005] The utility model achieves the above-mentioned purpose through the following technical scheme: an oilfield nitrogen injection device, comprising an air compressor, a fan is installed at the top of the air compressor, a plurality of air inlet holes are arranged at the bottom end of one side of the air compressor, a filter structure is arranged at the bottom end of one side of the air compressor, the filter structure comprises an outer frame and a connecting frame, the bottom end of one side of the air compressor is fixedly connected with the outer frame, a connecting frame is engaged with one side of the outer frame, a filter net is fixedly connected to the connecting frame, two grab blocks are fixedly connected to both sides of the connecting frame, and a fixing structure is arranged on the outer frame.

[0006] Preferably, a sealing gasket is engaged on the outer frame, and the sealing gasket abuts against the connecting frame.

[0007] Preferably, the end of the gripping block extends to the outside of the outer frame, and the cross-section of the outer frame is in a "mouth"-shaped structure.

[0008] Preferably, the fixed structure includes a connecting block and a rotating rod, two connecting blocks are fixedly connected to the outer frame, a rotating rod is rotatably connected to the connecting block, one end of the two rotating rods is fixedly connected to the same connecting shaft, and a plurality of first springs are fixedly connected to the rotating rod, and the first springs abut against the grab block.

[0009] Preferably, a sliding rod is slidably connected to the outer frame, one end of the sliding rod is fixedly connected to a stopper, and the stopper is in contact with the connecting shaft.

[0010] Preferably, a second spring is sleeved on the outside of the sliding rod, one end of the second spring is fixedly connected to the stopper, and the other end of the second spring is fixedly connected to the outer frame.

[0011] Preferably, the cross-section of the end of the stopper is a trapezoidal structure, and the cross-section of the stopper is an L-shaped structure.

[0012] Preferably, the cross-section of the end of the rotating rod is in an L-shaped structure, and the multiple first springs located on the same rotating rod are linearly and equidistantly distributed.

[0013] Preferably, the air compressor is provided with a protective structure, which includes a protective frame and a baffle. The air compressor is detachably connected to the protective frame by a plurality of bolts, two baffles are rotatably connected to the protective frame, and a baffle rod is fixedly connected to the protective frame, and one end of the two baffles interferes with the same baffle rod.

[0014] The beneficial effects of the utility model are as follows: during use, the fan can be started, and under the action of the fan, external air will enter the interior of the air compressor from multiple air inlet holes. The air can filter dust in the air through the filter during the flow, thereby preventing dust from entering the interior of the air compressor with the air flow, effectively ensuring the cleanliness of the interior of the air compressor, and preventing dust from adhering to the surfaces of the internal components of the air compressor and reducing the heat dissipation rate of the internal components of the air compressor, thereby being more convenient to use, and the fast disassembly of the connecting frame can be achieved through the fixed structure, and the filter can be disassembled together with the connecting frame. After the filter is disassembled, it is convenient to clean the dust attached to the surface thereof, and the clogging of the mesh of the filter can be avoided by regular cleaning of the filter, thereby effectively ensuring the dust filtering effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 for Figure 1 An enlarged schematic diagram of part A is shown;

[0017] Figure 3 This is a schematic diagram of the connection structure between the air compressor and the fan of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection structure between the connection block and the rotating rod of the utility model;

[0019] Figure 5 for Figure 4 An enlarged schematic diagram of part B is shown;

[0020] Figure 6 It is a schematic diagram of the connection structure between the protection frame and the baffle of the utility model.

[0021] In the figure: 1. air compressor; 2. filtering structure; 201. outer frame; 202. connecting frame; 203. filter screen; 204. grab block; 205. sealing gasket; 3. fixing structure; 301. connecting block; 302. rotating rod; 303. first spring; 304. connecting shaft; 305. sliding rod; 306. block; 307. second spring; 4. fan; 5. protective structure; 501. protective frame; 502. baffle; 503. baffle rod; 6. air inlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an oilfield nitrogen injection device comprises an air compressor 1, a fan 4 is installed at the top of the air compressor 1, a plurality of air inlet holes 6 are arranged at the bottom end of one side of the air compressor 1, a filter structure 2 is arranged at the bottom end of one side of the air compressor 1, the filter structure 2 comprises an outer frame 201 and a connecting frame 202, the outer frame 201 is fixedly connected to the bottom end of one side of the air compressor 1, a connecting frame 202 is engaged with one side of the outer frame 201, a filter screen 203 is fixedly connected to the connecting frame 202, two gripping blocks 204 are fixedly connected to both sides of the connecting frame 202, and a fixing structure 3 is arranged on the outer frame 201.

[0024] As a new technical optimization solution of the utility model, Figure 5As shown, a sealing gasket 205 is engaged with the outer frame 201 , and the sealing gasket 205 abuts against the connecting frame 202 , thereby improving the sealing performance between the connecting frame 202 and the outer frame 201 .

[0025] As a new technical optimization solution of the utility model, Figure 1 and Figure 2 As shown, the end of the gripping block 204 extends to the outside of the outer frame 201 , and the cross-section of the outer frame 201 is in a “mouth”-shaped structure, so the outer frame 201 can be conveniently moved by holding the gripping block 204 .

[0026] As a new technical optimization solution of the utility model, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the fixed structure 3 includes a connecting block 301 and a rotating rod 302, the outer frame 201 is fixedly connected to two connecting blocks 301, the connecting block 301 is rotatably connected to the rotating rod 302, one end of the two rotating rods 302 is fixedly connected to the same connecting shaft 304, a plurality of first springs 303 are fixedly connected to the rotating rod 302, the first springs 303 abut against the grab block 204, a sliding rod 305 is slidably connected to the outer frame 201, one end of the sliding rod 305 is fixedly connected to a stopper 306, the stopper 306 abuts against the connecting shaft 304, a second spring 307 is sleeved on the outside of the sliding rod 305, one end of the second spring 307 is fixedly connected to the stopper 306, and the other end of the second spring 307 is fixedly connected to the outer frame 201, the cross-section of the end of the stopper 306 is a trapezoidal structure, and the cross-section of the stopper 306 is an L-shaped structure, so that the filter screen 203 can be quickly disassembled.

[0027] As a technical optimization solution of the utility model, Figure 4 and Figure 5 As shown, the cross-section of the end of the rotating rod 302 is L-shaped, and the multiple first springs 303 located on the same rotating rod 302 are linearly and equidistantly distributed. Therefore, under the action of the multiple first springs 303, the connecting frame 202 and the outer frame 201 can be pressed tightly, thereby improving the sealing between the connecting frame 202 and the outer frame 201.

[0028] As a technical optimization solution of the utility model, Figure 1 and Figure 6As shown, the air compressor 1 is provided with a protective structure 5, and the protective structure 5 includes a protective frame 501 and a baffle 502. The air compressor 1 is detachably connected to the protective frame 501 by a plurality of bolts, and two baffles 502 are rotatably connected to the protective frame 501. A baffle rod 503 is fixedly connected to the protective frame 501, and one end of the two baffles 502 is in contact with the same baffle rod 503. Therefore, the fan 4 can be shielded and protected by the two baffles 502 and the protective frame 501, thereby preventing the fan 4 from being exposed to the air for a long time, ensuring the cleanliness of the surface of the fan 4 while reducing the probability of damage.

[0029] When the utility model is in use, the fan 4 can be started during use. Under the action of the fan 4, the two baffles 502 will rotate, so that a gap will appear between the baffle 502 and the protective frame 501, thereby facilitating the discharge of gas. The fan 4 can be shielded and protected by the two baffles 502 and the protective frame 501, thereby preventing the fan 4 from being exposed to the air for a long time, ensuring the cleanliness of the surface of the fan 4 while reducing the probability of damage. Under the action of the fan 4, external air will enter the interior of the air compressor 1 from the multiple air inlet holes 6. During the flow of air, the dust in the air can be filtered through the filter net 203, thereby preventing dust from entering the interior of the air compressor 1 with the airflow, effectively ensuring the cleanliness of the interior of the air compressor 1, and preventing dust from adhering to the surfaces of the internal components of the air compressor 1 and reducing the internal components of the air compressor 1. The speed of heat dissipation of the parts is improved, thereby making it more convenient to use. When the filter screen 203 needs to be disassembled, the sliding bar 305 can be pulled, and the sliding bar 305 drives the stopper 306 to move away from the connecting shaft 304, and the second spring 307 extends. When the stopper 306 does not resist the connecting shaft 304, the two rotating rods 302 can be rotated at the same time by holding the connecting shaft 304, and the rotating rod 302 will drive multiple first springs 303 to move. When multiple first springs 303 deviate from one end of the connecting frame 202, the connecting frame 202 can be removed from the outer frame 201, and the filter screen 203 can be disassembled together with the connecting frame 202. After the filter screen 203 is disassembled, it is convenient to clean the dust attached to the surface thereof. By regularly cleaning the filter screen 203, the mesh of the filter screen 203 can be prevented from being blocked, thereby effectively ensuring the dust filtering effect.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An oilfield nitrogen injection device, comprising an air compressor (1), characterized in that: A fan (4) is installed at the top of the air compressor (1); a plurality of air inlet holes (6) are provided at the bottom of one side of the air compressor (1); a filter structure (2) is provided at the bottom of one side of the air compressor (1); the filter structure (2) comprises an outer frame (201) and a connecting frame (202); the bottom of one side of the air compressor (1) is fixedly connected to the outer frame (201); one side of the outer frame (201) is engaged with the connecting frame (202); a filter net (203) is fixedly connected to the connecting frame (202); two gripping blocks (204) are fixedly connected to both sides of the connecting frame (202); and a fixing structure (3) is provided on the outer frame (201).

2. The oilfield nitrogen injection device according to claim 1, characterized in that: A sealing gasket (205) is clamped on the outer frame (201), and the sealing gasket (205) abuts against the connecting frame (202).

3. The oilfield nitrogen injection device according to claim 1, characterized in that: The end of the gripping block (204) extends to the outside of the outer frame (201), and the cross-section of the outer frame (201) is in a "mouth"-shaped structure.

4. The oilfield nitrogen injection device according to claim 1, characterized in that: The fixed structure (3) comprises a connecting block (301) and a rotating rod (302); two connecting blocks (301) are fixedly connected to the outer frame (201); the connecting blocks (301) are rotatably connected to the rotating rods (302); one end of the two rotating rods (302) is fixedly connected to the same connecting shaft (304); a plurality of first springs (303) are fixedly connected to the rotating rods (302); the first springs (303) are in contact with the gripping blocks (204).

5. The oilfield nitrogen injection device according to claim 4, characterized in that: A sliding rod (305) is slidably connected to the outer frame (201), and a stopper (306) is fixedly connected to one end of the sliding rod (305), and the stopper (306) is in contact with the connecting shaft (304).

6. The oilfield nitrogen injection device according to claim 5, characterized in that: A second spring (307) is sleeved on the outside of the sliding rod (305), one end of the second spring (307) is fixedly connected to the stopper (306), and the other end of the second spring (307) is fixedly connected to the outer frame (201).

7. The oilfield nitrogen injection device according to claim 5, characterized in that: The cross section of the end of the stopper (306) is a trapezoidal structure, and the cross section of the stopper (306) is an L-shaped structure.

8. The oilfield nitrogen injection device according to claim 4, characterized in that: The cross section of the end of the rotating rod (302) is in an L-shaped structure, and the plurality of first springs (303) located on the same rotating rod (302) are linearly and equidistantly distributed.

9. The oilfield nitrogen injection device according to claim 1, characterized in that: The air compressor (1) is provided with a protective structure (5), and the protective structure (5) includes a protective frame (501) and a baffle (502). The air compressor (1) is detachably connected to the protective frame (501) via a plurality of bolts, and two baffles (502) are rotatably connected to the protective frame (501). A baffle rod (503) is fixedly connected to the protective frame (501), and one end of the two baffles (502) is in contact with the same baffle rod (503).

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