Air foam flooding output gas concentration detection device with alarm mechanism

Abstract

The utility model discloses an air foam flooding output gas concentration detection device with an alarm mechanism, relates to the technical field of oil field engineering, and provides the following scheme aiming at the problems proposed in the background technology: the air foam flooding output gas concentration detection device comprises an upper pipe, a lower pipe and a detection pipe, the surface of the detection pipe is provided with a through hole, and the inner wall of the through hole is inserted with a detection assembly. Through the arrangement of the detection assembly, during use, the natural gas concentration in the upper pipe and the lower pipe can be detected in real time through the natural gas detector, when the natural gas concentration is higher than a preset threshold value, the controller automatically opens the electromagnetic valve, the audible and visual alarm and the driving motor, and after the electromagnetic valve is opened, part of natural gas in the upper pipe and the lower pipe is led out; part of natural gas gushing out of the lower pipe is guided by the strip-shaped baffle and then rapidly enters the exhaust branch pipe, the pressure relief efficiency is improved, the audible and visual alarm gives out buzzing sound and light to remind workers to treat the natural gas in the pipeline in time, and the safety is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to oilfield engineering technical field especially, relate to a kind of air foam flooding oil production gas concentration detection device with alarm mechanism. BACKGROUND

[0002] Oil reservoir is the trap of gathering a certain amount of oil and gas. If only oil is gathered in the trap, it is called pure oil reservoir (or oil reservoir), and if only natural gas is gathered, it is called pure gas reservoir (or gas reservoir). When the amount of oil and gas gathered is sufficient for industrial exploitation, it is called industrial oil and gas reservoir, otherwise, it is non-industrial oil and gas reservoir. Oil and gas reservoir is the basic unit of oil and gas accumulation in the crust. An oil and gas reservoir exists in an independent trap, and oil and gas has a certain distribution rule and unified pressure system in it. At present, in order to improve the recovery efficiency of oil reservoir, air foam flooding technology is used in oil layer to recover and process oil reservoir.

[0003] At present, during the air foam flooding process, the produced gas in the oil displacement process is transported through a pipeline. However, at the present stage, when the pipeline is used to transport the produced gas, the concentration of natural gas in the pipeline cannot be detected in real time, which leads to the fact that once the concentration of natural gas in the pipeline is too high, safety accidents such as explosion or fire are likely to occur, and there is a certain safety hazard. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides an air foam flooding oil production gas concentration detection device with an alarm mechanism.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] An air foam flooding oil production gas concentration detection device with an alarm mechanism comprises an upper pipe, a lower pipe and a detection pipe. The opposite ends of the upper pipe and the lower pipe are fixedly connected with first flanges. The top end and the bottom end of the detection pipe are fixedly connected with second flanges. Fastening bolts are threadedly connected between the first flanges and the second flanges. A through hole is formed in the surface of the detection pipe. A detection assembly is inserted into the inner wall of the through hole. The detection assembly comprises an arc-shaped frame. Arc-shaped mounting plates are fixedly connected to the upper and lower surfaces of the arc-shaped frame. Two locking bolts are threadedly connected to the side surfaces of the two arc-shaped mounting plates. An arc-shaped groove is formed in the inner wall of the through hole. A rubber sealing ring is fixedly connected to the surface of the arc-shaped frame. A natural gas detector is fixedly connected to the left side of the arc-shaped frame. A controller is fixedly connected to the inner wall of the arc-shaped frame. An audible and visual alarm is fixedly connected to the right side of the arc-shaped frame. An exhaust branch pipe is fixedly connected to the surface of the detection pipe. An electromagnetic valve is fixedly connected to the surface of the exhaust branch pipe.

[0007] The inner wall of the detection pipe is rotationally connected with a round rod, the surface of the round rod is fixedly connected with a strip baffle, the surface of the round rod is fixedly connected with a first bevel gear, the surface of the detection pipe is fixedly connected with a positioning frame, the inner wall of the positioning frame is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a connecting rod, and the end, away from the driving motor, of the connecting rod is fixedly connected with a second bevel gear.

[0008] Preferably, the surface of the detection pipe is provided with four thread grooves matched with the locking bolts.

[0009] Preferably, the controller is electrically connected with the natural gas detector, the sound-light alarm, the electromagnetic valve and the driving motor.

[0010] Preferably, the width of the strip baffle is smaller than the inner diameter of the detection pipe, so that the strip baffle can rotate in the detection pipe.

[0011] Preferably, the strip baffle is located directly above the exhaust branch pipe in the detection pipe, and the strip baffle can block and guide the part of natural gas from the lower pipe to enter the exhaust branch pipe, thereby improving the pressure relief efficiency.

[0012] Preferably, the end, away from the driving motor, of the connecting rod extends to the inside of the detection pipe, and the second bevel gear is engaged with the first bevel gear, so that the connecting rod drives the second bevel gear to rotate after the driving motor is started, thereby driving the round rod to rotate through the first bevel gear, and changing the offset position of the strip baffle.

[0013] The air foam oil displacement production gas concentration detection device with the alarm mechanism has the advantages that:

[0014] 1. When in use, the natural gas detector can be used to detect the natural gas concentration in the upper pipe and the lower pipe in real time, the controller automatically opens the electromagnetic valve, the sound-light alarm and the driving motor when the natural gas concentration is higher than the preset threshold value, the electromagnetic valve can guide part of the natural gas in the upper pipe and the lower pipe out after being opened, thereby reducing the pressure in the pipeline and avoiding explosion, the driving motor drives the first bevel gear and the round rod to rotate through the connecting rod and the second bevel gear, thereby driving the strip baffle to shield part of the position in the detection pipe, making part of the natural gas from the lower pipe enter the exhaust branch pipe rapidly after being guided by the strip baffle, improving the pressure relief efficiency, thereby improving the protection effect on the pipeline, and the sound-light alarm emits a buzzing sound and light, reminding the staff to process the natural gas in the pipeline in time, and the safety is higher. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A three-dimensional structure schematic view of the air foam oil displacement production gas concentration detection device with the alarm mechanism is provided.

[0016] Figure 2 A schematic diagram of a vertical section structure of the air foam oil displacement produced gas concentration detection device with an alarm mechanism is provided in the utility model.

[0017] Figure 3 A schematic diagram of a vertical section structure of the air foam oil displacement produced gas concentration detection device with an alarm mechanism is provided in the utility model.

[0018] In the figure: 1, upper pipe; 2, lower pipe; 3, detection pipe; 4, first flange; 5, second flange; 6, fastening bolt; 7, arc-shaped frame; 8, arc-shaped mounting plate; 9, locking bolt; 10, rubber sealing ring; 11, natural gas detector; 12, controller; 13, audible and visual alarm; 14, exhaust branch pipe; 15, electromagnetic valve; 16, round rod; 17, strip baffle; 18, first bevel gear; 19, positioning frame; 20, driving motor; 21, connecting rod; 22, second bevel gear. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0020] Embodiment 1, refer to Figure 1 , Figure 2 and Figure 3 An air foam oil displacement produced gas concentration detection device with an alarm mechanism, comprising an upper pipe 1, a lower pipe 2 and a detection pipe 3, the opposite ends of the upper pipe 1 and the lower pipe 2 are fixedly connected with first flanges 4, the top end and the bottom end of the detection pipe 3 are fixedly connected with second flanges 5, fastening bolts 6 are threadedly connected between the first flanges 4 and the second flanges 5, a through hole is formed in the surface of the detection pipe 3, and a detection assembly is inserted into the inner wall of the through hole.

[0021] The detection assembly comprises an arc-shaped frame 7, the upper and lower surfaces of the arc-shaped frame 7 are fixedly connected with arc-shaped mounting plates 8, the sides of the two arc-shaped mounting plates 8 are threadedly connected with two locking bolts 9, four threaded grooves matched with the locking bolts 9 are formed in the surface of the detection pipe 3, an arc-shaped groove is formed in the inner wall of the through hole, the surface of the arc-shaped frame 7 is fixedly connected with a rubber sealing ring 10, the left side of the arc-shaped frame 7 is fixedly connected with a natural gas detector 11, the inner wall of the arc-shaped frame 7 is fixedly connected with a controller 12, the right side of the arc-shaped frame 7 is fixedly connected with an audible and visual alarm 13, the surface of the detection pipe 3 is fixedly connected with an exhaust branch pipe 14, and the surface of the exhaust branch pipe 14 is fixedly connected with an electromagnetic valve 15.

[0022] The natural gas detector 11 can detect the concentration of natural gas in the lower pipe 2 and the upper pipe 1 in real time. When the concentration of natural gas exceeds the monitoring threshold of the natural gas detector 11, the natural gas detector 11 sends an electrical signal to the controller 12, and the controller 12 automatically opens the solenoid valve 15 and the audible and visual alarm 13. The audible and visual alarm 13 emits a buzzing sound and a light, reminding the staff to deal with the natural gas in the pipeline in time. At the same time, it can also allow the natural gas in the pipeline to be discharged through the exhaust branch pipe 14, thereby reducing the pressure in the pipeline and avoiding the situation of explosion caused by excessive pressure, thus making it safer.

[0023] A round rod 16 is rotatably connected to the inner wall of the detection tube 3. A strip baffle 17 is fixedly connected to the surface of the round rod 16. The width of the strip baffle 17 is smaller than the inner diameter of the detection tube 3. The strip baffle 17 is located inside the detection tube 3 directly above the exhaust branch pipe 14. A first bevel gear 18 is fixedly connected to the surface of the round rod 16.

[0024] A positioning frame 19 is fixedly connected to the surface of the detection tube 3. A drive motor 20 is fixedly connected to the inner wall of the positioning frame 19. The controller 12 is electrically connected to the natural gas detector 11, the audible and visual alarm 13, the solenoid valve 15 and the drive motor 20 respectively. A connecting rod 21 is fixedly connected to the output end of the drive motor 20. A second bevel gear 22 is fixedly connected to the end of the connecting rod 21 away from the drive motor 20. The end of the connecting rod 21 away from the drive motor 20 extends into the interior of the detection tube 3, and the second bevel gear 22 meshes with the first bevel gear 18.

[0025] After the drive motor 20 starts, it can drive the second bevel gear 22 to rotate through the connecting rod 21. The second bevel gear 22 can drive the round rod 16 to rotate through the first bevel gear 18, thereby causing the strip baffle 17 to shift to the right. At this time, some of the natural gas flowing out from the lower pipe 2 is blocked by the strip baffle 17 and can quickly enter the exhaust branch pipe 14, thereby quickly reducing the gas pressure in the pipeline and providing good protection for the pipeline.

[0026] Working principle: First, the second flange 5 on the detection pipe 3 is aligned with the first flanges 4 at both ends of the upper pipe 1 and lower pipe 2. The upper pipe 1 and lower pipe 2 are connected to the detection pipe 3 using fastening bolts 6. During normal use, the gas produced by air foam-driven oil displacement is transported through the upper pipe 1 and lower pipe 2. When the natural gas concentration in the lower pipe 2 exceeds the threshold of the natural gas detector 11, the controller 12 receives the electrical signal sent by the natural gas detector 11 and automatically opens the audible and visual alarm 13, the solenoid valve 15, and the drive motor 20. The audible and visual alarm 13 generates a buzzer sound and activates the alarm. The light reminds staff to promptly process the natural gas in the pipeline. After the drive motor 20 starts, it can drive the second bevel gear 22 to rotate through the connecting rod 21. The second bevel gear 22 then drives the first bevel gear 18 and the round rod 16 to rotate. The round rod 16 then drives the strip baffle 17 to rotate, so that the strip baffle 17 can guide the natural gas surging up from the lower pipe 2, allowing some of the natural gas to quickly enter the exhaust branch pipe 14, thereby reducing the pressure in the lower pipe 2 and the upper pipe 1, ensuring that the pipeline will not be damaged or exploded, thus increasing safety.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An air foam-driven oil production gas concentration detection device with an alarm mechanism, comprising an upper pipe (1), a lower pipe (2), and a detection pipe (3), wherein a first flange (4) is fixedly connected to the opposite ends of the upper pipe (1) and the lower pipe (2), and a second flange (5) is fixedly connected to the top and bottom ends of the detection pipe (3), and a fastening bolt (6) is threaded between the first flange (4) and the second flange (5), and a through hole is opened on the surface of the detection pipe (3), and a detection component is inserted into the inner wall of the through hole, characterized in that, The detection assembly includes an arc-shaped frame (7), with arc-shaped mounting plates (8) fixedly connected to both the upper and lower surfaces of the arc-shaped frame (7). Two locking bolts (9) are threadedly connected to the sides of the two arc-shaped mounting plates (8). An arc-shaped groove is provided on the inner wall of the through hole. A rubber sealing ring (10) is fixedly connected to the surface of the arc-shaped frame (7). A natural gas detector (11) is fixedly connected to the left side of the arc-shaped frame (7). A controller (12) is fixedly connected to the inner wall of the arc-shaped frame (7). An audible and visual alarm (13) is fixedly connected to the right side of the arc-shaped frame (7). An exhaust branch pipe (14) is fixedly connected to the surface of the detection tube (3). A solenoid valve (15) is fixedly connected to the surface of the exhaust branch pipe (14). A round rod (16) is rotatably connected to the inner wall of the detection tube (3). A strip baffle (17) is fixedly connected to the surface of the round rod (16). A first bevel gear (18) is fixedly connected to the surface of the round rod (16). A positioning frame (19) is fixedly connected to the surface of the detection tube (3). A drive motor (20) is fixedly connected to the inner wall of the positioning frame (19). A connecting rod (21) is fixedly connected to the output end of the drive motor (20). A second bevel gear (22) is fixedly connected to the end of the connecting rod (21) away from the drive motor (20).

2. The air foam-driven oil displacement gas concentration detection device with an alarm mechanism according to claim 1, characterized in that, The surface of the detection tube (3) has four threaded grooves that are compatible with the locking bolt (9).

3. The air foam-driven oil displacement gas concentration detection device with an alarm mechanism according to claim 1, characterized in that, The controller (12) is electrically connected to the natural gas detector (11), the audible and visual alarm (13), the solenoid valve (15), and the drive motor (20), respectively.

4. The air foam-driven oil displacement gas concentration detection device with an alarm mechanism according to claim 1, characterized in that, The width of the strip baffle (17) is smaller than the inner diameter of the detection tube (3).

5. The air foam-driven oil displacement gas concentration detection device with an alarm mechanism according to claim 1, characterized in that, The strip baffle (17) is located inside the detection tube (3) directly above the exhaust branch pipe (14).

6. The air foam-driven oil displacement gas concentration detection device with an alarm mechanism according to claim 1, characterized in that, The end of the connecting rod (21) away from the drive motor (20) extends into the interior of the detection tube (3), and the second bevel gear (22) meshes with the first bevel gear (18).

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