Composite detector

Abstract

The utility model relates to the field of detectors, in particular to a composite detector. The utility model provides a composite detector which comprises a detector body, a first air pump, an air inlet pipe and the like, the first air pump is arranged in the detector body, and the air inlet pipe is arranged on the right side of the first air pump. Through the arrangement of a detection assembly, a worker starts an electric push rod, the electric push rod pushes a flange connecting ring, a first mounting frame and a first expansion air cushion to move along the inner wall of an oil and gas pipeline, after the pipeline reaches a designated position, air enters the pipeline through a connecting pipe, and then a second air pump is started to suck air in the pipeline into the first expansion air cushion; the first air pump is started to expand and fit the inner wall of the pipeline, the second air pump is closed, then the third air pump is started to suck more air into the second expansion air cushion, the second expansion air cushion is completely expanded and seals the inner wall of the pipeline, the third air pump is closed, the interior of the oil and gas pipeline is conveniently blocked into a closed area, and the inner wall of the oil and gas pipeline is conveniently detected in a segmented mode.

Description

Technical Field

[0001] The utility model relates to the field of detectors, in particular to a composite detector. Background Art

[0002] A composite detector is an advanced detection device integrating multiple detection technologies, mainly used for simultaneously or sequentially detecting multiple targets in a complex environment. This kind of instrument is usually designed for multiple fields such as industrial safety, environmental protection, emergency response, military reconnaissance, aerospace, etc., to meet the multiple detection requirements in different scenarios.

[0003] When using a composite detector to detect an oil and gas pipeline, generally an integrity detection of the entire pipeline is carried out. When the reading of the composite detector shows a positive number, it usually indicates that the gas concentration inside or around the pipeline has abnormally increased, indicating that there may be a leak or break in the pipeline. If the reading of the detector shows a negative number, it indicates that the gas concentration in the detection area is within the normal range, and no obvious abnormality or damage is found in this part of the pipeline, and the pipeline can be considered intact. However, during the pipeline detection process, it is impossible to accurately locate the specific part of the pipeline where the problem occurs, which makes it impossible to quickly carry out the repair work, resulting in an extension of the pipeline outage time and affecting the continuity and stability of energy supply.

[0004] In view of the above problems, it is necessary to design a composite detector that can perform segmented detection. Summary of the Utility Model

[0005] In order to overcome the defect that it is impossible to accurately locate the specific part of the pipeline where the problem occurs, resulting in the inability to quickly carry out the repair work, the utility model provides a composite detector.

[0006] The technical solution of the utility model is: a composite detector, comprising a detector body, a first air pump, an air inlet pipe, an air outlet pipe, a connecting pipe and a detection component. The first air pump is installed inside the detector body, the air inlet pipe is arranged on the right side of the first air pump, the air outlet pipe is arranged at the rear of the first air pump, the air outlet pipe penetrates through the detector body, and a connecting pipe is threadedly connected to the air outlet pipe. The other end of the connecting pipe is provided with a detection component.

[0007] Preferably, the detection assembly includes a first mounting bracket, a second mounting bracket, a first expansion air cushion, a second expansion air cushion, a connector, an electric push rod, a second air pump, a third air pump, and a flange connection ring. One end of the connecting pipe away from the detector body is threadedly connected with a connector. One end of the connector away from the detector body is connected with a first mounting bracket. The connector penetrates through the first mounting bracket. A first expansion air cushion is sleeved in the middle of the first mounting bracket. An electric push rod is installed on the right side of the first mounting bracket. A second air pump is installed on the right side of the first mounting bracket. The second air pump is located behind the electric push rod. The right end of the electric push rod is connected with a second mounting bracket through a flange connection ring. A second expansion air cushion is sleeved in the middle of the second mounting bracket. A third air pump is installed on one side of the second mounting bracket close to the flange connection ring. The third air pump is located behind the flange connection ring. Air outlet valves are provided on both the second air pump and the third air pump.

[0008] Preferably, a dust filter screen is further included, and a dust filter screen is provided at the right end of the air inlet pipe.

[0009] Preferably, a fixing plate is further included. Two fixing plates are provided on the side of the detector body, and the two fixing plates are located on the right side and the rear side of the detector body.

[0010] Preferably, a protective cover is further included, and protective covers are provided on both fixing plates.

[0011] Preferably, both the first expansion air cushion and the second expansion air cushion are made of polyurethane material.

[0012] Preferably, a threaded groove is provided on the connector.

[0013] Preferably, the connecting pipe is a flexible pipe.

[0014] The beneficial effects of the present utility model: Through the setting of the detection assembly, the staff starts the electric push rod, and the electric push rod pushes the flange connection ring, the first mounting bracket, and the first expansion air cushion to move along the inner wall of the oil and gas pipeline. When it reaches the designated position, air enters the pipeline through the connecting pipe. Then, the second air pump is started to pump the air in the pipeline into the first expansion air cushion to make it expand and fit the inner wall of the pipeline. Then the second air pump is closed. Subsequently, the third air pump is started to pump more air into the second expansion air cushion to make it fully expand and seal the inner wall of the pipeline. Then the third air pump is closed. It is convenient to isolate the inside of the oil and gas pipeline into a closed area, which is convenient for segmental detection of the inner wall of the oil and gas pipeline, so as to more accurately locate the specific leakage point or damaged part in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the present utility model.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of components such as the detector body, the air outlet pipe, and the fixing plate of the present utility model.

[0017] Figure 3 This is a three-dimensional structural schematic diagram of components such as the electric push rod, second air pump, and flange connection ring of the present utility model.

[0018] Figure 4 This is a separated structural view of the first mounting bracket, first expansion air cushion, and second air pump of the present utility model.

[0019] Figure 5 This is a three-dimensional structural schematic diagram of the first air pump, dust filter net, and air outlet pipe of the present utility model.

[0020] Figure 6 This is a cross-sectional view of the first mounting bracket and the first expansion air cushion of the present utility model.

[0021] Reference numerals in the drawings: 1 - detector body, 2 - first air pump, 3 - intake pipe, 4 - dust filter net, 5 - air outlet pipe, 6 - fixing plate, 7 - protective cover, 8 - connecting pipe, 9 - first mounting bracket, 91 - second mounting bracket, 10 - first expansion air cushion, 101 - second expansion air cushion, 11 - connecting head, 12 - electric push rod, 13 - second air pump, 131 - third air pump, 14 - flange connection ring. Specific embodiments

[0022] The present utility model will be further described below in conjunction with the drawings and specific embodiments.

[0023] Embodiment: A composite detector, such as Figures 1-6As shown in the figure, it includes a detector body 1, a first air pump 2, an air inlet pipe 3, a dust filter net 4, an air outlet pipe 5, a fixing plate 6, a protective cover 7, a connecting pipe 8 and a detection component. Inside the detector body 1, a first air pump 2 is installed. The right side of the first air pump 2 is connected to an air inlet pipe 3. The right end of the air inlet pipe 3 is provided with a dust filter net 4, which can filter the air drawn into the air inlet pipe 3. The back side of the first air pump 2 is connected to an air outlet pipe 5. The air outlet pipe 5 penetrates the detector body 1. On the side of the detector body 1, there are two fixing plates 6. The two fixing plates 6 are located on the right side and the back side of the detector body 1. On both of the two fixing plates 6, there are protective covers 7. When the air inlet pipe 3 and the air outlet pipe 5 are not in use, the protective covers 7 seal the air inlet pipe 3 and the air outlet pipe 5. The air outlet pipe 5 is threadedly connected to a connecting pipe 8. The connecting pipe 8 is a flexible pipe. The other end of the connecting pipe 8 is provided with a detection component; The detection component includes a first mounting bracket 9, a second mounting bracket 91, a first expansion air cushion 10, a second expansion air cushion 101, a connecting head 11, an electric push rod 12, a second air pump 13, a third air pump 131 and a flange connection ring 14. One end of the connecting pipe 8 far from the detector body 1 is threadedly connected to a connecting head 11, which allows air to enter the first expansion air cushion 10 through the connecting head 11, causing the first expansion air cushion 10 to expand and fit against the inner wall of the oil and gas pipeline, facilitating the sealing of the oil and gas pipeline. One end of the connecting head 11 far from the detector body 1 is connected to a first mounting bracket 9. The connecting head 11 penetrates the first mounting bracket 9. The connecting head 11 is provided with a threaded groove. The middle of the first mounting bracket 9 is sleeved with a first expansion air cushion 10. The first expansion air cushion 10 is made of polyurethane material. On the right side of the first mounting bracket 9, an electric push rod 12 is installed. On the right side of the first mounting bracket 9, a second air pump 13 is installed. The second air pump 13 is located behind the electric push rod 12. An air outlet valve is provided on the second air pump 13. The right end of the electric push rod 12 is connected to a second mounting bracket 91 through a flange connection ring 14. The middle of the second mounting bracket 91 is sleeved with a second expansion air cushion 101. The second expansion air cushion 101 is also made of polyurethane material. When the second expansion air cushion 101 is in an expanded state, it can seal the inner wall of the oil and gas pipeline. On the side of the second mounting bracket 91 close to the flange connection ring 14, a third air pump 131 is installed. The third air pump 131 is located behind the flange connection ring 14. An air outlet valve is also provided on the third air pump 131.

[0024] When it is necessary to use this device for the integrity detection of oil and gas pipelines, the staff first place the detection component into the pipeline to be tested. After the detection component is placed, the staff open the two protective covers 7, then tighten the connecting pipe 8 on the air outlet pipe 5, and then tighten the other end of the connecting pipe 8 on the connector 11. Then, the staff start the first air pump 2 to draw external air into the air inlet pipe 3. The air is filtered by the dust filter net 4 and then enters the first air pump 2, and then enters the connecting pipe 8 through the air outlet pipe 5. At the same time, the staff start the electric push rod 12, and the telescopic end of the electric push rod 12 pushes the flange connection ring 14, the second mounting bracket 91 and the second expansion air cushion 101 to move along the inner wall of the oil and gas pipeline. When the second mounting bracket 91 and the second expansion air cushion 101 move a certain distance along the oil and gas pipeline, the electric push rod 12 is closed. The air enters the interior of the oil and gas pipeline through the connecting pipe 8, and then the second air pump 13 is started. The second air pump 13 pumps the air in the oil and gas pipeline into the first expansion air cushion 10 until the first expansion air cushion 10 expands to fit the inner wall of the oil and gas pipeline, and then the second air pump 13 is closed. At this time, the third air pump 131 is started again. The third air pump 131 pumps the air in the oil and gas pipeline into the second expansion air cushion 101 until the second expansion air cushion 101 is fully expanded and seals the inner wall of the pipeline, and then the third air pump 131 is closed. Since a closed area is formed between the first expansion air cushion 10 and the second expansion air cushion 101, air continuously flows in through the connector 11. When the pressure sensor in the detector detects a pressure change inside the pipeline, a simulation signal will be generated. Subsequently, the simulation signal is converted into a digital signal by the analog-to-digital converter for further processing and transmission. And the digital signal may be further processed to remove noise and perform data calibration, etc. The processed digital signal is sent to the display screen through the built-in wireless communication module of the detector. When the display screen shows a negative pressure value, it indicates that there is no leakage in this section of the pipeline. When the display screen shows a positive value, it means that there is a leakage in this section of the pipeline. The staff will record these data. Since the oil and gas pipeline is relatively long, if it is impossible to determine which specific part is damaged and leaking, the staff open the air outlet valve on the second air pump 13 to discharge the air in the first expansion air cushion 10 until the first expansion air cushion 10 returns to its initial state, and then close the air outlet valve on the second air pump 13. The electric push rod 12 is started again. When the telescopic end of the electric push rod 12 retracts, since the second expansion air cushion 101 seals the inner wall of the pipeline, the electric push rod 12 drives all the components on it to move along the pipeline. When the electric push rod 12 moves beside the second expansion air cushion 101, the second air pump 13 is started again. The second air pump 13 draws the air inside the pipeline into the first expansion air cushion 10 again, so that the first expansion air cushion 10 expands to fit the inner wall of the pipeline. Then, the air outlet valve on the third air pump 131 is opened to exhaust the second expansion air cushion 101 until the second expansion air cushion 101 returns to its initial state, and then the air outlet valve on the third air pump 131 is closed.The electric push rod 12 pushes the flange connection ring 14, the second mounting bracket 91 and the second expansion air cushion 101 to move along the inner wall of the oil and gas pipeline again. After the second mounting bracket 91 moves to a suitable position, the third air pump 131 is started. The third air pump 131 pumps the air in the oil and gas pipeline into the second expansion air cushion 101 until the second expansion air cushion 101 is fully expanded and closely fits the inner wall of the pipeline, then the third air pump 131 is turned off. At this time, a closed area is formed again between the first expansion air cushion 10 and the second expansion air cushion 101. The detector then detects this closed area. If the negative pressure value is displayed on the display screen, it indicates that there is no leakage in this closed area. Repeat the above operations until the detection of the entire oil and gas pipeline is completed, then turn off the first air pump 2 and the electric push rod 12, so as to perform segmented detection on the oil and gas pipeline, and accurately identify and locate the leakage points or damaged parts in the pipeline.,

[0025] The above are only examples of the present invention and are not intended to limit the present invention. All equivalent replacements made within the principle of the present invention shall be included in the protection scope of the present invention. The content not elaborated in detail in the present invention belongs to the prior art well-known to those skilled in the art.,

Claims

1. A composite detector, characterized in that, It includes a detector body (1), a first air pump (2), an intake pipe (3), an exhaust pipe (5), a connecting pipe (8) and a detection component. A first air pump (2) is installed inside the detector body (1). The right side of the first air pump (2) is connected to the intake pipe (3), and the rear side of the first air pump (2) is connected to the exhaust pipe (5). The exhaust pipe (5) penetrates the detector body (1). A connecting pipe (8) is threadedly connected to the exhaust pipe (5). The other end of the connecting pipe (8) is provided with a detection component.

2. The composite detector according to claim 1, wherein The detection component includes a first mounting bracket (9), a second mounting bracket (91), a first expansion air cushion (10), a second expansion air cushion (101), a connecting head (11), an electric push rod (12), a second air pump (13), a third air pump (131) and a flange connection ring (14). The end of the connecting pipe (8) far from the detector body (1) is threadedly connected to the connecting head (11). The end of the connecting head (11) far from the detector body (1) is connected to the first mounting bracket (9). The connecting head (11) penetrates the first mounting bracket (9). The first expansion air cushion (10) is sleeved in the middle of the first mounting bracket (9). The electric push rod (12) is installed on the right side of the first mounting bracket (9). The second air pump (13) is installed on the right side of the first mounting bracket (9). The second air pump (13) is located behind the electric push rod (12). The right end of the electric push rod (12) is connected to the second mounting bracket (91) through the flange connection ring (14). The second expansion air cushion (101) is sleeved in the middle of the second mounting bracket (91). The third air pump (131) is installed on the side of the second mounting bracket (91) close to the flange connection ring (14). The third air pump (131) is located behind the flange connection ring (14). Air outlet valves are provided on both the second air pump (13) and the third air pump (131).

3. The composite detector according to claim 2, wherein, It further includes a dust filter net (4), and the dust filter net (4) is provided at the right end of the intake pipe (3).

4. The composite detector according to claim 3, wherein, It further includes a fixing plate (6). Two fixing plates (6) are provided on the side of the detector body (1), and the two fixing plates (6) are located on the right side and the rear side of the detector body (1).

5. The composite detector according to claim 4, wherein It further includes a protective cover (7), and the protective covers (7) are provided on both fixing plates (6).

6. The composite detector according to claim 5, characterized in that, Both the first expansion air cushion (10) and the second expansion air cushion (101) are made of polyurethane material.

7. The composite detector according to claim 6, wherein The connecting head (11) is provided with a threaded groove.

8. A composite detector according to claim 7, wherein, The connecting pipe (8) is a flexible pipe.

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