A hazardous gas detection device and system for port oil and gas recovery pipelines

Abstract

This invention relates to the field of gas technology and discloses a hazardous gas detection device and system for port oil and gas recovery pipelines. The device includes a pipeline body with a connection port at its top. A detection housing is housed within the connection port's inner cavity, and a cover plate is positioned above the detection housing. The cover plate and the connection port are mutually compatible. Two symmetrical placement slots are formed on opposite side walls of the detection housing, each with a rectangular groove within its inner cavity. This invention allows the detection housing to be easily inserted into the pipeline body's inner cavity via the connection port. The ball bearings fit snugly against the pipeline's inner cavity. Combined with a moving rod and moving plate, the position of the detection component can be quickly adjusted to accommodate pipelines of different diameters. In the drive assembly, the active bevel gear meshes perpendicularly with the driven and following bevel gears, causing the left and right mounting plates to rotate synchronously. This, combined with the detection component, enables comprehensive detection of hazardous gases within the pipeline cavity, improving detection accuracy.

Description

Technical Field

[0001] This invention belongs to the field of gas technology, specifically, it relates to a hazardous gas detection device and system for port oil and gas recovery pipelines. Background Technology

[0002] As a key component of the oil and gas storage and transportation system, the accurate detection of harmful gases in the internal cavity of oil and gas recovery pipelines is directly related to port operation safety and environmental protection. With the expansion of port oil and gas transportation scale, pipeline specifications are becoming more diversified, and the pipe diameters of pipelines for different purposes and transportation scenarios vary significantly, which puts forward higher requirements for the adaptability of detection equipment.

[0003] However, existing detection coverage has blind spots. Traditional equipment transmission mechanisms mostly use a single-direction drive method, making it difficult for detection components to achieve all-round, no-dead-angle detection of harmful gases inside the pipeline cavity. This can easily lead to missed detections due to incomplete detection, affecting the accuracy of detection.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A hazardous gas detection device for a port oil and gas recovery pipeline includes a pipeline body with a connection port at its top. A detection housing is housed within the connection port's inner cavity, and a cover plate is positioned above the detection housing. The cover plate and the connection port are mutually compatible. Two placement slots are symmetrically arranged on opposite side walls of the detection housing. Each of the two placement slots has a rectangular slot within its inner cavity, which movably penetrates the detection housing. A ball bearing is also provided at the bottom of the detection housing. A circular... The detection housing has two circular slots that are symmetrical to each other. A left mounting plate and a right mounting plate are respectively provided on opposite side walls of the detection housing. The left and right mounting plates are symmetrical to each other and fit into the placement slots. A connecting plate is provided on each opposite side wall of the left and right mounting plates. The two connecting plates are symmetrical to each other, and a detection component is provided at the bottom of each connecting plate. A driving component is also provided inside the detection housing. The driving component is used to drive the left and right mounting plates to rotate and to drive the left and right mounting plates to move relative to each other in the horizontal direction.

[0006] In a preferred embodiment of the present invention, the driving assembly includes a rotary knob, which is rotatably mounted on the cover plate. A rotating rod is provided at the bottom of the rotary knob and moves through the detection housing. A rectangular mounting cylinder is provided at the bottom of the rotating rod.

[0007] In a preferred embodiment of the present invention, a sliding plate is slidably disposed within the inner cavity of the rectangular mounting cylinder, and a rectangular insertion rod is disposed at the bottom of the sliding plate. The rectangular insertion rod movably passes through the rectangular mounting cylinder, and a movable plate is disposed at the bottom of the rectangular insertion rod. The movable plate and the inner cavity of the detection housing fit together. A movable rod is disposed at the bottom of the movable plate, and the movable rod movably passes through the detection housing. A ball bearing is connected to the end of the movable rod away from the movable plate.

[0008] In a preferred embodiment of the present invention, a driving bevel gear is provided on the rectangular mounting cylinder, and a driven bevel gear and a follower bevel gear are respectively vertically meshed on the driving bevel gear. The driven bevel gear and the follower bevel gear are symmetrical to each other. A circular placement plate is provided at the opposite end of the driven bevel gear and the follower bevel gear. The two circular placement plates are symmetrical to each other. A semi-circular mounting cylinder is provided at the opposite end of the two circular placement plates. The two semi-circular mounting cylinders are symmetrical to each other. The two rectangular mounting blocks are respectively movably inserted through the circular slot.

[0009] In a preferred embodiment of the present invention, two circular placement plates are provided with circular grooves, the two circular grooves are symmetrical to each other, guide sliders are slidably arranged on each of the two circular grooves, the two guide sliders are symmetrical to each other, and fixing plates are provided on each of the two guide sliders, the two fixing plates are symmetrical to each other, and the two fixing plates are respectively arranged in the inner cavity of the detection housing.

[0010] In a preferred embodiment of the present invention, the bottom of each of the two semi-circular mounting cylinders is provided with a sliding groove, the two sliding grooves are symmetrical to each other, the two opposite side walls of the inner cavity of the two sliding grooves are provided with movable sliding grooves, each movable sliding groove is symmetrical to each other, and each movable sliding groove is slidably provided with a movable slider, each movable slider is symmetrical to each other.

[0011] In a preferred embodiment of the present invention, rectangular mounting blocks are fitted inside both semi-circular mounting cylinders. The two rectangular mounting blocks are symmetrical to each other and are connected to the movable slider. A slot is opened through both rectangular mounting blocks, and a multi-stage telescopic rod is provided in the cavity of the slot. One end of each multi-stage telescopic rod is respectively set on the driven bevel gear and the follower bevel gear, and the other end is respectively set on the left mounting plate and the right mounting plate.

[0012] In a preferred embodiment of the present invention, a circular mounting ring is provided on the outer side of the two rectangular mounting blocks. The two circular mounting rings are symmetrical to each other and are rotatably disposed with the inner cavities of the two semi-circular mounting cylinders respectively. A circular drive groove is provided on each of the two circular mounting rings. The two circular drive grooves are symmetrical to each other and a drive slider is slidably disposed on each of the two circular drive grooves.

[0013] In a preferred embodiment of the present invention, the two driving sliders are symmetrical to each other, and each of the two driving sliders has a swing arm at the bottom of its inner cavity. The two swing arms are symmetrical to each other, and the other ends of the two swing arms are respectively disposed on a moving plate.

[0014] A hazardous gas detection system for port oil and gas recovery pipelines, comprising the following steps: Step 1: Insert the test housing into the inner cavity of the pipe through the connection port of the pipe body, so that the ball bearing fits into the inner cavity of the pipe body, and lower the test housing to the designated position to complete the initial placement of the equipment; Step 2: Seal both ends of the pipeline to create a closed testing environment and prevent the leakage of harmful gases from affecting the test results; Step 3: The ball bearings are driven by force to move the moving rod upward. Through the linkage of the moving plate with the swing arm, circular mounting ring and other components, the left and right mounting plates are adjusted to make the detection component aligned with the detection area. Step 4: The staff turns the rotary knob on the cover plate, which drives the detection component to rotate at multiple angles through the rotating rod, active bevel gear and other drive components, so as to conduct a comprehensive detection of harmful gases in the pipeline; Step 5: After the test is completed, rotate the knob in the opposite direction to reset the component, release the seal of the pipeline body, remove the test housing, tidy up the equipment and record the test data.

[0015] Compared with the prior art, the present invention has the following advantages: This invention allows the detection housing to be easily inserted into the inner cavity of the pipeline body through the connection port. The ball bearings fit snugly against the pipeline cavity, and the position of the detection component can be quickly adjusted using structures such as the moving rod and moving plate, adapting to pipelines of different diameters. In the drive component, the active bevel gear meshes perpendicularly with the driven bevel gear and the follower bevel gear, driving the left and right mounting plates to rotate synchronously. Combined with the detection component, this enables comprehensive detection of harmful gases inside the pipeline cavity, improving detection accuracy. The sliding cooperation between the moving slider and the moving groove, the driving slider and the circular driving groove, and the extension and retraction adaptation of the multi-stage telescopic rod ensure smooth and coordinated movement of all components, guaranteeing orderly and efficient detection, and significantly improving the practicality and reliability of port oil and gas recovery pipeline detection.

[0016] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram: Figure 1 A three-dimensional structural diagram of a hazardous gas detection device for port oil and gas recovery pipelines; Figure 2 A schematic cross-sectional view of the pipeline body of a hazardous gas detection device for a port oil and gas recovery pipeline. Figure 3 A schematic cross-sectional view of the detection housing structure of a hazardous gas detection device for a port oil and gas recovery pipeline. Figure 4 A hazardous gas detection device for port oil and gas recovery pipelines Figure 3 Enlarged schematic diagram of the detection housing structure; Figure 5 A schematic diagram of a partial structure of the inner cavity of the detection housing of a hazardous gas detection device for a port oil and gas recovery pipeline. Figure 6 A schematic diagram of the exploded internal structure of the detection housing of a hazardous gas detection device for a port oil and gas recovery pipeline. Figure 7 A hazardous gas detection device for port oil and gas recovery pipelines Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 A schematic diagram of the bottom view of a semi-circular mounting cylinder for a hazardous gas detection device in a port oil and gas recovery pipeline. Figure 9 A magnified schematic diagram of the semi-circular mounting cylinder structure of a hazardous gas detection device for a port oil and gas recovery pipeline. Figure 10 A schematic diagram of the right mounting plate of a hazardous gas detection device for a port oil and gas recovery pipeline. Figure 11 A hazardous gas detection device for port oil and gas recovery pipelines Figure 10 Enlarged structural diagram at point B.

[0018] In the picture: 1. Pipe body; 11. Connection port; 2. Inspection housing; 21. Cover plate; 22. Rotary knob; 221. Rotating rod; 222. Rectangular mounting cylinder; 223. Rectangular insertion rod; 224. Sliding plate; 23. Moving plate; 231. Moving rod; 232. Ball bearing; 24. Circular groove; 241. Placement groove; 242. Rectangular groove; 3. Driving bevel gear; 31. Driven bevel gear; 311. Follower bevel gear; 32. Semi-circular mounting cylinder; 321. Sliding groove; 322. Moving slide; 323. Circular slide; 324. Guide slider; 325. Fixing plate; 326. Circular placement plate; 327. Moving slider; 33. Rectangular mounting block; 331. Circular mounting ring; 332. Circular drive slide; 333. Drive slider; 334. Swing arm; 34. Multi-stage telescopic rod; 35. Right mounting plate; 351. Connecting plate; 352. Detection assembly; 36. Left mounting plate. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0020] Example 1: like Figures 1 to 11As shown, a hazardous gas detection device for a port oil and gas recovery pipeline includes a pipeline body 1. A connection port 11 is provided on the top of the pipeline body 1. A detection housing 2 is housed inside the connection port 11. A cover plate 21 is provided on the top of the detection housing 2, and the cover plate 21 and the connection port 11 are mutually compatible. Placement slots 241 are provided on opposite side walls of the detection housing 2, and the two placement slots 241 are symmetrical. Rectangular slots 242 are provided inside the two placement slots 241, and the two rectangular slots 242 movably penetrate the detection housing 2. A ball bearing 232 is also provided at the bottom of the detection housing 2. Circular... The detection housing 2 has two circular slots 24, which are symmetrical to each other. The two opposite side walls of the detection housing 2 are respectively provided with a left mounting plate 36 and a right mounting plate 35. The left mounting plate 36 and the right mounting plate 35 are symmetrical to each other and fit into the slots 241. The opposite side wall of the left mounting plate 36 and the right mounting plate 35 is provided with a connecting plate 351. The two connecting plates 351 are symmetrical to each other and a detection component 352 is provided at the bottom of the two connecting plates 351. The inner cavity of the detection housing 2 is also provided with a driving component. The driving component is used to drive the left mounting plate 36 and the right mounting plate 35 to rotate and to drive the left mounting plate 36 and the right mounting plate 35 to move relative to each other in the horizontal direction. The detection housing 2 can be easily inserted into the inner cavity of the pipe body 1 through the connection port 11. The ball bearing 232 fits snugly against the inner cavity of the pipe. With the help of the moving rod 231, moving plate 23 and other structures, the position adjustment of the detection component 352 can be quickly completed to adapt to pipes of different diameters. In the drive component, the active bevel gear 3 meshes perpendicularly with the driven bevel gear 31 and the follower bevel gear 311, driving the left mounting plate 36 and the right mounting plate 35 to rotate synchronously. Together with the detection component 352, it can achieve comprehensive detection of harmful gases in the inner cavity of the pipe, improving the detection accuracy. The sliding cooperation between the moving slider 327 and the moving slide 322, the driving slider 333 and the circular driving slide 332, and the extension and retraction adaptation of the multi-stage telescopic rod 34 ensure that the movement of each component is smooth and coordinated, ensuring orderly and efficient detection, and greatly improving the practicality and reliability of port oil and gas recovery pipeline detection.

[0021] like Figures 1 to 6 As shown, in a specific embodiment, the drive assembly includes a rotary knob 22, which is rotatably mounted on the cover plate 21. A rotating rod 221 is located at the bottom of the rotary knob 22, and the rotating rod 221 extends movably through the detection housing 2. A rectangular mounting cylinder 222 is located at the bottom of the rotating rod 221. This configuration defines the installation position and components of the drive assembly.

[0022] like Figures 4 to 6As shown, further, a sliding plate 224 is slidably disposed within the inner cavity of the rectangular mounting cylinder 222. A rectangular insertion rod 223 is disposed at the bottom of the sliding plate 224, and the rectangular insertion rod 223 movably passes through the rectangular mounting cylinder 222. A movable plate 23 is disposed at the bottom of the rectangular insertion rod 223, and the movable plate 23 fits into the inner cavity of the detection housing 2. A movable rod 231 is disposed at the bottom of the movable plate 23, and the movable rod 231 movably passes through the detection housing 2. A ball bearing 232 is connected to the end of the movable rod 231 away from the movable plate 23. In this configuration, the positions of the movable rod 231 and the movable plate 23 are determined.

[0023] like Figures 3 to 8 and Figure 10 As shown, further, a driving bevel gear 3 is provided on the rectangular mounting cylinder 222. A driven bevel gear 31 and a follower bevel gear 311 are respectively vertically meshed on the driving bevel gear 3. The driven bevel gear 31 and the follower bevel gear 311 are symmetrical to each other. A circular placement plate 326 is provided at the opposite end of each driven bevel gear 31 and the follower bevel gear 311. The two circular placement plates 326 are symmetrical to each other. A semi-circular mounting cylinder 32 is provided at the opposite end of each of the two circular placement plates 326. The two semi-circular mounting cylinders 32 are symmetrical to each other. Two rectangular mounting blocks 34 are movably inserted through the circular slot 24. In this configuration, the installation position of the semi-circular mounting cylinder 32 is determined.

[0024] Example 2: The difference between the above embodiments and this embodiment is that: Figures 3 to 9 As shown, a hazardous gas detection device for a port oil and gas recovery pipeline includes two circular placement plates 326 with circular grooves 323 symmetrically arranged. Guide sliders 324 are slidably mounted on each of the two circular grooves 323, and are also symmetrically arranged. Fixing plates 325 are symmetrically arranged on each of the two guide sliders 324, and are respectively disposed within the inner cavity of the detection housing 2. The installation positions of the fixing plates 325 are determined in this configuration.

[0025] like Figures 3 to 9 As shown, in a specific embodiment, each of the two semi-circular mounting cylinders 32 has a sliding groove 321 at its bottom. The two sliding grooves 321 are symmetrical to each other. Each pair of opposite side walls of the inner cavity of the two sliding grooves 321 has a movable sliding groove 322. Each movable sliding groove 322 is symmetrical to each other. A movable slider 327 is slidably mounted inside the inner cavity of each movable sliding groove 322. Each movable slider 327 is symmetrical to each other. In this configuration, the installation position of the movable slider 327 is determined.

[0026] like Figures 3 to 11As shown, furthermore, rectangular mounting blocks 33 are fitted into both semi-circular mounting cylinders 32, and the two rectangular mounting blocks 33 are symmetrical to each other. Each rectangular mounting block 33 is connected to a movable slider 327. Each rectangular mounting block 33 has a through-hole, and the inner cavity of the slot is equipped with multi-stage telescopic rods 34. One end of each multi-stage telescopic rod 34 is respectively mounted on the driven bevel gear 31 and the following bevel gear 311, and the other end is respectively mounted on the left mounting plate 36 and the right mounting plate 35. In this configuration, the mounting positions of the left mounting plate 36 and the right mounting plate 35 are determined.

[0027] like Figures 3 to 11 As shown, furthermore, two circular mounting rings 331 are provided on the outer sides of the two rectangular mounting blocks 33. The two circular mounting rings 331 are symmetrical to each other and are rotatably configured with the inner cavities of the two semi-circular mounting cylinders 32, respectively. Each of the two circular mounting rings 331 has a circular drive groove 332, which is symmetrical to each other. A drive slider 333 is slidably configured on each of the two circular drive grooves 332. In this configuration, the installation position and components of the circular mounting rings 331 are determined.

[0028] like Figures 3 to 11 As shown, furthermore, the two drive sliders 333 are symmetrical to each other, and each drive slider 333 has a swing arm 334 at the bottom of its inner cavity. The two swing arms 334 are symmetrical to each other, and the other ends of the two swing arms 334 are respectively mounted on the moving plate 23. In this configuration, the installation position of the swing arms 334 is determined.

[0029] Example 3: This invention also discloses a hazardous gas detection system for port oil and gas recovery pipelines, the steps of which are as follows: Step 1: Insert the detection housing 2 into the inner cavity of the pipe through the connection port 11 of the pipe body 1, so that the ball bearing 232 fits into the inner cavity of the pipe body 1, and lower the detection housing 2 to the designated position to complete the initial placement of the equipment; Step 2: Seal both ends of the pipe body 1 to create a closed testing environment and prevent the leakage of harmful gases from affecting the test results; Step 3: The ball bearing 232 is driven by the force to move the moving rod 231 upward. Through the moving plate 23, the swing arm 334, the circular mounting ring 331 and other components are linked to drive the left mounting plate 36 and the right mounting plate 35 to adjust their positions so that the detection component 352 is aligned with the detection area. Step 4: The staff rotates the rotary knob 22 on the cover plate 21, which drives the detection component 352 to rotate at multiple angles through the rotating rod 221, the active bevel gear 3 and other driving components, so as to conduct a comprehensive detection of harmful gases in the pipeline. Step 5: After the test is completed, rotate the rotary knob 22 in the opposite direction to reset the component, release the seal of the pipeline body 1, take out the test housing 2, tidy up the equipment and record the test data.

[0030] The implementation principle of a hazardous gas detection device for port oil and gas recovery pipelines in this embodiment is as follows: When the detection housing 2 is inserted into the inner cavity of the pipe body 1 through the connection port 11, the ball bearing 232 will move downward and fit into the inner cavity of the pipe body 1. As the detection housing 2 continues to be lowered, the ball bearing 232 remains stationary, and the moving rod 231 moves upward, driving the moving plate 23 to move upward. The moving plate 23 pushes the rectangular plug rod 223 to slide into the rectangular mounting cylinder 222 on one hand, and drives the driving slider 333 to slide in the circular driving groove 332 of the circular mounting ring 331 through the swing arm 334, thereby driving the circular mounting ring 331 to move. The circular mounting ring 331 drives the rectangular mounting block 33 to move synchronously. The rectangular mounting block 33 slides in the moving groove 322 of the semi-circular mounting cylinder 32 through the moving slider 327. At the same time, the multi-stage telescopic rod 34 extends and retracts in coordination, ultimately driving the left mounting plate 36 and the right mounting plate 35 to move, realizing the position adjustment of the detection component 352. After the housing 2 is placed in place, both ends of the pipe body 1 are sealed. The operator rotates the rotary knob 22 on the cover plate 21. The rotary knob 22 drives the rotating rod 221 to rotate. The rotating rod 221 drives the rectangular mounting cylinder 222 and the rectangular plug rod 223 to rotate synchronously (the rectangular plug rod 223 is rotatably connected to the moving plate 23). When the rectangular mounting cylinder 222 rotates, it drives the driving bevel gear 3 to rotate. The driving bevel gear 3 meshes perpendicularly with the driven bevel gear 31 and the follower bevel gear 311, thereby driving them to rotate in opposite directions. The driven bevel gear 31 and the follower bevel gear 311 respectively... The corresponding circular placement plate 326 is rotated. The circular placement plate 326 slides in the circular groove 323 through the guide slider 324 to ensure rotational stability. At the same time, the circular placement plate 326 drives the semi-circular mounting cylinder 32 to rotate. The semi-circular mounting cylinder 32 drives the rectangular mounting block 33 to rotate through the moving slider 327. The rectangular mounting block 33 drives the left mounting plate 36 and the right mounting plate 35 to rotate synchronously through the multi-stage telescopic rod 34, so that the detection components 352 on the left mounting plate 36 and the right mounting plate 35 can perform comprehensive and accurate detection of harmful gases in the inner cavity of the pipeline body 1. Throughout the process, the circular mounting ring 331 rotates and engages with the inner cavity of the semi-circular mounting cylinder 32, the rectangular mounting block 33 fits into the inner cavity of the semi-circular mounting cylinder 32, and the sliding engagement of the movable slide groove 322 with the movable slider 327 and the circular drive slide groove 332 with the drive slider 333 ensures the smoothness and coordination of the movement of each component, and realizes the orderly adjustment of the position of the detection component 352 and the multi-angle detection.

Claims

1. A hazardous gas detection device for port oil and gas recovery pipelines, comprising a pipeline body (1), characterized in that: A connection port (11) is provided on the top of the pipe body (1), a detection housing (2) is provided inside the connection port (11), a cover plate (21) is provided on the top of the detection housing (2), and the cover plate (21) and the connection port (11) are compatible with each other; The detection housing (2) has placement slots (241) on both opposite side walls. The inner cavities of the two placement slots (241) are provided with rectangular slots (242). The two rectangular slots (242) are respectively movably inserted through the detection housing (2). The bottom of the detection housing (2) is also provided with ball bearings (232). Circular slots (24) are provided through the two rectangular slots (242) and the placement slots (241). The detection housing (2) is provided with a left mounting plate (36) and a right mounting plate (35) on opposite side walls. The left mounting plate (36) and the right mounting plate (35) are symmetrical to each other. The left mounting plate (36) and the right mounting plate (35) fit into the placement slot (241) respectively. A connecting plate (351) is provided on opposite side walls of the left mounting plate (36) and the right mounting plate (35). The two connecting plates (351) are symmetrical to each other. A detection component (352) is provided at the bottom of the two connecting plates (351). The inner cavity of the detection housing (2) is also provided with a driving assembly, which is used to drive the left mounting plate (36) and the right mounting plate (35) to rotate, and the driving assembly is also used to drive the left mounting plate (36) and the right mounting plate (35) to move relative to each other in the horizontal direction.

2. The hazardous gas detection equipment for port oil and gas recovery pipelines according to claim 1, characterized in that, The drive assembly includes a rotary knob (22), which is rotatably mounted on the cover plate (21). A rotating rod (221) is provided at the bottom of the rotary knob (22), which moves through the detection housing (2). A rectangular mounting cylinder (222) is provided at the bottom of the rotating rod (221).

3. The hazardous gas detection equipment for port oil and gas recovery pipelines according to claim 2, characterized in that, A sliding plate (224) is slidably disposed in the inner cavity of the rectangular mounting cylinder (222). A rectangular plug rod (223) is disposed at the bottom of the sliding plate (224). The rectangular plug rod (223) movably passes through the rectangular mounting cylinder (222). A movable plate (23) is disposed at the bottom of the rectangular plug rod (223). The movable plate (23) and the inner cavity of the detection housing (2) fit together. A movable rod (231) is disposed at the bottom of the movable plate (23). The movable rod (231) movably passes through the detection housing (2). A ball bearing (232) is connected to the end of the movable rod (231) away from the movable plate (23).

4. The hazardous gas detection equipment for port oil and gas recovery pipelines according to claim 2, characterized in that, The rectangular mounting cylinder (222) is provided with a driving bevel gear (3), and the driving bevel gear (31) and the following bevel gear (311) are respectively vertically meshed on the driving bevel gear (3). The driven bevel gear (31) and the following bevel gear (311) are symmetrical to each other. A circular placement plate (326) is provided at the opposite end of the driven bevel gear (31) and the following bevel gear (311). The two circular placement plates (326) are symmetrical to each other. A semi-circular mounting cylinder (32) is provided at the opposite end of the two circular placement plates (326). The two semi-circular mounting cylinders (32) are symmetrical to each other. The two rectangular mounting blocks (34) are respectively movably inserted through the circular slot (24).

5. The hazardous gas detection equipment for port oil and gas recovery pipelines according to claim 4, characterized in that, Two circular placement plates (326) are provided with circular grooves (323), the two circular grooves (323) are symmetrical to each other, and guide sliders (324) are slidably arranged on both circular grooves (323), the two guide sliders (324) are symmetrical to each other, and fixing plates (325) are provided on both guide sliders (324), the two fixing plates (325) are symmetrical to each other, and the two fixing plates (325) are respectively arranged in the inner cavity of the detection housing (2).

6. The hazardous gas detection equipment for port oil and gas recovery pipelines according to claim 4, characterized in that, The bottom of each of the two semi-circular mounting cylinders (32) is provided with a sliding groove (321), the two sliding grooves (321) are symmetrical to each other, and the two opposite side walls of the inner cavity of each of the two sliding grooves (321) are provided with a movable sliding groove (322), each movable sliding groove (322) is symmetrical to each other, and each movable sliding groove (322) is slidably provided with a movable slider (327), each movable slider (327) is symmetrical to each other.

7. The hazardous gas detection equipment for port oil and gas recovery pipelines according to claim 4, characterized in that, Rectangular mounting blocks (33) are fitted inside both semi-circular mounting cylinders (32). The two rectangular mounting blocks (33) are symmetrical to each other. The two rectangular mounting blocks (33) are connected to the movable slider (327) respectively. A slot is opened through both rectangular mounting blocks (33), and a multi-stage telescopic rod (34) is provided in the inner cavity of the slot. One end of the two multi-stage telescopic rods (34) is respectively set on the driven bevel gear (31) and the follower bevel gear (311), and the other end is respectively set on the left mounting plate (36) and the right mounting plate (35).

8. The hazardous gas detection equipment for port oil and gas recovery pipelines according to claim 7, characterized in that, The two rectangular mounting blocks (33) are also provided with circular mounting rings (331) on their outer sides. The two circular mounting rings (331) are symmetrical to each other. The two circular mounting rings (331) are rotatably disposed with the inner cavities of the two semi-circular mounting cylinders (32) respectively. The two circular mounting rings (331) are provided with circular drive grooves (332). The two circular drive grooves (332) are symmetrical to each other. The two circular drive grooves (332) are slidably disposed with drive sliders (333).

9. A hazardous gas detection device for port oil and gas recovery pipelines according to claim 8, characterized in that, The two drive sliders (333) are symmetrical to each other, and each of the two drive sliders (333) has a swing arm (334) at the bottom of its inner cavity. The two swing arms (334) are symmetrical to each other, and the other ends of the two swing arms (334) are respectively set on the moving plate (23).

10. A hazardous gas detection system for port oil and gas recovery pipelines, characterized in that, The hazardous gas detection equipment for port oil and gas recovery pipelines according to any one of claims 1 to 9, wherein the hazardous gas detection system for port oil and gas recovery pipelines comprises the following steps: Step 1: Insert the detection housing (2) into the inner cavity of the pipe through the connection port (11) of the pipe body (1), so that the ball (232) fits into the inner cavity of the pipe body (1), and lower the detection housing (2) to the designated position to complete the initial placement of the equipment; Step 2: Seal both ends of the pipe body (1) to create a closed testing environment and prevent harmful gas leakage from affecting the test results; Step 3: The ball bearing (232) is driven by the force to move the moving rod (231) upward. Through the linkage of the moving plate (23) with the swing arm (334), the circular mounting ring (331) and other components, the left mounting plate (36) and the right mounting plate (35) are driven to adjust their positions so that the detection component (352) is aligned with the detection area. Step 4: The staff rotates the rotary knob (22) on the cover plate (21), and through the rotating rod (221), the active bevel gear (3) and other driving components, drives the detection component (352) to rotate at multiple angles to conduct a comprehensive detection of harmful gases in the pipeline; Step 5: After the test is completed, rotate the rotary knob (22) in the opposite direction to reset the component, release the seal of the pipeline body (1), take out the test housing (2), tidy up the equipment and record the test data.

Images