A wharf pipe trench gas detection device
By designing a gas detection device inside the dock trench, and utilizing a winding assembly and a water level sensor to protect the gas detector and ensure accurate data collection, the problem of water accumulation in the trench damaging the detector and compromising detection accuracy was solved, achieving high-precision gas analysis.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI JIAOKE TESTING RES INST CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-21
AI Technical Summary
Gas detectors in the trenches of the dock are easily damaged by water accumulation, and their detection accuracy is affected. Existing technology makes it difficult to achieve high-precision detection under conditions unaffected by water.
Design a gas detection device for a wharf trench, including a gas detector and a gas collection component. Using a winding component and a water level sensor, the gas detector is installed far away from the water source through a gas collection pipe. The gas collection pipe can be lowered above the water surface. Combined with a gas collection pump and a gas delivery pipe, accurate gas collection and analysis can be achieved.
It protects the gas detector from water damage, improves detection accuracy, and ensures the accuracy and reliability of gas detection in the trench.
Smart Images
Figure CN224535943U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gas detection technology, specifically a gas detection device for wharf trenches. Background Technology
[0002] As the core area for cargo loading, unloading, storage, and transportation, the underground or surface trenches (such as cable trenches, pipe trenches, and drainage ditches) of the dock are prone to becoming high-risk areas for gas accumulation due to their enclosed or semi-enclosed characteristics. These gases may originate from pipeline leaks (oil and gas, chemicals), organic matter decay, or operational volatilization. If not detected and treated in a timely manner, they may cause safety accidents such as explosions, poisoning, and suffocation. Therefore, it is necessary to regularly analyze and detect the gases in the trenches.
[0003] However, the dock's pipe trenches are close to the coastline, and water can easily accumulate inside them. If the gas detector is installed inside the trench, water accumulation could easily damage it. On the other hand, if the gas detector is installed above the trench in a completely safe location, the gas it collects will be gas that has risen from the trench. This gas will be diluted as it disperses into the air, thus affecting the accuracy of the gas analysis and detection.
[0004] To address the aforementioned issues, we propose a gas detection device for wharf trenches. Utility Model Content
[0005] To address the problems in the background art, this utility model provides a gas detection device for wharf trenches.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A gas detection device for a wharf trench includes a gas detector and a gas collection component. The gas collection component includes a gas collection box, and a gas collection pump is installed on the left side of the inner cavity of the gas collection box. The output end of the gas collection pump is connected to the gas detector through a gas delivery pipe. A gas extraction pipe is installed in the gas extraction port of the gas collection pump, and a gas collection pipe is connected to the end of the gas extraction pipe through a rotary joint. A winding assembly is installed in the middle of the inner side of the gas sampling box. The winding assembly includes a support frame, and a winding wheel is movably installed in the middle of the inner side of the support frame. The winding wheel is driven by a motor and is used to wind the gas sampling pipe. A steel wire rope is wound on the winding wheel, and the gas sampling pipe is attached to the steel wire rope. A load-bearing block is installed at the bottom of the steel wire rope, and a water level sensor is installed at the bottom of the load-bearing block.
[0007] Preferably, the bottom of the winding reel is provided with a guide assembly, the guide assembly including a reciprocating screw, the reciprocating screw is movably installed on the lower inner side of the support frame, a sliding block is slidably installed on the reciprocating screw, and a through hole is provided in the middle of the right end of the sliding block, through which the gas sampling pipe and the steel wire rope pass.
[0008] Preferably, a first pulley is installed at the middle of the right end of the take-up reel, and a second pulley is installed at the middle of the right end of the reciprocating lead screw. The first pulley and the second pulley are connected by a synchronous belt.
[0009] Preferably, a guide rod is provided at the bottom of the reciprocating lead screw, the guide rod is located at the bottom of the reciprocating lead screw, and the guide rod is slidably connected to the sliding block.
[0010] Preferably, a limiting ring is provided at the bottom center of the gas sampling box, and the gas sampling pipe and the steel wire rope pass through the limiting ring.
[0011] Preferably, the gas sampling pipe and the steel wire rope are fixedly connected by multiple sets of fixing rings.
[0012] Compared with the prior art, the beneficial effects of this utility model are: In this solution, the gas detector is protected and its service life is extended by installing it in a location far from the water source. At the same time, the gas collection pipe is wound or unwound using a winding assembly, allowing the inlet end of the gas collection pipe to be lowered to the bottom of the trench, close to the water surface. This enables the gas detector to directly collect and detect the gas at the bottom of the trench near the water surface, thereby effectively improving the accuracy of gas detection in the trench. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the winding assembly in this utility model; Figure 3 This utility model Figure 2 Enlarged view of point A in the middle; Figure 4 This is a side sectional view of the sliding block in this utility model.
[0014] In the diagram: 1. Gas detector; 2. Gas delivery pipe; 3. Gas sampling box; 4. Gas sampling pump; 5. Gas extraction pipe; 6. Gas sampling pipe; 7. Winding reel; 8. Support frame; 9. Motor; 10. Rotary joint; 11. First pulley; 12. Second pulley; 13. Synchronous belt; 14. Reciprocating screw; 15. Guide rod; 16. Sliding block; 17. Steel wire rope; 18. Fixing ring; 19. Load-bearing block; 20. Water level sensor; 21. Limiting ring; 22. Through hole. Detailed Implementation
[0015] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows: Example: Refer to Figure 1 - Figure 4 As shown, this embodiment of a wharf trench gas detection device includes a gas detector 1, a gas collection component, and a gas collection box 3. A collection pump 4 is installed on the left side of the inner cavity of the collection box 3. The output end of the collection pump 4 is connected to the gas detector 1 through a gas supply pipe 2. An extraction pipe 5 is installed in the extraction port of the collection pump 4. The end of the extraction pipe 5 is connected to a collection pipe 6 through a rotary joint 10. A winding component is installed in the middle of the inner side of the collection box 3. The winding component includes a support frame 8. A winding wheel 7 is movably installed in the middle of the inner side of the support frame 8. The winding wheel 7 is driven by a motor 9 and is used to wind the collection pipe 6. A steel wire rope 17 is wound on the winding wheel 7. The collection pipe 6 is attached to the steel wire rope 17. A load-bearing block 19 is installed at the bottom of the steel wire rope 17. A water level sensor 20 is installed at the bottom of the load-bearing block 19.
[0016] When the gas sampling pipe 6 is lowered, the load-bearing block 19 will drive the gas sampling pipe 6 to descend steadily. Then, the water level sensor 20 will detect the level in the trench in real time, so that the air inlet of the gas sampling pipe 6 can be lowered to a position above the water surface in the trench. This allows the gas sampling pump 4 to directly extract the gas near the water surface and send it to the gas detector 1 for analysis and detection, thereby effectively improving the accuracy of gas detection in the trench.
[0017] In some examples, a guide assembly is provided at the bottom of the winding wheel 7. The guide assembly includes a reciprocating screw 14, which is movably mounted on the lower inner side of the support frame 8. A sliding block 16 is slidably mounted on the reciprocating screw 14. A through hole 22 is provided at the middle of the right end of the sliding block 16. The gas sampling pipe 6 and the steel wire rope 17 pass through the through hole 22. A first pulley 11 is installed at the middle of the right end of the winding wheel 7, and a second pulley 12 is installed at the middle of the right end of the reciprocating screw 14. The first pulley 11 and the second pulley 12 are connected by a synchronous belt 13. A guide rod 15 is provided at the bottom of the reciprocating screw 14. The guide rod 15 is located at the bottom of the reciprocating screw 14 and is slidably connected to the sliding block 16.
[0018] When the motor 9 drives the winding wheel 7 to wind the wire rope 17 and the gas extraction pipe 6, the first pulley 11, the second pulley 12 and the synchronous belt 13 simultaneously drive the reciprocating screw 14 to rotate, thereby driving the sliding block 16 to slide horizontally back and forth. This arranges the winding of the wire rope 17 and the gas extraction pipe 6, preventing them from getting stuck in a clump, which would affect the smoothness of the winding or unwinding process.
[0019] In some examples, a limiting ring 21 is provided at the bottom center of the gas sampling box 3. The gas sampling pipe 6 and the steel wire rope 17 pass through the limiting ring 21. The limiting ring 21 plays a limiting role, improving the stability of the steel wire rope 17 and the gas sampling pipe 6 during the winding and unwinding process.
[0020] In some examples, the gas sampling pipe 6 and the steel wire rope 17 are fixedly connected by multiple sets of fixing rings 18, so that the gas sampling pipe 6 can be tied to the steel wire rope 17. Then, the load-bearing block 19 is hoisted by the steel wire rope 17, so that the pressure applied by the load-bearing block 19 acts on the steel wire rope 17, thereby effectively avoiding damage to the gas sampling pipe 6, maintaining the integrity of the gas sampling pipe 6, and allowing the collected gas to be smoothly delivered to the gas detector 1 for analysis and detection.
[0021] The working principle of this utility model is as follows: When in use, the gas sampling box 3 needs to be installed above the trench. When it is necessary to detect the gas in the trench, the motor 9 is started to drive the winding wheel 7 to release the line. During the release, the load-bearing block 19 will drive the steel wire rope 17 and the gas sampling pipe 6 to descend. During the descent, the water level sensor 20 located at the bottom of the load-bearing block 19 will detect the distance between the load-bearing block 19 and the water surface in the trench in real time, so as to prevent the load-bearing block 19 from falling into the water. When the inlet end of the gas sampling pipe 6 is close to the water surface, the motor 9 stops rotating, so that the load-bearing block 19 is suspended above the water surface. At this time, the inlet end of the gas sampling pipe 6 is not in contact with the water surface and is in a free-flowing state.
[0022] Then the gas pump 4 can be started to extract the gas near the water surface through the gas extraction pipe 5 and the gas collection pipe 6, and then transport it to the gas detector 1 through the gas delivery pipe 2 for analysis and detection.
[0023] This invention uses a winding assembly to wind or unwind the gas sampling pipe 6, allowing the inlet end of the pipe 6 to be lowered to a position close to the water surface. This enables the gas detector 1 to directly collect and detect the gas at the bottom of the trench, near the water surface, thereby effectively improving the accuracy of gas detection in the trench.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A gas detection device for a wharf trench, comprising a gas detector (1), characterized in that: A gas collection assembly includes a gas collection box (3), a gas collection pump (4) is installed on the left side of the inner cavity of the gas collection box (3), the output end of the gas collection pump (4) is connected to the gas detector (1) through a gas delivery pipe (2), a gas extraction pipe (5) is installed in the gas extraction port of the gas collection pump (4), and a gas collection pipe (6) is connected to the end of the gas extraction pipe (5) through a rotary joint (10). The winding assembly is installed in the middle of the inner side of the gas sampling box (3). The winding assembly includes a support frame (8). A winding wheel (7) is movably installed in the middle of the inner side of the support frame (8). The winding wheel (7) is driven by a motor (9). The winding wheel (7) is used to wind the gas sampling pipe (6) around. A steel wire rope (17) is wound on the winding wheel (7). The gas sampling pipe (6) is attached to the steel wire rope (17). A load-bearing block (19) is installed at the bottom of the steel wire rope (17). A water level sensor (20) is installed at the bottom of the load-bearing block (19).
2. The gas detection device for a wharf trench according to claim 1, characterized in that, The bottom of the winding reel (7) is provided with a guide assembly, which includes a reciprocating screw (14). The reciprocating screw (14) is movably installed on the lower inner side of the support frame (8). A sliding block (16) is slidably installed on the reciprocating screw (14). A through hole (22) is provided in the middle of the right end of the sliding block (16). The gas sampling pipe (6) and the steel wire rope (17) pass through the through hole (22).
3. The gas detection device for a wharf trench according to claim 2, characterized in that, The winding reel (7) has a first pulley (11) installed at the middle of its right end, and the reciprocating screw (14) has a second pulley (12) installed at the middle of its right end. The first pulley (11) and the second pulley (12) are connected by a synchronous belt (13).
4. A gas detection device for a wharf trench according to claim 3, characterized in that, The bottom of the reciprocating screw (14) is provided with a guide rod (15), which is located at the bottom of the reciprocating screw (14) and is slidably connected to the sliding block (16).
5. A gas detection device for a wharf trench according to claim 4, characterized in that, A limiting ring (21) is provided at the bottom center of the gas collection box (3), and the gas collection pipe (6) and the steel wire rope (17) pass through the limiting ring (21).
6. A gas detection device for a wharf trench according to claim 5, characterized in that, The gas sampling pipe (6) and the steel wire rope (17) are fixedly connected by multiple sets of fixing rings (18).