Device for observing welded junction of gas pipeline

Abstract

The utility model discloses a welded junction observation device for a gas pipeline, which belongs to the technical field of welded junction observation devices, and comprises a gas pipeline, a monitoring shell is arranged outside the gas pipeline in a surrounding manner, and the monitoring shell comprises an upper sealing shell and a lower sealing shell. The two ends of the upper sealing shell and the two ends of the lower sealing shell are fixedly connected with fixing plates, a plurality of pairs of fixing plates are connected through a plurality of bolts, a pair of double-layer sealing bags is installed on the inner wall of the upper sealing shell and the inner wall of the lower sealing shell, and sealing gaskets are installed at the ends, abutting against each other, of the upper sealing shell and the lower sealing shell. Visual leakage indication and sound alarm are provided, external personnel are prompted to check in time, and the monitoring efficiency and reliability are improved. The whole device is reasonable in structural design, the long-term monitoring requirement of the gas pipeline welding area can be met, and the safety risk is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of weld joint observation devices, and more specifically, to a device for observing weld joints in gas pipelines. Background Technology

[0002] Currently, the welding quality of gas pipelines directly affects their operational safety and reliability. After welding, gas pipelines typically require sealing tests and long-term monitoring to ensure that the welded areas do not leak during operation. However, because natural gas transported by gas pipelines is flammable and explosive, leaks can easily lead to safety accidents; therefore, sealing monitoring of the welded areas is extremely important.

[0003] Most existing gas pipeline weld joint monitoring devices are relatively simple in design, relying solely on a single sealing structure or periodic manual inspections to determine leaks. This not only results in untimely monitoring but also makes it difficult to achieve long-term real-time monitoring of the welded area, increasing safety hazards. Once a leak occurs, the failure to detect it in time can lead to serious economic losses and environmental problems. Therefore, a device that can provide reliable sealing and real-time feedback is needed to solve these problems.

[0004] Therefore, a device for observing weld joints in gas pipelines is proposed to address the above-mentioned problems. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide an observation device for gas pipeline weld joints. This device can sensitively sense changes in gas pressure, providing intuitive leak indication and audible alarms to promptly alert external personnel for inspection, thus improving monitoring efficiency and reliability. The overall device structure is rationally designed to meet the long-term monitoring needs of gas pipeline welding areas, reducing safety risks.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] A gas pipeline weld observation device includes a gas pipeline, with a monitoring housing surrounding the gas pipeline. The monitoring housing includes an upper sealing housing and a lower sealing housing. Fixing plates are fixedly connected to both ends of the upper and lower sealing housings. Multiple pairs of fixing plates are connected by multiple bolts. A pair of double-layer sealing bladders are installed on the inner walls of the upper and lower sealing housings, and sealing gaskets are installed at the abutting ends of the upper and lower sealing housings. A pair of injection holes are provided on both the upper and lower sealing housings, and the injection holes communicate with the double-layer sealing bladders. A sealing component is installed inside the injection holes. A feedback component is installed at one end of the upper sealing housing.

[0010] Furthermore, the sealing assembly includes a support plate installed on the inner wall of the injection hole, an elastic strip is fixedly connected to one end of the support plate, an elastic sealing ball is fixedly connected to one end of the elastic strip, and the elastic sealing ball abuts against the inner wall of the injection hole.

[0011] Furthermore, a rigid abutment block is fixedly connected to one end of the elastic sealing ball, and the shape of the rigid abutment block is set to arc.

[0012] Furthermore, the feedback component includes a feedback cylinder fixedly connected to the upper sealing housing, the feedback cylinder being in communication with the upper sealing housing, and a sealing block being slidably connected inside the feedback cylinder.

[0013] Furthermore, a feedback rod is fixedly connected to the top of the sealing block, and the feedback rod extends through the feedback cylinder to the outside of the feedback cylinder.

[0014] Furthermore, a fixing block is fixedly connected inside the feedback cylinder, a trigger switch is installed at the bottom of the fixing block, and a buzzer is installed on the feedback cylinder, with the buzzer electrically connected to the trigger switch.

[0015] 3. Beneficial effects

[0016] Compared with existing technologies, the advantages of this utility model are:

[0017] This solution combines an upper and lower sealing shell to form a sealed monitoring chamber. Combined with a double-layered sealing bladder and sealing components, it effectively achieves complete sealing of the welded area. A feedback component enables leak detection and alarm functions. The elastic sealing ball and rigid abutment block in the sealing component ensure convenient gas injection and reliable sealing, preventing gas leakage. The feedback rod and trigger switch in the feedback component sensitively sense changes in gas pressure, providing intuitive leak indication and audible alarms to promptly alert external personnel for inspection, improving monitoring efficiency and reliability. The overall device structure is rationally designed to meet the long-term monitoring needs of gas pipeline welding areas, reducing safety risks. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a front cross-sectional view of the sealing assembly of this utility model;

[0020] Figure 3 This is a front cross-sectional view of the feedback component of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Gas pipeline; 3. Feedback component; 11. Upper sealing housing; 12. Lower sealing housing; 13. Fixing plate; 14. Bolt; 15. Injection hole; 16. Double-layer sealing bladder; 21. Support plate; 22. Elastic strip; 23. Elastic sealing ball; 24. Rigid abutment block; 31. Feedback cylinder; 32. Sealing block; 33. Feedback rod; 34. Fixing block; 35. Trigger switch. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example:

[0027] Please see Figure 1-3 A gas pipeline weld observation device includes a gas pipeline 1, with a monitoring housing surrounding the gas pipeline 1. The monitoring housing includes an upper sealing housing 11 and a lower sealing housing 12. Fixing plates 13 are fixedly connected to both ends of the upper sealing housing 11 and the lower sealing housing 12. Multiple pairs of fixing plates 13 are connected by multiple bolts 14. A pair of double-layer sealing bladders 16 are installed on the inner walls of the upper sealing housing 11 and the lower sealing housing 12. Sealing gaskets are installed at the ends of the upper sealing housing 11 and the lower sealing housing 12 that abut against each other. A pair of injection holes 15 are opened on the upper sealing housing 11 and the lower sealing housing 12. The injection holes 15 are connected to the double-layer sealing bladders 16. A sealing component is installed in the injection hole 15. A feedback component 3 is installed at one end of the upper sealing housing 11.

[0028] The system combines the upper sealing shell 11 and the lower sealing shell 12 to form a sealed monitoring chamber. This, along with the double-layer sealing bladder 16 and sealing assembly 02, effectively achieves complete sealing of the welding area. The feedback assembly 3 provides leak detection and alarm functions. The elastic sealing ball 23 and rigid abutment block 24 in the sealing assembly ensure convenient gas injection and reliable sealing, preventing gas leakage. The feedback rod 33 and trigger switch 35 in the feedback assembly sensitively sense changes in gas pressure, providing intuitive leak indication and audible alarms to promptly alert external personnel for inspection, thus improving monitoring efficiency and reliability. The overall device has a reasonable structural design, meeting the long-term monitoring needs of gas pipeline welding areas and reducing safety risks.

[0029] The sealing assembly includes a support plate 21 installed on the inner wall of the injection hole 15. An elastic strip 22 is fixedly connected to one end of the support plate 21, and an elastic sealing ball 23 is fixedly connected to one end of the elastic strip 22. The elastic sealing ball 23 abuts against the inner wall of the injection hole 15.

[0030] One end of the elastic sealing ball 23 is fixedly connected to a rigid abutment block 24, and the shape of the rigid abutment block 24 is set to arc.

[0031] The sealing assembly includes a support plate 21 installed on the inner wall of the injection hole 15. An elastic strip 22 is fixedly connected to one end of the support plate 21. This elastic strip 22 has good elasticity and flexibility, allowing it to deform under external force and return to its original shape after the force is removed, thus achieving repeatable sealing operations. An elastic sealing ball 23, made of flexible material, is fixedly connected to one end of the elastic strip 22. It abuts against the inner wall of the injection hole 15, ensuring the sealing performance of the injection hole 15 through its own elasticity and deformation.

[0032] One end of the elastic sealing ball 23 is fixedly connected to a rigid abutment block 24. The rigid abutment block 24 is made of rigid material and its corresponding shape is set as arc, which can effectively fit with the injection port of the air pump to ensure the input of air pump. The arc design of the rigid abutment block 24 not only enables it to stably contact the external air pump, but also, through the force of the rigid abutment block 24, the elastic sealing ball 23 is squeezed to open the sealing state, forming a gas channel, so that the gas can enter the double-layer sealing bag 16 through the injection hole 15, and can also achieve the purpose of self-sealing.

[0033] The feedback component 3 includes a feedback cylinder 31 fixedly connected to the upper sealing housing 11. The feedback cylinder 31 is connected to the upper sealing housing 11, and a sealing block 32 is slidably connected inside the feedback cylinder 31.

[0034] A feedback rod 33 is fixedly connected to the top of the sealing block 32. The feedback rod 33 extends through the feedback cylinder 31 to the outside of the feedback cylinder 31.

[0035] A fixing block 34 is fixedly connected inside the feedback cylinder 31. A trigger switch 35 is installed at the bottom of the fixing block 34. A buzzer is installed on the feedback cylinder 31 and is electrically connected to the trigger switch 35.

[0036] The feedback component 3 includes a feedback cylinder 31 fixedly connected to the upper sealing housing 11. The feedback cylinder 31 is in communication with the upper sealing housing 11 and can transmit the pressure changes inside the upper sealing housing 11 to the inside of the feedback cylinder 31. A sealing block 32 is slidably connected inside the feedback cylinder 31. The sealing block 32 can slide inside the feedback cylinder 31 according to the pressure changes and maintains the airtightness inside the feedback cylinder 31 through the sealing structure.

[0037] A feedback rod 33 is fixedly connected to the top of the sealing block 32. The feedback rod 33 passes through the feedback cylinder 31 and extends to the outside of the feedback cylinder 31. The displacement of the sealing block 32 under air pressure will directly drive the feedback rod 33 to move up and down. The change in the external position of the feedback rod 33 can intuitively reflect the change in air pressure inside the upper sealing shell 11, thus providing a basis for external personnel to judge leakage.

[0038] A fixing block 34 is fixedly connected inside the feedback cylinder 31, and a trigger switch 35 is installed at the bottom of the fixing block 34. When the sealing block 32 continues to move upward to a certain position under the action of gas pressure, it will squeeze the fixing block 34, thereby triggering the trigger switch 35. The trigger switch 35 is electrically connected to a buzzer installed on the feedback cylinder 31. After the trigger switch 35 is activated, it will activate the buzzer to emit an alarm signal, reminding personnel that there may be a leak in the welded area of ​​the gas pipeline.

[0039] Working principle:

[0040] By installing the upper sealing housing 11 and the lower sealing housing 12 in the welding area of ​​the gas pipeline 1 and fixing them with bolts 14 and fixing plates 13, and simultaneously inflating the double-layer sealing bladder 16 on its inner wall through the injection hole 15, the double-layer sealing bladder 16 tightly fits the outer wall of the gas pipeline 1, forming a sealed monitoring chamber. When a leak occurs in the welding area of ​​the gas pipeline 1, the leaked gas enters the monitoring chamber, causing the gas pressure in the upper sealing housing 11 to rise. The gas pressure change is transmitted to the slidingly connected sealing block 32 through the feedback cylinder 31, pushing the sealing block 32 to move the feedback rod 33 upward. External personnel can visually judge the leak situation through the displacement of the feedback rod 33. When the gas pressure rises further, the sealing block 32 squeezes the fixing block 34 to trigger the trigger switch 35, activating the buzzer to emit an alarm signal, reminding external personnel to check in time. At the same time, the sealing assembly ensures convenient gas injection operation and reliable sealing through the cooperation of the elastic sealing ball 23 and the rigid abutment block 24, realizing long-term monitoring of the welding area and efficient leak alarm function.

[0041] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A device for observing weld joints in gas pipelines, comprising a gas pipeline (1), characterized in that: The gas pipeline (1) is surrounded by a monitoring housing, which includes an upper sealing housing (11) and a lower sealing housing (12). Both ends of the upper sealing housing (11) and the lower sealing housing (12) are fixedly connected to a fixing plate (13). Multiple pairs of fixing plates (13) are connected by multiple bolts (14). A pair of double-layer sealing bladders (16) are installed on the inner walls of the upper sealing housing (11) and the lower sealing housing (12). A sealing gasket is installed at one end of the upper sealing housing (11) and the lower sealing housing (12) that abuts against each other. A pair of injection holes (15) are opened on the upper sealing housing (11) and the lower sealing housing (12). The injection holes (15) are connected to the double-layer sealing bladders (16). A sealing component is installed in the injection hole (15). A feedback component (3) is installed at one end of the upper sealing housing (11).

2. The observation device for gas pipeline weld joints according to claim 1, characterized in that: The sealing assembly includes a support plate (21) installed on the inner wall of the injection hole (15). One end of the support plate (21) is fixedly connected to an elastic strip (22), and one end of the elastic strip (22) is fixedly connected to an elastic sealing ball (23). The elastic sealing ball (23) abuts against the inner wall of the injection hole (15).

3. The observation device for gas pipeline weld joints according to claim 2, characterized in that: One end of the elastic sealing ball (23) is fixedly connected to a rigid abutment block (24), and the shape of the rigid abutment block (24) is set to arc.

4. The observation device for gas pipeline weld joints according to claim 1, characterized in that: The feedback component (3) includes a feedback cylinder (31) fixedly connected to the upper sealing housing (11), the feedback cylinder (31) being in communication with the upper sealing housing (11), and a sealing block (32) being slidably connected inside the feedback cylinder (31).

5. A device for observing weld joints in gas pipelines according to claim 4, characterized in that: The top of the sealing block (32) is fixedly connected to a feedback rod (33), which extends through the feedback cylinder (31) to the outside of the feedback cylinder (31).

6. The observation device for gas pipeline weld joints according to claim 4, characterized in that: A fixing block (34) is fixedly connected inside the feedback cylinder (31). A trigger switch (35) is installed at the bottom of the fixing block (34). A buzzer is installed on the feedback cylinder (31). The buzzer is electrically connected to the trigger switch (35).

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