A device for detecting leakage at a connection of a thermal insulation pipe

Abstract

The application discloses a kind of leakage detection devices of heat preservation pipeline connecting place, it is related to pipeline leakage detection technical field, including pipeline body, the pipeline body is fixedly connected with sealing shell, sealing shell is fixedly connected with electric telescopic rod.The application is moved to the position of pipeline joint by the setting of protection unit, when sealing ring is contacted with pipeline joint when annular sleeve is driven by electric telescopic rod, sealing ring stops moving, annular sleeve continues to move by electric telescopic rod, so that extrusion spring is pressed on pipeline joint, in turn can seal pipeline joint, simultaneously sliding piston rod is contacted with fixed block, so that sliding piston rod enters fixed cylinder, and oil liquid in fixed cylinder is extruded into annular shell by connecting pipe one by the movement of sliding piston rod, oil liquid in annular shell drives movable ring to move outward, so that movable ring is pressed on pipeline joint by sealing ring, to improve the sealing effect of pipeline joint.

Description

Technical Field

[0001] This invention relates to the field of pipeline leakage detection technology, and in particular to a leakage detection device for insulated pipeline connections. Background Technology

[0002] Insulated pipes are widely used in district heating, petrochemicals, natural gas transmission, and industrial steam transmission. Leaks can cause significant energy waste and economic losses; if the medium is flammable, explosive, or toxic gas, they can also pose serious safety hazards and even lead to major accidents.

[0003] Chinese patent CN220017037U discloses a leak detection device for steam insulation pipes, including a pipe shell, a clamp on the top of the pipe shell, a mounting base on the top of the clamp, the clamp being fixedly connected to the mounting base, a stainless steel shell on the top of the mounting base, an LCD screen on the top of the stainless steel shell, the stainless steel shell being fixedly connected to the LCD screen, and an infrared sensor receiver on the top of the stainless steel shell, the stainless steel shell being fixedly connected to the infrared sensor receiver.

[0004] Based on the above research and existing technology, it was found that the leakage process is continuous from the time the system alarms until maintenance personnel arrive on-site and locate the leak. Existing detection devices only play a "post-incident notification" role and cannot perform any form of preliminary isolation or sealing of the leak point. This means that valuable energy or media continue to leak during maintenance preparation, causing avoidable waste and safety risks. Alarm systems can usually only notify of a leak in a certain area or pipeline, but cannot accurately indicate which specific pipe joint is faulty. Personnel must carry detection equipment to check each joint one by one, a time-consuming and labor-intensive process that severely delays repair time, causing the leakage damage to continue to expand. Summary of the Invention

[0005] The purpose of this invention is to provide a leak detection device for the connection of insulated pipes to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is: a leak detection device for the connection of an insulated pipe, comprising a pipe body, a sealing shell fixedly connected to the pipe body, an electric telescopic rod fixedly connected to the sealing shell, and further comprising:

[0007] The protective mechanism is located on the sealed shell;

[0008] The protective mechanism includes a protective unit, a rotating unit, and an inflation unit. The protective unit includes an annular sleeve slidably connected to the pipe body. The output end of the electric telescopic rod is fixedly connected to the annular sleeve. A sealing ring is slidably connected to the inner wall of the annular sleeve. A fixed cylinder is fixedly connected to the annular sleeve. A sliding piston rod is slidably connected to the fixed cylinder. A connecting pipe is fixedly connected to the fixed cylinder. One end of the connecting pipe is fixedly connected to the annular sleeve. A circular shell is fixedly connected to the inner wall of the annular sleeve. A movable ring is slidably connected to the circular shell. The connecting pipe is connected to the circular shell. A fixed block is fixedly connected to the inner wall of the sealing shell. When the sliding piston rod moves in the opposite direction to the electric telescopic rod, it can contact the fixed block.

[0009] Preferably, the inner wall of the annular sleeve is fixedly connected with a plurality of compression springs, and one end of each of the plurality of compression springs is fixedly connected to the sealing ring.

[0010] Preferably, a return spring is sleeved on the sliding piston rod, and the two ends of the return spring are fixedly connected to the sliding piston rod and the fixed cylinder, respectively.

[0011] Preferably, the rotating unit includes a fixed seat fixedly connected to the sealing shell, a rotating tube rotatably connected to the fixed seat, a rotating ring fixedly connected to the rotating tube, a fixed ring and multiple sleeve rings sleeved on the rotating tube, a fixed rod fixedly connected to each of the rotating ring, the fixed ring and the multiple sleeve rings, a piece of fabric, which is red, is fixedly connected to two adjacent fixed rods, a gear is fixedly connected to the rotating tube, and a fixed cylinder is fixedly connected to both the fixed ring and the fixed seat.

[0012] Preferably, a sliding rod is slidably connected to the sealing shell, one end of the sliding rod is fixedly connected to a rack, the rack meshes with a gear, and the other end of the sliding rod is fixedly connected to a mounting block, which is fixedly connected to the annular sleeve.

[0013] Preferably, a cylindrical rod is fixedly connected to one of the fixed rods, and the cylindrical rod is in contact with the other plurality of fixed rods.

[0014] Preferably, the inflation unit includes an installation cylinder fixedly connected to the sealing shell, a second connecting pipe fixedly connected to the installation cylinder, one end of the second connecting pipe being rotatably connected to one end of a rotating pipe, the other end of the rotating pipe being fixedly connected to a fixed pipe, a movable rod being slidably connected to the fixed pipe, the movable rod being red, and a movable plate being slidably connected inside the installation cylinder.

[0015] Preferably, the mounting cylinder is provided with a connecting spring, and the two ends of the connecting spring are fixedly connected to the movable plate and the mounting cylinder, respectively.

[0016] Preferably, a pressure sensor is connected to the top inner wall of the mounting cylinder, and the pressure sensor is connected to an external alarm system via wireless technology.

[0017] This invention provides an improved air leakage detection device for insulated pipe connections, which has the following improvements and advantages compared to the prior art:

[0018] Firstly, this invention, through the setting of the protective unit, allows the electric telescopic rod to move the annular sleeve towards the pipe joint. The movement of the annular sleeve causes the compression spring and sealing ring to move. When the sealing ring contacts the pipe joint, it stops moving. The electric telescopic rod continues to move the annular sleeve, which in turn compresses and elastically deforms the compression spring, pressing the sealing ring onto the pipe joint and thus sealing it. Simultaneously, the sliding piston rod contacts the fixed block, causing it to enter the fixed cylinder. The movement of the sliding piston rod forces the oil in the fixed cylinder through the connecting pipe into the annular shell. The oil entering the annular shell causes the movable ring to move outward, pressing the sealing ring onto the pipe joint, thereby improving the sealing effect of the pipe joint.

[0019] Secondly, the present invention, through the setting of the rotating unit, the annular sleeve moves through the mounting block and the sliding rod. The movement of the sliding rod drives the rack to move, the movement of the rack drives the gear and the rotating tube to rotate, and the rotation of the rotating tube drives the rotating ring to rotate. Since multiple fixed rods and multiple pieces of cloth can be combined to form a fan-shaped observation part, the rotation of the rotating ring drives the fan-shaped observation part to unfold, and the cloth is red, thus making it easy to observe the fan-shaped observation part.

[0020] Thirdly, this invention, through the setting of the inflation unit, rotates the rotating tube, which drives the fixed tube and the movable rod to rotate until the fixed tube rotates to a vertical state. As the movable plate moves, the gas in the installation cylinder can be squeezed into the fixed tube through the connecting tube and the rotating tube. The gas entering the fixed tube drives the movable rod to move outward. The fixed tube and the movable rod can be combined to form a telescopic rod, which extends the telescopic rod, making it easier to observe the leaking joint of the pipeline from a distance. This makes it easier for workers to find the leaking pipeline joint in time, so that when a pipeline joint leaks, the pipeline can be sealed in time, and at the same time, it is easy for workers to find the leaking pipeline joint. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the internal cross-sectional structure of the sealing shell from a first-view perspective in this invention;

[0024] Figure 3 This is a schematic diagram of the internal cross-sectional structure of the sealing shell from a second perspective in this invention;

[0025] Figure 4 This is a three-dimensional structural diagram of the rotating unit in this invention;

[0026] Figure 5 For the present invention Figure 3 Enlarged structural diagram at point A in the middle;

[0027] Figure 6 This is a schematic diagram of the internal cross-sectional structure of the mounting cylinder in this invention;

[0028] Figure 7 This is a three-dimensional structural diagram of the inflation unit in this invention.

[0029] Figure label:

[0030] 1. Pipe body; 11. Sealing shell; 12. Electric telescopic rod; 13. Annular sleeve; 14. Sealing ring; 15. Compression spring; 16. Circular shell; 17. Movable ring; 18. Fixed cylinder; 19. Connecting pipe one; 110. Sliding piston rod; 111. Return spring; 112. Fixed block; 2. Fixed seat; 21. Rotating pipe; 22. Rotating ring; 23. Collar; 24. Fixed ring; 25. Fixed cylinder; 26. Fixed rod; 27. Cylindrical rod; 28. Gear; 29. ​​Rack; 210. Sliding rod; 211. Mounting block; 3. Fixed pipe; 31. Movable rod; 4. Mounting cylinder; 41. Connecting pipe two; 42. Pressure sensor; 43. Movable plate; 44. Connecting spring. Detailed Implementation

[0031] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] This invention provides an improved air leakage detection device for insulated pipe connections. The technical solution of this invention is as follows:

[0033] like Figures 1 to 7As shown, this embodiment of the invention provides a leak detection device for the connection of an insulated pipe, including a pipe body 1, a sealing shell 11 fixedly connected to the pipe body 1, an electric telescopic rod 12 fixedly connected to the sealing shell 11, and further including:

[0034] The protective mechanism is located on the sealing shell 11;

[0035] The protective mechanism includes a protective unit, a rotating unit, and an inflation unit. The protective unit includes an annular sleeve 13 slidably connected to the pipe body 1. The output end of the electric telescopic rod 12 is fixedly connected to the annular sleeve 13. A sealing ring 14 is slidably connected to the inner wall of the annular sleeve 13. A fixed cylinder 18 is fixedly connected to the annular sleeve 13. A sliding piston rod 110 is slidably connected to the fixed cylinder 18. A connecting pipe 19 is fixedly connected to the fixed cylinder 18. One end of the connecting pipe 19 is fixedly connected to the annular sleeve 13. A circular shell 16 is fixedly connected to the inner wall of the annular sleeve 13. A movable ring 17 is slidably connected to the circular shell 16. The connecting pipe 19 communicates with the circular shell 16. A fixed block 112 is fixedly connected to the inner wall of the sealing shell 11. When the sliding piston rod 110 moves in the opposite direction to the electric telescopic rod 12, it can contact the fixed block 112. Multiple compression springs 15 are fixedly connected to the inner wall of the annular sleeve 13. One end of each compression spring 15 is fixedly connected to... The sealing ring 14 is attached to the protective unit. When the electric telescopic rod 12 moves the annular sleeve 13 to the pipe joint position, the movement of the annular sleeve 13 causes the compression spring 15 and the sealing ring 14 to move. When the sealing ring 14 contacts the pipe joint, the sealing ring 14 stops moving. The electric telescopic rod 12 continues to move the annular sleeve 13. The movement of the annular sleeve 13 causes the compression spring 15 to compress and undergo elastic deformation, so that the compression spring 15 presses the sealing ring 14 onto the pipe joint, thereby sealing the pipe joint. At the same time, the sliding piston rod 110 contacts the fixed block 112, so that the sliding piston rod 110 enters the fixed cylinder 18. The movement of the sliding piston rod 110 squeezes the oil in the fixed cylinder 18 into the annular shell 16 through the connecting pipe 19. The oil entering the annular shell 16 drives the movable ring 17 to move outward, so that the movable ring 17 presses the sealing ring 14 onto the pipe joint, thereby improving the sealing effect of the pipe joint.

[0036] Furthermore, a return spring 111 is sleeved on the sliding piston rod 110, and the two ends of the return spring 111 are fixedly connected to the sliding piston rod 110 and the fixed cylinder 18 respectively. With the setting of the return spring 111, when the sliding piston rod 110 moves away from the fixed block 112, the return spring 111 drives the sliding piston rod 110 to reset.

[0037] Furthermore, the rotating unit includes a fixed base 2 fixedly connected to the sealing shell 11, a rotating tube 21 rotatably connected to the fixed base 2, a rotating ring 22 fixedly connected to the rotating tube 21, a fixed ring 24 and multiple collars 23 sleeved on the rotating tube 21, a fixed rod 26 fixedly connected to the rotating ring 22, the fixed ring 24 and the multiple collars 23, and a piece of fabric, which is red, is fixedly connected to two adjacent fixed rods 26. A gear 28 is fixedly connected to the rotating tube 21, a fixed cylinder 25 is fixedly connected to the fixed ring 24 and the fixed base 2, and a sliding rod 210 is slidably connected to the sealing shell 11, with one end of the sliding rod 210 fixed... A rack 29 is connected, which meshes with a gear 28. The other end of a sliding rod 210 is fixedly connected to a mounting block 211, which is fixedly connected to an annular sleeve 13. Through the setting of the rotating unit, the annular sleeve 13 moves via the mounting block 211 and the sliding rod 210. The movement of the sliding rod 210 drives the rack 29 to move, which in turn drives the gear 28 and the rotating tube 21 to rotate. The rotation of the rotating tube 21 drives the rotating ring 22 to rotate. Since multiple fixed rods 26 and multiple pieces of fabric can be combined to form a fan-shaped observation section, the rotation of the rotating ring 22 causes the fan-shaped observation section to unfold, and the fabric is red, making it easy to observe the fan-shaped observation section.

[0038] Furthermore, a cylindrical rod 27 is fixedly connected to one of the fixed rods 26, and the cylindrical rod 27 is in contact with the other fixed rods 26. With the setting of the cylindrical rod 27, when the rotating tube 21 drives the fan-shaped observation part to retract, the cylindrical rod 27 can drive the multiple fixed rods 26 to reset, thus realizing the retraction of the multiple fixed rods 26.

[0039] Furthermore, the inflation unit includes an installation cylinder 4 fixedly connected to the sealing shell 11. A connecting pipe 41 is fixedly connected to the installation cylinder 4. One end of the connecting pipe 41 is rotatably connected to one end of the rotating pipe 21. The other end of the rotating pipe 21 is fixedly connected to a fixed pipe 3. A movable rod 31 is slidably connected to the fixed pipe 3. The movable rod 31 is red. A movable plate 43 is slidably connected inside the installation cylinder 4. With the inflation unit, the rotating pipe 21 rotates, driving the fixed pipe 3 and the movable rod 31 to rotate until the fixed pipe 3 rotates to a vertical position. As the movable plate 43 moves, the gas in the installation cylinder 4 can be squeezed into the fixed pipe 3 through the connecting pipe 41 and the rotating pipe 21. The gas entering the fixed pipe 3 drives the movable rod 31 to move outward. The fixed pipe 3 and the movable rod 31 can be combined to form a telescopic rod, which extends the telescopic rod, making it easier to observe the leaking joint of the pipeline from a distance, and thus making it easier for staff to find the leaking pipeline joint in time.

[0040] Furthermore, the mounting cylinder 4 is provided with a connecting spring 44, and the two ends of the connecting spring 44 are fixedly connected to the movable plate 43 and the mounting cylinder 4 respectively; by setting the connecting spring 44, the connecting spring 44 is used to drive the movable plate 43 to reset.

[0041] Furthermore, a pressure sensor 42 is connected to the top inner wall of the mounting cylinder 4. The pressure sensor 42 is connected to an external alarm system via wireless technology. With the setting of the pressure sensor 42, when air leakage occurs at the joint of the pipeline, the air pressure inside the sealing shell 11 gradually increases. The gradually increasing air pressure drives the movable plate 43 to move upward until the movable plate 43 contacts the pressure sensor 42 and triggers the alarm. This realizes that when the pipeline leaks, the pressure sensor 42 can wirelessly feed back the pressure signal change to the external alarm system, and the external alarm system will sound an alarm to remind relevant personnel to come for maintenance.

[0042] Specific implementation steps: When air leakage occurs at the pipe joint, the air pressure inside the sealing shell 11 gradually increases. The gradually increasing air pressure drives the movable plate 43 to move upward. The movement of the movable plate 43 causes the connecting spring 44 to compress and undergo elastic deformation until the movable plate 43 contacts the pressure sensor 42 and triggers an alarm. At the same time, the electric telescopic rod 12 is activated, driving the annular sleeve 13 to move towards the pipe joint. The movement of the annular sleeve 13 causes the compression spring 15 and the sealing ring 14 to move. Simultaneously, the movement of the annular sleeve 13 causes the fixed cylinder 18, the connecting pipe 19, and the sliding piston rod 110 to move. When the sealing ring 14 contacts the pipe... When the joint contacts, the sealing ring 14 stops moving, and the electric telescopic rod 12 drives the annular sleeve 13 to move continuously. The movement of the annular sleeve 13 causes the compression spring 15 to compress and undergo elastic deformation, so that the compression spring 15 presses the sealing ring 14 onto the pipe joint, thereby sealing the pipe joint. At the same time, the sliding piston rod 110 contacts the fixed block 112, so that the sliding piston rod 110 enters the fixed cylinder 18. The movement of the sliding piston rod 110 causes the return spring 111 to compress and undergo elastic deformation. The movement of the sliding piston rod 110 forces the oil in the fixed cylinder 18 through the connecting pipe 19 into the annular shell 16, and into the annular shell 16. The oil inside the annular shell 16 drives the movable ring 17 to move outward, causing the movable ring 17 to press the sealing ring 14 onto the pipe joint, thereby improving the sealing effect of the pipe joint. The annular sleeve 13 moves via the mounting block 211 and the sliding rod 210. The movement of the sliding rod 210 drives the rack 29 to move, which in turn drives the gear 28 and the rotating tube 21 to rotate. The rotation of the rotating tube 21 drives the rotating ring 22 to rotate. Since multiple fixed rods 26 and multiple pieces of fabric can be combined to form a fan-shaped observation section, the rotation of the rotating ring 22 causes the fan-shaped observation section to unfold, and the fabric is red, making it easy to observe the fan-shaped observation section. The rotating tube 2... 1. Rotation drives the fixed pipe 3 and the movable rod 31 to rotate until the fixed pipe 3 rotates to a vertical position. As the movable plate 43 moves, it can squeeze the gas in the installation cylinder 4 into the fixed pipe 3 through the connecting pipe 41 and the rotating pipe 21. The gas entering the fixed pipe 3 drives the movable rod 31 to move outward. The fixed pipe 3 and the movable rod 31 can be combined to form a telescopic rod, which makes it easier to observe the leaking joint of the pipeline from a distance. This makes it easier for the staff to find the leaking pipe joint in time. When the pipe joint leaks, the pipeline can be sealed in time, and the staff can find the leaking pipe joint.

[0043] The foregoing description enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A leak detection device for a thermal insulation pipe connection, comprising a pipe body (1), characterized in that: A sealing shell (11) is fixedly connected to the pipe body (1), and an electric telescopic rod (12) is fixedly connected to the sealing shell (11). The pipe also includes: The protective mechanism is located on the sealed shell (11); The protective mechanism includes a protective unit, a rotating unit, and an inflation unit. The protective unit includes an annular sleeve (13) slidably connected to the pipe body (1). The output end of the electric telescopic rod (12) is fixedly connected to the annular sleeve (13). A sealing ring (14) is slidably connected to the inner wall of the annular sleeve (13). A fixed cylinder (18) is fixedly connected to the annular sleeve (13). A sliding piston rod (110) is slidably connected to the fixed cylinder (18). A connecting pipe (19) is fixedly connected to the fixed cylinder (18). One end of the connecting pipe (19) is fixedly connected to the annular sleeve (13). A circular shell (16) is fixedly connected to the inner wall of the annular sleeve (13). A movable ring (17) is slidably connected to the circular shell (16). The connecting pipe (19) is connected to the circular shell (16). A fixed block (112) is fixedly connected to the inner wall of the sealing shell (11). When the sliding piston rod (110) moves in the opposite direction to the electric telescopic rod (12), it can contact the fixed block (112).

2. The air leakage detection device at the connection of an insulated pipe according to claim 1, characterized in that: The inner wall of the annular sleeve (13) is fixedly connected with a plurality of compression springs (15), and one end of each of the plurality of compression springs (15) is fixedly connected to the sealing ring (14).

3. The air leakage detection device at the connection of an insulated pipe according to claim 2, characterized in that: A return spring (111) is sleeved on the sliding piston rod (110), and the two ends of the return spring (111) are fixedly connected to the sliding piston rod (110) and the fixed cylinder (18) respectively.

4. The air leakage detection device at the connection of an insulated pipe according to claim 2, characterized in that: The rotating unit includes a fixed seat (2) fixedly connected to the sealing shell (11), a rotating tube (21) rotatably connected to the fixed seat (2), a rotating ring (22) fixedly connected to the rotating tube (21), a fixed ring (24) and multiple collars (23) sleeved on the rotating tube (21), a fixed rod (26) fixedly connected to the rotating ring (22), the fixed ring (24) and the multiple collars (23), and two adjacent fixed rods (26) are fixedly connected to a piece of fabric, which is red. A gear (28) is fixedly connected to the rotating tube (21), and a fixed cylinder (25) is fixedly connected to the fixed ring (24) and the fixed seat (2).

5. The air leakage detection device at the connection of an insulated pipe according to claim 4, characterized in that: A sliding rod (210) is slidably connected to the sealing shell (11). A rack (29) is fixedly connected to one end of the sliding rod (210). The rack (29) meshes with a gear (28). An mounting block (211) is fixedly connected to the other end of the sliding rod (210). The mounting block (211) is fixedly connected to the annular sleeve (13).

6. The air leakage detection device at the connection of an insulated pipe according to claim 4, characterized in that: A cylindrical rod (27) is fixedly connected to one of the fixed rods (26), and the cylindrical rod (27) is in contact with the other fixed rods (26).

7. The air leakage detection device at the connection of an insulated pipe according to claim 4, characterized in that: The inflation unit includes an installation cylinder (4) fixedly connected to a sealing shell (11). A connecting pipe (41) is fixedly connected to the installation cylinder (4). One end of the connecting pipe (41) is rotatably connected to one end of a rotating pipe (21). The other end of the rotating pipe (21) is fixedly connected to a fixed pipe (3). A movable rod (31) is slidably connected to the fixed pipe (3). The movable rod (31) is red. A movable plate (43) is slidably connected inside the installation cylinder (4).

8. The air leakage detection device at the connection of an insulated pipe according to claim 7, characterized in that: The mounting cylinder (4) is provided with a connecting spring (44), and the two ends of the connecting spring (44) are fixedly connected to the movable plate (43) and the mounting cylinder (4) respectively.

9. A leak detection device for a thermal insulation pipe connection according to claim 8, characterized in that: A pressure sensor (42) is connected to the top inner wall of the mounting cylinder (4), and the pressure sensor (42) is connected to an external alarm system via wireless technology.

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