An insulated joint having high sealing properties

Abstract

The application relates to the technical field of pipe joint, and discloses an insulation joint with high sealing performance, which comprises a connecting head, a sleeve cylinder, insulation filler and a U-shaped sealing ring, the sleeve cylinder is sleeved on the outside of the connecting head, the connecting head and the sleeve cylinder are filled with the insulation filler, the inside of the connecting head is provided with the U-shaped sealing ring, the inside of the connecting head is provided with a sealing stability assembly, the sealing stability assembly comprises an insulation plate arranged in the inside of the connecting head; the inside pressure of the pipeline is sensed, the compression state of the buffer piece group is dynamically adjusted, a buffer is installed for the sealing system, the buffer not only provides an initial sealing force, but also reduces the risk of damage of the sealing element caused by pressure pulsation, so that the sealing reliability of the joint under complex working conditions is fundamentally improved; through the negative pressure detection mechanism, operation and maintenance personnel can timely find faults and arrange maintenance in a planned way, and economic loss and safety risks caused by leakage accidents and non-planned shutdowns are avoided.

Description

Technical Field

[0001] This invention relates to the field of pipe fittings, and more specifically to an insulating fitting with high sealing performance. Background Technology

[0002] An insulating joint is a general term for a pipe joint that simultaneously possesses the sealing performance, strength performance, and insulation performance required for buried steel pipelines under electrical corrosion conditions. It includes components such as assemblies, insulating plates, insulating fillers, insulating rings, and short sections.

[0003] Existing insulating joints generally adopt a static pre-tightening sealing structure, whose sealing performance depends on the pre-tightening force applied during initial installation. When faced with dynamic loads such as pressure pulsation and water hammer effect that are unavoidable in the actual operation of pipeline systems, this rigid structure lacks effective pressure buffering and adaptive adjustment capabilities. The sealing element is subjected to alternating stress for a long time, which easily leads to fatigue aging and permanent compression deformation, resulting in a decline in sealing performance and a high risk of leakage under pressure impact. Secondly, most insulating joints on the market are closed "black box" systems, and the deterioration process of the internal sealing and insulation status cannot be monitored in real time, which can easily lead to unplanned shutdowns and secondary safety accidents.

[0004] In addition, the existing insulation joint design has a single function, focusing on the basic function of "isolation" and lacking proactive response measures after leakage. Once a leakage occurs, the system itself has no emergency response mechanism and requires external manual intervention. From discovering the leakage and locating the fault to organizing emergency repairs, the entire response process is lengthy. During this period, the leakage will continue to expand, and safety risks and environmental pollution problems are prominent.

[0005] Finally, most mainstream products adopt a welded or one-time encapsulated integral structure. When the internal seals or insulation components deteriorate due to normal aging, the local replacement process is cumbersome. It requires cutting the entire joint off the pipeline, which involves shutting down the pipeline, hot work, replacing the joint with a new one, and re-welding for corrosion protection.

[0006] Therefore, there is a need to provide an insulating joint with high sealing performance to solve the above problems. Summary of the Invention

[0007] In view of the shortcomings of the existing technology, the purpose of this invention is to provide an insulating joint with high sealing performance.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a highly sealing insulating joint, comprising a connector, a sleeve cylinder, insulating filler, and a U-shaped sealing ring, wherein the sleeve cylinder is sleeved on the outside of the connector, insulating filler is filled between the connector and the sleeve cylinder, a U-shaped sealing ring is provided inside the connector, and a sealing stabilizing component is provided inside the connector.

[0009] The sealing and stabilizing assembly includes an insulating plate disposed inside the connector. A limiting ring is fitted around the outer side of the insulating plate, and the insulating plate is snapped into the inside of the connector by the limiting ring. A U-shaped sealing ring is fitted around the outer side of the insulating plate. O-rings are symmetrically arranged at the bottom of the insulating plate. Buffer pads are arranged on the inner side of each of the two O-rings. Several first return springs are arranged in a ring between the two buffer pad groups. The two ends of each first return spring are fixedly connected to the buffer pad group. Several vent holes are symmetrically distributed in a ring around the insulating plate as the axis of the connector.

[0010] Preferably, the cylinder is provided with a detection and sealing component, which includes a detection groove on the cylinder. Both the cylinder and the connector are provided with pressure holes, which are connected to the detection groove. A sealing plug is provided at the end of the pressure hole away from the detection groove, and a one-way air valve is provided inside the pressure hole.

[0011] Preferably, the detection and sealing assembly further includes a detection cylinder, which is disposed above the detection groove. A positioning ring is fixedly connected to the inner wall of the detection cylinder, and a piston rod is slidably connected inside the positioning ring. A second return spring is provided between the positioning ring and the piston rod, with both ends of the second return spring fixedly connected to the positioning ring and the piston rod, respectively. A conductive sheet is fixedly connected to the top of the piston rod, and a signal transmission sheet is fixedly connected to the top of the detection cylinder.

[0012] Preferably, the detection and sealing assembly further includes a micro air pump, which is installed inside the cylinder. An annular expansion airbag is provided in the detection groove. An air guide pipe is provided at the air delivery end of the micro air pump, and the end of the air guide pipe away from the micro air pump is connected to the annular expansion airbag.

[0013] Preferably, the connector has symmetrically arranged fixing components inside, each fixing component including a double-layer groove. The double-layer groove is formed inside the connector, and a gear rod is rotatably connected inside the double-layer groove. A ratchet is fixedly connected to the bottom of the gear rod, and a telescopic rod is fixedly connected to the bottom of the double-layer groove. A limit tooth is rotatably connected to the top of the telescopic rod, and a return torsion spring is fixedly connected to the bottom of the limit tooth. The end of the return torsion spring away from the limit tooth is fixedly connected to the telescopic rod. A rack plate is symmetrically fixedly connected to the inner wall of the sleeve cylinder.

[0014] Preferably, the fixing component further includes a rectangular insulating plate, which is disposed between the connector and the sleeve cylinder, and a plurality of stabilizing blocks are symmetrically fixedly connected to the outer wall of the rectangular insulating plate.

[0015] Preferably, a plurality of the first reset springs are disposed on the outer side of the insulating plate, the O-ring is disposed below the U-ring, and the vent is located below the buffer plate assembly.

[0016] Preferably, the signal transmission plate is electrically connected to the micro air pump and the telescopic rod.

[0017] Preferably, the rack plate meshes with the gear rod.

[0018] Preferably, both the connector and the sleeve cylinder have grooves identical to those of the stabilizing block, and the stabilizing block is embedded between the connector and the sleeve cylinder.

[0019] The present invention provides a highly sealing insulating joint, and compared with the prior art, the advantages of the present invention are as follows:

[0020] The pressure compensation design of this structure dynamically adjusts the compression state of the buffer plate group by sensing the internal pressure of the pipeline, which is equivalent to installing a "buffer" for the sealing system. It not only provides the initial sealing force, but also actively balances the pressure inside and outside the sealing cavity when the pipeline pressure rises, reducing the risk of damage to the sealing components due to pressure pulsation, and fundamentally improving the sealing reliability of the joint under complex working conditions.

[0021] The negative pressure detection mechanism enables the spring to reset and ultimately connect the circuit to issue a remote alarm in the early stages of seal failure and when the leakage is minimal. This allows maintenance personnel to detect faults in a timely manner, schedule maintenance in a planned manner, and avoid economic losses and safety risks caused by leakage accidents and unplanned downtime.

[0022] By linking detection and execution, a closed-loop emergency response is formed. Once a leak is detected, the system will automatically initiate two tasks: first, drive the miniature air pump to inflate the annular expansion airbag to achieve initial temporary sealing, buying time for emergency repairs; second, automatically release the mechanical interlock to prepare for subsequent disassembly, shortening the maintenance window after emergency response. This integrated automated process of "detection, alarm, sealing, and preparation" adds an extra layer of safety to pipelines.

[0023] Through the mechanical interlocking mechanism of gear rod, rack plate, and ratchet, a rigid connection and quick release between the sleeve cylinder and the connector are achieved. This allows maintenance personnel to open the connector non-destructively and replace vulnerable parts such as internal U-shaped seals and O-shaped seals without damaging the connector body or pipeline when maintenance is required. This design transforms the insulating connector from a "disposable" consumable into a "maintainable" device. Attached Figure Description

[0024] Figure 1 This is a cross-sectional view of the overall device in this invention;

[0025] Figure 2 This is a schematic diagram showing the positional relationship between the connector, sleeve cylinder, and insulating filler in this invention;

[0026] Figure 3 For the present invention Figure 2 Enlarged view of the structure at point A in the middle;

[0027] Figure 4 For the present invention Figure 2 Enlarged view of the structure at point B in the middle;

[0028] Figure 5 This is a schematic diagram showing the positional relationship between the sleeve cylinder, the pressure hole, and the rack plate in this invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point C;

[0030] Figure 7 This is a schematic diagram showing the positional relationship between the detection cylinder, positioning ring, piston rod, second reset spring, and conductive sheet in this invention.

[0031] Figure 8 This is a schematic diagram showing the positional relationship between the miniature air pump, the annular inflatable airbag, and the air duct in this invention;

[0032] Figure 9 For the present invention Figure 8 Enlarged view of the structure at point D;

[0033] Figure 10 This is a schematic diagram showing the positional relationship between the gear rod, rack plate, and rectangular insulating plate in this invention;

[0034] Figure 11 This is a schematic diagram showing the positional relationship between the double-layer groove, gear rod, and ratchet in this invention;

[0035] Figure 12 For the present invention Figure 11 Enlarged view of the structure at point E in the middle;

[0036] Figure 13 This is a schematic diagram of the overall device structure in this invention.

[0037] Reference numerals: 11. Connector; 12. Sleeve cylinder; 13. Insulating packing; 14. U-shaped sealing ring;

[0038] The sealing and stabilizing assembly includes: 21, an insulating plate; 22, a limiting ring; 23, an O-ring seal; 24, a buffer plate assembly; 25, a first return spring; and 26, a vent.

[0039] The detection and sealing assembly includes: 31, detection groove; 32, pressure application hole; 33, sealing plug; 34, detection cylinder; 35, positioning ring; 36, piston rod; 37, second return spring; 38, conductive sheet; 39, signal transmission sheet; 310, miniature air pump; 311, annular expansion airbag; 312, air guide tube; 313, one-way air valve;

[0040] The fixing components include: 41, double-layer groove; 42, gear rod; 43, ratchet; 44, telescopic rod; 45, limiting tooth; 46, reset torsion spring; 47, rack plate; 48, rectangular insulating plate; 49, stabilizing block. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0042] In the description of this invention, the terms “center,” “horizontal,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0043] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0044] Implementation, for example Figures 1 to 3 , Figure 8 , Figure 9 As shown, an embodiment of the present invention provides a high-sealing insulating joint, including a connector 11, a sleeve cylinder 12, insulating filler 13, and a U-shaped sealing ring 14. The sleeve cylinder 12 is sleeved on the outside of the connector 11, and the space between the connector 11 and the sleeve cylinder 12 is filled with insulating filler 13. The U-shaped sealing ring 14 is disposed inside the connector 11. The connector 11 is composed of two coaxially connected parts, a first connecting section and a second connecting section. The outer walls of both the connector 11 and the sleeve cylinder 12 are coated with a composite anti-corrosion coating. Each layer of the coating has an independent function and works synergistically, while ensuring that it does not affect the signal transmission, power supply and mechanical structure operation of the device. A sealing stabilizing component is disposed inside the connector 11.

[0045] The sealing and stabilizing assembly includes an insulating plate 21, which is disposed inside the connector 11. A limiting ring 22 is sleeved on the outer side of the insulating plate 21, and the insulating plate 21 is snapped into the inside of the connector 11 by the limiting ring 22. A U-shaped sealing ring 14 is sleeved on the outer side of the insulating plate 21. O-rings 23 are symmetrically arranged at the bottom of the insulating plate 21. Buffer plate groups 24 are arranged on the inner side of both sets of O-rings 23. Several first return springs 25 are arranged in a ring between the buffer plate groups 24. Both ends of each first return spring 25 are fixedly connected to the buffer plate group 24. Several vent holes 26 are symmetrically distributed in a ring around the insulating plate 21 inside the connector 11.

[0046] It should be noted that: the buffer plate group 24 consists of two annular plates, and the buffer plate on the side away from the insulating plate 21 is made of elastic material. Several first return springs 25 are set on the outside of the insulating plate 21 to balance the impact force on the O-ring seal 23. The O-ring seal 23 is set below the U-ring seal 14. The vent 26 is located below the buffer plate group 24 to release the pressure generated on the O-ring seal 23 inside the pipeline. A one-way valve is set at the end of the vent 26 away from the buffer plate group 24 to prevent leakage under negative pressure. A micro filter screen is installed at the inlet of the vent 26 to prevent impurities in the pipeline medium from clogging the channel when they enter the bottom of the buffer plate group 24.

[0047] like Figures 5 to 7 , Figure 10 , Figure 13 As shown, the cylinder 12 is equipped with a detection and sealing assembly, which includes a detection groove 31. The detection groove 31 is formed on the cylinder 12. Both the cylinder 12 and the connector 11 are provided with pressure holes 32. The pressure holes 32 are connected to the detection groove 31. A sealing plug 33 is provided at the end of the pressure hole 32 away from the detection groove 31. A one-way air valve 313 is provided inside the pressure hole 32, and a sealing ring is fitted on the outside of the one-way air valve 313, so that the sealing of the pressure hole 32 is guaranteed when the connector 11 and the cylinder 12 come into contact.

[0048] The detection and sealing assembly also includes a detection cylinder 34, which is positioned above the detection groove 31. A positioning ring 35 is fixedly connected to the inner wall of the detection cylinder 34. A piston rod 36 is slidably connected inside the positioning ring 35. A second return spring 37 is provided between the positioning ring 35 and the piston rod 36. The two ends of the second return spring 37 are fixedly connected to the positioning ring 35 and the piston rod 36, respectively. A conductive sheet 38 is fixedly connected to the top of the piston rod 36. A signal transmission sheet 39 is fixedly connected to the top of the detection cylinder 34.

[0049] The detection and sealing assembly also includes a miniature air pump 310, which is installed inside the sleeve cylinder 12. An annular expansion airbag 311 is provided in the detection groove 31. An air guide pipe 312 is provided at the air supply end of the miniature air pump 310. The end of the air guide pipe 312 away from the miniature air pump 310 is connected to the annular expansion airbag 311.

[0050] It should be noted that: during the machining of cylinder 12, a special mounting cavity is reserved inside the side wall, the size of which matches the micro air pump 310, to ensure that the micro air pump 310 is not loose after installation; the signal transmission piece 39 has an electrical connection with the micro air pump 310 and the telescopic rod 44, so that when the signal transmission piece 39 is energized, it will trigger the micro air pump 310 and the telescopic rod 44 to work. The micro air pump 310 is designed with an overload protection function. When the internal pressure of the annular expansion air bag 311 reaches the safety threshold, it will automatically stop inflation to prevent the air bag from being damaged by over-inflation.

[0051] like Figure 4 , Figure 11 , Figure 12 As shown, a fixing component is symmetrically arranged inside the connector 11. The fixing component includes a double-layer groove 41, which is opened inside the connector 11. A gear rod 42 is rotatably connected inside the double-layer groove 41. A ratchet 43 is fixedly connected to the bottom of the gear rod 42. A telescopic rod 44 is fixedly connected to the bottom of the double-layer groove 41. A limiting tooth 45 is rotatably connected to the top of the telescopic rod 44. A return torsion spring 46 is fixedly connected to the bottom of the limiting tooth 45. The end of the return torsion spring 46 away from the limiting tooth 45 is fixedly connected to the telescopic rod 44. A rack plate 47 is symmetrically fixedly connected to the inner wall of the sleeve cylinder 12.

[0052] The fixing assembly also includes a rectangular insulating plate 48, which is disposed between the connector 11 and the sleeve cylinder 12. Several stabilizing blocks 49 are symmetrically fixedly connected to the outer wall of the rectangular insulating plate 48.

[0053] It should be noted that: the rack plate 47 meshes with the gear rod 42, allowing the gear rod 42 to restrict the rotation of the rack plate 47; the rack plate 47 and the gear rod 42 are made of reinforced polyetheretherketone (PEEK) composite material to meet the insulation and high strength requirements of the insulating joint; both the connector 11 and the sleeve cylinder 12 have grooves identical to the stabilizing block 49, which is embedded between the connector 11 and the sleeve cylinder 12 to limit the connection stability between the connector 11 and the sleeve cylinder 12; the signal transmission piece 39 and the telescopic rod 44 are wirelessly linked via a micro Bluetooth module; the sleeve cylinder 12 integrates a Bluetooth transmitting module and an independent power supply battery, and the connector 11 integrates a matching Bluetooth receiving module and a battery, with the receiving module electrically connected to the telescopic rod 44; when the conductive piece 38 touches the signal transmission piece 39, the transmitting module sends a control command, which the receiving module receives and drives the telescopic rod 44 to retract, achieving wireless triggering; the Bluetooth module is encapsulated in an insulating shell, which does not damage the insulation and does not affect the detachable function of the connector 11 and the sleeve cylinder 12.

[0054] Based on the above embodiments, the following is the complete working process and working principle of the above embodiments:

[0055] Working principle: In the initial state, the first return spring 25 is not compressed, the second return spring 37 is stretched, and the limiting tooth 45 abuts against the ratchet 43.

[0056] Assembly work:

[0057] First, the rectangular insulating plate 48 and the stabilizing block 49 are fitted into the groove of the connector 11. Then, the sleeve cylinder 12 is sleeved on the outside of the connector 11. The movable sleeve cylinder 12 is assembled on the outer wall of the connector 11. The sleeve cylinder 12 will drive the internal rack plate 47 to move synchronously. The rack plate 47 meshes with the teeth of the gear rod 42, so that the rack plate 47 moves and drives the gear rod 42 to rotate through the teeth.

[0058] During the rotation of the gear rod 42, the ratchet 43 at the bottom will rotate synchronously. During the rotation of the ratchet 43, the limiting tooth 45 will continuously rotate around the telescopic rod 44. During the rotation of the limiting tooth 45, the reciprocating compression of the return torsion spring 46 will cause the limiting tooth 45 to always be in contact with the ratchet 43 under its own elasticity, thereby preventing the ratchet 43 and the gear rod 42 from rotating in opposite directions. This prevents the sleeve cylinder 12 and the rack plate 47 from moving away from the connector 11. After the connector 11 and the sleeve cylinder 12 are combined, the connector 11 and the sleeve cylinder 12 are both provided with the same groove as the stabilizing block 49. Under the restriction of the stabilizing block 49, the sleeve cylinder 12 is prevented from rotating around the connector 11, thereby making the outer wall of the sleeve cylinder 12 and the connector 11 firmly fixed, improving the connection firmness and sealing performance of the two.

[0059] Through the mechanical interlocking mechanism of gear rod 42, rack plate 47, and ratchet 43, the rigid connection and quick release of the sleeve cylinder 12 and the connector 11 are realized. This allows maintenance personnel to open the connector non-destructively and replace vulnerable parts such as the internal U-shaped sealing ring 14 and O-shaped sealing ring 23 without damaging the connector body or pipeline when maintenance is required. This design transforms the insulating connector from a "disposable" consumable into a "maintainable" device.

[0060] Adjustment steps:

[0061] At this time, insulating filler 13 needs to be filled between connector 11 and sleeve cylinder 12 to achieve sealing. Then, through the one-way air valve 313 installed at the end of pressure hole 32 away from detection groove 31, the gas inside pressure hole 32 and detection groove 31 is extracted, so that detection groove 31 is in a negative pressure state, so that piston rod 36 abuts against the bottom of detection cylinder 34 under negative pressure. At the same time, piston rod 36 stretches the second return spring 37 away from positioning ring 35, so that piston rod 36 enters detection state.

[0062] Stress compensation steps:

[0063] Traditional insulating joints rely on initial pre-tightening force for sealing. When pipeline pressure fluctuates, such as during water hammer or other pressure impacts, they are prone to failure due to instantaneous overpressure. In contrast, this device adopts a double-sealing structure with a U-shaped sealing ring 14 and an O-shaped sealing ring 23, which has the advantages of large sealing cross-section, low leakage risk, and strong pressure resistance.

[0064] Furthermore, during the operation of the insulating joint, the buffer plate group 24 and the O-ring seal 23 form a pressure sensing chamber, which is connected to the pressure inside the pipeline through the vent 26. At this time, the first return spring 25 between the buffer plate groups 24 provides the initial clamping force. When the pressure inside the pipeline increases, the pressure enters the bottom of the buffer plate group 24 through the vent 26. At the same time, this pressure will push the bottom buffer plate group 24 to rise, causing the buffer plate group 24 to compress the first return spring 25, thereby balancing the impact of the pressure inside the pipeline on the U-ring seal 14, the O-ring seal 23, and the insulating plate 21, thereby improving the sealing performance of the insulating joint.

[0065] Regarding the fixing of the insulating joint, the insulating plate 21 is connected to the connector 11 through a dedicated limiting ring 22. Compared with the floating installation that may loosen due to vibration, the insulating plate is rigidly fixed by applying a high-strength axial preload. This structure enables the entire assembly to withstand dynamic loads such as mechanical vibration, pressure pulsation and water hammer effect in the pipeline system, avoiding problems such as component loosening, displacement or sealing failure caused by long-term operation, thereby ensuring the long-term sealing stability and structural integrity of the joint.

[0066] The pressure compensation design of this structure dynamically adjusts the compression state of the buffer plate group 24 by sensing the internal pressure of the pipeline, which is equivalent to installing a "buffer" for the sealing system. It not only provides the initial sealing force, but also actively balances the pressure inside and outside the sealing cavity when the pipeline pressure rises, reducing the risk of damage to the sealing components due to pressure pulsation, and fundamentally improving the sealing reliability of the joint under complex working conditions.

[0067] Testing steps:

[0068] When a leak occurs inside the connector 11, the negative pressure inside the detection groove 31 is gradually released. At this time, without the restriction of negative pressure, the second reset spring 37 will elastically contract and pull the piston rod 36 to rise along the inside of the detection cylinder 34, so that the piston rod 36 gradually drives the top conductive plate 38 to contact the signal transmission plate 39. At this time, the staff will remotely receive the information that the insulating connector is leaking, and then use air pressure to achieve the purpose of automatic detection.

[0069] Temporary sealing procedure:

[0070] When a leak occurs at the sealing joint, because the signal transmission piece 39 is electrically connected to the micro air pump 310 and the telescopic rod 44, the signal transmission piece 39 will trigger the micro air pump 310 to be energized. After being energized, the micro air pump 310 will rapidly inject gas into the annular expansion airbag 311 through the air guide pipe 312, causing the annular expansion airbag 311 to expand rapidly and fill the interior of the detection groove 31, thus temporarily easing the leak.

[0071] At the same time, the signal transmission piece 39 will trigger the telescopic rod 44 to retract, causing the telescopic rod 44 to drive the top limiting tooth 45 and the reset torsion spring 46 to descend, so that the limiting tooth 45 stops contacting the ratchet 43. Then, the gear rod 42 can rotate, so that when the subsequent staff disassembles the outer sleeve cylinder 12 of the connector 11, the gear rod 42 will not restrict the movement of the inner rack plate 47 of the sleeve cylinder 12.

[0072] The negative pressure detection mechanism enables the spring to reset and ultimately connect the circuit to issue a remote alarm in the early stages of seal failure and when the leakage is minimal. This allows maintenance personnel to detect faults in a timely manner, schedule maintenance in a planned manner, and avoid economic losses and safety risks caused by leakage accidents and unplanned downtime.

[0073] By linking detection and execution, a closed-loop emergency response is formed. Once a leak is detected, the system will automatically initiate two tasks: first, drive the miniature air pump 310 to inflate the annular expansion airbag 311 to achieve initial temporary sealing, buying time for emergency repairs; second, automatically release the mechanical interlock to prepare for subsequent disassembly, shortening the maintenance window after emergency response. This integrated automated process of "detection, alarm, sealing, and preparation" adds an extra layer of safety to pipelines.

[0074] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included within the scope and spirit of the invention, and are included within the scope of the invention as described in the claims and its equivalents.

[0075] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should understand the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-sealing insulating joint, comprising a connector (11), a sleeve (12), insulating filler (13), and a U-shaped sealing ring (14), wherein the sleeve (12) is fitted onto the outside of the connector (11), the space between the connector (11) and the sleeve (12) is filled with insulating filler (13), and the U-shaped sealing ring (14) is disposed inside the connector (11), characterized in that, The connector (11) is provided with a sealing and stabilizing component inside; The sealing and stabilizing assembly includes an insulating plate (21), which is disposed inside the connector (11). A limiting ring (22) is sleeved on the outside of the insulating plate (21). The insulating plate (21) is snapped into the inside of the connector (11) by the limiting ring (22). A U-shaped sealing ring (14) is sleeved on the outside of the insulating plate (21). O-rings (23) are symmetrically arranged at the bottom of the insulating plate (21). Buffer plates (24) are arranged on the inner side of each of the two O-rings (23). Several first return springs (25) are arranged in a ring between the buffer plates (24). Both ends of each first return spring (25) are fixedly connected to the buffer plates (24). Several vent holes (26) are symmetrically arranged in a ring around the insulating plate (21) as the axis center inside the connector (11). The sleeve cylinder (12) is provided with a detection and sealing assembly, which includes a detection groove (31) on the sleeve cylinder (12). The sleeve cylinder (12) and the connector (11) are both provided with pressure holes (32). The pressure holes (32) are connected to the detection groove (31). A sealing plug (33) is provided at the end of the pressure hole (32) away from the detection groove (31). A one-way air valve (313) is provided inside the pressure hole (32). The detection and sealing assembly also includes a detection cylinder (34), which is positioned above the detection groove (31). A positioning ring (35) is fixedly connected to the inner wall of the detection cylinder (34). A piston rod (36) is slidably connected inside the positioning ring (35). A second reset spring (37) is provided between the positioning ring (35) and the piston rod (36). The two ends of the second reset spring (37) are fixedly connected to the positioning ring (35) and the piston rod (36) respectively. A conductive sheet (38) is fixedly connected to the top of the piston rod (36). A signal transmission sheet (39) is fixedly connected to the top of the detection cylinder (34). The connector (11) is symmetrically provided with a fixing component inside. The fixing component includes a double-layer groove (41). The double-layer groove (41) is opened inside the connector (11). A gear rod (42) is rotatably connected inside the double-layer groove (41). A ratchet (43) is fixedly connected to the bottom of the gear rod (42). A telescopic rod (44) is fixedly connected to the bottom of the double-layer groove (41). A limiting tooth (45) is rotatably connected to the top of the telescopic rod (44). A reset torsion spring (46) is fixedly connected to the bottom of the limiting tooth (45). The end of the reset torsion spring (46) away from the limiting tooth (45) is fixedly connected to the telescopic rod (44). A rack plate (47) is symmetrically fixedly connected to the inner wall of the sleeve cylinder (12).

2. The high-sealing insulating joint according to claim 1, characterized in that, The detection and sealing assembly also includes a micro air pump (310), which is installed inside the sleeve cylinder (12). An annular expansion airbag (311) is provided in the detection groove (31). An air guide pipe (312) is provided at the air delivery end of the micro air pump (310). The end of the air guide pipe (312) away from the micro air pump (310) is connected to the annular expansion airbag (311).

3. The high-sealing insulating joint according to claim 1, characterized in that, The fixing assembly also includes a rectangular insulating plate (48), which is disposed between the connector (11) and the sleeve cylinder (12). Several stabilizing blocks (49) are symmetrically fixedly connected to the outer wall of the rectangular insulating plate (48).

4. The high-sealing insulating joint according to claim 1, characterized in that, Several first reset springs (25) are disposed on the outside of the insulating plate (21), the O-ring seal (23) is disposed below the U-ring seal (14), and the vent (26) is located below the buffer plate group (24).

5. The high-sealing insulating joint according to claim 2, characterized in that, The signal transmission plate (39) is electrically connected to the micro air pump (310) and the telescopic rod (44).

6. The high-sealing insulating joint according to claim 1, characterized in that, The rack plate (47) meshes with the gear rod (42).

7. The high-sealing insulating joint according to claim 3, characterized in that, Both the connector (11) and the sleeve cylinder (12) have the same groove as the stabilizing block (49), and the stabilizing block (49) is embedded between the connector (11) and the sleeve cylinder (12).

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