Anti-overload self-separation shut-off coupling device

Abstract

The present application belongs to the technical field of dangerous liquid chemical material conveying system, and particularly relates to an overload-resistant self-separation closing connecting device. The present application comprises a mounting seat, a mounting cylinder is mounted on the mounting seat, a compression joint and a tension joint are arranged in the mounting cylinder; the compression joint comprises a compression housing and a compression counter joint, a compression thrust spring is arranged between the compression housing and the compression counter joint; the tension joint comprises a tension housing and a tension counter joint, a tension thrust spring is arranged between the tension housing and the tension counter joint; the compression counter joint and the tension counter joint are in butt joint; a compression locking push rod is arranged in the compression counter joint, a compression rubber sealing piece is connected to the compression locking push rod; a tension locking push rod is arranged in the tension counter joint, a tension rubber sealing piece is connected to the tension locking push rod. The present application provides a connecting device for automatically separating and closing the dangerous liquid chemical material conveying system under the action of tension, pressure, torsion and transverse force.

Description

Technical Field

[0001] This invention belongs to the technical field of hazardous liquid chemical material transportation systems, and specifically relates to an overload-resistant self-separating and shut-off connection device. Background Technology

[0002] Studies of various hazardous liquid chemical material leakage accidents show that a significant portion of these leaks are caused by torsional failure, tensile and compressive bending fractures, and shear ruptures in the pipelines and their connecting devices under various loads. Clearly, a large-scale leakage of hazardous liquid chemicals would have a severe negative impact on personnel health and safety, as well as environmental hygiene. Therefore, the overload resistance of hazardous liquid chemical material transportation systems is crucial for ensuring personnel health and safety and environmental hygiene. The key technology for achieving the overload resistance of hazardous liquid chemical material transportation systems is to install a self-closing and self-separating connection device between storage tanks, between storage tanks and pipelines, and between pipelines. When the transportation pipeline system experiences a sudden accident and is subjected to load, this connection device can automatically close and separate the pipelines at both ends under various stress and deformation conditions, thereby stopping the flow of hazardous liquid chemicals in the storage tanks and transportation pipelines, ensuring that no leakage of liquid chemicals occurs between the storage tanks, pipelines, or other components, and thus guaranteeing the safety of personnel and the environment.

[0003] The existing technology has the following drawbacks: 1) Existing technologies have a single load separation mode, which cannot guarantee the self-separation of pipeline connection devices under complex load conditions in multiple directions.

[0004] 2) Existing self-closing pipe structures require that the pipes at both ends must be separated under load before the rebound closing component can be triggered to close the pipe. However, in actual load conditions, there are many cases where the pipes cannot be completely separated, or even squeezed against each other, which makes it impossible to guarantee the normal closing of the self-closing component.

[0005] 3) Existing technologies rely on the destruction of weak components to achieve overload self-separation of connection devices. This requires regular maintenance and replacement of weak components, resulting in high equipment operating costs and reduced work efficiency. Summary of the Invention

[0006] In order to solve the above-mentioned problems in the prior art, the purpose of the present invention is to provide a connection device for automatic separation and closure of a hazardous liquid chemical material conveying system under the action of tensile force, pressure, torsion and lateral force.

[0007] The technical solution adopted in this invention is as follows: An overload-resistant self-separating and closing connection device includes a mounting base, on which a mounting cylinder is mounted. A clamping connector and a tensioning connector are disposed within the mounting cylinder. The clamping connector includes a clamping outer shell, within which a clamping mating connector is fitted. A clamping thrust spring is disposed between the clamping outer shell and the clamping mating connector. The tensioning connector includes a tensioning outer shell, within which a tensioning mating connector is fitted. A tensioning thrust spring is disposed between the tensioning outer shell and the tensioning mating connector. The clamping mating connector and the tensioning mating connector are mated together. The clamping connector is equipped with a clamping locking push rod, and a clamping locking spring is provided between the clamping locking push rod and the clamping connector. A clamping through hole is provided on the side of the clamping connector that is connected to the tensioning connector. A clamping rubber sealing plate for opening and closing the clamping through hole is connected to the clamping locking push rod. The tensioning connector is equipped with a tensioning locking push rod, and a tensioning locking spring is provided between the tensioning locking push rod and the tensioning connector. A tensioning through hole is provided on the side of the tensioning connector that is connected to the clamping connector. A tensioning rubber sealing plate for opening and closing the tensioning through hole is connected to the tensioning locking push rod.

[0008] This invention provides a self-separating and shut-off connection device for pipelines in hazardous liquid chemical material delivery systems that can achieve this under complex overload conditions (tension, pressure, torsion, and lateral forces, etc.). The device is safe and reliable, easy to disassemble and assemble, and does not require structural damage. The pipeline can be shut down and separated through reasonable structural movement within the connection device, ensuring that the delivery pipeline will not leak.

[0009] As a preferred embodiment of the present invention, the outer wall of the clamping connector is provided with a clamping baffle, the clamping housing is provided with a clamping groove, the clamping baffle extends out of the clamping groove, the mounting cylinder is provided with a spring pressure plate groove, the spring pressure plate groove includes an inclined section in the middle that is inclined relative to the mounting cylinder and straight sections on both sides of the inclined section that are parallel to the mounting cylinder, a spring pressure plate is sleeved inside the mounting cylinder, a guide boss is provided on the outer side of the spring pressure plate, the guide boss is sleeved in the spring pressure plate groove, a clamping locking block is provided on the inner side of the spring pressure plate, the clamping locking block overlaps with the clamping baffle, and a clamping spring is provided between the spring pressure plate and the mounting cylinder.

[0010] As a preferred embodiment of the present invention, the outer wall of the tensioning connector is provided with a tensioning baffle, the tensioning shell is provided with a guide groove, a top column with one side suspended is provided in the middle of the guide groove, the tensioning baffle extends out from the suspended side of the top column in the guide groove, the inner wall of the mounting cylinder is provided with a rotating top block and a stop block groove with openings on both sides, the tensioning baffle is sleeved in the stop block groove, and the plane of the rotating top block facing the stop block groove is inclined relative to the groove direction of the stop block groove; the mounting cylinder is provided with a spring push plate groove, a spring push plate is sleeved in the mounting cylinder, the outer side of the spring push plate is provided with a directional boss and a slider through groove at intervals, the directional boss is sleeved in the spring push plate groove, the slider through groove, the rotating top block and the stop block groove are collinear; the tensioning shell is provided with a rotating locking block, the rotating locking block is located between the end of the spring push plate and the mounting cylinder, and a tensioning spring is provided between the spring push plate and the mounting cylinder.

[0011] As a preferred embodiment of the present invention, a clamping end cap is connected to the clamping outer shell, and a clamping Z-shaped rigid connector is connected to the clamping end cap. A tensioning end cap is connected to the tensioning outer shell, and a tensioning Z-shaped rigid connector is connected to the tensioning end cap. The bending direction of the clamping Z-shaped rigid connector is perpendicular to the bending direction of the tensioning Z-shaped rigid connector.

[0012] As a preferred embodiment of the present invention, the outer wall of the mounting cylinder is provided with guide rail lugs, the mounting base is provided with guide rail grooves, and the guide rail lugs are sleeved in the guide rail grooves.

[0013] As a preferred embodiment of the present invention, the clamping and locking push rod is provided with a clamping guide ring, the clamping guide ring is provided with a clamping guide block, the clamping coupling is provided with a clamping push rod groove, and the clamping guide block is sleeved in the clamping push rod groove; the clamping coupling is also provided with a clamping annular groove, the clamping annular groove is provided with a clamping thrust spring, and the clamping locking spring is provided between the clamping guide ring and the clamping thrust spring.

[0014] As a preferred embodiment of the present invention, the compression joint is provided with a compression sealing strip retaining ring for retracting and compressing the rubber sealing strip, and the inner diameter of the compression sealing strip retaining ring is smaller than the diameter of the compression rubber sealing strip.

[0015] As a preferred embodiment of the present invention, the tensioning locking push rod is provided with a tensioning guide ring, the tensioning guide ring is provided with a tensioning guide block, the tensioning connector is provided with a tensioning push rod groove, and the tensioning guide block is sleeved in the tensioning push rod groove; the tensioning connector is also provided with a tensioning annular groove, the tensioning annular groove is provided with a tensioning thrust retaining spring, and the tensioning locking spring is provided between the tensioning guide ring and the tensioning thrust retaining spring.

[0016] As a preferred embodiment of the present invention, the tensioning connector is provided with a tensioning sealing strip retaining ring for retracting the tensioning rubber sealing strip, and the inner diameter of the tensioning sealing strip retaining ring is smaller than the diameter of the tensioning rubber sealing strip.

[0017] As a preferred embodiment of the present invention, a sealing ring is provided between the pressing connector and the pressing housing, a sealing ring is provided between the tensioning connector and the tensioning housing, and a sealing ring is provided between the pressing connector and the tensioning connector.

[0018] The beneficial effects of this invention are as follows: This invention provides a self-separating and shut-off connection device for pipelines in hazardous liquid chemical material delivery systems that can achieve this under complex overload conditions (tension, pressure, torsion, and lateral forces, etc.). The device is safe and reliable, easy to disassemble and assemble, and does not require structural damage. The pipeline can be shut down and separated through reasonable structural movement within the connection device, ensuring that the delivery pipeline will not leak. Attached Figure Description

[0019] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a perspective view of the present invention; Figure 3 It is an assembly drawing of the clamping shell, clamping connector and spring pressure plate; Figure 4 A schematic diagram of the structure of the clamping shell; Figure 5 This is a schematic diagram of the structure of the clamping joint; Figure 6 This is a cross-sectional view of the clamping joint; Figure 7 This is a schematic diagram of the structure of the locking push rod; Figure 8 This is a schematic diagram of the spring pressure plate. Figure 9 This is a structural diagram of the tensioning shell, tensioning connector, and spring push plate; Figure 10 This is a schematic diagram of the structure of the tensioned outer shell; Figure 11 This is a structural schematic diagram of the tensioning joint; Figure 12 This is a cross-sectional view of the tensioned butt joint; Figure 13 This is a schematic diagram of the tensioning and locking push rod. Figure 14 This is a schematic diagram of the spring push plate. Figure 15 It is a 3D view of the mounting cylinder; Figure 16 This is a sectional view of the mounting cylinder; Figure 17 It is a fluid flow path diagram.

[0020] In the diagram: 1-Pressure fitting; 2-Mounting base; 3-Mounting cylinder; 4-Tightening fitting; 11-Pressure housing; 12-Pressure mating fitting; 13-Pressure thrust spring; 14-Pressure locking push rod; 15-Pressure locking spring; 16-Spring pressure plate; 17-Pressure spring; 18-Pressure end cover; 21-Guide rail groove; 31-Spring pressure plate slide groove; 32-Rotating top block; 33-Stop block slot; 34-Spring push plate slide groove; 35-Guide rail lug; 36-Compression spring cover plate; 37-Thrust cover plate; 38-Through hole step; 41-Tightening housing; 42-Tightening coupling; 43-Tightening thrust spring; 44-Tightening locking push rod; 45-Tightening locking spring; 46-Spring push plate; 47-Push spring; 48-Tightening end cover; 111-Compression slide groove; 112-Compression step; 113-Limit end cover; 121-Compression through hole; 122- 123-Pressure clamping baffle; 124-Pressure clamping push rod groove; 125-Pressure clamping annular groove; 126-Pressure clamping thrust spring; 127-Pressure clamping sealing plate retaining ring; 141-Pressure clamping rubber sealing plate; 142-Pressure clamping guide ring; 143-Pressure clamping guide block; 161-Guide boss; 162-Pressure clamping locking block; 181-Pressure clamping Z-type rigid coupling; 371-Limiting boss; 411-Guide groove; 412-Top column; 413-Rotary lock Block; 414-Tightening step; 421-Tightening through hole; 422-Tightening baffle; 423-Tightening push rod groove; 424-Tightening annular groove; 425-Tightening thrust spring; 426-Tightening sealing plate retaining ring; 427-Mating groove; 441-Tightening rubber sealing plate; 442-Tightening guide ring; 443-Tightening guide block; 461-Orienting boss; 462-Slider through groove; 481-Tightening Z-type rigid butt joint. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the invention can be combined with each other.

[0023] like Figures 1-2 , Figure 17As shown, the overload-resistant self-separating and shut-off connection device of this embodiment includes a mounting base 2, on which a mounting cylinder 3 is mounted. A clamping connector 1 and a tensioning connector 4 are disposed within the mounting cylinder 3. The clamping connector 1 includes a clamping outer shell 11, within which a clamping mating connector 12 is fitted. A clamping thrust spring 13 is disposed between the clamping outer shell 11 and the clamping mating connector 12. The tensioning connector 4 includes a tensioning outer shell 41, within which a tensioning mating connector 42 is fitted. A tensioning thrust spring 43 is disposed between the tensioning outer shell 41 and the tensioning mating connector 42. A mating groove 427 is provided on the tensioning mating connector 42, and the clamping mating connector 12 is inserted into the mating groove 427.

[0024] A sealing ring is provided between the compression connector 12 and the compression housing 11, a sealing ring is provided between the tension connector 42 and the tension housing 41, and a sealing ring is provided between the compression connector 12 and the tension connector 42.

[0025] The clamping connector 12 is provided with a clamping locking push rod 14, and a clamping locking spring 15 is provided between the clamping locking push rod 14 and the clamping connector 12. The clamping connector 12 is provided with a clamping through hole 121 on one side of the clamping connector 12 that is connected to the tensioning connector 42. A clamping rubber sealing sheet 141 for opening and closing the clamping through hole 121 is connected to the clamping locking push rod 14. The tensioning connector 42 is provided with a tensioning locking push rod 44, and a tensioning locking spring 45 is provided between the tensioning locking push rod 44 and the tensioning connector 42. A tensioning through hole 421 is provided on one side of the tensioning connector 42 that is connected to the clamping connector 12. A tensioning rubber sealing sheet 441 for opening and closing the tensioning through hole 421 is connected to the tensioning locking push rod 44.

[0026] A clamping end cap 18 is connected to the clamping outer shell 11, and a clamping Z-shaped rigid connector 181 is connected to the clamping end cap 18. A tensioning end cap 48 is connected to the tensioning outer shell 41, and a tensioning Z-shaped rigid connector 481 is connected to the tensioning end cap 48. The bending direction of the clamping Z-shaped rigid connector 181 is perpendicular to the bending direction of the tensioning Z-shaped rigid connector 481.

[0027] The outer wall of the mounting cylinder 3 is provided with a guide rail lug 35, and the mounting base 2 is provided with a guide rail groove 21, with the guide rail lug 35 sleeved in the guide rail groove 21.

[0028] Specifically, such as Figures 3-8 , Figure 15 and Figure 16As shown, the outer wall of the clamping connector 12 is provided with a clamping baffle 122, the clamping housing 11 is provided with a clamping groove 111, the end of the clamping housing 11 near the tensioning connector 4 is connected to a limit end cap 113, the clamping baffle 122 extends out of the clamping groove 111, the mounting cylinder 3 is provided with a spring pressure plate groove 31, the spring pressure plate groove 31 includes an inclined section in the middle that is inclined relative to the mounting cylinder 3 and straight sections on both sides of the inclined section that are parallel to the mounting cylinder 3, the mounting cylinder 3 is fitted with a spring pressure plate 16, the outer side of the spring pressure plate 16 is provided with a guide boss 161, the guide boss 161 is fitted in the spring pressure plate groove 31, the inner side of the spring pressure plate 16 is provided with a clamping locking block 162, the clamping locking block 162 overlaps with the clamping baffle 122, one end of the mounting cylinder 3 is connected to a clamping spring cover plate 36 by bolts, and a clamping spring 17 is provided between the spring pressure plate 16 and the clamping spring cover plate 36.

[0029] like Figure 7 As shown, the clamping and locking push rod 14 is provided with a clamping guide ring 142, and a clamping guide block 143 is provided on the clamping guide ring 142. A clamping push rod slide groove 123 is provided inside the clamping coupling 12, and the clamping guide block 143 is sleeved in the clamping push rod slide groove 123. A clamping annular groove 124 is also provided inside the clamping annular groove 124, and a clamping thrust retaining spring 125 is provided inside the clamping annular groove 124. A clamping locking spring 15 is provided between the clamping guide ring 142 and the clamping thrust retaining spring 125. A clamping sealing sheet retaining ring 126 for retracting and clamping the rubber sealing sheet 141 is provided inside the clamping coupling 12. The inner diameter of the clamping sealing sheet retaining ring 126 is smaller than the diameter of the clamping rubber sealing sheet 141.

[0030] Specifically, such as Figures 9-14 , Figure 15 and Figure 16As shown, the outer wall of the tensioning connector 42 is provided with a push-tightening baffle 422, and the tensioning housing 41 is provided with a guide groove 411. A top post 412 with one side suspended is provided in the middle of the guide groove 411. The push-tightening baffle 422 extends out from the suspended side of the top post 412 in the guide groove 411. The inner wall of the mounting cylinder 3 is provided with a rotating top block 32 and a stop block groove 33 with openings on both sides. The push-tightening baffle 422 is sleeved in the stop block groove 33, and the plane of the rotating top block 32 facing the stop block groove 33 is inclined relative to the groove direction of the stop block groove 33. The mounting cylinder 3 is provided with a spring push plate groove 34, and a spring push plate 46 is sleeved in the mounting cylinder 3. The outer side of the spring push plate 46 is provided with a directional boss 461 and a slider groove 462 at intervals. The directional boss 461 is sleeved in the spring push plate groove 34. The slider groove 462, the rotating top block 32 and the stop block groove 33 are collinear. The tensioning shell 41 is provided with a rotating locking block 413. One end of the mounting cylinder 3 is connected to a thrust cover plate 37 by bolts. The inner side of the thrust cover plate 37 is provided with a limiting boss 371. The rotating locking block 413 is located between the spring push plate 46 and the limiting boss 371. The mounting cylinder 3 is provided with a through hole step 38. A push spring 47 is provided between the spring push plate 46 and the through hole step 38 of the mounting cylinder 3.

[0031] like Figure 13 As shown, the tensioning locking push rod 44 is provided with a tensioning guide ring 442, and a tensioning guide block 443 is provided on the tensioning guide ring 442. A tensioning push rod groove 423 is provided inside the tensioning coupling 42, and the tensioning guide block 443 is sleeved within the tensioning push rod groove 423. A tensioning annular groove 424 is also provided inside the tensioning coupling 422, and a tensioning thrust retaining spring 425 is provided within the tensioning annular groove 424. A tensioning locking spring 45 is located between the tensioning guide ring 442 and the tensioning thrust retaining spring 425. A tensioning sealing sheet retaining ring 426 for retracting the tensioning rubber sealing sheet 441 is provided inside the tensioning coupling 42, and the inner diameter of the tensioning sealing sheet retaining ring 426 is smaller than the diameter of the tensioning rubber sealing sheet 441.

[0032] Example: like Figures 3-8As shown, the inner side of the clamping housing 11 has a through-hole step 38, the upper side of the clamping housing 11 has an outward annular boss, four bolt holes are symmetrically opened on the annular boss, four clamping grooves 111 are symmetrically opened on the lower side, and four bolt holes are symmetrically opened at the bottom. The clamping housing 11 has a clamping step 112 inside, and the clamping step 112 is used to install the clamping thrust spring 13. The upper end of the clamping connector 12 has an annular boss, and a double-layer annular sealing ring is provided on the annular boss of the clamping connector 12. The lower outer wall of the clamping connector 12 has an annular sealing groove, and a sealing ring is provided between the clamping connector 12 and the tensioning connector 42. Four clamping baffles 122 are symmetrically arranged on the outer side of the clamping connector 12, the inner wall of the clamping connector 12 has symmetrically opened vertical clamping push rod grooves 123, the inner wall also has a clamping circumferential groove, and a clamping thrust spring 125 is provided at the lower inner end. After the sealing ring is installed on the upper annular boss of the clamping connector 12, it mates with the inner side of the clamping housing 11. The lower side of the upper annular boss of the clamping connector 12 is then fitted with the clamping thrust spring 13. The four clamping baffles 122 symmetrically arranged on the outer side of the clamping connector 12 mate with the four clamping grooves 111 on the lower side of the clamping housing 11. The clamping end cap 18 is then installed to the bottom of the clamping housing 11 using screws.

[0033] After the clamping locking push rod 14 and the clamping rubber sealing sheet 141 are installed, the clamping guide block 143 on the clamping guide ring 142 is fitted with the clamping push rod slide groove 123 on the inner wall of the clamping connector 12. A clamping locking spring 15 is installed on the upper end face of the clamping locking push rod 14. The clamping locking spring 15 is clamped in the clamping annular groove 124 on the inner wall of the clamping connector 12 by a clamping thrust retainer 125 on the upper side of the clamping locking spring 15, thus sealing the clamping locking spring 15 and the clamping locking push rod 14 in the through hole inside the clamping connector 12.

[0034] like Figures 9-14 As shown, the upper side of the clamping housing 11 is provided with an annular boss, and four bolt holes are symmetrically provided on the annular boss of the clamping housing 11. Four rotating locking blocks 413 are symmetrically provided on the lower side of the tensioning housing 41. Four pairs of guide rail grooves 411 are opened between the four rotating locking blocks 413. A top post 412 is provided between each pair of guide rail grooves. A tensioning step 414 is provided on the inner side of the tensioning housing 41.

[0035] The tensioning connector 42 has four symmetrically arranged push-stop plates 422 on its outer side, a mating groove 427 at its lower end, and an annular boss with a sealing groove at its upper end. The inner side of the tensioning connector 42 has two symmetrically arranged tensioning push rod grooves 423 from top to bottom, a tensioning annular groove 424 in the middle section, and a tensioning sealing plate retaining ring 426 at the lower section. After the sealing ring is installed in the sealing groove at the upper end of the tensioning connector 42, it mates with the through hole on the inner side of the tensioning housing 41. The push-stop plates 422 on the outer side of the tensioning connector 42 mate with the guide grooves 411 on the lower side of the tensioning housing 41. The tensioning rubber sealing plate 441 is installed on the tensioning locking push rod 44, and the tensioning guide block 443 on the tensioning guide ring 442 mates with the tensioning push rod groove 423 on the inner side of the tensioning connector 42. Then, a tension locking spring 45 is placed on the upper end face of the tension locking push rod 44, and the tension locking spring 45 and the tension locking push rod 44 are limited and constrained in the inner through hole of the tensioning connector 42 by the cooperation of the tension thrust snap ring 425 with the inner annular groove of the tensioning connector 42.

[0036] like Figure 15 and Figure 16As shown, the inner side of the mounting cylinder 3 is open, divided into a pressing section and a tensioning section on both sides, with a through-hole step 38 in the middle. The pressing section has two symmetrically arranged spring pressure plate grooves 31 on its inner side. The tensioning section has two symmetrically arranged spring push plate grooves 34 on its inner side, and four symmetrically arranged stop block grooves 33 on its upper side. Five mm below the stop block grooves 33, four symmetrically arranged rotating top blocks 32 are also provided. A push spring 47 is installed on the end face of the annular boss of the tensioning section of the mounting cylinder 3. The spring push plate grooves 34 in the tensioning section of the mounting cylinder 3 are fitted with the directional bosses 461 on the spring push plate 46, and the spring push plate 46 and the push spring 47 are in contact. The upper end faces of the four push baffles 422 on the tensioning connector 42 are in contact with the end faces of the top posts 412 between the four pairs of guide grooves 411 on the lower side of the tensioning housing 41. The rotating locking block 413 on the tensioning housing 41 and the limiting boss 371 on the thrust cover plate 37 are fitted together and installed. The lower end face of the tensioning housing 41 is installed in contact with the spring push plate 46. The tensioning connector 4 is pushed onto the thrust cover plate 37 on the mounting cylinder 3 by the thrust of the spring 47 and the spring push plate 46. The clamping connector 1 and the tensioning connector 4 are connected inside the mounting cylinder 3. Then, the spring pressure plate groove 31 inside the clamping section of the mounting cylinder 3 is fitted with the guide boss 161 on the spring pressure plate 16. Then, the outer side of the clamping baffle 122 on the clamping connector 12 in the clamping connector 1 overlaps and contacts the clamping locking block 162 on the spring pressure plate 16. Then, the compression spring 17 is placed outside the spring pressure plate 16, and the compression spring cover plate 36 is placed outside the compression spring 17 and fastened to the cylinder body of the mounting cylinder 3 with screws. This achieves the pressing of the compression joint 1 onto the annular boss surface of the pressing section of the mounting cylinder 3 by the thrust of the spring pressure plate 16 and the compression spring 17, thereby realizing the docking of the two joints.

[0037] Working principle: I. Installation Method This self-separating and shut-off connection device can be directly installed on the ground via mounting base 2, directly connecting the two ends to the conveying pipeline, or directly installed on the wall of the storage tank. Depending on the operating environment, a protective cover can be added to the outside of the connection device to prevent the clamping joint 1 and the tensioning joint 4 from being directly subjected to lateral loads and causing damage. If the connection device needs to be installed vertically, the tensioning section should be upward and the clamping section downward to avoid the adverse effects of the weight of the mounting cylinder 3 on the internal docking device.

[0038] II. Normal Work The fluid transport path of the connecting device during normal operation is as follows: Figure 16As indicated by the middle arrow. At this time, the pressing locking push rod 14 and the tension locking push rod 44 are pressed against each other, and the locking push rods at both ends begin to compress the locking springs at both ends, causing the locking push rods at both ends to move outward a certain distance. At the same time, the rubber sealing sheet on the locking push rod will open the conveying channel, and under the action of the sealing sheet retaining ring, it will contract and further expand the conveying channel. At this time, both joints in the connecting device are in the open state, and the conveying pipeline is open. If the pressing joint 1 and the tensioning joint 4 begin to separate, after separating to a certain distance, the pressing locking push rod 14 and the tension locking push rod 44 will no longer press against each other, and the pressing locking push rod 14 and the tension locking push rod 44 will close again due to the rebound of the locking spring, and the conveying pipeline will be closed.

[0039] III. Load Separation Mode Analysis of accident cases in conveying systems reveals that these pipelines primarily bear potential forces such as tension, pressure, torque, and lateral forces. Therefore, the overload self-separation and shut-off connection device of this invention, based on the specific stress patterns and deformations under various operating conditions, achieves self-closing and self-separation of the conveying pipeline through a designed structure that coordinates with movement, while avoiding damage to device components. Specific load separation modes include the following: 1. Tension separation mode When the compression section of the pipeline is subjected to tensile load, the tensile load will be directly transmitted to the compression housing 11, and then transmitted to the four compression baffles 122 on the outside of the compression connector 12 through the compression end cap 18 installed at the bottom of the compression housing 11. The compression baffles 122 and the compression locking blocks 162 on the spring pressure plate 16 overlap and contact each other. Thus, under the action of tension, the compression housing 11, the compression end cap 18, the compression connector 12 and the spring pressure plate 16 will move together in the direction of tension to overcome the compression force of the compression spring 17. The spring pressure plate 16 and the mounting cylinder 3 are fitted with a spring pressure plate groove 31 and a guide boss 161. Therefore, when moving in the direction of tension, the spring pressure plate 16 will rotate under the guidance of the spring pressure plate groove 31. After the spring pressure plate 16 rotates, the four clamping baffles 122 on the outside of the clamping connector 12 will no longer overlap and contact with the clamping locking block 162 on the spring pressure plate 16. At this time, the clamping connector 12 will move in the direction of tension under the action of the thrust spring. Due to the disengagement of the clamping connector 12, the clamping locking push rod 14 at the docking center will no longer support and contact the opposing tension locking push rod 44. The clamping locking push rod 14 and the clamping rubber sealing sheet 141 will move in the opposite direction of tension under the thrust of the clamping locking spring 15 to the constraint position of the clamping locking push rod. At this time, the clamping rubber sealing sheet 141 completes the closure of the clamping connector 1. At the same time, the tension locking push rod 44 and the tension rubber sealing sheet 441 in the center of the tension joint 4 will also reach the constraint position under the thrust of the tension locking spring 45 due to the loss of the support and constraint of the opposite push rod, thereby realizing the closure of the tension joint 4.

[0040] When the tension section pipeline is subjected to tensile load, the outer end face of the rotating locking block 413 on the tension housing 41 forms an overlapping contact constraint with the inner end face of the thrust cover plate 37 on the mounting cylinder 3 under the combined action of the spring push plate 46 and the push spring 47. As a result, the tensile load will be directly transmitted from the rotating locking block 413 on the tension housing 41 to the cylinder body of the mounting cylinder 3, causing the mounting cylinder 3 to move in the direction of tension. This will also cause the clamping housing 11, the limiting end cover 113, the clamping connector 12 and the spring pressure plate 16 in the clamping section to overcome the clamping force of the clamping spring 17 and move relative to the mounting cylinder 3, forcing the spring pressure plate 16 to rotate, thereby triggering the separation of the tension connector 4 and the clamping connector 1, and then triggering the locking device at the center of the two connectors.

[0041] When both ends are subjected to tensile loads simultaneously, it is a superposition of the two loading conditions mentioned above. The pressing shell 11, the limiting end cover 113, the pressing connector 12 and the spring pressure plate 16 in the accelerating pressing section together overcome the pressing force of the pressing spring 17 and the relative movement of the mounting cylinder 3. The separation method and principle are the same as the two loading conditions mentioned above.

[0042] 2. Pressure separation mode When the tensioning section of the pipeline is subjected to pressure load, the load will act directly on the tensioning housing 41. The rotating locking block 413 on the tensioning housing 41 will overcome the thrust of the tensioning spring 47 under pressure and push the spring push plate 46 to move in the pressure direction. The top post 412 on the tensioning housing 41 will push the tensioning connector to move in the pressure direction through the tensioning baffle 422, and then the tensioning baffle 422 will contact the inclined sliding surface of the rotating top block 32 inside the mounting cylinder 3. Under pressure, the tensioning baffle 422 will rotate along the inclined sliding surface of the rotating top block 32. When the tensioning baffle 422 rotates out of the action area of ​​the top post 412 on the tensioning housing 41, it will enter a guide groove 411 on the tensioning housing 41. At this time, the tensioning connector 42 will be pushed away from the docking area in the opposite direction of pressure under the action of the tensioning thrust spring 43. After the pressing connector 12 and the pushing connector are separated from each other, the locking push rods at the center of the two connectors will close the conveying pipes at both ends under the action of their respective locking springs.

[0043] When the compression section of the pipeline is subjected to pressure load, the load is transmitted from the compression housing 11 to the mounting cylinder 3, pushing the mounting cylinder 3 to move in the pressure direction. This causes the inclined sliding surface of the rotating top block 32 on the inner side of the mounting cylinder 3 to contact the push baffle 422 on the tensioning connector 42. Similarly, the push baffle 422 on the tensioning housing 41 rotates along the inclined sliding surface of the rotating top block 32. When the push baffle 422 rotates out of the action area of ​​the top column 412 on the tensioning housing 41, it enters a guide groove 411 on the tensioning housing 41. At this time, the tensioning connector 42 will be pushed away from the docking area in the opposite pressure direction under the action of the tensioning thrust spring 43. After the compression connector 12 and the tensioning connector 42 separate, the locking push rods at the center of the two connectors will close the conveying pipelines at both ends under the action of their respective locking springs.

[0044] When both ends are subjected to tensile loads simultaneously, it is a superposition of the two load conditions mentioned above. The tensioning shell 41, tensioning connector 42 and spring push plate 46 in the acceleration tensioning section together overcome the relative movement between the thrust spring and the mounting cylinder 3. The separation method and principle are the same as the two load conditions mentioned above.

[0045] 3. Torsional Separation Mode When the compression section of the pipeline is subjected to a torsional load, the load is transmitted from the compression housing 11 through the sliding groove to the compression baffle 122 of the compression connector 12. This causes the compression housing 11 and the compression connector 12 to rotate relative to the cylinder body of the mounting cylinder 3 and the spring pressure plate 16. As a result, the four compression baffles 122 on the outside of the compression connector 12 will no longer overlap and contact the locking blocks on the spring pressure plate 16. At this time, the compression connector 12 will separate from the tension connector 42 under the action of the compression thrust spring 13. Due to the disengagement of the compression connector 12, the compression locking push rod 14 at the docking center will no longer support and contact the opposing tension locking push rod 44. The compression locking push rod 14 and the compression rubber sealing plate 141 will move to the constraint position of the compression locking push rod in the opposite direction of the tension under the thrust of the compression locking spring 15. At this time, the compression rubber sealing plate 141 completes the closure of the compression connector 1. At the same time, the tension locking push rod 44 and the tension rubber sealing sheet 441 in the center of the tension joint 4 will also reach the constraint position under the thrust of the tension locking spring 45 due to the loss of the support and constraint of the opposite push rod, thereby realizing the closure of the tension joint 4.

[0046] When the tensioning section of the pipeline is subjected to a torsional load, the load will cause the tensioning housing 41 to rotate, while the mounting cylinder 3 will not rotate under the constraint of the mounting seat 2. Furthermore, the push-fit baffle 422 on the outside of the tensioning connector 42 will not rotate because it is locked in the baffle slot of the tensioning connector 42 on the inner side of the mounting cylinder 3. Thus, the tensioning housing 41 and the tensioning connector 42 will rotate relative to each other. When the top post 412 on the tensioning housing 41 rotates out of the area of ​​the push-fit baffle 422 of the tensioning connector 42, the push-fit baffle 422 will enter a guide groove 411 on the tensioning housing 41. At this time, the tensioning connector 42 will be pushed away from the docking area in the opposite direction of pressure under the action of the tensioning thrust spring 43. After the clamping connector 12 and the tensioning connector 42 separate, the locking push rods at the center of the two connectors will close the conveying pipelines at both ends under the action of their respective locking springs.

[0047] When both ends are subjected to torsional loads simultaneously, the separation and sealing principle of the connecting device is the same as the separation and sealing principle when both ends are subjected to torsional loads separately.

[0048] 4. Lateral force separation mode The connecting device is installed and fixed in the protective cover. When the Z-type rigid connector 181 and the Z-type rigid connector 481 are subjected to lateral load, due to the presence of the Z-type rigid connector, the lateral load has an eccentric lever arm relative to the central axis of the connecting device, which will generate a rotational torque, thereby causing the tension connector 4 and the clamping connector 1 to rotate relative to the mounting cylinder 3, thereby triggering the rotational separation and sealing of the internal device of the connecting device.

[0049] This invention provides a self-separating and shut-off connection device for pipelines in hazardous liquid chemical material delivery systems that can achieve this under complex overload conditions (tension, pressure, torsion, and lateral forces, etc.). The device is safe and reliable, easy to disassemble and assemble, and does not require structural damage. The pipeline can be shut down and separated through reasonable structural movement within the connection device, ensuring that the delivery pipeline will not leak.

[0050] This invention is not limited to the above-described optional embodiments. Anyone can derive other various forms of products under the guidance of this invention. However, regardless of any changes made in their shape or structure, any technical solution that falls within the scope of the claims of this invention shall be protected by this invention.

Claims

1. An overload-resistant self-separating and shut-off connection device, characterized in that: The device includes a mounting base (2), on which a mounting cylinder (3) is mounted. A clamping connector (1) and a tensioning connector (4) are provided inside the mounting cylinder (3). The clamping connector (1) includes a clamping shell (11), and a clamping mating connector (12) is fitted inside the clamping shell (11). A clamping thrust spring (13) is provided between the clamping shell (11) and the clamping mating connector (12). The tensioning connector (4) includes a tensioning shell (41), and a tensioning mating connector (42) is fitted inside the tensioning shell (41). A tensioning thrust spring (43) is provided between the tensioning shell (41) and the tensioning mating connector (42). The clamping mating connector (12) and the tensioning mating connector (42) are connected. The clamping connector (12) is provided with a clamping locking push rod (14), and a clamping locking spring (15) is provided between the clamping locking push rod (14) and the clamping connector (12). The clamping connector (12) is provided with a clamping through hole (121) on one side of the clamping connector (42) and a clamping rubber sealing sheet (141) for opening and closing the clamping through hole (121) is connected to the clamping locking push rod (14). The tensioning connector (42) is provided with a tensioning locking push rod (44), and a tensioning locking spring (45) is provided between the tensioning locking push rod (44) and the tensioning connector (42). The tensioning connector (42) is provided with a tensioning through hole (421) on one side of the tensioning connector (12) and a tensioning rubber sealing sheet (441) for opening and closing the tensioning through hole (421) is connected to the tensioning locking push rod (44). The outer wall of the tensioning connector (42) is provided with a push-tightening baffle (422), and the tensioning shell (41) is provided with a guide groove (411). A top column (412) with one side suspended is provided in the middle of the guide groove (411). The push-tightening baffle (422) extends out from the suspended side of the top column (412) in the guide groove (411). The inner wall of the mounting cylinder (3) is provided with a rotating top block (32) and a stop block groove (33) with openings on both sides. The push-tightening baffle (422) is fitted into the stop block groove (33). The plane of the rotating top block (32) facing the stop block groove (33) is inclined relative to the groove of the stop block groove (33). The mounting cylinder (3) The spring push plate groove (34) is provided inside the mounting cylinder (3), and the spring push plate (46) is sleeved inside the mounting cylinder (3). The outer side of the spring push plate (46) is provided with a directional boss (461) and a slider through groove (462) at intervals. The directional boss (461) is sleeved inside the spring push plate groove (34). The slider through groove (462), the rotating top block (32) and the stop block slot (33) are collinear. The tensioning shell (41) is provided with a rotating locking block (413). The rotating locking block (413) is located between the ends of the spring push plate (46) and the mounting cylinder (3). A tensioning spring (47) is provided between the spring push plate (46) and the mounting cylinder (3).

2. The overload-resistant self-separating and shut-off connection device according to claim 1, characterized in that: The outer wall of the clamping connector (12) is provided with a clamping baffle (122), the clamping shell (11) is provided with a clamping groove (111), the clamping baffle (122) extends out of the clamping groove (111), the mounting cylinder (3) is provided with a spring pressure plate groove (31), the spring pressure plate groove (31) includes an inclined section in the middle that is inclined relative to the mounting cylinder (3) and straight sections on both sides of the inclined section that are parallel to the mounting cylinder (3), the mounting cylinder (3) is fitted with a spring pressure plate (16), the outer side of the spring pressure plate (16) is provided with a guide boss (161), the guide boss (161) is fitted in the spring pressure plate groove (31), the inner side of the spring pressure plate (16) is provided with a clamping locking block (162), the clamping locking block (162) overlaps with the clamping baffle (122), and a clamping spring (17) is provided between the spring pressure plate (16) and the mounting cylinder (3).

3. The overload-resistant self-separating and shut-off connection device according to claim 1, characterized in that: The clamping shell (11) is connected to a clamping end cap (18), and the clamping end cap (18) is connected to a clamping Z-type rigid connector (181). The tensioning shell (41) is connected to a tensioning end cap (48), and the tensioning end cap (48) is connected to a tensioning Z-type rigid connector (481). The bending direction of the clamping Z-type rigid connector (181) is perpendicular to the bending direction of the tensioning Z-type rigid connector (481).

4. The overload-resistant self-separating and shut-off connection device according to claim 1, characterized in that: The outer wall of the mounting cylinder (3) is provided with a guide rail lug (35), and the mounting base (2) is provided with a guide rail groove (21), and the guide rail lug (35) is sleeved in the guide rail groove (21).

5. The overload-resistant self-separating and shut-off connection device according to claim 1, characterized in that: The clamping locking push rod (14) is provided with a clamping guide ring (142), and a clamping guide block (143) is provided on the clamping guide ring (142). The clamping coupling (12) is provided with a clamping push rod groove (123), and the clamping guide block (143) is sleeved in the clamping push rod groove (123). The clamping coupling (12) is also provided with a clamping annular groove (124), and a clamping thrust retaining spring (125) is provided in the clamping annular groove (124). The clamping locking spring (15) is located between the clamping guide ring (142) and the clamping thrust retaining spring (125).

6. The overload-resistant self-separating and shut-off connection device according to claim 1, characterized in that: The compression joint (12) is provided with a compression sealing strip retaining ring (126) for gathering and compressing the rubber sealing strip (141). The inner diameter of the compression sealing strip retaining ring (126) is smaller than the diameter of the compression rubber sealing strip (141).

7. The overload-resistant self-separating and shut-off connection device according to claim 1, characterized in that: The tensioning locking push rod (44) is provided with a tensioning guide ring (442), and a tensioning guide block (443) is provided on the tensioning guide ring (442). The tensioning connector (42) is provided with a tensioning push rod groove (423), and the tensioning guide block (443) is sleeved in the tensioning push rod groove (423). The tensioning connector (42) is also provided with a tensioning annular groove (424), and a tensioning thrust retainer (425) is provided in the tensioning annular groove (424). The tensioning locking spring (45) is located between the tensioning guide ring (442) and the tensioning thrust retainer (425).

8. The overload-resistant self-separating and shut-off connection device according to claim 1, characterized in that: The tensioning connector (42) is provided with a tensioning sealing strip retainer (426) for tightening the tensioning rubber sealing strip (441), and the inner diameter of the tensioning sealing strip retainer (426) is smaller than the diameter of the tensioning rubber sealing strip (441).

9. An overload-resistant self-separating and shut-off connection device according to any one of claims 1 to 8, characterized in that: A sealing ring is provided between the compression connector (12) and the compression housing (11), a sealing ring is provided between the tension connector (42) and the tension housing (41), and a sealing ring is provided between the compression connector (12) and the tension connector (42).

Images