A leak-proof high-pressure oil pipe connector

Abstract

The present invention discloses a leak-proof high-pressure oil pipe connector, comprising: a connecting sleeve, in which a flow hole is provided, in which an insertion cavity is provided, in which a resistance bend and an embedded portion facing the resistance bend are provided; and an oil pipe connector, on which a deformation ring is provided. The leak-proof high-pressure oil pipe connector provided by the invention, when the oil pipe connector is installed onto the connecting sleeve by threading, the deformation ring extends into the insertion cavity of the connecting sleeve, deforms and expands, and the end is folded to form a blockage, at which time the deformation ring separates the flow hole of the connecting sleeve from the threaded connection between the connecting sleeve and the oil pipe connector, thereby preventing the oil in the flow hole from directly applying pressure to the threaded connection between the connecting sleeve and the oil pipe connector, thereby preventing oil leakage from the threaded connection between the connecting sleeve and the oil pipe connector.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure oil pipes, and in particular to a leak-proof high-pressure oil pipe connector. Background Art

[0002] High-pressure oil pipes are part of the high-pressure oil circuit. They are required to withstand a certain oil pressure and have a certain fatigue strength to ensure the sealing requirements of the pipeline. Automotive high-pressure oil pipes mainly appear in high-pressure injection diesel engines and high-pressure injection direct injection gasoline engines. They can withstand the oil pressure required during engine operation. Connectors are often used to connect the oil circuit in high-pressure oil pipes.

[0003] Publication number CN206874991U, published (announced) on January 12, 2018, discloses a high-pressure oil pipe joint and a high-pressure oil pipe assembly. The high-pressure oil pipe joint includes a sleeve and a high-pressure oil pipe. The sleeve includes a sleeve body having a through hole formed therein, the through hole being shaped to match and closely fit the outer circumference of the oil pipe. The high-pressure oil pipe includes a pipe body including an insert portion and an exposed portion connected to the insert portion. When the sleeve is installed in place on the oil pipe, it fits over the outer surface of the oil pipe. When the high-pressure oil pipe is installed in place on the oil pipe, the insert portion is inserted into the oil pipe and expands the pipe wall. The inner and outer circumferences of the pipe wall are squeezed by the insert portion and the sleeve, respectively, and locked together. This utility model achieves the effect of connecting a high-pressure oil pipe joint to the oil pipe with a simple process.

[0004] In the prior art including the above-mentioned patents, the oil pipe is connected and fixed to the sleeve through threads. However, since the oil circuit vibrates during operation, the threaded connection between the oil pipe and the sleeve is easily loosened due to vibration, resulting in oil leakage. Summary of the Invention

[0005] The purpose of the present invention is to provide a leak-proof high-pressure oil pipe connector, which is used to solve the problem of oil leakage at the threaded connection between the oil pipe and the sleeve.

[0006] In order to achieve the above object, the present invention provides the following technical solution: a leak-proof high-pressure oil pipe connector, comprising:

[0007] A connecting sleeve having a flow hole formed therein, an insertion cavity formed therein, and an interference bend and an embedded portion facing the interference bend provided in the insertion cavity;

[0008] An oil pipe connector, on which a deformation ring is provided;

[0009] Among them, the oil pipe connector is threadedly installed in the connecting sleeve so that the deformed ring expands and extends into the cavity and the end contacts and resists and then bends and folds. The embedded part is embedded in the folded end of the deformed ring, and the deformed ring separates the threaded connection between the oil pipe connector and the connecting sleeve and the flow hole.

[0010] Preferably, a sealing assembly is further included, which includes a plurality of arc-shaped members sliding relative to the axis of the flow hole, and the plurality of arc-shaped members are driven to slide together so that the interference portions provided thereon are spliced ​​to form a sealing ring clamped around the outside of the deformable ring.

[0011] Preferably, a clamping assembly is further included, which includes a clamping piece driven to slide close to and clamp the end of the deformable ring, the clamping piece is in the shape of a partial frustum shell, and the lower bottom side of the clamping piece faces the deformable ring.

[0012] Preferably, a communication cavity connected to the flow hole is provided in the connecting sleeve, and the first movable portion of the arc-shaped member is located in the communication cavity to maintain piston movement to drive the arc-shaped member to slide.

[0013] Preferably, a reset assembly is further included, which includes a first airbag component and a second airbag component arranged in the connecting sleeve to drive the arc-shaped component to slide back to the axis of the flow hole. The first airbag component is connected to the third airbag component arranged in the connecting sleeve. The first airbag component is pressurized to cause the third airbag component to expand and push the clamping component to slide.

[0014] Preferably, a buffer cavity is provided in the connecting sleeve, the buffer cavity is separated from the flow hole by an interference portion, the buffer cavity is separated from the communicating cavity by a first movable portion, and the first airbag component and the second airbag component are both located in the buffer cavity.

[0015] Preferably, a hook-shaped portion is provided on one side of the upper bottom of the pressing member, and the pressing member is reset away from the deforming ring so that the hook-shaped portion pushes the end of the deforming ring to be folded away from the embedded portion.

[0016] Preferably, an extension portion extending onto the sliding path of the arc-shaped member is provided on one side of the upper bottom of the pressing member.

[0017] Preferably, an annular groove facing the abutting portion is provided in the insertion cavity.

[0018] Preferably, the inner wall of the deformation ring is provided with a wrapping ring which is annular and used to wrap the sharp corner of the opening of the cavity.

[0019] In the above technical solution, the present invention provides a leak-proof high-pressure oil pipe connector, which has the following beneficial effects: when the oil pipe connector is installed on the connecting sleeve through threads, the deformation ring extends into the insertion cavity of the connecting sleeve, deforms and expands, and the end is folded to form a blockage. At this time, the deformation ring separates the flow hole of the connecting sleeve and the threaded connection between the connecting sleeve and the oil pipe connector, thereby preventing the oil in the flow hole from directly applying pressure to the threaded connection between the connecting sleeve and the oil pipe connector, thereby avoiding oil leakage at the threaded connection between the connecting sleeve and the oil pipe connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0021] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the overall explosion structure provided by an embodiment of the present invention;

[0023] Figure 3 A schematic cross-sectional view of the overall structure provided by an embodiment of the present invention;

[0024] Figure 4 A schematic cross-sectional view of the structure of a connecting sleeve provided in an embodiment of the present invention;

[0025] Figure 5 A schematic diagram of the exploded structure of an arc-shaped member provided in an embodiment of the present invention;

[0026] Figure 6 A schematic structural diagram of a pressing member provided in an embodiment of the present invention;

[0027] Figure 7 A partial enlarged schematic diagram of point A provided in an embodiment of the present invention;

[0028] Figure 8 A partial enlarged schematic diagram of point B provided in an embodiment of the present invention;

[0029] Figure 9 This is a partial enlarged schematic diagram of point C provided in an embodiment of the present invention.

[0030] Description of reference numerals:

[0031] 1. Connecting sleeve; 11. Connecting end; 111. Flow hole; 12. Mounting end; 13. Inserting cavity; 131. Interference bend; 132. Embedded portion; 133. Annular groove; 14. Connecting cavity; 15. Buffer cavity; 16. Active cavity; 17. Sliding groove; 18. Drive cavity; 2. Oil pipe connector; 21. Deformation ring; 22. Wrapping ring; 3. Arc-shaped member; 31. First active portion; 32. Fitting portion; 33. Fitting groove; 34. Interference portion; 4. Pressing member; 41. Hook-shaped portion; 42. Extension portion; 43. Second active portion; 431. Contact portion; 51. First airbag member; 52. Second airbag member; 53. Third airbag member. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0033] like Figure 1-9 As shown, a leak-proof high-pressure oil pipe connector includes:

[0034] The connecting sleeve 1 has a flow hole 111 formed therein, an insertion cavity 13 formed therein, and an interference bend 131 and an embedded portion 132 facing the interference bend 131 provided in the insertion cavity 13;

[0035] The oil pipe connector 2 is provided with a deformation ring 21;

[0036] Among them, the oil pipe connector 2 is threadedly installed in the connecting sleeve 1 so that the deforming ring 21 deforms and expands into the insertion cavity 13 and the end contacts the resistance bend 131 and then folds over. The embedded part 132 is embedded in the folded end of the deforming ring 21, and the deforming ring 21 separates the threaded connection between the oil pipe connector 2 and the connecting sleeve 1 and the flow hole 111.

[0037] Specifically, such as Figure 2As shown, a through-flow hole 111 is provided on the connecting sleeve 1, and a connecting end 11 and a mounting end 12 are respectively provided at both ends of the connecting sleeve 1. The mounting end 12 is used to connect to the oil circuit equipment, and the inner wall of the connecting end 11 is provided with a thread, and the outer wall of the oil pipe connector 2 close to the end of the deforming ring 21 is provided with a thread. The oil pipe connector 2 can be connected to the connecting end 11 of the connecting sleeve 1 through the thread. At this time, as the oil pipe connector 2 enters the interior of the connecting end 11, the deforming ring 21 gradually extends into the interior of the connecting end 11, and the end of the deforming ring 21 gradually enters the insertion cavity 13 and deforms and expands into a trumpet shape along the inner wall of the insertion cavity 13. When the end of the deforming ring 21 When the oil pipe connector 2 enters the insertion cavity 13 and contacts the inside of the interference bend 131, as the oil pipe connector 2 continues to be screwed in, the end of the deformable ring 21 will be reversely folded along the interference bend 131, thereby causing the embedded portion 132 to be embedded in the folded portion of the end of the deformable ring 21, thereby causing the deformable ring 21 to be sealed between the interference bend 131 and the embedded portion 132 of the insertion cavity 13. The end of the deformable ring 21 is folded in the insertion cavity 13, which can increase the connection stability between the oil pipe connector 2 and the connecting sleeve 1, thereby increasing the explosion-proof performance between the connecting sleeve 1 and the oil pipe connector 2. In addition, the reverse folding of the end of the deformable ring 21 can also increase the sealing stability of the deformable ring 21 in the insertion cavity 13.

[0038] When the deforming ring 21 is located in the insertion cavity 13 for sealing, the threaded connection between the connecting end 11 and the oil pipe connector 2 is located on the outside of the deforming ring 21, and the flow hole 111 is located on the inside of the deforming ring 21, so that the deforming ring 21 separates the threaded connection from the flow hole 111, thereby preventing the oil in the flow hole 111 from directly applying pressure to the threaded connection between the connecting sleeve 1 and the oil pipe connector 2, thereby avoiding oil leakage at the threaded connection between the connecting sleeve 1 and the oil pipe connector 2. Secondly, since the end of the deforming ring 21 is folded and sealed in the insertion cavity 13, and the oil pipe connector 2 contacts the connecting sleeve 1 through the deforming ring 21 to transmit vibration, the thread damage caused by the vibration transmitted between the oil pipe connector 2 and the connecting sleeve 1 through the threaded connection between the two can be reduced, further avoiding the problem of oil leakage at the threaded connection.

[0039] Furthermore, the outer diameter of the end of the deforming ring 21 can be made consistent with the outer diameter of the thread on the oil pipe connector 2 before expansion deformation occurs. When the oil pipe connector 2 is installed on the connecting end 11 of the connecting sleeve 1 through threads, the end of the deforming ring 21 can rotate and scrape against the threads on the inner wall of the connecting end 11, thereby scraping and removing dust, debris or rust spots stuck in the threads, thereby increasing the stability of the threaded connection between the connecting sleeve 1 and the oil pipe connector 2.

[0040] In the above technical solution, when the oil pipe connector 2 is threadedly installed on the connecting sleeve 1, the deforming ring 21 extends into the insertion cavity 13 of the connecting sleeve 1, deforms and expands, and the end is folded over to form a blockage. At this time, the deforming ring 21 separates the flow hole 111 of the connecting sleeve 1 from the threaded connection between the connecting sleeve 1 and the oil pipe connector 2, thereby preventing the oil in the flow hole 111 from directly applying pressure to the threaded connection between the connecting sleeve 1 and the oil pipe connector 2, thereby avoiding oil leakage at the threaded connection between the connecting sleeve 1 and the oil pipe connector 2.

[0041] Another embodiment provided by the present invention also includes a sealing assembly, which includes a plurality of arc-shaped members 3 that slide relative to the axis of the flow hole 111. The plurality of arc-shaped members 3 are driven to slide together so that the resistance portions 34 provided on the arc-shaped members 3 are spliced ​​to form a sealing ring that is clamped tightly around the outside of the deformation ring 21.

[0042] Specifically, such as Figure 5 As shown, a partially arc-shaped resistance portion 34 is provided on the arc-shaped member 3, and several arc-shaped members 3 can be driven to slide close to the axis of the flow hole 111 so that several resistance portions 34 are spliced ​​together to form a sealing ring, and the resistance portions 34 form a sealing ring and are clamped on the outer peripheral side of the deformation ring 21. The resistance portions 34 form a sealing ring. First, the tightening of the sealing ring can increase the sealing stability between the deformation ring 21 and the insertion cavity 13. Second, multiple arc-shaped members 3 are located on the outer ring side of the deformation ring 21 to form a ring hoop seal, thereby avoiding the problem of oil leakage caused by flowing along the inner ring surface and the outer ring surface of the arc-shaped member 3 and flowing to the threaded connection, further increasing the sealing and leak-proof performance between the connecting sleeve 1 and the oil pipe connector 2.

[0043] like Figure 5 As shown, the interference portions 34 are all in the shape of a quarter of a circle, and a fitting portion 32 is provided at one end of the interference portion 34, and a fitting groove 33 is provided at the other end, and the groove width of the fitting groove 33 is larger than the fitting portion 32, so that when the plurality of arc-shaped members 3 are driven to slide close relative to the axis of the flow hole 111, the fitting portions 32 of the interference portions 34 are all fitted into the fitting groove 33 of another interference portion 34, and the interference portions 34 between the plurality of arc-shaped members 3 are pressed against each other to form a sealing ring, thereby further increasing the clamping stability of the sealing ring formed by the splicing of the plurality of interference portions 34 on the deformation ring 21. The specific arc length of the interference portion 34 is inversely proportional to the number of arc-shaped members 3. If there are eight groups of arc-shaped members 3, the specific arc length of the interference portion 34 is one-eighth of a circle. This is common technical knowledge of those skilled in the art and will not be elaborated here.

[0044] Among them, the arc-shaped member 3 can be replaced by manually rotating a bolt to push the arc-shaped member 3 to slide, or by an electric push rod or a pneumatic push rod to drive the arc-shaped member 3 to slide, or by other driving methods known to those skilled in the art that can drive the arc-shaped member 3 to slide relative to the axis of the flow hole 111.

[0045] As another embodiment provided by the present invention, it also includes a clamping assembly, which includes a clamping member 4 driven to slide close to and clamp relative to the end of the deformable ring 21, and the clamping member 4 is in a partial frustum shell shape, and the lower bottom side of the clamping member 4 faces the deformable ring 21.

[0046] Specifically, the pressing assembly includes a pressing member 4, such as Figure 6 As shown, the pressing member 4 is in the shape of a partial truncated cone shell, with the left end being the lower bottom side and the right end being the upper bottom side. Figure 7 As shown, the pressing member 4 is slidably arranged in the movable cavity 16 opened in the connecting sleeve 1, so that the lower bottom side of the pressing member 4 faces the deforming ring 21. When the connecting sleeve 1 and the oil pipe connector 2 are connected and the oil circuit is formed, the deforming ring 21 enters the insertion cavity 13 and completes the end folding. At this time, the pressing member 4 is driven to slide relative to the deforming ring 21 and slides close to and presses on the end of the deforming ring 21, thereby pressing the folded end of the deforming ring 21 so that the end edge has a sharp tip. The pressing of the pressing member 4 on the end of the deforming ring 21 can further increase the sealing performance of the deforming ring 21 in the insertion cavity 13, thereby avoiding the occurrence of oil leakage.

[0047] Secondly, the edge of the end of the deforming ring 21 after being folded is compressed and deformed to have a sharp point, so that when the connecting sleeve 1 and the oil pipe connector 2 are disassembled and separated, the end of the deforming ring 21 can be disassembled from the insertion cavity 13, thereby increasing the convenience of disassembly between the connecting sleeve 1 and the oil pipe connector 2, and when the oil pipe connector 2 is unscrewed from the inner thread of the connecting sleeve 1, the sharp point pressed out by the pressing part 4 at the end of the deforming ring 21 can also follow the rotation of the oil pipe connector 2 and scratch the thread in the connecting sleeve 1, thereby scraping off dust, debris or rust in the thread of the connecting sleeve 1. Moreover, the end of the deforming ring 21 still has a sharp point after it is disassembled from the installed state, thereby facilitating the deforming ring 21 to re-enter the insertion cavity 13 and facilitate the re-connection and installation of the oil pipe connector 2 and the connecting sleeve 1, thereby increasing the service life of the oil pipe connector 2 and the connecting sleeve 1.

[0048] Among them, the clamping member 4 can be replaced by a manually rotating bolt to push the clamping member 4 to slide, or by an electric push rod or a pneumatic push rod to drive the clamping member 4 to slide, or by other driving methods known to those skilled in the art that can drive the clamping member 4 to slide relative to the folded end of the deforming ring 21.

[0049] As another embodiment provided by the present invention, a connecting cavity 14 communicating with the flow hole 111 is defined in the connecting sleeve 1 , and the first movable portion 31 of the arc-shaped member 3 is located in the connecting cavity 14 to maintain piston motion to drive the arc-shaped member 3 to slide.

[0050] Specifically, such as Figure 3 As shown, the connecting cavity 14 in the connecting sleeve 1 is connected to the flow hole 111, and the first movable portion 31 of the arc-shaped member 3 is located in the connecting cavity 14 and keeps moving. Figure 7 As shown, the arc-shaped member 3 and the first movable part 31 are both arranged in the connecting sleeve 1 to slide relative to the axis of the circulation hole 111, and one side of the first movable part 31 is located in the communicating chamber 14. When the connecting sleeve 1 and the oil pipe connector 2 are connected to each other to form an oil circuit, the circulation hole 111 and the communicating chamber 14 are filled with high-pressure oil. At this time, due to the presence of high-pressure oil in the communicating chamber 14, the oil pressure is used to drive the first movable part 31 in the communicating chamber 14 to perform piston movement. At this time, the arc-shaped member 3 is driven by the oil pressure to slide closer relative to the axial direction of the circulation hole 111, and multiple interference parts 34 are close to each other and spliced ​​to form a tightening and sealing ring on the deformation ring 21, that is, the communicating chamber 14 connected to the circulation hole 111 is used to realize the sliding sealing by driving the arc-shaped member 3 by internal oil pressure, without adding an additional driving source, thereby facilitating the automatic tightening of the passage between the connecting sleeve 1 and the oil pipe connector 2, facilitating practical use, and improving assembly speed.

[0051] Secondly, when the connecting sleeve 1 and the oil pipe connector 2 form a passage, since the first movable portion 31 of the upper end of the arc-shaped member 3 is located in the connecting chamber 14, the abutting portion 34 of the lower end of the arc-shaped member 3 abuts against the deforming ring 21, and the deforming ring 21 is contacted by the oil pressure in the flow hole 111. The high-pressure oil circuit is prone to vibration due to changes in oil pressure when the oil is running. Since the flow areas of the connecting chamber 14 and the flow hole 111 are different, the frequencies of the oil pressure shock vibrations generated in the connecting chamber 14 and the flow hole 111 are inconsistent. The vibrations generated in the connecting chamber 14 can be transmitted to the deforming ring 21 of the oil pipe connector 2 through the arc-shaped member 3, and the deforming ring 21 receives the oil pressure shock vibrations in the flow hole 111, thereby achieving mutual contact of oil pressure shock vibrations of different frequencies to reduce the resonance between the connecting sleeve 1 and the oil pipe connector 2, and reduce the occurrence of oil leakage between the connecting sleeve 1 and the oil pipe connector 2 due to resonance;

[0052] Furthermore, since the threads of the oil pipe connector 2 are coupled with the threads of the connecting sleeve 1, and the deforming ring 21 of the oil pipe connector 2 is also in contact with the connecting sleeve 1, the contact and buffering between the deforming ring 21 and the connecting sleeve 1 can also reduce damage to the threads due to vibration, thereby increasing the service life of the oil pipe connector 2 and the connecting sleeve 1.

[0053] As another embodiment provided by the present invention, it also includes a reset component, which includes a first airbag component 51 and a second airbag component 52 arranged in the connecting sleeve 1 to drive the arc-shaped component 3 to slide back to the axis of the flow hole 111. The first airbag component 51 is connected to the third airbag component 53 set in the connecting sleeve 1. The first airbag component 51 is pressurized to cause the third airbag component 53 to expand and push the clamping component 4 to slide.

[0054] Specifically, such as Figure 7 As shown, a first airbag component 51, a second airbag component 52, and a third airbag component 53 are disposed in the connecting sleeve 1. The first airbag component 51 and the second airbag component 52 are disposed on a side of the first movable portion 31 facing away from the communicating cavity 14, and the first airbag component 51 is in communication with the third airbag component 53. The pressing member 4 is provided with a second movable portion 43. A driving cavity 18 is defined in the connecting sleeve 1. The contact portion 431 of the second movable portion 43 is slidably disposed in the driving cavity 18. The third airbag component 53 is also disposed in the driving cavity 18.

[0055] When the oil circuit is not connected, the first airbag component 51 and the second airbag component 52 are in the default state. The first airbag component 51 and the second airbag component 52 push the first movable part 31 to make the arc-shaped component 3 slide away from the axis of the flow hole 111. At this time, the arc-shaped components 3 are not spliced ​​together to form a sealing ring. When the oil circuit is connected and there is oil pressure in the communication chamber 14, the oil pressure drives the first movable part 31 to make the arc-shaped components 3 spliced ​​together to form a sealing ring, and the first movable part 31 is pressed and slides to compress the first airbag component 5 1 and the second airbag component 52, while at this time the first airbag component 51 is pressurized to inflate the third airbag component 53. At this time, the third airbag component 53 is inflated to push the contact portion 431, thereby pushing the pressing member 4 to slide closer to and press the folded end portion of the deforming ring 21. At this time, the first airbag component 51 and the third airbag component 53 are used to automatically press and lock the end portion of the deforming ring 21 when the oil circuit is connected, without adding an additional drive source, thereby increasing the operating stability of the pressing member 4.

[0056] When the oil circuit is disconnected again, requiring the connection sleeve 1 and the oil pipe connector 2 to be disassembled, the oil pressure within the communication chamber 14 disappears, and the first and second airbag components 51, 52 are deformed and reset to their default positions, pushing against the first movable portion 31 to slide, thereby causing the arc-shaped component 3 to slide away from the axis of the flow hole 111 to unlock the deformable ring 21. At this time, the internal air pressure of the third airbag component 53 decreases, causing it to shrink and reset, and the contact portion 431 of the pressing member 4 follows the third airbag component 53 as it slides away from the end of the deformable ring 21. The connection between the contact portion 431 and the third airbag component 53 can be a viscous connection, or the third airbag component 53 can be provided with a hook for connecting with the contact portion 431, or the third airbag component 53 can be provided with a component connected to the contact portion 431 by mortise and tenon, or other mechanisms known to those skilled in the art that can connect the third airbag component 53 to the interference portion 34 can be used as replacements.

[0057] In order to achieve that the first airbag component 51 is deformed and reset to the default state so that the third airbag component 53 can be reduced in volume, the deformation elasticity and hardness of the first airbag component 51 should be greater than those of the third airbag component 53 .

[0058] As another embodiment provided by the present invention, a buffer chamber 15 is opened in the connecting sleeve 1, the buffer chamber 15 is separated from the flow hole 111 by the interference portion 34, the buffer chamber 15 is separated from the connecting chamber 14 by the first movable portion 31, and the first airbag component 51 and the second airbag component 52 are both located in the buffer chamber 15.

[0059] Specifically, such as Figure 7 As shown, the arc-shaped member 3 is disposed in the buffer cavity 15, and the buffer cavity 15 is provided with a sliding groove 17. The abutment portion 34 of the arc-shaped member 3 is sealed and slidably disposed in the sliding groove 17 along both sides of the axial direction of the flow hole 111. At this time, the first movable portion 31 separates the buffer cavity 15 and the communicating cavity 14, while the abutment portion 34 separates the buffer cavity 15 and the flow hole 111. The end of the deformable ring 21 is folded and extends into the buffer cavity 15.

[0060] If the oil pressure in the flow hole 111 changes too much, causing accidental leakage between the deformable ring 21 and the insertion cavity 13, or oil leakage between the abutment portion 34 and the outer side of the deformable ring 21, the oil will easily leak gradually along the outer wall of the deformable ring 21 into the buffer cavity 15 to act as a buffer, thereby preventing the oil from directly leaking along the threads between the connecting sleeve 1 and the oil pipe connector 2;

[0061] Furthermore, the buffer chamber 15 is separated from the communicating chamber 14 by the first movable portion 31, so that only the oil that may leak from the gap between the inserted chamber 13 and the deformable ring 21 can enter the buffer chamber 15. If the gap between the inserted chamber 13 and the deformable ring 21 leaks oil for a long time, the leaked oil gradually fills the buffer chamber 15. Since the oil circuit in the flow hole 111 is a high-pressure oil circuit, and the flow hole 111 is connected to the buffer chamber 15 through the gap between the inserted chamber 13 and the deformable ring 21, if the gap continues to leak oil, the oil pressure in the buffer chamber 15 will gradually increase to the same level as the flow hole 111. When the oil pressure in the hole 111 is consistent and the oil pressure in the buffer chamber 15 increases to be greater than the first airbag component 51 and the second airbag component 52, the first airbag component 51 and the second airbag component 52 are further deformed and shrunk by the oil pressure in the buffer chamber 15, thereby driving the air pressure in the third airbag component 53 to increase and further expand, so that the clamping member 4 increases the clamping force at the end of the deforming ring 21 again, and the arc-shaped member 3 can also further increase the clamping force at the outside of the deforming ring 21, thereby increasing the sealing property of the deforming ring 21, thereby preventing the oil from continuing to leak in the gap between the extension chamber 13 and the deforming ring 21.

[0062] Furthermore, by the same token, if the oil pressure is too high and causes the deforming ring 21 to break and explode, the oil will easily push the arc-shaped member 3 to slide upward and fill the buffer chamber 15 to form a buffer, thereby preventing the explosion caused by excessive oil pressure from directly causing explosion damage to the threaded connection, thereby preventing the connecting sleeve 1 and the oil pipe connector 2 from directly bursting and disconnecting due to excessive oil pressure, thereby increasing the stability of the connection. Since the upper end of the arc-shaped member 3 is also affected by the oil pressure in the connecting chamber 14 and slides toward the flow hole 111, the presence of the arc-shaped member 3 can reduce the impact force generated when the oil pressure in the explosion flow hole 111 is too high.

[0063] As another embodiment provided by the present invention, a hook portion 41 is provided on one side of the upper bottom of the pressing member 4 , and the pressing member 4 is reset away from the deformable ring 21 so that the hook portion 41 pushes the end of the deformable ring 21 to fold away from the embedded portion 132 .

[0064] Specifically, such as Figure 7 As shown, a hook-shaped portion 41 is provided at the right end of the clamping member 4, i.e., the upper bottom side. When the oil circuit is connected, the arc-shaped member 3 slides under the oil pressure to pressurize the first airbag member 51 and the second airbag member 52. At this time, the third airbag member 53 is inflated and bulged to make the clamping member 4 contact the folded end of the deforming ring 21 and apply a clamping force. The clamping member 4 is in a partial truncated cone shell shape to deform and compress the end of the deforming ring 21 with a sharp tip. The sharp tip produced by the extrusion of the end of the deforming ring 21 is easily embedded in the hook-shaped portion 41, thereby further increasing the clamping and sealing effect of the clamping member 4 on the deforming ring 21, avoiding oil leakage at the end of the deforming ring 21, and increasing the sealing between the deforming ring 21 and the connecting sleeve 1.

[0065] Secondly, if the oil circuit is disconnected and the connecting sleeve 1 and the oil pipe connector 2 need to be disassembled and separated, the first airbag component 51 and the second airbag component 52 are deformed and reset to the default state, and the third airbag component 53 shrinks to allow the clamping component 4 to slide away from the deforming ring 21. At this time, the hook portion 41 follows the clamping component 4 to slide away from the deforming ring 21, so that the hook portion 41 can hook the folded end of the deforming ring 21 and fold it back again to move away from the embedded portion 132, thereby facilitating the deformation ring 21 to be removed and disassembled from the folded end extending into the cavity 13, and facilitating the disassembly and installation of the connecting sleeve 1 and the oil pipe connector 2.

[0066] As another embodiment provided by the present invention, an extension portion 42 extending to the sliding path of the arc-shaped member 3 is provided on one side of the upper bottom of the pressing member 4 .

[0067] Specifically, such as Figure 6 As shown, an extension portion 42 is provided on the upper bottom side of the arc-shaped member 3, and as shown Figure 7 As shown, the extension portion 42 extends to the sliding path of the arc-shaped member 3. When the oil circuit is disconnected and the connecting sleeve 1 and the oil pipe connector 2 need to be disassembled, the oil pressure in the connecting cavity 14 disappears, and the arc-shaped member 3 is elastically deformed and expanded by the first airbag member 51 and the second airbag member 52 to reset and push the arc-shaped member 3 to slide away from the deforming ring 21. At this time, the air pressure in the third airbag member 53 is reduced so that the pressing member 4 is elastically deformed and reduced to reset. Therefore, the pressing member 4 is pulled by the third airbag member 53 to slide away from the deforming ring 21. The deformation elasticity and hardness of the first airbag member 51 should be greater than those of the third airbag member 53. Therefore, the reset speed and amplitude of the arc-shaped member 3 are greater than those of the pressing member 4. The reset speed and arc of the component 4, that is, when the oil circuit pressure disappears, the arc-shaped component 3 is driven by the first airbag component 51 and the second airbag component 52 to move away from the deforming ring 21. At this time, the arc-shaped component 3 hits and moves the extension part 42 during the sliding upward process, so that the clamping component 4 shakes. First, the clamping component 4 shakes due to the movement to avoid the problem of pressure adhesion between the clamping component 4 and the deforming ring 21, which makes the clamping component 4 difficult to reset. Second, the extension part 42 at the upper bottom end of the clamping component 4 is lifted by the arc-shaped component 3, thereby increasing the degree to which the hook-shaped part 41 moves the end of the deforming ring 21 away from the embedded part 132, further facilitating the disassembly and secondary installation of the deforming ring 21.

[0068] Furthermore, the contact portion 34 of the arc-shaped member 3 can be provided with a flexible rubber layer to increase the sealing performance of the sealing ring formed by the contact portion 34. At the same time, the flexible rubber layer can be used to prevent the contact portion 34 and the extension portion 42 from causing severe collision and breakage. The flexible rubber layer can also be deformed to allow the contact portion 34 to separate from the extension portion 42.

[0069] As another embodiment provided by the present invention, an annular groove 133 is defined in the insertion cavity 13 and faces the abutting portion 34 .

[0070] Specifically, such as Figure 7 As shown, the annular groove 133 is provided with a V-shaped or C-shaped cross section extending into the cavity 13, and the annular groove 133 is directed toward the abutment portion 34. When the oil leaked from the flow hole 111 gradually fills the buffer cavity 15, the pressure of the oil in the buffer cavity 15 will compress the first airbag component 51 and the second airbag component 52 to further shrink, thereby driving the third airbag component 53 to further expand, so that the pressing member 4 increases the pressing force at the end of the deforming ring 21 again, and the arc-shaped member 3 can also further increase the pressure at the deforming ring 21. The tightening force on the outside of the deformable ring 21 causes the resistance portion 34 to tighten the deformable ring 21 and bend into the annular groove 133, thereby further increasing the sealing performance of the deformable ring 21 in the insertion cavity 13, avoiding oil leakage. Secondly, it can further increase the connection stability between the connecting sleeve 1 and the oil pipe connector 2, thereby increasing the usable time after oil leakage occurs between the connecting sleeve 1 and the oil pipe connector 2, and avoiding the bursting of the connecting sleeve 1 and the oil pipe connector 2 due to a short period of time without maintenance due to oil leakage.

[0071] As another embodiment provided by the present invention, the inner wall of the deformation ring 21 is provided with a wrapping ring 22 which is annular and used to wrap the sharp corner of the opening of the cavity 13 .

[0072] Specifically, such as Figure 8 As shown, since the inner wall of the deforming ring 21 is provided with an insertion cavity 13, the opening of the insertion cavity 13 has an annular sharp corner. When the oil pipe connector 2 is threadedly connected to the connecting sleeve 1, the deforming ring 21 is deformed into the insertion cavity 13, and the wrapping ring 22 wraps around the outside of the annular sharp corner of the opening of the insertion cavity 13, so that the oil pressure at the opening of the insertion cavity 13 is too high and oil leakage occurs. Secondly, when the deforming ring 21 is deformed and sealed in the insertion cavity 13, the wrapping ring 22 wraps around the sharp corner at the end of the insertion cavity 13, and the oil flows from here to the center of the flow hole 111, thereby reducing the oil pressure and leakage of the insertion cavity 13 here.

[0073] Working principle: The oil pipe connector 2 is connected to the connecting end 11 of the connecting sleeve 1 through a thread. At this time, as the oil pipe connector 2 enters the interior of the connecting end 11, the deforming ring 21 gradually extends into the interior of the connecting end 11, and the end of the deforming ring 21 gradually enters the insertion cavity 13 and deforms and expands along the inner wall of the insertion cavity 13 into a trumpet shape. When the end of the deforming ring 21 enters the insertion cavity 13 and contacts the inside of the interference bend 131, due to the continued screwing of the oil pipe connector 2, the end of the deforming ring 21 will be reversely folded along the interference bend 131, thereby causing the embedded portion 132 to be embedded in the folded end of the deforming ring 21, thereby causing the deforming ring 21 to be sealed between the interference bend 131 and the embedded portion 132 of the insertion cavity 13; and the wrapping ring 22 wraps around the opening of the insertion cavity 13 and has a ring-shaped sharp corner outer side;

[0074] At this time, the connection between the connecting sleeve 1 and the oil pipe connector 2 is completed. When an oil circuit is formed between the two and oil pressure is generated in the communicating chamber 14, the oil pressure drives the first movable portion 31 to splice the arc-shaped members 3 to each other to form a sealing ring that is tightened on the outside of the deforming ring 21. The first movable portion 31 is pressed and slides to compress the first airbag member 51 and the second airbag member 52. At this time, the first airbag member 51 is pressed to inflate the third airbag member 53. At this time, the third airbag member 53 is inflated to push against the contact portion 431, thereby pushing the pressing member 4 to slide closer to and press the folded end portion of the deforming ring 21, pressing the folded end portion of the deforming ring 21 so that the edge of the end portion has a sharp tip. The sharp tip generated by the extrusion of the end portion of the deforming ring 21 is easily embedded in the hook-shaped portion 41.

[0075] When the oil circuit is disconnected and the connecting sleeve 1 and the oil pipe connector 2 need to be disassembled, the oil pressure in the connecting chamber 14 disappears, and the first airbag component 51 and the second airbag component 52 are deformed and reset to the default state to push the first movable part 31 to slide, thereby causing the arc-shaped component 3 to slide away from the axis of the flow hole 111 to unlock the deforming ring 21. At this time, the internal air pressure of the third airbag component 53 is reduced and it shrinks and resets. The contact portion 431 of the clamping component 4 follows the third airbag component 53 to slide away from the end of the deforming ring 21, and the arc-shaped component 3 slides away from the axis of the flow hole 111 to unlock the deforming ring 21. The reset speed and amplitude of the arc-shaped member 3 are greater than the reset speed and arc of the clamping member 4, that is, when the oil circuit pressure disappears, the arc-shaped member 3 is driven by the first airbag member 51 and the second airbag member 52 to move away from the deforming ring 21. At this time, the arc-shaped member 3 hits and moves the extension part 42 during the sliding upward process, so that the clamping member 4 shakes, and the hook-shaped part 41 can hook the folded end of the deforming ring 21 to fold back again to move away from the embedded part 132, and then the oil pipe connector 2 can be rotated to be removed from the connecting sleeve 1.

[0076] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A leak-proof high-pressure oil pipe connector, characterized in that: include: A connecting sleeve (1) having a flow hole (111) formed therein, an insertion cavity (13) formed therein, and a contact bend (131) and an embedded portion (132) facing the contact bend (131) provided in the insertion cavity (13); An oil pipe connector (2) having a deformation ring (21) disposed thereon; The oil pipe connector (2) is threadedly installed in the connecting sleeve (1) so that the deformation ring (21) is deformed and expanded to enter the insertion cavity (13) and the end portion contacts the abutment bend (131) and then folds over, the embedding portion (132) is embedded in the folded portion of the end portion of the deformation ring (21), and the deformation ring (21) separates the threaded connection between the oil pipe connector (2) and the connecting sleeve (1) and the flow hole (111); It also includes a sealing assembly, the sealing assembly including a plurality of arc-shaped members (3) that slide relative to the axis of the flow hole (111), the plurality of arc-shaped members (3) being driven to slide together so that the abutment portions (34) provided thereon are spliced ​​to form a sealing ring that is clamped tightly on the outside of the deformation ring (21); It also includes a clamping assembly, which includes a clamping member (4) that is driven to slide relative to the end of the deformable ring (21) and clamp, the clamping member (4) being in the shape of a partial truncated cone shell, and the lower bottom side of the clamping member (4) faces the deformable ring (21); A connecting cavity (14) connected to the flow hole (111) is provided in the connecting sleeve (1); the first movable portion (31) of the arc-shaped member (3) is located in the connecting cavity (14) to maintain piston movement so as to drive the arc-shaped member (3) to slide; The device also comprises a reset assembly, comprising a first airbag component (51) and a second airbag component (52) which are arranged in the connecting sleeve (1) to drive the arc-shaped component (3) to slide away from the axis of the flow hole (111), the first airbag component (51) being connected to a third airbag component (53) arranged in the connecting sleeve (1), and the first airbag component (51) being pressurized to cause the third airbag component (53) to expand and push the pressing component (4) to slide; A buffer chamber (15) is provided in the connecting sleeve (1), the buffer chamber (15) being separated from the flow hole (111) by an abutment portion (34), the buffer chamber (15) being separated from the communication chamber (14) by a first movable portion (31), and the first airbag component (51) and the second airbag component (52) being both located in the buffer chamber (15).

2. A leak-proof high-pressure oil pipe connector according to claim 1, characterized in that: A hook-shaped portion (41) is provided on one side of the upper bottom of the pressing piece (4), and the pressing piece (4) is reset away from the deformable ring (21) so that the hook-shaped portion (41) pushes the end of the deformable ring (21) to be folded away from the embedded portion (132).

3. A leak-proof high-pressure oil pipe connector according to claim 2, characterized in that: An extension portion (42) extending to the sliding path of the arc-shaped member (3) is provided on one side of the upper bottom of the pressing member (4).

4. A leak-proof high-pressure oil pipe connector according to claim 1, characterized in that: An annular groove (133) facing the abutment portion (34) is provided in the insertion cavity (13).

5. The leakproof high-pressure oil pipe connector according to claim 1, characterized in that: The inner wall of the deformation ring (21) is provided with a wrapping ring (22) which is in a ring shape and is used to wrap the sharp corner of the opening extending into the cavity (13).

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