A high temperature resistant cable sealing joint

Abstract

The present application relates to high temperature cable joint sealing protection technical field, specifically relates to a kind of high temperature resistant cable sealing joint, including elastic vibrator, pressurizing mechanism, connecting block, fastening mechanism and connecting end, the elastic vibrator is cylindrical structure, the pressurizing mechanism is fixedly connected in the elastic vibrator, the connecting block is also cylindrical structure, one end of the connecting block is fixedly connected with the elastic vibrator, the other end of the connecting block is fixedly connected with the fastening mechanism;Device overall through the synergistic effect of elastic vibrator and air block, realize the structural flexibility stability of structure in high temperature environment, realize the pre-fixing of cable by the rotation pressurization of connecting block, while avoiding the possibility of stress concentration and damage, with high coordination and stability, reliable and durable cable fixation can be realized.

Description

Technical Field

[0001] This invention relates to the field of high-temperature cable joint sealing and protection technology, specifically to a high-temperature resistant cable sealing joint. Background Technology

[0002] A cable connector is a device used to connect two or more cables. The structure of a cable connector includes terminals, insulating materials, and a metal shell. The main function of a cable connector is to connect circuits so that current can be transmitted from one cable to another. High-temperature resistant cable sealing joint technology was developed to solve the problems of cable connectors being easily damaged and leaking current in high-temperature environments.

[0003] In high-temperature environments, cable joints are prone to poor sealing due to thermal expansion, leading to leakage and other problems that endanger the safe and stable operation of equipment. Based on this sealing issue, Liu Haijing, Wang Hongjie, Ke Lin, Ke Jianren, et al. published an article on sealing problems in the journal *Design and Application of High-Pressure Sealing Joints* (2009-06-25), article number: 1006-0316(2009)06-0076-02. The solution to the sealing problem in this journal involves machining a trapezoidal groove on the flange end face, with the middle... The steel ring connection method uses clamps to tighten the steel rings and achieve a seal. The internal seal is achieved by mechanically compressing the sealing gasket to tighten it around the three-phase cable and compress the inner cavity of the sleeve, thus achieving an internal seal of the joint. Epoxy resin is added in the middle to improve the mechanical strength of the cable. The connection between the cables is clamped with copper pipe and wrapped tightly with insulating material. This structure of the sealing joint is simple, reasonably designed, easy to operate, and has reliable sealing and electrical performance. Compared with the previous two types of electric pump wellheads, it will not damage the sealing performance and cable insulation performance due to improper force applied to the rubber gasket or rubber sleeve in the radish head.

[0004] Regarding the aforementioned sealed cable joints, as the temperature rises during use, the structure at the edge of the equipment will preheat and expand. For a rigid connection structure, the expanded structure will result in uneven connection ends. If shaking or other issues occur, cracks or unstable connections may easily appear at the equipment connection. As the usage time increases, damage or poor connection may occur, thereby affecting power transmission.

[0005] In view of this, and to address the aforementioned shortcomings, this invention develops a high-temperature resistant cable sealing joint. Summary of the Invention

[0006] The technical problem to be solved by this invention is that cable sealing joints are prone to deformation due to thermal expansion and contraction caused by high working environment temperature, which can easily change the sealing performance and lead to poor sealing.

[0007] This invention provides the following technical solutions:

[0008] A high-temperature resistant cable sealing joint is provided, comprising an elastic vibrator, a pressure-applying mechanism, a connecting block, a fastening mechanism, and a connecting end. The elastic vibrator is a cylindrical structure, which can connect two shafts and transmit torque while providing compensation and vibration damping. The cylindrical elastic vibrator can elastically deform when the shaft deviates or vibrates, allowing the device to tolerate a certain axial deviation while reducing vibration and impact during transmission, thus minimizing damage and malfunctions at the connection. The pressure-applying mechanism is fixedly connected inside the elastic vibrator, and is used to adaptively adjust the spacing of the elastic vibrator according to temperature changes to achieve connection flexibility. Connecting blocks, also cylindrical in structure, are fixedly installed at both ends of the elastic vibrator to fit against the elastic vibrator while exposing the torsionable area. One end of the connecting block is fixedly connected to the elastic vibrator, and the other end is fixedly connected to the fastening mechanism. The elastic vibrator, connecting block, and connecting end are all made of conductive materials to cooperate with other structures to achieve the conductive function of the conductive terminals.

[0009] Preferably, the fastening mechanism includes a fixed cavity, a compression cavity, and a housing; the housing is a hollow cylinder; the fixed cavity is fixedly connected to the pressurizing mechanism; the soft airbag is fixedly connected inside the fixed cavity; the design of the soft airbag helps to relieve stress at the connection and improve the stability and reliability of the connection; the soft airbag is connected to the compression cavity; a locking structure is provided inside the soft airbag; the inner wall of the housing has an annular vertical edge; the inner diameter of the annular vertical edge is the same as the radius of the fixed cavity; the locking structure is used to lock the fixed cavity and the annular vertical edge when the pressurizing mechanism is working, so as to ensure the sealing of the cable connection; the compression cavity is fixedly connected to the inner wall of the housing; the compression cavity is used to adaptively adjust the fastening strength at the connection according to the temperature; the annular vertical edge is fixedly connected to the inner wall of the housing to ensure that the gap between the pressurizing mechanism and the housing does not affect the fastening strength at the connection when the pressurizing mechanism is working.

[0010] Preferably, the soft airbag is provided with a locking structure, the soft airbag is fixedly connected to the spring plate, the fixing cavity is a near-cylindrical structure fixed inside the fixing cavity, the fixing cavity is a hollow structure, and the outer edge of the fixing cavity has through holes, the through holes are arranged in an array of 4-8, preferably 6, around the central axis of the connecting block, and the outer surface edge of the soft airbag is provided with locking blocks, the locking blocks are arranged in an array of 4-8, preferably 6, around the central axis of the connecting block, the size of the locking blocks matches the size of the connecting block, and the number of 6 can ensure that the overall Due to the stability after gas expansion and locking, one end of the locking block is fixedly connected to the spring plate. The size of the spring plate is four-fifths the size of the through hole. Since the spring plate is smaller than four-fifths of the through hole, and the spring plate is fixedly connected to the locking block, the spring plate can pass through the through hole more smoothly and preferentially. The spring plate can pass through the through hole under the push of the gas in the soft airbag. The locking block is engaged with the annular vertical edge, thereby achieving locking and fixing the fixed cavity in the current locking position under the push of air pressure.

[0011] Preferably, the compression chamber structure is annular and compressible. The compression chamber is fixedly connected to the inner wall of the housing. The compression chamber is filled with easily expandable gas. The thickness ratio of the compression chamber to the housing is 1:4, which allows the cable to be stably inserted from the connection end when the gas has not expanded. Furthermore, when the compression chamber is preheated and expanded, it can tightly adhere to the cable, thereby enabling the connection end to tightly lock the cable and achieve a sealing effect.

[0012] Preferably, the pressurizing mechanism includes a threaded rod, a threaded ring, and a push plate; the threaded ring is fixedly connected to the connecting block, and the threaded ring and the connecting block are arranged coaxially, so that the overall thickness is the same as the edge of the connection between the cable and the device, thereby ensuring that the axial force at the connection is the same. A groove is formed at the central axis of the connecting block, and the radius of the groove is the same as the maximum outer diameter of the threaded ring. The ratio of the length of the threaded ring to the other side of the connecting block to the length of the threaded rod is 2:1, and the length of the annular vertical side is three-quarters of the length of the threaded rod. The 2:1 ratio can satisfy the requirement that the threaded rod is located at the connecting axis. The internal embedding, combined with the length of the annular vertical edge, ensures that the fixing cavity fits precisely onto the annular vertical edge, thereby retracting and releasing the threaded ring. Even when the threaded ring reaches its maximum length, it remains in contact with the threaded ring, ensuring conductivity. Furthermore, the length of the annular vertical edge is set to three-quarters of the length of the threaded rod. This allows the locking structure at the edge of the fixing cavity to lock with the annular vertical edge while the compression cavity secures the cable. This ensures that the fixing cavity is fixed due to the thermal expansion of the gas when it is in close contact with the cable.

[0013] Preferably, one end of the threaded rod is fixedly connected to the push plate, and the push plate located inside the elastic vibrator is not fixedly connected to the compression airbag. The connection method is a movable connection, so that the airbag can be compressed and expanded in a fixed position. The threads of two adjacent pressurizing mechanisms are opposite. The opposite threads can be rotated by rotating the connecting block to realize the rotation of the fixedly connected threaded rod ring, so that the threaded rods on both sides of the connecting block extend away from each other.

[0014] Preferably, the elastic oscillator is a hollow structure, and a compressed air bladder is fixedly installed in the hollow structure area. The volume of the compressed air bladder at room temperature is the same as the volume of the hollow area of ​​the elastic oscillator. The edge of the compressed air bladder is fixedly connected to the edge of the inner wall of the elastic oscillator. At the same time, air blocks are fixedly connected between the springs of the elastic oscillator. The air blocks are selected and distributed between adjacent springs of the elastic oscillator. The number of air blocks between adjacent springs is set to 3-6, preferably 4. The 4 air blocks are evenly distributed between the springs of the elastic oscillator, which can make the force between adjacent springs the same and ensure that the distance between adjacent springs is the same, so as to realize the small bending at the connection. The air blocks surround the connection. The central axis of the block is spirally arrayed, forming an integral part with the compressed air bladder from top to bottom. The air blocks are connected to the interior of the compressed air bladder. The total number of air blocks is set between 30 and 60, preferably 25, and can fluctuate slightly. The specific number is adjusted according to the number of springs. The number ensures the overall coordination of the connection and prevents stress concentration at a single point when a small bending occurs, reducing the possibility of damage. The air blocks are connected to the compressed air bladder so that the air blocks can expand and deform when the compressed air bladder is compressed, thereby increasing the distance between adjacent springs. Due to the structural characteristics of the elastic oscillator, the elastic oscillator can bend at a larger angle, making the device connection more flexible.

[0015] The outer edge of the housing is coated with a heat-insulating coating. The housing, the push plate, and the elastic vibrator are all made of conductive materials. They are used to cooperate with the above-mentioned structures to replace the original traditional conductive terminal structure, thereby achieving the conductive function of the conductive terminal while making the structure more flexible.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. This invention utilizes the synergistic effect of an elastic oscillator and an air block, altering the shape of the elastic oscillator through the thermal expansion and contraction of the gas, resulting in a more flexible and stable structure under high-temperature conditions. The invention also achieves pre-fixation of the cable through the rotation and pressure of the connecting block, while avoiding the possibility of stress concentration and damage. This results in high coordination and stability, enabling reliable and durable cable fixation.

[0018] 2. This invention incorporates a locking structure within the fastening mechanism, allowing the locking structure to self-lock the fastening mechanism based on temperature changes. This securely fixes the position of the fastening mechanism and the cable, firmly connecting the two ends of the cable. Furthermore, the fastening mechanism utilizes gas for stabilization, enabling sealed connections for cable heads of different sizes or with uneven connection points, thus providing greater flexibility.

[0019] 3. By setting up an elastic oscillator and cooperating with its internal structure, this invention achieves a structure whose flexibility is directly proportional to the temperature under high temperature conditions. This makes the structure more adaptable to the environment. At the same time, the structure is easy to install, and stability in high-temperature environments can be achieved through pre-fixing, making it more practical. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 3 This is a front view of the locking structure of the present invention;

[0024] Figure 4 This is a three-dimensional cross-sectional view of the overall structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the locking structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the spring oscillator of the present invention;

[0027] Figure 7 This is a partially enlarged view of the spring oscillator of the present invention;

[0028] Figure 8 This is a schematic diagram of the locking structure of the present invention;

[0029] Figure 9 This is a schematic diagram of the locking structure of the present invention.

[0030] Figure 10This is a schematic diagram of the cable connection according to the present invention.

[0031] In the diagram: 1. Fastening mechanism; 11. Fixing cavity; 111. Through hole; 12. Compression cavity; 13. Housing; 131. Annular vertical edge; 14. Soft airbag; 141. Spring plate; 142. Locking block; 2. Pressurizing mechanism; 21. Threaded rod; 22. Threaded ring; 23. Push plate; 3. Elastic vibrator; 31. Compression airbag; 311. Air block; 32. Spring; 4. Connecting block; 41. Groove; 5. Connecting end. Detailed Implementation

[0032] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0033] Example 1:

[0034] like Figure 1 , Figure 2 As shown, a high-temperature resistant cable sealing joint is provided, including an elastic vibrator 3, a pressure mechanism 2, a connecting block 4, a fastening mechanism 1, and a connecting end 5.

[0035] The cylindrical structure of the elastic vibrator 3 can connect two shafts and transmit torque while providing compensation and vibration reduction. The cylindrical elastic vibrator 3 allows for elastic deformation during shaft offset or vibration, enabling the device to tolerate a certain axial deviation while reducing vibration and impact during transmission, thus minimizing damage and malfunctions at the connection point. The pressure mechanism 2 is fixedly connected inside the elastic vibrator 3. The pressure mechanism 2 adaptively adjusts the spacing of the elastic vibrator 3 according to temperature changes to achieve connection flexibility. Connecting blocks 4 are fixedly connected to both ends of the elastic vibrator 3. The connecting blocks 4 are also cylindrical and are designed to fit snugly against the elastic vibrator 3 while exposing the torsion zone. One end of the connecting block 4 is fixedly connected to the elastic vibrator 3, and the other end is fixedly connected to the fastening mechanism 1. The elastic vibrator 3, connecting blocks 4, and connecting end 5 are all made of conductive materials to cooperate with other structures and achieve the conductive function of the conductive terminals.

[0036] The cylindrical structure of the elastic vibrator 3 not only connects two shafts and transmits torque, but also provides compensation and shock absorption. The advantage of the cylindrical elastic vibrator 3 lies in its elastic deformation, allowing the device to tolerate a certain axial deviation and reducing vibration and impact during transmission, thus preventing damage and malfunctions at the connection. The pressurizing mechanism 2 is fixedly connected inside the elastic vibrator 3, allowing for adaptive adjustment of the spacing of the elastic vibrator 3 according to temperature changes, thus achieving connection flexibility. This adaptive design ensures the connection remains in a suitable state, maintaining good connection even under significant temperature variations. Connecting blocks 4 are fixedly connected to both ends of the elastic vibrator 3. The connecting blocks 4 are also cylindrical and designed to fit snugly against the elastic vibrator 3, exposing the torsion zone. The other end of the connecting block 4 is fixedly connected to the fastening mechanism 1. This design allows the fastening mechanism 1 to be more securely fixed to the device and improves the reliability of the connection. This design facilitates the replacement and maintenance of the connecting blocks 4, and also allows the fastening mechanism 1 to be more flexibly applied to various types of cables.

[0037] like Figures 1 to 4 As shown, the fastening mechanism 1 includes a fixed cavity 11, a compression cavity 12, and a housing 13. The housing 13 is a hollow cylinder, and its interior is divided into the fixed cavity 11 and the compression cavity 12. The fastening strength at the connection can be adjusted by the pressurizing mechanism 2, thereby improving the stability and reliability of the connection. A soft airbag 14 is provided in the fixed cavity 11, which can relieve the stress at the connection and reduce connection failures caused by excessive stress at the connection. The soft airbag 14 is connected to the compression cavity 12. A locking structure is provided in the fixed cavity 11, which can lock the fixed cavity 11 to the annular vertical edge 131 when the pressurizing mechanism 2 is working, thereby ensuring... The cable connection is sealed. Meanwhile, the annular vertical edge 131 is fixedly connected to the inner wall of the housing 13, and its inner diameter is the same as the radius of the fixing cavity 11. This prevents the gap between the pressurizing mechanism 2 and the housing 13 from affecting the fastening strength of the connection. Furthermore, the compression cavity 12 is fixedly connected to the inner wall of the housing 13. The compression cavity 12 is an annular compressible structure. This annular compressible structure allows for pre-fixing of the cable during connection at the connection end 5. The annular compressible structure can wrap the cable more tightly according to the preheating expansion of the gas, and compared to other shapes, it provides better sealing. This allows for adaptive adjustment of the fastening strength of the connection based on temperature, further improving the stability and reliability of the connection.

[0038] When cables that need to be connected at both ends are connected through this structure, during the movement of the fixed cavity 11, since the soft airbag 14 is fixedly installed inside the fixed cavity 11 and the soft airbag 14 is connected to the compression cavity 12, which is also a compressible structure, and since the soft airbag 14 and the compression cavity 12 are sealed spaces, the volume of the compression cavity 12 decreases when the fixed cavity 11 moves, causing the compression cavity 12 at the edge of the housing 13 to expand, fixing the cable inserted therein from the outer edge, so that the cable is pre-fixed at the connection end 5. At the same time, the locking structure locks with the annular vertical edge 131, fixing the fixed cavity 11 in the current position. Under the gas pressure in the compression cavity 12, the fixed cavity 11 is stuck in the housing 13. Since the compression cavity 12 surrounds the inner surface edge of the housing 13, the gas in the compression cavity 12 expands when the external temperature rises. The higher the temperature, the tighter the compression cavity 12 fits with the cable connector, thereby achieving connection stability.

[0039] The overall fastening mechanism 1 utilizes the high temperature environment of the gas, which has good gas activity. The gas expands in the compression chamber 12. Since the compression chamber 12 is fixedly connected to the inner wall of the housing 13 and the other end is tightly attached to the cable, the volume is fixed. The gas expands and the connection is sealed under the high pressure of the gas. Compared with the traditional threaded connection method, this method is more secure and more stable.

[0040] like Figure 3 , Figure 8 and Figure 9As shown, the soft airbag 14 is equipped with a locking structure. The soft airbag 14 is fixedly connected to the spring plate 141. The spring plate 141 is designed to achieve a tight fit with the soft airbag 14, thereby ensuring the stability and reliability of the connection. Based on this, the fixing cavity 11 is designed as a near-cylindrical structure to better fix the soft airbag 14 and ensure that no abnormal deformation occurs inside the fixing cavity 11. Through holes 111 are formed on the outer edge of the fixing cavity 11, arranged in a six-hole array around the central axis of the connecting block 4. Locking blocks 142 are provided on the outer surface edge of the soft airbag 14. The size of the locking blocks 142 is the same as that of the connecting block 4. The locking blocks 142 are of the same size and number six. In this embodiment, the number of locking blocks 142 matches the number of through holes 111. This ensures the stability of the entire connection after gas expansion and locking. One end of the locking block 142 is fixedly connected to the spring plate 141. The size of the spring plate 141 is four-fifths the size of the through hole 111. Since the size of the spring plate 141 is smaller than that of the through hole 111, the spring plate 141 can pass through the through hole 111 more easily. Under the push of the gas in the soft airbag 14, the spring plate 141 can pass through the through hole 111 and lock the soft airbag 14 onto the connecting block 4, thereby ensuring the tightness of the connection.

[0041] like Figure 3 - Figure 5 As shown, the locking structure uses gas for locking. When the ambient temperature is low, i.e., when it is not in operation, the pressure inside the locking block 142 is low, and the locking block 142 is in a movable state. The spring plate 141 moves synchronously with the locking block 142. When the fixed cavity 11 moves, the cable is inserted into the connecting end 5, and the fixed cavity 11 is gradually pushed. The total amount of gas in the sealed space remains unchanged, but the volume changes, causing the internal pressure to increase. The locking block 142 is pushed up by the gas, and the spring plate 141 is pushed by the locking block 142. When the spring plate 141 is locked to the annular vertical edge 131, the change in gas volume is small due to the low ambient temperature. In the current connection state, the fixing method mainly relies on the pressurization mechanism 2. When the temperature rises, the gas activity of the soft airbag 14 increases. Within the fixed space, the locking block 142 is pushed up, and the spring plate 141 is pushed out, thus locking the structure. Due to the presence of the annular vertical edge 131, the locking structure becomes more secure as the temperature of the working area increases, and it is also more stable due to the gas.

[0042] The overall structure is locked by gas, giving it excellent stability and reliability. It is superior in terms of connection and can adaptively adjust the connection stability according to changes in the working environment temperature. Compared with traditional technology that only relies on pressure mechanism for fixation, the more stable and reliable locking mechanism provided in this embodiment can adapt to changes in temperature and gas pressure, thus expanding its applicability.

[0043] The compression chamber 12 has an annular and compressible structure. The compression chamber 12 is fixedly connected to the inner wall of the housing 13. The compression chamber 12 is filled with easily expandable gas. The thickness ratio of the compression chamber 12 to the thickness of the housing 13 is 1:4, which allows the device to adaptively adjust to different sizes of cables. Because a space of 1:4 is reserved, it ensures that the cable can be stably inserted when pre-connected to the housing 13 from the connection end 5, and that the compression chamber 12 can fit tightly against the cable when preheated and expanded.

[0044] like Figure 2 - Figure 4 As shown, during connection, before the connecting block 4 is twisted, the connection can be made using the compression chamber 12 fixedly connected to the inner wall edge of the housing 13. Before the cable is inserted, the gas inside the compression chamber 12 will be evenly dispersed in the sealed space, making the cable insertion operation simple. In addition, since the ratio of the thickness of the compression chamber 12 to the thickness of the housing 13 is 1:4, cables of different cross-sectional areas can be directly inserted without any change in the gas pressure inside the compression chamber 12, and the connection can be made based on gas expansion. Compared with most pressure-type connection methods, using the compression chamber 12 for connection is more convenient.

[0045] like Figure 2 and Figure 4As shown, the pressurizing mechanism 2 includes a threaded rod 21, a threaded ring 22, and a push plate 23. The threaded ring 22 is fixedly connected to the connecting block 4, and the two are arranged coaxially to ensure that the axial force at the connection is the same. A groove 41 is provided at the central axis of the connecting block 4. The radius of the groove 41 is the same as the maximum outer diameter of the threaded ring 22. By setting the radius, the threaded ring 22 can be extended and retracted within the groove 41. The length of the threaded ring 22 to the other side of the connecting block 4 is twice the length of the threaded rod 21, so that the threaded ring 22 can be retracted and extended. To ensure conductivity, the threaded ring 22 reaches its limit. The length still needs to contact the threaded ring 22; at the same time, in order to achieve locking, the ratio of the length of the threaded ring to the other side of the connecting block to the length of the threaded rod is 2:1, and the length of the annular vertical edge 131 needs to be set to three-quarters of the length of the threaded rod 21, so that the locking structure of the edge of the fixing cavity 11 can lock with the annular vertical edge 131; in order to ensure that the axial force at the connection is the same, the thickness of the cable connection edge is the same everywhere, and the ratio of the thickness of the compression cavity 12 to the thickness of the housing 13 is 1:4, so as to ensure that it will not affect the cable insertion. This kind of pressure installation method is more convenient than most pressure connection methods.

[0046] The pressurizing mechanism 2 rotates the threaded ring 22 via the rotation of the connecting block 4, thereby driving the movement of the threaded rod 21 and achieving pressurized fixing of the cable. In this structure, the threaded ring 22 is coaxially arranged with the connecting block 4, and the radius of the groove 41 is the same as the maximum outer diameter of the threaded ring 22, ensuring that the axial force at the connection is the same. The length of the threaded ring 22 to the other side of the connecting block 4 is twice the length of the threaded rod 21, allowing the threaded ring 22 to be retracted and extended, thus facilitating the pressurized fixing of the cable. To achieve locking, the length of the annular vertical edge 131 is set to three-quarters of the length of the threaded rod 21, ensuring that the locking structure at the edge of the fixing cavity 11 can lock with the annular vertical edge 131. To ensure that the axial force at the connection is the same, the thickness of the cable connection edge is the same everywhere, and the thickness ratio of the compression cavity 12 to the shell 13 is 1:4, ensuring that it will not affect cable insertion. This pressurized installation method is more convenient than most pressure-type connection methods and has better operability and applicability.

[0047] One end of the threaded rod 21 is fixedly connected to the push plate 23, which is located inside the elastic vibrator 3. The push plate 23 is not directly connected to the compression airbag 31 but is connected in a movable manner so that the airbag can be compressed and expanded in a fixed position. The threads of two adjacent pressurizing mechanisms 2 are opposite in direction. The connecting block 4 can rotate to make the threaded rod 21 rotate in a ring, thereby causing the threaded rods 21 on both sides of the connecting block 4 to extend apart.

[0048] like Figure 6 and Figure 7 As shown, the elastic vibrator 3 has a hollow structure, in which a compression airbag 31 is provided. At room temperature, the volume of the compression airbag 31 is the same as the volume of the hollow area, and the edge of the compression airbag 31 is fixedly connected to the inner wall edge of the elastic vibrator 3. The air blocks 311 are fixedly connected between the springs 32 of the elastic vibrator 3. The number of air blocks 311 is set to 4 between adjacent springs 32 and is evenly distributed between the springs 32 to ensure that the adjacent springs 32 are subjected to the same force and have equal spacing, thereby achieving a small bending at the connection. The air blocks 311 are spirally distributed around the central axis of the connecting block 4, forming a whole with the compression airbag 31. There are a total of 25 air blocks 311. The number is adjusted according to the number of springs 32 to ensure the overall coordination of the connection. The air blocks 311 are connected to the inside of the compression airbag 31 to realize the expansion and deformation of the air blocks 311 in the compression airbag 31, thereby increasing the distance between adjacent springs 32 and reducing the possibility of damage.

[0049] Under the rotation of the connecting block 4, the pressurizing mechanism 2 pushes the compression airbag 31 through the push plate 23. Since the gas inside the compression airbag 31 is fixed, the internal pressure increases. After the pressure increases, the gas moves to the area with lower pressure. At this time, the air block 311 is lifted by the gas. Since the air block 311 is fixedly connected between the springs 32, the springs 32 are lifted by the air block 311, which creates a gap between the adjacent springs 32, resulting in a greater degree of bending than in the normal state. This allows the elastic vibrator 3 to have a larger bending space. As the working temperature increases, the gas becomes more active and gradually expands, causing the gap between the elastic vibrators 3 to gradually increase. The overall expansion limit should be controlled within a reasonable limit to achieve a more flexible connection as the temperature rises.

[0050] The entire device, including the housing 13, the push plate 23, and the elastic vibrator 3, is made of a metal with good electrical conductivity. The outer edge of the housing 13 is coated with a heat-insulating coating to cooperate with the above-mentioned structures, replacing the original traditional conductive terminal structure, thereby realizing the conductive function of the conductive terminal while making the structure more flexible.

[0051] At work, such as Figure 10 As shown, the cables at both ends need to be connected, sealed, and fixed. By twisting the connecting block 4, the connecting block 4 drives the threaded ring 22 to rotate, causing the threaded rods 21 to move closer to each other. Due to the low temperature and small gas volume in the fixing cavity 11, the locking structure can be stretched under a certain external force. The compression cavity 12 is also in a non-expanded state. The pressurizing mechanism 2 at the other end of the connecting block 4 is also far away from the compression airbag 31. The spacing between the springs 32 is small at this time, allowing only a small degree of bending. Due to the thickness limitation of the non-expanded connecting end 5, the cable to be connected can be directly inserted. At this time, there is a certain gap between the cable and the housing 13. By rotating the connecting block 4, the pressurizing mechanism 2 applies pressure to both sides, pushing the push plate 23 to make the fixed cavity 11 start to move. The fixed cavity 11 is connected to the compression cavity 12. Under the action of gas compression, the compression cavity 12 is in close contact with the cable. Since the gas is connected in the sealed space, the locking structure also expands. The locking block 142 is pushed up under the action of gas flow, so that the spring plate 141 pops out from the through hole 111 and locks with the annular vertical edge 131. Under the action of the pressurizing mechanism 2, the other end of the connecting block 4 compresses the air bladder 31, and the air block 311 expands, so that the distance between the springs 32 increases.

[0052] When the operating temperature rises, the compression chamber 12 is a closed space. The gas expands when heated, thus adhering more tightly to the cable. The higher the temperature, the stronger the environmental influence. At this time, the connection is more stable. Meanwhile, due to the action of the air block 311, the bending angle of the elastic vibrator 3 at the other end is also gradually increasing, so that the elastic vibrator 3 can bend to a greater extent, allowing the connection to adapt to external influences.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-temperature resistant cable sealing joint, comprising a fastening mechanism (1), a pressurizing mechanism (2), an elastic vibrator (3), a connecting block (4), and a connecting end (5), characterized in that: The elastic vibrator (3) is a cylindrical structure. The elastic vibrator (3) is used to ensure connection stability through elastic force when axial angle deviation occurs at the connection of the fastening mechanism (1). The pressure mechanism (2) is fixedly installed inside the elastic vibrator (3). The pressure mechanism (2) is used to adaptively adjust the spacing of the elastic vibrator (3) according to temperature changes to achieve connection flexibility. The connecting blocks (4) are fixedly installed at both ends of the elastic vibrator (3). The connecting blocks (4) are cylindrical structures. The elastic vibrator is fixedly installed at one end of the connecting blocks (4). The fastening mechanism (1) is fixedly installed on the other end of the connecting block (4). The connecting block (4) is used to cooperate with the pressurizing mechanism (2) to pressurize and connect the connecting end (5) to the elastic vibrator (3). The fastening mechanism (1) is used to cooperate with the connecting block (4) to achieve snap-fit ​​and fix the connecting end (5) to the cable. The elastic vibrator (3), the connecting block (4) and the connecting end (5) are all made of conductive materials and are used to cooperate with other structures to achieve the conductive function of the conductive terminal. The fastening mechanism (1) includes a fixed cavity (11), a compression cavity (12), and a housing (13); the housing (13) is a hollow cylinder; the fixed cavity (11) is fixedly connected to the pressurizing mechanism (2); a soft airbag (14) is fixedly installed inside the fixed cavity (11); the soft airbag (14) is connected to the compression cavity (12); an annular vertical edge (131) is provided on the inner wall of the housing (13); the inner diameter of the annular vertical edge (131) is the same as the radius of the fixed cavity (11); the soft airbag (14) is used to lock the fixed cavity (11) and the annular vertical edge (131) when the pressurizing mechanism (2) is working to ensure the sealing of the cable connection; the compression cavity (12) is fixedly connected to the inner wall of the housing (13); the compression cavity (12) is used to adaptively adjust the fastening strength at the connection according to the temperature. The soft airbag (14) is fixedly connected to the spring plate (141). The outer edge of the fixed cavity (11) is provided with a through hole (111). The through holes (111) are arranged in an array of 4-8 around the central axis of the connecting block (4). The soft airbag (14) is fixedly installed inside the fixed cavity (11). The outer surface of the soft airbag (14) is provided with a locking block (142). The locking blocks (142) are arranged in an array of 4-8 around the central axis of the connecting block (4). The size of the locking block (142) matches the size of the connecting block (4). One end of the locking block (142) is fixedly connected to the spring plate (141). The size of the spring plate (141) is four-fifths the size of the through hole (111).

2. The high-temperature resistant cable sealing joint according to claim 1, characterized in that: The compression chamber (12) is an annular compressible structure. The compression chamber (12) is fixedly connected to the inner wall of the shell (13). The thickness ratio of the compression chamber (12) to the shell (13) is 1:

4.

3. The high-temperature resistant cable sealing joint according to claim 1, characterized in that: The pressurizing mechanism (2) includes a threaded rod (21), a threaded ring (22), and a push plate (23); the threaded ring (22) is coaxially fixedly connected to the connecting block (4), and a groove (41) is provided at the central axis of the connecting block (4). The radius of the groove (41) is the same as the maximum outer diameter of the threaded ring (22). The groove (41) is used to combine with the threaded rod (21) to realize the pressurization and depressurization process of the compression chamber (12).

4. A high-temperature resistant cable sealing joint according to claim 3, characterized in that: The ratio of the length of the threaded ring (22) to the length of the threaded rod (21) on the other side of the connecting block (4) is 2:1, and the length of the annular vertical edge (131) is three-quarters of the length of the threaded rod (21).

5. A high-temperature resistant cable sealing joint according to claim 3, characterized in that: The push plate (23) is fixedly connected to one end of the threaded rod (21); the threads of two adjacent pressure mechanisms (2) are opposite, and the pressure mechanism (2) is used to achieve unidirectional rotation to satisfy the extension of the connecting block (4) on both sides.

6. A high-temperature resistant cable sealing joint according to claim 1, characterized in that: The elastic vibrator (3) is a hollow structure and has a compressed air bladder (31) inside. The edge of the compressed air bladder (31) is fixedly connected to the edge of the inner wall of the elastic vibrator (3). An air block (311) is provided on the edge of the compressed air bladder (31), and the air block (311) is connected to the compressed air bladder (31). The air block (311) is fixedly connected between the springs (32) of the elastic vibrator (3). There are 3 to 6 air blocks (311) between adjacent springs (32). The air blocks (311) are arranged in a spiral array of 10 to 40 around the central axis of the connecting block (4).

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