A cable inflation pressurization device

Abstract

The application relates to a cable inflation pressurizing device which comprises a clamping ring, a circular pressing plate, an axial clamping mechanism, a locking mechanism and a gas guide interface, a plurality of holes are uniformly distributed in the circumferential direction of the clamping ring, a plurality of holes are uniformly distributed in the circumferential direction of the circular pressing plate, the plurality of holes of the circular pressing plate correspond to the positions of the plurality of holes of the clamping ring, a gas guide hole is arranged at the center position of the circular pressing plate, the axial clamping mechanism is uniformly distributed in the circumferential direction on the clamping ring and the circular pressing plate, the axial clamping mechanism is slidably connected with the circular pressing plate, the clamping ring is detachably connected with a guide rod, the locking mechanism is arranged on the clamping ring, the locking mechanism is fixedly connected with the clamping ring, the gas guide interface is located outside the gas guide hole at the center position of the circular pressing plate, and the gas guide interface is fixedly connected with the gas guide hole; the application has the technical effect of adapting to the axial fixing requirements of cables with different diameters.

Description

Technical Field

[0001] This application relates to the technical field of cable maintenance equipment, and in particular to a cable inflation and pressurization device. Background Technology

[0002] Currently, cable inflation and pressurization devices are widely used in power, telecommunications, petrochemical and other fields, mainly for... Cable sealing test, internal cable dehumidification, and cable air pressure maintenance.

[0003] The clamping and fixing device is an important part of the cable inflation and pressurization device. Traditional clamps for cable compatibility usually adopt a single-specification fixed structure, which can only match cables within a specific diameter range. Frequent clamp replacements are required, and the problem of insufficient equipment versatility is particularly significant. Existing clamp design concepts are limited to circumferential clamping, and only achieve physical clamping of the cable's outer circumference through rubber sealing rings or metal claws, but lack an effective constraint mechanism for the cable's axial direction.

[0004] Regarding the aforementioned technologies, the applicant believes that there is a deficiency in the requirement for sufficient axial fixation. Utility Model Content

[0005] To solve the above-mentioned technical problems, this application provides a cable inflation and pressurization device.

[0006] This application provides a cable inflation and pressurization device, which adopts the following technical solution: A cable inflation and pressurization device includes a retaining ring, a circular pressure plate, an axial clamping mechanism, a locking mechanism, and an air guide port. The retaining ring has multiple holes evenly distributed circumferentially, and the circular pressure plate also has multiple holes evenly distributed circumferentially. The holes in the circular pressure plate correspond to the holes in the retaining ring. An air guide hole is located at the center of the circular pressure plate. The axial clamping mechanism is evenly distributed circumferentially on the retaining ring and the circular pressure plate, and is slidably connected to the circular pressure plate. The retaining ring and the axial clamping mechanism are detachably connected. The locking mechanism is mounted on the retaining ring and is fixedly connected to it. The air guide port is located outside the air guide hole at the center of the circular pressure plate and is fixedly connected to the air guide hole.

[0007] By adopting the above technical solution, the buckle and the circular pressure plate are evenly distributed with corresponding holes along the circumference. When connected by the axial clamping mechanism, it can ensure that the clamping force is evenly distributed along the circumference of the cable. The axial clamping mechanism and the pressure plate are slidably connected to restrict the axial movement of the cable, which can adapt to the axial limit requirements of cables of different diameters and meet the axial positioning requirements. The locking mechanism ensures that the buckle and the circular pressure plate close synchronously when locking, avoiding cable deviation or sealing failure caused by unilateral force.

[0008] Preferably, the axial clamping mechanism includes a locking nut and a guide rod. The guide rod is threaded and slidably connected to a circular pressure plate. The locking nut is located outside the holes evenly distributed circumferentially on the circular pressure plate. The locking nut is detachably connected to one end of the guide rod. Two fixing nuts are located on both sides of the holes evenly distributed circumferentially on the buckle. The fixing nuts are detachably connected to the other end of the guide rod.

[0009] By adopting the above technical solution, the guide rod is engaged with the locking nut through a thread. When the locking nut is rotated, the circular pressure plate can be pushed to move along the axial direction of the guide rod. By adjusting the screw depth of the nut, the clamping force of the pressure plate on the cable end face can be precisely controlled, realizing stepless adjustment from flexible fixation to rigid locking. The two fixing nuts are located on both sides of the buckle hole to form a mechanical anti-loosening structure. When the equipment vibrates or the air pressure fluctuates, causing the guide rod to be subjected to axial tension, the nuts on both sides abut against each other to meet the axial positioning requirements.

[0010] Preferably, the locking mechanism includes a first threaded mechanism, a first locking bolt, and a first rotating rod. The first threaded mechanism is fixedly connected to the buckle, and one end of the first threaded mechanism is slidably connected to the first locking bolt. The first rotating rod is fixedly connected to the other end of the first locking bolt, and the first rotating rod and the first locking bolt are perpendicular to each other.

[0011] Preferably, the locking mechanism is provided with a plurality of locking devices along the circumference of the buckle. Each locking device includes a second threaded mechanism, a second locking bolt, and a second rotating rod. The locking devices and the locking mechanism are evenly distributed and installed on the buckle along the circumference, and the locking devices are fixedly connected to the buckle.

[0012] By adopting the above technical solution, the uniformly distributed combination structure of the locking mechanism and locking device achieves three-point positioning. The first threaded mechanism and the second threaded mechanism cooperate with the first locking bolt and the second locking bolt, respectively, to build a stable connection structure on the retaining ring. When the first rotating rod and the second rotating rod are rotated, the position of the bolts can be adjusted accurately and effectively, so that the locking mechanism cooperates with the axial clamping mechanism to achieve radial and axial fastening.

[0013] Preferably, a sealing system is provided at the connection between the circular pressure plate and the cable. The sealing system includes a sealing base and an elastic sealing element. The sealing base is annular and fixed to the inner side of the circular pressure plate. The inner diameter of the sealing base is adapted to the outer diameter of the target cable. The elastic sealing element is embedded in the sealing base.

[0014] By adopting the above technical solution, the elastic seal is embedded in the sealing base and can fit tightly against the outer surface of the cable. When the elastic seal is pressurized, the internal air pressure will further squeeze the cable surface and the inner wall of the sealing installation groove. The higher the air pressure, the greater the deformation of the elastic seal, thus enhancing the sealing effect.

[0015] Preferably, the air inlet includes an inlet body, a sealing component, and a one-way valve. One end of the inlet body is installed on the air inlet hole at the center of the outer side of the circular pressure plate, and the inlet body is fixedly connected to the air inlet hole on the outer side of the circular pressure plate. The sealing component is located inside the inlet body near the position where it is connected to the circular pressure plate, and the sealing component is embedded inside the inlet body. The one-way valve is installed inside the inlet body on the side of the sealing component away from the circular pressure plate, and the one-way valve is fixedly connected to the inlet body.

[0016] By adopting the above technical solution, the functions of gas guiding, sealing, and backflow prevention are integrated into a single interface, simplifying the system structure. The sealing component is embedded at the connection between the interface body and the pressure plate, and a radial seal is formed through interference fit. The one-way valve only allows gas to flow in one direction to prevent gas backflow.

[0017] Preferably, it also includes a pressure gauge interface, which is located on the side of the air inlet away from the air inlet. The pressure gauge interface is integrated with the air inlet, and the outside of the pressure gauge interface is provided with threads.

[0018] By adopting the above technical solution, a pressure gauge interface is integrated on the side of the air inlet away from the air inlet and an external thread is designed. The pressure gauge interface can be directly connected to a mechanical pressure gauge or a digital pressure sensor to display the air pressure value inside the sealed cavity in real time. Through this technical improvement, the real-time monitoring capability, ease of operation and compact structure of the pneumatic sealing system can be further improved.

[0019] Preferably, a flexible hose is provided at the air inlet, and the flexible hose is provided with a quick-release structure. The flexible hose can be directly connected to the pressure gauge interface through the quick-release structure, and the flexible hose and the pressure gauge interface are detachably connected.

[0020] By adopting the above technical solution, quick-release couplings are used to achieve rapid connection between the hose and the pressure gauge interface, improving efficiency. Flexible hoses are selected, and the length can be customized according to requirements, breaking through the limitations of the air inlet position.

[0021] In summary, this application includes at least one of the following beneficial technical effects: The guide rod is threaded and engages with a locking nut. When the locking nut is rotated, it can push the circular pressure plate to move along the axial direction of the guide rod. By adjusting the screw depth of the nut, the clamping force of the pressure plate on the cable end face can be precisely controlled, realizing stepless adjustment from flexible fixation to rigid locking. The two fixing nuts are located on both sides of the buckle hole to form a mechanical anti-loosening structure. When the equipment vibrates or the air pressure fluctuates, causing the guide rod to be subjected to axial tension, the nuts on both sides abut against each other to meet the axial positioning requirements.

[0022] The acute-angled combination structure of the locking mechanism and locking device achieves three-point positioning. The first threaded mechanism and the second threaded mechanism cooperate with the first locking bolt and the second locking bolt, respectively, to build a stable connection structure on the retaining ring. When the first rotating rod and the second rotating rod are rotated, the position of the bolts can be adjusted accurately and effectively, so that the locking mechanism cooperates with the axial clamping mechanism to achieve radial and axial fastening. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the embodiment.

[0024] Figure 2 This is a schematic diagram of the axial clamping mechanism in the embodiment.

[0025] Figure 3 This is a schematic diagram of the locking mechanism and locking device in the embodiment.

[0026] Figure 4 This is a schematic diagram of the air inlet and hose in the embodiment.

[0027] Figure 5 This is a cross-sectional schematic diagram highlighting the internal structure of the air inlet and the sealing system in the embodiment.

[0028] Explanation of reference numerals in the attached drawings: 1. Buckle; 2. Circular pressure plate; 21. Air vent; 3. Axial clamping mechanism; 31. Fixing nut; 32. Locking nut; 33. Guide rod; 4. Locking mechanism; 41. First threaded mechanism; 42. First locking bolt; 43. First rotating rod; 5. Locking device; 51. Second threaded mechanism; 52. Second locking bolt; 53. Second rotating rod; 6. Air vent; 61. Interface body; 62. Sealing assembly; 63. One-way valve; 7. Sealing system; 71. Sealing base; 72. Elastic seal; 8. Pressure gauge interface; 9. Hoses; 91. Quick-release structure. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0030] This application discloses a cable inflation and pressurization device. (Refer to...) Figure 1 The system includes a retaining ring 1, a circular pressure plate 2, an axial clamping mechanism 3, a locking mechanism 4, a locking device 5, a sealing system 7, and a hose 9. One side of the axial clamping mechanism 3 is detachably connected to the retaining ring 1. The retaining ring 1 is evenly welded together with the locking mechanism 4 and the locking device 5, and the cable is locked by rotation. The other side of the axial clamping mechanism 3 is connected to the circular pressure plate 2. The circular pressure plate 2, through the cooperation between the axial clamping mechanism 3, the retaining ring 1, and the locking mechanism 4 and the locking device 5 on the retaining ring 1, forms the axial and radial positioning of the cable, solving the problem of insufficient axial positioning.

[0031] Reference Figure 2 The axial clamping mechanism 3 includes a fixing nut 31, a locking nut 32, and a guide rod 33. The guide rod 33 is threaded. Two fixing nuts 31 are installed on both sides of a hole evenly arranged circumferentially on the retaining ring 1 at one end of the guide rod 33. The two fixing nuts 31 are threadedly connected to the guide rod 33 and are installed on both sides of the retaining ring 1 to form a mechanical anti-loosening structure. The other end of the guide rod 33 is slidably connected to the corresponding hole of the circular pressure plate 2. The locking nut 32 is threadedly connected to the guide rod 33 on the outside of the circular pressure plate 2. By tightening the locking nut 32, the retaining ring 1 and the circular pressure plate 2 are controlled to meet the axial positioning requirements.

[0032] Reference Figure 3 and Figure 5 The locking mechanism 4 includes a first threaded mechanism 41, a first locking bolt 42, and a first rotating rod 43. The first threaded mechanism 41 is welded to the retaining ring 1, and the first locking bolt 42 is threadedly connected to the first threaded mechanism 41. The first rotating rod 43 controls the rotation of the first locking bolt 42. The locking device 5 includes a second threaded mechanism 51, a second locking bolt 52, and a second rotating rod 53. The second threaded mechanism 51 is welded to the retaining ring 1, and the second locking bolt 52 is threadedly connected to the second threaded mechanism 51. The second rotating rod 53 controls the rotation of the second locking bolt 52. Multiple locking devices 5 are provided. Multiple locking devices 5 cooperate with the locking mechanism 4 and then cooperate with the axial clamping mechanism 3 to form axial positioning and radial positioning. The sealing system 7 includes a sealing base 71 and an elastic sealing element 72. The sealing base 71 is connected between the inner side of the circular pressure plate 2 and the cable. The inner ring of the sealing base 71 cooperates with the cable. The elastic sealing element 72 is embedded in the inner ring of the sealing base 71 to enhance the sealing effect.

[0033] Reference Figure 4 and Figure 5 The air inlet 6 includes an inlet body 61, a sealing component 62, and a one-way valve 63. The air inlet 6 is welded to the air inlet hole 21 in the center of the circular pressure plate 2. The sealing component 62 is embedded in the inlet body 61 on the side near the air inlet hole 21. The one-way valve 63 is installed on the side of the sealing component 62 away from the air inlet hole 21. The one-way valve 63 is fixedly connected to the inside of the inlet body 61. The side of the air inlet 6 away from the air inlet hole 21 is provided with a thread and integrates a pressure gauge interface 8. A pressure gauge can be connected to monitor the air pressure in real time through the thread and the pressure gauge interface 8. The hose 9 is provided with a quick-release structure 91. The hose 9 can be quickly installed at the thread of the air inlet 6 through the quick-release structure 91, breaking through the position limitation of the air inlet 6.

[0034] The working principle of the cable inflation and pressurization device in this application is as follows: the retaining ring 1 and the circular pressure plate 2 are connected by an axial clamping mechanism 3. The fixing nut 31 of the axial clamping mechanism 3 is installed on both sides of the holes evenly distributed circumferentially in the retaining ring 1. The guide rod 33 is provided with threads. The fixing nut 31 is threaded to one end of the guide rod 33, and the retaining ring 1 forms a mechanical anti-loosening to fix one end of the guide rod 33. The other end of the guide rod 33 is slidably connected to the corresponding hole in the circular pressure plate 2. The locking nut 32, which is threaded to the guide rod 33, is installed on the outside of the corresponding hole in the circular pressure plate 2. The locking mechanism 4 and multiple locking devices are welded to the retaining ring 1. Position 5, the first locking bolt 42 is rotated by the first rotating rod 43, and the second locking bolt 52 is rotated by the second rotating rod 53 to fix it radially. The locking nut 32 of the axial clamping mechanism 3 is tightened to complete the axial and radial fixation. The sealing system 7 is installed between the circular pressure plate 2 and the cable to enhance the sealing effect. The air duct 6 is equipped with a sealing component 62 and a one-way valve 63 to prevent gas backflow. The integrated pressure gauge interface 8 and the side of the air duct interface 6 away from the air duct hole 21 are provided with threads for installing the pressure gauge. The hose 9 breaks through the position restriction of the air duct interface 6. The quick-release structure 91 quickly installs and removes the hose 9.

[0035] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cable inflation and pressurization device, characterized in that: The device includes a retaining ring (1), a circular pressure plate (2), an axial clamping mechanism (3), a locking mechanism (4), and an air guide port (6). The retaining ring (1) has multiple holes evenly distributed around its circumference, and the circular pressure plate (2) has multiple holes evenly distributed around its circumference. The multiple holes of the circular pressure plate (2) correspond to the multiple holes of the retaining ring (1). An air guide hole (21) is provided at the center of the circular pressure plate (2). The axial clamping mechanism (3) is evenly distributed around the retaining ring (1) and the circular pressure plate (2). The axial clamping mechanism (3) is slidably connected to the circular pressure plate (2). The retaining ring (1) and the axial clamping mechanism (3) are detachably connected. The locking mechanism (4) is installed on the retaining ring (1) and is fixedly connected to the retaining ring (1). The air guide port (6) is located outside the air guide hole (21) at the center of the circular pressure plate (2). The air guide port (6) is fixedly connected to the air guide hole (21).

2. The cable inflation and pressurization device according to claim 1, characterized in that: The axial clamping mechanism (3) includes a fixing nut (31), a locking nut (32), and a guide rod (33). The guide rod (33) is threaded and slidably connected to the circular pressure plate (2). The locking nut (32) is located outside the holes evenly distributed circumferentially on the circular pressure plate (2). The locking nut (32) is detachably connected to one end of the guide rod (33). The two fixing nuts (31) are located on both sides of the holes evenly distributed circumferentially on the buckle (1). The fixing nuts (31) are detachably connected to the other end of the guide rod (33).

3. The cable inflation and pressurization device according to claim 1, characterized in that: The locking mechanism (4) includes a first threaded mechanism (41), a first locking bolt (42), and a first rotating rod (43). The first threaded mechanism (41) is fixedly connected to the buckle (1). The first threaded mechanism (41) is slidably connected to one end of the first locking bolt (42). The first rotating rod (43) is fixedly connected to the other end of the first locking bolt (42). The first rotating rod (43) and the first locking bolt (42) are perpendicularly connected to each other.

4. The cable inflation and pressurization device according to claim 3, characterized in that: Multiple locking devices (5) are provided on the locking mechanism (4) along the circumference of the buckle (1). Each locking device (5) includes a second thread mechanism (51), a second locking bolt (52), and a second rotating rod (53). The locking devices (5) and the locking mechanism (4) are evenly distributed on the buckle (1) along the circumference, and the locking devices (5) are fixedly connected to the buckle (1).

5. The cable inflation and pressurization device according to claim 1, characterized in that: A sealing system (7) is provided at the connection between the circular pressure plate (2) and the cable. The sealing system (7) includes a sealing base (71) and an elastic sealing element (72). The sealing base (71) is annular and is fixed to the inner side of the circular pressure plate (2). The inner diameter of the sealing base (71) is adapted to the outer diameter of the target cable. The elastic sealing element (72) is embedded in the sealing base (71).

6. The cable inflation and pressurization device according to claim 1, characterized in that: The air inlet (6) includes an inlet body (61), a sealing component (62), and a one-way valve (63). One end of the inlet body (61) is installed on the air inlet hole (21) at the center of the outer side of the circular pressure plate (2). The inlet body (61) is fixedly connected to the air inlet hole (21) on the outer side of the circular pressure plate (2). The sealing component (62) is located inside the inlet body (61) near the position where it is connected to the circular pressure plate (2). The sealing component (62) is embedded inside the inlet body (61). The one-way valve (63) is installed inside the inlet body (61) on the side of the sealing component (62) away from the circular pressure plate (2). The one-way valve (63) is fixedly connected to the inlet body (61).

7. A cable inflation and pressurization device according to claim 6, characterized in that: It also includes a pressure gauge interface (8), which is located on the side of the air inlet (6) away from the air inlet (21). The pressure gauge interface (8) is integrated with the air inlet (6), and the outside of the pressure gauge interface (8) is provided with threads.

8. A cable inflation and pressurization device according to claim 6, characterized in that: A hose (9) is provided at the air inlet (6). The hose (9) is provided with a quick-release structure (91). The hose (9) can be directly connected to the pressure gauge inlet (8) through the quick-release structure (91). The hose (9) and the pressure gauge inlet (8) are detachably connected.

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