A new high-pressure air-tightness experimental device

Abstract

The utility model provides a novel high pressure air tightness experimental device, include: cable corrugated aluminium sheath, the cap body of welding in one end of cable corrugated aluminium sheath and one end is open, the cap body adopts aluminium material to constitute, the connecting pipe of fixed mounting in one end surface of cap body, and the gas transmission mechanism of detachable connection in one end for air tightness experiment of connecting pipe, through the screwing of tee -screw in connecting pipe, the pressure gauge and control valve are screwed in tee -screw end portion in proper order, then adopt argon arc welding to weld and fix the cap body and cable corrugated aluminium sheath, the gas pipe of external compression equipment and the port of control valve are connected, make gas delivery to cable corrugated aluminium sheath in -house through opening control valve and carry out experiment, and the air pressure is monitored in real time through pressure gauge, so through the aluminium cap body cooperation welding connection mode, compared with traditional mode structure is more stable and is not easy to deform and damage, effectively improved the work efficiency and effect of sealed experiment.

Description

Technical Field

[0001] This utility model relates to the field of cable aluminum sheath sealing technology, specifically to a novel high-pressure airtightness testing device. Background Technology

[0002] The cable sheath is the outermost layer of a cable, serving as the most important barrier protecting the internal structure and preventing mechanical damage during and after installation. As a crucial component of cable protection, the aluminum sheath possesses excellent corrosion resistance, electromagnetic shielding, and conductivity, playing a vital role in buried cables, submarine cables, and power transmission lines.

[0003] To test the sealing performance of high-voltage cable aluminum sheath welding under high-pressure gas environment and ensure no leakage in materials, welds, and other parts to meet safety and quality requirements, the current sealing method uses cable caps with inflation nozzles, which are sealed by heat shrinkage and sol-gel bonding. However, the existing cap sealing method, because the cap material is generally plastic, is prone to damage during heating and shrinkage deformation, causing the inflation nozzle to easily fall off. Furthermore, it is prone to bulging and leakage during pressurization, making pressure holding impossible. Inspection, replacement, and reinstallation are required, resulting in wasted time and materials, thus reducing the efficiency and effectiveness of the sealing test. Utility Model Content

[0004] This invention proposes a novel high-pressure airtightness testing device, which solves the problems in the existing related technologies where the sealing cap is easily damaged when it shrinks and deforms, causing the inflation nozzle to easily fall off, and the air leakage is easily caused by bulging during the pressurization process, resulting in waste of time and materials.

[0005] The technical solution of this utility model is as follows: A novel high-pressure airtightness test device, comprising: a cable corrugated aluminum sheath;

[0006] A cap body welded to one end of the corrugated aluminum sheath of the cable, with one end open, the cap body being made of aluminum;

[0007] A connecting pipe that is fixedly installed on one end face of the cap body;

[0008] And a gas delivery mechanism that can be detachably connected to one end of the connecting pipe for gas-tightness testing.

[0009] Preferably, the gas delivery mechanism includes a tee pipe with a sealed thread connection to one end of the connecting pipe, a pressure gauge with a sealed thread connection to the top of the tee pipe, and a control valve with a sealed thread connection to the side end of the tee pipe.

[0010] Preferably, the cap body is provided with a fixing mechanism for initially connecting it to the corrugated aluminum sheath of the cable.

[0011] Preferably, the fixing mechanism includes two support frames symmetrically fixedly installed on the surface of the cap body, a collar fixedly installed on the two support frames, and a clamping component provided on the collar.

[0012] Preferably, the clamping component includes two threaded sleeves symmetrically installed through the surface of the collar, a screw threadedly connected to the threaded sleeves, a rotating block fixedly connected to one end of the screw, an arc-shaped clamping plate rotatably connected to the other end of the screw, and a guide rod fixedly installed on the outer surface of the arc-shaped clamping plate and slidably connected to the collar.

[0013] Preferably, a limit block is fixedly connected to one end of the guide rod, and a rubber pad is fixedly installed on the inner surface of the arc-shaped clamp.

[0014] The working principle and beneficial effects of this utility model are as follows:

[0015] 1. By screwing a tee pipe onto the connecting pipe, and then screwing the pressure gauge and control valve onto the end of the tee pipe, the sealing cap and the corrugated aluminum sheath of the cable are welded and fixed using argon arc welding. The gas pipe of the external compression equipment is then connected to the port of the control valve. By opening the control valve, gas is delivered into the corrugated aluminum sheath of the cable for the experiment, and the gas pressure is monitored in real time using the pressure gauge. After the experiment is completed, the sealing cap can be cut off. Therefore, the aluminum sealing cap combined with the welding connection method results in a more stable structure that is less prone to deformation and damage compared to traditional methods, ensuring the stability of the experiment, reducing the frequency of secondary experiments, and allowing the device to be reused by cutting and welding, reducing material waste, saving costs, and effectively improving the efficiency and effectiveness of the sealing experiment.

[0016] 2. During the welding of the cap body, the collar is placed on the outside of the cable corrugated aluminum sheath. Then, the rotating block is turned to drive the screw to rotate, so that the screw and the threaded sleeve rotate together. At the same time, under the sliding limit action of the guide rod, the screw drives the arc-shaped clamping plate to move towards and contact the cable corrugated aluminum sheath, so that the arc-shaped clamping plates on both sides clamp the cable corrugated aluminum sheath, thus initially fixing the cap body to the cable corrugated aluminum sheath, so that subsequent personnel can weld it. There is no need for personnel to hold the cap body for welding operations, which helps to improve the convenience and safety of welding operations. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0019] Figure 2 This is a side view of the three-dimensional structure of the present invention;

[0020] Figure 3This is a partial three-dimensional structural diagram of the cap body of this utility model;

[0021] Figure 4 This is a partial three-dimensional structural diagram of the collar of this utility model;

[0022] In the diagram: 1. Corrugated aluminum sheath of cable; 2. Cap body; 3. Connecting pipe; 4. Tee pipe; 5. Pressure gauge; 6. Control valve; 7. Support frame; 8. Collar; 9. Threaded sleeve; 10. Screw; 11. Rotating block; 12. Arc-shaped clamp; 13. Guide rod; 14. Limiting block; 15. Rubber pad. Detailed Implementation

[0023] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0024] Please see Figure 1 - Figure 4 The present invention provides a novel high-pressure airtightness test device, comprising: a cable corrugated aluminum sheath 1;

[0025] A cap 2 is welded to one end of the cable's corrugated aluminum sheath 1 and is open at the other end. The cap 2 is made of aluminum.

[0026] A connecting pipe 3 is fixedly installed on one end face of the cap body 2, wherein the connecting pipe 3 is a four-point connector pipe;

[0027] And a gas delivery mechanism that can be detachably connected to one end of the connecting pipe 3 for gas-tightness testing.

[0028] The gas transmission mechanism includes a three-way pipe 4 with a sealed thread connection to one end of the connecting pipe 3, a pressure gauge 5 with a sealed thread connection to the top of the three-way pipe 4, and a control valve 6 with a sealed thread connection to the side end of the three-way pipe 4. The three-way pipe 4 is a 1 / 4-inch three-way pipe fitting, and the control valve 6 is a 1 / 4-inch ball valve.

[0029] The technical solution provided in this embodiment is as follows: In use, a seal is ensured by wrapping PTFE tape around the end of the connecting pipe 3, and the tee pipe 4 is threaded onto the connecting pipe 3. Then, the pressure gauge 5 and the control valve 6 are screwed onto the end of the tee pipe 4 in sequence with the PTFE tape. Next, the ends of the cap body 2 and the cable corrugated aluminum sheath 1 are joined together and welded together using argon arc welding. Subsequently, the gas pipe of the external compressed gas equipment is connected to the port of the control valve 6. By opening the control valve 6, high-pressure gas can be delivered to the cable corrugated aluminum sheath 1 through the tee pipe 4 and the connecting pipe 3 for the experiment. The pressure is monitored in real time by the pressure gauge 5. After the experiment is completed, the cap body 2 can be cut off. Therefore, the aluminum cap body 2 combined with the welding connection method is more stable and less prone to deformation and damage than the traditional method, ensuring the stability of the experiment, reducing the frequency of secondary experiments, and the device can be reused by cutting and welding, reducing material waste, saving costs, and effectively improving the working efficiency and effect of the sealing experiment.

[0030] Furthermore, the cap body 2 is provided with a fixing mechanism for initially connecting it to the cable corrugated aluminum sheath 1.

[0031] The fixing mechanism includes two support frames 7 symmetrically fixedly installed on the surface of the cap body 2, a collar 8 fixedly installed on the two support frames 7, and a clamping component provided on the collar 8.

[0032] The clamping components include two threaded sleeves 9 symmetrically mounted through the surface of the collar 8, a screw 10 threadedly connected inside the threaded sleeves 9, a rotating block 11 fixedly connected to one end of the screw 10, an arc-shaped clamping plate 12 rotatably connected to the other end of the screw 10, and a guide rod 13 fixedly mounted on the outer surface of the arc-shaped clamping plate 12 and slidably connected to the collar 8.

[0033] Specifically, during the welding of the cap body 2, the cap body 2 is connected to the cable corrugated aluminum sheath 1, and the collar 8 is placed on the outside of the cable corrugated aluminum sheath 1. Then, the rotating block 11 is turned to drive the screw 10 to rotate, so that the screw 10 and the threaded sleeve 9 rotate together. At the same time, under the sliding limit action of the guide rod 13, the screw 10 drives the arc-shaped clamp 12 to move towards and contact the cable corrugated aluminum sheath 1, so that the arc-shaped clamp 12 on both sides clamps the cable corrugated aluminum sheath 1, thus initially fixing the cap body 2 and the cable corrugated aluminum sheath 1, so that subsequent personnel can weld it without the need for personnel to hold the cap body 2 for welding operations, which is beneficial to improving the convenience and safety of welding operations. When cutting the cap body 2 at the end of the experiment, the arc-shaped clamp 12 is separated from the cable corrugated aluminum sheath 1. Since there is a certain distance between the support frame 7 and the cable corrugated aluminum sheath 1, it will not affect the normal cutting or the cutting of the support frame 7 together.

[0034] Furthermore, a limit block 14 is fixedly connected to one end of the guide rod 13, and a rubber pad 15 is fixedly installed on the inner surface of the arc-shaped clamp 12.

[0035] Specifically, by setting the limit block 14, the movement range of the guide rod 13 can be limited to prevent the guide rod 13 from detaching from the collar 8. By setting the rubber pad 15, the clamping force of the arc-shaped clamping plate 12 can be buffered to avoid excessive clamping force causing squeezing deformation and damage to the cable wrinkled aluminum sheath 1.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A novel high-pressure airtightness experimental device, characterized in that, include: Corrugated aluminum sheath for cable (1); A cap (2) is welded to one end of the cable corrugated aluminum sheath (1) and the other end is open. The cap (2) is made of aluminum. A connecting pipe (3) is fixedly installed on one end face of the cap body (2); And a gas delivery mechanism that can be detachably connected to one end of the connecting pipe (3) for gas-tightness testing.

2. The novel high-pressure airtightness experimental device according to claim 1, characterized in that, The gas delivery mechanism includes a three-way pipe (4) with a sealed thread connected to one end of the connecting pipe (3), a pressure gauge (5) with a sealed thread connected to the top of the three-way pipe (4), and a control valve (6) with a sealed thread connected to the side end of the three-way pipe (4).

3. The novel high-pressure airtightness experimental device according to claim 1, characterized in that, The cap body (2) is provided with a fixing mechanism for initially connecting it to the cable corrugated aluminum sheath (1).

4. The novel high-pressure airtightness test device according to claim 3, characterized in that, The fixing mechanism includes two support frames (7) symmetrically fixedly installed on the surface of the cap body (2), a collar (8) fixedly installed on the two support frames (7), and a clamping component provided on the collar (8).

5. A novel high-pressure airtightness testing device according to claim 4, characterized in that, The clamping component includes two threaded sleeves (9) symmetrically installed through the surface of the collar (8), a screw (10) threadedly connected inside the threaded sleeves (9), a rotating block (11) fixedly connected to one end of the screw (10), an arc-shaped clamping plate (12) rotatably connected to the other end of the screw (10), and a guide rod (13) fixedly installed on the outer surface of the arc-shaped clamping plate (12) and slidably connected to the collar (8).

6. The novel high-pressure airtightness experimental device according to claim 5, characterized in that, One end of the guide rod (13) is fixedly connected to a limit block (14), and a rubber pad (15) is fixedly installed on the inner surface of the arc-shaped clamp (12).

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