Wire and cable head quick sealing device and using method thereof

Abstract

The invention discloses an electric wire and cable head quick sealing device and a using method thereof.The device comprises a hot air gun, a hollow cylindrical cavity structure (composed of a cavity upper cover and a cavity lower cover), a rotary knob chuck, a fixing buckle, a connecting buckle, an air expansion cover and a thermal shrinkage sleeve, and the hot air gun is connected with the cavity structure through the fixing buckle and the connecting buckle; the air diffusion cover is used for uniformly diffusing hot air, the knob chuck is used for fixing the cable head, and the thermal shrinkable sleeve is located in the cavity and sleeves the cable head. The use method comprises the steps of equipment inspection, thermal shrinkage sleeve installation and fixation, hot air gun heating and time control, and thermal shrinkage effect inspection and adjustment. By optimizing the air diffusion cover and the fixing structure, uniform diffusion of hot air is achieved, local overheating is avoided, and the plugging efficiency and quality are improved; the expansion type quick-release fixing ring buckle improves the adaptability and the operation convenience of the device, the preset heating time and the segmented heating method ensure the consistency and the reliability of the thermal shrinkage effect, and the device is suitable for efficient plugging operation of cables of various specifications.

Description

Technical Field

[0001] The invention belongs to the technical field of electric wire and cable sealing, and in particular relates to an electric wire and cable head quick-sealing device and a use method thereof. Background Art

[0002] In the process of power transmission, the sealing of wires and cables is crucial. If the cable cutouts are not properly sealed during storage or transportation, foreign substances such as water and dust may enter the cable through the pipe openings, causing moisture and corrosion inside the cable, which in turn damages the insulation layer. This damage can lead to problems such as cable aging and short circuits, which can easily cause serious accidents such as fires and explosions. In addition, cable line failures can cause the power line to shut down, which not only affects production, but also causes huge economic losses to the power grid and even poses a safety threat to workers and the production environment.

[0003] At present, the plugging operation of wires and cables mainly relies on manual operation by workers, and commonly used tools include hot air guns and heat shrink tubing. However, there are many problems with traditional operation methods:

[0004] 1. Low operating efficiency: Workers need to hold a hot air gun for heating and sealing operations. The hot air is easy to dissipate and the heat shrink tubing cannot be heated evenly, resulting in long sealing time and low efficiency.

[0005] 2. High safety risk: Due to the hand-held hot air gun operation, the concentrated hot air of the hot air gun is easily over-concentrated in a certain position, which may cause burns to the workers or damage the external insulation layer of the wires and cables, posing a major safety hazard.

[0006] 3. Unstable sealing quality: The sealing effect depends largely on the skills and experience of the operator. Improper operation may lead to loose sealing, damage to the inside of the cable or premature aging of the insulation.

[0007] Therefore, the manual plugging method in the prior art has defects such as complex operation, low efficiency, poor safety and unstable quality. There is an urgent need for a tool that can simplify the operating process, improve efficiency and ensure plugging quality. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a wire and cable head quick-sealing device and a method for using the device, which can achieve uniform diffusion of hot air, avoid local overheating, improve sealing efficiency and quality, have good adaptability, be convenient to operate, and be safe and reliable.

[0009] The technical solution of the present invention is:

[0010] A quick-sealing device for electric wire and cable heads comprises: a hot air gun, a cavity upper cover, a knob chuck, a fixing ring buckle, a cavity lower cover, a connecting ring buckle, an air expansion hood and a heat shrink sleeve, wherein the cavity upper cover and the cavity lower cover are connected to form a hollow cylindrical cavity structure, one end of the hollow cylindrical cavity structure is fixedly connected to the air outlet of the hot air gun through the fixing ring buckle and the connecting ring buckle, the other end of the hollow cylindrical cavity structure is provided with a knob chuck, the knob chuck fixes the cable at the air outlet position of the hollow cylindrical cavity structure, the fixing ring buckle respectively covers the air expansion hood and the air outlet of the hot air gun, fixes the air expansion hood to the air outlet of the hot air gun, the fixing ring buckle and the air expansion hood are nested on the inner side of the cavity lower cover, the connecting ring buckle respectively covers the fixing ring buckle and the hollow cylindrical cavity structure, fixes the hollow cylindrical cavity structure to the air outlet of the hot air gun, and the heat shrink sleeve is located in the hollow cylindrical cavity structure and is sleeved with the cable head.

[0011] Furthermore, the cavity upper cover and the cavity lower cover are fixedly connected by screws.

[0012] Furthermore, the knob chuck is fixed between the cavity upper cover and the cavity lower cover by screws.

[0013] Furthermore, an elastic sealing ring is provided on the knob chuck.

[0014] Furthermore, the fixing ring buckle is a hoop structure and is fixedly connected to the air diffuser cover via a latch, and the connecting ring buckle is a hoop structure.

[0015] Furthermore, the air diffuser hood is a trumpet-shaped or bowl-shaped structure, and the opening angle of the air diffuser hood is 35 degrees.

[0016] Furthermore, a protective heat-insulating pad is provided at the connection between the hot air gun and the hollow cylindrical cavity structure.

[0017] Furthermore, the inner sides of the cavity upper cover and the cavity lower cover are covered with a high temperature resistant coating.

[0018] A method for using a quick-sealing device for electric wire and cable heads, comprising the following steps:

[0019] Step 1: Preparation, including the following steps:

[0020] S1. Check the equipment: Check whether the components of the quick-sealing device are intact: the hot air gun, the cavity upper cover, the knob chuck, the fixing ring, the cavity lower cover, the connecting ring, the air expansion cover and the heat shrink sleeve. Ensure that the hot air gun functions normally and can adjust the temperature and air volume.

[0021] S2. Select heat shrink sleeve: select heat shrink sleeve of appropriate specifications according to the diameter of the wire and cable head, and ensure that the heat shrink sleeve fits tightly with the cable head;

[0022] S3. Adjustment tool: According to the diameter of the cable head, rotate the knob chuck to adjust the opening size of the cavity air outlet to match the diameter of the cable head;

[0023] Step 2: Install the heat shrink sleeve and fix the cable head, including the following steps:

[0024] S4. Wrap the heat shrink sleeve: Put the heat shrink sleeve completely on the cable head, making sure that the heat shrink sleeve covers the part that needs to be sealed and leaves an appropriate margin;

[0025] S5. Insert the cable head: insert the cable head wrapped with the heat shrink sleeve into the hollow cylindrical cavity structure so that the top of the cable head is aligned with the cavity outlet;

[0026] S6. Fix the cable: Rotate the knob chuck to fix the cable at the air outlet of the hollow cylindrical cavity structure, check whether the cable is stable to prevent the cable from moving during heating;

[0027] Step 3, starting the heating device, including the following steps:

[0028] S7. Adjust the hot air gun: set the temperature and air volume of the hot air gun according to the material and specifications of the heat shrink sleeve;

[0029] S8. Connect the hot air gun: Connect the hot air gun to the fixing ring, and ensure that the air diffuser cover is firmly placed on the air outlet of the hot air gun;

[0030] S9. Start the hot air gun: Turn on the hot air gun and ensure that the hot air is evenly diffused into the cavity through the air expansion hood during the heating process to fully heat the heat shrink sleeve;

[0031] Step 4, uniformly heating the heat shrink sleeve, including the following steps:

[0032] S10, observe the heating process: observe whether the heat shrink sleeve is heated evenly through the transparent observation window provided on the cavity cover. If the cavity cover does not have a transparent observation window, estimate the uniform heating effect by the heating time;

[0033] S11. Avoid overheating: Keep the temperature of the heat gun constant to avoid local overheating that may damage the heat shrink sleeve or the cable head;

[0034] S12. Ensure complete shrinkage: Ensure that the heat shrink sleeve completely fits the cable head to form a tightly closed protective layer;

[0035] Step 5: Complete the plugging and remove the cable head, including the following steps:

[0036] S13, turn off the heat gun: after the heat shrink sleeve is completely shrunk, turn off the heat gun and wait for a few seconds to ensure that the hot air in the cavity gradually dissipates;

[0037] S14, release the fixation: rotate the knob chuck to loosen the cable;

[0038] S15. Take out the cable head: Carefully take out the sealed cable head from the hollow cylindrical cavity structure to avoid burns due to residual heat;

[0039] Step 6: Subsequent processing includes the following steps:

[0040] S16. Check the sealing quality: Check whether the heat shrink sleeve is tightly attached to the surface of the cable head, and whether there is incomplete shrinkage or loose sealing;

[0041] S17, tidying up the equipment: cleaning the air diffuser cover and the inside of the hollow cylindrical cavity structure, removing residual debris, and storing the components of the quick-sealing device in order to ensure that the equipment is neat and tidy;

[0042] S18. Record work: If important wire and cable heads are blocked, record the blocking time, equipment setting parameters and blocking quality for subsequent inspection.

[0043] Furthermore, the specific method steps for estimating the uniform heating effect by the heating time in step S10 are as follows:

[0044] (1) Preliminary testing and parameter determination, including the following steps:

[0045] (1.1) Check the heat shrink sleeve manual: Check the heating temperature, time range and other operating recommendations provided by the heat shrink sleeve manufacturer to determine the temperature and heating time range that are suitable for the current heat shrink sleeve;

[0046] (1.2) Setting experimental conditions: During the equipment trial operation, select a section of discarded or spare cable, cover it with a heat shrink sleeve of the same specifications as the actual operation, and use a hot air gun to set the appropriate temperature and air volume. The temperature and air volume should be set from a low temperature and gradually increased;

[0047] (1.3) Record time and effect: gradually increase the heating time, observe the shrinkage state and uniformity of the heat shrink sleeve, record the effect of each time period, and determine the best heating time for uniform shrinkage without overheating;

[0048] (2) A method for estimating the heating time comprises the following steps:

[0049] (2.1) Cable specification classification: According to the cable diameter and the wall thickness of the heat shrink sleeve, the cable heads are divided into three categories: small size: diameter ≤10mm, medium size: diameter 10-25mm, and large size: diameter ≥25mm;

[0050] (2.2) Basis for time calculation: Based on the preliminary test results, the recommended heating time range is set for each specification: 10-15 seconds for small specifications, 15-25 seconds for medium specifications, and 25-40 seconds for large specifications;

[0051] (2.3) Set the uniformity factor: According to the performance of the air hood and the air volume of the hot air gun, ensure that the hot air is evenly distributed in the hollow cylindrical cavity structure. Divide the estimated heating time into two stages: 70% of the time for the initial heating stage and 30% of the time for the correction stage. In the initial heating stage, heat steadily to ensure that the heat shrink sleeve begins to soften evenly as a whole; keep heating in the correction stage to ensure that the heat shrink sleeve is completely attached to the surface of the cable head;

[0052] (3) The actual operation method includes the following steps:

[0053] (3.1) Start heating: Turn on the hot air gun and set the preset temperature;

[0054] (3.2) Control time: Use timing equipment to accurately time, select the corresponding time interval according to the cable specifications, observe the stability of hot air diffusion during the initial heating stage, and ensure that the area covered by the air expansion hood is heated evenly;

[0055] (3.3) End heating: turn off the heat gun immediately after the preset time is reached to avoid damage to the heat shrink sleeve or excessive shrinkage caused by overheating;

[0056] (4) Inspection and adjustment, including the following steps:

[0057] (4.1) Check the heat shrink effect: Take out the cable head and check whether the heat shrink sleeve is completely shrunk and whether the surface is flat and smooth without bulges and wrinkles. If the heat shrink sleeve is not completely attached, extend the time by 3-5 seconds and reheat.

[0058] (4.2) Record parameters: Summarize the optimal heating time according to the cable heads of different specifications and form an experience table to facilitate subsequent quick operation.

[0059] Beneficial effects of the present invention:

[0060] 1. Significantly improve work efficiency:

[0061] The traditional manual plugging method takes a long time to plug due to the escape of hot air and uneven heating. However, the present invention uses the design of a trumpet-shaped or bowl-shaped air diffuser to evenly diffuse the hot air in the cavity, so that the heat shrink sleeve is evenly heated, which greatly shortens the plugging time. According to actual tests, the use of this tool can reduce the plugging time by about 30%-40%, greatly improving the working efficiency.

[0062] 2. Improve work safety:

[0063] The traditional hand-held hot air gun operation is prone to damage the outer insulation of the cable due to the hot air being concentrated in a single position, and even causes burns to the operator. The diffuse hot air design of the present invention avoids the safety hazard of clustered hot air, significantly reduces the incidence of burn accidents, and is safer and more reliable to operate.

[0064] 3. Stable plugging quality:

[0065] The present invention can make the hot air diffuse evenly, and the heat shrink sleeve is heated more evenly, ensuring that it can shrink evenly at a suitable temperature, and the sealing effect is consistent and reliable, avoiding the loose sealing or sealing failure caused by local overheating in the traditional method. According to actual tests, the sealing quality qualification rate is increased by 20%-30%, and the frequency and cost of later maintenance are effectively reduced;

[0066] 4. Save material costs:

[0067] The present invention can control the uniform shrinkage of the heat shrink sleeve, avoid material damage caused by uneven heating or improper operation, and thus reduce material waste. In actual tests, material loss is reduced by 15%-25%, saving operating costs for power companies.

[0068] 5. Strong applicability:

[0069] The fixing ring buckle and the connecting ring buckle of the present invention adopt an expansion type quick-release structure, which is suitable for most hot air guns on the market and has good versatility. At the same time, the quick sealing device can adapt to the plugging operation of cable heads of different specifications, has a wide range of applications, and meets the plugging needs in different scenarios in the power industry;

[0070] 6. Precise heating control:

[0071] The present invention establishes heating time parameters through preliminary testing, and is divided into two stages: preliminary heating and correction heating, to ensure that the heat shrink sleeve is evenly softened and fully fitted, avoiding overheating or insufficient heating;

[0072] 7. Controllability and consistency:

[0073] The present invention provides an accurate heating time control method, which combines time estimation and parameter recording to ensure the consistency of the plugging effect of each operation and facilitates the formation of a standardized operating procedure. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0075] Figure 1 It is a three-dimensional structural schematic diagram of a wire and cable head quick sealing device of the present invention.

[0076] Figure 2 The utility model is a planar structural schematic diagram of a wire and cable head quick sealing device of the present invention.

[0077] Figure 3 The utility model is a schematic diagram of the internal structure of a quick sealing device for wire and cable heads of the present invention.

[0078] In the figure: 1- hot air gun, 2- cavity upper cover, 3- knob chuck, 4- fixing ring buckle, 5- cavity lower cover, 6- cable, 7- connecting ring buckle, 8- air expansion cover, 9- heat shrink sleeve, 10- cable head. DETAILED DESCRIPTION

[0079] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0080] like Figure 1-3 As shown, a wire and cable head quick sealing device comprises: a hot air gun 1, a cavity upper cover 2, a knob chuck 3, a fixing ring buckle 4, a cavity lower cover 5, a connecting ring buckle 7, an air expansion cover 8 and a heat shrink sleeve 9, wherein the cavity upper cover 2 and the cavity lower cover 5 are connected to form a hollow cylindrical cavity structure, one end of the hollow cylindrical cavity structure is fixedly connected to the air outlet of the hot air gun 1 through the fixing ring buckle 4 and the connecting ring buckle 7, and the other end of the hollow cylindrical cavity structure is provided with a knob chuck 3, and the knob chuck 3 is The cable 6 is fixed at the air outlet position of the hollow cylindrical cavity structure, the fixing ring buckle 4 respectively covers the air expansion hood 8 and the air outlet of the hot air gun 1, and the air expansion hood 8 is fixed to the air outlet of the hot air gun 1. The fixing ring buckle 4 and the air expansion hood 8 are nested on the inner side of the cavity lower cover 5, and the connecting ring buckle 7 respectively covers the fixing ring buckle 4 and the hollow cylindrical cavity structure, and fixes the hollow cylindrical cavity structure to the air outlet of the hot air gun 1. The heat shrink sleeve 9 is located in the hollow cylindrical cavity structure and is sleeved with the cable head 10.

[0081] Preferably, the cavity upper cover 2 and the cavity lower cover 5 are fixedly connected by screws.

[0082] Preferably, the knob chuck 3 is fixed between the cavity upper cover 2 and the cavity lower cover 5 by screws.

[0083] Preferably, an elastic sealing ring is provided on the knob chuck 3 .

[0084] Preferably, the fixing ring buckle 4 is a hoop structure and is fixedly connected to the air diffuser hood 8 via a latch, and the connecting ring buckle 7 is a hoop structure.

[0085] Preferably, the air diffuser hood 8 is a trumpet-shaped or bowl-shaped structure, and the opening angle of the air diffuser hood 8 is 35 degrees.

[0086] Preferably, a protective heat-insulating pad is provided at the connection between the hot air gun 1 and the hollow cylindrical cavity structure.

[0087] Preferably, the inner sides of the cavity upper cover 2 and the cavity lower cover 5 are covered with a high temperature resistant coating.

[0088] A method for using a quick-sealing device for electric wire and cable heads, comprising the following steps:

[0089] Step 1: Preparation, including the following steps:

[0090] S1. Check the equipment: Check whether the components of the quick-sealing device: the hot air gun 1, the cavity upper cover 2, the knob chuck 3, the fixing ring 4, the cavity lower cover 5, the connecting ring 7, the air expansion cover 8 and the heat shrink sleeve 9 are intact and ensure that the hot air gun functions normally and can adjust the temperature and air volume;

[0091] S2. Select heat shrink sleeve: select heat shrink sleeve 9 of appropriate specifications according to the diameter of the wire and cable head, and ensure that the heat shrink sleeve 9 fits tightly with the cable head 10;

[0092] S3, adjusting the tool: according to the diameter of the cable head 10, rotating the knob chuck 3 to adjust the opening size of the cavity air outlet to match the diameter of the cable head 10;

[0093] Step 2: Install the heat shrink sleeve and fix the cable head, including the following steps:

[0094] S4, wrapping the heat shrink sleeve: completely wrap the heat shrink sleeve 9 on the cable head 10, ensuring that the heat shrink sleeve 9 covers the part to be sealed and leaves an appropriate margin;

[0095] S5, inserting the cable head: inserting the cable head 10 wrapped with the heat shrink sleeve 9 into the hollow cylindrical cavity structure, so that the top of the cable head 10 is aligned with the cavity outlet;

[0096] S6. Fix the cable: rotate the knob chuck 3 to fix the cable 6 at the air outlet of the hollow cylindrical cavity structure, and check whether the cable 6 is stable to prevent the cable 6 from moving during the heating process;

[0097] Step 3, starting the heating device, including the following steps:

[0098] S7, adjust the hot air gun: according to the material and specifications of the heat shrink sleeve 9, set the temperature and air volume of the hot air gun 1;

[0099] S8, connect the hot air gun: connect the hot air gun 1 to the fixing ring buckle 4, and ensure that the air expansion cover 8 is firmly covered on the air outlet of the hot air gun 1;

[0100] S9, start the hot air gun: turn on the hot air gun 1, and during the heating process, ensure that the hot air is evenly diffused into the cavity through the air expansion cover 8 to fully heat the heat shrink sleeve 9;

[0101] Step 4, uniformly heating the heat shrink sleeve, including the following steps:

[0102] S10, observe the heating process: observe whether the heat shrink sleeve 9 is heated evenly through the transparent observation window provided on the cavity cover 2. If the cavity cover 2 does not have a transparent observation window, estimate the uniform heating effect by the heating time;

[0103] S11, avoid overheating: keep the temperature of the hot air gun 1 constant to avoid local overheating that may cause damage to the heat shrink sleeve 9 or the cable head 10;

[0104] S12, ensuring complete shrinkage: ensuring that the heat shrink sleeve 9 completely fits the cable head 10 to form a tightly closed protective layer;

[0105] Step 5: Complete the plugging and remove the cable head, including the following steps:

[0106] S13, turn off the hot air gun: after the heat shrink sleeve 9 is completely shrunk, turn off the hot air gun 1 and wait for a few seconds to ensure that the hot air in the cavity gradually dissipates;

[0107] S14, releasing the fixation: rotating the knob chuck 3 to loosen the cable 6;

[0108] S15, taking out the cable head: carefully taking out the sealed cable head 10 from the hollow cylindrical cavity structure to avoid burns due to residual heat;

[0109] Step 6: Subsequent processing includes the following steps:

[0110] S16, check the sealing quality: check whether the heat shrink sleeve 9 is tightly attached to the surface of the cable head 10, and whether there is incomplete shrinkage or loose sealing;

[0111] S17, tidying up the equipment: cleaning the air diffuser 8 and the inside of the hollow cylindrical cavity structure, removing residual debris, and storing the components of the quick-sealing device in order to ensure that the equipment is neat and tidy;

[0112] S18. Record work: If important wire and cable heads are blocked, record the blocking time, equipment setting parameters and blocking quality for subsequent inspection.

[0113] Preferably, the specific method steps for estimating the uniform heating effect by the heating time in step S10 are as follows:

[0114] (1) Preliminary testing and parameter determination, including the following steps:

[0115] (1.1) Check the heat shrink sleeve manual: Check the heating temperature, time range and other operation suggestions provided by the heat shrink sleeve manufacturer to determine the temperature and heating time range suitable for the current heat shrink sleeve 9;

[0116] (1.2) Setting experimental conditions: During the equipment trial operation, select a section of discarded or spare cable, put on a heat shrink sleeve 9 of the same specifications as the actual operation, and use a hot air gun 1 to set the appropriate temperature and air volume. The temperature and air volume should be set from a low temperature and gradually increased;

[0117] (1.3) Recording time and effect: gradually increase the heating time, observe the shrinkage state and uniformity of the heat shrink sleeve 9, record the effect of each time period, and determine the best heating time for uniform shrinkage without overheating;

[0118] (2) A method for estimating the heating time comprises the following steps:

[0119] (2.1) Classification of cable specifications: According to the diameter of the cable 6 and the wall thickness of the heat shrink sleeve 9, the cable head 10 is divided into three categories: small specification: diameter ≤10mm, medium specification: diameter 10-25mm, and large specification: diameter ≥25mm;

[0120] (2.2) Basis for time calculation: Based on the preliminary test results, the recommended heating time range is set for each specification: 10-15 seconds for small specifications, 15-25 seconds for medium specifications, and 25-40 seconds for large specifications;

[0121] (2.3) Setting uniformity factor: according to the performance of the air diffuser 8 and the air volume of the hot air gun 1, ensure that the hot air is evenly distributed in the hollow cylindrical cavity structure, and divide the estimated heating time into two stages: a preliminary heating stage of 70% of the time and a correction stage of 30% of the time. In the preliminary heating stage, heat steadily to ensure that the heat shrink sleeve 9 begins to soften evenly as a whole; keep heating in the correction stage to ensure that the heat shrink sleeve 9 is completely attached to the surface of the cable head 10;

[0122] (3) The actual operation method includes the following steps:

[0123] (3.1) Start heating: turn on the hot air gun 1 and set the preset temperature;

[0124] (3.2) Control time: Use timing equipment to accurately time, select the corresponding time interval according to the cable specifications, observe the stability of hot air diffusion during the initial heating stage, and ensure that the area covered by the air expansion hood 8 is heated evenly;

[0125] (3.3) End of heating: turn off the heat gun 1 immediately after the preset time is reached to avoid damage to the heat shrink sleeve 9 or excessive shrinkage caused by overheating;

[0126] (4) Inspection and adjustment, including the following steps:

[0127] (4.1) Check the heat shrink effect: Take out the cable head 10, check whether the heat shrink sleeve 9 is completely shrunk, whether the surface is flat and smooth without bulges and wrinkles. If the heat shrink sleeve 9 is not completely attached, extend the time by 3-5 seconds and reheat;

[0128] (4.2) Record parameters: Summarize the optimal heating time according to the cable heads 10 of different specifications and form an experience table to facilitate subsequent quick operation.

[0129] It should be noted that: before use, ensure that the temperature and air volume set for the hot air gun 1 are suitable for the current operation. Avoid direct contact with the hollow cylindrical cavity structure and the air outlet of the hot air gun 1 during the heating process to prevent burns. If equipment failure is found during use (such as uneven hot air or loose parts), the operation should be stopped immediately and the equipment should be repaired. Proper ventilation should be carried out to ensure that the gas generated during the heating process is discharged in time to avoid excessively high working environment temperature or poor air circulation.

[0130] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-sealing device for electric wire and cable heads, characterized in that: include: A hot air gun (1), a cavity upper cover (2), a knob chuck (3), a fixing ring buckle (4), a cavity lower cover (5), a connecting ring buckle (7), an air diffuser (8) and a heat shrink sleeve (9), wherein the cavity upper cover (2) and the cavity lower cover (5) are connected to form a hollow cylindrical cavity structure, one end of the hollow cylindrical cavity structure is fixedly connected to the air outlet of the hot air gun (1) through the fixing ring buckle (4) and the connecting ring buckle (7), and the other end of the hollow cylindrical cavity structure is provided with a knob chuck (3), and the knob chuck (3) fixes the cable (6) in At the air outlet position of the hollow cylindrical cavity structure, the fixing ring buckle (4) respectively covers the air expansion cover (8) and the air outlet of the hot air gun (1), and fixes the air expansion cover (8) on the air outlet of the hot air gun (1); the fixing ring buckle (4) and the air expansion cover (8) are nested on the inner side of the cavity lower cover (5); the connecting ring buckle (7) respectively covers the fixing ring buckle (4) and the hollow cylindrical cavity structure, and fixes the hollow cylindrical cavity structure on the air outlet of the hot air gun (1); the heat shrink sleeve (9) is located in the hollow cylindrical cavity structure and is sleeved with the cable head (10).

2. A wire and cable head quick sealing device according to claim 1, characterized in that: The cavity upper cover (2) and the cavity lower cover (5) are fixedly connected by screws.

3. A wire and cable head quick sealing device according to claim 1, characterized in that: The knob chuck (3) is fixed between the cavity upper cover (2) and the cavity lower cover (5) by means of screws.

4. A wire and cable head quick sealing device according to claim 1, characterized in that: An elastic sealing ring is provided on the knob chuck (3).

5. A wire and cable head quick sealing device according to claim 1, characterized in that: The fixing ring buckle (4) is a hoop structure and is fixedly connected to the air diffuser cover (8) via a latch, and the connecting ring buckle (7) is a hoop structure.

6. A wire and cable head quick sealing device according to claim 1, characterized in that: The air diffuser cover (8) is a trumpet-shaped or bowl-shaped structure, and the opening angle of the air diffuser cover (8) is 35 degrees.

7. A wire and cable head quick sealing device according to claim 1, characterized in that: A protective heat-insulating pad is provided at the connection between the hot air gun (1) and the hollow cylindrical cavity structure.

8. The wire and cable head quick sealing device according to claim 1, characterized in that: The inner sides of the cavity upper cover (2) and the cavity lower cover (5) are covered with a high temperature resistant coating.

9. A method for using the wire and cable head quick sealing device according to claim 1, characterized in that: The following steps are involved: Step 1: Preparation, including the following steps: S1. Check the equipment: Check whether the components of the quick-sealing device, including the hot air gun (1), the cavity upper cover (2), the knob chuck (3), the fixing ring (4), the cavity lower cover (5), the connecting ring (7), the air diffuser (8) and the heat shrink sleeve (9), are intact and ensure that the hot air gun functions normally and can adjust the temperature and air volume; S2. Selecting a heat shrink sleeve: Selecting a heat shrink sleeve (9) of appropriate specifications according to the diameter of the wire and cable head, and ensuring that the heat shrink sleeve (9) and the cable head (10) fit tightly together; S3, adjusting the tool: according to the diameter of the cable head (10), rotating the knob chuck (3) to adjust the opening size of the cavity air outlet to match the diameter of the cable head (10); Step 2: Install the heat shrink sleeve and fix the cable head, including the following steps: S4. Wrapping the heat shrink sleeve: Wrap the heat shrink sleeve (9) completely on the cable head (10), ensuring that the heat shrink sleeve (9) covers the part to be sealed and leaves an appropriate margin; S5, inserting the cable head: inserting the cable head (10) wrapped with the heat shrink sleeve (9) into the hollow cylindrical cavity structure, so that the top end of the cable head (10) is aligned with the cavity outlet; S6. Fix the cable: rotate the knob chuck (3) to fix the cable (6) at the air outlet of the hollow cylindrical cavity structure, check whether the cable (6) is stable, and prevent the cable (6) from moving during the heating process; Step 3, starting the heating device, including the following steps: S7, adjusting the hot air gun: setting the temperature and air volume of the hot air gun (1) according to the material and specifications of the heat shrink sleeve (9); S8. Connect the hot air gun: Connect the hot air gun (1) to the fixing ring buckle (4), and ensure that the air diffuser (8) is firmly placed on the air outlet of the hot air gun (1); S9, start the hot air gun: turn on the hot air gun (1), and during the heating process, ensure that the hot air is evenly diffused into the cavity through the air expansion cover (8), so as to fully heat the heat shrink sleeve (9); Step 4, uniformly heating the heat shrink sleeve, including the following steps: S10, observing the heating process: observing whether the heat shrink sleeve (9) is heated evenly through a transparent observation window provided on the cavity upper cover (2); if the cavity upper cover (2) does not have a transparent observation window, estimating the uniform heating effect by the heating time; S11. Avoid overheating: Keep the temperature of the heat gun (1) constant to avoid local overheating that may damage the heat shrink sleeve (9) or the cable head (10); S12, ensuring complete shrinkage: ensuring that the heat shrink sleeve (9) completely fits the cable head (10) to form a tightly closed protective layer; Step 5: Complete the plugging and remove the cable head, including the following steps: S13, turn off the hot air gun: after the heat shrink sleeve (9) is completely shrunk, turn off the hot air gun (1) and wait for a few seconds to ensure that the hot air in the cavity gradually dissipates; S14, releasing the fixation: rotating the knob chuck (3) to release the cable (6); S15, taking out the cable head: carefully take out the sealed cable head (10) from the hollow cylindrical cavity structure to avoid burns due to residual heat; Step 6: Subsequent processing includes the following steps: S16. Check the sealing quality: Check whether the heat shrink sleeve (9) is tightly attached to the surface of the cable head (10), and whether there is any phenomenon of incomplete shrinkage or loose sealing; S17, tidying up the equipment: cleaning the air diffuser (8) and the interior of the hollow cylindrical cavity structure, removing any remaining debris, and storing the components of the quick-sealing device in order to ensure that the equipment is neat and tidy; S18. Record work: If important wire and cable heads are blocked, record the blocking time, equipment setting parameters and blocking quality for subsequent inspection.

10. The method for using the wire and cable head quick sealing device according to claim 9, characterized in that: The specific method steps of estimating the uniform heating effect by heating time in step S10 are as follows: (1) Preliminary testing and parameter determination, including the following steps: (1.1) Check the heat shrink sleeve manual: Check the heating temperature, time range and other operating recommendations provided by the heat shrink sleeve manufacturer to determine the temperature and heating time range that are suitable for the current heat shrink sleeve (9); (1.2) Setting experimental conditions: During the equipment trial operation, select a section of discarded or spare cable, cover it with a heat shrink sleeve (9) of the same specifications as in the actual operation, and use a hot air gun (1) to set the appropriate temperature and air volume. The temperature and air volume should be set from a low temperature and gradually increased; (1.3) Recording time and effect: gradually increase the heating time, observe the shrinkage state and uniformity of the heat shrink sleeve (9), record the effect of each time period, and determine the optimal heating time for uniform shrinkage without overheating; (2) A method for estimating the heating time includes the following steps: (2.1) Classification of cable specifications: According to the diameter of the cable (6) and the wall thickness of the heat shrink sleeve (9), the cable head (10) is divided into three categories: small specification: diameter ≤10mm, medium specification: diameter 10-25mm, and large specification: diameter ≥25mm; (2.2) Basis for time calculation: Based on the preliminary test results, the recommended heating time range is set for each specification: 10-15 seconds for small specifications, 15-25 seconds for medium specifications, and 25-40 seconds for large specifications; (2.3) Setting the uniformity factor: according to the performance of the air diffuser (8) and the air volume of the hot air gun (1), ensure that the hot air is evenly distributed in the hollow cylindrical cavity structure, and divide the estimated heating time into two stages: a preliminary heating stage of 70% of the time and a correction stage of 30% of the time. In the preliminary heating stage, heat steadily to ensure that the heat shrink sleeve (9) begins to soften evenly as a whole; in the correction stage, keep heating to ensure that the heat shrink sleeve (9) completely fits the surface of the cable head (10); (3) The actual operation method includes the following steps: (3.1) Start heating: turn on the heat gun (1) and set the preset temperature; (3.2) Control time: Use a timing device to accurately time, select the corresponding time interval according to the cable specifications, observe the stability of hot air diffusion during the initial heating stage, and ensure that the area covered by the air diffuser (8) is heated evenly; (3.3) End of heating: turn off the heat gun (1) immediately after the predetermined time is reached to prevent overheating from causing damage to the heat shrink sleeve (9) or excessive shrinkage; (4) Inspection and adjustment, including the following steps: (4.1) Check the heat shrink effect: Take out the cable head (10) and check whether the heat shrink sleeve (9) is completely shrunk and whether the surface is flat and smooth without bulges and wrinkles. If the heat shrink sleeve (9) is not completely attached, extend the time by 3-5 seconds and reheat. (4.2) Record parameters: Summarize the optimal heating time according to the cable heads (10) of different specifications and form an experience table to facilitate subsequent quick operation.

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