A heating device for heat-shrinkable sleeve for pipeline anticorrosion

Abstract

The utility model discloses a kind of hot shrink sleeve heating devices for pipeline anticorrosion, it is related to pipeline hot shrink anticorrosion technical field, including cross bar, fixed mechanism, electric sliding rail, electric telescopic rod and heating mechanism;The cross bar is horizontally arranged, and the front and rear ends of cross bar are connected with a set of fixed mechanism respectively, the fixed mechanism is composed of U-shaped frame, clamping plate, screw rod, handle and fastening nut;The bottom of cross bar is equipped with electric sliding rail, and the slider of electric sliding rail is connected with the electric telescopic rod vertically arranged, and the bottom end of electric telescopic rod is connected with heating mechanism;Electric sliding rail and electric telescopic rod drive heating mechanism to move automatically, replace artificial hand-held high-temperature tool, and operator does not need to directly contact heating area, and completely avoids scald, gas leakage and open fire ignition risk.

Description

Technical Field

[0001] This utility model relates to the field of heat shrinkable anti-corrosion technology for pipelines, specifically to a heating device for heat shrinkable sleeves used in pipeline anti-corrosion. Background Technology

[0002] In pipeline engineering, heat shrink sleeves are key materials for achieving pipeline corrosion protection and sealing. Their core applications include corrosion protection of welded joints of buried and overhead steel pipelines, insulation repair of insulated pipelines, and sealing and corrosion protection of pipeline flange connections to extend pipeline service life and prevent media leakage or intrusion of external corrosive media.

[0003] In existing technology, the installation process of heat shrink sleeves is as follows: First, the prefabricated heat shrink sleeve is placed on the target location such as the pipe weld or repair joint. Then, a handheld heating tool, such as a hot air gun or blowtorch, is used to heat the surface of the heat shrink sleeve, causing it to shrink and adhere tightly to the outer wall of the pipe through the molten adhesive inside. However, this manual heating method has obvious drawbacks: High operational risks: Both hot air guns and flame guns are high-temperature operating tools. When operated manually, hand tremors, tool malfunctions, or operational errors can cause the high-temperature airflow or flame to come into direct contact with the operator, resulting in burns. At the same time, there is also a risk of gas leakage and open flame igniting of surrounding flammable materials during the use of flame guns.

[0004] Uniform heating is difficult to guarantee: The shrinkage effect of the heat shrink sleeve and the adhesion quality to the pipe depend on the consistency of the heating temperature in different areas of the surface. The uniformity of heating depends entirely on the operator's skill level, such as the speed of the hand tool movement and the distance control between the operator and the heat shrink sleeve. If the local heating temperature is too high, it can easily lead to aging and damage of the heat shrink sleeve; if the local heating temperature is too low, the heat shrink sleeve will not shrink sufficiently, the adhesive will not melt completely, and an effective seal cannot be formed, ultimately affecting the anti-corrosion effect.

[0005] Therefore, there is an urgent need for a heat shrink sleeve heating device that can reduce operational risks and ensure heating uniformity, in order to solve the technical pain points of existing manual heating methods. Utility Model Content

[0006] This invention aims to overcome the shortcomings of existing technologies, such as the high operational risks, reliance on manual heating for heat shrink sleeves, and difficulty in ensuring uniform heating when using handheld heating tools. It provides a heating device for heat shrink sleeves used in pipeline corrosion protection, enabling safe and uniform heating of heat shrink sleeves and improving the quality and efficiency of pipeline corrosion protection operations.

[0007] The technical solution adopted by this utility model to solve its technical problem is: a heating device for heat shrink sleeves for pipeline corrosion protection, including a crossbar, a fixing mechanism, an electric slide rail, an electric telescopic rod, and a heating mechanism; the crossbar is horizontally arranged, and a set of fixing mechanisms is connected to each of the front and rear ends of the crossbar. The fixing mechanism consists of a U-shaped frame, clamps, a screw, a handle, and fastening nuts. The opening of the U-shaped frame faces downward, and the top center of the U-shaped frame is connected to the bottom of the crossbar. Two symmetrically distributed clamps are provided inside the U-shaped frame. One end of the screw is connected to the outer side of the clamps, and the other end of the screw extends through a through hole on the side of the U-shaped frame to the outside of the U-shaped frame. The end of the screw located on the outside of the U-shaped frame is connected to the handle, and two fastening nuts are installed on the screw. Fastening nuts are respectively fitted onto the screws on the inner and outer sides of the U-shaped frame. When the two fastening bolts are tightened and pressed tightly against the inner and outer walls of the U-shaped frame, the position of the screws can be fixed. An electric slide rail is installed at the bottom of the crossbar. The slider of the electric slide rail is connected to a vertically set electric telescopic rod. The bottom end of the electric telescopic rod is connected to a heating mechanism. The heating mechanism consists of an upper bracket, a lower bracket, a heat insulation plate, and heating wires. The upper and lower brackets are both semi-circular brackets. The upper and lower brackets can be detachably connected to form a circular bracket. The top center of the upper bracket is connected to the bottom end of the electric telescopic rod. The interior of the upper and lower brackets is connected to a semi-circular heat insulation plate through a connecting rod. The heating wires are laid on the side of the heat insulation plate facing the center of the circular bracket.

[0008] Furthermore, the clamping plate is an arc-shaped plate, and the curvature of the arc-shaped plate is adapted to the curvature of the outer wall of the pipe, which can increase the contact area between the clamping plate and the pipe, improve the clamping stability, and prevent the device from shifting during the heating process.

[0009] Furthermore, the control switch for the heating wire is mounted on the crossbar and is electrically connected to the heating wire. When energized, the temperature of the heating wire rises to heat the heat shrink sleeve. This allows the operator to directly control the power supply to the heating wire after fixing the device, without needing to approach the heating area, thus improving operational safety.

[0010] Furthermore, the upper and lower supports are available in various diameter models, and the upper and lower supports of different diameter models can be combined to form circular supports with different inner diameters to meet the needs of pipes of different diameters.

[0011] Furthermore, the slider travel range of the electric slide rail is adapted to the length range of the heat shrink sleeve, and the slider drives the heating mechanism to reciprocate along the length direction of the heat shrink sleeve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This device is fixed to the pipeline by a fixing mechanism. The electric slide rail and electric telescopic rod drive the heating mechanism to move automatically, replacing the manual handling of high-temperature tools. Operators do not need to directly contact the heating area, thus completely avoiding the risks of burns, gas leaks and open flame ignition. (2) The heating mechanism is formed into a circular structure by combining the upper and lower brackets. The heat insulation plate and the heating wire cover the heat shrink sleeve 360 ​​degrees. The electric slide rail drives the heating mechanism to move back and forth at a constant speed along the length of the heat shrink sleeve. At the same time, the electric telescopic rod can precisely adjust the gap between the heating wire and the heat shrink sleeve to ensure that the heating temperature of each area of ​​the heat shrink sleeve is consistent, avoid local overheating or insufficient heating, and ensure the shrinkage quality and anti-corrosion effect of the heat shrink sleeve. (3) The upper and lower supports are available in various diameter models to accommodate pipes of different specifications. There is no need to design heating devices separately for different pipes, thus reducing operating costs. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the heating mechanism.

[0015] The diagram shows: 1. Crossbar, 2. Electric slide rail, 3. Electric telescopic rod, 4. U-shaped frame, 5. Clamping plate, 6. Screw, 7. Handle, 8. Fastening nut, 9. Upper bracket, 10. Lower bracket, 11. Heat insulation plate, 12. Heating wire. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0017] Reference Figure 1-2This embodiment provides a heating device for heat shrink sleeves used in pipeline corrosion protection, including a crossbar 1, a fixing mechanism, an electric slide rail 2, an electric telescopic rod 3, and a heating mechanism. The crossbar 1 is horizontally arranged, and a fixing mechanism is connected to each of its front and rear ends for fixing the entire device to the pipeline. The fixing mechanism consists of a U-shaped frame 4, clamping plates 5, screws 6, a handle 7, and fastening nuts 8. The opening of the U-shaped frame 4 faces downward, and the top center of the U-shaped frame 4 is bolted to the bottom of the crossbar 1. The interior of the U-shaped frame 4 has two symmetrically distributed clamping plates 5 for clamping the pipe. The outer wall of the pipe; one end of the screw rod 6 is fixedly connected to the outer side of the clamping plate 5, and the other end of the screw rod 6 extends through the through hole on the side of the U-shaped frame 4 to the outside of the U-shaped frame 4. The end of the screw rod 6 located on the outside of the U-shaped frame is connected to the handle 7, which makes it convenient for the operator to move the screw rod 6 to adjust the position of the clamping plate 5; two fastening nuts 7 are installed on the screw rod 6, and the two fastening nuts 7 are respectively sleeved on the screw rod 7 on the inner and outer sides of the U-shaped frame 4. When the two fastening nuts 7 are tightened to make them fit tightly against the inner and outer walls of the U-shaped frame, the axial position of the screw rod 6 is locked, thereby fixing the clamping state of the clamping plate 5 and the pipe.

[0018] The bottom of the crossbar 1 is bolted to the electric slide rail 2. The slider of the electric slide rail 2 is bolted to the top of the vertically set electric telescopic rod 3. The bottom of the electric telescopic rod 3 is connected to the heating mechanism. The electric telescopic rod 3 can extend and retract in the vertical direction to adjust the distance between the heating mechanism and the heat shrink sleeve.

[0019] The heating mechanism consists of an upper support 9, a lower support 10, a heat insulation plate 11, and a heating wire 12. The upper support 9 and the lower support 10 are both semi-circular ring supports, and the upper support 9 and the lower support 10 are detachably connected to form a circular support by bolts. The bottom end of the electric telescopic rod 3 is connected to the center of the top of the upper support 9 by bolts. The interior of the upper support 9 and the lower support 10 are each connected to a semi-circular heat insulation plate 11 by connecting rods. The heating wire 12 is laid on the side of the heat insulation plate 11 facing the center of the circular support. When the heating wire is energized, it generates heat to heat the heat shrink sleeve. The heat insulation plate 11 can prevent the heat of the heating wire from being directly lost, and at the same time prevent the heat from being transferred to the support and causing the support to overheat and be damaged.

[0020] In this embodiment, the clamping plate 5 is an arc-shaped plate. The curvature of the arc-shaped plate is adapted to the curvature of the outer wall of the pipe, which can increase the contact area between the clamping plate 5 and the pipe, improve the clamping stability, and prevent the device from shifting during the heating process.

[0021] In this embodiment, the control switch of the heating wire 12 is set on the crossbar. The control switch is electrically connected to the heating wire 12. After being powered on, the temperature of the heating wire rises to heat the heat shrink sleeve. This allows the operator to directly control the power supply of the heating wire after fixing the device, without having to get close to the heating area, thus improving operational safety.

[0022] In this embodiment, the upper support 9 and the lower support 10 have various models with different diameters. The upper support 9 and the lower support 10 with different diameters can be combined to form circular supports with different inner diameters to meet the needs of pipes with different diameters. The appropriate support can be selected according to the diameter of the pipe to be heated, so that the heat insulation plate and the surface of the heat shrink sleeve maintain a uniform gap, ensuring that the heat shrink sleeves of pipes with different diameters can be heated evenly, thus improving the versatility of the device.

[0023] The method of using this device is as follows: (1) Select the appropriate upper bracket 9 and lower bracket 10 according to the diameter of the pipe to be heated; check the status of each component: the electric slide 2 and the electric telescopic rod 3 have normal extension and movement functions, the heating wire 12 heats up evenly after being powered on, and the fastening nut 8 has no stripping phenomenon.

[0024] (2) Place the prefabricated heat shrink sleeve onto the weld or repair joint of the pipe, ensuring that the heat shrink sleeve is centered and without deviation.

[0025] (3) Separate the upper support 9 and lower support 10 of the heating mechanism and place the whole device above the pipe; for the front and rear fixed mechanisms, loosen their fastening nuts 8 respectively, hold the handle 7 and drive the screw 6 to move along the through hole on the side of the U-shaped frame 4, so that the two arc-shaped clamps 5 respectively fit against the outer wall of the pipe on the front and rear sides of the heat shrink sleeve, and ensure the overall stability of the device; then tighten the fastening nuts 8 so that they fit tightly against the inner and outer walls of the U-shaped frame 4, lock the position of the screw 6, and complete the device fixation; at this time, it is necessary to ensure that the sliding stroke area of ​​the electric slide rail 2 completely covers the length range of the heat shrink sleeve.

[0026] (4) Start the electric telescopic rod 3 and control it to extend and retract vertically downwards, driving the upper bracket 9 to move down until the gap between the heat insulation plate 11 on the inner side of the upper bracket 9 and the surface of the upper half of the heat shrink sleeve is maintained at 5-10mm. This gap can be finely adjusted according to the thickness of the heat shrink sleeve to ensure efficient heat transfer and prevent the heat shrink sleeve from being burned. Move the lower bracket 10 from below the heat shrink sleeve upwards and connect it to the upper bracket 9 detachably with bolts. At the same time, adjust the position of the lower bracket 10 so that the gap between the heat insulation plate 11 on the inner side of the lower bracket 10 and the surface of the lower half of the heat shrink sleeve is also maintained at 5-10mm. At this time, the circular bracket formed by the combination of the upper and lower brackets drives the heat insulation plate 11 and the heating wire 12 to wrap the heat shrink sleeve in a 360-degree manner.

[0027] (5) The operator presses the heating wire control switch on the crossbar 1 to energize the heating wire 12 and heat it up; then the electric slide rail 2 is started and its slider is controlled to move back and forth along the length of the crossbar (i.e. the length of the heat shrink sleeve) at a speed of 5-10 cm / min. The slider drives the electric telescopic rod 3 to move synchronously with the heating mechanism. During the heating process, the heating effect can be judged by observing the shrinkage state of the heat shrink sleeve (such as the heat shrink sleeve tightly adhering to the pipe, without bubbles or wrinkles). After the heat shrink sleeve is completely shrunk and tightly adhered to the pipe, the heating wire control switch is turned off first. After the heating wire cools down, the bracket 10 is removed, the fastening nut 8 of the fixing mechanism is loosened, and the entire device is removed to complete the heating operation.

[0028] Of course, the above description is not limited to the examples above. Technical features not described in this utility model can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A heating device for heat shrink sleeves used in pipeline corrosion protection, characterized in that, It includes a crossbar (1), a fixing mechanism, an electric slide rail (2), an electric telescopic rod (3), and a heating mechanism; the crossbar (1) is horizontally set, and a set of fixing mechanisms is connected to the front and rear ends of the crossbar (1). The fixing mechanism consists of a U-shaped frame (4), a clamping plate (5), a screw (6), a handle (7), and fastening nuts (8). The opening of the U-shaped frame (4) faces downward, and the top center of the U-shaped frame (4) is connected to the bottom of the crossbar (1). The U-shaped frame (4) has two symmetrically distributed clamping plates (5) inside. The outer side of the clamping plate (5) is connected to one end of the screw (6). The other end of the screw (6) extends through the through hole on the side of the U-shaped frame (4) to the outside of the U-shaped frame (4). The end of the screw (6) located on the outside of the U-shaped frame (4) is connected to the handle (7). Two fastening nuts (8) are installed on the screw (6). 8) The screws (6) are respectively fitted on the inner and outer sides of the U-shaped frame (4); the bottom of the crossbar (1) is equipped with an electric slide rail (2), the slider of the electric slide rail (2) is connected to the vertically set electric telescopic rod (3), and the bottom end of the electric telescopic rod (3) is connected to the heating mechanism; the heating mechanism consists of an upper bracket (9), a lower bracket (10), a heat insulation plate (11) and an electric heating wire (12); the upper bracket (9) and the lower bracket (10) are both semi-circular brackets, and the upper bracket (9) and the lower bracket (10) can be detachably connected to form a circular bracket, and the top center of the upper bracket (9) is connected to the bottom end of the electric telescopic rod (3); the interior of the upper bracket (9) and the lower bracket (10) are each connected to a semi-circular heat insulation plate (11) through a connecting rod, and the heat insulation plate (11) is covered with an electric heating wire (12) on the side facing the center of the circular bracket.

2. The heating device for heat shrink sleeves used in pipeline corrosion protection according to claim 1, characterized in that, The clamp (5) is an arc-shaped plate.

3. The heating device for heat shrink sleeves used in pipeline corrosion protection according to claim 1, characterized in that, The control switch of the heating wire (12) is set on the crossbar (1) and is electrically connected to the heating wire (12).

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