Middle electricity-saving hot melting sleeve connecting device for outer protective pipe of thermal insulation pipe elbow

Abstract

The utility model discloses a middle electricity-saving hot melting sleeve connecting device for an outer protective pipe of a thermal insulation pipe elbow, which belongs to the technical field of electric hot melting sleeve connecting devices and comprises an electric hot melting sleeve mounted on a thermal insulation pipe, and an electric heating wire is mounted in the electric hot melting sleeve. The electric hot melting sleeve is sleeved with two sets of fixing mechanisms. Through the spiral channel and the resistance wire, when heating is needed, the resistance wire can be plugged into the spiral channel and pulled out after heating is completed, the resistance wire can be repeatedly used, waste is avoided, and meanwhile the heating wire in the electric hot melting sleeve can be prevented from being broken in the transportation process.

Description

Technical Field

[0001] The utility model relates to the technical field of electric heat-melting sleeve connection devices, in particular to an electric heat-melting sleeve connection device for an intermediate section of an outer protective pipe of an insulation pipe elbow. Background Art

[0002] In traditional insulated pipe systems, especially for elbow connections, problems such as loose connections or poor insulation due to pipe bending and stress concentration are often encountered. Especially in some environments where stable temperature needs to be maintained, if the joints of the insulated pipe cannot be effectively sealed, heat loss will occur, and may even affect the thermal efficiency and service life of the entire system.

[0003] Currently, the main connection method is electric heat fusion sleeve connection. The electric heat fusion sleeve heats the molten material between the pipe and the sleeve to melt, thereby achieving the effect of connection and sealing. However, the existing electric heat fusion sleeve connection method still has some problems, such as the connection is not tight enough and the heating wire inside the electric heat fusion sleeve is easy to break during transportation.

[0004] Therefore, it is urgent to provide an electric hot-melt sleeve connection device for the middle section of the outer protective pipe of the insulation pipe elbow to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the disadvantages of the prior art and provide an electric hot-melt sleeve connection device for the middle section of the outer protective pipe of the elbow of the insulation pipe.

[0006] In order to solve the above technical problems, the present invention adopts a technical solution: providing an electric heat-melting sleeve connecting device for the middle section of the outer protective pipe of the elbow of the insulation pipe, comprising an electric heat-melting sleeve installed on the insulation pipe, and an electric heating wire installed inside the electric heat-melting sleeve;

[0007] The outside of the electric hot melt sleeve is sleeved with two sets of fixing mechanisms.

[0008] The utility model is further configured as follows: the electric heating sleeve comprises an electric heating sleeve body fixed on the insulation pipe, spiral through holes are opened on both sides of the electric heating sleeve body, and cylindrical particles are evenly distributed on both sides of the interior of the electric heating sleeve body.

[0009] Through this technical solution, the heating jacket body is heated by an external power source, causing the cylindrical particles inside the jacket body to melt. These particles then melt evenly through heat conduction and convection and penetrate the surface of the insulation tube, forming a tight fusion connection between the insulation tube and the heating jacket.

[0010] The utility model is further configured such that the length of the cylindrical particles distribution is consistent with the spiral through hole.

[0011] Through the above technical solution, the distribution of cylindrical particles matches the shape and length of the spiral through-hole, which helps to optimize the heating and welding process and ensure the uniformity and stability of the connection.

[0012] The utility model is further configured as follows: the electric heating wire comprises resistance wires installed in two groups of spiral through holes, and a plurality of connectors are installed on the two groups of resistance wires.

[0013] Through the above technical solution, the external power supply allows current to flow in the resistance wire through the connector. Since the resistance wire has a certain resistance value, Joule heat will be generated, which will increase the temperature of the resistance wire and thus realize heat output, thereby melting both sides of the electric heating sleeve and making it tightly connected to the insulation pipe.

[0014] The utility model is further configured as follows: the two groups of resistance wires are made of nickel-chromium alloy.

[0015] Through the above technical solution, a stable oxide film is formed on the surface of the nickel-chromium alloy. This oxide film can effectively protect the alloy from further oxidation, thereby increasing its service life. The formation of the oxide layer enables the resistance wire to still work stably at high temperatures and is not easily corroded.

[0016] The utility model is further configured as follows: the fixing mechanism comprises a fixing lock body sleeved on the outside of the electric heating jacket body, a threaded column is rotatably mounted on the fixing lock body, and two fixing bolts are rotatably mounted on the threaded column.

[0017] Through the above technical solution, the threaded column installed on the fixing lock body plays the role of connection and support. The position of the threaded column is adjusted by rotating the threaded column. When the threaded column is in place, the two fixing bolts fix the threaded column, thereby achieving the fixing effect of the electric heating jacket body. In this way, it can not only ensure that the fixing lock body of the electric heating jacket body is firmly fixed and not loose during operation, but also can be fine-tuned as needed to adapt to different usage conditions or installation requirements.

[0018] The utility model is further configured as follows: an internal thread groove corresponding to the threaded column is provided on the fixed lock body.

[0019] Through the above technical solution, when the threaded column is screwed into the internal thread groove of the fixed lock body, a tight connection is formed between the threaded column and the internal thread groove. This process can achieve a firm connection between the fixed lock body and the threaded column through the mutual engagement of the threads, ensuring the stability and firmness between the two.

[0020] The utility model is further configured as follows: a rubber pad is provided on the contact surface between the fixing lock body and the electric heating sleeve body.

[0021] Through the above technical solution, the rubber pad can prevent the fixing lock body from damaging the electric heating sleeve body.

[0022] The beneficial effects of the utility model are as follows:

[0023] 1. The utility model is designed with cylindrical particles. When the electric heating sleeve is heated, the cylindrical particles will melt evenly and penetrate into the surface of the insulation pipe through heat conduction and convection, so that a tight fusion connection is formed between the insulation pipe and the main body of the electric heating sleeve.

[0024] 2. The utility model uses a spiral channel and a resistance wire. When heating is required, the resistance wire can be inserted into the spiral channel and pulled out after heating is completed. It can be reused to avoid waste and can also prevent the internal heating wire of the electric heating sleeve from breaking during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the utility model;

[0026] Figure 2 This is the main view of the utility model;

[0027] Figure 3 It is a left view of the utility model;

[0028] Figure 4 for Figure 2 Middle AA section view;

[0029] Figure 5 for Figure 4 A partial enlarged view of point A in the middle.

[0030] In the figure: 1. Insulation tube; 2. Electric heating sleeve; 201. Electric heating sleeve body; 202. Spiral through hole; 203. Cylindrical particles; 3. Electric heating wire; 301. Resistance wire; 302. Connector; 4. Fixing mechanism; 401. Fixing lock body; 402. Threaded column; 403. Fixing bolt. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0032] See also Figure 1-Figure 5A device for connecting an outer protective tube of an insulated pipe elbow with an electric heat-melting sleeve, comprising an electric heat-melting sleeve 2 mounted on an insulated pipe 1. The electric heat-melting sleeve 2 comprises an electric heat-melting sleeve body 201 fixed to the insulated pipe 1. The electric heat-melting sleeve body 201 has spiral through-holes 202 on both sides, and cylindrical particles 203 evenly distributed on both sides of the inner portion of the electric heat-melting sleeve body 201. During operation, the electric heat-melting sleeve body 201 is heated by an external power source, causing the cylindrical particles 203 inside the electric heat-melting sleeve body 201 to be heated to a molten state. These particles melt uniformly through heat conduction and convection and penetrate the surface of the insulated pipe 1, forming a tight fusion connection between the insulated pipe 1 and the electric heat-melting sleeve body 201.

[0033] like Figure 1-Figure 5 As shown, the length of the cylindrical particles 203 is consistent with the spiral through hole 202. During operation, the distribution of the cylindrical particles 203 matches the shape and length of the spiral through hole 202, which helps to optimize the heating and welding process and ensure the uniformity and stability of the connection.

[0034] like Figure 1-Figure 5 As shown, an electric heating wire 3 is installed inside the electric hot melt sleeve 2. The electric heating wire 3 includes a resistance wire 301 installed in two groups of spiral through holes 202. A plurality of joints 302 are installed on the two groups of resistance wires 301. During operation, an external power supply allows current to flow in the resistance wire 301 through the joints 302. Since the resistance wire 301 has a certain resistance value, Joule heat is generated, which increases the temperature of the resistance wire 301, thereby realizing heat output, thereby melting both sides of the electric hot melt sleeve 2 and making it tightly connected to the insulation pipe 1.

[0035] like Figure 1-Figure 5 As shown, the two groups of resistance wires 301 are made of nickel-chromium alloy. During operation, a stable oxide film is formed on the surface of the nickel-chromium alloy. This oxide film can effectively protect the alloy from further oxidation, thereby increasing its service life. The formation of the oxide layer enables the resistance wire 301 to still work stably at high temperatures and is not easily corroded.

[0036] like Figures 1-4As shown, the outer portion of the electric heating sleeve 2 is sleeved with two sets of fixing mechanisms 4, and the fixing mechanism 4 includes a fixing lock body 401 sleeved on the outer portion of the electric heating sleeve body 201, and a threaded column 402 is rotatably mounted on the fixing lock body 401, and two fixing bolts 403 are rotatably mounted on the threaded column 402. During operation, the threaded column 402 mounted on the fixing lock body 401 plays a connecting and supporting role. The position of the threaded column 402 is adjusted by rotating the threaded column 402. When the threaded column 402 is in place, the two fixing bolts 403 fix the threaded column 402, thereby achieving the fixing effect on the electric heating sleeve body 201. In this way, it can not only ensure that the fixing lock body 401 of the electric heating sleeve body 201 is firmly fixed and does not loosen during operation, but also can be fine-tuned as needed to adapt to different usage conditions or installation requirements.

[0037] like Figures 1-4 As shown, an internal thread groove corresponding to the threaded column 402 is provided on the fixed lock body 401. During operation, when the threaded column 402 is screwed into the internal thread groove of the fixed lock body 401, a tight connection is formed between the threaded column 402 and the internal thread groove. This process can achieve a firm connection between the fixed lock body 401 and the threaded column 402 through the mutual engagement of the threads, ensuring the stability and firmness between the two.

[0038] like Figures 1-4 As shown, there is a rubber pad on the contact surface between the fixing lock body 401 and the electric heating jacket body 201. During operation, the rubber pad can prevent the fixing lock body 401 from damaging the electric heating jacket body 201.

[0039] When the present invention is in use, the electric heating jacket body 201 is first sleeved onto the insulation pipe 1. After the sleeve connection is completed, the two sets of fixed lock bodies 401 are installed on the electric heating jacket body 201, and the threaded column 402 is rotated to adjust the position of the threaded column 402. When the threaded column 402 is in place, the two fixing bolts 403 fix the threaded column 402, thereby fixing the electric heating jacket body 201. At this time, the two sets of resistance wires 301 are placed in the spiral through holes 202. After completion, the multiple joints 302 are connected to the external power supply to heat. After the heating is completed, the resistance wire 301 is pulled out, and the fixing bolts 403 are removed at the same time. The threaded column 402 is rotated to loosen the two sets of fixed lock bodies 401, and the fixed lock bodies 401 are written down.

[0040] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An electric heat-melting sleeve connecting device for the intermediate section of the outer protective tube of an insulation pipe elbow, comprising an electric heat-melting sleeve (2) installed on the insulation pipe (1), characterized in that: An electric heating wire (3) is installed inside the electric heating sleeve (2); The electric hot melt sleeve (2) is externally sleeved with two sets of fixing mechanisms (4).

2. The device for connecting an outer protective tube of an insulated pipe elbow with an electric heat-melting sleeve in the middle section according to claim 1, characterized in that: The electric heating sleeve (2) comprises an electric heating sleeve body (201) fixed on the thermal insulation pipe (1), spiral through holes (202) are provided on both sides of the electric heating sleeve body (201), and cylindrical particles (203) are evenly distributed on both sides of the interior of the electric heating sleeve body (201).

3. The electric heat-melting sleeve connection device for the outer protective tube of the insulation pipe elbow according to claim 2 is characterized in that: The length of the cylindrical particles (203) is consistent with that of the spiral through hole (202).

4. The device for connecting an outer protective tube of an insulated pipe elbow with an electric heat-melting sleeve in the middle section according to claim 1, characterized in that: The electric heating wire (3) comprises resistance wires (301) installed in two groups of spiral through holes (202), and a plurality of connectors (302) are installed on the two groups of resistance wires (301).

5. The electric heat-melting sleeve connection device for the outer protective tube of the insulation pipe elbow according to claim 4 is characterized in that: The two groups of resistance wires (301) are made of nickel-chromium alloy.

6. The device for connecting an outer protective tube of an insulated pipe elbow with an electric heat-melting sleeve in the middle section according to claim 1, characterized in that: The fixing mechanism (4) comprises a fixing lock body (401) sleeved on the outside of the electric heating sleeve body (201), a threaded column (402) being rotatably mounted on the fixing lock body (401), and two fixing bolts (403) being rotatably mounted on the threaded column (402).

7. The device for connecting an outer protective tube of an insulated pipe elbow with an electric heat-melting sleeve in the middle section according to claim 6, characterized in that: The fixed lock body (401) is provided with an internal thread groove corresponding to the threaded column (402).

8. The electric heat-melting sleeve connection device for the outer protective tube of the insulation pipe elbow according to claim 7, characterized in that: The contact surface between the fixing lock body (401) and the electric heating sleeve body (201) is provided with a rubber pad.

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