Electric heat tracing box

Abstract

The utility model discloses a kind of electric heat tracing heat preservation boxes, it is related to electric heat tracing heat preservation technical field;The device includes the box body formed by the hinging of at least two shell, connecting piece and electric heat tracing device;Shell is connected by hinging piece and mutually abuts and forms containing cavity, connecting piece is used to buckle fixed shell;Box body is opened and is provided with sealing strip to enhance sealability in the opening hole for equipment pipeline to pass through opening hole rim;Electric heat tracing device is located in containing cavity, including the heat preservation layer attached to the inner wall of shell and the electric heat tracing band embedded in the circuitous guide groove or guide hole of heat preservation layer;The utility model is adapted to polygon and irregular shape equipment by the hinging structure of multiple shell, solve the limitation that only cylindrical equipment is applicable in prior art;Box body integrated design avoids installation confusion, open and close conveniently, reduce construction difficulty;Circuitous guide structure ensures that heat tracing band is evenly arranged, combined with heat preservation layer and sealing strip reduces heat loss, significantly improves heat preservation efficiency and temperature uniformity.

Description

Technical Field

[0001] This utility model relates to the field of electric heat tracing, specifically to an electric heat tracing and insulation box. Background Technology

[0002] Heat tracing and insulation systems are widely used for frost protection and insulation of industrial pipelines, storage tanks, and other equipment. Existing electric heat tracing cable installation methods typically involve operators spirally winding the cable onto the outer surface of the equipment, covering it with insulation cotton, and then further covering and securing it with a protective layer such as sheet metal. This process is characterized by numerous steps, long construction time, and high labor intensity.

[0003] To solve the above-mentioned technical problems, Chinese patent document (authorization number CN219610296U, publication date August 29, 2023) discloses a portable heat tracing device with a detachable heat tracing cable. The first and second mounting units of the device are mounted on the outer peripheral surface of the tank circuit breaker with their concave surfaces facing each other. The heat tracing cable is installed in the mounting unit to realize the heat preservation function of the tank circuit breaker.

[0004] However, this portable heat tracing device with a detachable heat tracing cable has the following shortcomings. On the one hand, the structural design of the device is only suitable for installation on the outer circumference of cylindrical equipment and cannot be adapted to the outer surface of equipment with polygonal or irregular shapes. On the other hand, during on-site construction, it is necessary to carry the first installation unit and the second installation unit, which have similar structures but different functions, at the same time, which can easily lead to carrying errors or installation confusion, thereby affecting construction efficiency. Utility Model Content

[0005] To address the problems of existing technologies being limited to cylindrical equipment and prone to confusion when carrying multiple similar units during installation, this invention provides an electric heat tracing and insulation box. The box comprises a housing formed by multiple shells abutting against each other, connectors for fastening and fixing the shells together, and an electric heat tracing device disposed within the box cavity. This structure allows the electric heat tracing and insulation box to adapt to the installation requirements of polygonal or irregularly shaped equipment, effectively avoiding installation confusion and significantly improving insulation performance.

[0006] The technical solution adopted in this utility model is:

[0007] An electric heat tracing and insulation box includes a box body, connectors, and an electric heat tracing device;

[0008] The box body includes at least two shells, the hinge edges of adjacent shells are hinged by hinges, and the mutual contact of the shells forms a receiving cavity;

[0009] The connector is provided on the box body and is used to fasten and fix the shells together.

[0010] The box body has several openings;

[0011] The electric heat tracing device is located in the receiving cavity of the box body, and the electric heat tracing device is electrically connected to the power source.

[0012] Preferably, the electric heat tracing device includes an insulation layer and an electric heat tracing tape;

[0013] The insulation layer is disposed on the inner wall of each of the shells, and the electric heating tape is disposed on the insulation layer.

[0014] Preferably, a meandering guide groove is provided on the inner wall of the insulation layer, and the electric heating tape is disposed in the meandering guide groove.

[0015] Preferably, the insulation layer has a meandering guide hole, and the electric heating cable is inserted through the meandering guide hole.

[0016] Preferably, the junction box of the electric heating tape is installed on the outer wall of the box body, and the junction box is electrically connected to the power supply.

[0017] Preferably, the housing is equipped with a temperature probe, which is electrically connected to the monitoring equipment.

[0018] Preferably, a sealing strip is provided at the edge of the opening.

[0019] Preferably, the box body includes a first shell and a second shell, the hinge edges of the first shell and the second shell are hinged by a hinge member, and a connecting member is provided at the opening edge of the first shell and the second shell.

[0020] Preferably, the connector is a retaining strip, and the opening edges of the first housing and the second housing are both provided with flanges, which are engaged in the retaining strip groove.

[0021] Preferably, the opening is located at the junction of the first housing and the second housing.

[0022] The beneficial effects of this utility model are:

[0023] 1. By using a box structure in which at least two shells are hinged together and abut against each other to form a receiving cavity, this utility model can adapt to various shapes of insulated equipment, such as round, polygonal and irregular cross-sections, thus expanding the applicable scenarios and overcoming the limitation of existing products that are only applicable to cylindrical equipment, thereby improving the product's versatility and on-site adaptability.

[0024] 2. The cavity formed by the box body is conducive to the uniform distribution and insulation of heat within the cavity space, significantly reducing heat loss, improving insulation efficiency and improving temperature uniformity within the cavity, thereby enhancing the temperature maintenance effect of the insulated equipment.

[0025] 3. Placing the electric heating cable in the meandering guide grooves or through the meandering guide holes on the insulation layer can fix and protect the heating cable, ensuring the stability of the spatial position and spacing of the heating cable, avoiding local overheating or damage caused by random winding or displacement, thereby improving the reliability and service life of the equipment.

[0026] 4. Installing a sealing strip at the opening edge can effectively reduce heat loss through the pipeline and prevent external moisture and dust from entering, thereby enhancing the overall sealing performance and improving the reliability of the device in the field environment.

[0027] 5. The hinges make the housing easy to open and close, and the connectors enable quick snap-fitting and locking of the box, simplifying on-site construction steps and reducing labor intensity; at the same time, the interlocking design of the housing helps to avoid confusion caused by carrying or installing units with similar structures but different functions, facilitating correct installation and maintenance. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of one side of the utility model.

[0030] Figure 2 This is a schematic diagram of the other side of the structure of this utility model;

[0031] Figure 3 A schematic diagram of an insulation layer structure with a meandering guide groove;

[0032] Figure 4 This is a schematic diagram of an insulation layer structure with meandering guide holes.

[0033] Among them, 1-hinged component, 2-opening, 3-insulation layer, 4-electric heating tape, 5-detour guide groove, 6-detour guide hole, 7-junction box, 8-temperature probe, 9-sealing strip, 10-first housing, 11-second housing, 12-flange, 13-locking strip. Detailed Implementation

[0034] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0035] The following disclosure provides many different embodiments or examples for implementing various structures of this invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this invention.

[0036] The embodiments of the utility model will now be described in detail with reference to the accompanying drawings.

[0037] Example 1

[0038] See appendix Figure 1 To be continued Figure 2 An electric heat tracing and insulation box, comprising a box body, connectors and an electric heat tracing device;

[0039] The box body includes at least two shells. In this embodiment, the shells can be made of metal, high-temperature resistant plastic, or composite materials according to the structural requirements of the insulated equipment, so as to balance mechanical strength and thermal insulation performance. Each shell includes an abutting wall that abuts against other shells. The edges of the abutting walls of the shells abut against each other and together enclose to form a box body with a receiving cavity. For example, there can be two shells, and the concave surfaces of the two shells are interlocked to form a box body with a receiving cavity inside. There can also be three shells, and the concave surfaces of the three shells are interlocked to form a box body with a receiving cavity inside. The shape of the box body can be circular, polygonal, or irregular, depending on the shape requirements of the insulated equipment. This application does not limit the specific shape of the box body.

[0040] The abutting wall edge of the housing includes the following areas: a hinge edge, used to be hinged with the adjacent housing through a hinge 1; a connecting edge; when a connecting piece is provided at the abutting wall edge, this area is used to cooperate with the connecting piece to achieve the snap-fit ​​and fixation of the box; and an abutting edge, other than the hinge edge and the connecting edge, used to abut with the adjacent housing when the box is closed.

[0041] The hinge edges of adjacent shells are hinged by a hinge 1. In this embodiment, the hinge 1 is a hinge, which includes two hinge pieces that are hinged to each other. The two hinge pieces are respectively fixedly disposed at the hinge edges of adjacent shells. The installation position can be the outer wall or the inner wall of the hinge edge of the shell. The hinge 1 can also be other structural forms that can realize the hinge function of adjacent shells. The specific structure of the hinge 1 is not limited here.

[0042] The connector is disposed on the box body and is used to fasten and fix the shells together. The connector can be a cable tie that is tied to the box body or a buckle structure with a quick release button. The specific structure of the connector is not limited here. The connector can be fixed in the closed state. Preferably, it can ensure that the box body is firmly closed while facilitating quick opening and combined use on site.

[0043] The box body has several openings 2. These openings 2 are used for the connection pipes of the insulated equipment to pass through, or for the cables, exhaust ports and other structures of the insulated equipment to pass through. The position, diameter and shape of the openings 2 on the box body can be adjusted according to the external dimensions, interface positions and pipe layout requirements of the insulated equipment.

[0044] The electric heat tracing device is located in the receiving cavity of the box and is used to provide heat to the equipment being insulated. The electric heat tracing device is electrically connected to the power source. The electric heat tracing device can be set on the inner wall of the box and fit against the inner wall of the box, or the electric heat tracing device can be placed directly in the receiving cavity of the box without being fixedly connected to the box.

[0045] The electric heat tracing and insulation box constructed in this embodiment forms a receiving cavity by enclosing at least two shells. The shells are made of metal, high-temperature resistant plastic, or composite materials, taking into account both mechanical strength and thermal insulation performance, and ensuring the structural stability and durability of the box. Different numbers and shapes of shells can meet the diverse needs of different insulated equipment, and have good adaptability and versatility.

[0046] The hinge 1 enables a flexible and stable hinged connection between the shells, facilitating the opening and closing of the box; the connector ensures that the box is securely closed and facilitates quick on-site disassembly and maintenance, improving the convenience and safety of operation.

[0047] The well-designed opening 2 on the box facilitates the passage of various connecting pipes, cables, and exhaust structures, meeting the needs of multi-functional interfaces; the position and shape of the opening 2 are adjustable to adapt to the special working conditions of different equipment, enhancing the overall applicability.

[0048] The reasonable arrangement of the electric heat tracing device within the housing cavity enables uniform heat transfer, improves the antifreeze and heat preservation effect of the insulated equipment, and facilitates maintenance and replacement.

[0049] Example 2

[0050] Based on the above embodiment 1, the electric heat tracing device includes an insulation layer 3 made of heat-insulating material and an electric heat tracing tape 4;

[0051] The number of insulation layers 3 is the same as the number of shells. Each insulation layer 3 is respectively disposed on the inner wall of each shell. The shape of the insulation layer 3 matches or adapts to the shape of the inner wall of the corresponding shell to ensure that the insulation layer is tightly attached to the inner wall of the shell. The insulation layer 3 and the inner wall of the shell can be connected by adhesive, mechanical fixation or other suitable combination methods to ensure the stable installation of the insulation layer 3.

[0052] The electric heating cable 4 is disposed on the insulation layer 3. The electric heating cable 4 can be disposed on the inner surface of the insulation layer 3 by means of bonding, mechanical fixing or other methods. The electric heating cable 4 can be a continuous electric heating cable 4 or several electric heating cables 4 disposed on each insulation layer 3. This application does not limit the number of electric heating cables 4.

[0053] To enhance the heating performance and structural reliability of the electric heat tracing device, a meandering guide groove 5 is provided along the inner wall surface of the insulation layer 3, see Appendix. Figure 3 The meandering guide groove 5 has a wavy, sawtooth, or multi-zigzag shape and multiple turning points, allowing the electric heating cable 4 to be laid around the groove to achieve fixation and proper arrangement of the electric heating cable 4; or, the insulation layer 3 is provided with meandering guide holes 6, see appendix. Figure 4 The meandering guide hole 6 is formed by opening multiple holes in the insulation layer 3. These holes are connected by a specific path to form a tortuous channel. The electric heating cable 4 is inserted through the meandering guide hole 6 to further ensure the positioning and stability of the electric heating cable 4. The meandering guide hole 6 can be formed by the layering and stacking process of the insulation layer 3. Specifically, the insulation layer 3 is formed by stacking prefabricated plates one by one. The contact surfaces of adjacent prefabricated plates together form the meandering guide hole 6. The meandering guide hole 6 can also be a straight hole set inside the insulation layer 3. The electric heating cable 4 is turned back at both ends of the straight hole to achieve a meandering arrangement.

[0054] In this embodiment, the junction box 7 of the electric heating cable 4 is installed on the outer wall of the housing. The junction box 7 is connected to the end of the electric heating cable 4 to realize the electrical connection between the electric heating cable 4 and the external power supply, and to provide insulation protection and physical isolation for the connection end. A temperature probe 8 is provided inside the housing. The temperature probe 8 can be placed in the insulation layer 3 or in the inner cavity of the insulation layer 3. The temperature probe 8 is electrically connected to a monitoring device to detect the temperature status inside the cavity in real time. The monitoring device can be a computer.

[0055] A sealing strip 9 is provided at the edge of the opening 2. The sealing strip 9 is made of an elastic and weather-resistant material. Specifically, the sealing strip 9 can be made of high-elasticity silicone or EPDM material. Both high-elasticity silicone and EPDM materials have excellent weather resistance and compression resilience. The sealing strip 9 is fixed to the edge of the opening 2 by pressing or slotting. The sealing strip 9 can effectively seal the gap between the opening and the insulated equipment, prevent heat loss and external moisture and dust from entering the box, thereby improving the overall insulation performance and the durability of the device.

[0056] Example 3

[0057] Based on the above embodiment 1, embodiment 3 provides a specific electric heat tracing and insulation box structure.

[0058] In this embodiment, the box body includes a first shell 10 and a second shell 11, and the concave surfaces of the first shell 10 and the second shell 11 are fastened together to form a box body with an internal receiving cavity;

[0059] The hinge edges of the first housing 10 and the second housing 11 are hinged by the hinge 1, and the opening edges of the first housing 10 and the second housing 11 are provided with connecting members;

[0060] In this embodiment, the connector is a retaining strip 13 with a retaining groove. The opening edges of the first housing 10 and the second housing 11 are both provided with flanges 12. The structure of the flanges 12 is set according to the retaining groove structure of the retaining strip 13. The flanges 12 of the first housing 10 and the second housing 11 are both engaged in one retaining groove of the retaining strip 13, or the flanges 12 of the first housing 10 and the second housing 11 are respectively engaged in different retaining grooves of the retaining strip 13, so as to achieve a stable fastening and convenient disassembly and assembly.

[0061] In this embodiment, the opening 2 is formed at the connection edge of the first housing 10 and the second housing 11. Half of the structure of the opening 2 is provided at the connection edge of the first housing 10, and the other half of the structure of the opening 2 is provided at the connection edge of the second housing 11. After the two are joined together, they form a complete opening 2. Setting the opening 2 in this structure facilitates the installation of the electric heat tracing and insulation box.

[0062] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. An electric heat tracing and insulation box, characterized in that: Includes the housing, connectors, and electric heat tracing device; The box body includes at least two shells, the hinge edges of adjacent shells are hinged by a hinge (1), and the mutual contact of each shell forms a box body with a receiving cavity; The connector is provided on the box body and is used to fasten and fix the shells together. The box body is provided with several openings (2); The electric heat tracing device is located in the receiving cavity of the box body, and the electric heat tracing device is electrically connected to the power source.

2. The electric heat tracing and insulation box as described in claim 1, characterized in that: The electric heat tracing device includes an insulation layer (3) and an electric heat tracing tape (4); The insulation layer (3) is disposed on the inner wall of each of the shells, and the electric heating tape (4) is disposed on the insulation layer (3).

3. The electric heat tracing and insulation box as described in claim 2, characterized in that: The inner wall of the insulation layer (3) is provided with a meandering guide groove (5), and the electric heating tape (4) is located in the meandering guide groove (5).

4. The electric heat tracing and insulation box as described in claim 2, characterized in that: The insulation layer (3) is provided with a meandering guide hole (6), and the electric heating tape (4) is inserted through the meandering guide hole (6).

5. The electric heat tracing and insulation box as described in claim 2, characterized in that: The junction box (7) of the electric heating tape (4) is installed on the outer wall of the box body, and the junction box (7) is electrically connected to the power supply.

6. The electric heat tracing and insulation box as described in claim 2, characterized in that: The box is equipped with a temperature probe (8), which is electrically connected to the monitoring equipment.

7. The electric heat tracing and insulation box as described in claim 1, characterized in that: A sealing strip (9) is provided at the edge of the opening (2).

8. The electric heat tracing and insulation box as described in claim 1, characterized in that: The box body includes a first shell (10) and a second shell (11). The hinge edges of the first shell (10) and the second shell (11) are hinged by a hinge (1). A connector is provided at the opening edge of the first shell (10) and the second shell (11).

9. The electric heat tracing and insulation box as described in claim 8, characterized in that: The connector is a clip (13). The opening edges of the first housing (10) and the second housing (11) are provided with flanges (12). The flanges (12) of the first housing (10) and the second housing (11) are engaged in the slots of the clip (13).

10. The electric heat tracing and insulation box as described in claim 8, characterized in that: The opening (2) is located at the junction of the first housing (10) and the second housing (11).

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