Insulated pipe

Abstract

The present invention relates to an insulated pipe that can improve heat retention performance by having a heating member such as a heating wire in close contact with a pipe body, and can efficiently prevent heat escape through multi-structural sealing and insulating of the heating member. According to the present invention, the insulated pipe comprises: an insulated pipe body unit; a coating layer coated on the outer surface of the insulated pipe body unit; and a heating unit which is fixed to the coating layer and which generates heat through the application of an external power source.

Description

Insulated piping

[0001] The present invention relates to an insulating pipe, and more specifically, to an insulating pipe capable of transporting various types of fluids or gases, and preventing the transported fluids or gases from solidifying and sticking by maintaining the insulating temperature of the pipe body at a constant level.

[0002] Piping is used to transport fluids in various devices and facilities, from various machines that require a supply of fluids to general households and large industrial facilities.

[0003] These pipes consist of a number of pipes that connect the fluid supply part to the use part.

[0004] Since pipes are manufactured to a certain standard due to limitations in transportation and handling, when pipes must be constructed to a length longer than the standard length of the pipe or when bent pipes must be installed, various pipe connecting devices are used to connect the pipes.

[0005] Pipe connecting devices include couplings, elbows, T-joints, and various sockets.

[0006] The pipes that make up the pipeline are made of various materials such as copper pipes, stainless steel pipes, and synthetic resin pipes, depending on the type of fluid flowing along the pipe, and various connection methods are used depending on the type of pipe.

[0007] There are several methods for connecting pipes, including a flange connection method in which a flange is formed at each end of corresponding pipes and connected, a coupling connection method in which the ends of each pipe are inserted into a coupling and connected, a screw connection method in which a screw thread is formed at each end of corresponding pipes and connected by screws, a band connection method in which the ends of pipes are connected using a stainless steel band, and an electrofusion method in which the ends of pipes to be connected are melted and bonded using a mesh-shaped heating wire.

[0008] In addition, flare connection methods are used for piping to transport high-pressure fluids such as refrigerants.

[0009] Meanwhile, pipes are required to have excellent heat retention and insulation properties to ensure that the flowing fluid can maintain a constant temperature for a long period of time without being affected by the external temperature of the pipe.

[0010] To achieve these insulating properties, traditionally, insulated pipes were used, with insulation sheets laminated directly to the pipe's outer perimeter. However, this approach presents challenges, such as the need for replacement of existing insulated pipes when the pipes age and become damaged. This necessitates maintenance, which is both costly and difficult.

[0011] A prior art document related to the technical field to which the present invention belongs is Republic of Korea Publication No. 10-1746083.

[0012] The present invention has been devised to solve the problems of the above-mentioned prior art, and the purpose of the present invention is to provide an insulating pipe that can improve heat retention performance by stably attaching a heat generating member such as a heating wire to the main body of the pipe, and can effectively prevent heat leakage by insulating the heat generating member while sealing it in a multi-structure.

[0013] In addition, the purpose is to provide an insulating pipe capable of supplying a constant temperature to a gas or fluid passing through the pipe body by simultaneously heating the pipe body and the flange formed integrally with the pipe body to the same temperature to minimize temperature deviation.

[0014] In addition, the purpose is to provide an insulating pipe in which the heat of the heating member is evenly transmitted to the pipe body by arranging fixtures for fixing the heating member to the pipe body in a certain pattern, and the heat of the heating member is prevented from flowing, peeling, or detaching by stably holding the fixtures with a holder.

[0015] In addition, the purpose is to provide an insulating pipe that can prevent breakdown or damage to the heating element by preventing external exposure of the heating element with a closing case.

[0016] An insulating pipe according to one embodiment of the present invention comprises: an insulating pipe main body; a coating layer coated on an outer surface of the insulating pipe main body; and a heating unit fixed to the coating layer and generating heat by application of an external power source.

[0017] And, the coating layer is formed of ceramic.

[0018] In addition, the method further includes a fixing member that is arranged to be spaced apart from each other at a certain interval on the coating layer and is fixed in a form in which a certain area of ​​the heating wire penetrates through the fixing member.

[0019] And, the fixture is fixed to the coating layer, and further includes a holder formed of a ceramic material.

[0020] In addition, the invention further includes a bonding sheet that adheres the heating unit to the coating layer in a manner that wraps the heating unit and the coating layer.

[0021] In addition, the sealing layer is formed of a ceramic material and further includes a protective sealing layer that wraps the adhesive sheet to protect and seal the heating element.

[0022] Additionally, it further includes an insulating member surrounding the protective sealing layer.

[0023] And, it further includes a finishing case mounted on the insulating pipe main body in a form that wraps the insulating part; and a sealing part accommodated in a space formed between one side of the insulating pipe main body and one side of the finishing case and a space formed between the other side of the insulating pipe main body and the other side of the finishing case.

[0024] In addition, a flange having a buried groove is formed on one side and the other side of the main body of the insulating pipe, and an additional heating unit is buried in the buried groove and generates heat by applying an external power source, but heats at the same temperature as the heating unit; and a finishing unit made of a ceramic material is further included that fills the buried groove to conceal the additional heating unit.

[0025] The insulating pipe according to the present invention can improve the insulating performance by closely contacting a heating member such as a heating wire with the pipe body, and has the effect of efficiently preventing the leakage of heat by insulating the heating member while sealing it in a multi-structure.

[0026] In addition, by simultaneously heating the pipe body and the flange formed integrally with the pipe body to the same temperature to minimize temperature deviation, there is an effect of supplying a constant temperature to the gas or fluid passing through the pipe body.

[0027] In addition, by arranging fixtures for fixing a heating member to the pipe body in a certain pattern, the heat of the heating member can be evenly transferred to the pipe body, and by stably holding the fixtures with a holder, there is an effect of preventing movement, peeling, detachment, etc. of the heating member.

[0028] In addition, by preventing external exposure of the heat generating element with a closed case, there is an effect of preventing breakdown or damage to the heat generating element.

[0029] FIG. 1 is a perspective view illustrating an insulating pipe according to one embodiment of the present invention.

[0030] FIG. 2 is a cross-sectional view showing the state of combination of components applied to a heat-insulating pipe according to one embodiment of the invention.

[0031] FIG. 3 is a perspective view showing an example of a finishing case applied to an insulating pipe according to one embodiment of the present invention.

[0032] The advantages and features of the present invention and the methods for achieving them will become clear with reference to the embodiments described in detail below together with the accompanying drawings.

[0033] However, the present invention is not limited to the embodiments disclosed below, but can be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

[0034] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in various different forms and is not limited to the embodiments described herein. Like reference numerals designate similar parts throughout the specification.

[0035] FIG. 1 is a perspective view illustrating an insulating pipe according to one embodiment of the present invention, FIG. 2 is a cross-sectional view illustrating a state of combination of components applied to an insulating pipe according to one embodiment of the present invention, and FIG. 3 is a perspective view illustrating an example in which a closing case is applied to an insulating pipe according to one embodiment of the present invention.

[0036] An insulating pipe (1) according to one embodiment of the present invention may include at least one of an insulating pipe main body (10), a coating layer (20), a heating part (30), a fixture (40), a holder (50), a sealing sheet (60), a protective sealing layer (70), an insulating part (120), a closing case (80), a sealing part (90), an additional heating part (100), and a closing part (110).

[0037] The main body of the insulating pipe (10) has a passage formed inside for passing a transported substance in the form of gas, liquid or fluid.

[0038] The transported material is introduced through one open portion of the main body of the insulating pipe (10), and the transported material is discharged through the other open portion.

[0039] A flange (11) for connection is formed on each side of the insulating pipe body (10).

[0040] A plurality of insulating pipe main bodies (10) are connected in a chain through flanges (11).

[0041] At this time, the different insulating pipe main bodies (10) are arranged so that the flanges (11) are in contact with each other, and the flanges (11) of the different insulating pipe main bodies (10) can be joined using bolts or pieces.

[0042] Additionally, the insulating pipe main body (10) may further include a branch pipe for changing the transport direction of the transported material. The branch pipe may be formed integrally with the insulating pipe main body (10), and a flow path for transporting the transported material is formed inside. In addition, a flange (11) is formed at the end of the branch pipe for connection to another insulating pipe main body (10).

[0043] The coating layer (20) is coated on the entire outer surface of the insulating pipe main body (10) and branch pipe. The coating layer (20) is formed of a ceramic material with excellent insulating properties.

[0044] By applying ceramic to the outer surface of the entire insulating pipe body (10) and branch pipe before hardening and hardening it, a coating layer (20) can be formed.

[0045] Ceramics have excellent heat resistance that allows them to be used in high-temperature environments, and thus their physical properties do not change even at the high heat generation temperature of the heating unit (30) described below, ensuring structural stability. Furthermore, the heat generated from the heating unit (30) can be prevented from leaking outward, and the heat can be concentrated on the insulating pipe body (10) and the transported material moving along the flow path. Through this coating layer (20), the loss of heat generated from the heating unit (30) can be effectively prevented.

[0046] In addition, a coating film having excellent corrosion resistance, chemical resistance, and wear resistance can be formed on the main body of the insulating pipe (10) through the coating layer (20), thereby preventing corrosion. In addition, the ceramic has high surface hardness and excellent adhesion to the main body of the insulating pipe (10), thereby preventing the coating layer (20) from falling off even after long-term use, thereby preventing corrosion due to damage to the coating film, and thus the replacement cycle of the insulating pipe (1) can be significantly increased.

[0047] Meanwhile, the heating part (30) is fixed to the coating layer (20). The heating part (30) heats the insulating pipe main body (10) to increase the temperature of the flow path, and can be formed as a heating wire or heating coil that operates by receiving external power, and an example formed as a heating wire is shown in the drawing.

[0048] The heating unit (30) is fixed on the coating layer (20) by a fixing member (40) described later.

[0049] Since the fixture (40) is applied in multiple numbers, the heating part (30) is accommodated in the fixture (40) in each certain area, and the remaining areas are fixed so as to be in contact with the outer surface of the coating layer (20).

[0050] The heating element (30) can be formed of a heating wire or heating coil that generates heat when an external power source is applied.

[0051] It is desirable to selectively apply heating wires that are widely used in general industrial fields, such as various types of heating air and freeze prevention fields.

[0052] The heating element (30) can be fixed in a waveform pattern, sawtooth pattern, or other various patterns, and is fixed in a form that surrounds the coating layer (20). As a result, the heating element (30) can heat the entire insulating pipe body (10) to a uniform temperature.

[0053] It is possible to prevent the transported material flowing through the flow path through the heating unit (30) from solidifying and attaching or sticking to the inner wall surface of the insulating pipe main body (10). This prevents the flow path from being blocked by the attached or stuck transported material.

[0054] In addition, the insulating pipe (1) according to one embodiment of the present invention can also be used for the purpose of transporting a type (material) of material that must be maintained at a certain temperature or higher, and the heating unit (30) raises and maintains the temperature of the passage in a stable state, thereby preventing the material from being deteriorated or hardened during the process of passing through the passage.

[0055] The fixture (40) is configured to fix the heating element (30) to the coating layer (20).

[0056] The fixture (40) is open on both sides and has an empty space formed inside that accommodates a certain area of ​​the heating element (30). Therefore, the fixture (40) is formed in a roughly cylindrical shape.

[0057] The fixture (40) is applied in multiple pieces to stably fix the heating unit (30), and is placed at a certain distance from each other on the main body (10) of the insulating pipe and the branch pipe.

[0058] The pattern of the heating element (30) fixed to the coating layer (20) is determined according to the number and spacing of the fixtures (40).

[0059] The fixture (40) can be fixed vertically to the main body (10) of the insulating pipe and the branch pipe or horizontally laid down. In this case, when the fixture (40) is fixed vertically, the open portions on both sides face upward and downward. In addition, when the fixture (40) is fixed horizontally, the open portions on both sides face left and right.

[0060] These fixtures (40) can be first fixed to the coating layer (20) through an adhesive and then secondarily fixed by a holder (50) described later, or can be fixed only through the holder (50) described later.

[0061] Meanwhile, the holder (50) is configured to fix each fixture (40) to the coating layer (20). The holder (50) is applied 1:1 to the fixture (40). The holder (50) is attached in a form in which the central portion surrounds the outer surface of the fixture (40), and the side portions on both sides are attached to the coating layer (20).

[0062] The holder (50) can be formed of a ceramic material. By jointly attaching the ceramic to the fixture (40) and the coating layer (20) before hardening and then hardening it, the holder (50) can be integrally joined to the coating layer (20) and the fixture (40) can be fixed. As a result, the heating element (30) can be stably fixed to the coating layer (20) formed of the ceramic material without movement.

[0063] The adhesive sheet (60) is fixed in a form that wraps around the entire heating part (30) and the coating layer (20), stably attaching the heating part (30) to the coating layer (20) while maintaining the tension of the heating part (30).

[0064] At this time, the adhesive sheet (60) also wraps the fixture (40) and the holder (50). In addition, the adhesive sheet (60) can be applied as a Teflon tape that has excellent heat resistance, chemical resistance, and hydrophobicity and can provide excellent adhesiveness.

[0065] The protective sealing layer (70) is fixed in a form that wraps around the entire adhesive sheet (60) to form a sealing layer while protecting the heating element (30) and the adhesive sheet (60).

[0066] This protective sealing layer (70) is formed of a ceramic material, the same as the coating layer (20).

[0067] By applying ceramic to the entire outer surface of the adhesive sheet (60) before hardening and hardening it, a protective sealing layer (70) can be formed.

[0068] The ceramic forming the protective sealing layer (70) also has excellent heat resistance that allows it to be used in high-temperature environments, and can improve the heat retention effect by preventing the heat generated from the heating unit (30) from leaking out to the outside and allowing the heat to be concentrated on the main body (10) of the insulating pipe and the transported material moving along the path.

[0069] In addition, a coating film having excellent corrosion resistance, chemical resistance, and wear resistance can be formed on the adhesive sheet (60) through the protective sealing layer (70).

[0070] In addition, ceramics can prevent corrosion caused by damage to the coating film by preventing the protective sealing layer (70) from falling off even after long-term use through high surface hardness and excellent adhesion to the adhesive sheet (60).

[0071] The insulation (120) is fixed in a form that wraps around the entire protective sealing layer (70). The insulation (120) can be applied with Kapton tape.

[0072] Kapton tape is a tape with excellent heat resistance that does not undergo thermal deformation even at 250 to 300 degrees Celsius, and has excellent chemical resistance and insulation properties. It can prevent the heat generated from the heating part (30) from leaking out through the insulation part (120) and can efficiently concentrate the heat generated from the heating part (30) on the heat-insulating pipe main body (10) and the transported material flowing through the flow path. As a result, the phenomenon of the transported material hardening and adhering or sticking to the inner wall surface of the heat-insulating pipe main body (10) can be more efficiently prevented.

[0073] The closing case (80) is mounted on the insulating pipe main body (10) in a form that surrounds the insulating part (120).

[0074] The closing case (80) includes a first case unit (81) and a second case unit (82).

[0075] The first case unit (81) and the second case unit (82) are formed in a shape that can wrap around the insulating pipe main body (10).

[0076] For example, when the insulating pipe main body (10) is formed in a circular cross-sectional shape, the first case unit (81) and the second case unit (82) are formed in a semicircular cross-sectional shape. In addition, when the insulating pipe main body (10) is formed in a rectangular cross-sectional shape, the first case unit (81) and the second case unit (82) are formed in a 'ㄷ' cross-sectional shape.

[0077] At this time, the drawing shows an example in which the insulating pipe main body (10) is formed in a cylindrical shape, and the first case unit (81) and the second case unit (82) are formed in a semicircular cross-sectional shape.

[0078] The first case unit (81) surrounds 1 / 2 of the area of ​​the insulating pipe main body (10), and the second case unit (82) surrounds the remaining 1 / 2 of the area of ​​the insulating pipe main body (10).

[0079] The first case unit (81) and the second case unit (82) form a single cylinder when wrapping the insulating pipe main body (10). At this time, since a plurality of insulating pipe main bodies (10) are connected in a chain, the first case unit (81) and the second case unit (82) are formed to have a length that can expose only the flange (11).

[0080] The first case unit (81) and the second case unit (82) are in contact with each other at both ends when wrapping the insulating pipe main body (10). In addition, a step groove (80a) having a cross-sectional shape roughly in the shape of the letter "L" is formed at each end. The step grooves (80a) of the first case unit (81) and the second case unit (82) are connected to each other, and one joining plate (130) is accommodated in each of the step grooves (80a).

[0081] The joining plate (130) is joined to the first case unit (81) and the second case unit (82) using bolts or pins, respectively.

[0082] Since the joining plate (130) is joined to the first case unit (81) and the second case unit (82) at the step groove (80a), a pair of the first case unit (81) and the second case unit (82) can be joined as one body. In addition, since the pair of the first case unit (81) and the second case unit (82) are joined to each other, exposure of the insulation part (120) is prevented.

[0083] Through this closing case (80), the insulating pipe main body (10), the coating layer (20), the heating unit (30), the fixture (40), the holder (50), the adhesive sheet (60), the protective sealing layer (70), and the insulating unit (120) can be stably protected from the external environment.

[0084] Additionally, the closing case (80) is formed to have an inner diameter that can be spaced apart from the insulating pipe main body (10). That is, the inner surface of the closing case (80) is spaced apart from the coating layer (20). Accordingly, the aforementioned heating unit (30), fixture (40), holder (50), adhesive sheet (60), protective sealing layer (70), and insulation unit (120) can be sequentially installed between the inner surface of the closing case (80) and the coating layer (20).

[0085] Additionally, the heat retention function can be improved by forming an air layer between the closing case (80) and the insulation part (120) described later.

[0086] Additionally, the closing case (80) can be formed of PTFE (ptetrafluoroethylene) material that is not easily corroded and has excellent heat resistance.

[0087] Meanwhile, based on Fig. 2, a support surface portion (12) formed in a cross-sectional shape roughly in the shape of the letter "ㄱ" is formed along the upper circumference of the insulating pipe main body (10), and a support surface portion (12) formed in a cross-sectional shape roughly in the shape of the letter "ㄴ" is formed along the lower circumference of the insulating pipe main body (10).

[0088] The sealing portion (90) is a configuration that seals the space created between the insulating pipe body (10) and the closing case (80).

[0089] The sealing member (90) is composed of a pair of two and can be formed in a ring shape.

[0090] With reference to Fig. 2, one sealing portion (90) is accommodated in a space formed between the upper side of the insulating pipe main body (10) and the upper side of the finishing case (80). And, another sealing portion (90) is accommodated in a space formed between the lower side of the insulating pipe main body (10) and the lower side of the finishing case (80). At this time, the sealing portion (90) is fixed in a form in which one side is supported by the support surface (12) and the other side is pressed by the inner surface of the finishing case (80).

[0091] The sealing portion (90) may be formed of a metal material or may be formed of a rubber or silicone material with excellent sealing power.

[0092] The additional heating unit (100) is embedded in a buried groove (11a) formed on each of the two flanges (11) of the aforementioned insulating pipe main body (10).

[0093] The landfill (11a) may be formed in a ring shape or a ring shape with a certain area open.

[0094] The additional heating unit (100) can be formed as a heating wire or heating coil that operates by receiving external power, similar to the heating unit (30) described above.

[0095] The additional heating unit (100) can be processed into a ring shape and embedded in the embedded groove (11a).

[0096] The additional heating unit (100) heats the flange (11) to increase the temperature. The additional heating unit (100) operates at the same temperature as the heating unit (30).

[0097] The insulating pipe body (10) and flange (11) can be heated to the same temperature through the heating unit (30) and the additional heating unit (100).

[0098] At this time, the aforementioned heating unit (30) and additional heating unit (100) can be controlled by an electrically connected control panel (not shown). The control panel is provided with an on / off button for turning the heating unit (30) and additional heating unit (100) on or off, and a temperature control button for increasing or decreasing the temperature of the heating unit (30) and additional heating unit (100), respectively.

[0099] Since the technology for controlling the heating temperature by controlling the operation of the heating unit (30) and the additional heating unit (100) through the control panel is commercialized, a detailed description is omitted.

[0100] In the past, heaters (heating wires) were applied only to the insulating pipe, and since heaters (heating wires) were not applied to the flanges (11) formed on both sides of the insulating pipe, a temperature difference occurred between the insulating pipe and the flange (11), and there was a problem that the temperature of the insulating pipe was lowered due to heat exchange between the insulating pipe, whose temperature was raised by the heater (heating wire), and the flange (11) which did not receive heat from the heater (heating wire) and therefore had a lower temperature than the insulating pipe. In addition, since the temperature of the flange (11) was lower than that of the insulating pipe, there was a problem that the temperature was undesirably lowered in the process of transporting the material passing through the flange (11) section.

[0101] However, since the insulating pipe (1) according to one embodiment of the present invention can heat the insulating pipe main body (10) and the flange (11) to the same temperature by the heating unit (30) and the additional heating unit (100), it is possible to prevent a temperature difference from occurring between the insulating pipe main body (10) and the flange (11), and thus, it is possible to prevent an undesirable temperature drop in the process of transporting material passing through the flange (11) section.

[0102] The closing part (110) is filled into the buried groove (11a) to conceal the additional heating part (100).

[0103] The closing portion (110) can be formed of a ceramic material. By filling the embedded groove (11a) with ceramic before hardening and then hardening it, a closing portion (110) that conceals the additional heating portion (100) can be formed.

[0104] The closing part (110) formed of a ceramic material can prevent the heat generated from the additional heating part (100) from leaking out to the outside, thereby allowing the heat of the heating part (30) to be concentrated on the transported material passing through the internal space of the flange (11).

[0105] At this time, the closing portion (110) may protrude a certain amount outside the embedding groove (11a). In addition, the closing portion (110) may be wrapped by a sealing sheet (60).

[0106] Meanwhile, the aforementioned coating layer (20), holder (50) and finishing part (110) can be naturally cured or heat cured.

[0107] Those skilled in the art will appreciate that the present invention can be implemented in other specific forms without altering its technical spirit or essential characteristics. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims below rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

Claims

1. Insulating pipe main body; A coating layer coated on the outer surface of the above insulating pipe main body; and An insulating pipe that is fixed to the above coating layer and includes a heating part that generates heat by application of an external power source.

2. In paragraph 1, The above coating layer is an insulating pipe formed of ceramic.

3. In paragraph 1, An insulating pipe further comprising a fixing member arranged to be spaced apart from each other at a set interval on the coating layer and fixed in a form in which a set area of ​​the heating wire penetrates.

4. In paragraph 3, An insulating pipe further comprising a holder formed of a ceramic material and fixing the above fixture to the above coating layer.

5. In paragraph 1, An insulating pipe further comprising a sealing sheet that seals the heating unit and the coating layer so as to adhere the heating unit to the coating layer.

6. In paragraph 1, An insulating pipe that wraps the above-mentioned adhesive sheet to protect and seal the heating part, and further includes a protective sealing layer formed of a ceramic material.

7. In paragraph 6, An insulating pipe further comprising an insulating member surrounding the above protective sealing layer.

8. In paragraph 7, A finishing case mounted on the main body of the insulating pipe in a form that wraps around the above-mentioned insulation part; and An insulating pipe further comprising a sealing part accommodated in a space formed between one side of the insulating pipe main body and one side of the finishing case, and a space formed between the other side of the insulating pipe main body and the other side of the finishing case.

9. In paragraph 1, A flange having a built-in groove is formed on one side and the other side of the main body of the above-mentioned insulating pipe, respectively. An additional heating unit embedded in the above-mentioned landfill, which generates heat by applying external power, but is heated at the same temperature as the heating unit; and An insulating pipe further comprising a ceramic material finishing part filled in the above-described buried groove to conceal the above-described additional heating part.

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