Electric auxiliary heating device for metal pipeline
By using the electrically assisted heating device of metal pipes heated in the pipeline using electromagnetic induction principle, the problems of low heating efficiency and unevenness of existing resistive wire heating devices are solved, and the heating effect of high efficiency, energy saving and automatic control is achieved.
Patent Information
- Application Number
- CN202421408073.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-19
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-06-19
AI Technical Summary
The existing resistive wire-type pipeline electrical auxiliary heating devices have low heating efficiency, uneven heating, and high maintenance costs, so automatic control and energy-saving effects cannot be achieved.
The metal pipe electrically assisted heating device is used to heat the metal pipes through the principle of electromagnetic induction. The device includes a sleeve, a coil, a temperature detection unit and a controller. Automatic control is achieved using the temperature detection unit and a controller to ensure uniform and efficient heating.
It achieves a more uniform heating and high heating efficiency, which is more energy-saving than traditional resistive wire devices, reduces maintenance costs, and can be automatically controlled to avoid excessive heating and waste of electricity.
Smart Images
Figure CN222650833U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline liquid transportation, in particular to an electric auxiliary heating device for a metal pipeline. Background Art
[0002] Under low temperature conditions, water or other liquids in the pipes may freeze, causing the pipes to be unable to transport liquids normally, affecting production and life, and for fire protection pipes, it may also affect fire safety. In addition, the pipes themselves may also rupture due to the expansion of frozen liquids, causing a large amount of liquid transported in the pipes to leak, which requires timely repair.
[0003] In order to prevent the liquid in the pipeline from freezing at low temperatures, the engineering generally adopts the method of adding external insulation and / or adding electric auxiliary heating devices. Specifically, the electric auxiliary heating device can be a resistance wire wrapped around the outside of the pipeline, and a layer of insulation material is wrapped around the outside of the resistance wire. The resistance wire is energized to generate heat, and the heat is transferred to the liquid in the pipeline through the pipeline, so that the liquid temperature is always kept above the freezing point to prevent the liquid from freezing. Utility Model Content
[0004] The applicant found in actual operation that the heat generated by the resistance wire after being energized heats up the pipe and liquid through heat transfer. This heating method is very inefficient, and when the resistance wire is not tightly fitted to the pipe, it is difficult for the heat to be transferred to the pipe and the liquid in the pipe. Moreover, the resistance wire is generally spirally wound on the outside of the pipe, and the heating effect is closely related to the spiral spacing of the resistance wire. If the spacing is too large, it may cause uneven heating, and some pipes and liquids cannot be effectively heated; if the spacing is too small, the construction cost will increase. In addition, because the resistance wire is wound between the pipe and the insulation material, when the resistance wire breaks, shorts, or other faults require repair or replacement, the external insulation layer must be destroyed first, which also increases the maintenance cost. Finally, these electric auxiliary heating devices do not have temperature monitoring devices, and cannot achieve automatic control of start and stop. They consume a lot of electricity and cannot achieve energy-saving effects.
[0005] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiment of the utility model is to provide an electric auxiliary heating device for a metal pipe, which can solve the problems of low heating efficiency and uneven heating of the existing resistance wire type electric auxiliary heating device for pipes.
[0006] The specific technical solution of the embodiment of the utility model is:
[0007] A metal pipeline electric auxiliary heating device, the metal pipeline electric auxiliary heating device comprising:
[0008] A sleeve body, wherein the sleeve body has a through channel, and a coil is arranged in the sleeve body, and when the coil is energized, the coil is used to generate a magnetic field in the channel area so as to increase the temperature of the metal in the channel area;
[0009] A first temperature detection unit, which is arranged on the outer side wall of the casing;
[0010] A controller is electrically connected to the coil and the first temperature detection unit, respectively. The controller controls the metal pipe electric auxiliary heating device to have a heating state. When the metal pipe electric auxiliary heating device is in the heating state, the temperature detected by the first temperature detection unit and received by the controller is less than or equal to a first preset temperature, and the coil is in a power-on state.
[0011] Preferably, the sleeve body is made of non-metallic material.
[0012] Preferably, the channel of the sleeve is used for passing a metal pipe.
[0013] Preferably, the metal pipe electric auxiliary heating device further comprises:
[0014] A second temperature detection unit electrically connected to the controller is disposed on the inner side wall of the sleeve.
[0015] Preferably, the metal pipe electric auxiliary heating device further comprises:
[0016] A power interface component is arranged on the outer side wall of the sleeve, and the power interface component is electrically connected to the controller. When the metal pipe electric auxiliary heating device is in a heating state, the controller controls the electrical connection between the coil and the power interface component.
[0017] Preferably, the controller controls the metal pipe electric auxiliary heating device to have a closed state. When the metal pipe electric auxiliary heating device is in the closed state, the temperature detected by the second temperature detection unit received by the controller is greater than a second preset temperature, the coil is in a power-off state, and the second preset temperature is greater than or equal to the first preset temperature.
[0018] Preferably, the first preset temperature is the freezing point of the liquid flowing through the metal pipe.
[0019] Preferably, the controller comprises a communication module, and the communication module is used for wired communication or wireless communication.
[0020] Preferably, the coil is spirally arranged inside the side wall of the sleeve with the axis of the sleeve as the center.
[0021] Preferably, the shape of the radial cross section of the channel is the same as the shape of the radial cross section of the metal pipe.
[0022] Preferably, an elastic member is provided between the second temperature detection unit and the inner side wall of the sleeve body, so that the second temperature detection unit can abut against the outer side wall of the metal pipe.
[0023] The technical solution of the utility model has the following significant beneficial effects:
[0024] The metal pipe electric auxiliary heating device in this application heats the metal pipe through the principle of electromagnetic induction, and the heating is more uniform and efficient, which is more energy-saving than the traditional resistance wire type pipe electric auxiliary heating device; secondly, the device detects the ambient temperature and the temperature of the metal pipe respectively through the first temperature detection unit and the second temperature detection unit, and then the controller realizes automatic control to prevent the metal pipe from being overheated and avoids the waste of electric energy. Finally, the device can be installed outside the insulation layer of the metal pipe, which is convenient for maintenance and will not cause damage to the insulation layer.
[0025] With reference to the following description and drawings, specific embodiments of the present invention are disclosed in detail, indicating the manner in which the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Features described and / or shown for one embodiment can be used in one or more other embodiments in the same or similar manner, combined with features in other embodiments, or replace features in other embodiments. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the components in the drawings are only for illustration purposes to help understand the present invention, and are not intended to specifically limit the shapes and proportional dimensions of the components of the present invention. Under the guidance of the present invention, those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to specific circumstances.
[0027] Figure 1 It is a schematic diagram of the structure of the electric auxiliary heating device for metal pipes in an embodiment of the utility model.
[0028] Reference numerals in the above drawings:
[0029] 1. casing; 11. channel; 2. power interface assembly; 3. controller; 4. first temperature detection unit; 5. second temperature detection unit. DETAILED DESCRIPTION
[0030] In combination with the accompanying drawings and the description of the specific embodiments of the present invention, the details of the present invention can be more clearly understood. However, the specific embodiments of the present invention described herein are only used to explain the purpose of the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should be regarded as belonging to the scope of the present invention. It should be noted that when an element is referred to as "disposed on" another element, it can be directly on the other element or there can also be a central element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a central element at the same time. The terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for illustrative purposes and do not represent the only implementation method.
[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0032] In order to solve the problems of low heating efficiency and uneven heating of existing resistance wire type pipeline electric auxiliary heating devices, an electric auxiliary heating device for metal pipelines is proposed in the embodiment of the present application. Figure 1 Schematic diagram of the structure of the electric auxiliary heating device for metal pipes in the embodiment of the utility model. Figure 1 As shown, the metal pipe electric auxiliary heating device may include: a sleeve 1 having a coil, a first temperature detection unit 4 and a controller 3.
[0033] like Figure 1 As shown, the casing 1 has a through passage 11. The passage 11 of the casing 1 is used for passing a metal pipe.
[0034] As a feasible method, the shape of the radial cross section of the channel 11 can be the same as the shape of the radial cross section of the metal pipe. In this way, the inner wall of the sleeve 1 can be closer to the metal pipe, thereby improving the heating efficiency of the metal pipe electric auxiliary heating device for the metal pipe.
[0035] The sleeve 1 is provided with a coil, which is a conductive coil. When the coil is powered on, it is used to generate a magnetic field in the area of the channel 11, so as to increase the temperature of the metal in the area of the channel 11. When the metal pipe is inserted into the channel 11, the coil can increase the temperature of the metal pipe when powered on, and the fluid flowing through the metal pipe can be increased by heat conduction.
[0036] As a feasible method, the coil can be spirally arranged in the side wall of the sleeve 1 with the axis of the sleeve 1 as the center, so that the magnetic field generated by the coil can evenly heat different positions of the metal pipe.
[0037] As a feasible method, in order to prevent the coil from heating the casing 1 when energized, the casing 1 can be made of non-metallic material. The above method can save energy consumption of the metal pipeline electric auxiliary heating device.
[0038] like Figure 1 As shown, the first temperature detection unit 4 can be arranged at the outer side wall of the casing 1 , and the first temperature detection unit 4 is used to detect the ambient temperature outside the casing 1 .
[0039] The controller 3 is electrically connected to the coil and the first temperature detection unit 4, respectively. The controller 3 controls whether the coil is powered on according to the first temperature detection unit 4, thereby saving energy. The controller 3 can control the metal pipe electric auxiliary heating device to have a heating state. When the metal pipe electric auxiliary heating device is in the heating state, the temperature detected by the first temperature detection unit 4 received by the controller 3 is less than or equal to the first preset temperature, and the coil is in the powered state.
[0040] The first temperature detection unit 4 is disposed on the outer wall of the casing 1 , which can be understood as the first temperature detection unit 4 can be directly disposed on the outer wall of the casing 1 , or can be disposed on the controller 3 , and the controller 3 is disposed on the outer wall of the casing 1 .
[0041] As a feasible embodiment, the first preset temperature may be the freezing point temperature of the liquid flowing through the metal pipe. In this way, energy can be saved to the maximum extent. In other feasible embodiments, the first preset temperature may be a temperature slightly higher than the freezing point temperature of the liquid flowing through the metal pipe.
[0042] As feasible, Figure 1 As shown, the metal pipe electric auxiliary heating device may include: a second temperature detection unit 5, which is arranged at the inner side wall of the casing 1. The second temperature detection unit 5 is used to detect the temperature at the outer side wall of the metal pipe. The second temperature detection unit 5 can be electrically connected to the controller 3, so that the controller 3 can receive the temperature at the outer side wall of the metal pipe detected by the second temperature detection unit 5.
[0043] As a feasible method, an elastic member may be provided between the second temperature detection unit 5 and the side wall of the channel 11, so that the second temperature detection unit 5 can be pressed against the outer wall of the metal pipe. In this way, the second temperature detection unit 5 can accurately detect the temperature of the outer wall of the metal pipe.
[0044] As feasible, Figure 1 As shown, the metal pipe electric auxiliary heating device may include: a power interface component 2, which is arranged at the outer side wall of the casing 1. The power interface component 2 is used to connect with the wire so as to connect with the power supply. The power interface component 2 is electrically connected to the controller 3. When the metal pipe electric auxiliary heating device is in the heating state, the controller 3 controls the electrical connection between the coil and the power interface component 2.
[0045] As feasible, the controller 3 can control the metal pipe electric auxiliary heating device to have an off state. When the metal pipe electric auxiliary heating device is in the off state, the temperature detected by the second temperature detection unit 5 received by the controller 3 is greater than the second preset temperature, and the coil is in a power-off state. That is, the controller 3 controls the coil to be disconnected from the power interface component 2. The second preset temperature may be greater than or equal to the first preset temperature.
[0046] As a feasible method, the controller 3 may include a communication module, and the communication module is used for wired communication or wireless communication, so as to realize the communication between the metal pipe electric auxiliary heating device and other equipment, so as to remotely display the working state of the metal pipe electric auxiliary heating device. When wired communication is performed, the controller 3 is provided with a communication connection interface, so as to perform wired connection with other equipment.
[0047] The metal pipe electric auxiliary heating device in the present application can be installed on the outside of the metal pipe, or on the outside of the metal pipe insulation material, and the external power supply is connected to the power interface component 2 to power the device. The first temperature detection unit 4 is used to detect the ambient temperature outside the casing 1. When the temperature detected by the first temperature detection unit 4 received by the controller 3 is less than or equal to the first preset temperature, the controller 3 can control the metal pipe electric auxiliary heating device to enter the heating state, and the coil enters the power-on state. The coil is energized to generate a magnetic field in the area of the channel 11, so that the metal pipe in the area of the channel 11 is heated, and the fluid flowing through the metal pipe is heated by heat conduction. The second temperature detection unit 5 is used to detect the temperature at the outer wall of the metal pipe. When the temperature detected by the second temperature detection unit 5 is greater than the second preset temperature, the controller 3 can control the metal pipe electric auxiliary heating device to enter the closed state, and the coil enters the power-off state, thereby stopping heating the metal pipe, which can achieve the purpose of energy saving.
[0048] The metal pipe electric auxiliary heating device in the present application heats the metal pipe by electromagnetic induction principle, and the heating is more uniform and efficient, which is more energy-saving than the traditional resistance wire type pipe electric auxiliary heating device; secondly, the device detects the ambient temperature and the temperature of the metal pipe respectively by the first temperature detection unit 4 and the second temperature detection unit 5, and then the controller 3 realizes automatic control to prevent the metal pipe from being overheated and avoids the waste of electric energy. Finally, the device can be installed outside the insulation layer of the metal pipe, which is convenient for maintenance and will not cause damage to the insulation layer.
[0049] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.
[0050] The above are only a few embodiments of the present invention. Although the embodiments disclosed by the present invention are as above, the contents are only embodiments adopted for facilitating the understanding of the present invention and are not used to limit the present invention. Any technician in the technical field to which the present invention belongs can make any modification and change in the form and details of the implementation without departing from the spirit and scope disclosed by the present invention, but the scope of patent protection of the present invention shall still be subject to the scope defined by the attached claims.
Claims
1. A metal pipe electric auxiliary heating device, characterized in that: The metal pipeline electric auxiliary heating device comprises: A sleeve body, wherein the sleeve body has a through channel, and a coil is arranged in the sleeve body, and when the coil is energized, the coil is used to generate a magnetic field in the channel area so as to increase the temperature of the metal in the channel area; A first temperature detection unit, which is arranged on the outer side wall of the casing; a controller, which is electrically connected to the coil and the first temperature detection unit, respectively, and the controller controls the metal pipe electric auxiliary heating device to have a heating state. When the metal pipe electric auxiliary heating device is in the heating state, the temperature detected by the first temperature detection unit received by the controller is less than or equal to a first preset temperature, and the coil is in a power-on state; The metal pipeline electric auxiliary heating device also includes: A second temperature detection unit electrically connected to the controller is arranged at the inner wall of the sleeve; an elastic member is arranged between the second temperature detection unit and the inner wall of the sleeve so that the second temperature detection unit can be pressed against the outer wall of the metal pipe.
2. The metal pipe electric auxiliary heating device according to claim 1, characterized in that: The sleeve body is made of non-metallic material.
3. The metal pipe electric auxiliary heating device according to claim 1, characterized in that: The channel of the sleeve is used for passing a metal pipe.
4. The metal pipe electric auxiliary heating device according to claim 1, characterized in that: The metal pipeline electric auxiliary heating device also includes: A power interface component is arranged on the outer side wall of the sleeve, and the power interface component is electrically connected to the controller. When the metal pipe electric auxiliary heating device is in a heating state, the controller controls the electrical connection between the coil and the power interface component.
5. The metal pipe electric auxiliary heating device according to claim 1, characterized in that: The controller controls the metal pipe electric auxiliary heating device to have a closed state. When the metal pipe electric auxiliary heating device is in the closed state, the temperature detected by the second temperature detection unit received by the controller is greater than a second preset temperature, the coil is in a power-off state, and the second preset temperature is greater than or equal to the first preset temperature.
6. The metal pipe electric auxiliary heating device according to claim 3, characterized in that: The first preset temperature is the freezing point of the liquid flowing through the metal pipe.
7. The metal pipe electric auxiliary heating device according to claim 1, characterized in that: The controller includes a communication module, and the communication module is used for wired communication or wireless communication.
8. The metal pipe electric auxiliary heating device according to claim 1, characterized in that: The coil is spirally arranged inside the side wall of the sleeve body with the axis of the sleeve body as the center.
9. The metal pipe electric auxiliary heating device according to claim 3, characterized in that: The shape of the radial cross section of the channel is the same as the shape of the radial cross section of the metal pipe.