CN119403002A - Industrial electric heating tube - Google Patents
Industrial electric heating tube Download PDFInfo
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- CN119403002A CN119403002A CN202510009236.XA CN202510009236A CN119403002A CN 119403002 A CN119403002 A CN 119403002A CN 202510009236 A CN202510009236 A CN 202510009236A CN 119403002 A CN119403002 A CN 119403002A
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- Prior art keywords
- core rod
- temperature sensing
- conductive
- heating
- wire
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/40—Heating elements having the shape of rods or tubes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/18—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a linear resistance, e.g. platinum resistance thermometer
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Resistance Heating (AREA)
Abstract
本发明涉及电加热技术领域，提出一种工业电热管，包括设有发热总成与感温总成的管体，管体内设有用于容纳安装发热总成与感温总成的内腔，感温总成的测温端处于在管体内部中间位置上，和/或感温总成的测温端处于发热总成的中间位置上；发热总成中间位置上设有与感温总成测温端连接的定位环，感温总成通过定位环固定在发热总成中间位置上，工业电热管在电加热过程中，感温总成测温端对工业电热管发热段的中部位置进行测温。发热总成外侧设有与感温总成测温端连接的定位环，使感温总成的测温端设置在发热总成中间位置上，感温线测温更准确。
The present invention relates to the technical field of electric heating, and proposes an industrial electric heating pipe, comprising a pipe body provided with a heating assembly and a temperature sensing assembly, the pipe body being provided with an inner cavity for accommodating and installing the heating assembly and the temperature sensing assembly, the temperature measuring end of the temperature sensing assembly being located in the middle position inside the pipe body, and/or the temperature measuring end of the temperature sensing assembly being located in the middle position of the heating assembly; a positioning ring connected to the temperature measuring end of the temperature sensing assembly is provided in the middle position of the heating assembly, the temperature sensing assembly is fixed in the middle position of the heating assembly through the positioning ring, and during the electric heating process of the industrial electric heating pipe, the temperature measuring end of the temperature sensing assembly measures the temperature of the middle position of the heating section of the industrial electric heating pipe. A positioning ring connected to the temperature measuring end of the temperature sensing assembly is provided on the outside of the heating assembly, so that the temperature measuring end of the temperature sensing assembly is set in the middle position of the heating assembly, and the temperature sensing line measures the temperature more accurately.
Description
Technical Field
The invention relates to the technical field of electric heating, in particular to an industrial electric heating tube.
Background
The temperature measuring end of the temperature sensing wire of the existing industrial electric heating tube is usually arranged at the head or tail position of the industrial electric heating tube, and the middle position of the industrial electric heating tube generates heat at the highest temperature. Therefore, when the temperature measuring end of the temperature sensing wire is arranged at the head or tail of the industrial electric heating tube, the temperature of the industrial electric heating tube is inaccurately measured by the temperature sensing wire.
Thus, there is a need for further improvement.
Disclosure of Invention
The invention provides an industrial electric heating tube, wherein a positioning ring connected with a temperature measuring end of a temperature sensing assembly is arranged on the outer side of the heating assembly, so that the temperature measuring end of the temperature sensing assembly is arranged at the middle position of the heating assembly, and the temperature of a temperature sensing wire is more accurate.
An industrial electric heating tube designed according to the purpose comprises a tube body provided with a heating assembly and a temperature sensing assembly, wherein an inner cavity for accommodating and installing the heating assembly and the temperature sensing assembly is arranged in the tube body, a temperature measuring end of the temperature sensing assembly is positioned at the middle position in the tube body, and/or the temperature measuring end of the temperature sensing assembly is positioned at the middle position of the heating assembly;
the middle position of the heating assembly is provided with a positioning ring connected with the temperature measuring end of the temperature sensing assembly, the temperature sensing assembly is fixed on the middle position of the heating assembly through the positioning ring, and the temperature measuring end of the temperature sensing assembly measures the temperature of the middle position of the heating section of the industrial electric heating tube in the electric heating process.
The positioning ring is made of conductive materials, the temperature measuring end of the temperature sensing assembly comprises an anode temperature measuring end and a cathode temperature measuring end, the anode temperature measuring end and the cathode temperature measuring end are respectively connected with the positioning ring, and the anode temperature measuring end and the cathode temperature measuring end are in conductive connection through the positioning ring.
The temperature sensing assembly comprises an anode temperature sensing wire and a cathode temperature sensing wire, wherein the end part of the anode temperature sensing wire is connected with the positioning ring, the end part of the cathode temperature sensing wire is connected with the positioning ring, the end part of the anode temperature sensing wire forms an anode temperature measuring end, and the end part of the cathode temperature sensing wire forms a cathode temperature measuring end;
the positioning ring is provided with an insulating part, the insulating part is provided with a through hole for penetrating through the conducting part, the positioning ring is sleeved outside the insulating part, and the positive electrode temperature measuring end and the negative electrode temperature measuring end are separated from the conducting part through the insulating part.
The insulation piece is provided with a first notch corresponding to the positive electrode temperature measuring end, the insulation piece is provided with a second notch corresponding to the negative electrode temperature measuring end, when the positive electrode temperature measuring end is connected with the positioning ring, the positive electrode temperature measuring end is limited between the first notch and the inner side of the positioning ring, and when the negative electrode temperature measuring end is connected with the positioning ring, the negative electrode temperature measuring end is limited between the second notch and the inner side of the positioning ring.
The heating assembly comprises a core rod which is arranged in a split mode, the core rod comprises a first core rod and a second core rod, the lengths of pipe bodies of the first core rod and the second core rod are equal, the positioning ring is arranged between the first core rod and the second core rod, and the positioning ring is clamped by the first core rod and the second core rod up and down so that the temperature sensing assembly connected with the positioning ring is located at the middle position of the heating assembly.
The heating assembly comprises a first core rod, a first temperature sensing wire inserting cavity for inserting the positive temperature sensing wire is formed in the first core rod, a second temperature sensing wire inserting cavity for inserting the negative temperature sensing wire is formed in the first core rod, the first temperature sensing wire inserting cavity is communicated with the first notch, and the second temperature sensing wire inserting cavity is communicated with the second notch.
The first core rod and the second core rod are respectively provided with a first conductive inserting cavity and a second conductive inserting cavity;
The insulating piece is provided with a first via hole and a second via hole, wherein the first via hole is communicated with the first conductive plug cavity, and the second via hole is communicated with the second conductive plug cavity;
The conductive member comprises a first conductive member inserted into the first conductive plug cavity and the first via hole, and a second conductive member inserted into the second conductive plug cavity and the second via hole.
Heating wires are arranged on the first core rod and the second core rod, and conductive connection is formed between the heating wires and the conductive piece;
The first conductive piece and the second conductive piece penetrating through the tail end of the second core rod are both provided with a first insulating sleeve.
The first core rod is provided with a first avoidance lower notch and a first avoidance upper notch, the first avoidance lower notch is communicated with a first core rod second conductive plug cavity, the first avoidance upper notch is communicated with the first core rod first conductive plug cavity, the second core rod is provided with a second avoidance upper notch and a second avoidance lower notch, the second avoidance upper notch is communicated with a second core rod first conductive plug cavity, and the second avoidance lower notch is communicated with a second core rod second conductive plug cavity;
The heating wire comprises a first heating wire wound on the outer side of the first core rod and a second heating wire wound on the outer side of the second core rod;
The first heating wire end part wound on the outer side of the first core rod is inserted into the first conductive inserting cavity of the first core rod through the first avoidance upper notch and forms a first inner tube heating wire, and the first inner tube heating wire is in conductive contact with the first conductive piece;
The first end part of the second heating wire wound on the outer side of the second core rod is inserted into the first conductive inserting cavity of the second core rod through the second avoidance upper notch and forms a third inner tube heating wire, the third inner tube heating wire and the first conductive piece form conductive contact, the tail end part of the second heating wire wound on the outer side of the second core rod is inserted into the second conductive inserting cavity of the second core rod through the second avoidance lower notch and forms a fourth inner tube heating wire, and the fourth inner tube heating wire and the second conductive piece form conductive contact.
One end of the tube body is a sealing end, the other end of the tube body is provided with a sealing element, the sealing element is provided with a perforation corresponding to each temperature sensing wire and the conducting element, and the anode temperature sensing wire and the cathode temperature sensing wire penetrating through the tail end of the second core rod are provided with second insulating sleeves;
The inner cavity of the pipe body is provided with magnesia powder, the magnesia powder fills the gap between the core rod and the inner cavity of the pipe body, the core rod and the temperature sensing assembly positioned on the core rod are packaged in the inner cavity of the pipe body through a sealing piece, and a sealing structure for preventing the magnesia powder from leaking out of the inner cavity of the pipe body is formed between the insulating sleeve and the corresponding perforation.
The beneficial technical effects of the invention are as follows:
The heating assembly outside is equipped with the holding ring of being connected with the temperature measurement end of temperature sensing assembly, makes the temperature measurement end setting of temperature sensing assembly on the intermediate position of heating assembly, and the temperature measurement of temperature sensing line is more accurate, and the heating assembly is including the first plug and the second plug that set up in segmentation, and the holding ring is installed between first plug and second plug, upper and lower centre gripping holding ring between first plug and the second plug, and the holding ring exempts from the screw to install between first plug and second plug, and temperature sensing line and holding ring welding are fixed, and on the one hand temperature measurement is more accurate, and on the other hand plays fixed temperature sensing line effect.
The insulating piece used for penetrating the conductive piece is arranged on the positioning ring, the temperature sensing wire is separated from the conductive piece through the insulating piece, the temperature sensing wire is prevented from contacting the conductive piece, and the phenomenon that the electric heating tube cannot work normally is avoided.
The temperature sensing wire passing through the tail end of the first core rod and the conductive piece are inserted into the corrugated pipe, and no blocking structure is arranged in the corrugated pipe, so that the temperature sensing wire passing through the tail end of the first core rod and the conductive piece are both provided with an insulating sleeve, conductive contact between the temperature sensing wire and the conductive piece is prevented, the corrugated pipe is made of metal, and the insulating sleeve can also prevent the temperature sensing wire and the conductive piece from being respectively in conductive contact with the inner wall of the corrugated pipe.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic perspective view of an industrial electric heating tube according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view illustrating a winding arrangement of an outer tube heating wire according to an embodiment of the present invention.
Fig. 3 is an enlarged view at a in fig. 2.
Fig. 4 is an enlarged view at B in fig. 2.
Fig. 5 is a schematic perspective view illustrating a positioning ring disposed between a first mandrel and a second mandrel according to an embodiment of the present invention.
FIG. 6 is a schematic diagram of an assembly and disassembly structure of an industrial electric heating tube heating assembly according to an embodiment of the invention.
Fig. 7 is a schematic view of a three-dimensional cross-sectional structure of a pipe body according to an embodiment of the present invention.
Fig. 8 is a schematic structural diagram of a heating wire and a conductive member of a mandrel according to an embodiment of the invention.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. In order that the above objects, features and advantages of the application will be more readily understood, numerous specific details are set forth in the following description in order to provide a thorough understanding of the application. The present application may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the application, whereby the application is not limited to the specific embodiments disclosed below.
Referring to fig. 1-8, an industrial electric heating tube comprises a tube body 1 provided with a heating assembly 2 and a temperature sensing assembly 3, wherein an inner cavity for accommodating and installing the heating assembly 2 and the temperature sensing assembly 3 is arranged in the tube body 1, a temperature measuring end of the temperature sensing assembly 3 is positioned at the middle position in the tube body 1, and/or a temperature measuring end of the temperature sensing assembly 3 is positioned at the middle position of the heating assembly 2;
The middle position of the heating assembly 2 is provided with a positioning ring 4 connected with the temperature measuring end of the temperature sensing assembly 3, the temperature sensing assembly 3 is fixed on the middle position of the heating assembly 2 through the positioning ring 4, and the temperature measuring end of the temperature sensing assembly 3 measures the temperature of the middle position of the heating section of the industrial electric heating tube in the electric heating process.
The positioning ring 4 is made of conductive materials, the temperature measuring end of the temperature sensing assembly 3 comprises an anode temperature measuring end 5 and a cathode temperature measuring end 6, the anode temperature measuring end 5 and the cathode temperature measuring end 6 are respectively connected with the positioning ring 4, and the anode temperature measuring end 5 and the cathode temperature measuring end 6 are in conductive connection through the positioning ring 4.
The temperature sensing assembly 3 comprises a positive temperature sensing wire 7 and a negative temperature sensing wire 8, wherein the end part of the positive temperature sensing wire 7 is connected with the positioning ring 4, the end part of the negative temperature sensing wire 8 is connected with the positioning ring 4, the end part of the positive temperature sensing wire 7 forms a positive temperature measuring end 5, and the end part of the negative temperature sensing wire 8 forms a negative temperature measuring end 6;
the positioning ring 4 is provided with an insulating part 9, the insulating part 9 is provided with a through hole for penetrating through the conducting part, the positioning ring 4 is sleeved outside the insulating part 9, and the positive electrode temperature measuring end 5 and the negative electrode temperature measuring end 6 are separated from the conducting part through the insulating part 9.
The insulator 9 is provided with a first notch 12 corresponding to the positive temperature measuring end 5, the insulator 9 is provided with a second notch 13 corresponding to the negative temperature measuring end 6, when the positive temperature measuring end 5 is connected with the positioning ring 4, part of the positive temperature measuring end 5 is limited between the first notch 12 and the inner side of the positioning ring 4, and when the negative temperature measuring end 6 is connected with the positioning ring 4, part of the negative temperature measuring end 6 is limited between the second notch 13 and the inner side of the positioning ring 4.
In this embodiment, the positive electrode temperature measuring end 5 and the negative electrode temperature measuring end 6 can be electrically connected through the positioning ring 4, so as to measure the resistance value of the temperature sensing wire in the electric heating process of the electric heating tube.
In this embodiment, the temperature sensing line temperature measurement principle is based on the change of resistance of the material with the change of temperature. when the temperature sensing wire is in contact with the object to be measured, it is affected by the temperature of the object, thereby changing its resistance value. By measuring the resistance value of the temperature sensing wire, the temperature of the measured object can be indirectly known, so that the heating temperature of the industrial electric heating tube can be indirectly measured in a heat transfer mode.
The principle of operation of the temperature sensing wire can be explained by ohm's law and thermoelectric effect. The relationship between resistance and current and voltage is proportional according to ohm's law. When the current passing through the temperature sensing line is kept unchanged, the resistance value of the temperature sensing line is increased along with the increase of the temperature, and conversely, the resistance value is reduced due to the decrease of the temperature. In addition, thermoelectric effects refer to differences in thermoelectric forces generated in materials at different temperatures, which differences can be used to measure temperature.
The temperature sensing wire is typically made of conductive materials, commonly used materials include copper, nickel, and platinum, which have good electrical conductivity and stable electrical resistance characteristics. The temperature sensing wire consists of metal wires and insulating sleeves, the diameter of the metal wires is small, and the metal wires are connected with a computer through a circuit. When the temperature rises, the resistance of the lead wire increases, and the resistance signal is converted into a temperature signal through the circuit, so that the temperature measurement can be realized.
In this embodiment, the positive electrode temperature measurement end 5 and the negative electrode temperature measurement end 6 are symmetrically fixed on the inner side of the positioning ring 4.
In this embodiment, the insulating member 9 is made of ceramic, the outer ring of the insulating member 9 is in an annular structure with a notch, and the notch is used for avoiding connection between the temperature sensing wire and the positioning ring.
The heating assembly 2 comprises a core rod which is arranged in a split mode, the core rod comprises a first core rod 14 and a second core rod 15, the lengths of pipe bodies of the first core rod 14 and the second core rod 15 are equal, the positioning ring 4 is arranged between the first core rod 14 and the second core rod 15, and the positioning ring 4 is clamped by the first core rod 14 and the second core rod 15 up and down so that the temperature sensing assembly 3 connected with the positioning ring 4 is located in the middle of the heating assembly 2.
The heating assembly 2 comprises a first core rod 14, a first temperature sensing wire inserting cavity 16 for inserting the positive temperature sensing wire 7 is formed in the first core rod 14, a second temperature sensing wire inserting cavity 17 for inserting the negative temperature sensing wire 8 is formed in the first core rod 14, the first temperature sensing wire inserting cavity 16 is communicated with the first notch 12, and the second temperature sensing wire inserting cavity 17 is communicated with the second notch 13.
The first core rod 14 and the second core rod 15 are respectively provided with a first conductive inserting cavity 18 and a second conductive inserting cavity 19;
the insulating piece 9 is provided with a first via hole 10 and a second via hole 11, wherein the first via hole 10 is communicated with a first conductive plug cavity 18, and the second via hole 11 is communicated with a second conductive plug cavity 19;
the conductive members include a first conductive member 20 inserted into the first conductive socket 18 and the first via 10, and a second conductive member 21 inserted into the second conductive socket 19 and the second via 11.
Heating wires are arranged on the first core rod 14 and the second core rod 15, and conductive connection is formed between the heating wires and the conductive piece;
the first conductive member 20 and the second conductive member 21 passing through the end of the second mandrel 15 are each provided with a first insulating sheath.
The first core rod 14 is provided with a first avoidance lower notch 23 and a first avoidance upper notch 32, the first avoidance lower notch 23 is communicated with a second conductive plug cavity 19 of the first core rod 14, the first avoidance upper notch 32 is communicated with a first conductive plug cavity 18 of the first core rod 14, the second core rod 15 is provided with a second avoidance upper notch 24 and a second avoidance lower notch 31, the second avoidance upper notch 24 is communicated with a first conductive plug cavity 18 of the second core rod 15, and the second avoidance lower notch 31 is communicated with a second conductive plug cavity 19 of the second core rod 15;
the heating wire comprises a first heating wire 34 wound on the outer side of the first core rod 14, and a second heating wire 33 wound on the outer side of the second core rod 15;
The first heating wire 34 around the outer side of the first core rod 14 is inserted into the first conductive inserting cavity 18 of the first core rod 14 through the first avoidance upper notch 32 and forms a first inner tube heating wire 28, and the first inner tube heating wire 28 is in conductive contact with the first conductive member 20;
The first end part of the second heating wire 33 wound on the outer side of the second core rod 15 is inserted into the first conductive inserting cavity 18 of the second core rod 15 through the second avoidance upper notch 24 and forms a third inner tube heating wire 35, the third inner tube heating wire 35 is in conductive contact with the first conductive member 20, the end part of the second heating wire 33 wound on the outer side of the second core rod 15 is inserted into the second conductive inserting cavity 19 of the second core rod 15 through the second avoidance lower notch 31 and forms a fourth inner tube heating wire 36, and the fourth inner tube heating wire 36 is in conductive contact with the second conductive member 21.
In this embodiment, the second avoidance lower notch 31 of the second core rod 15 is close to the top of the positioning ring 4, in order to prevent the fourth inner tube heating wire 36 from contacting with the positioning ring 4, the second avoidance lower notch 31 is filled with magnesium powder or a ceramic member, so as to prevent the contact between the fourth inner tube heating wire 36 and the positioning ring 4.
In this embodiment, the first avoidance upper notch 32 is close to the bottom of the positioning ring 4, so as to prevent the first inner tube heating wire 28 from contacting the positioning ring 4, and the first avoidance upper notch 32 is filled with magnesium powder or a ceramic piece, so as to prevent the first inner tube heating wire 28 from contacting the positioning ring 4.
One end of the pipe body 1 is a sealing end, the other end of the pipe body 1 is provided with a sealing element 25, the sealing element 25 is provided with a perforation corresponding to each temperature sensing wire and the conducting element, and a positive temperature sensing wire 7 and a negative temperature sensing wire 8 penetrating through the tail end of the second core rod 15 are provided with second insulation sleeves;
the inner cavity of the pipe body 1 is provided with magnesia powder, the magnesia powder fills the gap between the core rod and the inner cavity of the pipe body 1, the core rod and the temperature sensing assembly 3 positioned on the core rod are packaged in the inner cavity of the pipe body 1 through the sealing piece 25, wherein a sealing structure for blocking the magnesia powder from leaking out of the inner cavity of the pipe body 1 is formed between the insulating sleeve and the corresponding perforation.
Or the heating wire wound and inserted on each core rod has high tension degree, and can not move on the core rod, so that the heating wire is prevented from being contacted with the positioning ring 4.
In the present embodiment, the heating wires wound around the outer sides of the first core rod 14 and the second core rod 15 form an outer tube heating wire.
In this embodiment, the heating wire is an antioxidant nickel-chromium heating wire, the high temperature strength of the antioxidant nickel-chromium heating wire is higher than that of iron-chromium-aluminum, the antioxidant nickel-chromium heating wire is not easy to deform under high temperature use, the structure of the antioxidant nickel-chromium heating wire is not easy to change, the plasticity is good, the repair is easy, the emissivity is high, the nonmagnetic property is strong, the corrosion resistance is long, the service life is long, the nickel-chromium alloy has good wear resistance, the good mechanical property can be kept for a long time, and the service life is prolonged.
In this embodiment, the core rod is made of a magnesia tube, and the high temperature resistant magnesia tube is used because the heating temperature of the electric heating tube is high.
In this embodiment, the corrugated tube 26 is disposed on the tube body 1, and the connector 28 is disposed between the tube body 1 and the corrugated tube 26, and the tube body 1 and the corrugated tube 26 can be connected by the screw structure and the connector 28.
In this embodiment, the connector 28 has a hollow structure, and an internal threaded cavity is provided in the connector 28.
In this embodiment, the bellows 26 is provided at one end with an outlet fitting 27.
In the present embodiment, the temperature sensing wire and the conductive member passing through the end of the first core rod 14 are led out of the electrothermal tube along the connector 28, the bellows 26 and the outlet connector 27.
The second core rod 15 does not need to be inserted with a temperature sensing wire, so that the material of the temperature sensing wire is effectively saved, the temperature measuring end of the temperature sensing wire is moved to the middle position of the core rod, and the temperature measurement is more accurate.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
In the above description of the present application, it should be understood that, if there are such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., these terms refer to the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the terms "plurality" and "a plurality" if any, mean at least two, such as two, three, etc., unless specifically defined otherwise.
In the above description of the present application, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly. For example, the connection may be fixed by screws, rivets, welding, or the like, or may be detachable, or may be integrally formed by metal working (such as die casting, drawing, lathe, or the like), or may be mechanically or electrically connected, or may be directly or indirectly connected through an intermediate medium, or may be internal communication between two elements or interaction relationship between two elements, unless otherwise specifically defined. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
In the above description of the application, unless explicitly stated and limited otherwise, the presence of a first feature "on" or "under" a second feature, and the like, may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact via an intermediary. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that if an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. If an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein, if any, are for descriptive purposes only and do not represent a unique embodiment.
Claims (10)
1. An industrial electric heating tube comprises a tube body (1) provided with a heating assembly (2) and a temperature sensing assembly (3), wherein an inner cavity for accommodating and installing the heating assembly (2) and the temperature sensing assembly (3) is arranged in the tube body (1), and the industrial electric heating tube is characterized in that a temperature measuring end of the temperature sensing assembly (3) is positioned in the middle position inside the tube body (1) and/or a temperature measuring end of the temperature sensing assembly (3) is positioned in the middle position of the heating assembly (2);
The middle position of the heating assembly (2) is provided with a positioning ring (4) connected with the temperature measuring end of the temperature sensing assembly (3), the temperature sensing assembly (3) is fixed on the middle position of the heating assembly (2) through the positioning ring (4), and the temperature measuring end of the temperature sensing assembly (3) measures the temperature of the middle position of the industrial electric heating tube heating section in the electric heating process.
2. The industrial electric heating tube of claim 1, wherein the positioning ring (4) is made of conductive materials, the temperature measuring end of the temperature sensing assembly (3) comprises an anode temperature measuring end (5) and a cathode temperature measuring end (6), the anode temperature measuring end (5) and the cathode temperature measuring end (6) are respectively connected with the positioning ring (4), and the anode temperature measuring end (5) and the cathode temperature measuring end (6) are in conductive connection through the positioning ring (4).
3. The industrial electric heating tube according to claim 1, wherein the temperature sensing assembly (3) comprises a positive temperature sensing wire (7) and a negative temperature sensing wire (8), the end part of the positive temperature sensing wire (7) is connected with the positioning ring (4), the end part of the negative temperature sensing wire (8) is connected with the positioning ring (4), the end part of the positive temperature sensing wire (7) forms a positive temperature measuring end (5), and the end part of the negative temperature sensing wire (8) forms a negative temperature measuring end (6);
An insulating part (9) is arranged on the positioning ring (4), a through hole for penetrating through the conducting part is arranged on the insulating part (9), the positioning ring (4) is sleeved outside the insulating part (9), and the positive electrode temperature measuring end (5) and the negative electrode temperature measuring end (6) are separated from the conducting part through the insulating part (9).
4. The industrial electric heating tube of claim 3, wherein the insulating member (9) is provided with a first notch (12) corresponding to the positive electrode temperature measuring end (5), the insulating member (9) is provided with a second notch (13) corresponding to the negative electrode temperature measuring end (6), when the positive electrode temperature measuring end (5) is connected with the positioning ring (4), the positive electrode temperature measuring end (5) is partially limited between the first notch (12) and the inner side of the positioning ring (4), and when the negative electrode temperature measuring end (6) is connected with the positioning ring (4), the negative electrode temperature measuring end (6) is partially limited between the second notch (13) and the inner side of the positioning ring (4).
5. The industrial electric heating tube of claim 4, wherein the heating assembly (2) comprises split type core rods, the core rods comprise a first core rod (14) and a second core rod (15), the lengths of the first core rod (14) and the second core rod (15) are equal, the positioning ring (4) is arranged between the first core rod (14) and the second core rod (15), and the positioning ring (4) is clamped by the first core rod (14) and the second core rod (15) up and down so that the temperature sensing assembly (3) connected with the positioning ring (4) is located in the middle of the heating assembly (2).
6. The industrial electric heating tube according to claim 5, wherein the heating assembly (2) comprises a first core rod (14) provided with a first temperature sensing wire inserting cavity (16) for inserting the positive temperature sensing wire (7), the first core rod (14) is provided with a second temperature sensing wire inserting cavity (17) for inserting the negative temperature sensing wire (8), the first temperature sensing wire inserting cavity (16) is communicated with the first notch (12), and the second temperature sensing wire inserting cavity (17) is communicated with the second notch (13).
7. The industrial electric heating tube according to claim 6, wherein the first core rod (14) and the second core rod (15) are respectively provided with a first conductive inserting cavity (18) and a second conductive inserting cavity (19);
The insulating piece (9) is provided with a first via hole (10) and a second via hole (11), the first via hole (10) is communicated with the first conductive plug cavity (18), and the second via hole (11) is communicated with the second conductive plug cavity (19);
The conductive members include a first conductive member (20) inserted into the first conductive socket (18) and the first via (10), and a second conductive member (21) inserted into the second conductive socket (19) and the second via (11).
8. The industrial electric heating tube according to claim 7, wherein heating wires are arranged on the first core rod (14) and the second core rod (15), and the heating wires are electrically connected with the conductive member;
a first insulating sleeve is arranged on each of the first conductive member (20) and the second conductive member (21) penetrating through the tail end of the second core rod (15).
9. The industrial electric heating tube of claim 8, wherein the first core rod (14) is provided with a first avoidance lower notch (23) and a first avoidance upper notch (32), the first avoidance lower notch (23) is communicated with a second conductive plug cavity (19) of the first core rod (14), the first avoidance upper notch (32) is communicated with a first conductive plug cavity (18) of the first core rod (14), the second core rod (15) is provided with a second avoidance upper notch (24) and a second avoidance lower notch (31), the second avoidance upper notch (24) is communicated with the first conductive plug cavity (18) of the second core rod (15), and the second avoidance lower notch (31) is communicated with a second conductive plug cavity (19) of the second core rod (15);
the heating wire comprises a first heating wire (34) wound on the outer side of the first core rod (14) and a second heating wire (33) wound on the outer side of the second core rod (15);
The first heating wire (34) wound on the outer side of the first core rod (14) is inserted into the first conductive inserting cavity (18) of the first core rod (14) through the first avoidance upper notch (32) and forms a first inner tube heating wire (28), the first inner tube heating wire (28) is in conductive contact with the first conductive piece (20), the tail end part of the first heating wire (34) wound on the outer side of the first core rod (14) is inserted into the second conductive inserting cavity (19) of the first core rod (14) through the first avoidance lower notch (23) and forms a second inner tube heating wire (29), and the second inner tube heating wire (29) is in conductive contact with the second conductive piece (21);
The first end part of a second heating wire (33) wound on the outer side of the second core rod (15) is inserted into a first conductive inserting cavity (18) of the second core rod (15) through a second avoidance upper notch (24) and forms a third inner tube heating wire (35), the third inner tube heating wire (35) and the first conductive piece (20) form conductive contact, the tail end part of the second heating wire (33) wound on the outer side of the second core rod (15) is inserted into a second conductive inserting cavity (19) of the second core rod (15) through a second avoidance lower notch (31) and forms a fourth inner tube heating wire (36), and the fourth inner tube heating wire (36) and the second conductive piece (21) form conductive contact.
10. The industrial electric heating tube of claim 9, wherein one end of the tube body (1) is a sealing end, the other end of the tube body (1) is provided with a sealing element (25), the sealing element (25) is provided with a perforation corresponding to each temperature sensing wire and the conducting element, and a second insulating sleeve is arranged on each of the positive temperature sensing wire (7) and the negative temperature sensing wire (8) penetrating through the tail end of the second core rod (15);
The inner cavity of the pipe body (1) is provided with magnesia powder, the magnesia powder fills a gap between the core rod and the inner cavity of the pipe body (1), the core rod and the temperature sensing assembly (3) positioned on the core rod are packaged in the inner cavity of the pipe body (1) through the sealing piece (25), and a sealing structure for blocking the magnesia powder from leaking out of the inner cavity of the pipe body (1) is formed between the insulating sleeve and the corresponding perforation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510009236.XA CN119403002B (en) | 2025-01-03 | 2025-01-03 | Industrial electric heating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202510009236.XA CN119403002B (en) | 2025-01-03 | 2025-01-03 | Industrial electric heating tube |
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| CN119403002A true CN119403002A (en) | 2025-02-07 |
| CN119403002B CN119403002B (en) | 2025-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202510009236.XA Active CN119403002B (en) | 2025-01-03 | 2025-01-03 | Industrial electric heating tube |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535224A (en) * | 2015-01-26 | 2015-04-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Heating body for high-temperature thermocouple verification furnace |
| CN108842411A (en) * | 2018-08-02 | 2018-11-20 | 台州市黄岩喜运来电器有限公司 | Screw type high pressure steam generator |
| WO2023077853A1 (en) * | 2021-11-03 | 2023-05-11 | 深圳市吉迩科技有限公司 | Heating assembly and aerosol generating device |
| CN221284706U (en) * | 2023-11-22 | 2024-07-09 | 深圳市合元科技有限公司 | Heating assembly and aerosol generating device |
-
2025
- 2025-01-03 CN CN202510009236.XA patent/CN119403002B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104535224A (en) * | 2015-01-26 | 2015-04-22 | 中国航空工业集团公司北京长城计量测试技术研究所 | Heating body for high-temperature thermocouple verification furnace |
| CN108842411A (en) * | 2018-08-02 | 2018-11-20 | 台州市黄岩喜运来电器有限公司 | Screw type high pressure steam generator |
| WO2023077853A1 (en) * | 2021-11-03 | 2023-05-11 | 深圳市吉迩科技有限公司 | Heating assembly and aerosol generating device |
| CN221284706U (en) * | 2023-11-22 | 2024-07-09 | 深圳市合元科技有限公司 | Heating assembly and aerosol generating device |
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| Publication number | Publication date |
|---|---|
| CN119403002B (en) | 2025-08-19 |
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