Anti-coking heat exchange probe

Abstract

The invention discloses an anti-coking heat exchange probe, and relates to the technical field of probes, the anti-coking heat exchange probe comprises a base, a heat exchange probe, a cleaning assembly and a driving assembly, the heat exchange probe is provided with a thermocouple wire used for measuring temperature, and the heat exchange probe is U-shaped and comprises a first probe section, a second probe section and a third probe section which are connected in sequence; the first probe section and the third probe section are arranged in parallel and connected with the base, the cleaning assembly comprises a first cleaning ring and a second cleaning ring, the first cleaning ring slidably sleeves the first probe section, the second cleaning ring slidably sleeves the third probe section, and the driving assembly is used for driving the first cleaning ring to move to clean ash on the surface of the first probe section. The second cleaning ring is driven to move to clean ash on the surface of the third probe section. According to the anti-coking heat exchange probe, ash attached to the surface of the probe is cleaned, coking is avoided, the probe can be continuously used, and the measurement accuracy and the measurement efficiency of the probe are improved.

Description

Technical Field

[0001] This invention relates to the field of probe technology, and more specifically, to an anti-coking heat transfer probe. Background Technology

[0002] In the operation of coal-fired industrial boilers, when molten ash particles leave the flame heating surface and encounter the water-cooled wall, they adhere to the heated surfaces of the tube wall or furnace wall through cooling. This phenomenon is called coking. Coking of the water-cooled walls in the furnace of coal-fired boilers is one of the important problems affecting the boiler combustion process. It deteriorates the boiler's combustion state, reduces boiler efficiency, disrupts the normal operation of the working fluid, and causes damage accidents to equipment such as boiler water-cooled walls and superheaters. In severe cases, it can even lead to boiler shutdown due to the accumulation of coke in the furnace that cannot be discharged.

[0003] In related technologies, a probe is installed inside the boiler, with multiple temperature measuring points inside. When molten ash particles coke on the probe surface, the coke affects the accuracy of temperature measurement at the measuring points, causing differences in the temperatures measured at multiple points. This enables the detection of coking inside the boiler, allowing operators to intervene in the early stages of coking by adjusting material fluidization speed, optimizing air volume and air pressure, etc., thereby preventing the coking phenomenon from worsening and reducing boiler efficiency.

[0004] However, during use, there are problems such as the influence of ash or coking on the probe surface affecting the accuracy of temperature measurement, coking causing measurement failure, and the high frequency of removing, cleaning and reinstalling the probe, resulting in low measurement efficiency. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] To address this, this invention proposes an anti-coking heat transfer probe. This probe prevents coking by cleaning the ash and slag adhering to its surface, allowing for continuous use and improving the probe's measurement accuracy and efficiency.

[0007] The anti-coking heat transfer probe of this invention includes: Base; A heat exchange probe is provided with a thermocouple wire for measuring temperature. The heat exchange probe is U-shaped and includes a first probe segment, a second probe segment and a third probe segment connected in sequence. The first probe segment and the third probe segment are arranged in parallel and are respectively connected to the base. The second probe segment is an arc-shaped segment. A cleaning assembly, comprising a first cleaning ring and a second cleaning ring, wherein the first cleaning ring is slidably sleeved on the first probe segment and the second cleaning ring is slidably sleeved on the third probe segment; A driving assembly is disposed on the base. The driving assembly is used to drive the first cleaning ring to move along the extension direction of the first probe segment to clean the ash and slag on the surface of the first probe segment, and to drive the second cleaning ring to move along the extension direction of the third probe segment to clean the ash and slag on the surface of the third probe segment.

[0008] The anti-coking heat exchange probe of this invention uses a driving component to drive the first and second cleaning rings to clean the ash and slag adhering to the surfaces of the first and second probe sections. This can prevent coking on the heat exchange probe from affecting the temperature measurement accuracy of the thermocouple wire, and eliminates the step of removing the probe for cleaning and reinstallation, thereby improving the continuous usability, measurement accuracy and measurement efficiency of the heat exchange probe.

[0009] In some embodiments, the cleaning assembly further includes a third cleaning ring and a first elastic member. The third cleaning ring is sleeved on the first probe segment and located on the side of the first cleaning ring opposite to the base. The first elastic member is disposed between the first cleaning ring and the third cleaning ring. The third cleaning ring is used to move along the first probe segment and the second probe segment and clean the ash and slag on the surface of the first probe segment and the second probe segment under the action of the first elastic member and the first cleaning ring.

[0010] In some embodiments, the cleaning assembly further includes a fourth cleaning ring and a second elastic member. The fourth cleaning ring is sleeved on the third probe segment and located on the side of the second cleaning ring opposite to the base. The second elastic member is disposed between the second cleaning ring and the fourth cleaning ring. The fourth cleaning ring is used to move along the third probe segment and the second probe segment and clean the ash and slag on the surface of the third probe segment and the second probe segment under the action of the second elastic member and the second cleaning ring.

[0011] In some embodiments, the first elastic element is a support spring and is sleeved on the first probe segment; and / or, the second elastic element is a support spring and is sleeved on the third probe segment.

[0012] In some embodiments, the drive assembly includes a drive plate connected to the first cleaning ring and the second cleaning ring, the drive plate being position adjustable in a direction perpendicular to the base to drive the first cleaning ring and the second cleaning ring to move simultaneously away from or towards the base.

[0013] In some embodiments, the drive assembly includes a drive motor and a drive screw, the drive screw being rotatably disposed on the base and extending in a direction perpendicular to the base, the drive plate being threadedly fitted to the drive screw, and the drive motor being disposed on the base and drivingly connected to the drive screw.

[0014] In some embodiments, an anti-detachment plate is provided at one end of the drive screw away from the base, the anti-detachment plate being used to stop and engage with the drive plate in the axial direction of the drive screw.

[0015] In some embodiments, at least one of the two sides of the drive screw located on the base is provided with a sealed bearing.

[0016] In some embodiments, the device further includes an electrically connected temperature measuring instrument and a controller. The thermocouple wires are provided on the heat exchange probe and form multiple temperature measuring points along the heat exchange probe. The temperature measuring instrument is connected to the multiple thermocouple wires. The temperature measuring instrument is used to read the corresponding voltage signal and convert the voltage signal into the corresponding temperature value and send it to the controller. The controller is electrically connected to the drive motor and is used to control the operation of the drive motor when there is a difference between any two of the multiple temperature values.

[0017] In some embodiments, the heat exchange probe includes a tube body having a liquid infusion channel and a heat exchange liquid for heating the tube body is conveyed in the liquid infusion channel. The end of the first probe segment away from the second probe segment extends out of the base and is provided with a liquid inlet. A first temperature measuring meter for measuring the liquid is provided on the portion of the first probe segment extending out of the base. The end of the third probe segment away from the second probe segment extends out of the base and is provided with a liquid outlet. A second temperature measuring meter for measuring the liquid is provided on the portion of the third probe segment extending out of the base.

[0018] In some embodiments, a connecting flange is further included, which is disposed on the base and has a plurality of flange connection holes.

[0019] In some embodiments, the surface of the heat exchange probe is provided with a wear-resistant coating. Attached Figure Description

[0020] Figure 1 This is a schematic diagram from a first-view perspective of the anti-coking heat exchange probe according to an embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram from a second perspective of the anti-coking heat transfer probe according to an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the drive plate in the anti-coking heat exchange probe of an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the heat exchange probe in the anti-coking heat exchange probe of this invention.

[0024] Figure label: Base 1; Heat exchange probe 2; thermocouple wire 21; first probe section 22; second probe section 23; third probe section 24; tube body 25; wear-resistant coating 26; Cleaning component 3; first cleaning ring 31; second cleaning ring 32; third cleaning ring 33; first elastic element 34; fourth cleaning ring 35; second elastic element 36; Drive assembly 4; drive board 41; drive motor 42; drive screw 43; anti-detachment plate 44; sealed bearing 45; Temperature measuring instrument 5; Controller 6; Connecting flange 7; Flange connecting hole 71; First temperature measuring instrument 8; Second temperature measuring instrument 9. Detailed Implementation

[0025] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0026] like Figures 1 to 4 As shown, the anti-coking heat exchange probe of this embodiment includes a base 1, a heat exchange probe 2, a cleaning component 3, and a driving component 4. The heat exchange probe 2 is provided with a thermocouple wire 21 for measuring temperature. The heat exchange probe 2 is U-shaped and includes a first probe segment 22, a second probe segment 23, and a third probe segment 24 connected in sequence. The first probe segment 22 and the third probe segment 24 are arranged in parallel and are respectively connected to the base 1. The second probe segment 23 is an arc-shaped segment. The cleaning component 3 includes a first cleaning ring 31 and a second cleaning ring 32. The first cleaning ring 31 is slidably sleeved on the first probe segment 22, and the second cleaning ring 32 is slidably sleeved on the third probe segment 24. The driving component 4 is disposed on the base 1. The driving component 4 is used to drive the first cleaning ring 31 to move along the extension direction of the first probe segment 22 to clean the ash and slag on the surface of the first probe segment 22, and to drive the second cleaning ring 32 to move along the extension direction of the third probe segment 24 to clean the ash and slag on the surface of the third probe segment 24.

[0027] In this embodiment of the invention, the anti-coking heat exchange probe 2 is installed inside the furnace cavity and heated. The temperature inside the furnace is measured by thermocouple wire 21. Particles inside the furnace adhere to the surface of the heat exchange probe 2, affecting the heating of the heat exchange probe 2. When multiple thermocouple wires 21 inside the heat exchange probe 2 show different values, coking occurs inside the furnace cavity, prompting the operator to intervene manually to reduce the amount of particles inside the furnace and prevent the coking phenomenon from worsening. At this time, the drive assembly 4 drives the first cleaning ring 31 to move along the first probe section 22 to clean the ash and slag on the surface of the first probe section 22, and drives the second cleaning ring 32 to move along the third probe section 24 to clean the ash and slag on the surface of the third probe section 24, so that the heat exchange probe 2 can remeasure the temperature inside the furnace and monitor the coking inside the furnace.

[0028] The anti-coking heat exchange probe of this embodiment uses the driving component 4 to drive the first cleaning ring 31 and the second cleaning ring 32 to clean the ash and slag attached to the surface of the first probe section 22 and the second probe section 23. This can prevent coking on the heat exchange probe 2 from affecting the temperature measurement accuracy of the thermocouple wire 21, and eliminate the step of removing the probe for cleaning and reinstalling it, thereby improving the continuous usability, measurement accuracy and measurement efficiency of the heat exchange probe 2.

[0029] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the cleaning component 3 also includes a third cleaning ring 33 and a first elastic member 34. The third cleaning ring 33 is sleeved on the first probe segment 22 and located on the side of the first cleaning ring 31 away from the base 1. The first elastic member 34 is disposed between the first cleaning ring 31 and the third cleaning ring 33. The third cleaning ring 33 is used to move along the first probe segment 22 and the second probe segment 23 and clean the ash and slag on the surface of the first probe segment 22 and the second probe segment 23 under the action of the first elastic member 34 and the first cleaning ring 31.

[0030] This embodiment includes a third cleaning ring 33 and a first elastic element 34. When the first cleaning ring 31 moves, the first elastic element 34 pushes the third cleaning ring 33 to move. When the first cleaning ring 31 moves to a position close to the second probe segment 23, the third cleaning ring 33 can move to the position where the first probe segment 22 and the second probe segment 23 are connected. The first cleaning ring 31 continues to move, thereby pushing the third cleaning ring 33 to move in the second probe segment 23 until the third cleaning ring 33 moves to the position where the second probe segment 23 and the third probe segment 24 are connected. The third cleaning ring 33 achieves overall cleaning of the second probe segment 23. The cleaning is reliable and efficient, further improving the continuous usability, measurement accuracy, and measurement efficiency of the heat exchange probe 2.

[0031] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the cleaning assembly 3 also includes a fourth cleaning ring 35 and a second elastic member 36. The fourth cleaning ring 35 is sleeved on the third probe segment 24 and located on the side of the second cleaning ring 32 away from the base 1. The second elastic member 36 is disposed between the second cleaning ring 32 and the fourth cleaning ring 35. The fourth cleaning ring 35 is used to move along the third probe segment 24 and the second probe segment 23 and clean the ash and slag on the surface of the third probe segment 24 and the second probe segment 23 by the action of the second elastic member 36 and the second cleaning ring 32.

[0032] This embodiment includes a fourth cleaning ring 35 and a second elastic member 36. When the second cleaning ring 32 moves, the second elastic member 36 pushes the fourth cleaning ring 35 to move. When the second cleaning ring 32 moves to a position close to the second probe segment 23, the fourth cleaning ring 35 can move to the position where the third probe segment 24 connects to the second probe segment 23. The second cleaning ring 32 continues to move, thereby pushing the fourth cleaning ring 35 to move in the second probe segment 23 until the fourth cleaning ring 35 moves to the position where the second probe segment 23 connects to the first probe segment 22. The fourth cleaning ring 35 achieves overall cleaning of the second probe segment 23, which is reliable and efficient, further improving the continuous usability, measurement accuracy, and measurement efficiency of the heat exchange probe 2.

[0033] Preferably, such as Figure 1 , Figure 3 and Figure 4 As shown, the cleaning assembly 3 includes a third cleaning ring 33, a first elastic element 34, a fourth cleaning ring 35, and a second elastic element 36. When the first cleaning ring 31 and the second cleaning ring 32 move, the third cleaning ring 33 can be moved by the first elastic element 34 pushing it. When the first cleaning ring 31 moves to a position close to the second probe segment 23, the third cleaning ring 33 can move to the position where the first probe segment 22 and the second probe segment 23 are connected. The fourth cleaning ring 35 can then be moved by the second elastic element 36. When the second cleaning ring 32 moves to a position close to the second probe segment 23... The fourth cleaning ring 35 can be moved to the position where the third probe segment 24 and the second probe segment 23 are connected. The first cleaning ring 31 and the second cleaning ring 32 continue to move, thereby pushing the third cleaning ring 33 to move closer to the third probe segment 24 in the second probe segment 23, and pushing the fourth cleaning ring 35 to move closer to the first probe segment 22 in the second probe segment 23, until the third cleaning ring 33 and the fourth cleaning ring 35 come into contact to achieve overall cleaning of the second probe segment 23. The cleaning is reliable and efficient, further improving the continuous usability, measurement accuracy and measurement efficiency of the heat exchange probe 2.

[0034] In some embodiments, such as Figure 1 , Figure 3 and Figure 4As shown, the first elastic element 34 is a top support spring and is sleeved on the first probe section 22. By sleeved on the first probe section 22, the top support spring can drive the third cleaning ring 33 to move along the arc-shaped second probe section 23, thereby improving the cleaning reliability of the third cleaning ring 33.

[0035] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the second elastic element 36 is a top support spring and is sleeved on the third probe section 24. By sleeved on the third probe section 24, the top support spring can drive the fourth cleaning ring 35 to move along the arc-shaped second probe section 23, thereby improving the cleaning reliability of the fourth cleaning ring 35.

[0036] In some embodiments, such as Figure 1 , Figure 3 and Figure 4 As shown, the drive assembly 4 includes a drive plate 41, which is connected to the first cleaning ring 31 and the second cleaning ring 32. The position of the drive plate 41 is adjustable in a direction perpendicular to the base 1 to drive the first cleaning ring 31 and the second cleaning ring 32 to move simultaneously away from or towards the base 1.

[0037] This embodiment simplifies the structure by setting the drive board 41 to simultaneously drive the first cleaning ring 31 and the second cleaning ring 32, and improves the linkage between the first cleaning ring 31 and the second cleaning ring 32 in the cleaning operation. The cleaning is convenient and reliable, and further improves the continuous usability, measurement accuracy and measurement efficiency of the heat exchange probe 2.

[0038] Specifically, the drive plate 41 is arranged parallel to the base 1, and the two ends of the drive plate 41 are fixedly connected to the first cleaning ring 31 and the second cleaning ring 32, respectively.

[0039] Preferably, the thickness of the drive plate 41 is the same as the thickness of the first cleaning ring 31 and the second cleaning ring 32, so as to align the drive plate 41, the first cleaning ring 31 and the second cleaning ring 32, reduce the impact of the thickness of the drive plate 41 on the cleaning of the first cleaning ring 31 and the second cleaning ring 32, and further improve the cleaning efficiency of the first cleaning ring 31 and the second cleaning ring 32.

[0040] In some embodiments, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the drive assembly 4 includes a drive motor 42 and a drive screw 43. The drive screw 43 is rotatably mounted on the base 1 and extends in a direction perpendicular to the base 1. The drive plate 41 is threadedly mounted on the drive screw 43. The drive motor 42 is mounted on the base 1 and is connected to the drive screw 43 in a transmission manner.

[0041] In this embodiment, the drive motor 42 drives the drive screw 43, which in turn drives the drive plate 41 to move. This makes the operation convenient and facilitates the simultaneous movement of the first cleaning ring 31 and the second cleaning ring 32. While meeting the requirements of the effective cleaning stroke of the first cleaning ring 31 and the second cleaning ring 32, the space volume of the drive assembly 4 is greatly reduced compared to the telescopic rod, making it easier to install and use.

[0042] Specifically, the drive motor 42 is fixed on the side of the base 1 away from the second probe section 23. The output end of the drive motor 42 is connected to the drive screw 43 through a coupling. The drive screw 43 rotates through the base 1. The extension direction of the drive screw 43 is perpendicular to the base 1 and parallel to the first probe end and the third probe section 24. The drive plate 41 is threadedly engaged with the drive screw 43. The drive motor 42 drives the drive screw 43 to rotate. Under the restriction of the first cleaning ring 31 on the first probe section 22 and the second cleaning ring 32 on the third probe section 24 on the drive plate 41, the drive plate 41 moves along the axis of the drive screw 43 in a direction away from or close to the base 1.

[0043] In some embodiments, such as Figure 1 , Figure 2 and Figure 3 As shown, an anti-detachment plate 44 is provided at the end of the drive screw 43 away from the base 1. The anti-detachment plate 44 is used to stop the drive plate 41 in the axial direction of the drive screw 43. By limiting the extreme position of the drive plate 41 on the drive screw 43 through the anti-detachment plate 44, the reliability of the drive plate 41 reciprocating along the axial direction of the drive screw 43 is improved, and the continuous usability, measurement accuracy and measurement efficiency of the heat exchange probe 2 are further improved.

[0044] In some embodiments, such as Figure 3 As shown, at least one of the two sides of the drive screw 43 located on the base 1 is provided with a sealed bearing 45. Through the sealed bearing 45, the sealing performance of the connection position between the drive screw 43 and the base 1 is improved while realizing the rotational connection between the drive screw 43 and the base 1.

[0045] Preferably, the drive screw 43 is provided with sealed bearings 45 on both sides of the base 1.

[0046] In other embodiments, the drive component 4 is a direct drive component. The movable end of the direct drive component is fixedly connected to the drive plate 41. It can be a hydraulic telescopic rod, an electric telescopic rod, or a pneumatic telescopic rod. Through telescopic operation, it drives the drive plate 41 to move, thereby driving the first cleaning ring 31 and the third cleaning ring 33 to move synchronously.

[0047] In some embodiments, such as Figure 2As shown, it also includes a temperature measuring instrument 5 and a controller 6 that are electrically connected. Thermocouple wires 21 are provided on the heat exchange probe 2 and multiple temperature measuring points are formed along the heat exchange probe 2. The temperature measuring instrument 5 is connected to multiple thermocouple wires 21. The temperature measuring instrument 5 is used to read the corresponding voltage signal and convert the voltage signal into the corresponding temperature value and send it to the controller 6. The controller 6 is electrically connected to the drive motor 42 and is used to control the drive motor 42 to operate when there is a difference between any two of the multiple temperature values.

[0048] This embodiment monitors the furnace temperature through multiple temperature measurement points on the heat exchange probe 2, increasing measurement accuracy and further improving the detection of particles attached to the surface of the heat exchange probe 2. Through the linkage control of the temperature measuring instrument 5, the controller 6 and the drive motor 42, the automatic cleaning of the heat exchange probe 2 is realized, further improving the continuous usability, measurement accuracy and measurement efficiency of the heat exchange probe 2.

[0049] Optionally, the temperature measuring instrument 5 is a thermometer or a data acquisition system, etc., used to read the voltage signal generated by the thermocouple wire 21 and convert the voltage signal into the corresponding temperature value according to a known calibration curve or formula.

[0050] Optionally, the drive screw 43 is equipped with a torque sensor for measuring torsional force. The torque sensor is electrically connected to the controller 6. The controller 6 is used to control the drive motor 42 to stop working when the value measured by the torque sensor reaches the warning value, so as to avoid damage to the threads on the drive screw 43 or drive plate 41 due to force, and to ensure the reliability of the device during use.

[0051] Optionally, the controller 6 is equipped with a timing unit and stores a set working time. When the controller 6 controls the drive motor 42 to work, the timing unit controls the drive motor 42 to rotate for the set working time so that the first cleaning ring 31, the second cleaning ring 32, the third cleaning ring 33 and the fourth cleaning ring 35 can clean the ash and slag that are avoided by the first probe section 22, the third probe section 24 and the second probe section 23.

[0052] In some embodiments, such as Figure 2 and Figure 4 As shown, the heat exchange probe 2 includes a tube body 25, which has a liquid delivery channel and a heat exchange liquid for heating the tube body 25 is delivered in the liquid delivery channel. The end of the first probe section 22 away from the second probe section 23 extends out of the base 1 and is provided with a liquid inlet. A first temperature measuring meter 8 for measuring the liquid is provided on the part of the first probe section 22 that extends out of the base 1. The end of the third probe section 24 away from the second probe section 23 extends out of the base 1 and is provided with a liquid outlet. A second temperature measuring meter 9 for measuring the liquid is provided on the part of the third probe section 24 that extends out of the base 1.

[0053] In this embodiment, the first temperature measuring instrument 8 and the second temperature measuring instrument 9 facilitate the monitoring of the inlet and outlet temperatures of the heat exchange liquid transported in the tube 25, thereby improving the precise control of the heat exchange liquid temperature. By heating the tube 25 with the heat exchange liquid, the temperature difference between the tube 25 and the furnace is reduced, thereby reducing the adhesion of particles and other substances in the furnace to the surface of the tube 25 caused by the temperature difference, and thus improving the accuracy of the heat exchange probe 2 measurement.

[0054] Specifically, the inlet is equipped with a delivery pipe, the end of which is equipped with a pump body placed in a storage tank, the end of which is equipped with a return pipe connected to the storage tank, and the delivery pipe or the storage tank is equipped with a heating unit to heat the heat exchange liquid to be entered into the pipe body 25.

[0055] Optionally, the heat exchange liquid is water.

[0056] In some embodiments, such as Figure 1 and Figure 2 As shown, it also includes a connecting flange 7, which is located on the base 1 and has multiple flange connection holes 71. The connecting flange 7 and the flange connection holes 71 facilitate the installation and disassembly of the furnace body, and make maintenance and replacement convenient.

[0057] In some embodiments, such as Figure 4 As shown, the surface of the heat exchange probe 2 is provided with a wear-resistant coating 26. The wear-resistant coating 26 can reduce the risk of the heat exchange probe 2 breaking due to continuous friction during the cleaning process of the cleaning ring.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A heat transfer probe for preventing coking, characterized in that, include: Base; A heat exchange probe is provided with a thermocouple wire for measuring temperature. The heat exchange probe is U-shaped and includes a first probe segment, a second probe segment and a third probe segment connected in sequence. The first probe segment and the third probe segment are arranged in parallel and are respectively connected to the base. The second probe segment is an arc-shaped segment. A cleaning assembly, comprising a first cleaning ring and a second cleaning ring, wherein the first cleaning ring is slidably sleeved on the first probe segment and the second cleaning ring is slidably sleeved on the third probe segment; A driving assembly is disposed on the base. The driving assembly is used to drive the first cleaning ring to move along the extension direction of the first probe segment to clean the ash and slag on the surface of the first probe segment, and to drive the second cleaning ring to move along the extension direction of the third probe segment to clean the ash and slag on the surface of the third probe segment.

2. The anti-coking heat transfer probe according to claim 1, characterized in that, The cleaning assembly further includes a third cleaning ring and a first elastic element. The third cleaning ring is sleeved on the first probe segment and located on the side of the first cleaning ring opposite to the base. The first elastic element is disposed between the first cleaning ring and the third cleaning ring. The third cleaning ring is used to move along the first probe segment and the second probe segment and clean the ash and slag on the surface of the first probe segment and the second probe segment under the action of the first elastic element and the first cleaning ring.

3. The anti-coking heat transfer probe according to claim 2, characterized in that, The cleaning assembly further includes a fourth cleaning ring and a second elastic member. The fourth cleaning ring is sleeved on the third probe segment and located on the side of the second cleaning ring opposite to the base. The second elastic member is disposed between the second cleaning ring and the fourth cleaning ring. The fourth cleaning ring is used to move along the third probe segment and the second probe segment and clean the ash and slag on the surface of the third probe segment and the second probe segment under the action of the second elastic member and the second cleaning ring.

4. The anti-coking heat transfer probe according to claim 3, characterized in that, The first elastic element is a support spring and is sleeved on the first probe segment; and / or, the second elastic element is a support spring and is sleeved on the third probe segment.

5. The anti-coking heat transfer probe according to any one of claims 1-4, characterized in that, The drive assembly includes a drive plate connected to the first cleaning ring and the second cleaning ring. The drive plate is position-adjustable in a direction perpendicular to the base to drive the first cleaning ring and the second cleaning ring to move simultaneously away from or towards the base.

6. The anti-coking heat transfer probe according to claim 5, characterized in that, The drive assembly includes a drive motor and a drive screw. The drive screw is rotatably mounted on the base and extends in a direction perpendicular to the base. The drive plate is threadedly fitted to the drive screw. The drive motor is mounted on the base and is drively connected to the drive screw.

7. The anti-coking heat transfer probe according to claim 6, characterized in that, An anti-detachment plate is provided at the end of the drive screw away from the base, the anti-detachment plate being used to stop the drive screw in the axial direction; and / or, The drive screw has a sealed bearing on at least one of its two sides on the base.

8. The anti-coking heat transfer probe according to claim 6, characterized in that, It also includes an electrically connected temperature measuring instrument and a controller. The thermocouple wires are provided on the heat exchange probe and form multiple temperature measuring points along the heat exchange probe. The temperature measuring instrument is connected to the multiple thermocouple wires. The temperature measuring instrument is used to read the corresponding voltage signal and convert the voltage signal into the corresponding temperature value and send it to the controller. The controller is electrically connected to the drive motor and is used to control the operation of the drive motor when there is a difference between any two of the multiple temperature values.

9. The anti-coking heat transfer probe according to any one of claims 1-4, characterized in that, The heat exchange probe includes a tube body with a liquid delivery channel containing a heat exchange liquid for heating the tube body. The end of the first probe segment away from the second probe segment extends out of the base and has a liquid inlet. A first temperature measuring meter for measuring the liquid is provided on the portion of the first probe segment extending out of the base. The end of the third probe segment away from the second probe segment extends out of the base and has a liquid outlet. A second temperature measuring meter for measuring the liquid is provided on the portion of the third probe segment extending out of the base.

10. The anti-coking heat transfer probe according to any one of claims 1-4, characterized in that, It also includes a connecting flange, which is disposed on the base and has a plurality of flange connection holes; and / or, The heat exchange probe has a wear-resistant coating on its surface.

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