Insulation state detection device and method for tube heater

Abstract

The application discloses an insulation detection device and method of a tubular heater. The device comprises a containing cavity for containing the tubular heater; wherein the tubular heater comprises a heating wire, an insulation coating arranged around the heating wire, and a protective coating arranged around the insulation coating; an adjusting module for adjusting environmental parameters in the containing cavity; a detection module for obtaining a first electric signal through a first detection joint and a second electric signal through a second detection joint during changes of the environmental parameters, and detecting an insulation state of the insulation coating between the heating wire and the protective coating based on the first electric signal and the second electric signal; wherein the first detection joint is connected to the heating wire; and the second detection joint is connected to the protective coating.

Description

Technical Field

[0001] This application relates to the field of testing technology, and in particular to a device and method for testing the insulation status of a tubular heater. Background Technology

[0002] The reboiler in a cryogenic distillation column requires heating elements, such as tubular heaters, to achieve its heating function. In practical applications, due to variations in the sealing processes at the interface of the tubular heater, its insulation performance may not meet the heating requirements of the reboiler. Therefore, accurately determining the insulation performance of the tubular heater is crucial. Summary of the Invention

[0003] Based on the above problems, this application provides an insulation status detection device and method for a tubular heater.

[0004] The technical solution provided in this application is as follows:

[0005] This application provides an insulation condition detection device for a tubular heater, the device comprising:

[0006] A receiving cavity for accommodating the tubular heater; wherein the tubular heater includes a heating wire, an insulating coating wound around the heating wire, and a protective coating wound around the insulating coating;

[0007] An adjustment module is used to adjust the environmental parameters within the accommodating cavity;

[0008] The detection module is used to acquire a first electrical signal through a first detection connector and a second electrical signal through a second detection connector during the change of the environmental parameters, and to detect the insulation state of the insulating coating between the heating wire and the protective coating based on the first electrical signal and the second electrical signal; wherein the first detection connector is connected to the heating wire; and the second detection connector is connected to the protective coating.

[0009] In some embodiments, the adjustment module is disposed outside the cavity of the accommodating cavity and is sealed to a first through hole opened on the cavity of the accommodating cavity for adjusting the air pressure state inside the accommodating cavity;

[0010] The detection module is used to detect the insulation state of the insulating coating based on the first electrical signal and the second electrical signal during the change of air pressure.

[0011] In some embodiments, the detection module is disposed outside the cavity of the receiving cavity; the detection module is sealed to a second through hole opened on the cavity of the receiving cavity via an electrical connection unit.

[0012] In some embodiments, the detection module is further configured to detect changes in the environmental parameters.

[0013] In some embodiments, the device further includes an association module for associating the environmental parameters with the insulation state to obtain associated data.

[0014] In some embodiments, the apparatus further includes a determining module for determining, based on the associated data, a first air pressure range in which the insulation degree of the insulating coating is greater than or equal to a first threshold.

[0015] In some embodiments, the device further includes an output module for outputting the first pressure range to control the heating operation of the tubular heater based on the first pressure range.

[0016] In some embodiments, the determining module is further configured to determine, based on the associated data, a second pressure range in which the safety level of the tubular heater is less than a second threshold.

[0017] In some embodiments, the device further includes an output module for outputting a prompt message including the second pressure range.

[0018] In some embodiments, the tubular heater is insulated from the inner wall of the accommodating cavity.

[0019] This application embodiment also provides a method for detecting the insulation status of a tubular heater, the tubular heater comprising a heating wire, an insulating coating wound around the heating wire, and a protective coating wound around the insulating coating; the tubular heater is disposed within a receiving cavity; the method includes:

[0020] Adjust the environmental parameters within the accommodating cavity;

[0021] During the change of the environmental parameters, a first electrical signal is acquired through a first detection connector, and a second electrical signal is acquired through a second detection connector; wherein, the first detection connector is connected to the heating wire; and the second detection connector is connected to the protective coating.

[0022] The insulation state of the insulating coating between the heating wire and the protective coating is detected based on the first electrical signal and the second electrical signal.

[0023] In the insulation state detection device for a tubular heater provided in this application embodiment, the tubular heater is housed within a accommodating cavity. This allows for improved accuracy and specificity in adjusting environmental parameters within the accommodating cavity via an adjustment module. Furthermore, the detection module can acquire a first electrical signal and a second electrical signal in real time during environmental parameter changes, indirectly linking the changes in these signals to the environmental parameter changes. Simultaneously, the insulation state of the insulating coating determined by the detection module based on the first and second electrical signals comprehensively and accurately characterizes the changes in the insulation performance of the insulating coating during environmental parameter variations. Therefore, the insulation state detection device for a tubular heater provided in this application embodiment can achieve comprehensive and accurate detection of the insulation state of the insulating coating in the tubular heater. Attached Figure Description

[0024] Figure 1 A schematic diagram of the insulation status detection device for a tubular heater provided in an embodiment of this application;

[0025] Figure 2 Another structural schematic diagram of the insulation status detection device for a tubular heater provided in an embodiment of this application;

[0026] Figure 3 Another schematic diagram of the insulation detection device for the tubular heater provided in the embodiments of this application;

[0027] Figure 4 This is a schematic flowchart of the insulation testing method for a tubular heater provided in an embodiment of this application. Detailed Implementation

[0028] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0029] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0030] The reboiler in a cryogenic distillation column requires a heating element to function. In practical applications, the heating elements installed in the reboiler include tubular heaters or thin-film heaters, where tubular heaters may include heating tubes.

[0031] In practical applications, to achieve high-power heating in a reboiler, a tubular heater is required. However, due to variations in the manufacturing processes of tubular heaters, such as heating tubes, the sealing at the tube interfaces may be poor, meaning the insulation performance of the heating tubes may not meet the actual heating requirements of the reboiler. Therefore, determining the insulation performance of the heating tubes before reboiler installation is crucial for safe heating.

[0032] However, the relevant technologies do not provide a technical solution for determining the insulation performance of the heating element.

[0033] Based on the above problems, this application provides an insulation status detection device and method for a tubular heater.

[0034] Figure 1 This is a schematic diagram of the insulation status detection device for a tubular heater provided in an embodiment of this application, as shown below. Figure 1 As shown, the device may include a receiving cavity 101, an adjustment module 102, and a detection module 103; wherein:

[0035] The accommodating cavity 101 is used to accommodate a tubular heater; wherein the tubular heater includes a heating wire, an insulating coating wound around the heating wire, and a protective coating wound around the insulating coating.

[0036] Adjustment module 102 is used to adjust the environmental parameters within the accommodating cavity 101;

[0037] The detection module 103 is used to acquire a first electrical signal through a first detection connector and a second electrical signal through a second detection connector during the process of environmental parameter changes, and to detect the insulation state of the insulating coating between the heating wire and the protective coating based on the first electrical signal and the second electrical signal; wherein, the first detection connector is connected to the heating wire and the second detection connector is connected to the protective coating.

[0038] In one embodiment, the tubular heater can be a heating tube.

[0039] In one embodiment, the heating wire can be hollow or solid.

[0040] In one embodiment, the cross-section of the heating wire can be a geometric shape with a specified size, such as a circle or a rectangle. Exemplarily, the side length, diameter, or perimeter of the cross-section of the heating wire can be associated with a specified size. Exemplarily, the specified size can correspond to the actual heating requirements, but this application embodiment does not limit this.

[0041] In one embodiment, the heating wire can be made of a conductor material, such as nickel wire.

[0042] In one embodiment, the insulating coating can be uniformly and seamlessly wound around the heating wire with a certain thickness, that is, the inner diameter of the insulating coating can be the same as the outer diameter of the heating wire; for example, the thickness of the insulating coating can be determined according to the actual heating and heat dissipation requirements.

[0043] In one embodiment, the insulating coating may be made of an insulating material, for example, the insulating coating may be magnesium oxide.

[0044] In one embodiment, the protective coating can be seamlessly wrapped around the insulating coating with a certain thickness, that is, the inner diameter of the protective coating can be the same as the outer diameter of the insulating coating; for example, the thickness of the protective coating can be determined according to the actual temperature maintenance and heat dissipation requirements.

[0045] In one embodiment, the protective coating may be made of a conductive material, for example, the protective coating may be made of stainless steel.

[0046] In one embodiment, the accommodating cavity 101 may include a closed or open physical space.

[0047] In one embodiment, the environmental parameters may include at least one of the following: temperature, humidity, light intensity, and gravitational acceleration within the cavity.

[0048] In one embodiment, the adjustment module 102 can adjust at least one environmental parameter within the accommodating cavity by heating, humidifying, projecting light, or rapidly moving the accommodating cavity.

[0049] In one embodiment, the adjustment module 102 may include a device or apparatus capable of performing the above-mentioned adjustment function, such as a humidifier.

[0050] In one implementation, under the adjustment action of the adjustment module, at least one of the environmental parameters can change from a first parameter to a second parameter within a specified time. For example, the specified time can be a unit of time, such as one minute. For example, the change state between the first parameter and the second parameter within the specified time can be linear or nonlinear.

[0051] In one embodiment, the first detection connector can be an electrical connection component that connects the first connecting line to the heating wire portion, and correspondingly, the second detection connector can be an electrical connection component that connects the second connecting line to the protective coating; for example, the first connecting line and the second connecting line can also be connected to the detection module respectively to realize the transmission of the first electrical signal and the second electrical signal between the tubular heater and the detection module.

[0052] In one embodiment, the insulation state can indicate whether the insulating coating has the electrical property of not conducting electric charge; for example, the insulation state can also indicate the degree of conductivity of the insulating coating after it switches to the conductive state.

[0053] In one embodiment, the amplitudes of the first electrical signal and the second electrical signal can be greater than or equal to 0. For example, when the amplitudes of the first electrical signal and the second electrical signal are 0, it can indicate that no charge transfer has occurred between the heating wire and the protective coating, that is, the insulating coating is still in an insulating state. When the amplitudes of the first electrical signal and the second electrical signal are not 0, it can indicate that charge transfer has occurred in the insulating coating between the heating wire and the protective coating, that is, the insulating coating is in a conductive state.

[0054] In one embodiment, the detection module 103 may include an energy detection device having at least two detection terminals, such as an ammeter or a megohmmeter; for example, in order to capture a first electrical signal and a second electrical signal with an amplitude less than an amplitude threshold, the accuracy of the ammeter or megohmmeter may be greater than or equal to an accuracy threshold; for example, the magnitude of the amplitude threshold and the accuracy threshold may be determined or adjusted according to actual detection requirements, and this application embodiment does not limit this.

[0055] As can be seen from the above, in the insulation state detection device for a tubular heater provided in this application embodiment, the tubular heater is housed within the accommodating cavity. This allows for improved accuracy and specificity in adjusting environmental parameters within the accommodating cavity via the adjustment module. Furthermore, the detection module can acquire the first and second electrical signals in real time during environmental parameter changes, thereby indirectly linking the changes in the first and second electrical signals to the environmental parameter changes. Simultaneously, the insulation state of the insulating coating determined by the detection module based on the first and second electrical signals can comprehensively and accurately characterize the changes in the insulation performance of the insulating coating during environmental parameter changes. Therefore, the insulation state detection device for a tubular heater provided in this application embodiment can achieve comprehensive and accurate detection of the insulation state of the insulating coating in the tubular heater.

[0056] Based on the foregoing embodiments, in the insulation state detection device 100 provided in this application embodiment, the adjustment module 102 is disposed outside the cavity of the accommodating cavity 101 and is sealed to the first through hole opened on the cavity of the accommodating cavity 101 for adjusting the air pressure state inside the accommodating cavity.

[0057] The detection module 103 is used to detect the insulation state of the insulating coating based on a first electrical signal and a second electrical signal during the process of air pressure change.

[0058] In one embodiment, the number of through holes in the first through hole can be at least one, and the first through hole can be sealed to the third connecting line, thereby reducing the negative impact of the external environment and the adjustment module 102 on the internal environment of the accommodating cavity 101. The third connecting line includes a connecting line for connecting the adjustment module 102 and the first through hole.

[0059] In one embodiment, the adjustment module 102 may include a vacuum unit, and the vacuum unit can be used to adjust the air pressure inside the accommodating cavity 101. For example, by adjusting the power of the vacuum unit, the accommodating cavity 101 can be adjusted to a vacuum state within a specified time.

[0060] In one embodiment, the detection module 103 can continuously receive and / or acquire a first electrical signal and a second electrical signal during the change of air pressure inside the accommodating cavity 101, and determine the insulation state of the insulating coating based on the amplitude of the first electrical signal and the second electrical signal.

[0061] As can be seen from the above, the adjustment module in the insulation detection device for the tubular heater provided in this application embodiment is located outside the cavity of the accommodating cavity and is sealed to the first through hole opened on the cavity of the accommodating cavity. This can reduce the negative impact of the adjustment module on the environmental state inside the accommodating cavity due to factors such as heat generation during the adjustment of the environmental parameters of the accommodating cavity, and improve the accuracy of the air pressure adjustment inside the accommodating cavity. Furthermore, the detection module can detect the insulation state of the insulating coating based on the first electrical signal and the second electrical signal during the change of air pressure state, thereby realizing accurate and continuous tracking and detection of the insulation state of the tubular heater under the condition of changing air pressure state.

[0062] Based on the foregoing embodiments, in the insulation state detection device for the tubular heater provided in this application embodiment, the detection module 103 is disposed outside the cavity of the accommodating cavity 101; the detection module 103 is sealed to the second through hole opened on the cavity of the accommodating cavity 101 through an electrical connection unit.

[0063] In one embodiment, the second through hole can be seamlessly connected to the first connecting line and the second connecting line; for example, the number of through holes in the second through hole can be at least one.

[0064] In one embodiment, the electrical connection unit may include an electrical connector.

[0065] As can be seen from the above, in the insulation state detection device for the tubular heater provided in this application embodiment, the detection module is located outside the accommodating cavity and is sealed to the second through hole opened on the accommodating cavity through an electrical connection unit. In this way, not only can the heat generated by the detection module during the detection of the first and second electrical signals be reduced to the internal environment of the accommodating cavity, but also the energy loss during the transmission of the first and second electrical signals can be reduced through the electrical signal transmission function of the electrical connection unit, thereby improving the accuracy of the first and second electrical signals.

[0066] Based on the foregoing embodiments, in the insulation state detection device for the tubular heater provided in this application embodiment, the detection module 103 is also used to detect changes in environmental parameters.

[0067] In one implementation, the detection module 103 can detect the changes in environmental parameters in real time; for example, the detection module 103 can sample environmental parameters at specified time intervals to obtain the changes in environmental parameters.

[0068] In one embodiment, a communication connection can be established between the detection module 103 and the adjustment module 102. After detecting that the adjustment module 102 has performed an adjustment operation on the environmental parameters, the detection module 103 can start a detection operation on the environmental parameters.

[0069] As can be seen from the above, in the insulation state detection device for the tubular heater provided in this application embodiment, the detection module is also used to detect the change state of environmental parameters. In this way, by reusing the detection module, not only can the insulation state of the insulating coating be detected, but also the change state of environmental parameters in the accommodating cavity can be detected, thereby reducing the equipment cost of environmental parameter detection; and, it can also realize the dynamic tracking and recording of the change state of environmental parameters.

[0070] Figure 2 Another structural schematic diagram of the insulation condition detection device for a tubular heater provided in the embodiments of this application is shown below. Figure 2 As shown, the insulation status detection device for tubular heaters provided in this application embodiment further includes an association module 104, which is used to associate environmental parameters with insulation status to obtain associated data.

[0071] In one embodiment, the association module 104 can establish an electrical connection with the detection module 103. Through this electrical connection, the detection module 103 can transmit the insulation state and changes in environmental parameters it detects to the association module 104.

[0072] In one embodiment, after detecting the insulation state and environmental parameters, the detection module 103 can set time information for each data in the insulation state and environmental parameters, and send the insulation state and environmental parameters with the set time information to the association module 104.

[0073] In one embodiment, the association module 104 can perform time association on the insulation state and environmental parameters based on the time information carried in the insulation state and environmental parameters, thereby obtaining associated data.

[0074] In one implementation, the insulation state and environmental parameters in the associated data can be in a one-to-one correspondence, such as the first insulation state corresponding to the first environmental parameter; for example, the insulation state and environmental parameters in the associated data can be in a one-to-many correspondence, such as the second insulation state corresponding to the second environmental parameter and the third environmental parameter.

[0075] In one implementation, the associated data may include the state of insulation as a function of environmental parameters, such as the change in the insulation state of the insulating coating of a tubular heater as a function of air pressure.

[0076] As can be seen from the above, the correlation module included in the insulation state detection device for tubular heaters provided in this application embodiment can correlate environmental parameters with insulation state to obtain correlation data, thereby realizing the organic integration of dispersed environmental parameters and insulation state; and, through the correlation data, the insulation state change trend of the insulation coating of the tubular heater under at least two environmental parameters can be obtained, thereby enabling a more comprehensive and accurate reflection of the insulation state of the insulation coating of the tubular heater.

[0077] like Figure 2 As shown, the insulation state detection device for the tubular heater provided in this application embodiment further includes a determination module 105, which is used to determine a first gas pressure range in which the insulation degree of the insulating coating is greater than or equal to a first threshold based on associated data.

[0078] In one embodiment, an electrical connection can be established between the determining module 105 and the association module 104, thereby enabling the association module 104 to send association data to the determining module 105.

[0079] In one embodiment, the environmental parameters of the associated data may include the air pressure data inside the accommodating cavity 101. Therefore, the determination module 105 analyzes the insulation state, determines the insulation state data with an insulation degree greater than or equal to a first threshold, and determines the air pressure range corresponding to the above insulation state data as the first air pressure range.

[0080] In one embodiment, the first threshold may vary with changes in environmental parameters within the accommodating cavity 101, the process and / or material of the tubular heater, and this application embodiment does not limit this.

[0081] As can be seen from the above, the determination module in the insulation state detection device for tubular heaters provided in this application embodiment is used to determine the first gas pressure range in which the insulation degree of the insulating coating is greater than or equal to the first threshold based on the associated data. In this way, by processing the associated data by the determination module, the first gas pressure range in which the tubular heater can be safely heated can be accurately determined, thereby improving the safety of the heating process of the tubular heater.

[0082] like Figure 2 As shown, the insulation state detection device 100 for a tubular heater provided in this application embodiment further includes an output module 106 for outputting a first pressure range, so as to control the heating operation of the heater based on the first pressure range.

[0083] In one embodiment, the output module 106 may be electrically connected to the determining module 105, thereby enabling the determining module 105 to send the first pressure range to the output module.

[0084] In one embodiment, the output module 106 can output the first pressure range in the form of voice, text, pictures or animation, so that professional technicians can adjust or control the air pressure of the environment where the tubular heater is working to the first pressure range, thereby realizing safe heating of the reboiler by the tubular heater.

[0085] As can be seen from the above, the output module of the insulation state detection device for the tubular heater provided in this application embodiment can output the first pressure range, thereby realizing an intuitive, visual, and real-time output of the first pressure range, which can improve the safety of the tubular heater heating operation within the first pressure range.

[0086] Based on the foregoing embodiments, the determining module 105 in the insulation state detection device 100 for tubular heaters provided in this application embodiment is further used to determine, based on associated data, a second gas pressure range in which the safety level of the tubular heater is less than a second threshold.

[0087] In one embodiment, the safety level of the tubular heater below the second threshold may include a level where the insulation degree of the insulating coating is less than the second threshold, such as the critical level at which the insulating coatings of the tubular heater switch from an insulating state to a conductive state. Exemplarily, the value of the second threshold may vary depending on the materials and / or processes of the various components in the tubular heater, and this application embodiment does not limit this.

[0088] In one embodiment, the determining module 105 can analyze the insulation state values ​​in the associated data, lock the pressure range when the first electrical signal and the second electrical signal switch to non-zero, and then determine the pressure range as the second pressure range.

[0089] As can be seen from the above, the determination module in the insulation state detection device for tubular heaters provided in this application embodiment can also determine the second gas pressure range where the safety level of the tubular heater is less than the second threshold based on the associated data, thereby realizing the comprehensive determination of the gas pressure range for safe heating of the tubular heater.

[0090] Based on the foregoing embodiments, the insulation status detection device 100 for tubular heaters provided in this application embodiment further includes an output module 106 for outputting prompt information including a second pressure range.

[0091] In one embodiment, the prompt information output by the output module 106 may include the material and manufacturing process of the tubular heater, the insulation level of the second pressure range, and the second pressure range itself, thereby comprehensively and accurately reflecting the changes in the material, manufacturing process, and insulation status of the tubular heater in the second pressure range.

[0092] As can be seen from the above, the output module in the insulation state detection device for the tubular heater provided in this application embodiment can output the second air pressure range in real time, which includes the prompt information of the second air pressure range, indicating that the safety level of the tubular heater is less than the second threshold. This provides a basis for adjusting the ambient air pressure when the tubular heater is working, thereby improving the safety of the heating operation of the tubular heater.

[0093] Based on the foregoing embodiments, in the insulation state detection device for the tubular heater provided in this application embodiment, the tubular heater is insulated from the inner wall of the accommodating cavity 101.

[0094] In one embodiment, the inner wall of the accommodating cavity 101, such as the top arm away from the ground, may be provided with a device, such as a hook, capable of suspending a tubular heater; for example, the stability of the insulation performance of the hook capable of suspending the tubular heater is greater than or equal to a stability threshold, such as the hook being a super insulator.

[0095] As can be seen from the above, in the insulation state detection device for the tubular heater provided in this application embodiment, the tubular heater is insulated from the inner wall of the accommodating cavity, thereby reducing the influence of the inner wall of the accommodating cavity on the first electrical signal and the second electrical signal, improving the accuracy of the first electrical signal and the second electrical signal, and thus improving the accuracy of the insulation state of the insulating coating.

[0096] Figure 3This is another structural schematic diagram of the insulation detection device 100 for a tubular heater provided in the embodiments of this application, as shown below. Figure 3 As shown, the detection container 201 in the device 100 can be the accommodating cavity in the aforementioned embodiment, and the vacuum unit 202 can be the adjustment module 102 in the aforementioned embodiment, used to adjust the gas pressure in the detection container 201; the measuring instrument 203 and the vacuum gauge 204 can be the detection module 103 in the aforementioned embodiment, wherein the measuring instrument 203 can be sealed to the heating tube 206 contained in the detection container 201 through the electrical connector 205, and the heating tube 206 can be the tubular heater in the aforementioned embodiment; the vacuum gauge 204 and the measuring instrument 203 can be connected to the data calculation module 207; exemplarily, the data calculation module 207 can realize the functions of the association module, the determination module and the output module in the aforementioned embodiment.

[0097] For example, the inner wall of the detection container 201 is insulated from the heating tube 206; the first detection connector and the second detection connector of the electrical connector 205 can be sealed to the protective coating and the heating wire of the heating tube 206 respectively through the first through hole opened on the detection container 201; the measuring instrument 203 is connected to the electrical connector 205 to detect and receive the first electrical signal and the second electrical signal transmitted by the electrical connector 205 in real time, and send the first electrical signal and the second electrical signal to the data calculation module 207.

[0098] For example, the vacuum unit 202 can adjust the air pressure inside the detection container 201 under the control of the data calculation module 207, and the vacuum gauge 204 can detect the air pressure change in the detection container 201 to obtain the air pressure detection result and send the air pressure detection result to the data calculation module 207.

[0099] For example, the data calculation module 207 can correlate the first electrical signal, the second electrical signal, and the air pressure detection result it receives to obtain correlated data; for example, the data calculation module 207 can also determine the first air pressure range and the second air pressure range based on the correlated data; for example, the data calculation module 207 can also output the first voltage range and the second voltage range.

[0100] For example, the data calculation module 207 can implement the functions of the association module, determination module and output module as described in the foregoing embodiments, and the embodiments of this application do not limit this.

[0101] As can be seen from the above, the insulation state detection device for the tubular heater provided in this application embodiment can achieve accurate and comprehensive detection of the insulation state of the protective coating in the heating tube and the insulation coating between the heating wires, thereby ensuring the safe heating of the reboiler.

[0102] Based on the foregoing embodiments, this application also provides an insulation detection method for a tubular heater.

[0103] It should be noted that the insulation detection method for tubular heaters provided in this application embodiment can be implemented by a processor of an electronic device; the processor can be at least one of the following: Application Specific Integrated Circuit (ASIC), Digital Signal Processor (DSP), Digital Signal Processing Device (DSPD), Programmable Logic Device (PLD), Field Programmable Gate Array (FPGA), Central Processing Unit (CPU), controller, microcontroller, and microprocessor.

[0104] For example, the aforementioned electronic device may include a computer device.

[0105] Figure 4 This is a schematic flowchart of the insulation testing method for a tubular heater provided in an embodiment of this application. The tubular heater includes a heating wire, an insulating coating wound around the heating wire, and a protective coating wound around the insulating coating; the tubular heater is disposed within a receiving cavity; as shown... Figure 4 As shown, the process may include the following steps:

[0106] Step 401: Adjust the environmental parameters inside the accommodating cavity.

[0107] Step 402: During the change of environmental parameters, a first electrical signal is acquired through the first detection connector and a second electrical signal is acquired through the second detection connector.

[0108] The first detection connector is connected to the heating wire; the second detection connector is connected to the protective coating.

[0109] Step 403: Detect the insulation state of the insulating coating between the heating wire and the protective coating based on the first electrical signal and the second electrical signal.

[0110] In some embodiments, the insulation state detection method for a tubular heater provided in this application, which detects the insulation state of the insulating coating between the heating wire and the protective coating based on a first electrical signal and a second electrical signal, includes:

[0111] The air pressure inside the accommodating cavity is adjusted through the first through hole opened on the accommodating cavity body;

[0112] During the change of air pressure, the insulation state of the insulating coating is detected based on the first electrical signal and the second electrical signal.

[0113] In some embodiments, the insulation state detection method for a tubular heater provided in this application may further include the following steps:

[0114] Detect changes in environmental parameters.

[0115] In some embodiments, the insulation state detection method for a tubular heater provided in this application may further include the following steps:

[0116] By associating environmental parameters with insulation status, correlated data is obtained.

[0117] In some embodiments, the insulation state detection method for a tubular heater provided in this application may further include the following steps:

[0118] Based on the associated data, a first air pressure range is determined where the insulation degree of the insulating coating is greater than or equal to a first threshold.

[0119] In some embodiments, the insulation state detection method for a tubular heater provided in this application may further include the following steps:

[0120] Output a first pressure range to control the heating operation of the tubular heater based on the first pressure range.

[0121] In some embodiments, the insulation state detection method for a tubular heater provided in this application may further include the following steps:

[0122] Based on the associated data, the second gas pressure range where the safety level of the tubular heater is less than the second threshold is determined.

[0123] In some embodiments, the insulation state detection method for a tubular heater provided in this application may further include the following steps:

[0124] The output includes a prompt message for the second pressure zone.

[0125] For example, in the insulation state detection method for a tubular heater provided in the embodiments of this application, the tubular heater is insulated from the inner wall of the accommodating cavity.

[0126] In the insulation state detection method for a tubular heater provided in this application embodiment, a tubular heater is placed inside a accommodating cavity. This improves the accuracy and specificity of environmental parameter adjustment when the adjustment module regulates the environmental parameters within the accommodating cavity. Furthermore, the detection module can acquire a first electrical signal and a second electrical signal in real time during environmental parameter changes, allowing the changes in these signals to be indirectly correlated with the environmental parameter changes. Simultaneously, the insulation state of the insulating coating determined by the detection module based on the first and second electrical signals comprehensively and accurately characterizes the changes in the insulation performance of the insulating coating during environmental parameter variations. Therefore, the insulation state detection method for a tubular heater provided in this application embodiment can achieve comprehensive and accurate detection of the insulation state of the insulating coating in a tubular heater.

[0127] Based on the foregoing embodiments, this application also provides a computer-readable storage medium storing a calculation program. When executed by a processor of an electronic device, the computer program can implement the insulation state detection method for a tubular heater as provided in any of the preceding embodiments.

[0128] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0129] The methods disclosed in the various method embodiments provided in this application can be arbitrarily combined to obtain new method embodiments without conflict.

[0130] The features disclosed in the various product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0131] The features disclosed in the various method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method or device embodiments.

[0132] It should be noted that the aforementioned computer-readable storage media can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), magnetic random access memory (FRAM), flash memory, magnetic surface memory, optical disc, or compact disc read-only memory (CD-ROM), etc.; or it can be various electronic devices that include one or any combination of the above-mentioned memories, such as mobile phones, computers, tablet devices, personal digital assistants, etc.

[0133] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0134] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0135] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware nodes. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0136] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0137] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0138] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0139] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. An insulation condition detection device for a tubular heater, characterized in that, The device includes: A receiving cavity for accommodating the tubular heater; wherein the tubular heater includes a heating wire, an insulating coating wound around the heating wire, and a protective coating wound around the insulating coating; An adjustment module is used to adjust the environmental parameters within the accommodating cavity; wherein the environmental parameters include at least one of the following: illumination, gravitational acceleration, and air pressure state within the accommodating cavity; the adjustment module adjusts at least one environmental parameter within the accommodating cavity by projecting light into the accommodating cavity and rapidly moving the accommodating cavity; The detection module is used to acquire a first electrical signal through a first detection connector and a second electrical signal through a second detection connector during the change of the environmental parameters, and to detect the insulation state of the insulating coating between the heating wire and the protective coating based on the first electrical signal and the second electrical signal; wherein the first detection connector is connected to the heating wire; and the second detection connector is connected to the protective coating.

2. The apparatus according to claim 1, characterized in that, The adjustment module is disposed outside the cavity of the accommodating cavity and is sealed to the first through hole opened on the cavity of the accommodating cavity, for adjusting the air pressure state inside the accommodating cavity; The detection module is used to detect the insulation state of the insulating coating based on the first electrical signal and the second electrical signal during the change of air pressure.

3. The apparatus according to claim 1, characterized in that, The detection module is disposed outside the cavity of the accommodating cavity; the detection module is sealed to the second through hole opened on the cavity of the accommodating cavity through an electrical connection unit.

4. The apparatus according to claim 1, characterized in that, The detection module is also used to detect changes in the environmental parameters.

5. The apparatus according to claim 1, characterized in that, The device also includes an association module for associating the environmental parameters with the insulation state to obtain associated data.

6. The apparatus according to claim 5, characterized in that, The device further includes a determining module for determining, based on the associated data, a first air pressure range in which the insulation degree of the insulating coating is greater than or equal to a first threshold.

7. The apparatus according to claim 6, characterized in that, The device further includes an output module for outputting the first pressure range, so as to control the heating operation of the tubular heater based on the first pressure range.

8. The apparatus according to claim 6, characterized in that, The determining module is further configured to determine, based on the associated data, a second pressure range in which the safety level of the tubular heater is less than the second threshold.

9. The apparatus according to claim 8, characterized in that, The device also includes an output module for outputting a prompt message that includes the second air pressure range.

10. The apparatus according to any one of claims 1 to 9, characterized in that, The tubular heater is insulated from the inner wall of the accommodating cavity.

11. A method for detecting the insulation status of a tubular heater, characterized in that, The tubular heater includes a heating wire, an insulating coating wound around the heating wire, and a protective coating wound around the insulating coating; the tubular heater is disposed within a receiving cavity; the method includes: Adjusting environmental parameters within the accommodating cavity; wherein the environmental parameters include at least one of illumination, gravitational acceleration, and air pressure within the accommodating cavity; adjusting the environmental parameters within the accommodating cavity includes: adjusting at least one environmental parameter within the accommodating cavity by projecting light into the accommodating cavity and rapidly moving the accommodating cavity; During the change of the environmental parameters, a first electrical signal is acquired through a first detection connector, and a second electrical signal is acquired through a second detection connector; wherein, the first detection connector is connected to the heating wire; and the second detection connector is connected to the protective coating. The insulation state of the insulating coating between the heating wire and the protective coating is detected based on the first electrical signal and the second electrical signal.

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