Pipeline temperature measuring device

Abstract

The utility model provides a pipeline temperature measuring device, which comprises a shell, one side of the shell is provided with an opening, the opening is matched with the outer wall of a pipeline, and the side, away from the opening, of the shell is provided with a limiting groove; the partition plate is fixed in the shell, and a through hole is formed in the partition plate; the component board is located in the shell and arranged on the side, away from the opening, of the partition board; the first thermal resistor penetrates through the through hole, one end of the first thermal resistor is electrically connected with the component board, and the other end of the first thermal resistor abuts against the outer wall of the pipeline; one end of the pressure spring is connected with the partition plate, and the other end of the pressure spring is connected with one end, close to the opening, of the first thermal resistor; the hoop is matched with the limiting groove and used for being arranged on the pipeline in a sleeving mode so as to fix the shell and press the compression spring. The pipeline temperature measuring device is simple in structure, convenient to machine and assemble, high in universality, good in stability, capable of effectively improving the temperature measuring accuracy and long in service life.

Description

Technical Field

[0001] The present application relates to the technical field of temperature measurement, and in particular to a pipeline temperature measuring device. Background Art

[0002] In the production process of alumina plants, it is very important to monitor the temperature of the medium in the pipeline or container. Traditional temperature measurement usually uses inserted armored thermal resistors, but this method is susceptible to medium abrasion and terminal corrosion. With use, it will cause sensor damage and inaccurate measurement. In addition, when maintenance or calibration is required, it is often necessary to shut down the operation, affecting production efficiency. Some technologies use surface temperature measuring devices, but due to improper installation or poor contact, inaccurate measurements often occur. Therefore, there is an urgent need for a pipeline temperature measurement device with higher accuracy and suitable for long-term use. Utility Model Content

[0003] In view of this, the purpose of the present application is to propose a pipeline temperature measurement device to solve the related problems mentioned in the background technology.

[0004] The present application provides a pipeline temperature measuring device, comprising: a shell, one side of which is provided with an opening, the opening is matched with the outer wall of the pipeline, and the side of the shell away from the opening is provided with a limit groove; a partition plate, fixed in the shell, and the partition plate is provided with a through hole; a component board, located in the shell, and arranged on the side of the partition away from the opening; a first thermal resistor, passing through the through hole, one end of the first thermal resistor is electrically connected to the component board, and the other end is used to abut against the outer wall of the pipeline; a compression spring, sleeved on the first thermal resistor, one end of which is connected to the partition plate, and the other end is connected to one end of the first thermal resistor close to the opening; a hoop, matched with the limit groove, used to be sleeved on the pipeline to fix the shell and compress the compression spring.

[0005] Furthermore, a second thermal resistor is provided between the component board and the partition, and the second thermal resistor is electrically connected to the component board.

[0006] Furthermore, a temperature transmitter module, a power supply module, a processing module and a wireless communication module are provided on a side of the component board close to the opening.

[0007] Furthermore, the component board is fixed in the housing, and a bending section is provided at a connection between the first thermal resistor and the component board.

[0008] Furthermore, the cross-sectional shape of the opening along the width direction is arc-shaped, and a gasket is provided at the opening.

[0009] Furthermore, a heat-insulating cotton block is provided between the partition and the opening.

[0010] Further, one limiting groove is respectively arranged on two sides of the housing along the length direction, and each limiting groove is matched with one hoop.

[0011] As can be seen from the above, the pipeline temperature measuring device provided by the present application includes: a housing with an opening on one side, the opening being matched with the outer wall of the pipeline, and a limiting groove being arranged on the side of the housing far from the opening; a partition plate fixed inside the housing, and a through hole being arranged on the partition plate; a component board located inside the housing and arranged on the side of the partition plate far from the opening; a first thermal resistor passing through the through hole, one end of the first thermal resistor being electrically connected to the component board, and the other end being used to abut against the outer wall of the pipeline; a compression spring sleeved on the first thermal resistor, one end being connected to the partition plate and the other end being connected to the end of the first thermal resistor close to the opening; a hoop being matched with the limiting groove and used to be sleeved on the pipeline to fix the housing and compress the compression spring. The housing is matched with the outer wall of the pipeline to form a sealed space to protect the internal component board and the first thermal resistor; the partition plate is arranged to separate the temperature measuring area from the electronic area and provide support for the compression spring; the first thermal resistor abuts against the outer wall of the pipeline to measure the temperature of the pipe wall; the compression spring is arranged to squeeze the partition plate to make the first thermal resistor closely fit with the pipe wall; the hoop is arranged on the outer side of the housing and is matched with the limiting groove, which can not only fix the housing on the pipeline, but also further compress the compression spring to make the first thermal resistor closely fit with the pipe wall, thereby ensuring the accuracy of temperature measurement. The pipeline temperature measuring device has a simple structure, is convenient for processing and assembly, has strong versatility, good stability, can effectively improve the accuracy of temperature measurement, and has a long service life. Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the present application or related technologies, the following will briefly introduce the drawings required for use in the description of the embodiments or related technologies. Obviously, the drawings in the following description are only the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0013] Figure 1 It is a schematic structural diagram of a pipeline temperature measuring device cooperating with a pipeline in an embodiment of the present application;

[0014] Figure 2 It is an exploded structural diagram of a pipeline temperature measuring device in an embodiment of the present application;

[0015] Figure 3 It is a schematic cross-sectional structural diagram of a pipeline temperature measuring device in an embodiment of the present application;

[0016] Figure 4 It is a schematic structural diagram of a first thermal resistor in an embodiment of the present application;

[0017] Figure 5For the different adjustment coefficients A in the embodiments of the present application 1 Schematic diagram of variance test

[0018] Figure 6 For the different adjustment coefficients A in the embodiments of the present application 2 Schematic diagram of variance test

[0019] Figure 7 Schematic diagram of variance test for different constants B in the embodiments of the present application

[0020] Figure 8 Test comparison diagram between the pipeline temperature measuring device and the thermal resistor of the present application

[0021] Reference numerals: 1, housing; 1-1, opening; 1-2, limiting groove; 2, partition; 2-1, through hole; 3, component board; 4, first thermal resistor; 4-1, bent section; 5, compression spring; 6, hoop; 7, second thermal resistor; 8, washer; 9, heat insulation cotton block; 10, pipeline Detailed implementation manners

[0022] To make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below with reference to specific embodiments and the accompanying drawings

[0023] It should be noted that unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should have the ordinary meanings understood by those of ordinary skill in the art to which the present application belongs. The "first", "second" and similar terms used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. The terms such as "including" or "comprising" mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly

[0024] During the production process in an alumina plant, monitoring the temperature of the medium in pipelines or containers is of crucial importance. Traditional temperature measurement usually employs insertion-type armored thermal resistors. However, this method is vulnerable to abrasion by the medium and corrosion of the wiring terminals. Over time, it can lead to sensor damage and inaccurate measurements. Additionally, when maintenance or calibration is required, it often necessitates shutting down the operation, which affects production efficiency. In some technologies, surface-type temperature measurement devices are used, with the wall temperature representing the medium temperature. But due to improper installation or poor contact, inaccurate measurements frequently occur. Therefore, there is an urgent need for a pipeline temperature measurement device with higher accuracy and suitable for long-term use.

[0025] Common industrial temperature measurement methods mostly use thermocouples or thermal resistors. These sensors can be divided into two types: insertion-type and surface-type. Insertion-type sensors need to be directly inserted into the medium. Although the measurement is accurate, there is a risk of abrasion and contamination by the medium. Surface-type sensors do not directly contact the medium, but often suffer from reading errors due to improper installation or environmental factors.

[0026] During the alumina production process, accurately measuring the material temperature is the key to ensuring product quality and production efficiency. Currently, PT100 insertion-type armored thermal resistors are usually used as sensors for measuring the material temperature in alumina plants. This type of sensor is connected by threads or flanges and directly inserts the probe into the pipeline to directly contact the medium for temperature measurement.

[0027] However, since alumina and its raw materials contain relatively high proportions of aluminum, silicon, and other impurities, under the scouring effect of the material flow in the pipeline, these hard particles are extremely likely to cause abrasion and damage to the insertion-type probe. As the abrasion of the probe increases, its measurement accuracy gradually decreases, and ultimately it may lead to measurement failure, affecting the normal operation of the production process and product quality control. In addition, once the probe is damaged, it is necessary to shut down during the replacement process, which not only increases costs but also affects production efficiency. Therefore, in view of this limitation of the existing technology, developing a more durable, accurate, and easy-to-maintain temperature measurement solution has become an urgent need to improve alumina production efficiency and product quality.

[0028] In the existing technology, the installation of surface-type sensors often requires the use of adhesives or mechanical clamps to fix them on the surface of the measurement object. It may result in poor contact between the sensor and the measured surface due to adhesive aging or clamp loosening. Moreover, after most surface temperature measurement sensors are installed, the other surface of the sensor is directly exposed to the outside world, affected by changes in external temperature, rain, and wind speed, which affects the accuracy of the temperature measurement indication. In addition, there is a difference between the wall surface temperature and the actual temperature of the medium, and the true temperature of the medium inside the pipe cannot be directly reflected by the surface temperature.

[0029] On the other hand, most surface sensors are connected to the control system by wired means, which not only increases the complexity and cost of wiring, but also in harsh industrial environments, the cables are prone to damage, affecting the transmission stability.

[0030] The following will detail the technical solution of this application through specific embodiments in conjunction with the appended Figures 1 to 8 drawings.

[0031] In some embodiments of this application, a pipeline temperature measurement device is provided, as Figures 1 to 3 shown, including: a housing 1, with an opening 1-1 on one side, the opening 1-1 being adapted to the outer wall of the pipeline 10, and a limiting groove 1-2 being provided on the side of the housing 1 away from the opening 1-1; a partition 2, fixed inside the housing 1, with a through hole 2-1 provided on the partition 2; a component board 3, located inside the housing 1, arranged on the side of the partition 2 away from the opening 1-1; a first thermal resistor 4, passing through the through hole 2-1, one end of the first thermal resistor 4 being electrically connected to the component board 3, and the other end being adapted to abut against the outer wall of the pipeline 10; a compression spring 5, sleeved on the first thermal resistor 4, one end being connected to the partition 2 and the other end being connected to the end of the first thermal resistor 4 close to the opening 1-1; a hoop 6, cooperating with the limiting groove 1-2, for being sleeved on the pipeline 10 to fix the housing 1 and compress the compression spring 5.

[0032] As Figure 2 shown, the pipeline temperature measurement device includes a housing 1, the material of which is, for example, plastic or metal, etc. An opening 1-1 is provided at the bottom of the housing 1 to facilitate the installation of temperature measurement components inside, as Figure 1 shown, the housing 1 is adapted to the outer wall of the pipeline 10 to form a sealed space to protect the internal component board 3 and the first thermal resistor 4.

[0033] A partition 2 is provided inside the housing 1. The partition 2 can be connected to the studs of the housing 1 by bolts. The partition 2 is provided to separate the temperature measurement area from the electronic area and provide support for the compression spring 5; a through hole 2-1 is provided on the partition 2 to facilitate the first thermal resistor 4 to pass through.

[0034] Above the partition 2 is provided a component board 3, which is used to connect the first thermal resistor 4 to obtain a temperature signal, convert the temperature signal into an electrical signal, and can process it using a conventional temperature algorithm to obtain the temperature of the pipe wall.

[0035] As Figure 3 shown, the first thermal resistor 4 is provided to pass through the through hole 2-1, and one end of the first thermal resistor 4 abuts against the outer wall of the pipeline 10 for measuring the temperature of the pipe wall.

[0036] One end of the compression spring 5 is connected to the bottom end of the first thermal resistor 4, and the other end is connected to the partition 2. When the compression spring 5 is not squeezed, the bottom end of the first thermal resistor 4 extends out of the bottom end of the shell 1; after the compression spring 5 is squeezed, the bottom end of the first thermal resistor 4 can be located in the shell 1; the compression spring 5 squeezes the partition 2, so that the first thermal resistor 4 fits tightly against the pipe wall, so as to accurately measure the pipe wall temperature.

[0037] A clamp 6 is provided on the outside of the shell 1, which cooperates with the limiting groove 1-2, not only can fix the shell 1 on the pipeline 10, but also can further compress the compression spring 5, so that the first thermal resistor 4 fits tightly against the pipe wall, thereby ensuring the accuracy of temperature measurement.

[0038] The pipeline temperature measuring device has a simple structure, is easy to process and assemble, has strong versatility, and has good stability. It can effectively improve the accuracy of temperature measurement and has a long service life. It avoids the risk of failure of the probe rod of the inserted temperature measuring device due to abrasion, reduces the risk of failure due to wear, and extends the service life of the sensor. At the same time, it avoids shutdown for replacement and improves production efficiency.

[0039] In some embodiments, Figure 2 and Figure 3 As shown, a second thermal resistor 7 is provided between the component board 3 and the partition board 2 , and the second thermal resistor 7 is electrically connected to the component board 3 .

[0040] like Figure 2 As shown, a second thermal resistor 7 is provided between the component board 3 and the partition 2. The second thermal resistor 7 can measure the temperature inside the shell 1, so as to compensate for the influence of the temperature change of the external environment on the temperature of the tube wall and further improve the accuracy of temperature measurement.

[0041] In some embodiments, a temperature transmitter module, a power supply module, a processing module and a wireless communication module are provided on a side of the component board 3 close to the opening 1 - 1 .

[0042] The component board 3 is provided with a temperature transmitter module, a power supply module, a processing module and a wireless communication module. The temperature transmitter module can convert the temperature signal measured by the first thermal resistor 4 and / or the second thermal resistor 7 into an electrical signal; the power supply module is used for power supply, for example, it can ensure independent power supply for more than 2 years, which is convenient for long-term monitoring; the processing module has a temperature algorithm, which can convert the electrical signal into a digital signal; the wireless communication module, such as a Lora module, can transmit the signal to a wireless gateway and other devices.

[0043] In some embodiments, Figure 3 and Figure 4 As shown, the component board 3 is fixed in the housing 1 , and a bending section 4 - 1 is provided at the connection between the first thermal resistor 4 and the component board 3 .

[0044] likeFigure 3 As shown, the component board 3 can also be bolted to the studs of the housing 1. After the component board 3 is fixed, in order to ensure that the first thermal resistor 4 can be extruded and moved, as Figure 4 shown, a bending section 4-1 is provided at the connection between the first thermal resistor 4 and the component board 3 to achieve flexible connection and facilitate the movement of the first thermal resistor 4.

[0045] In some embodiments, as Figure 2 and Figure 3 shown, the cross-sectional shape of the opening 1-1 along the width direction is arc-shaped, and a washer 8 is provided at the opening 1-1.

[0046] As Figure 1 shown, in the figure, the L direction is the length direction and the W direction is the width direction. As Figure 2 shown, the cross-sectional shape of the opening 1-1 along the width direction is arc-shaped, which can facilitate the matching with the pipe wall shape and improve the sealing performance of the housing 1.

[0047] A groove is provided at the bottom of the housing 1, and a washer 8 is embedded in the groove. The material is, for example, rubber, which fills the gap between the housing 1 and the pipe wall, further improving the sealing performance and waterproof effect of the housing 1 and preventing external interference.

[0048] In some embodiments, as Figure 2 and Figure 3 shown, a heat-insulating cotton block 9 is provided between the partition plate 2 and the opening 1-1.

[0049] As Figure 3 shown, a heat-insulating cotton block 9 is provided between the partition plate 2 and the opening 1-1, which plays a role in heat insulation, avoids the influence of heat conduction on the service life of the components, and constructs a stable surface temperature measurement environment through the housing 1, the partition plate 2, the heat-insulating cotton block 9, and the washer 8, ensuring that the temperature measurement is not easily affected by changes in the external environment. A cylindrical channel is provided in the middle of the heat-insulating cotton block 9 to facilitate the first thermal resistor 4 to pass through without affecting the measurement.

[0050] In some embodiments, as Figure 1 and Figure 2 shown, a limiting groove 1-2 is provided on each side of the housing 1 along the length direction, and each limiting groove 1-2 is matched with a hoop 6.

[0051] As Figure 1 shown, two limiting grooves 1-2 are provided at the top of the housing 1, and each limiting groove 1-2 is embedded with a hoop 6. The temperature measurement device is tightly attached to the pipeline 10 through the two hoops 6, and the stability is good.

[0052] In some embodiments, the pipeline temperature measuring device further includes a wireless gateway, which internally includes a Lora wireless receiving module, a processor module, and a storage module. The external interface includes a 4V to 12V power supply interface and a 485 communication interface. The 485 communication interface is used to communicate or perform system settings with other devices or a computer through the MODBUS RTU protocol. The need for wiring is reduced through wireless transmission, providing higher installation flexibility.

[0053] The description of the present application is given for purposes of illustration and description, and is not intended to be exhaustive or to limit the present application to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present application, and to enable those of ordinary skill in the art to understand the present application and thus design various embodiments with various modifications suitable for specific purposes.

[0054] Those of ordinary skill in the art should understand that: the discussion of any of the above embodiments is only exemplary, and is not intended to imply that the scope of the present application (including the claims) is limited to these examples; under the concept of the present application, the technical features between the above embodiments or different embodiments can also be combined, and there are many other variations in different aspects of the embodiments of the present application as described above, which are not provided in detail for the sake of brevity.

[0055] Based on the same inventive concept, the present application also provides a pipeline temperature measurement method, which uses the pipeline temperature measuring device described in any of the above embodiments. The method includes: obtaining the outer wall temperature of the pipeline 10 through the first thermal resistor 4; calculating the medium temperature inside the pipeline 10 according to the outer wall temperature.

[0056] The first thermal resistor 4 can measure the outer wall temperature of the pipeline 10. When calculating roughly, the medium temperature can be equal to the outer wall temperature; in some embodiments, a series of gradient experiments can also be set to determine the proportional relationship between the outer wall temperature and the actual medium temperature, and the medium temperature is calculated according to the proportionality coefficient and the outer wall temperature, which is not limited herein; this pipeline temperature measurement method is simple and convenient, and can obtain relatively accurate medium temperature.

[0057] In some embodiments, the pipeline temperature measuring device includes a second thermal resistor 7. The pipeline temperature measurement method further includes: obtaining the internal temperature of the housing 1 through the second thermal resistor 7; calculating the medium temperature inside the pipeline 10 according to the outer wall temperature includes: calculating the medium temperature according to the internal temperature and the outer wall temperature.

[0058] By adding a second thermal resistor 7, the internal temperature of the housing 1 can be measured, so that the influence amount of the external air temperature on the inside of the device can be understood, in order to calculate the medium temperature more accurately.

[0059] In some embodiments, calculating the medium temperature according to the internal temperature and the outer wall temperature includes: Where T is the medium temperature, T 1 is the outer wall temperature, T 2 is the internal temperature, δ is the wall thickness, λ is the wall thermal conductivity, A 1 and A 2 are adjustment coefficients, and B is a constant.

[0060] A 1 ·T 1 The term represents the actual temperature of the outer wall surface of the pipe measured by the temperature measuring device under the coupling fixing method of the compression spring, the housing, the partition board, and the hoop. Among them, A 1 is a coefficient used to adjust the influence of T 1 on T.

[0061] The whole term represents the temperature difference from the inner wall to the outer wall of the pipe calculated by constructing a steady-state system through the outer wall temperature and the internal temperature; the ratio reflects the heat transfer efficiency through the pipe wall, and A 2 is a coefficient used to adjust the influence of this term on T.

[0062] The B term is a constant term used to adjust the finally calculated medium temperature.

[0063] This formula provides a more accurate and reliable temperature measurement method. By compensating the temperature indication through the historical data induction algorithm, a more accurate medium temperature can be obtained.

[0064] In some embodiments, an external environment with variable temperature is provided, and the temperature change range is from -20°C to 50°C; a cylindrical constant temperature water bath tube with adjustable internal temperature is provided, and the temperature change range is from 30°C to 100°C; a pipeline temperature measuring device is installed on the outer surface of the water bath tube; and real-time data of the outer wall temperature and the internal temperature are obtained.

[0065] The experimental method includes changing the temperature of the water bath tube, with the temperature range changing from 50°C to 100°C and the span being 5°C; changing the external environment temperature, with the temperature range changing from -20°C to 50°C and the span being 5°C; maintaining a sufficient duration during this period to ensure steady-state heat conduction, and recording the temperature measurement data at different water bath temperatures under different external temperature conditions.

[0066] The medium temperature is calculated using the relationship: Where T is the medium temperature, with the unit of °C; T 1 is the outer wall temperature measured by the device, with the unit of °C; T 2The internal temperature measured by the device, in °C; δ is the wall thickness of the medium to be measured, with a value of 10, in mm; λ is the thermal conductivity of the wall of the medium to be measured, with a value of 1.0016, in W / (m·K); A 1 is the coefficient for adjusting T 1 The coefficient affecting T varies between 0 and 2.0; A 2 is for adjustment The coefficient affecting T varies between 0 and 2.0; B is a constant term, with a value varying between 0 and 1.4.

[0067] By adjusting the values of A 1 、A 2 and B, compare the calculated medium temperature with the actual water bath temperature, and calculate the error variance. The experimental results are as Figures 5 to 7 shown. It can be seen that when A 1 is 1.0, A 2 is 0.5, and B is 0.7, the variance is the smallest, that is, the calculated medium temperature is the most accurate. Too high or too low parameter values will affect the calculation accuracy of the medium temperature.

[0068] In some embodiments, a pipeline temperature measuring device is installed on the heat exchanger pipeline of a certain alumina company to measure the medium temperature. The test time is from April 14, 2024 to May 2, 2024. The calculation formula for the medium temperature is where A 1 is 1.0, A 2 is 0.5, and B is 0.7; at the same time, an inserted armored thermal resistance is installed on this pipeline to measure the medium temperature. The temperature measurement results of the two methods are as Figure 8 shown. It can be seen that the difference fluctuates between ±0.2 °C, and the difference is very small, indicating that the pipeline temperature measuring device of the present application can accurately measure the pipeline medium temperature and is suitable for long-term use.

[0069] Those of ordinary skill in the art should understand that the discussion of any above embodiments is only exemplary and is not intended to imply that the scope of the present application (including the claims) is limited to these examples; under the idea of the present application, the technical features between the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the embodiments of the present application as described above, and they are not provided in detail for the sake of brevity.

[0070] In addition, in the case of elaborating details to describe the exemplary embodiments of the present application, it is obvious to those skilled in the art that the present application embodiments can be implemented without these details or with changes to these details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0071] Although the present application has been described in connection with embodiments thereof, many alternatives, modifications, and variations of these embodiments will be apparent to those of ordinary skill in the art in light of the foregoing description.

[0072] Embodiments of the present application are intended to cover all such alternatives, modifications, and variations that fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application shall be included within the scope of protection of the present application.

Claims

1. A pipeline temperature measuring device, characterized in that: include: A shell, one side of which is provided with an opening, the opening matches with the outer wall of the pipe, and a side of the shell away from the opening is provided with a limiting groove; A partition plate is fixed in the shell, and a through hole is provided on the partition plate; A component board is located in the housing and is arranged on a side of the partition away from the opening; a first thermal resistor, passing through the through hole, wherein one end of the first thermal resistor is electrically connected to the component board, and the other end of the first thermal resistor is used to abut against the outer wall of the pipeline; A compression spring, sleeved on the first thermal resistor, with one end connected to the partition and the other end connected to an end of the first thermal resistor close to the opening; The clamp cooperates with the limiting groove and is used to be sleeved on the pipe to fix the shell and compress the compression spring.

2. The pipeline temperature measuring device according to claim 1, characterized in that: A second thermal resistor is provided between the component board and the partition, and the second thermal resistor is electrically connected to the component board.

3. The pipeline temperature measuring device according to claim 1, characterized in that: A temperature transmitter module, a power supply module, a processing module and a wireless communication module are arranged on one side of the component board close to the opening.

4. The pipeline temperature measuring device according to claim 1, characterized in that: The component board is fixed in the housing, and a bending section is provided at the connection between the first thermal resistor and the component board.

5. The pipeline temperature measuring device according to claim 1, characterized in that: The cross-sectional shape of the opening along the width direction is an arc, and a gasket is provided at the opening.

6. The pipeline temperature measuring device according to claim 1, characterized in that: A heat-insulating cotton block is arranged between the partition and the opening.

7. The pipeline temperature measuring device according to claim 1, characterized in that: A limiting groove is respectively provided on both sides of the shell along the length direction, and each limiting groove cooperates with a clamp.

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