A sensor device for measuring the temperature of the inner wall of a pipe

Abstract

The utility model relates to temperature measurement technical field especially, and it is a kind of sensor device for measuring pipeline inner wall temperature, including support pipe (1), at least one elastic compression assembly (2) is equipped on support pipe (1), arc temperature sensing block (3) is equipped on elastic compression assembly (2), temperature sensor is equipped in arc temperature sensing block (3).The utility model structure is novel, through the design of arc matching and elastic compression, the air gap between sensor and pipe wall is eliminated, the contact thermal resistance is significantly reduced, so as to be able to accurately detect the real temperature of pipeline inner wall.Especially suitable for the pipeline inner wall temperature measurement scene of small pipe diameter, not easy to contact, solve the problem that traditional sensor cannot be installed and adhere.Meanwhile, the application has low use cost, is easy to process, has greater market promotion value.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement technology, and in particular to a sensor device for measuring the temperature of the inner wall of a pipe. Background Technology

[0002] In numerous scientific and industrial fields such as petrochemicals, energy, and aerospace, precise measurement of the temperature of the inner wall of fluid pipelines is frequently required. This is a critical parameter used to analyze heat transfer efficiency, monitor equipment safety, and control reaction processes. Currently, the common measurement method involves inserting rod-shaped or probe-type temperature sensors (such as thermocouples and resistance temperature detectors) into the pipe opening. However, this method is ineffective when dealing with pipes of small diameter and long length, as the sensor struggles to reach the desired measurement point. Even when reaching the designated location, traditional sensors often fail to achieve stable and comprehensive physical contact with the pipe's inner wall, as an air gap typically exists. Since air has a much higher thermal resistance than metal, this leads to significant measurement errors and fails to reflect the true temperature of the pipe's inner wall. Furthermore, a single sensor can only provide data from a single point and cannot acquire information on the temperature distribution at different locations along the axial or circumferential direction of the pipe.

[0003] Therefore, those skilled in the art are dedicated to developing a sensor device that is easy to operate, accurate in measurement, and highly adaptable for measuring the temperature of the inner wall of a pipe. Utility Model Content

[0004] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a sensor device for measuring the temperature of the inner wall of a pipe.

[0005] To achieve the above objectives, this utility model provides a sensor device for measuring the temperature of the inner wall of a pipe, including a support tube, at least one elastic clamping component on the support tube, an arc-shaped temperature sensing block on the elastic clamping component, and a temperature sensor inside the arc-shaped temperature sensing block.

[0006] Preferably, the elastic clamping assembly includes a positioning ring, which is sleeved on the support tube. The positioning ring is provided with a guide rod, and an elastic element is sleeved on the guide rod. One end of the elastic element is connected to the positioning ring, and the other end is connected to the arc-shaped temperature sensing block.

[0007] Preferably, the elastic clamping assembly is provided in three parts, and the three elastic clamping assemblies are distributed at intervals along the axial direction of the support tube.

[0008] Preferably, the elastic element is one or more of a compression spring, a disc spring, and a nitrogen spring.

[0009] Preferably, one end of the support tube is provided with an adapter sleeve, and the end of the adapter sleeve away from the support tube is provided with an output lead, and the output lead is provided with an adapter cap.

[0010] Preferably, a positioning block is provided at the end of the support tube away from the adapter sleeve, and the diameter of the positioning block is greater than or equal to the diameter of the support tube.

[0011] Preferably, the arc-shaped temperature sensing block is made of copper or aluminum.

[0012] Preferably, the temperature sensor is a thermocouple or a resistance temperature detector (RTD).

[0013] The beneficial effects of this utility model are as follows: This utility model has a novel structure. Through the arc-shaped matching and elastic clamping design, it eliminates the air gap between the sensor and the pipe wall, significantly reducing contact thermal resistance. This enables accurate detection of the true temperature of the pipe's inner wall, making it particularly suitable for measuring the temperature of pipes with small diameters and difficult-to-reach inner walls. It solves the problem of traditional sensors being unable to be installed and properly fitted. Furthermore, this application has low operating costs, is easy to process, and has significant market potential. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0015] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0016] 1. Support tube; 2. Elastic clamping assembly; 21. Positioning ring; 22. Guide rod; 23. Elastic element; 3. Arc-shaped temperature sensing block; 4. Adapter sleeve; 5. Positioning block; 6. Output lead wire; 7. Adapter cap. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that in the description of the present invention, terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and for 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 manner. Therefore, they should not be construed as limitations on the present invention. Terms such as "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] like Figure 1 As shown, a sensor device for measuring the temperature of the inner wall of a pipe includes a support pipe 1. In this embodiment, the support pipe 1 is made of stainless steel pipe as the mounting base to ensure its structural strength.

[0019] In this embodiment, the support pipe 1 is provided with three elastic clamping components 2, which are distributed circumferentially along the axial direction of the support pipe 1. In other embodiments, other numbers of elastic clamping components 2 can be set according to actual needs. By setting different numbers of elastic clamping components 2, multi-angle, multi-depth, and high-precision temperature measurement of the inner wall of the pipe (not shown in the figure) can be achieved. Specifically, each set of elastic clamping components 2 includes a positioning ring 21, which serves as the mounting base for the elastic clamping component 2 and is sleeved on the outside of the support pipe 1 and can slide along the axial direction of the support pipe 1. The positioning ring 21 is provided with a guide rod 22, which extends radially along the support pipe 1, and an elastic element 23 is sleeved on it. In this embodiment, the elastic element 23 is a compression spring. In other embodiments, other similar products such as disc springs and nitrogen springs can also be used. The elastic element 23 is used to provide a continuous and stable elastic restoring force. In other embodiments, a locking bolt (not shown in the figure) may be added to the positioning ring 21. The positioning ring 21 can be locked or unlocked by tightening or loosening the locking bolt, thereby fixing or adjusting the axial position of the elastic pressing component 2 and the connected detection component.

[0020] An arc-shaped temperature sensing block 3 is connected to the end of the elastic element 23 away from the support pipe 1. This arc-shaped temperature sensing block 3 is made of a highly thermally conductive metal material, such as copper, aluminum, or their alloys. Under the elastic restoring force provided by the elastic element 23, the arc-shaped temperature sensing block 3 can be continuously and stably pressed against the inner wall of the pipe, effectively eliminating contact thermal resistance and ensuring the accuracy and real-time performance of temperature detection. Simultaneously, the arc-shaped temperature sensing block 3 also has an internal mounting cavity (not shown in the figure) for embedding a temperature sensor (not shown in the figure). This temperature sensor can be a thermocouple, a resistance temperature detector (RTD), or other similar temperature sensing elements. The high thermal conductivity of the arc-shaped temperature sensing block 3 enables it to quickly sense changes in the temperature of the inner wall of the pipe and transmit this information to the temperature sensor, thereby achieving accurate temperature measurement. Furthermore, the arc-shaped contour of the arc-shaped temperature sensing block 3 can match the curvature of the inner wall of the pipe, further increasing the contact area and improving the consistency and reliability of temperature measurement.

[0021] In this embodiment, an adapter sleeve 4 is provided at one end of the support tube 1. The adapter sleeve 4 is fixedly connected to the support tube 1 and is used to connect the internal wiring to external equipment. An output lead 6 is connected to the end of the adapter sleeve 4 away from the support tube 1. This lead is responsible for transmitting the electrical signal collected by the temperature sensor (not shown in the figure) to an external acquisition system or display unit. An adapter cap 7 is further provided on the output lead 6. The adapter cap 7 provides electrical insulation, mechanical protection, and interface standardization adaptation functions to ensure a stable connection and adapt to the interface requirements of different devices.

[0022] A positioning block 5 is provided at the other end of the support tube 1 away from the adapter sleeve 4. The outer diameter of the positioning block 5 is larger than the outer diameter of the support tube 1. This design enables the positioning block 5 to achieve rapid positioning and reliable fixation of the device during installation, effectively preventing the entire measuring device from being over-inserted into the pipe or from shifting, thereby ensuring the accuracy of the axial position of the sensor array in the pipe.

[0023] In use, the support tube 1 is first inserted into the pipe to be tested, ensuring that the axis of the support tube 1 is substantially parallel to the axis of the pipe. At this time, the arc-shaped temperature sensing block 3 is tightly pressed against the inner wall of the pipe by the elastic restoring action of the elastic element 23, ensuring no gap between it and the inner wall of the pipe being tested. The temperature sensor detects the temperature change of the arc-shaped temperature sensing block 3 in real time and converts the collected information into an electrical signal. This signal is transmitted through a lead wire inserted inside or arranged along the outside of the support tube 1, and finally output to an external display or recording device via the output lead wire 6 and the adapter cap 7, achieving accurate, stable, and reliable real-time monitoring of the pipe's inner wall temperature.

[0024] This invention features a novel structure. Through an arc-shaped matching and elastic clamping design, it eliminates the air gap between the sensor and the pipe wall, significantly reducing contact thermal resistance and enabling accurate detection of the true temperature of the pipe's inner wall. It is particularly suitable for measuring the temperature of pipe inner walls in small-diameter pipes that are difficult to access, solving the problem of traditional sensors being unable to be installed and properly fitted. Furthermore, this invention has low operating costs, is easy to manufacture, and has significant market potential.

[0025] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A sensor device for measuring the temperature of the inner wall of a pipe, characterized in that: It includes a support tube (1), on which at least one elastic pressing component (2) is provided, and on which an arc-shaped temperature sensing block (3) is provided, and a temperature sensor is provided inside the arc-shaped temperature sensing block (3).

2. The sensor device for measuring the temperature of the inner wall of a pipe as described in claim 1, characterized in that: The elastic clamping assembly (2) includes a positioning ring (21), which is sleeved on the support tube (1). The positioning ring (21) is provided with a guide rod (22), and the guide rod (22) is sleeved with an elastic element (23). One end of the elastic element (23) is connected to the positioning ring (21), and the other end is connected to the arc-shaped temperature sensing block (3).

3. The sensor device for measuring the temperature of the inner wall of a pipe as described in claim 1 or 2, characterized in that: The elastic clamping assembly (2) is configured as three, and the three elastic clamping assemblies (2) are distributed at intervals along the axial direction of the support tube (1).

4. The sensor device for measuring the temperature of the inner wall of a pipe as described in claim 2, characterized in that: The elastic element (23) is one or more of a compression spring, a disc spring, and a nitrogen spring.

5. The sensor device for measuring the temperature of the inner wall of a pipe as described in claim 1, characterized in that: One end of the support tube (1) is provided with an adapter sleeve (4), and the end of the adapter sleeve (4) away from the support tube (1) is provided with an output lead (6), and the output lead (6) is provided with an adapter cap (7).

6. The sensor device for measuring the temperature of the inner wall of a pipe as described in claim 5, characterized in that: The support tube (1) has a positioning block (5) at one end away from the adapter sleeve (4), and the diameter of the positioning block (5) is greater than or equal to the diameter of the support tube (1).

7. The sensor device for measuring the temperature of the inner wall of a pipe as described in claim 1, characterized in that: The arc-shaped temperature sensing block (3) is made of copper or aluminum.

8. The sensor device for measuring the temperature of the inner wall of a pipe as described in claim 1, characterized in that: The temperature sensor is a thermocouple or a resistance temperature detector (RTD).

Images