A temperature sensor for flue gas duct temperature detection

Abstract

The utility model relates to temperature sensor technical field especially relates to a temperature sensor for flue gas pipeline temperature detection, including thermistor, the both ends of thermistor are connected with the lead wire of mutual fixedly, the outer surface of thermistor and the outer surface right part of lead wire all are wrapped with epoxy resin, the outer surface left part of lead wire is sleeved with heat shrink tube, the outer surface left part of heat shrink tube is provided with metal fixed baffle assembly, a temperature sensor for flue gas pipeline temperature detection, with thermistor and lead wire realize temperature signal accurate conversion transmission, epoxy resin and heat shrink tube double protection, improve anti -interference and durability, metal fixed baffle assembly design is flexible, through the mounting hole adaptation different length pipeline, L type structure guarantees the installation firm, the structure is simplified and the production process is simplified, reduce cost, improve efficiency, satisfy the demand of diversification installation and production.

Description

Technical Field

[0001] This utility model relates to the field of temperature sensor technology, and in particular to a temperature sensor for detecting the temperature of flue gas ducts. Background Technology

[0002] Temperature sensors are devices that convert temperature variables into standardized output signals. Currently, most temperature sensors used for flue gas duct temperature detection are thermistors encapsulated in a metal casing. These products have significant drawbacks, including limitations in size and adaptability. The metal casing structure results in a large overall size, and the fixed length of the detection duct makes it difficult to flexibly install in flue gas ducts of different lengths, leading to poor adaptability. In addition, there are production and cost issues. The complex internal structure of the metal casing requires the combination of multiple components, resulting in a cumbersome process, numerous turnover steps, and limited production efficiency, leading to high costs. To address these market pain points and meet diverse needs, a temperature sensor with a fixed baffle riveted to a water droplet encapsulation type is proposed. Utility Model Content

[0003] The main objective of this invention is to provide a temperature sensor for detecting the temperature of flue gas ducts, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A temperature sensor for detecting the temperature of flue gas ducts includes a thermistor with leads fixedly connected to both ends of the thermistor. The outer surface of the thermistor and the right side of the outer surface of the leads are both covered with epoxy resin. A heat shrink tubing is sleeved on the left side of the outer surface of the leads. A metal fixing baffle assembly is provided on the left side of the outer surface of the heat shrink tubing.

[0006] Preferably, the metal fixing baffle assembly includes a sleeve, which is inserted and fixedly connected to the outer surface of the heat shrink tubing. Four rivets are fixedly connected to the upper part of the outer surface of the sleeve. The sleeve is riveted to a metal baffle by the four rivets. The upper part of the left end of the metal baffle has a through mounting hole.

[0007] By adopting the above technical solution: the sleeve is fixed with the heat shrink tubing, the metal baffle is riveted with rivets, and the mounting holes are easy to install. Its function is to fix the temperature sensor, which can be adapted to different installation scenarios. Moreover, the structure is simple, the installation and disassembly are convenient, and the flexibility and efficiency of use are improved.

[0008] Preferably, the lead wire and both ends of the thermistor are connected together by welding.

[0009] By adopting the above technical solution, the sensor is connected to a thermistor by welding to transmit electrical signals. This ensures that the electrical signals generated by temperature changes can be transmitted stably, guaranteeing the normal operation of the sensor and realizing reliable transmission of temperature signals.

[0010] Preferably, after the epoxy resin is encapsulated and molded, the tail end and the lead wire are together fitted into a heat shrink tubing for shrinkage, and the heat shrink tubing is located on the left side of the thermistor.

[0011] By adopting the above technical solution, epoxy resin is used to wrap the thermistor and lead wires to provide insulation protection, and heat shrink tubing is used to further reinforce the protection of the lead wires. The combination of the two can prevent moisture and corrosion, and enhance the stability and service life of the sensor.

[0012] Preferably, the metal baffle has an L-shaped structure.

[0013] By adopting the above technical solution: the unique L-shaped design, which is matched with the lead wire to determine the installation size, can be adapted to a variety of installation environments, making it easy to fix the sensor in different positions, and can enhance the stability of the sensor after installation, preventing the detection accuracy from being affected by external force shaking.

[0014] Preferably, the sum of the lengths of the right portion after the metal baffle intersects with the lead wire is the installation dimension of the temperature sensor.

[0015] By adopting the above technical solution, the installation dimensions are clearly defined to facilitate precise installation, ensure that the sensor is compatible with the flue gas duct, enable the sensor to work stably, avoid detection deviations caused by installation dimension errors, and improve the accuracy and reliability of temperature detection.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In this utility model, the thermistor is connected to the lead wire to realize temperature signal conversion and transmission. The epoxy resin and heat shrink tubing provide double protection, enhancing insulation and stability and resisting external environmental interference. In the metal fixed baffle assembly, the sleeve, rivet and L-shaped metal baffle cooperate to achieve flexible installation through the mounting hole, breaking through the limitation of traditional fixed detection length and adapting to flue gas pipes of different sizes.

[0018] 2. In this utility model, the thermistor, combined with leads, achieves accurate temperature measurement and signal transmission. The dual protection of epoxy resin and heat shrink tubing simplifies the external protection structure. The metal fixing baffle assembly uses a combination of sleeves, rivets, and L-shaped metal baffles, resulting in a simple structure and stable connection. This reduces the number of parts and assembly steps. The mounting hole and standardized installation dimensions reduce installation difficulty and debugging time. The overall structural design is streamlined, simplifying the production process, reducing turnover steps, improving production efficiency, and lowering material and labor costs, thus meeting the market demand for high-performance, cost-effective temperature sensors. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a temperature sensor for detecting the temperature of flue gas ducts according to the present invention.

[0020] Figure 2 This is a schematic diagram of the connection structure between the thermistor, epoxy resin, and leads of a temperature sensor for flue gas duct temperature detection according to the present invention.

[0021] Figure 3 This is a cross-sectional schematic diagram of the connection between the lead wire and heat shrink tubing of a temperature sensor for detecting the temperature of flue gas ducts according to this utility model.

[0022] Figure 4 This is a schematic diagram of the overall structure of a metal fixed baffle assembly for a temperature sensor used for flue gas duct temperature detection according to the present invention.

[0023] In the diagram: 1. Thermistor; 2. Epoxy resin; 3. Lead wire; 4. Heat shrink tubing; 5. Metal fixing baffle assembly; 51. Sleeve; 52. Rivet; 53. Metal baffle; 54. Mounting hole. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Please see Figure 1-4 This utility model provides a technical solution:

[0028] A temperature sensor for detecting the temperature of flue gas ducts includes a thermistor 1, with leads 3 fixedly connected to both ends of the thermistor 1. The outer surface of the thermistor 1 and the right side of the outer surface of the leads 3 are both covered with epoxy resin 2. A heat shrink tubing 4 is sleeved on the left side of the outer surface of the leads 3. A metal fixing baffle assembly 5 is provided on the left side of the outer surface of the heat shrink tubing 4.

[0029] In this embodiment, the metal fixing baffle assembly 5 includes a sleeve 51, which is fixedly connected to the outer surface of the heat shrink tubing 4. Four rivets 52 are fixedly connected to the upper part of the outer surface of the sleeve 51. The sleeve 51 is riveted to a metal baffle 53 by the four rivets 52. The upper left end of the metal baffle 53 has a through mounting hole 54. The lead wire 3 and the two ends of the thermistor 1 are connected together by welding. After the epoxy resin 2 is encapsulated and molded, the tail end and the lead wire 3 are together fitted into the heat shrink tubing 4 for shrinkage. The heat shrink tubing 4 is located on the left side of the thermistor 1. The metal baffle 53 has an L-shaped structure. The sum of the lengths of the right part after the metal baffle 53 intersects with the lead wire 3 is the installation dimension of the temperature sensor.

[0030] The above scheme works as follows: During operation, the thermistor 1 senses the flue gas temperature and converts the temperature signal into an electrical signal, which is transmitted through the welded lead wire 3. The right side of the lead wire 3 is protected by epoxy resin 2 and heat shrink tubing 4 to prevent external environmental interference and ensure stable signal transmission. In the metal fixing baffle assembly 5, the sleeve 51 is fixed to the heat shrink tubing 4. With the help of rivets 52 and L-shaped metal baffles 53, flexible installation is achieved through the mounting holes 54, which can adapt to flue gas pipes of different lengths. Therefore, compared with the traditional metal shell structure, this sensor is smaller in size, more flexible in installation, reduces the number of parts, simplifies the production process, improves production efficiency, reduces costs, and meets the diverse needs of the market.

[0031] It should be noted that this utility model is a temperature sensor for detecting the temperature of flue gas ducts. During operation, the thermistor 1, as the core sensing component, first detects the temperature change inside the flue gas duct, converts the temperature signal into an electrical signal, and then transmits the electrical signal stably to external equipment via leads 3 welded to both ends. The external part is then encapsulated with epoxy resin 2 as an insulating layer. After encapsulation with epoxy resin 2, heat shrink tubing 4 is inserted into the tail end and lead wire 3 for shrinkage, further reinforcing protection and improving the sensor's stability and durability. The sleeve 51 in the metal fixing baffle assembly 5 is then connected to the heat... The heat shrink tubing 4 is inserted and fixed, and four rivets 52 rivet the sleeve 51 to the L-shaped metal baffle 53. Through the mounting hole 54, it can be flexibly installed in flue gas ducts of different lengths. The installation dimensions determined by the metal baffle 53 and the lead wire 3 ensure the accuracy and adaptability of the installation. In summary, through a unique structural design, thermistor 1 is used as the core to achieve accurate temperature measurement, epoxy resin 2 and heat shrink tubing 4 ensure stable operation, and metal fixed baffle assembly 5 improves installation flexibility. This solves the problems of large size, poor adaptability and complex production of traditional sensors, and achieves multiple beneficial effects such as efficient and accurate temperature measurement, convenient installation and low-cost production.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A temperature sensor for detecting the temperature of flue gas ducts, comprising a thermistor (1), characterized in that: The two ends of the thermistor (1) are fixedly connected to the lead wire (3). The outer surface of the thermistor (1) and the right side of the outer surface of the lead wire (3) are both wrapped with epoxy resin (2). The left side of the outer surface of the lead wire (3) is fitted with a heat shrink tube (4). The left side of the outer surface of the heat shrink tube (4) is provided with a metal fixing baffle assembly (5).

2. A temperature sensor for detecting the temperature of flue gas ducts according to claim 1, characterized in that: The metal fixing baffle assembly (5) includes a sleeve (51), which is inserted and fixedly connected to the outer surface of the heat shrink tubing (4). Four rivets (52) are fixedly connected to the upper part of the outer surface of the sleeve (51). A metal baffle (53) is riveted to the sleeve (51) by the four rivets (52). The upper part of the left end of the metal baffle (53) has a through mounting hole (54).

3. A temperature sensor for detecting the temperature of flue gas ducts according to claim 1, characterized in that: The lead (3) and the two ends of the thermistor (1) are connected together by welding.

4. A temperature sensor for detecting the temperature of flue gas ducts according to claim 1, characterized in that: After the epoxy resin (2) is encapsulated and molded, the tail end and the lead wire (3) are together fitted with a heat shrink tube (4) for shrinkage. The heat shrink tube (4) is located to the left of the thermistor (1).

5. A temperature sensor for detecting the temperature of flue gas ducts according to claim 2, characterized in that: The metal baffle (53) has an L-shaped structure.

6. A temperature sensor for detecting the temperature of flue gas ducts according to claim 2, characterized in that: The sum of the lengths of the right side of the metal baffle (53) after it intersects with the lead wire (3) is the installation dimension of the temperature sensor.

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