High-temperature-resistant temperature transmitter

Abstract

A high-temperature-resistant temperature transmitter comprises a main body shell, a circuit board is horizontally arranged at the top of an inner cavity of the main body shell, the circuit board is next to the top of the inner cavity of the main body shell, a sealing nut is fixedly installed at the bottom of the main body shell through threads, a hollow pipe is fixedly installed on the sealing nut, one end of the hollow pipe penetrates into the main body shell, and the other end of the hollow pipe is fixedly connected with the circuit board. A process connecting thread is fixedly arranged on the hollow pipe; the circuit board is horizontally arranged at the top of the inner cavity of the main body shell, the distance between the circuit board and a measured medium is increased, heat energy acquisition is reduced, the product size is reduced, use is convenient, meanwhile, heat insulation materials are fully distributed in the inner cavity of the main body shell, heat energy transmission is hindered, the circuit board is better protected, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of thermal resistors, in particular to a high-temperature resistant temperature transmitter. Background Technique

[0002] In the industrial production process, temperature is one of the important parameters that need to be measured and controlled. In temperature measurement, thermal resistors are widely used. It has many advantages such as simple structure, convenient manufacturing, wide measurement range, high accuracy, small inertia, and the output signal is convenient for remote transmission. In addition, since the thermal resistor is a passive sensor and does not require an external power supply during measurement, it is very convenient to use. Therefore, it is often used to measure the temperature of gases or liquids in containers, pipelines and the surface temperature of solids;

[0003] At present, during the detection process of products with thermal resistors, due to their use in high-temperature environments, the circuit board will be in a high temperature for a long time, which will reduce the measurement accuracy and durability of the products and affect their service life. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-temperature resistant temperature transmitter to solve the problems raised in the above background technique.

[0005] The utility model solves its technical problems by adopting the following technical solutions:

[0006] A high-temperature resistant temperature transmitter includes a main body shell. The top of the inner cavity of the main body shell is horizontally provided with a circuit board, and the circuit board is close to the top of the inner cavity of the main body shell. The bottom of the main body shell is fixedly installed with a closed nut through threads. The closed nut is fixedly installed with a hollow tube. A process connection thread is fixedly provided below the hollow tube. The process connection thread is connected to a protection tube. A thermal resistor is provided at the bottom of the inner cavity. The thermal resistor is connected to the circuit board through a wire. An insulating material is provided in the inner cavity of the main body shell. The insulating material fills the entire chamber. The insulating material can be a solid insulating material or a colloidal insulating material.

[0007] Preferably, an aviation plug is fixedly provided at the top of the main body shell, and the aviation plug is connected to the circuit board through a connector.

[0008] Preferably, the insulating material is insulating glue, porous material, or polystyrene board insulating layer.

[0009] Preferably, a certain amount of thermal conductive silicone grease is filled between the thermal resistor and the inner wall surface of the protection tube.

[0010] The advantages and positive effects of the utility model are:

[0011] 1. By horizontally placing the circuit board at the top of the inner cavity of the main body shell, the distance between the circuit board and the measured medium is increased, the acquisition of heat energy is reduced, and the product size is also reduced, making it convenient to use. At the same time, the inner cavity of the main body shell is filled with heat insulation material to hinder the transfer of heat energy, thereby better protecting the circuit board and increasing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0013] Figure 1 is a front view structural schematic diagram of the overall high-temperature resistant temperature transmitter of the present utility model;

[0014] Figure 2 For the present utility model Figure 1 is a schematic enlarged view of A in;

[0015] Figure 3 For the present utility model Figure 1 is a schematic enlarged view of B in.

[0016] The reference numerals in the drawings are described separately as follows: 10, main body shell; 11, closing nut; 12, hollow tube; 13, process connection thread; 14, protection tube; 15, circuit board; 16, aviation plug; 17, heat insulation material; 18, thermal resistor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The present utility model will now be further described in detail in conjunction with the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, and therefore only showing the components related to the present utility model.

[0018] The following will be combined with Figures 1-3 to describe the present utility model in detail. Among them, for the convenience of narration, the following directions are defined as follows: The up, down, left, right, front, and back directions mentioned below are the same as the front, back, left, right, up, and down directions of the Figure 1 viewing direction, Figure 1 is the front view of the device of the present utility model, Figure 1 The direction shown is the same as the front, back, left, right, up, and down directions of the front view direction of the device of the present utility model.

[0019] The following will be further described in detail for the embodiments of the present utility model in conjunction with the drawings:

[0020] Please refer to Figures 1-3, an embodiment provided by the present utility model: a high-temperature resistant temperature transmitter, including a main body shell 10. A circuit board 15 is horizontally arranged at the top of the inner cavity of the main body shell 10. The circuit board 15 is adjacent to the top of the inner cavity of the main body shell 10. A closing nut 11 is fixedly installed at the bottom of the main body shell 10 through threads. The closing nut 11 fixedly installs a hollow tube 12. A process connection thread 13 is fixedly arranged on the hollow tube 12. The process connection thread 13 is connected to a protection tube 14. A thermal resistor 18 is arranged at the bottom of the inner cavity. The thermal resistor 18 is connected to the circuit board 15 through a wire. An insulating material 17 is arranged in the inner cavity of the main body shell 10. The insulating material 17 fills the entire chamber. The insulating material 17 can be a solid insulating material or a colloidal insulating material.

[0021] In addition, in one embodiment, an aviation plug 16 is fixedly arranged at the top of the main body shell 10. The aviation plug 16 is connected to the circuit board 15 through a connector.

[0022] In addition, in one embodiment, the insulating material 17 is insulating glue, porous material, or polystyrene board insulation layer.

[0023] In addition, in one embodiment, a certain amount of thermal conductive silicone grease is poured between the thermal resistor 18 and the inner cavity wall surface of the protection tube 14.

[0024] During specific implementation: Connect the process connection thread 13 to the device to be detected. Rotate the product to drive the process connection thread 13 to rotate, so as to be tightly connected to the device. At this time, the medium to be measured contacts the position where the thermal resistor 18 is located at the bottom of the protection tube 14. Heat is transferred to the thermal resistor 18 through the protection tube 14 and the thermal conductive silicone grease, and then a signal is obtained. Subsequently, the signal is transmitted to the circuit board 15, and then the signal is transmitted out through the aviation plug 16;

[0025] During this process, since the medium to be measured will generate a large amount of heat energy, the heat energy will affect the circuit board 15 through the transmission of parts such as the protection tube 14, and will damage the circuit board 15 and make it unable to be used continuously. In this device, the circuit board 15 is horizontally placed at the top of the inner cavity of the main body shell 10, increasing the distance between the circuit board 15 and the medium to be measured, reducing the acquisition of heat energy, and also making the product size smaller and more convenient to use. At the same time, the inner cavity of the main body shell 10 is filled with the insulating material 17 to block the transmission of heat energy, thereby better protecting the circuit board 15 and increasing the service life.

[0026] It should be emphasized that the embodiments described in the present utility model are illustrative rather than restrictive. Therefore, the present utility model is not limited to the embodiments described in the specific implementation manners. Any other implementation manners obtained by those skilled in the art according to the technical solutions of the present utility model also belong to the scope protected by the present utility model.

Claims

1. A high temperature resistant temperature transmitter, comprising a main body shell (10), characterized in that: A circuit board (15) is horizontally arranged at the top of the inner cavity of the main body shell (10), and the circuit board (15) is adjacent to the top of the inner cavity of the main body shell (10). A closed nut (11) is fixedly installed at the bottom of the main body shell (10) through a thread, and the closed nut (11) is fixedly installed with a hollow tube (12). A process connection thread (13) is fixedly arranged on the hollow tube (12), and the process connection thread (13) is connected to the protective tube (14). A thermal resistor (18) is arranged at the bottom of the inner cavity, and the thermal resistor (18) is connected to the circuit board (15) through a wire. A heat insulation material (17) is arranged in the inner cavity of the main body shell (10), and the heat insulation material (17) fills the entire cavity. The heat insulation material (17) is a solid heat insulation material or a gelatinous heat insulation material.

2. A high temperature resistant temperature transmitter according to claim 1, characterized in that: An aviation plug (16) is fixedly provided on the top of the main body shell (10), and the aviation plug (16) is connected to the circuit board (15) via a connector.

3. A high temperature resistant temperature transmitter according to claim 1, characterized in that: The heat insulating material (17) is heat insulating glue, porous material or a polystyrene board heat insulating layer.

4. A high temperature resistant temperature transmitter according to claim 1, characterized in that: A certain amount of thermal conductive silicone grease is poured between the thermal resistor (18) and the inner wall surface of the protection tube (14).

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