Vibration-resistant armored thermal resistor

Abstract

The utility model provides a kind of anti-vibration armored thermal resistance, including temperature sensing element, lead, sleeve and terminal box;Temperature sensing element one end and lead one end connection, lead other end and terminal box connection, the outside of lead is equipped with elastic pipe, outside between temperature sensing element and lead is also equipped with tower spring, the top end of tower spring and the bottom end of elastic pipe abut, temperature sensing element, lead, elastic pipe and tower spring are all arranged in the inside of sleeve, elastic pipe and tower spring and the inner wall of sleeve are close, terminal box and the top end of sleeve are fixed by screw thread connection, the top of sleeve has flange.Advantage: by the outside of lead and temperature sensing element is equipped with carbon nanotube and tower spring, utilize the capacity of carbon nanotube absorption vibration, and the elastic buffer of tower spring, make temperature sensing element not occur in sleeve Inclination and reduce vibration, avoid the fracture of lead to occur, reduce the vibration amplitude of temperature sensing element, and then reduce the intensity of friction, to prolong service life.

Description

Technical Field

[0001] This utility model relates to the field of temperature detection equipment, specifically to a vibration-resistant armored resistance temperature detector. Background Technology

[0002] A sheathed resistance temperature detector (RTD) is a temperature sensor that measures temperature by utilizing the characteristic that the resistance of a material changes with temperature. It is widely used in measurement systems during industrial production processes.

[0003] In process production equipment with large vibrations, the temperature sensing element (resistance element) of a conventional armored resistance temperature detector (RTD) will wear down due to vibration during long-term operation. At the same time, the leads of the RTD may break due to vibration, which seriously affects the normal measurement and service life of the RTD. Utility Model Content

[0004] The purpose of this invention is to provide a vibration-resistant armored thermal resistor.

[0005] This utility model is implemented by the following technical solution: An anti-vibration armored resistance temperature detector (RTD) includes a temperature sensing element, a lead wire, a sleeve, and a junction box. One end of the temperature sensing element is connected to one end of the lead wire, and the other end of the lead wire is connected to the junction box. An elastic tube is sleeved on the outside of the lead wire, and a tower spring is sleeved on the outside between the temperature sensing element and the lead wire. The top end of the tower spring abuts against the bottom end of the elastic tube. The temperature sensing element, lead wire, elastic tube, and tower spring are all inserted inside the sleeve. The elastic tube and tower spring are in close contact with the inner wall of the sleeve. The junction box is threadedly connected to the top end of the sleeve, and the top of the sleeve has a flange.

[0006] Preferably, the sleeve is made of stainless steel.

[0007] Preferably, the elastic tube is a carbon nanotube.

[0008] Preferably, the lower half of the tower spring is entirely wrapped around the outside of the temperature sensing element, and the upper half of the tower spring is funnel-shaped and wrapped around the outside of the lead wire.

[0009] The advantages of this invention are: by wrapping carbon nanotubes and tower springs around the lead wire and the temperature sensing element, the ability of carbon nanotubes to absorb vibration and the elastic buffering of the tower springs are utilized to prevent the temperature sensing element from tilting and reduce vibration within the sleeve, thus avoiding lead wire breakage, reducing the vibration amplitude of the temperature sensing element, and consequently reducing friction, thereby extending its service life. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 yes Figure 1Enlarged view of point A in the middle.

[0011] In the diagram: 1. Temperature sensing element, 2. Lead wire, 3. Sleeve, 4. Junction box, 5. Flexible tube, 6. Tower spring. Detailed Implementation

[0012] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0013] like Figures 1 to 2 As shown, a vibration-resistant armored resistance temperature detector includes a temperature sensing element 1, a lead wire 2, a sleeve 3, a junction box 4, an elastic tube 5, and a tower spring 6. One end of the temperature sensing element 1 is connected to one end of the lead wire 2, and the other end of the lead wire 2 is connected to the junction box 4. An elastic tube 5, made of carbon nanotubes, is sleeved on the outside of the lead wire 2. The good strength and elasticity of the carbon nanotubes reduce and absorb vibrations, thus reducing the impact of vibrations on the lead wire 2 and improving its vibration resistance. A tower spring 6 is also sleeved on the outside between the temperature sensing element 1 and the lead wire 2. The lower half of the tower spring 6 completely surrounds the outside of the temperature sensing element 1, and the upper half of the tower spring 6 is funnel-shaped and surrounds the outside of the lead wire 2. The top of the tower spring 6 abuts against the bottom of the elastic tube 5. The temperature sensing element 1, the lead wire 2, the elastic tube 5, and the tower spring 6 are all inserted inside the sleeve 3, and the elastic tube 5 and the tower spring 6 are in close contact with the inner wall of the sleeve 3. Through the synergistic effect of the carbon nanotubes and the tower spring 6, the temperature sensing element 1 will not tilt inside the sleeve 3, and vibration will be reduced, preventing the breakage of the lead wire 2, reducing the vibration amplitude of the temperature sensing element, and thus reducing the friction force, thereby extending its service life.

[0014] The junction box 4 and the sleeve 3 are fixed by threaded connection at the top. The sleeve 3 is made of stainless steel and has a flange at the top for easy installation and use.

[0015] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vibration-resistant armored resistance temperature detector (RTD), comprising a temperature sensing element (1), leads (2), a sheath (3), and a junction box (4); characterized in that, One end of the temperature sensing element (1) is connected to one end of the lead wire (2), and the other end of the lead wire (2) is connected to the junction box (4). An elastic tube (5) is sleeved on the outside of the lead wire (2). A tower spring (6) is also sleeved on the outside between the temperature sensing element (1) and the lead wire (2). The top end of the tower spring (6) abuts against the bottom end of the elastic tube (5). The temperature sensing element (1), the lead wire (2), the elastic tube (5) and the tower spring (6) are all inserted inside the sleeve (3). The elastic tube (5) and the tower spring (6) are in close contact with the inner wall of the sleeve (3). The junction box (4) and the top end of the sleeve (3) are threadedly connected and fixed. The top of the sleeve (3) has a flange.

2. The vibration-resistant armored resistance thermometer according to claim 1, characterized in that, The sleeve (3) is made of stainless steel.

3. The vibration-resistant armored thermal resistor according to claim 1, characterized in that, The elastic tube (5) is a carbon nanotube.

4. The vibration-resistant armored resistance thermometer according to claim 1, characterized in that, The lower half of the tower spring (6) is entirely wrapped around the outside of the temperature sensing element (1), and the upper half of the tower spring (6) is "funnel-shaped" and wrapped around the outside of the lead wire (2).

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