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Novel non-welding thermoelectric couple (resistor)

A technology of thermal resistance and thermocouple, which is applied in the direction of directly heat-sensitive electric/magnetic element thermometers, measuring heat, and using electric devices, etc., can solve the problem of reducing manufacturing production costs, increasing manufacturing production costs, and large amount of material usage and other issues, to achieve the effects of reducing manufacturing production costs, saving resources, and improving safety performance

Active Publication Date: 2012-08-08
杭州亿泰自控设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention mainly solves the problem that the original thermocouple (resistance) flange and the protective sleeve adopt a welded connection structure, which requires a large amount of high-cost materials, and when the protective sleeve needs to be replaced, the flange and the protective sleeve cannot be disassembled. , can only be replaced together, which not only increases the manufacturing cost, but also wastes a lot of resources. A kind of non-welding thermocouple or thermal resistance is provided, which makes the disassembly and assembly between the flange and the protective sleeve very convenient, because no welding is used In this way, the flange can be made of materials different from the protective sleeve, and lower-cost materials can be used, which greatly reduces the manufacturing cost, and when the protective sleeve needs to be replaced, there is no need to replace the flange, which saves a lot of resources
[0004] Another object of the present invention is to provide a non-welded thermocouple or thermal resistance, which eliminates the weld structure caused by the welding process and the grain size of the heat-affected area is coarse or uneven, and the residual stress caused by the high hardness of the weld is eliminated. The quality problem solves the problem of cracking due to the inability to resist acid gas corrosion and hydrogen corrosion in the welding area, which not only improves the rigidity and strength of the protective sleeve, but also improves the performance of temperature resistance and corrosion resistance.
[0005] The invention also solves the sealing problem of the flange and the protective sleeve after adopting a non-welding connection structure; it provides a non-welding thermocouple or thermal resistance, which has multiple leak-stopping functions. Even if the protective sleeve is cracked or broken, the measured medium will not leak out, achieving the effect of shock resistance and leak plugging, with high safety performance

Method used

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  • Novel non-welding thermoelectric couple (resistor)
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  • Novel non-welding thermoelectric couple (resistor)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: a kind of non-welded thermocouple or thermal resistance of this embodiment, such as figure 1 As shown, it includes a temperature-sensing element 3 that extends into the blind hole 23 of the protective sleeve 1 and is close to the bottom of the blind hole, and the other end is connected to the junction box 2. The protective sleeve 1 is installed on the flange 4 , The temperature sensing element 3 between the junction box 2 and the flange 4 is covered with a support tube. The temperature sensing element 3 adopts an armored element. The center of the flange 4 has a protective sleeve installation hole 5 that runs through the flange, such as Figure 4 As shown, the protective sleeve installation hole 5 is formed by connecting a counterbore, a tapered hole and a cylindrical hole, and the counterbore is located on the lower plane of the flange 4 . There is a raised disk 6 on the outer wall of the protective sleeve 1, the raised disk is close to the opening end ...

Embodiment 2

[0027] Embodiment 2: a kind of non-welded thermocouple or thermal resistance of this embodiment, such as Figure 5 As shown, the support pipe includes an upper support pipe 18 and a lower support pipe 19, and the upper support pipe 18 and the lower support pipe 19 are connected through an up and down adjustable joint 20. The up and down adjustable joint 20 has an upper internal thread 21 and a lower internal thread 22 arranged in opposite directions. The external threads of the upper support pipe 18 and the external threads of the lower support pipe 19 are arranged in the opposite direction, the upper internal thread 21 of the up and down adjustable active joint 20 matches the external thread of the upper support pipe 18, and the lower internal thread of the up and down adjustable active joint 20 The thread 22 matches the external thread of the lower support pipe 19 . There is a boss 12 at the lower end of the lower support tube 19, and the boss 12 and the opening end of the ...

Embodiment 3

[0029] Embodiment 3: a kind of non-welded thermocouple or thermal resistance of this embodiment, such as image 3 , Figure 4 As shown, there is a long groove 15 set from the bottom of the cone to the top of the hole on the wall of the tapered hole 5 of the protective sleeve mounting hole 5 on the flange 4, and there is a hemispherical groove 15 on the positioning conical slope 14 of the protective sleeve 1. Groove 16, the position of hemispherical groove 16 and long groove 15 is corresponding, and positioning ball 17 is housed in the cavity that hemispherical groove 16 and long groove 15 surround. The length of the blind hole 23 in the protective sleeve is 1000 mm, and the concentricity deviation of the blind hole 23 is 0.45 mm, and the rest are the same as in the second embodiment.

[0030] Since the positioning ball is stuck in both the hemispherical groove and the long groove, the relative position of the flange and the protective sleeve is fixed during assembly, which ef...

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PUM

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Abstract

The invention relates to a novel non-welding thermoelectric couple (resistor). The thermoelectric couple (resistor) comprises a flange and a temperature sensing element, wherein one end of the temperature sensing element extends into a blind hole of a protective sleeve, while the other end is connected with a junction box; a supporting pipe is sleeved on the temperature sensing element between the junction box and the flange; the center of the flange is provided with a protective sleeve mounting hole; the outer wall of the protective sleeve is provided with a convex disk; the opening end of the protective sleeve passes through the protective sleeve mounting hole from the lower surface of the flange and is exposed out of the upper plane of the flange; the lower planes of the convex disk and the flange are butted, and the supporting pipe and the opening end of the protective sleeve are butted; the connecting part of the supporting pipe and the opening end of the protective sleeve is provided with a splicing nut; a plugging and pressing nut is arranged between the supporting pipe and the splicing nut; and the opening end of the protective sleeve is provided with double plugging clamping bushes. In the invention, because a non-welding connecting structure is adopted to the flange and the protective sleeve, the flange and the protective sleeve are convenient to disassemble and assemble, and when the protective sleeve is needed to be changed, the flange is not needed to be changed, thereby a large quantity of resources are saved; and the flange is made of a material with a lowercost, thereby the manufacturing cost is greatly reduced.

Description

technical field [0001] The invention relates to a thermocouple or thermal resistance, in particular to a non-welding thermocouple or thermal resistance which is convenient for disassembly between a protective sleeve and a flange, thereby reducing costs. Background technique [0002] In important industrial production processes such as petroleum, chemical industry, metallurgy, and electric power, measuring temperature with thermocouples (resistance) is the most common method and means of contact temperature sensors. Especially in the chemical production process that uses petroleum and coal as raw materials, it is not only widely used, but also used in a huge amount. Especially for the processing of high-sulfur and high-acid crude oil, due to the continuous change of chemical composition, the temperature measurement requirements are getting higher and higher, and the temperature measurement environment is getting worse and worse. The thermocouple (resistance) of the contact t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01K7/02G01K7/16G01K1/08
Inventor 丁锡端
Owner 杭州亿泰自控设备有限公司