Thermocouple wear-resistant sleeve and wear-resistant thermocouple

Abstract

The utility model discloses a thermocouple wear-resistant sleeve and a wear-resistant thermocouple, the thermocouple wear-resistant sleeve comprises a wear-resistant sleeve rod, and the wear-resistant sleeve rod is sleeved on a sleeve of the thermocouple; an opening is formed in the upper end of the wear-resisting sleeve rod, a locking part is arranged at the upper end of the wear-resisting sleeve rod, and the wear-resisting sleeve rod is installed on the sleeve in a pressing mode after being matched with the locking part through a fixing piece; and a temperature transfer part is arranged at the lower part of the wear-resistant sleeve rod. The wear resistance of the thermocouple is improved through the wear-resistant sleeve, and the service life of the thermocouple is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of thermocouples, in particular to a thermocouple wear-resistant sleeve and a wear-resistant thermocouple. Background Art

[0002] Thermocouples are commonly used temperature measuring elements, used to obtain the temperature of the medium. When in use, the medium continuously contacts the temperature measuring part of the thermocouple. During the contact process, the temperature measuring part will be rubbed. If the friction lasts too long or the friction protection is improper, the service life of the thermocouple will be shortened.

[0003] After searching, it was found that the utility model with patent number 202120331068.3 discloses a fire channel thermocouple, including a junction box, a thermocouple core and a thermocouple sleeve, wherein the thermocouple core is arranged in the thermocouple sleeve, one end of the thermocouple sleeve is connected to the junction box, and the other end of the thermocouple sleeve is provided with a measuring seat, the thermocouple sleeve and the measuring seat are an integrally formed blind hole structure, and the wall thickness of the thermocouple sleeve is 6 to 8 mm. However, the thermocouple disclosed in the utility model has a short service life, especially the sleeve part, which has not undergone any wear-resistant treatment and is very easy to be damaged, reducing the service life. Utility Model Content

[0004] Therefore, in order to solve the above-mentioned shortcomings, the utility model provides a thermocouple wear-resistant sleeve and a wear-resistant thermocouple, and the wear resistance of the thermocouple is improved by the wear-resistant sleeve, thereby increasing the service life of the thermocouple.

[0005] On the one hand, the utility model provides a thermocouple wear-resistant sleeve, comprising a wear-resistant sleeve rod, wherein the wear-resistant sleeve rod is sleeved on a sleeve of the thermocouple;

[0006] The upper end of the wear-resistant sleeve is open and provided with a locking portion, and the wear-resistant sleeve is installed on the sleeve by pressing after the fixing piece cooperates with the locking portion;

[0007] A temperature transfer portion is arranged at the lower part of the wear-resistant sleeve rod.

[0008] Optionally, the locking portion is a threaded portion provided on the upper portion of the wear-resistant sleeve rod, and the threaded portion is provided with an axial gap;

[0009] The fixing member is a nut adapted to the threaded portion.

[0010] Optionally, the temperature transfer portion includes a plurality of through grooves opened on the lower wall surface of the wear-resistant sleeve rod, and the plurality of through grooves are evenly arranged on the wear-resistant sleeve rod in a circumferential direction.

[0011] Optionally, the temperature transfer portion further includes a through hole opened at the bottom of the wear-resistant sleeve rod.

[0012] On the other hand, the utility model also provides a wear-resistant thermocouple, including a junction box, a thermocouple core and a sleeve, the thermocouple core is installed on the sleeve, the junction box is installed on the upper end of the sleeve, and the above-mentioned thermocouple wear-resistant sleeve is arranged on the periphery of the sleeve.

[0013] The utility model has the following advantages:

[0014] The utility model can reduce the friction of the medium on the thermocouple and increase the service life of the thermocouple by designing the wear-resistant sleeve rod, and makes the installation and disassembly of the wear-resistant sleeve rod more convenient by clamping the threaded part.

[0015] In order to reduce the influence of the wear-resistant sleeve rod on the temperature sensitivity of the thermocouple, a through groove or through hole is opened at the lower part and the bottom of the wear-resistant sleeve rod to form a temperature transfer part, and the medium contacts the thermocouple after passing through the temperature transfer part; this method can reduce the influence of the wear-resistant sleeve rod on the temperature sensitivity of the thermocouple, and can also block or reduce the amount of contact between the medium and the thermocouple, thereby increasing the service life of the thermocouple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the thermocouple wear-resistant sleeve of the utility model;

[0017] Figure 2 This is a schematic diagram of the thermocouple wear-resistant sleeve of the utility model in a disassembled state;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the thermocouple wear-resistant sleeve rod of the utility model;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the thermocouple wear-resistant sleeve rod of the utility model from another perspective;

[0020] Figure 5 This is a schematic diagram of a thermocouple with a wear-resistant sleeve installed;

[0021] In the figure: 100, wear-resistant sleeve rod; 101, temperature transfer part; 102, locking part; 1021, gap; 103, through hole; 200, fixing part; 300, thermocouple wear-resistant sleeve; 400, wear-resistant thermocouple. DETAILED DESCRIPTION

[0022] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0023] In this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0024] As described in the background technology, thermocouples are commonly used temperature measuring elements, which are used to obtain the temperature of the medium. When in use, the medium continuously contacts the temperature measuring part of the thermocouple. During the contact process, the temperature measuring part will be rubbed. If the friction lasts too long or the friction protection is improper, the service life of the thermocouple will be shortened.

[0025] Based on the above problems, this embodiment provides a thermocouple wear-resistant sleeve, including a wear-resistant sleeve rod 100, wherein the wear-resistant sleeve rod 100 is sleeved on the sleeve of the thermocouple;

[0026] The upper end of the wear-resistant sleeve rod is open and provided with a locking portion 102. The wear-resistant sleeve rod 100 is installed on the sleeve by pressing after the fixing piece 200 cooperates with the locking portion 102;

[0027] A temperature transfer portion 101 is provided at the lower portion of the wear-resistant sleeve rod.

[0028] Preferably, the locking portion is a threaded portion provided on the upper portion of the wear-resistant sleeve rod, and the threaded portion is provided with an axial gap 1021;

[0029] The fixing member is a nut adapted to the threaded portion.

[0030] The above technical features can reduce the friction of the medium on the thermocouple and increase the service life of the thermocouple by designing a wear-resistant sleeve rod. The wear-resistant sleeve rod is easy to install and disassemble and is fixed by a nut. The locking part is a threaded part opened on the upper part of the wear-resistant sleeve rod. The threaded part has an axial gap. The threaded part is squeezed by a nut installed on the threaded part to change the width of the gap, thereby installing the wear-resistant sleeve rod.

[0031] In order to reduce the influence of the wear-resistant sleeve rod on the temperature sensitivity of the thermocouple, in one embodiment, the temperature transfer portion 101 includes a plurality of through grooves opened on the lower wall of the wear-resistant sleeve rod 100, and the plurality of through grooves are evenly arranged circumferentially on the wear-resistant sleeve rod 100. Further, the temperature transfer portion also includes a through hole 103 opened at the bottom of the wear-resistant sleeve rod. Optionally, the wear-resistant sleeve rod can be made of the same material as the sleeve (without affecting the temperature sensitivity), and the wear resistance of the entire thermocouple can be improved by the wear-resistant sleeve rod.

[0032] In another embodiment, a wear-resistant thermocouple 400 is provided, including a junction box, a thermocouple core and a sleeve, wherein the thermocouple core is installed on the sleeve, the junction box is installed on the upper end of the sleeve, and the thermocouple wear-resistant sleeve 300 is arranged on the periphery of the sleeve.

[0033] In this embodiment, the wear resistance of the entire thermocouple is improved by the thermocouple wear-resistant sleeve, so that the service life of the thermocouple is longer.

[0034] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A thermocouple wear-resistant sleeve, characterized in that: It comprises a wear-resistant sleeve rod, and the wear-resistant sleeve rod is sleeved on the sleeve of the thermocouple; The upper end of the wear-resistant sleeve is open and provided with a locking portion, and the wear-resistant sleeve is installed on the sleeve by pressing after the fixing piece cooperates with the locking portion; A temperature transfer portion is arranged at the lower part of the wear-resistant sleeve rod.

2. A thermocouple wear-resistant sleeve according to claim 1, characterized in that: The locking portion is a threaded portion formed on the upper portion of the wear-resistant sleeve rod, and the threaded portion is provided with an axial gap; The fixing member is a nut adapted to the threaded portion.

3. A thermocouple wear-resistant sleeve according to claim 1, characterized in that: The temperature transfer portion comprises a plurality of through grooves formed on the lower wall surface of the wear-resistant sleeve rod, and the plurality of through grooves are evenly arranged on the wear-resistant sleeve rod in the circumferential direction.

4. A thermocouple wear-resistant sleeve according to claim 1, characterized in that: The temperature transfer portion also includes a through hole opened at the bottom of the wear-resistant sleeve rod.

5. A wear-resistant thermocouple, comprising a junction box, a thermocouple core and a sleeve, wherein the thermocouple core is mounted on the sleeve, and the junction box is mounted on the upper end of the sleeve, characterized in that: A thermocouple wear-resistant sleeve as claimed in any one of claims 1 to 4 is arranged on the periphery of the sleeve.

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