CN219200654U - Spring-pressed surface thermocouple - Google Patents

Abstract

The utility model discloses a spring pressing type surface thermocouple, which comprises a junction box and a thermocouple body, wherein the junction box is provided with a connecting hole; the thermocouple body is provided with a protection tube; the temperature measuring end of the thermocouple body is connected with a spring pressing mechanism; the spring pressing mechanism comprises a threaded sleeve and an elastic piece; the thread sleeve is arranged on the periphery of the protective tube; the elastic piece is sleeved on the periphery of the protection tube and is positioned between the thread sleeve and the temperature measuring end. The utility model solves the problems that the vibration resistance can not be met and the screw connection tightness is poor in the thermocouple structure in the prior art.

Description

Spring Compression Surface Thermocouple

technical field

The utility model relates to the technical field of thermocouples, in particular to a spring pressing type surface thermocouple.

Background technique

The thermocouple device is assembled by ceramic bead or corundum insulated assembled temperature measuring element or magnesium oxide insulated armored temperature measuring element, outer protective sleeve, process side connecting device and wiring device, and the end of the temperature measuring element is placed in the In the measured medium, when there is a temperature difference between the measured medium and the cold end of the thermocouple, a potential difference will be generated at the two poles of the thermocouple. Check the corresponding thermocouple indexing table or connect a secondary control or indicating instrument to read the temperature of the measured medium or directly make a measurement. For control.

In order to improve the stability of the connection between the thermocouple and the measured object and the convenience of disassembly and assembly, various thermocouples with different installation methods have appeared. For example, Chinese published patent CN 112629692 A discloses a thermocouple fixing and sealing device composed of ferrules and threads, including a sleeve, a straight line, a ferrule, a nut, and a thermocouple protection tube. A through hole is arranged in the through hole along the axial direction, and the thermocouple protection tube can pass through the casing, the through hole, the ferrule and the nut in sequence. The end of the casing near the straight-through is provided with a casing external thread, and the end of the straight-through near the casing is provided with a straight-through internal thread matching the external thread of the casing, so that the casing and the straight-through can form a threaded connection. The other end of the straight-through is provided with a straight-through external thread, and the nut is provided with a nut internal thread matching the straight-through external thread, so that the nut and the straight-through can form a threaded connection. There is also a card slot in the end of the straight-through near the nut, and the ferrule can be embedded in the card slot under the connection and extrusion of the straight-through and the nut. It has the advantages of convenient disassembly and assembly of the thermocouple and good sealing performance.

It can be seen that in the prior art, in order to improve the convenience of disassembly and assembly, a combined connection method of thread and ferrule is designed, but in the thermocouple structure of the prior art, there are still problems of unsatisfactory anti-seismic performance and poor fastness of threaded connection.

Utility model content

The purpose of the utility model is to solve the problems of unsatisfactory anti-seismic performance and poor fastening of threaded connections in the thermocouple structure of the prior art, and provide a spring pressing type surface thermocouple.

The purpose of this utility model is achieved through the following technical solutions: a spring pressing type surface thermocouple, including a junction box and a thermocouple body; a protective tube is arranged on the thermocouple body; the temperature measurement of the thermocouple body The end is connected with a spring pressing mechanism; the spring pressing mechanism includes a threaded sleeve and an elastic member; the threaded sleeve is installed on the outer periphery of the protective tube; the elastic member is sleeved on the outer periphery of the protective tube and is located between the threaded sleeve and the temperature measuring end between;

Further, the elastic member is a spring;

Further, the outer diameter of the spring is smaller than the inner diameter of the threaded sleeve; the outer diameter of the spring is smaller than the inner diameter of the temperature measuring end;

Further, the threaded sleeve is also threaded with an adjusting nut;

Further, gaskets are respectively arranged at both ends of the spring;

A further technical solution is that the temperature measuring end of the thermocouple body includes a heat conductor.

The utility model has the following advantages:

1. The spring compression mechanism is connected to the temperature measurement end of the thermocouple body. When the temperature measurement end is installed on the surface of the object to be measured, the spring compression structure is beneficial to improve the fastness during installation and the shock resistance and cushioning performance;

2. The spring pressing mechanism includes a threaded sleeve and an elastic piece. Through the downward rotation of the threaded sleeve and the outer periphery of the protective tube, the elastic piece is squeezed, and the elastic piece undergoes compression deformation, which is beneficial to improve the tightness by virtue of the elastic restoring force of the elastic piece. Solidity; when the threaded sleeve is rotated upward, the elastic part recovers, which is conducive to quick removal; the elastic part is also conducive to shock resistance and buffering, and improves the stability of the structure.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural schematic diagram of the spring pressing mechanism.

Figure 3 is a schematic diagram of the installation of the spring.

In the figure: 1. Junction box; 2. Protective tube; 3. Spring pressing mechanism; 4. Thread sleeve; 5. Elastic part; 6. Adjusting nut; 7. Gasket;

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described The embodiments described above are some of the embodiments of the present utility model, but not all of them. The components of embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the implementation manners in the present utility model, all other implementation manners obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model.

It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the utility model product is used, or the orientation or positional relationship that is commonly understood by those skilled in the art, It is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless otherwise specified and limited, the terms "setting", "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection , can also be detachably connected, or integrally connected; can be mechanically connected, can also be electrically connected; can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

Embodiment 1: As shown in Figures 1 to 3, a spring pressing type surface thermocouple includes a junction box 1 and a thermocouple body; the thermocouple body is provided with a protective tube 2; the thermocouple body The temperature measuring end 8 is connected with a spring pressing mechanism 3; the spring pressing mechanism 3 includes a threaded sleeve 4 and an elastic member 5; the threaded sleeve 4 is installed on the outer periphery of the protective tube 2; the elastic member 5 is sleeved on the protective tube 2 outer circumference and located between the threaded sleeve 4 and the temperature measuring end 8; in this embodiment, the junction box 1 and the thermocouple body adopt a conventional structure, and any reasonable model structure and suitable connection and installation method can be selected according to needs; In the embodiment, the protective tube 2 is made of conventional materials with certain mechanical strength, and any reasonable material can be selected according to the needs; in this embodiment, the outer circumference of the threaded sleeve 4 is provided with threads, and it is installed to match the inner wall of the mounting seat. thread.

The spring compression mechanism is connected to the temperature measurement end 8 of the thermocouple body. When the temperature measurement end 8 is installed on the surface of the object to be measured, the spring compression structure is beneficial to improve the fastness during installation and the shock resistance buffer performance; the spring compression The locking mechanism 3 includes a threaded sleeve 4 and an elastic member 5. The elastic member 5 is squeezed by the threaded sleeve 4 and the outer circumference of the protective tube 2, and the elastic member 5 is compressed and deformed, which is beneficial to use the elasticity of the elastic member 5. The reset force improves fastness; when the threaded sleeve 4 is rotated upward, the elastic member 5 recovers, which is beneficial to quick removal; the elastic member 5 is also conducive to shock resistance and buffering, and improves the stability of the structure.

The elastic member 5 is a spring; the elastic member 5 adopts a conventional commercially available spring member with certain mechanical strength and elastic deformation force, and any reasonable spring can be selected according to needs, and the deformation of the spring is stable and easy to install.

The outer diameter of the spring is smaller than the inner diameter of the threaded sleeve 4; the outer diameter of the spring is smaller than the inner diameter of the temperature measuring end 8; in this embodiment, the outer diameter of the spring is smaller than the inner diameter of the threaded sleeve 4, which is conducive to the stable extrusion of the threaded sleeve 4 The spring, the outer diameter of the spring is smaller than the inner diameter of the heat conductor, which is beneficial to prevent the spring from protruding from the temperature measuring end 8.

The threaded sleeve 4 is also threadedly connected with an adjusting nut 6; in the present embodiment, the adjusting nut 6 threaded sleeve 4 is mounted on the threaded sleeve 4, and the adjusting nut 6 is screwed to a suitable position on the adjusting nut 6, which is conducive to adjustment and adjustment. The actual installation length of the fixed threaded sleeve 4. When assembling, install the base on the object to be measured in advance, insert the temperature measuring end 8 of the thermocouple into the installation base, screw the threaded sleeve 4 into the installation base, and the threaded sleeve is screwed with the installation base. After the installation is in place, the thread The sleeve 4 squeezes the spring, causing the spring to deform, improving the fastening effect and anti-seismic effect; the screw-in depth of the threaded sleeve 4 is adjusted by the adjusting nut 6 .

The two ends of the spring are respectively provided with gaskets 7; in this embodiment, the gaskets 7 are beneficial to improve the fastening effect, avoiding that the inner diameter of the gasket 7 is smaller than the outer diameter of the temperature measuring end 8 and the threaded sleeve 4 at the same time.

The temperature measuring end 8 of the thermocouple body includes a heat conductor; in this embodiment, the heat conductor is beneficial to improve the temperature measurement effect of the thermocouple body. In this embodiment, the heat conductor adopts conventional commercially available heat conduction materials; the lower end of the spring is in contact with the heat conductor, which is conducive to the stable contact of the heat conductor on the surface of the object to be tested.

Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features. Within the spirit and principles of the utility model, any modification, equivalent replacement, improvement, etc., should be included in the protection scope of the utility model.

Claims (6)

1. A spring-pressed surface thermocouple, comprising a junction box and a thermocouple body; it is characterized in that: the thermocouple body is provided with a protective tube; the temperature measuring end of the thermocouple body is connected with a spring crimping mechanism; the spring pressing mechanism includes a threaded sleeve and an elastic member; the threaded sleeve is installed on the outer periphery of the protection tube; the elastic member is sleeved on the outer periphery of the protective tube and is located between the threaded sleeve and the temperature measuring end. 2. The spring-pressed surface thermocouple according to claim 1, wherein the elastic member is a spring. 3. The spring-pressed surface thermocouple according to claim 2, characterized in that: the outer diameter of the spring is smaller than the inner diameter of the threaded sleeve; the outer diameter of the spring is smaller than the inner diameter of the temperature measuring end. 4 . The spring-pressed surface thermocouple according to claim 3 , wherein an adjusting nut is threadedly connected to the threaded sleeve. 5 . 5 . The spring-pressed surface thermocouple according to claim 3 , wherein gaskets are respectively arranged at both ends of the spring. 6 . 6. The spring-pressed surface thermocouple according to claim 1, characterized in that: the temperature measuring end of the thermocouple body includes a heat conductor.

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