CN210293478U

CN210293478U - Spring pressure seat type thermocouple

Info

Publication number: CN210293478U
Application number: CN201921151819.2U
Authority: CN
Inventors: 罗贤
Original assignee: Chongqing Dyon Instrument Co ltd
Current assignee: Chongqing Dyon Instrument Co ltd
Priority date: 2019-07-22
Filing date: 2019-07-22
Publication date: 2020-04-10
Anticipated expiration: 2029-07-22

Abstract

The utility model provides a seat formula thermocouple is pressed to spring, including explosion-proof terminal box (1), the lower extreme of this explosion-proof terminal box (1) passes through threaded connection pipe (2) and links to each other its characterized in that with outer protection tube (3): the explosion-proof junction box is characterized in that a wire holder (4) is arranged in the explosion-proof junction box (1), the lower end of the wire holder (4) is connected with a thermocouple core (6) through a spring pressing seat (5), the spring pressing seat (5) is located in the threaded connecting pipe (2), the thermocouple core (6) is inserted into the outer protection pipe (3), and a certain telescopic space is reserved between the lower end of the thermocouple core (6) and the bottom of the outer protection pipe (3). The effect is as follows: the thermocouple core inside is installed by adopting the spring pressing seat in the thermocouple, so that a good shockproof and damping effect can be achieved, the service life of the thermocouple core is prolonged, and meanwhile, the thermocouple is simple in structure and convenient to install.

Description

Spring pressure seat type thermocouple

Technical Field

The utility model relates to a temperature-detecting device, specifically speaking are spring pressure seat formula thermocouple.

Background

The thermocouple is a commonly used temperature measuring element in a temperature measuring instrument, directly measures temperature, converts a temperature signal into a resistance signal, and converts the resistance signal into the temperature of a measured medium through an electric instrument (a secondary instrument). The appearance of each thermal resistor is different greatly according to needs, but the basic structures of the thermal resistors are approximately the same, and the thermal resistors are generally composed of main parts such as protective sleeves, insulating substances, resistor bodies and the like and are generally matched with display instruments, recording instruments and electronic regulators for use.

The existing thermocouple usually fixes a thermocouple core at the lower end of an explosion-proof junction box directly, such as the thermocouple disclosed in Chinese patent 201821210082.2, has the defects of poor shock resistance, and the service life of the thermocouple is influenced because the connection part of the thermocouple core and a wire holder is broken due to the vibration of equipment in the using process.

SUMMERY OF THE UTILITY MODEL

To the above problem, the utility model provides a spring presses seat formula thermocouple, the mounting means of thermocouple core is improved to promote the shock resistance of thermocouple.

In order to achieve the above object, the present invention adopts the following specific technical solutions:

the utility model provides a seat formula thermocouple is pressed to spring, includes explosion-proof terminal box (1), and the lower extreme of this explosion-proof terminal box (1) passes through threaded connection pipe (2) and links to each other with outer protection tube (3), and its key lies in: the explosion-proof junction box is characterized in that a wire holder (4) is arranged in the explosion-proof junction box (1), the lower end of the wire holder (4) is connected with a thermocouple core (6) through a spring pressing seat (5), the spring pressing seat (5) is located in the threaded connecting pipe (2), the thermocouple core (6) is inserted into the outer protection pipe (3), and a certain telescopic space is reserved between the lower end of the thermocouple core (6) and the bottom of the outer protection pipe (3).

Optionally, the length of the telescopic space is 5-10 mm, so that the couple core (6) is ensured to have a sufficient telescopic space.

Optionally, a plurality of binding posts (41) are arranged at the upper end of the wire holder (4), and the signal connection wires led out from the upper end of the thermocouple core (6) penetrate through the spring pressing seat (5) and are respectively electrically connected with the corresponding binding posts (41).

Optionally, the wire holder (4) comprises a mounting plate (42) for arranging the plurality of wiring terminals (41), and a connecting pipe (43) connected to the lower end of the mounting plate (42), the lower end of the connecting pipe (43) is fixed to the spring pressing seat (5), the lumen of the connecting pipe (43) is communicated with the inner cavity of the spring pressing seat (5), and a threading hole communicated with the lumen of the connecting pipe (43) is formed in the mounting plate (42).

By adopting the wiring seat, the installation and fixation of the couple core are facilitated, the wiring is facilitated, and meanwhile, the explosion-proof and shock-proof effects are also enhanced.

Optionally, the lower end of the threaded connecting pipe (2) is sleeved on the outer protection pipe (3) and sealed by welding.

Optionally, a fixing clamping sleeve thread (7) is arranged on the outer tube wall in the middle of the outer protection tube (3).

The utility model discloses a show the effect and be:

the thermocouple core inside is installed by adopting the spring pressing seat in the thermocouple, so that a good shockproof and damping effect can be achieved, the service life of the thermocouple core is prolonged, and meanwhile, the thermocouple is simple in structure and convenient to install.

Drawings

Fig. 1 is a schematic view of the installation structure of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the present invention;

fig. 4 is a connection diagram of the wire holder of the present invention.

The figure is marked with 1-explosion-proof junction box, 2-thread connecting pipe, 3-outer protection pipe, 4-wire holder, 5-spring pressing seat, 6-thermocouple core, 7-fixed cutting sleeve thread, 41-wiring terminal, 42-mounting plate and 43-connecting pipe

Detailed Description

In order to make the technical problems, technical solutions and technical effects of the present invention more clear, the following detailed description will be given with reference to the accompanying drawings and specific embodiments. In the drawings, elements or portions are not necessarily drawn to scale.

As shown in fig. 1 and 2, the present embodiment provides a spring pressing seat type thermocouple, which includes an explosion-proof terminal box 1, a lower end of the explosion-proof terminal box 1 is connected to an outer protection tube 3 through a threaded connection tube 2, a wire holder 4 is disposed in the explosion-proof terminal box 1, a lower end of the wire holder 4 is connected to a thermocouple core 6 through a spring pressing seat 5, the spring pressing seat 5 is located in the threaded connection tube 2, the thermocouple core 6 is inserted into the outer protection tube 3, a telescopic space with a length of 5-10 mm is reserved between a lower end of the thermocouple core 6 and a tube bottom of the outer protection tube 3, and a fixing clamping sleeve thread 7 is disposed on an outer tube wall at the middle portion of the outer protection tube 3 for convenience of installation.

As can be seen from fig. 2, in this embodiment, the upper end of the threaded connection pipe 2 is in threaded connection with the lower end connection port of the explosion-proof junction box 1, and the outer protection pipe 3 is sleeved at the lower end of the threaded connection pipe 2 and is sealed by welding, so that not only is the connection stability ensured, but also the waterproof grade can be achieved, and the use is safer and more reliable.

As can be seen from fig. 3 and 4, in order to facilitate the installation of the thermocouple core 6, a plurality of terminals 41, which are respectively a left terminal, a middle terminal and a right terminal, are disposed at the upper end of the connector base 4, and signal connection wires led out from the upper end of the thermocouple core 6 pass through the spring pressing base 5 and are respectively electrically connected with the corresponding terminals 41. In order to facilitate the fixation of the spring pressing seat 5, the wire holder 4 comprises a mounting plate 42 for arranging the plurality of wiring terminals 41 and a connecting pipe 43 connected to the lower end of the mounting plate 42, the lower end of the connecting pipe 43 is fixed to the spring pressing seat 5, a pipe cavity of the connecting pipe 43 is communicated with an inner cavity of the spring pressing seat 5, a threading hole communicated with the pipe cavity of the connecting pipe 43 is formed in the mounting plate 42, and the wiring is very convenient.

The utility model discloses a theory of operation is:

through setting up wire holder 4 and spring pressure seat 5, changed the mounting means of galvanic couple core 6, made it have certain free expansion space in outer protection tube 3 to promote the shock resistance shock-absorbing capacity of thermocouple, prolonged the life of equipment, it is also more convenient to wire simultaneously.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a seat formula thermocouple is pressed to spring, includes explosion-proof terminal box (1), and the lower extreme of this explosion-proof terminal box (1) passes through threaded connection pipe (2) and links to each other its characterized in that with outer protection tube (3): the explosion-proof junction box is characterized in that a wire holder (4) is arranged in the explosion-proof junction box (1), the lower end of the wire holder (4) is connected with a thermocouple core (6) through a spring pressing seat (5), the spring pressing seat (5) is located in the threaded connecting pipe (2), the thermocouple core (6) is inserted into the outer protection pipe (3), and a certain telescopic space is reserved between the lower end of the thermocouple core (6) and the bottom of the outer protection pipe (3).

2. The spring-loaded thermocouple of claim 1, wherein: the length of flexible space is 5 ~ 10 mm.

3. The spring-loaded thermocouple of claim 1, wherein: the upper end of the wire holder (4) is provided with a plurality of wiring terminals (41), and a signal connecting wire led out from the upper end of the thermocouple core (6) penetrates through the spring pressing seat (5) and is respectively and electrically connected with the corresponding wiring terminals (41).

4. The spring-loaded thermocouple of claim 3, wherein: the wire holder (4) is including being used for setting up mounting panel (42) of a plurality of terminals (41), and connect connecting pipe (43) of mounting panel (42) lower extreme the lower extreme of connecting pipe (43) is fixed seat (5) are pressed to the spring, the lumen of connecting pipe (43) with the inner chamber of seat (5) is pressed to the spring communicates with each other, just seted up on mounting panel (42) with the communicating through wires hole of connecting pipe (43) lumen.

5. The spring-loaded thermocouple of claim 1, wherein: the lower end of the threaded connecting pipe (2) is sleeved with the outer protection pipe (3) and sealed by welding.

6. The spring-loaded thermocouple of any one of claims 1 to 5, wherein: and a fixed clamping sleeve thread (7) is arranged on the outer pipe wall in the middle of the outer protection pipe (3).