A multi-beam thermocouple packaging structure

Abstract

The utility model discloses a kind of multi-beam thermocouple packaging structures, belong to component packaging technical field.A kind of multi-beam thermocouple packaging structure, comprising: transition pipe and several thermocouples;Transition pipe includes installation end and connecting end;The position of the inner cavity of transition pipe close to installation end and connecting end is equipped with positioning sleeve and step flange respectively, and positioning sleeve and step flange between are equipped with filling layer;Thermocouple passes through the inner cavity of transition pipe and passes through positioning sleeve, filling layer and step flange.The thermocouple packaging of the utility model can realize multi-beam thermocouple simultaneous integrated packaging, when more point, it is unified from device and is led out, avoid the interference of structure.

Description

Technical Field

[0001] This utility model relates to the field of component packaging technology, specifically to a multi-beam thermocouple packaging structure. Background Technology

[0002] A certain special device needs to withstand both high temperature and high pressure, requiring operation from ambient temperature pressure ≤30MPa to high temperature (500℃) pressure ≤6.5MPa. It also needs to accurately measure the temperature of certain internal components and locations at multiple points, necessitating the connection of numerous thermocouples from the high-temperature, high-pressure cavity to monitoring equipment. Due to the overall structural limitations of the device, the measuring ends of the thermocouples can only be led out from one end after installation. However, this lead-out end is extremely compact with limited external space; multiple points or single-point leads would cause structural interference. Therefore, to meet the practical needs of similar devices, a structure that can uniformly encapsulate multiple temperature measuring elements (thermocouples) while ensuring the pressure resistance of this encapsulation structure at different temperatures is required. Utility Model Content

[0003] The purpose of this invention is to provide a multi-beam thermocouple encapsulation structure to solve the problem of structural interference caused by existing multi-point thermocouples being led out of the device individually.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A multi-beam thermocouple encapsulation structure includes: a transition tube and several thermocouples; the transition tube includes an installation end and a connection end; a positioning sleeve and a stepped flange are respectively provided in the inner cavity of the transition tube near the installation end and the connection end, and a filling layer is provided between the positioning sleeve and the stepped flange; the thermocouples pass through the inner cavity of the transition tube and through the positioning sleeve, the filling layer and the stepped flange.

[0006] Furthermore, a protective tube is fitted around the outside of the thermocouple. One end of the protective tube passes through the stepped flange and extends into the filling layer, while the other end of the protective tube extends to the end of the thermocouple near the mounting end.

[0007] Furthermore, an intermediate pipe is provided on the outside of the section of the aforementioned protective pipe that passes through the stepped flange.

[0008] Furthermore, the protective tube has an enlarged diameter section at one end outside the transition tube, a brazing layer inside the enlarged diameter section, and a pagoda-shaped spring at the port of the enlarged diameter section.

[0009] Furthermore, the side wall of the aforementioned transition pipe is provided with a potting connection pipe and a vent hole, and both the port of the potting connection pipe and the vent hole are provided with sealing elements.

[0010] Furthermore, the aforementioned transition tube is trumpet-shaped, with the smaller opening end being the installation end and the larger opening end being the connection end. The potting connection tube and vent hole are located near the connection end.

[0011] Furthermore, the aforementioned installation end is equipped with a heat insulation sealing plate.

[0012] Furthermore, the side of the aforementioned heat insulation sealing plate away from the transition pipe is provided with a silver plating layer.

[0013] Furthermore, the filler layer is made of inorganic high-temperature adhesive.

[0014] This utility model has the following beneficial effects:

[0015] (1) The thermocouple encapsulation of this utility model can realize the simultaneous integration and encapsulation of multiple thermocouples. When there are many points, they can be led out from the device in a unified manner to avoid structural interference.

[0016] (2) The thermocouple encapsulation of this utility model adopts a three-layer encapsulation structure, which improves the high temperature and high pressure sealing effect of the thermocouple encapsulation structure, and the multi-layer structure reduces the temperature of the upper structure.

[0017] (3) The present invention fills the transition tube with inorganic high-temperature adhesive, which reduces the pressure of thermocouple protection tube and brazing weld. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the multi-beam thermocouple packaging structure provided in an embodiment of the present utility model;

[0019] Figure 2 for Figure 1 Enlarged view of part A;

[0020] Figure 3 for Figure 1 Enlarged view of part B;

[0021] Figure 4 for Figure 1 Enlarged view of part C.

[0022] In the diagram: 10-Transition pipe; 11-Mounting end; 12-Connecting end; 13-Potting connection pipe; 14-Ventilation hole; 15-Seal; 16-Insulation sealing plate; 20-Thermocouple; 21-Protective pipe; 22-Intermediate pipe; 23-Expanded diameter section; 24-Bratter layer; 25-Pagoda-shaped spring; 30-Positioning sleeve; 40-Stepped flange; 50-Filling layer. Detailed Implementation

[0023] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0024] like Figures 1 to 4 As shown, this embodiment provides a multi-beam thermocouple encapsulation structure, including: a transition tube 10 and a plurality of thermocouples 20. All thermocouples 20 pass through the transition tube 10, and all thermocouples 20 are encapsulated within the transition tube 10. The transition tube 10 includes a mounting end 11 and a connecting end 12. The mounting end 11 is used to connect to the housing of the device to be measured. The transition tube 10 is flared, with the smaller opening end being the mounting end 11 and the larger opening end being the connecting end 12. This arrangement ensures that the mounting end 11 only occupies a small portion of the housing, while the connecting end 12 allows all thermocouples 20 to be distributed. The encapsulation structure of this utility model can realize the simultaneous integrated encapsulation of multiple thermocouples. When there are many points, they can be uniformly led out from the device, avoiding structural interference.

[0025] The inner cavity of the transition pipe 10 is provided with a positioning sleeve 30 and a stepped flange 40. The positioning sleeve 30 is close to the mounting end 11, and the stepped flange 40 is welded to the connecting end 12. A filling layer 50 is provided in the area between the positioning sleeve 30 and the stepped flange 40. The mounting end 11 of the transition pipe 10 is provided with a heat insulation sealing plate 16, and a silver-plated layer is provided on the side of the heat insulation sealing plate 16 away from the transition pipe 10. Thermocouple 20 passes through the inner cavity of the transition pipe 10 and through the heat insulation sealing plate 16, the positioning sleeve 30, the filling layer 50, and the stepped flange 40.

[0026] To facilitate the formation of the filler layer 50, in this embodiment, the transition pipe 10 is provided with a potting connection pipe 13 and a vent hole 14 on the side wall near the mounting end 11. Both the port of the potting connection pipe 13 and the vent hole 14 are provided with sealing elements 15. When forming the filler layer 50, the potting connection pipe 13 and the vent hole 14 are opened, and the filler is injected from the potting connection pipe 13 into the transition pipe 10. During the injection process, the vent hole 14 is used to vent air until the filler fills the area between the positioning sleeve 30 and the stepped flange 40. After cooling, the filler layer 50 is formed. Finally, the port of the potting connection pipe 13 and the vent hole 14 are sealed by the sealing elements 15.

[0027] Preferably, the filler is an inorganic high-temperature adhesive.

[0028] A protective tube 21 is fitted on the outside of the thermocouple 20. The protective tube 21 passes through the stepped flange 40, so that one end of the protective tube 21 is located inside the transition tube 10 and the other end is located outside the transition tube 10. Specifically, one end of the protective tube 21 is located inside the filling layer 50 and the other end extends to the end of the thermocouple 20 near the mounting end 11.

[0029] In this embodiment, an intermediate tube 22 is provided on the outer side of one end of the thermocouple 20 that passes through the stepped flange 40, and an enlarged diameter section 23 is provided on the outer side of the thermocouple 20 located outside the transition tube 10. A brazing layer 24 is provided inside the enlarged diameter section 23, and a pagoda-shaped spring 25 is provided at the port of the enlarged diameter section 23. The larger diameter end of the pagoda-shaped spring 25 is connected to the brazing layer 24, that is, the pagoda-shaped spring 25 is fixedly connected to the enlarged diameter section 23 by brazing.

[0030] 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 multi-beam thermocouple packaging structure, characterized in that, include: A transition tube (10) and several thermocouples (20); the transition tube (10) includes an installation end (11) and a connection end (12); the inner cavity of the transition tube (10) is provided with a positioning sleeve (30) and a stepped flange (40) near the installation end (11) and the connection end (12), respectively, and a filling layer (50) is provided between the positioning sleeve (30) and the stepped flange (40); the thermocouples (20) pass through the inner cavity of the transition tube (10) and pass through the positioning sleeve (30), the filling layer (50) and the stepped flange (40).

2. The multi-beam thermocouple packaging structure according to claim 1, characterized in that, The thermocouple (20) is fitted with a protective tube (21) on its outer side. One end of the protective tube (21) passes through the stepped flange (40) and extends into the filling layer (50). The other end of the protective tube (21) extends to the end of the thermocouple (20) near the mounting end (11).

3. The multi-beam thermocouple packaging structure according to claim 2, characterized in that, The protective pipe (21) has an intermediate pipe (22) on the outside of a section passing through the stepped flange (40).

4. The multi-beam thermocouple packaging structure according to claim 2, characterized in that, The protective tube (21) has an enlarged diameter section (23) at one end outside the transition tube (10), and a brazing layer (24) is provided inside the enlarged diameter section (23). A pagoda-shaped spring (25) is provided at the port of the enlarged diameter section (23).

5. The multi-beam thermocouple packaging structure according to claim 1, characterized in that, The side wall of the transition tube (10) is provided with a potting connection tube (13) and a vent hole (14), and both the port of the potting connection tube (13) and the vent hole (14) are provided with a sealing element (15).

6. The multi-beam thermocouple packaging structure according to claim 5, characterized in that, The transition tube (10) is trumpet-shaped, with the smaller opening end being the mounting end (11) and the larger opening end being the connecting end (12). The potting connecting tube (13) and the vent (14) are located near the connecting end (12).

7. The multi-beam thermocouple packaging structure according to claim 1, characterized in that, The mounting end (11) is provided with a heat insulation sealing plate (16).

8. The multi-beam thermocouple packaging structure according to claim 7, characterized in that, The heat insulation sealing plate (16) has a silver plating layer on the side away from the transition pipe (10).

9. The multi-beam thermocouple packaging structure according to claim 1, characterized in that, The filler layer (50) is made of inorganic high-temperature adhesive.

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