High pressure resistant thermocouple wiring device

Abstract

The utility model relates to thermocouple wiring field relates to a kind of high-pressure-resistant thermocouple wiring device, the utility model includes: joint mounting seat, thermocouple adapter seat, positive pole terminal stud, negative pole terminal stud, O ring, pressing plate, insulating sleeve, lower wiring socket and upper wiring socket, the lower wiring socket is set in thermocouple adapter seat inside, the positive pole terminal stud is inserted with the negative pole terminal stud in insulating sleeve and is upwardly penetrated to the outside connection upper wiring socket, the positive pole terminal stud is connected with the lower end of negative pole terminal stud lower wiring socket, the O ring is located inside joint mounting seat and is respectively set on two groups of insulating sleeve, the insulating sleeve is located inside joint mounting seat, the pressing plate is set on positive pole terminal stud and negative pole terminal stud and is inwardly pressed O ring, pressing plate outside is fixed in joint mounting seat bottom by countersunk screw, the joint mounting seat is fixedly connected with thermocouple adapter seat by external screw.

Description

Technical Field

[0001] This utility model relates to the field of thermocouple wiring, and specifically to a high-voltage thermocouple wiring device. Background Technology

[0002] During the operation of a high-pressure vacuum electric melting furnace, the internal environment must maintain a high-pressure environment and a strict vacuum state to ensure the smooth progress of the smelting process and product quality. As a key component for temperature measurement, the performance of the thermocouple's wiring directly affects the accuracy of temperature measurement and the safety of equipment operation. However, existing thermocouple wiring devices have significant shortcomings when facing the harsh operating conditions of high-pressure vacuum electric melting furnaces. Conventional thermocouple wiring devices are prone to loosening and sealing failure under high pressure, leading to the disruption of the vacuum environment. This not only affects the smelting effect but may also cause safety hazards. Furthermore, during vacuum pressure holding, they cannot effectively prevent gas leakage, failing to meet the requirements for long-term stable operation of high-pressure vacuum electric melting furnaces. Therefore, there is an urgent need for a high-pressure resistant thermocouple wiring device that can adapt to the high-pressure vacuum environment and ensure leak-proof operation under high pressure and vacuum pressure holding. Utility Model Content

[0003] This invention provides a high-voltage thermocouple wiring device to address the problems of existing technologies.

[0004] The objective of this utility model can be achieved through the following technical solution: A high-pressure resistant thermocouple wiring device includes: a connector mounting base, a thermocouple adapter base, a positive terminal, a negative terminal, an O-ring, a pressure plate, an insulating sleeve, a lower wiring socket, and an upper wiring socket. The lower wiring socket is disposed inside the thermocouple adapter base. The positive and negative terminals are inserted into the insulating sleeve and extend upward to the outside to connect to the upper wiring socket. The lower ends of the positive and negative terminals are connected to the lower wiring socket. The O-ring is located inside the connector mounting base and is respectively sleeved on two sets of insulating sleeves. The insulating sleeve is located inside the connector mounting base. The pressure plate is sleeved on the positive and negative terminals and presses the O-ring inward. The outside of the pressure plate is fixed to the bottom of the connector mounting base by countersunk screws. The connector mounting base and the thermocouple adapter base are fixedly connected by external screws.

[0005] In a further improvement, the connector mounting base is provided with channels one, two, and three with successively decreasing diameters. Channel one is through at the bottom, channel two is connected to channel one at the bottom and channel three at the top, and channel three is through at the top. The lower wide portion of the insulating sleeve is located inside channel two, and the upper narrow portion passes through channel three. The O-ring includes O-ring one and O-ring two. O-ring one is fitted onto the lower end of the upper narrow portion of the insulating sleeve and is located inside channel two. O-ring two is fitted onto the inner side of the lower wide portion of the insulating sleeve. The pressure plate is located inside channel one.

[0006] In a further improvement, the upper end face of the thermocouple adapter is provided with an annular groove, and an annular sealing ring is provided in the annular groove. The annular sealing ring is disposed between the connector mounting base and the thermocouple adapter.

[0007] In a further improvement, both the pressure plate and the insulating sleeve are made of insulating materials.

[0008] Compared with the prior art, the advantages of this utility model's high-voltage thermocouple wiring device are as follows: The structure, where the positive and negative terminals are inserted into the insulating sleeve, achieves electrical isolation between the positive and negative poles. An O-ring is fitted onto the insulating sleeve, and a pressure plate presses the O-ring tightly, fixing it to the bottom of the connector mounting base. The elastic deformation of the O-ring creates a seal, preventing external gas from entering and ensuring vacuum sealing. It can withstand high pressure and prevent leakage. Furthermore, the overall structure is simple, maintenance-free, reliable, and easy to install. Attached Figure Description

[0009] Figure 1 This is a structural schematic diagram of the present invention. Figure 2 Internal cross-section of this utility model Figure 1 Structural diagram Figure 3 Internal cross-section of this utility model Figure 2 Structural diagram In the diagram, 1-connector mounting base, 11-channel one, 12-channel two, 13-channel three, 2-positive terminal. 3-Negative terminal, 4-Pressure plate, 5-Insulating sleeve, 6-O-ring, 61-O-ring one, 62-O-ring two, 7-Counterhead screw, 81-Lower terminal socket, 82-Upper terminal socket, 9-Thermocouple adapter, 91-Annular groove, 92-Annular sealing ring. Detailed Implementation

[0010] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; unless otherwise expressly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, they can refer to fixed connections or detachable connections, etc. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0011] The following is a description of the embodiments and appendices. Figures 1-3 The technical solution of this utility model will be further described below.

[0012] Example 1 A high-voltage resistant thermocouple wiring device includes: a connector mounting base 1, a thermocouple adapter base 9, a positive terminal 2, a negative terminal 3, an O-ring 6, a pressure plate 4, an insulating sleeve 5, a lower wiring socket 81, and an upper wiring socket 82. The lower wiring socket 81 is disposed inside the thermocouple adapter base 9. The positive terminal 2 and the negative terminal 3 are inserted into the insulating sleeve 5 and extend upward to the outside to connect to the upper wiring socket 82. The lower ends of the positive terminal 2 and the negative terminal 3 are connected to the lower wiring socket 81. The O-ring 6 is located inside the connector mounting base 1 and is respectively sleeved on two sets of insulating sleeves 5. The insulating sleeves 5 are located inside the connector mounting base 1. The pressure plate 4 is sleeved on the positive terminal 2 and the negative terminal 3 and presses the O-ring 6 inward. The outer side of the pressure plate 4 is fixed to the bottom of the connector mounting base 1 by countersunk screws 7. The connector mounting base 1 and the thermocouple adapter base 9 are fixedly connected by external screws.

[0013] like Figures 1-3 As shown, the principle of this utility model is as follows: The positive and negative terminals are inserted into the insulating sleeve, which provides electrical isolation between the positive and negative terminals and prevents short circuits. At the same time, the insulating sleeve provides support and protection for the terminals, enhancing their stability under high-voltage conditions. The lower connector is located inside the thermocouple adapter. The lower ends of the positive and negative terminals are connected to the lower connector, while the upper connector is connected to the upper end of the terminals and extends to the outside, thus realizing the electrical connection between the thermocouple and the external circuit, enabling the temperature signal to be transmitted smoothly. O-rings are fitted onto two sets of insulating sleeves, and pressure plates are fitted onto the positive and negative terminals, pressing the O-rings inward. The pressure plates are fixed to the bottom of the connector mounting base with countersunk screws. This structure utilizes the elastic deformation characteristics of the O-rings. When the pressure plates press the O-rings, they fit tightly against the contact surfaces of the insulating sleeves and the connector mounting base, forming a seal. This effectively prevents external gases from entering the device, ensuring its airtightness in a vacuum environment. Simultaneously, this structure can withstand a certain amount of pressure, preventing gas leakage under high-pressure conditions. The connector mounting base and the thermocouple adapter base are fixedly connected by external screws, making the entire device compact and stable. It can adapt to the vibration and pressure changes during the operation of the high-pressure vacuum electric melting furnace, ensuring the long-term stable operation of the device. Through the coordinated operation of various components, reliable electrical connection and good sealing performance are achieved in a high-pressure vacuum environment, effectively solving the problems existing in the prior art.

[0014] As a further preferred embodiment, the connector mounting base 1 is provided with channels 11, 12, and 13, with diameters decreasing sequentially. Channel 11 is through at the bottom. Channel 2 is connected to channel 11 at the bottom and to channel 3 at the top. Channel 3 is through at the top. The lower wide portion of the insulating sleeve 5 is located inside channel 2 12, and the upper narrow portion passes through channel 3 13. The O-ring 6 includes O-ring 61 and O-ring 62. O-ring 61 is fitted at the lower end of the upper narrow portion of the insulating sleeve 5 and is located inside channel 2 12. O-ring 62 is fitted inside the lower wide portion of the insulating sleeve 5. The pressure plate 4 is located inside channel 11.

[0015] The diameter variations of channels two and three create a stepped structure, providing precise positioning for the insulating sleeve and ensuring a more stable installation. The dual-seal design of O-rings one and two, under high pressure, prevents gas from entering through the gap between the narrow upper part of the insulating sleeve and channel three (O-ring one) and the wide lower part of the insulating sleeve and channel two (O-ring two), significantly improving the sealing performance of the device and ensuring no leakage under high-pressure vacuum conditions. Simultaneously, the pressure plate, located within channel one, compresses the insulating sleeve, making the entire sealing structure more compact and the pressure distribution more uniform, further enhancing the sealing effect and the stability of the device.

[0016] As a further preferred embodiment, the upper end face of the thermocouple adapter 9 is provided with an annular groove 91, and an annular sealing ring 92 is provided in the annular groove 91. The annular sealing ring 92 is disposed between the connector mounting base 1 and the thermocouple adapter 9.

[0017] The annular groove provides installation space for the annular seal, allowing it to be accurately installed in the correct position. When the connector mounting base and the thermocouple adapter base are fixedly connected by external screws, the annular seal is compressed, causing elastic deformation and tightly filling the contact surface between the connector mounting base and the thermocouple adapter base, forming a reliable sealing barrier. This effectively prevents gas leakage from the connection point, further improving the overall sealing performance of the device and ensuring that the vacuum environment inside the high-pressure vacuum electric melting furnace is not disrupted.

[0018] As a further preferred embodiment, both the pressure plate 4 and the insulating sleeve 5 are made of insulating materials. Specifically, polytetrafluoroethylene (PTFE) is preferred. The use of PTFE for both the pressure plate and the insulating sleeve serves two purposes: firstly, its excellent insulation properties further ensure electrical isolation between the positive and negative terminals, preventing leakage and improving the electrical safety of the device; secondly, PTFE's resistance to chemical corrosion and high temperatures allows it to adapt to the complex chemical environment and high-temperature conditions inside the high-pressure vacuum electric melting furnace, ensuring that the pressure plate and insulating sleeve will not be damaged by chemical corrosion or high temperatures during long-term use, thereby maintaining the sealing performance and structural stability of the device and extending its service life.

[0019] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A high-voltage resistant thermocouple wiring device, characterized in that, include: The device comprises a connector mounting base, a thermocouple adapter base, a positive terminal, a negative terminal, an O-ring, a pressure plate, an insulating sleeve, a lower wiring socket, and an upper wiring socket. The lower wiring socket is located inside the thermocouple adapter base. The positive and negative terminals are inserted into the insulating sleeve and extend upwards to connect to the upper wiring socket. The lower ends of the positive and negative terminals are connected to the lower wiring socket. The O-rings are located inside the connector mounting base and are respectively fitted onto two sets of insulating sleeves. The insulating sleeves are located inside the connector mounting base. The pressure plate is fitted onto the positive and negative terminals and presses the O-rings inwards. The outer side of the pressure plate is fixed to the bottom of the connector mounting base by countersunk screws. The connector mounting base and the thermocouple adapter base are fixedly connected by external screws.

2. The high-voltage thermocouple wiring device according to claim 1, characterized in that, The connector mounting base has three channels with successively decreasing diameters: channel one, channel two, and channel three. Channel one is open at the bottom. Channel two is connected to channel one at the bottom and to channel three at the top. Channel three is open at the top. The lower wide part of the insulating sleeve is located in channel two, and the upper narrow part passes through channel three. The O-ring includes O-ring one and O-ring two. O-ring one is fitted at the lower end of the upper narrow part of the insulating sleeve and is located in channel two. O-ring two is fitted inside the lower wide part of the insulating sleeve. The pressure plate is located in channel one.

3. The high-voltage thermocouple wiring device according to claim 1, characterized in that, The upper end face of the thermocouple adapter is provided with an annular groove, and an annular sealing ring is provided in the annular groove. The annular sealing ring is disposed between the connector mounting base and the thermocouple adapter.

4. The high-voltage thermocouple wiring device according to claim 1, characterized in that, Both the pressure plate and the insulating sleeve are made of polytetrafluoroethylene.

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