Platinum rhodium thermocouple with explosion-proof structure
By installing gaskets and springs inside the mounting sleeve of the platinum-rhodium thermocouple to form a circuit breaker, the problems of wiring devices and equipment explosion caused by high temperature are solved, and the safety and sustainable use of the equipment are achieved.
Patent Information
- Application Number
- CN202422211845.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-10
AI Technical Summary
When using a platinum-rhodium thermocouple to detect high-temperature fluid temperature, the high temperature will cause burns and damage to the wiring device, and may cause some parts of the platinum-rhodium thermocouple body to explode, causing secondary damage.
A platinum-rhodium thermocouple with explosion-proof structure is designed. By setting gaskets and springs inside the mounting sleeve, during the high-temperature conduction process, when the aluminum wire breaks, the spring pushes the gaskets to both sides, forming a broken circuit state, reducing high-temperature conduction and avoiding equipment explosion.
It effectively avoids damage to the wiring device caused by high temperature and explosion of the platinum and rhodium thermocouple body, extends the service life of the equipment and improves the utilization rate of resources.
Smart Images
Figure CN222993863U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of platinum-rhodium thermocouples, and particularly relates to a platinum-rhodium thermocouple with an explosion-proof structure. Background Technique
[0002] The platinum-rhodium thermocouple is also known as a high-temperature noble metal thermocouple. Platinum-rhodium is divided into single platinum-rhodium (platinum-rhodium 10 - platinum-rhodium) and double platinum-rhodium (platinum-rhodium 30 - platinum-rhodium 6). As a temperature measurement sensor, it is usually used in combination with a temperature transmitter, a regulator, a display instrument, etc. to form a process control system.
[0003] However, during the process of using the platinum-rhodium thermocouple body to detect the fluid temperature, it is necessary to control the detection probe to contact the high-temperature fluid. When the platinum-rhodium thermocouple body contacts the high-temperature fluid, the temperature generated by the high-temperature fluid contacts the platinum-rhodium thermocouple body. After the high temperature is guided to the circuit board through the platinum-rhodium thermocouple body, the high temperature will cause scalding damage to the wiring device, and the high temperature will cause some components of the platinum-rhodium thermocouple body to explode. When the components of the platinum-rhodium thermocouple body explode, it will cause secondary damage to the wiring device. For this reason, we have proposed a platinum-rhodium thermocouple with an explosion-proof structure. Content of the Utility Model
[0004] In view of the deficiencies of the existing platinum-rhodium thermocouple with an explosion-proof structure, the utility model provides a platinum-rhodium thermocouple with an explosion-proof structure, which has the advantages that a gasket is arranged inside the mounting sleeve, and a spring is arranged inside the gasket. During the high-temperature conduction process, when the high temperature conducts to the inside of the connection box body, the aluminum wire breaks due to the high temperature, thus reducing the high-temperature conduction and preventing secondary explosion damage to the equipment, and solving the problems raised in the above background technique.
[0005] The utility model provides the following technical scheme: A platinum-rhodium thermocouple with an explosion-proof structure, including a mounting sleeve, a graphite sleeve is sleeved outside one side of the mounting sleeve, a protective sleeve is installed inside the end of the graphite sleeve, a connection box body is installed inside the mounting sleeve, a platinum-rhodium thermocouple body is arranged inside the connection box body, a first wiring piece is sleeved outside the connection box body, an insulating plate is movably sleeved inside the connection box body, a gasket is installed inside the insulating plate, a spring is arranged on one side of the gasket, an aluminum wire is fixedly connected inside the gasket, and a second wiring piece is installed on the side of the gasket.
[0006] Preferably, the graphite sleeve includes a positioning sleeve, and reinforcing ribs are installed inside the positioning sleeve.
[0007] Preferably, the graphite sleeve is made of graphite material, and the platinum-rhodium thermocouple body extends into the inside of the protective sleeve, and the protective sleeve is arranged outside the platinum-rhodium thermocouple body.
[0008] Preferably, threaded grooves are provided on the outer surface of the connection box body, and a connection plug is installed on the outer surface of the mounting sleeve. The plug is in contact with the first connection piece and the second connection piece.
[0009] Preferably, both ends of the platinum-rhodium thermocouple body are respectively in contact with the first connection piece and the gasket, and at the same time, the end of the platinum-rhodium thermocouple body passes through the mounting sleeve.
[0010] Preferably, the gasket is installed between the platinum-rhodium thermocouple body and the second connection piece, and one end of the gasket is threadedly connected to the insulating plate.
[0011] Compared with the existing platinum-rhodium thermocouple with an explosion-proof structure, the present utility model has the following beneficial effects:
[0012] 1. For the platinum-rhodium thermocouple with the explosion-proof structure, a gasket is installed inside the insulating plate. The gasket is arranged between the platinum-rhodium thermocouple body and the second connection piece. At the same time, when the temperature inside the circuit is too high, the high temperature is conducted to the inside of the mounting sleeve. The aluminum wire melts after being heated, and at the same time, the spring pushes the gasket to move to both sides, that is, an open circuit state is formed between the plug and the mounting sleeve, thereby reducing the explosion of the equipment due to high temperature and circuit aging. Moreover, by removing the second connection piece, the gasket can be disassembled and replaced inside the insulating plate, so that the equipment can be continuously recycled, improving the resource utilization rate.
[0013] 2. For the platinum-rhodium thermocouple with the explosion-proof structure, a graphite sleeve is sleeved outside the mounting sleeve. The graphite sleeve protects the outside of the mounting sleeve, preventing the platinum-rhodium thermocouple from contacting high temperature, and at the same time, the internal material of the platinum-rhodium thermocouple is prevented from cracking due to rapid contact with high temperature, thus affecting the temperature detection effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 is a schematic diagram of the main structure of the present utility model;
[0015] Figure 2 is a schematic diagram of the sectional structure of the main body of the present utility model;
[0016] Figure 3 is a schematic diagram of the partial enlarged structure of the detection part of the platinum-rhodium thermocouple body of the present utility model;
[0017] Figure 4 is a schematic diagram of the structure of the platinum-rhodium thermocouple of the present utility model without a graphite sleeve;
[0018] Figure 5 is a schematic diagram of the partial sectional structure of the protective sleeve of the present utility model;
[0019] Figure 6 is a schematic diagram of the enlarged structure at position A of the present utility model.
[0020] In the figure: 1, mounting sleeve; 2, graphite sleeve; 21, positioning sleeve; 22, reinforcing rib; 3, protective sleeve; 4, connection box body; 5, platinum-rhodium thermocouple body; 6, first wiring piece; 7, insulating plate; 8, gasket; 9, spring; 10, aluminum wire; 11, second wiring piece. Specific embodiments
[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.
[0022] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , a platinum-rhodium thermocouple with an explosion-proof structure, including a mounting sleeve 1, a graphite sleeve 2 is sleeved outside one side of the mounting sleeve 1, a protective sleeve 3 is installed inside the end of the graphite sleeve 2, a connection box body 4 is installed inside the mounting sleeve 1, a platinum-rhodium thermocouple body 5 is arranged inside the connection box body 4, a first wiring piece 6 is sleeved outside the connection box body 4, an insulating plate 7 is movably sleeved inside the connection box body 4, a gasket 8 is installed inside the insulating plate 7, a spring 9 is arranged on one side of the gasket 8, an aluminum wire 10 is fixedly connected inside the gasket 8, and a second wiring piece 11 is installed on the side of the gasket 8.
[0023] Please refer to Figure 5 , the graphite sleeve 2 includes a positioning sleeve 21, and a reinforcing rib 22 is installed inside the positioning sleeve 21. By installing the reinforcing rib 22 inside the positioning sleeve 21, the reinforcing rib 22 processes the inside of the positioning sleeve 21 to improve the overall stability of the positioning sleeve 21. When the graphite sleeve 2 drives the platinum-rhodium thermocouple body 5 to move to the detection area, the reinforcing rib 22 avoids the problem that the positioning sleeve 21 is damaged due to touching or the like during use, and improves the protection of the outside of the platinum-rhodium thermocouple body 5 when the graphite sleeve 2 is used.
[0024] Please refer to Figure 2, the graphite sleeve 2 is made of graphite material. At the same time, the platinum-rhodium thermocouple body 5 extends into the interior of the protective sleeve 3. The protective sleeve 3 is arranged outside the platinum-rhodium thermocouple body 5. The graphite sleeve 2 is prepared by using graphite material, that is, the graphite sleeve 2 drives the platinum-rhodium thermocouple body 5 to move to the high-temperature area. At the same time, the protective sleeve 3 is sleeved outside the graphite sleeve 2. That is, when the graphite sleeve 2 moves to the detection area, the protective sleeve 3 pushes the solid impurities to move outward, reducing the impurities from moving into the interior of the graphite sleeve 2 and affecting the stable detection effect. At the same time, after the protective sleeve 3 contacts the molten steel, the protective sleeve 3 is heated and melted, increasing the detection time of the platinum-rhodium thermocouple body 5 for the high-temperature area, and then improving the accuracy during detection.
[0025] Please refer to Figure 3 , a threaded groove is provided on the outside of the connection box body 4. A connection plug is installed on the outside of the mounting sleeve 1. The plug contacts the first wiring piece 6 and the second wiring piece 11. By providing a threaded groove on the outside of the connection box body 4, when controlling the installation of the plug on the outside of the mounting sleeve 1, the plug is threadedly sleeved and limited with the threaded groove provided on the outside of the connection box body 4. That is, the plug can be installed on one side of the mounting sleeve 1, and the inside of the plug is in contact with the first wiring piece 6 and the second wiring piece 11 in sequence. That is, the device forms a conductive state. At the same time, after the platinum-rhodium thermocouple body 5 is heated and changes, according to the changed state of the platinum-rhodium thermocouple body 5, the temperature of the detection area is then detected and processed.
[0026] Please refer to Figure 6 , both ends of the platinum-rhodium thermocouple body 5 are in contact with the first wiring piece 6 and the gasket 8 respectively. At the same time, the end of the platinum-rhodium thermocouple body 5 passes through the mounting sleeve 1. By controlling the installation of the gasket 8 after contacting the platinum-rhodium thermocouple body 5, when the platinum-rhodium thermocouple body 5 detects the temperature signal, and at the same time when the temperature in the detection area is high and the high temperature is guided into the interior of the mounting sleeve 1, the aluminum wire 10 is heated and melted. At the same time, the spring 9 pushes the gasket 8 to move to both sides, that is, the device is opened, and then to prevent the device from exploding due to high temperature.
[0027] Please refer to Figure 6 , the gasket 8 is installed between the platinum-rhodium thermocouple body 5 and the second wiring piece 11. One end of the gasket 8 is threadedly connected to the insulating plate 7. By the internal threaded connection of one end of the gasket 8 with the insulating plate 7, when the gasket 8 is installed, its stability can be ensured. And after removing the second wiring piece 11, the gasket 8 can be taken out from the interior of the connection box body 4. That is, when the aluminum wire 10 is broken or damaged, by replacing the gasket 8, the device can continue to be used, improving the utilization rate of the device.
[0028] Working principle: When in use, the graphite sleeve 2 is sleeved outside one side of the mounting sleeve 1, and at the same time, the platinum-rhodium thermocouple body 5 extends into the protective sleeve 3. At the same time, the outside of the mounting sleeve 1 is connected to the plug, that is, a path is formed between the platinum-rhodium thermocouple body 5 and the plug. The platinum-rhodium thermocouple body 5 is extended to the detection area. After the protective sleeve 3 is heated, it melts. At the same time, the detected liquid contacts the platinum-rhodium thermocouple body 5. After the platinum-rhodium thermocouple body 5 is heated, it changes. By detecting the change state of the platinum-rhodium thermocouple body 5 through the circuit, the temperature of the detection area can be detected and processed. At the same time, when the detected temperature is too high, and due to the aging of the circuit of the device, a short-circuit high-temperature state occurs in the circuit. At the same time, after the aluminum wire 10 is heated, the aluminum wire 10 melts. At the same time, the circuit between the plug and the platinum-rhodium thermocouple body 5 forms an open circuit state, and the conduction of heat is detected to avoid the explosion of the platinum-rhodium thermocouple.
[0029] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A platinum-rhodium thermocouple with an explosion-proof structure, comprising a mounting sleeve (1), a graphite sleeve (2) being sleeved on the outside of one side of the mounting sleeve (1), and a protective sleeve (3) being installed inside the end of the graphite sleeve (2), characterized in that: A connecting box body (4) is installed inside the installation sleeve (1), a platinum-rhodium thermocouple body (5) is arranged on the inner side of the connecting box body (4), a first wiring piece (6) is sleeved on the outside of the connecting box body (4), an insulating plate (7) is movably sleeved inside the connecting box body (4), a gasket (8) is installed inside the insulating plate (7), a spring (9) is arranged on one side of the gasket (8), an aluminum wire (10) is fixedly connected inside the gasket (8), and a second wiring piece (11) is installed on the side of the gasket (8).
2. A platinum-rhodium thermocouple with an explosion-proof structure according to claim 1, characterized in that: The graphite sleeve (2) comprises a positioning sleeve (21), and a reinforcing rib (22) is installed inside the positioning sleeve (21).
3. A platinum-rhodium thermocouple with an explosion-proof structure according to claim 1, characterized in that: The graphite sleeve (2) is made of graphite material, and the platinum-rhodium thermocouple body (5) extends to the inside of the protective sleeve (3), and the protective sleeve (3) is arranged outside the platinum-rhodium thermocouple body (5).
4. The platinum-rhodium thermocouple with an explosion-proof structure according to claim 1, characterized in that: The outside of the connection box body (4) is provided with a threaded groove, and the outside of the installation sleeve (1) is provided with a connection plug, which is in contact with the first wiring piece (6) and the second wiring piece (11).
5. The platinum-rhodium thermocouple with an explosion-proof structure according to claim 1, characterized in that: The two ends of the platinum-rhodium thermocouple body (5) are in contact with the first wiring piece (6) and the gasket (8) respectively, and the end of the platinum-rhodium thermocouple body (5) passes through the installation sleeve (1).
6. The platinum-rhodium thermocouple with an explosion-proof structure according to claim 1, characterized in that: The gasket (8) is installed between the platinum-rhodium thermocouple body (5) and the second terminal plate (11), and one end of the gasket (8) is threadedly connected to the insulating plate (7).