High-temperature-resistant thermal resistor capable of being quickly plugged and unplugged
By designing a fast plug-in and unpluggable aviation connector connection method, the problem of poor connection stability of the thermal resistance in high temperature environment is solved, and the rapid replacement of the thermal resistance and high-precision measurement are achieved.
Patent Information
- Application Number
- CN202421851917.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-01
AI Technical Summary
Existing thermal resistances need to be replaced after long-term use, and in high temperature environments, it is easy to cause disconnection or cracks at the parts connections, affecting the measurement accuracy.
A fast plug-in and unpluggable high-temperature resistance is designed, and the female and male of the aerospace connector are connected. The connection is ensured by physical crimping and high-temperature welding to avoid falling off or cracks at high temperatures.
It realizes rapid replacement of thermal resistance and stable connection in high temperature environments, improves measurement accuracy and repair speed, and reduces replacement costs.
Smart Images
Figure CN222866068U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of thermal resistors, in particular to a high-temperature resistant thermal resistor which can be quickly plugged in and out. Background Art
[0002] Thermal resistors are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert temperature signals into resistance signals, which are then converted into the temperature of the measured medium through electrical instruments (secondary instruments). The appearance of various thermal resistors is often very different due to needs, but their basic structure is roughly the same. They are usually composed of platinum resistance chips, insulating sleeve protection tubes, and junction boxes. They are usually used in conjunction with display instruments, recording instruments, and electronic regulators.
[0003] At present, thermal resistors need to be replaced after long-term use. The existing replacement method is to replace the entire device, which is time-consuming, labor-intensive, and uneconomical. At the same time, the thermal resistor is in a high-temperature working environment, and a large amount of heat energy will be transferred to the equipment. The heat energy will cause disconnection or cracks at the connection of some components, affecting the data collected by the equipment or causing inaccurate accuracy. Utility Model Content
[0004] The utility model aims to provide a high temperature resistant thermal resistor which can be quickly plugged in and out, so as to solve the problems raised in the above-mentioned background technology.
[0005] The utility model solves the technical problem by adopting the following technical solutions:
[0006] A high-temperature resistant thermal resistor that can be quickly plugged in and out comprises a measuring part and a connection and replacement part, wherein the measuring part comprises a protection tube, a nut and a thread are fixedly mounted on the outer wall of the protection tube, the thread is located below the nut, a temperature measuring round head is fixedly mounted on the bottom of the protection tube, a thermal resistor is arranged inside the protection tube, the thermal resistor is closely adjacent to the temperature measuring round head, an output end of the thermal resistor is connected to a metal mesh wire, the other end of the metal mesh wire is connected to an internal part of the connection and replacement part, one side of the metal mesh wire connected to the thermal resistor is fixed inside the protection tube, so that the metal mesh wire is closely connected to the protection tube without disconnection, thereby making the metal mesh wire, the protection tube and the thermal resistor connected as a whole, and the connection and replacement part comprises an aviation connector female head and an aviation connector male head, The other end of the metal mesh wire is connected to the male head of the aviation connector by physical crimping and high-temperature welding. The metal mesh wire and the wiring part of the male head of the aviation connector are connected by physical crimping to ensure that the two will not fall off or crack under high temperature conditions. Subsequently, the two are more closely combined by high-temperature welding to ensure the stability and accuracy of electrical signal transmission. One end of the female head of the aviation connector is movably connected to one end of the male head of the aviation connector, and the two can be quickly plugged in and out. When replacing the measuring part, the male head of the aviation connector can be quickly removed from the female head of the aviation connector, and then the male head of the aviation connector and the measuring part can be replaced, thereby improving the speed of maintenance. The other end of the female head of the aviation connector is also connected to the metal mesh wire by physical crimping and high-temperature welding.
[0007] Preferably, a certain amount of thermal grease is poured between the thermal resistor and the inner wall of the protection tube to ensure faster and more stable heat transfer and more accurate measurement values. At the same time, the thermal grease makes the thermal resistor more stably close to the temperature measuring round head, and the thermal resistor will not be offset due to vibration, thereby ensuring the accuracy of the measurement value.
[0008] Preferably, an anti-bending spring is provided on the surface of the metal mesh wire, and the anti-bending spring is used to prevent the metal mesh wire from breaking due to vibration or bending.
[0009] The advantages and positive effects of the utility model are:
[0010] 1. The utility model divides the whole device into two parts by connecting and replacing the part. When the thermal resistor needs to be replaced, it is only necessary to unplug the female head of the aviation connector and the male head of the aviation connector, which is convenient and quick.
[0011] 2. The utility model connects the metal mesh wire and the male connector of the aviation connector by physical crimping, ensuring that the two will not fall off or crack under high temperature conditions, and then the two are more closely combined by high-temperature welding to ensure the stability and accuracy of electrical signal transmission. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0013] Figure 1 This is a schematic diagram of the main structure of a high-temperature resistant thermal resistor that can be quickly plugged in and out of the utility model;
[0014] Figure 2 For this utility model Figure 1 Schematic diagram of disconnection of the middle connection replacement part;
[0015] Figure 3 For this utility model Figure 1 A is a schematic diagram of the enlarged structure.
[0016] The marks in the attached drawings are described as follows: 10, measuring part; 11, connection and replacement part; 12, nut; 13, metal mesh wire; 14, anti-bending spring; 15; thread 16, thermal resistor; 17, female head of aviation connector; 18, male head of aviation connector; 19, protective tube; 20, temperature measuring round head. DETAILED DESCRIPTION
[0017] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.
[0018] Combine the following Figure 1-3 The utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are the same as Figure 1 The view direction is consistent in front, back, left, right, up and down directions. Figure 1 It is a front view of the device of the utility model. Figure 1 The directions shown are consistent with the front, back, left, right, up and down directions of the device of the utility model when viewed from the front.
[0019] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:
[0020] See also Figure 1-3, an embodiment provided by the utility model: a quickly pluggable high-temperature resistant thermal resistor, comprising a measuring part 10 and a connecting and replacing part 11, wherein the measuring part 10 comprises a protective tube 19, a nut 12 and a thread 15 are fixedly mounted on the outer wall of the protective tube 19, the thread 15 is located below the nut 12, a temperature measuring round head 20 is fixedly arranged at the bottom of the protective tube 19, a thermal resistor 16 is arranged inside the protective tube 19, the thermal resistor 16 is closely located at the temperature measuring round head 20, an output end of the thermal resistor 16 is connected to a metal mesh wire 13, the other end of the metal mesh wire 13 is connected to the internal parts of the connecting and replacing part 11, one side of the metal mesh wire 13 connected to the thermal resistor 16 is fixed inside the hollow tube 19, so that the metal mesh wire 13 is closely connected to the protective tube 19, and no disconnection occurs, so that the metal mesh wire 13, the protective tube 19, and the thermal resistor 16 can be connected as a whole, the connecting and replacing part 11 includes an aviation connector female head 17 and an aviation connector male head 18, and the other end of the metal mesh wire 13 is connected to the aviation connector male head 18 by physical crimping and high-temperature welding; the metal mesh wire 13 and the aviation connector male head 18 are connected at the connection point by physical crimping, ensuring that the two will not fall off or crack under high temperature conditions, and then the two are more closely combined by high-temperature welding to ensure the stability and accuracy of electrical signal transmission, one end of the aviation connector female head 17 and one end of the aviation connector male head 18 are movably connected, and the two can be quickly plugged in and out, and when replacing the measuring part 10, the aviation connector male head 18 can be quickly removed from the aviation connector female head 17, and then the aviation connector male head 18 and the measuring part 10 are replaced, thereby improving the speed of maintenance, and the other end of the aviation connector female head 17 is also connected to the metal mesh wire 13 by physical crimping and high-temperature welding.
[0021] In addition, in one embodiment, a certain amount of thermal grease is poured between the thermal resistor 16 and the inner wall of the protective tube 19, so as to ensure faster and more stable heat transfer and make the measurement value more accurate. At the same time, the thermal grease makes the thermal resistor 16 more stably close to the temperature measuring round head 20, and the thermal resistor 16 will not be offset due to vibration, thereby ensuring the accuracy of the measurement value.
[0022] In addition, in one embodiment, an anti-bending spring 14 is provided on the surface of the metal mesh wire 13, and the anti-bending spring 14 is used to prevent the metal mesh wire 13 from breaking due to vibration or bending.
[0023] During the specific implementation, the thread 15 is connected to the device to be tested, and the thread 15 is driven to rotate by rotating the nut 12 with a wrench, so as to be tightly connected with the device. At this time, the medium to be tested is in contact with the temperature measuring round head 20, and the heat is transferred to the thermal resistor 16 through the measuring part 10 and the thermal grease. Since the thermal resistor 16 is close to the medium to be tested and the thermal grease has good thermal conductivity, the thermal resistor 16 can measure accurate values. During use, since the device to be tested generates a large amount of heat energy, the heat energy will cause disconnection or cracks at the connection of some parts, which will affect the data collected by the device or cause inaccurate accuracy. The device adopts physical crimping and high-temperature welding to connect the metal mesh wire 13 with the female head 17 of the aviation connector and the male head 18 of the aviation connector. This processing method ensures that the two will not fall off or crack under high temperature conditions, and the high-temperature welding method makes the two more closely combined to ensure the stability and accuracy of electrical signal transmission.
[0024] When a problem occurs in the measuring part 10, the female aviation connector 17 and the male aviation connector 18 in the connection replacement part 11 can be quickly unplugged. Only the measuring part 10 needs to be replaced with the male aviation connector 18. The operation is simple and fast, which greatly reduces the speed of replacing parts and better measures the values of the equipment to be tested.
[0025] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive. Therefore, the present invention is not limited to the embodiments described in the specific implementation manner. Any other implementation manners derived by those skilled in the art based on the technical solution of the present invention also fall within the scope of protection of the present invention.
Claims
1. A high temperature resistant thermal resistor capable of rapid plugging and unplugging, comprising a measuring unit (10) and a connection and replacement unit (11), characterized in that: The measuring part (10) comprises a protective tube (19), a nut (12) and a thread (15) are fixedly mounted on the outer wall surface of the protective tube (19), the thread (15) is located below the nut (12), a temperature measuring round head (20) is fixedly arranged at the bottom of the protective tube (19), a thermal resistor (16) is arranged inside the temperature measuring round head (20), the thermal resistor (16) is closely located at the temperature measuring round head (20), an output end of the thermal resistor (16) is connected to a metal mesh wire (13), the other end of the metal mesh wire (13) is connected to the internal parts of the connection replacement part (11), and one side of the metal mesh wire (13) connected to the thermal resistor (16) is fixed to the protective tube (19). Inside, the metal mesh wire (13) is tightly connected to the protective tube (19), the metal mesh wire (13), the protective tube (19), and the thermal resistor (16) can be connected as a whole, the connection and replacement part (11) includes an aviation connector female head (17) and an aviation connector male head (18), the other end of the metal mesh wire (13) is connected to the aviation connector male head (18) by physical crimping and high-temperature welding, one end of the aviation connector female head (17) is movably connected to one end of the aviation connector male head (18), and the two can be quickly plugged in and out, and the other end of the aviation connector female head (17) is also connected to the metal mesh wire (13) by physical crimping and high-temperature welding.
2. The quickly pluggable high temperature resistant thermal resistor according to claim 1, characterized in that: A certain amount of thermal conductive silicone grease is poured between the thermal resistor (16) and the inner wall surface of the protective tube (19).
3. The quickly pluggable high temperature resistant thermal resistor according to claim 1, characterized in that: An anti-bending spring (14) is provided on the surface of the metal mesh wire (13).