A precision platinum resistance thermometer vibration fixture

Abstract

The utility model relates to a kind of precision platinum resistance thermometer vibration clamps, including clamp body, installation space is formed inside clamp body, space is equipped with multiple thermometer traps for positioning thermometer, and silicon rubber material is filled between thermometer trap. Clamp body is reserved component installation area while guaranteeing structural strength, and thermometer is protected;Thermometer trap is arranged in clamp, can make thermometer more close to measured area, and it is beneficial to the temperature of measured object that thermometer is accurately collected;The design of multiple thermometer traps, multiple thermometers can be installed simultaneously, satisfy the temperature measurement demand of multiple measuring points, multiple regions, improve the comprehensiveness of measurement;The structure of trap is simultaneously used to preliminarily space limit thermometer, avoid thermometer to shake, shift at will under the action of external force such as vibration, for subsequent firm fixation by filling material lay the positioning foundation;The silicon rubber material filled between thermometer trap can firmly fix and region seal isolation thermometer.

Description

Technical Field

[0001] This utility model relates to the field of temperature measurement device technology, specifically to a vibration clamp for a precision platinum resistance thermometer. Background Technology

[0002] Precision platinum resistance thermometers, with their ultra-high accuracy, are widely used in high-precision temperature measurement scenarios such as steam turbine monitoring, aerospace testing, and laboratory vibration simulation. However, existing fixtures are difficult to adapt to vibration environments and have significant drawbacks: First, the positioning accuracy is insufficient, lacking a dedicated adaptation structure for the sensing section. Relying solely on slots or binding for fixation, the sensing section is prone to shifting during vibration, leading to uneven thermal contact, increased measurement errors, and a loss of accuracy. Second, the fixation is unreliable. The platinum resistance wire is only tens of micrometers thick, and the fixture lacks a vibration-proof mechanism. High-frequency impacts can easily cause the thermometer to loosen and the resistance wire to break, significantly shortening its lifespan. Third, the lack of sealing and buffering allows dust and coolant to easily intrude, affecting temperature measurement, and direct vibration transmission exacerbates component damage. Fourth, poor adaptability, as most are dedicated to a single model. Changing to a different specification thermometer requires replacing the entire fixture, increasing costs and reducing monitoring efficiency. Utility Model Content

[0003] This utility model addresses the technical problems existing in the prior art by providing a vibration clamp for a precision platinum resistance thermometer.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A vibration fixture for a precision platinum resistance thermometer includes a fixture body, the interior of which forms an installation space. Multiple thermometer traps for positioning the thermometer are arranged within the space, and the spaces between the thermometer traps are filled with silicone rubber material.

[0005] The beneficial effects of this utility model are: The fixture body, while ensuring structural strength, provides a reserved area for component installation to protect the thermometer. The thermometer traps are located inside the fixture, allowing the thermometers to be closer to the measured area, facilitating accurate temperature acquisition. The design of multiple thermometer traps allows for the simultaneous installation of multiple thermometers, meeting the temperature measurement needs of multiple measurement points and areas, and improving the comprehensiveness of the measurement. At the same time, the trap structure provides initial spatial restraint for the thermometers, preventing them from shaking or shifting under external forces such as vibration, laying the foundation for subsequent secure fixing through filling materials. The silicone rubber material filling the space between the thermometer traps provides secure fixing and regional sealing isolation for the thermometers.

[0006] Furthermore, the clamp body has a through hole in the middle to facilitate the passage and collection of wire harnesses.

[0007] Furthermore, the fixture body is provided with a connecting hole, and a bolt is installed in the connecting hole. The fixture body is fixed to the external structure by the bolt. The connecting hole is the connection hub between the thermometer mounting vibration fixture and the external structure, and it solves the problems of reliable connection and balanced force under vibration.

[0008] Furthermore, the connecting holes are located at the four corners of the fixture body, on the outside of the silicone rubber material. The connecting holes are positioned to avoid the thermometer trap and the filling layer, and are symmetrically distributed along the center of gravity of the fixture to prevent eccentric force distribution.

[0009] Furthermore, the fixture body has a frame-like structure, including an upper clamping plate and a lower clamping plate, which are fastened together by connecting components. This frame-like structure design ensures sufficient structural strength for the fixture, preventing deformation under vibration and providing a stable support for the thermometer and other components. On the other hand, the hollow area of ​​the frame provides ample space for the placement of the thermometer, the handling of filling materials, and thermal interaction with the object being measured, facilitating installation, maintenance, and heat transfer during temperature measurement.

[0010] Furthermore, the connecting assembly includes screws, and screw holes are provided at corresponding positions on the upper and lower clamping plates. During the screw fixing process, the two clamping plates are tightly fitted together by the pre-tightening force, forming an elastic wrapping and fixing of the thermometer. At the same time, the rigid constraint after the fit and the buffering effect of the sealing layer reduce the transmission of vibration to the thermometer, prevent the platinum resistance wire from breaking due to impact, protect the temperature sensing section from stable contact with the object being measured, and ensure temperature measurement accuracy.

[0011] Furthermore, the thermometer traps are arranged in multiple groups, each group comprising multiple thermometer traps arranged in parallel. This multi-group design allows each group of thermometer traps to correspond to a measured area, and the multiple parallel thermometer traps within each group can be used to deploy multiple thermometers in the same area, achieving dual coverage of area grouping and multiple measurement points within the same area. This eliminates the need for additional sets of clamps, enabling comprehensive temperature acquisition of complex equipment. Compared to a single-group design, the temperature measurement coverage is expanded several times, significantly improving monitoring efficiency.

[0012] Furthermore, the thermometer trap is a cylindrical groove with a diameter of φ3.4mm. The shape of the cylindrical groove is compatible with the shape of common thermometers with cylindrical sensing sections, allowing the sensing part of the thermometer to fit well with the inner wall of the trap, ensuring tight contact. The diameter of φ3.4mm is precisely designed to match the outer diameter of the thermometer to be installed, ensuring that the thermometer can be smoothly inserted into the trap, and also achieving initial radial positioning of the thermometer through size adaptation, reducing the displacement deviation of the thermometer in the radial direction. This provides a precise positioning prerequisite for the subsequent filling and fixing of GD414 silicone rubber, making the thermometer more firmly fixed and more accurately positioned after filling.

[0013] Furthermore, the silicone rubber material used is GD414 single-component room temperature vulcanizing silicone rubber. GD414 single-component room temperature vulcanizing silicone rubber possesses three key characteristics suitable for vibration clamp requirements: wide temperature range stability; high elasticity and fatigue resistance; and good adhesion and filling properties. GD414 silicone rubber achieves a firm fixation of the thermometer through a triple mechanism of "wrapping-buffering-limiting," meeting the anti-loosening requirements in vibration scenarios. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the structure of the upper clamping plate in an embodiment of the present utility model; Figure 3 This is a schematic diagram of the structure of the lower clamping plate in an embodiment of the present invention; The attached diagram lists the components represented by each number as follows: 1. Fixture body, 2. Thermometer trap, 3. Silicone rubber material, 4. Through hole, 5. Connecting hole, 6. Connecting assembly, 7. Upper clamping plate, 8. Lower clamping plate. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0016] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0017] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this technology based on the specific circumstances.

[0018] In the description of this application, spatial relation terms such as "below," "under," "below," "below," "above," "over," etc., are used herein to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientation shown in the figures, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figures is flipped, an element or feature described as "below" or "under" or "below" of other elements or features will be oriented "above" other elements or features. Therefore, the exemplary terms "below" and "under" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein are interpreted accordingly.

[0019] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0020] like Figures 1 to 3 As shown, this embodiment provides a vibration fixture for a precision platinum resistance thermometer, including a fixture body 1. The fixture body 1 has an internal installation space containing multiple thermometer traps 2 for positioning the thermometers. Silicone rubber material 3 fills the spaces between the thermometer traps 2. The purpose of this embodiment is to: ensure structural strength while reserving space for component installation, thus protecting the thermometers; place the thermometer traps 2 inside the fixture, allowing the thermometers to be closer to the measured area, facilitating accurate temperature acquisition; the design of multiple thermometer traps 2 allows for the simultaneous installation of multiple thermometers, meeting the temperature measurement needs of multiple measurement points and areas, and improving the comprehensiveness of the measurement; simultaneously, the trap structure provides initial spatial positioning of the thermometers, preventing them from swaying or shifting under external forces such as vibration, laying the foundation for subsequent secure fixing through the filling material; the silicone rubber material 3 filling the spaces between the thermometer traps 2 provides secure fixing and regional sealing isolation for the thermometers.

[0021] Specifically: The fixture body 1 has a through hole 4 in the middle to facilitate the passage and collection of wire harnesses. In fixtures with multiple thermometer traps 2, each thermometer needs to have a lead wire (wire harness) connected to an external data acquisition device. Without a centralized wire harness channel, the wire harnesses tend to be scattered around the fixture. Under vibration, the scattered wire harnesses will rub and pull against the fixture and external equipment, which can easily lead to damage to the wire harness insulation layer after long-term use, causing short circuits or signal interference. The through hole 4 in the middle can serve as a dedicated channel for the wire harnesses. All thermometer wire harnesses pass through the through hole 4 and are centrally collected, avoiding direct contact and friction between the wire harnesses and external structures, greatly reducing the risk of wire harness damage and ensuring the stability of signal transmission. At the same time, the centralized wiring through the through hole 4 keeps the wire harnesses away from the thermometer sensing section and the measured area, spatially isolating the wire harnesses from physical interference with the temperature measurement process and ensuring the accuracy of the temperature measurement data.

[0022] The fixture body 1 is provided with a connecting hole 5, and a bolt is installed in the connecting hole 5. The fixture body 1 is fixed to the external structure by the bolt. The connecting hole 5 is the connection hub between the thermometer mounting vibration fixture and the external structure, which solves the problems of reliable connection and balanced force under vibration. The bolt connection method can provide a strong fixing force for the fixture body 1, while also having the characteristics of being detachable and adjustable, so that the fixture and the external equipment form a rigid connection, preventing the fixture from shifting as a whole under vibration, and allowing for flexible adjustment of the fixing angle and position of the fixture.

[0023] The connecting holes 5 are located at the four corners of the clamp body 1, on the outside of the silicone rubber material 3. The position of the connecting holes 5 avoids the thermometer trap 2 and the filling layer, which can prevent damage to the structure of the thermometer trap 2 and the silicone rubber material 3 during drilling and connection (such as causing the trap wall to crack or be deformed by compression), and ensure that the accurate positioning function of the thermometer trap 2 for the thermometer is not affected. At the same time, they are symmetrically distributed along the center of gravity of the clamp. When the clamp is fixed to the external structure by bolts, the preload of the bolts will be evenly applied to the four symmetrical points of the clamp, forming a balanced force closed loop, avoiding local stress concentration of the clamp due to the offset of the force points (such as the clamp warping or bending caused by excessive force on one side).

[0024] The fixture body 1 has a frame-like structure, including an upper clamping plate 7 and a lower clamping plate 8, which are fastened together by a connecting component 6. The frame-like structure design ensures sufficient structural strength for the fixture, preventing deformation under vibration and providing a stable support for the thermometer and other components. Furthermore, the hollow area of ​​the frame provides ample space for the placement of the thermometer, the handling of filling materials, and thermal interaction with the object being measured. This facilitates installation, maintenance, and heat transfer during temperature measurement. It also reduces the contact area between the fixture body 1 and the thermometer, preventing additional thermal interference to the thermometer's sensing section caused by temperature changes in the fixture body 1 (such as ambient temperature fluctuations).

[0025] The connecting component 6 includes screws, and screw holes are provided at corresponding positions on the upper clamping plate 7 and the lower clamping plate 8. During the screw fixing process, the pre-tightening force makes the two clamping plates fit tightly together, forming an elastic wrapping and fixing of the thermometer. At the same time, the rigid constraint after the fit and the buffering effect of the sealing layer reduce the transmission of vibration to the thermometer, prevent the platinum resistance wire from breaking due to impact, protect the temperature sensing section from stable contact with the object being measured, and ensure temperature measurement accuracy. At the same time, the detachable nature of the screw connection allows the clamping plates to be opened and closed flexibly. When it is necessary to replace the thermometer or perform maintenance, only the screws need to be removed to open the clamping plates without damaging the overall structure of the fixture, thus reducing maintenance costs.

[0026] The thermometer traps 2 are arranged in multiple groups, with each group consisting of multiple thermometer traps 2 arranged in parallel. The multi-group design allows each group of thermometer traps 2 to correspond to a measured area, and the multiple parallel thermometer traps 2 within each group can be used to deploy multiple thermometers in the same area, achieving dual coverage of area grouping and multiple measurement points in the same area. Without the need for additional sets of clamps, it can complete all-round temperature acquisition of complex equipment. Compared with the single-group design, the temperature measurement coverage range is expanded several times, greatly improving monitoring efficiency.

[0027] The thermometer trap 2 is a cylindrical groove with a diameter of φ3.4mm. The shape of the cylindrical groove is compatible with the shape of common thermometers with cylindrical sensing sections, allowing the sensing part of the thermometer to fit well with the inner wall of the trap, ensuring tight contact. The diameter of φ3.4mm is precisely designed to match the outer diameter of the thermometer to be installed, ensuring that the thermometer can be smoothly inserted into the trap. The size adaptation also enables the initial radial positioning of the thermometer, reducing the displacement deviation of the thermometer in the radial direction. This provides a precise positioning prerequisite for the subsequent filling and fixing of GD414 silicone rubber, making the thermometer more firmly fixed and more accurately positioned after filling.

[0028] The silicone rubber material 3 is GD414 single-component room temperature vulcanizing silicone rubber. GD414 single-component room temperature vulcanizing silicone rubber has three key characteristics suitable for vibration clamping requirements: wide temperature range stability; high elasticity and fatigue resistance; and good adhesion and filling properties. GD414 silicone rubber achieves a firm fixation of the thermometer through a triple mechanism of "wrapping-buffering-limiting", which is suitable for the anti-loosening requirements in vibration scenarios.

[0029] While embodiments or examples of this disclosure have been described with reference to the accompanying drawings, it should be understood that the above embodiments are merely exemplary embodiments or examples, and the scope of this utility model is not limited by these embodiments or examples, but only by the granted claims and their equivalents. Various elements in the embodiments or examples may be omitted or replaced by their equivalents. Furthermore, the steps may be performed in a different order than that described in this disclosure. Further, various elements in the embodiments or examples may be combined in various ways. Importantly, as the technology evolves, many elements described herein can be replaced by equivalents that appear after this disclosure.

Claims

1. A vibration fixture for a precision platinum resistance thermometer, characterized in that, The device includes a clamp body, which has an internal installation space containing multiple thermometer traps for positioning thermometers, with silicone rubber material filling the spaces between the thermometer traps.

2. The vibration fixture for a precision platinum resistance thermometer according to claim 1, characterized in that, The clamp body has a through hole in the middle.

3. The vibration fixture for a precision platinum resistance thermometer according to claim 1, characterized in that, The clamp body is provided with a connecting hole, and a bolt is provided in the connecting hole. The clamp body is installed and fixed to the external structure by the bolt.

4. The vibration fixture for a precision platinum resistance thermometer according to claim 3, characterized in that, The connection holes are located at the four corners of the clamp body, on the outside of the silicone rubber material.

5. The vibration fixture for a precision platinum resistance thermometer according to claim 1, characterized in that, The clamp body has a frame-shaped structure, including an upper clamping plate and a lower clamping plate, which are fastened together by a connecting component.

6. The vibration fixture for a precision platinum resistance thermometer according to claim 5, characterized in that, The connecting assembly includes screws, and screw holes are provided at corresponding positions on the upper and lower clamping plates.

7. The vibration fixture for a precision platinum resistance thermometer according to claim 1, characterized in that, The thermometer traps are provided in multiple groups, and each group includes multiple thermometer traps arranged in parallel.

8. The vibration fixture for a precision platinum resistance thermometer according to claim 1, characterized in that, The thermometer trap is a cylindrical groove with a diameter of φ3.4mm.

9. A vibration fixture for a precision platinum resistance thermometer according to claim 1, characterized in that, The silicone rubber material used is GD414 single-component room temperature vulcanized silicone rubber.

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