Temperature measuring device based on expansion joint
By designing a hoop structure on the expansion joint to fix the temperature measurement unit, and using insulation materials and extended connection structures, the problem of temperature measurement between the peak and the trough of the outer surface of the expansion joint is solved, and accurate and real-time monitoring of the temperature of the expansion joint is achieved. .
Patent Information
- Application Number
- CN202421115001.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The prior art is difficult to achieve accurate temperature measurements on special structures such as expansion joints, where the outer surface changes, especially in temperature measurements between peaks and troughs.
A temperature measurement device based on an expansion joint is designed. A hoop structure is used to fix the temperature measurement unit in the trough of the expansion joint, and the tightness of the hoop fastener is adjusted to match the expansion joint and the temperature measurement unit. At the same time, the temperature measurement unit is wrapped with insulation material to avoid temperature loss, and the temperature transmission meter is installed away from the expansion joint through an extended connection structure.
It realizes real-time measurement and monitoring of the temperature between the expansion joint's peak and trough, avoids the impact of the expansion joint's deformation on the temperature measurement, and reduces the impact of environmental factors on the temperature measurement results.
Smart Images
Figure CN222379217U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of thermocouple and thermal resistor temperature measurement, and more specifically relates to a device used for temperature measurement of expansion joints. Background Art
[0002] Thermocouples are commonly used temperature testing instruments, often used in various occasions or reaction devices that require temperature control, such as chemical reactors, sintering furnaces, etc. In most cases, thermocouples are used in an inserted manner, that is, the thermocouple as a whole or the thermocouple temperature measuring end or the temperature measuring core is installed in chemical reactors, sintering furnaces and other equipment to monitor the temperature of the temperature-measured part. However, in some special fields or some special locations, it is required to monitor the temperature of the surface (or outer surface). In this case, the temperature sensor (ie, thermocouple) is required to be set on the surface to be measured to achieve temperature measurement. However, for the measurement of outer surface temperature, how to install it firmly and accurately test the temperature is a major problem facing the industry.
[0003] The prior art "clamp-type surface temperature sensor" (application number 2015200885522, application date February 9, 2015, authorization announcement date June 3, 2015) proposes a clamp-type structure for measuring the temperature of the outer surface of the pipeline, but this structure is a thermocouple with a relatively fixed temperature measurement position, and can only achieve single-point measurement on the circumference, which cannot meet the increasingly diverse requirements of customers in actual use. Our company's R&D team has been committed to the temperature measurement thermocouples on the inner and outer surfaces of customers' pipelines, and launched the "slide rail clamp-type thermocouple" (application number 202220088540X, application date January 13, 2022, authorization announcement date October 28, 2022), forming a sliding track between different clamps, and the sliding base can slide freely along the sliding track, so that the temperature measurement component can be adjusted in different measurement processes by adjusting the position of the temperature measurement component on the clamp, so that it can achieve the purpose of measuring the temperature of different positions on the surface of the pipeline and equipment in different measurement processes. At the same time, for the tube-in-tube structure composed of multiple pipes (the distance between the pipes is small), or the internal pipes in the casing structure, due to the lack of installation space in engineering practice, our company's R&D team has developed a "pipeline outer surface temperature measurement mounting bracket and a thermocouple using this bracket" (application number is 202410189592X, and the application date is February 20, 2024). A smaller mounting bracket is used to achieve temperature measurement and / or monitoring of the outer surface of the pipe, which is convenient to use.
[0004] Regardless of which of the above-mentioned measuring surfaces the thermocouples are used, they are all aimed at the outside of the pipe. This outer surface remains basically unchanged during use and generally does not have defects such as large pits. However, for the special structure of the expansion joint, whose outer surface will change, there is a lack of temperature measuring devices that meet the requirements of engineering practice. Utility Model Content
[0005] The utility model aims to overcome the deficiencies of the prior art and provide a temperature measuring device based on an expansion joint.
[0006] The technical purpose of the utility model is achieved through the following technical solutions.
[0007] The temperature measuring device based on the expansion joint includes a clamp and a temperature measuring unit, wherein:
[0008] A temperature measuring unit is set between the wave crest and the wave trough of the expansion joint, and a clamp is used to fix the temperature measuring unit in the wave trough to realize the temperature collection of the position to be measured;
[0009] A clamp fastener is provided on the clamp, and the tightness of the clamp is adjusted by the clamp fastener to match the expansion joint and the temperature measuring unit.
[0010] In the above technical solution, the temperature measuring unit is an armored thermocouple or a thermal resistor, the temperature signal used by the temperature measuring unit is transmitted through a subsequent signal line, and the temperature measuring unit is connected to the temperature transmission meter head through a connecting structure.
[0011] In the above technical solution, the connecting structure is extended in the length direction, and a fire-resistant and flame-retardant sleeve is arranged on the outside thereof.
[0012] In the above technical solution, the temperature transmission meter head is installed at a mounting structure far away from the temperature expansion joint to be measured. The mounting structure includes a mounting frame and a mounting plate. The mounting plate adopts a plate-like structure with an inverted L-shaped cross-section. A U-shaped opening is opened on the upper surface of the mounting plate. The temperature transmission meter head is arranged at the U-shaped opening. The side wall of the mounting plate is mounted on the mounting frame by means of clamps and nuts.
[0013] In the above technical solution, a temperature signal transmission interface is formed on the side of the temperature transmission meter head, which is used to transmit the temperature signal obtained by the temperature transmission meter head to the display system.
[0014] In the above technical solution, a heat-insulating material with a certain elasticity, such as heat-insulating cotton, is arranged between the peaks and troughs of the expansion joint, and can expand or compress as the distance between the peaks and troughs changes, and always fits the temperature measuring unit and the peaks and troughs in this process, so that the temperature measuring unit can measure and monitor the temperature between the peaks and troughs in real time. The temperature measuring unit is wrapped with heat-insulating material to avoid temperature loss and errors; when the temperature measuring unit is in contact with the bottom of the trough, heat-insulating material is arranged on the temperature measuring unit; when it is necessary to measure the temperature in the trough between adjacent peaks, heat-insulating material is arranged in the trough of adjacent peaks, and then the temperature measuring unit is arranged in the heat-insulating material, that is, heat-insulating material is arranged between the temperature measuring unit and the adjacent peaks, and heat-insulating material is arranged between the temperature measuring unit and the troughs.
[0015] By adopting the technical solution of the utility model, a clamp structure is used to achieve matching between the temperature measuring unit and the expansion joint to be measured, thereby avoiding the influence of temperature measurement caused by deformation of the expansion joint; and according to the situation, the temperature transmission head can be installed at the U-shaped opening of the mounting frame using an extended connection structure, so that the temperature transmission head is installed at a position away from the expansion joint, thereby avoiding the influence of many environmental factors. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of an expansion joint in the prior art.
[0017] Figure 2 It is a structural schematic diagram (1) of the utility model.
[0018] Figure 3 It is a structural schematic diagram (2) of the utility model.
[0019] Among them, 1 is an expansion joint, 1-1 is a trough, 1-2 is a peak, 2 is a temperature signal transmission interface, 3 is a connecting structure, 4 is a temperature measuring unit, 5 is a clamp, 6 is a clamp fastener, 7 is a mounting frame, 8 is a mounting plate, 9 is a temperature transmission head, 10 is a clamp, 11 is a U-shaped opening, 12 is a nut, and 13 is thermal insulation cotton.
[0020] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION
[0021] The technical solution of the present utility model is further described below in conjunction with specific embodiments.
[0022] like Figure 1 As shown, the outer surface of the expansion joint 1 has a trough 1-1 and a peak 1-2 structure. The thermocouples for measuring the outer surface of the pipeline listed in the background technology can only be used for the positions on the outer surface of the expansion joint where there are no peaks and troughs, and cannot measure the temperature between the "peaks and troughs". In addition, since the expansion joint is deformed along the radius and / or length (axial direction) in actual use, these situations need to be considered when measuring and / or monitoring the temperature between the "peaks and troughs".
[0023] The expansion joint temperature measuring device of this embodiment can realize the measurement of the temperature between the peak and the trough, and avoid the influence of the expansion joint deformation. Figure 2 and 3 shown.
[0024] The temperature measuring device based on the expansion joint adopts a clamp type design. A temperature measuring unit of the temperature measuring device is arranged between the peak and the trough of the expansion joint, and the temperature measuring unit is fixed in the trough, such as the bottom of the trough, with a clamp to realize temperature collection of the position to be measured. A clamp fastener is arranged on the clamp to adjust the tightness of the clamp through the clamp fastener to match the expansion joint and the temperature measuring unit. The clamp design refers to the Chinese utility model patent "Sliding rail clamp type thermocouple" (application date is January 13, 2022, application number is 202220088540X, and authorization announcement date is October 28, 2022).
[0025] Insulation material with a certain elasticity, such as insulation cotton, is set between the peaks and troughs of the expansion joint. It can expand or compress as the distance between the peaks and troughs changes, and always fits the temperature measuring unit and the peaks and troughs during this process. In this way, the temperature measuring unit can measure and monitor the temperature between the peaks and troughs in real time. The temperature measuring unit is wrapped with insulation material to avoid temperature loss and errors; when the temperature measuring unit is in contact with the bottom of the trough, insulation material is set on the temperature measuring unit; when it is necessary to measure the temperature in the trough between adjacent peaks, insulation material is set in the trough of adjacent peaks, and then the temperature measuring unit is set in the insulation material, that is, insulation material is set between the temperature measuring unit and the adjacent peaks, and insulation material is set between the temperature measuring unit and the trough.
[0026] The temperature measuring unit is an armored thermocouple or thermal resistor, which uses temperature signals and transmits them through subsequent signal lines. The temperature measuring unit is connected to the temperature transmission head 9 through a connecting structure 3, and the connecting structure 3 also protects the internal signal lines.
[0027] Here, the connection structure 3 adopts the connection structure of the previous thermocouple, such as the protective sleeve and the anti-leakage device. For the practical use environment, if the space is small and the temperature display mechanism cannot be installed, or there are interference factors such as high temperature and strong current on site, when the temperature signal needs to be transmitted to a distant place, the connection structure 3 is extended in the length direction, and a fire-retardant sleeve is set on its outside. The selected working temperature is -75-350℃, the instantaneous temperature resistance can reach 1600℃, and the rated voltage is 7-25KV. It has the functions of fire prevention, flame retardancy, heat insulation, insulation, anti-aging, anti-molten steel splashing, waterproof, oil-proof and acid-alkali resistance, and is purchased from China Electric New Materials.
[0028] The temperature transmission meter head is installed at the installation structure far away from the expansion joint to be measured. The installation structure includes a mounting frame 7 and a mounting plate 8. The mounting plate 8 adopts a plate-like structure with an inverted L-shaped cross section. A U-shaped opening 11 is opened on the upper surface of the mounting plate 8. The temperature transmission meter head is arranged at the U-shaped opening 11. The side wall of the mounting plate 8 is installed on the mounting frame 7 through a clamp 10 and a nut 12. A temperature signal transmission interface 2 is formed on the side of the temperature transmission meter head, which is used to transmit the temperature signal obtained by the temperature transmission meter head to the display system.
[0029] The technical solution of this embodiment is adopted, and the clamp structure is used to achieve the matching of the temperature measuring unit and the expansion joint to be measured, so as to avoid the influence of temperature measurement caused by the deformation of the expansion joint; at the same time, the temperature transmission head is installed at the U-shaped opening of the mounting frame 7 by using the extended connection structure 3, so that the temperature transmission head is installed at a position far away from the expansion joint, so as to avoid the influence of many environmental factors. The mounting plate 8 is installed on the mounting frame 7 by using the clamp 10 and the nut 12, so as to facilitate the adjustment of the relative height of the mounting plate 8 on the mounting frame 7.
[0030] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of an element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or located in other orientations), and the spatial relative description used here can be interpreted accordingly. Moreover, relational terms such as "first" and "second" are only used to distinguish one from another component with the same name, and do not necessarily require or imply that there is any such actual relationship or order between these components.
[0031] The above is an exemplary description of the present invention. It should be noted that, without departing from the core of the present invention, any simple deformation, modification or other equivalent replacement that can be done by other technical personnel in this field without expending creative labor falls within the protection scope of the present invention.
Claims
1. A temperature measuring device based on an expansion joint, characterized in that: It includes a clamp and a temperature measuring unit, wherein: a temperature measuring unit is arranged between the wave crest and the wave trough of the expansion joint, and the temperature measuring unit is fixed in the wave trough by using the clamp to realize temperature collection of the position to be measured; a clamp fastener is arranged on the clamp, and the tightness of the clamp is adjusted by the clamp fastener to match the expansion joint and the temperature measuring unit; and a thermal insulation material is arranged between the wave crest and the wave trough of the expansion joint.
2. The temperature measuring device based on the expansion joint according to claim 1 is characterized in that: The temperature measuring unit is an armored thermocouple or a thermal resistor.
3. The temperature measuring device based on the expansion joint according to claim 1 or 2, characterized in that: The thermal insulation material is thermal insulation cotton.
4. The temperature measuring device based on the expansion joint according to claim 3 is characterized in that: When the temperature measuring unit is in contact with the bottom of the trough, a heat-insulating material is arranged on the temperature measuring unit; Alternatively, a heat-insulating material is arranged between the temperature-measuring unit and the adjacent wave crests, and a heat-insulating material is arranged between the temperature-measuring unit and the wave troughs.
5. The temperature measuring device based on the expansion joint according to claim 1 or 2, characterized in that: The temperature signal adopted by the temperature measuring unit is transmitted through a subsequent signal line, and the temperature measuring unit is connected to the temperature transmission meter head through a connecting structure.
6. The temperature measuring device based on expansion joint according to claim 5 is characterized in that: A temperature signal transmission interface is formed on the side of the temperature transmission meter head, which is used to transmit the temperature signal obtained by the temperature transmission meter head to the display system.
7. The temperature measuring device based on the expansion joint according to claim 1 or 2, characterized in that: The connecting structure is extended in the length direction, and a fire-retardant sleeve is arranged on the outside thereof.
8. The temperature measuring device based on expansion joint according to claim 3 is characterized in that: The connecting structure is extended in the length direction, and a fire-retardant sleeve is arranged on the outside thereof.
9. The temperature measuring device based on expansion joint according to claim 5, characterized in that: The connecting structure is extended in the length direction, and a fire-retardant sleeve is arranged on the outside thereof.
10. The temperature measuring device based on expansion joint according to claim 5, characterized in that: The temperature transmission meter head is installed at a mounting structure far away from the expansion joint to be measured. The mounting structure includes a mounting frame and a mounting plate. The mounting plate adopts a plate-like structure with an inverted L-shaped cross-section. A U-shaped opening is opened on the upper surface of the mounting plate. The temperature transmission meter head is set at the U-shaped opening. The side wall of the mounting plate is installed on the mounting frame through a clamp and a nut.
11. The temperature measuring device based on expansion joint according to claim 6, characterized in that: The temperature transmission meter head is installed at a mounting structure far away from the expansion joint to be measured. The mounting structure includes a mounting frame and a mounting plate. The mounting plate adopts a plate-like structure with an inverted L-shaped cross-section. A U-shaped opening is opened on the upper surface of the mounting plate. The temperature transmission meter head is set at the U-shaped opening. The side wall of the mounting plate is installed on the mounting frame through a clamp and a nut.
12. The temperature measuring device based on expansion joint according to claim 7, characterized in that: The temperature transmission meter head is installed at a mounting structure far away from the expansion joint to be measured. The mounting structure includes a mounting frame and a mounting plate. The mounting plate adopts a plate-like structure with an inverted L-shaped cross-section. A U-shaped opening is opened on the upper surface of the mounting plate. The temperature transmission meter head is set at the U-shaped opening. The side wall of the mounting plate is installed on the mounting frame through a clamp and a nut.
13. The temperature measuring device based on expansion joint according to claim 8 or 9, characterized in that: The temperature transmission meter head is installed at a mounting structure far away from the expansion joint to be measured. The mounting structure includes a mounting frame and a mounting plate. The mounting plate adopts a plate-like structure with an inverted L-shaped cross-section. A U-shaped opening is opened on the upper surface of the mounting plate. The temperature transmission meter head is set at the U-shaped opening. The side wall of the mounting plate is installed on the mounting frame through a clamp and a nut.