Fixing device for measuring temperature of boiler tube
By designing a fixing device including protective sleeves, threaded joints and welding blocks, the problem of insecure installation of thermocouples in boiler furnace tube temperature measurement is solved, and the thermocouples are installed stably during long-term operation to ensure measurement accuracy and normal operation of the boiler.
Patent Information
- Application Number
- CN202311450107.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-02
- Publication Date
- 2025-05-06
AI Technical Summary
In the prior art, when measuring the temperature of the boiler furnace tube, the thermocouple is not installed firmly and is prone to loosening or falling off during long-term operation, resulting in low measurement accuracy and the inability to obtain the boiler furnace tube temperature and combustion conditions in a timely and correctly, resulting in the boiler shutdown multiple times.
A fixed device for temperature measurement of boiler furnace tubes is designed, including protective sleeves, threaded joints and welding blocks, which are welded and fixed with boiler furnace tubes through welding blocks, and a through hole for thermocouple installation is provided in the welding block to ensure the thermocouple is securely installed.
During the long-term operation of the boiler, the thermocouple can be installed stably and firmly on the boiler furnace tube to avoid loosening or falling off, ensure the accuracy of temperature measurement, and obtain the boiler furnace tube temperature and combustion conditions in a timely manner to avoid shutdown caused by pipe temperature failure.
Smart Images
Figure CN119935331A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of temperature measuring instruments and relates to a fixing device for measuring the temperature of a boiler tube. Background Art
[0002] The steam injection boiler in the oil field is an important equipment for oil and gas production. The measurement accuracy of various temperature measuring instruments is related to the normal, safe and stable operation of the boiler. Among them, the parameter of boiler tube temperature can directly indicate the temperature of the boiler tube, and can also indirectly reflect the good or bad boiler combustion conditions and the scaling of the boiler tube. Whether the temperature of the tube is normal determines the safety and economy of the boiler operation. However, the thermocouples for measuring the boiler tube are not installed in a standardized manner. They are very easy to loosen and fall off during the long-term operation of the boiler. The protective jacket of the thermocouple is not in full contact with the boiler tube, resulting in low accuracy in the measurement of the boiler tube temperature. The boiler tube temperature and the boiler combustion conditions cannot be obtained in a timely and correct manner, which ultimately leads to multiple boiler shutdowns due to tube temperature failures. Summary of the invention
[0003] The present invention provides a fixing device for measuring the temperature of a boiler tube, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that when measuring the temperature of a boiler tube, the thermocouple is not firmly installed and is very easy to loosen or fall off during the long-term operation of the boiler, resulting in low accuracy in measuring the temperature of the boiler tube.
[0004] The technical scheme of the present invention is realized by the following measures: a fixing device for measuring the temperature of a boiler tube, comprising a protective sleeve, a threaded joint and a welding block, the protective sleeve is horizontally arranged left and right, the left end of the protective sleeve is fixedly connected to the welding block, the right end of the protective sleeve is fixedly connected to the threaded joint, the inner hole of the threaded joint is a two-stage step hole with a small left end and a large right end, the right end of the inner hole of the protective sleeve is connected to the left end of the small hole section of the threaded joint, a blind hole with a closed left end and a right end connected to the inner hole of the protective sleeve is provided inside the welding block, the central axes of the inner hole of the protective sleeve, the small hole section of the threaded joint and the blind hole are collinear, the inner hole of the protective sleeve, the small hole section of the threaded joint and the blind hole have the same aperture, the blind hole, the inner hole of the protective sleeve and the inner hole of the threaded joint constitute an installation through hole for installing a thermocouple, and the inner wall of the large hole section of the threaded joint is provided with an internal thread for threaded connection with the thermocouple.
[0005] The following are further optimizations and / or improvements to the above invention: The welding block may be a fan-shaped structure axially arranged in the left-right direction, and the inner diameter of the welding block is adapted to the outer diameter of the boiler tube.
[0006] The welding block may be a fan-shaped structure axially arranged along the front-rear direction, and the inner diameter of the welding block is adapted to the outer diameter of the boiler tube.
[0007] The central angle of the welding block may be 20 degrees to 180 degrees.
[0008] The central angle of the welding block may be 60 degrees.
[0009] The outer contour of the threaded joint may be a regular hexagon.
[0010] The invention has a reasonable structure, the welding block is welded and fixed to the boiler furnace tube and the two are in full contact, and the thermocouple is threadedly installed in the installation through hole, thereby ensuring that during the long-term operation of the boiler, the thermocouple can always be firmly and stably installed on the boiler furnace tube without loosening or falling off, and the temperature of the boiler furnace tube can be accurately measured. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Attached Figure 1 It is a schematic diagram of the front cross-sectional structure of the first embodiment of the present invention.
[0012] Attached Figure 2 It is a right view structural schematic diagram of embodiment 1 of the present invention.
[0013] Attached Figure 3 It is a schematic diagram of the front cross-sectional structure of the second embodiment of the present invention.
[0014] Attached Figure 4 It is a schematic diagram of the top structure of the second embodiment of the present invention.
[0015] The codes in the accompanying drawings are: 1 is a protective sleeve, 2 is a threaded joint, 3 is a welding block, 4 is an inner hole of the protective sleeve, 5 is an inner hole of the threaded joint, 6 is a blind hole, and 7 is an internal thread. DETAILED DESCRIPTION
[0016] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.
[0017] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.
[0018] The present invention will be further described below in conjunction with embodiments and drawings: Embodiment 1: As shown in the attached Figure 1-2As shown, the fixing device for measuring the temperature of the boiler tube comprises a protective sleeve 1, a threaded joint 2 and a welding block 3. The protective sleeve 1 is horizontally arranged left and right. The left end of the protective sleeve 1 is fixedly connected to the welding block 3, and the right end of the protective sleeve 1 is fixedly connected to the threaded joint 2. The inner hole 5 of the threaded joint is a two-stage step hole with a small left end and a large right end. The right end of the inner hole 4 of the protective sleeve is connected to the left end of the small hole section of the threaded joint 2. A blind hole 6 is provided inside the welding block 3, the left end of which is closed and the right end is connected to the inner hole 4 of the protective sleeve. The central axes of the inner hole 4 of the protective sleeve, the small hole section of the threaded joint 2 and the blind hole 6 are collinear, the apertures of the inner hole 4 of the protective sleeve, the small hole section of the threaded joint 2 and the blind hole 6 are the same, the blind hole 6, the inner hole 4 of the protective sleeve and the inner hole 5 of the threaded joint constitute an installation through hole for the thermocouple to be installed, and the inner wall of the large hole section of the threaded joint 2 is provided with an internal thread 7 for threaded connection with the thermocouple; the welding block 3 is a fan-shaped structure axially arranged in the left-right direction, and the inner diameter of the welding block 3 is adapted to the outer diameter of the boiler tube.
[0019] When in use, first, the inner wall surface of the welding block 3 and the outer avoidance surface of the boiler tube are tightly fitted together, and then the welding block 3 and the boiler tube are welded and fixed together, and then the thermocouple is inserted into the installation through hole and threadedly connected with the threaded joint 2 through the internal thread 7, thereby ensuring that during the long-term operation of the boiler, the thermocouple can always be firmly and stably installed on the boiler tube without loosening or falling off, and the welding block 3 is in full contact with the boiler tube and has a good thermal conductivity, so the thermocouple located in the installation through hole can accurately measure the temperature of the boiler tube. In addition, the thermocouple is installed in this application through threads, which is convenient for disassembly and inspection; furthermore, the axial direction of the welding block 3 in this embodiment is parallel to the length direction of the protective sleeve 1, so when the welding block 3 is welded to the outer wall surface of the boiler tube, the length direction of the protective sleeve 1 is parallel to the axial direction of the boiler tube, that is, there is no need to require that sufficient installation space must be left on both sides of the boiler tube at the installation site.
[0020] The above embodiments may be further optimized and / or improved according to actual needs: Preferably, the central angle of the welding block 3 is 20 degrees to 180 degrees. Specifically, the central angle of the welding block 3 is 60 degrees.
[0021] As attached Figure 1-2 As shown, specifically, the outer contour of the threaded joint 2 is a regular hexagon.
[0022] Embodiment 2: As shown in the attached Figure 3-4As shown, the difference between this embodiment and the first embodiment is that the welding block 3 is a fan-shaped ring structure arranged axially along the front-back direction, and the inner diameter of the welding block 3 is adapted to the outer diameter of the boiler tube. The axial direction of the welding block 3 in this embodiment is perpendicular to the length direction of the protective sleeve 1, so when the welding block 3 is welded to the outer wall surface of the boiler tube, the length direction of the protective sleeve 1 is perpendicular to the axial direction of the boiler tube, that is, there is no need to require that sufficient installation space must be reserved in the axial direction of the boiler tube at the installation site.
[0023] The above technical features constitute the best embodiment of the present invention, which has strong adaptability and best implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.
Claims
1. A fixing device for measuring boiler tube temperature, characterized in that The utility model comprises a protective sleeve, a threaded joint and a welding block. The protective sleeve is horizontally arranged left and right. The left end of the protective sleeve is fixedly connected to the welding block, and the right end of the protective sleeve is fixedly connected to the threaded joint. The inner hole of the threaded joint is a two-stage stepped hole with a small left end and a large right end. The right end of the inner hole of the protective sleeve is connected to the left end of the small hole section of the threaded joint. A blind hole with a closed left end and a right end connected to the inner hole of the protective sleeve is arranged inside the welding block. The central axes of the inner hole of the protective sleeve, the small hole section of the threaded joint and the blind hole are collinear. The apertures of the inner hole of the protective sleeve, the small hole section of the threaded joint and the blind hole are the same. The blind hole, the inner hole of the protective sleeve and the inner hole of the threaded joint constitute an installation through hole for installing a thermocouple, and the inner wall of the large hole section of the threaded joint is provided with an internal thread for threaded connection with the thermocouple.
2. The fixing device for measuring the temperature of a boiler tube according to claim 1, characterized in that The welding block is a fan-shaped ring structure axially arranged in the left-right direction, and the inner diameter of the welding block is matched with the outer diameter of the boiler tube.
3. The fixing device for measuring boiler tube temperature according to claim 1 is characterized in that The welding block is a fan-shaped ring structure axially arranged along the front-rear direction, and the inner diameter of the welding block is matched with the outer diameter of the boiler tube.
4. The fixing device for measuring boiler tube temperature according to claim 1, 2 or 3, characterized in that The central angle of the welding block is 20 degrees to 180 degrees.
5. The fixing device for measuring the temperature of a boiler tube according to claim 4, characterized in that The central angle of the welding block is 60 degrees.
6. The fixing device for measuring boiler tube temperature according to claim 1, 2, 3 or 5, characterized in that The outer contour of the threaded joint is a regular hexagon.
7. The fixing device for measuring the temperature of a boiler tube according to claim 4, characterized in that The outer contour of the threaded joint is a regular hexagon.