High-temperature flue gas temperature measuring device
By combining thermocouples, protective sleeves, and anti-sway mechanisms, the continuity and stability issues of the flue gas temperature measurement device in high-temperature environments are solved, achieving high-precision temperature measurement and safe connection.
Patent Information
- Application Number
- CN202423297200.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing flue gas temperature measuring devices cannot perform continuous measurements for extended periods in power plant boilers. They also suffer from low measurement accuracy, are prone to wear, are difficult to install and maintain, and have insufficient connection stability.
The device employs a combined design of thermocouples, protective sleeve mechanism, sealing mechanism and anti-sway mechanism. Through the multi-stage connection of the protective sleeve mechanism and the non-welded fixation of the anti-sway mechanism, the stability and sealing performance of the device are ensured in high-temperature environments.
It improves the continuity and accuracy of flue gas temperature measurement, enhances the safety and connection stability of the device, avoids damage caused by thermal expansion and flue gas flow, and ensures long-term operation of the measuring equipment.
Smart Images
Figure CN223581208U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of measurement, and in particular to a high-temperature flue gas temperature measuring device. Background Technology
[0002] Flue gas temperature measurement devices are used in various fields, including industrial boilers, waste incinerators, cigarette manufacturing, and power generation. These devices are designed and applied to accurately monitor and control flue gas temperature to ensure safe equipment operation and improve energy efficiency. Especially in the industrial boiler sector, flue gas temperature is one of the most important parameters for boiler operation.
[0003] In existing technologies, flue gas temperature measurement has low accuracy, is prone to wear when installed inside the boiler, and cannot be continuously measured for extended periods. Furthermore, its connection to the boiler lacks stability. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] The problem to be solved by this utility model is to provide a high-temperature flue gas temperature measuring device to overcome the technical problems in the prior art that the high-temperature flue gas temperature of power plant boilers cannot be continuously measured for a long time, the measurement method is prone to equipment wear, and the original measuring equipment is difficult to install and maintain.
[0006] (II) Technical Solution
[0007] To solve the aforementioned technical problem, this utility model provides a high-temperature flue gas temperature measuring device, comprising:
[0008] Thermocouple;
[0009] A protective sleeve mechanism, wherein the thermocouple is disposed in the protective sleeve mechanism;
[0010] A sealing mechanism, comprising an upper flange, a lower flange, a sealing head, and a support box, wherein the upper flange is connected to the lower flange, the sealing head is cylindrical and one end of the sealing head is connected to the upper flange, and the support box is disposed at the lower end of the lower flange. The upper flange, the lower flange, and the support box all have openings at their centers, and the protective sleeve mechanism is inserted into the openings.
[0011] An anti-sway mechanism is provided, which is connected to the protective sleeve mechanism via a fixing block.
[0012] As described above, in the high-temperature flue gas temperature measuring device, optionally, the protective sleeve mechanism includes a long pipe and a short pipe, and there are multiple protective sleeve mechanisms connected in sequence. The long pipe in the first protective sleeve mechanism is welded to the upper flange, and the short pipe in the first protective sleeve mechanism is welded to the lower flange.
[0013] As described above, for the high-temperature flue gas temperature measuring device, optionally, when every two of the protective sleeve mechanisms (4) are connected, the short tube is sleeved on the long tube, the upper end of the short tube and the long tube are fixed by thread, and the lower end of the short tube and the long tube are fixed by welding.
[0014] As described above, for the high-temperature flue gas temperature measuring device, optionally, the long tube in the first protective sleeve mechanism is enlarged near the upper flange end.
[0015] As described above, the high-temperature flue gas temperature measuring device may optionally have multiple outlets at the top of the sealing head, with the thermocouples leading out from the protective sleeve mechanism and from the outlets.
[0016] As described above, the high-temperature flue gas temperature measuring device may optionally include a support box filled with a high-temperature resistant filling material, and the bottom end of the support box is connected to the roof tube fins.
[0017] As described above, in the high-temperature flue gas temperature measuring device, optionally, both the upper flange and the lower flange are provided with grooves, and sealing material is provided in the grooves.
[0018] As described above, the high-temperature flue gas temperature measuring device may optionally have its protective sleeve mechanism and anti-sway mechanism made of GH3039 or 310S material.
[0019] As described above, the high-temperature flue gas temperature measuring device may optionally include an anti-sway mechanism comprising an outer protective sleeve, an arc guard plate, a long arc plate, and a clamping tube. A heating pipe is provided in the outer protective sleeve, and an arc guard plate and a long arc plate are provided between the outer protective sleeve and the heating pipe. The clamping tube is welded to the long arc plate and clamps the heating pipe.
[0020] As described above, the high-temperature flue gas temperature measuring device may optionally include two clamping tubes, which are respectively disposed at both ends of the outer protective sleeve.
[0021] (III) Beneficial Effects
[0022] The high-temperature flue gas temperature measuring device provided by this utility model has the following beneficial effects:
[0023] (1) This utility model includes a long pipe and a short pipe in the protective sleeve mechanism. The short pipe is welded to the lower flange, and the long pipe is welded to the upper flange. The part of the long pipe that extends beyond the upper flange is enlarged to prevent the weld between the long pipe and the upper flange from breaking during vibration, thus preventing the inner sleeve from falling off and improving safety and connection stability. The number of protective sleeve mechanisms is not fixed and can be determined according to actual needs. By connecting multiple protective sleeve mechanisms, the flue gas temperature monitoring range can be expanded. When two sets of protective sleeve mechanisms are connected, the short pipe of the extended protective sleeve mechanism is sleeved on the extended long pipe. The upper end of the extended short pipe and the original protective sleeve long pipe are first fixed with threads and then welded. The lower end of the extended short pipe and the extended long pipe are fixed by welding. In addition, the protective sleeve mechanism extension scheme can also avoid the difficulty of transporting a single protective sleeve that is too long.
[0024] (2) This utility model has a sealing head connected to the upper flange, and multiple thermocouples are led out from the protective sleeve mechanism to the outer end of the sealing head and locked with bolts. This design ensures the sealing performance.
[0025] (3) This utility model connects the anti-sway mechanism and the protective sleeve mechanism through a fixing block. The two ends of the anti-sway mechanism are tightly fixed to the heating tube, but not welded to the heating tube. One end of the anti-sway mechanism is sleeved on the protective sleeve mechanism, and it is not fixed to the protective sleeve mechanism by welding. When the boiler is started, as the flue gas temperature continues to rise, the protective sleeve mechanism and the heating tube will undergo thermal expansion and can move relative to each other, so that the stress cannot be released and will not cause deformation and damage to the protective sleeve mechanism or the heating tube. The number of anti-sway devices increases accordingly as the protective sleeve mechanism continues to lengthen. The connection method between the anti-sway mechanism and the protective sleeve and the heating tube not only solves the problem of metal material expansion, but also fixes the protective sleeve in a relative position. When the flue gas flow velocity reaches 10 m / s, the protective sleeve will not swing back and forth due to the excessive flue gas flow velocity, which will damage the internal heating surface of the boiler. Attached Figure Description
[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0027] Figure 1 This is a perspective view of a high-temperature flue gas temperature measuring device according to the present invention;
[0028] Figure 2 This is a partial schematic diagram of a high-temperature flue gas temperature measuring device according to the present invention;
[0029] Figure 3 This is a partial cross-sectional view of a high-temperature flue gas temperature measuring device according to the present invention.
[0030] The component names corresponding to the various labels in the figure are: 1. Thermocouple; 3. Sealing mechanism; 31. Upper flange; 32. Lower flange; 33. Sealing head; 34. Support box; 36. Roof tube fins; 4. Protective sleeve mechanism; 41. Long tube; 42. Short tube; 5. Anti-sway mechanism; 51. Outer protective sleeve; 52. Arc guard plate; 53. Long arc plate; 54. Clamping tube; 55. Heated tube; 6. Fixing block. Detailed Implementation
[0031] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0032] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0033] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.
[0034] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0035] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.
[0036] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.
[0037] See Figures 1 to 3 This invention provides a high-temperature flue gas temperature measuring device, comprising: a thermocouple 1, a sealing mechanism 3, a protective sleeve mechanism 4, and an anti-sway mechanism 5. The thermocouple 1 is inserted into the protective sleeve mechanism 4. The sealing mechanism 3 seals the thermocouple 1 and the protective sleeve mechanism 4. The protective sleeve mechanism 4 is fitted onto the thermocouple. The anti-sway mechanism 5 is connected to the protective sleeve mechanism 4. This invention can be used for flue gas temperature measurement in high-temperature environments.
[0038] exist Figures 1 to 3 In an optional embodiment, multiple thermocouples 1 are disposed within a protective sheath mechanism 4. It should be noted that the protective sheath mechanism 4 is made of GH3039 or 310S material. This material can effectively improve the alloy's corrosion resistance, strength, and machinability.
[0039] It should be noted that the number of thermocouples 1 can be selected by those skilled in the art as needed. In this embodiment... Figures 1 to 3 The number of thermocouples is 2.
[0040] Furthermore, the sealing mechanism 3 includes an upper flange 31, a lower flange 32, a sealing head 33, and a support box 34. Specifically, the upper flange 31 is connected to the lower flange 32, the sealing head 33 is cylindrical, one end of the sealing head 33 is connected to the upper flange 31, and the support box 34 is located at the lower end of the lower flange 32. The upper flange 31, the lower flange 32, and the support box 34 all have openings at their centers, and the protective sleeve mechanism 4 is inserted into the openings.
[0041] The upper flange 31 can be connected to the lower flange 32 by threads. Both flanges have grooves, and sealing material is provided in the grooves. The sealing material can be, but is not limited to, packing. The packing is used to improve the sealing performance.
[0042] It is important to note that the long pipe 41 in the first protective sleeve mechanism 4 undergoes a bore enlargement treatment near the upper flange 31. This enlargement treatment effectively prevents the weld between the inner sleeve and the upper flange 31 from breaking during operation due to vibrations.
[0043] To further explain, the enlarged hole can secure the long pipe 41 to the upper flange 31, preventing the long pipe 41 from falling off and damaging the high-temperature heated surface. This enlarged hole is one of the safety protection measures.
[0044] Furthermore, the sealing head 33 is cylindrical, one end of the sealing head 33 is connected to the upper flange 31, and the support box 34 is located at the lower end of the lower flange 32. The upper flange 31, the lower flange 32 and the support box 34 all have openings in their centers, and the protective sleeve mechanism 4 is inserted into the openings.
[0045] Furthermore, the top of the sealing head 33 has multiple outlets, from which multiple thermocouples 1 are led out from the protective sleeve mechanism 4. The thermocouples led out from the outlets can be further secured with bolts.
[0046] Furthermore, the bottom end of the support box 34 is connected to the roof tube fin 36. The roof tube fin 36 is located at the top of the boiler and provides support for the device of this utility model.
[0047] Furthermore, the support box 34 is filled with a high-temperature resistant filler material. The filler material can further enhance the sealing effect.
[0048] exist Figures 1 to 3 In an optional embodiment, the protective sleeve mechanism 4 includes a long pipe 41 and a short pipe 42. There are multiple protective sleeve mechanisms 4, which are connected in sequence. The long pipe 41 in the first protective sleeve mechanism 4 is welded to the upper flange 31, and the short pipe 42 in the first protective sleeve mechanism 4 is welded to the lower flange 32.
[0049] Furthermore, when every two protective sleeve mechanisms 4 are connected, the short pipe 42 is sleeved on the long pipe 41, the upper ends of the short pipe 42 and the long pipe 41 are fixed by threads, and the lower ends of the short pipe 42 and the long pipe 41 are fixed by welding.
[0050] It should be noted that the number of protective sleeve mechanisms 4 is determined by the experimenters in this field based on the actual situation.
[0051] exist Figures 1 to 3 In an optional embodiment, the anti-sway mechanism 5 is connected to the short pipe 42 via a fixing block 6. The anti-sway mechanism 5 is also made of GH3039 or 310S material.
[0052] Furthermore, the anti-sway mechanism 5 includes an outer protective sleeve 51, an arc guard plate 52, a long arc plate 53, and a clamping tube 54. A heated pipe 55 is disposed within the outer protective sleeve 51. The arc guard plate 52 and the long arc plate 53 are located between the outer protective sleeve 51 and the heated pipe 55. The clamping tube 54 is welded to the long arc plate 53 and clamps the heated pipe 55. This effectively improves connection stability.
[0053] Furthermore, there are two clamping tubes 54, which are respectively disposed at both ends of the outer protective sleeve 51.
[0054] Furthermore, the upper flange 31, lower flange 32, sealing head 33, and protective sleeve mechanism 4 are coaxial.
[0055] The specific steps of the high-temperature flue gas temperature measuring device of this utility model are as follows:
[0056] The protective sleeve mechanism 4 includes a long pipe 41 and a short pipe 42. The short pipe 42 is welded to the lower flange 32, and the long pipe 41 is welded to the upper flange 31. The portion of the long pipe 41 extending beyond the upper flange 31 is enlarged to prevent the weld between the long pipe 41 and the upper flange 31 from breaking during vibration, thus preventing the inner sleeve from falling off and improving safety and connection stability.
[0057] Multiple thermocouples 1 are led out from the protective sleeve mechanism 4 to the outer end of the sealing head 33 by a sealing head 33 connected at the upper flange 31, and are locked in place by bolts. This design ensures a tight seal.
[0058] By connecting the anti-sway mechanism 5 to the protective sleeve mechanism 4 via the fixing block 6, the anti-sway mechanism 5 can fix the heating tube 55, which is located inside the furnace. This design can improve the connection stability of the heating tube 55, increase the number of connections, and improve measurement accuracy.
[0059] The same or similar parts between the various embodiments in this specification can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments.
[0060] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A high-temperature flue gas temperature measuring device, characterized in that, include: Thermocouple (1); The protective sleeve mechanism (4) is provided in which the thermocouple (1) is disposed; The sealing mechanism (3) includes an upper flange (31), a lower flange (32), a sealing head (33), and a support box (34). The upper flange (31) is connected to the lower flange (32). The sealing head (33) is cylindrical. One end of the sealing head (33) is connected to the upper flange (31). The support box (34) is located at the lower end of the lower flange (32). The upper flange (31), the lower flange (32), and the support box (34) all have openings in their centers. The protective sleeve mechanism (4) is inserted into the openings. Anti-sway mechanism (5), which is connected to the protective sleeve mechanism (4) via a fixing block (6).
2. The high-temperature flue gas temperature measuring device as described in claim 1, characterized in that, The protective sleeve mechanism (4) includes a long pipe (41) and a short pipe (42). There are multiple protective sleeve mechanisms (4), which are connected in sequence. The long pipe (41) of the first protective sleeve mechanism (4) is welded to the upper flange (31), and the short pipe (42) of the first protective sleeve mechanism (4) is welded to the lower flange (32).
3. The high-temperature flue gas temperature measuring device as described in claim 2, characterized in that, When every two of the protective sleeve mechanisms (4) are connected, the short tube (42) is sleeved on the long tube (41), the upper end of the short tube (42) and the long tube (41) are fixed by thread, and the lower end of the short tube (42) and the long tube (41) are fixed by welding.
4. The high-temperature flue gas temperature measuring device as described in claim 2, characterized in that, The long tube (41) in the first protective sleeve mechanism is enlarged near the end of the upper flange (31).
5. The high-temperature flue gas temperature measuring device as described in claim 1, characterized in that, The top of the sealing head (33) has multiple outlets, and the thermocouple (1) is led out from the protective sleeve mechanism (4). The thermocouple (1) is led out from the outlets.
6. The high-temperature flue gas temperature measuring device as described in claim 1, characterized in that, The support box (34) is filled with a high-temperature resistant filling material, and the bottom end of the support box (34) is connected to the roof tube fin (36).
7. The high-temperature flue gas temperature measuring device as described in claim 1, characterized in that, Both the upper flange (31) and the lower flange (32) are provided with grooves, and sealing material is provided in the grooves.
8. The high-temperature flue gas temperature measuring device as described in claim 1, characterized in that, The protective sleeve mechanism (4) and the anti-sway mechanism (5) are made of GH3039 or 310S material.
9. The high-temperature flue gas temperature measuring device as described in claim 1, characterized in that, The anti-sway mechanism (5) includes an outer protective sleeve (51), an arc guard plate (52), a long arc plate (53), and a clamping tube (54). A heated pipe (55) is provided in the outer protective sleeve (51). The arc guard plate (52) and the long arc plate (53) are located between the outer protective sleeve (51) and the heated pipe (55). The clamping tube (54) is welded to the long arc plate (53) and clamps the heated pipe (55).
10. The high-temperature flue gas temperature measuring device as described in claim 9, characterized in that, There are two clamping tubes (54), and the two clamping tubes (54) are respectively disposed at both ends of the outer protective sleeve (51).