Adjustable temperature measuring device for oxygen-enriched side-blown furnace uptake

Abstract

The utility model discloses a kind of adjustable temperature measuring devices for oxygen-rich side-blown furnace rising flue, including the connecting flange of fixed pipe, thermocouple is inserted in fixed pipe, fixed pipe side is equipped with the locking piece of thermocouple fixed by being inserted into the cavity of fixed pipe, fixed pipe extends through the connecting flange and has protection tube, protection tube movably connects the moving pipe close to thermocouple measuring section, moving pipe is connected with the fixed screw rod passing through the connecting flange, and fixed screw rod is connected to fixed pipe.The utility model can adjust the insertion depth of thermocouple, accurately adjust the insertion depth of thermocouple, provide real-time, accurate temperature data for process operation, protection tube and moving pipe can protect thermocouple measured by being inserted into flue, can avoid that scale falling on furnace wall can smash thermocouple, guarantee the safe use of thermocouple and the accuracy of temperature measurement.

Description

Technical Field

[0001] This utility model relates to the field of flue gas temperature measurement technology, and in particular to an adjustable temperature measuring device for the rising flue gas duct of an oxygen-enriched side-blown furnace. Background Technology

[0002] An oxygen-enriched side-blown furnace is a device used for smelting metals or alloys. Its key feature is the use of a high-concentration oxygen-enriched gas mixed with fuel for combustion, resulting in a high-temperature smelting effect. The main advantages of an oxygen-enriched side-blown furnace are its wide adaptability to the physical specifications and chemical composition of materials. Due to its low cost and broad material adaptability, it is widely used in the hazardous waste and solid waste treatment industries. During combustion, the temperature within the rising flue of the oxygen-enriched side-blown furnace needs to be measured to adjust production data.

[0003] Currently, the diameter of the rising flue of the oxygen-enriched side-blown furnace used for waste treatment is generally 1.5m. The riser flue is 18m high, and the current temperature measuring point in the riser flue of an oxygen-enriched side-blown furnace is generally 6 meters above the molten pool surface. Insertion thermocouples are used for temperature measurement; the thermocouple is inserted through the furnace wall into the furnace to measure the temperature of the riser flue. However, the furnace wall thickness of the riser flue in an oxygen-enriched side-blown furnace is generally 0.5 meters, and scale easily accumulates on the furnace wall after prolonged use. During temperature measurement, if the thermocouple is inserted too deeply, scale falling from the furnace wall can damage the thermocouple, leading to inaccurate readings; if the thermocouple is inserted too shallowly, the reading will also be inaccurate, failing to provide real-time and accurate temperature data for process operations. Utility Model Content

[0004] To address the technical problem in existing technologies where thermocouples inserted too deeply or too shallowly can lead to inaccurate temperature readings and prevent the acquisition of real-time, accurate temperature data during scaling on the furnace wall of the rising flue of an oxygen-enriched side-blown furnace, this invention provides the following technical solution.

[0005] This utility model discloses an adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace, comprising a connecting flange with a fixed pipe, a thermocouple inserted inside the fixed pipe, a locking member extending into the inner cavity of the fixed pipe to fix the thermocouple on one side of the fixed pipe, a protective pipe extending through the connecting flange from the fixed pipe, a movable pipe movably connected to the protective pipe near the thermocouple measuring section, the movable pipe being connected to a fixing screw passing through the connecting flange, and the fixing screw being connected to the fixed pipe.

[0006] As a further technical solution, the locking component includes a fixed post with an axial thread that is fixedly connected to the fixed tube and a locking bolt that is threaded to the fixed post and extends into the inner cavity of the fixed tube to fix the thermocouple.

[0007] As a further technical solution, the locking bolt has a fixed abutment end at one end that abuts against the thermocouple.

[0008] As a further technical solution, the side of the clamping end facing the thermocouple has a rough or frosted surface.

[0009] As a further technical solution, the outer periphery of the protective tube is provided with an external thread, and the inner cavity of the movable tube is provided with an internal thread that matches the external thread.

[0010] As a further technical solution, the outer wall of the movable tube is provided with a plurality of first fixing rings, the outer wall of the fixed tube is provided with a second fixing ring, and the lower end and the upper end of the fixing screw are respectively connected to the first fixing ring and the second fixing ring.

[0011] As a further technical solution, the upper end of the fixing screw passes through the second fixing ring and is connected to a nut.

[0012] The beneficial effects of this invention are as follows: The temperature measuring device of this invention uses a fixed tube and a locking component to adjust the insertion depth of the thermocouple. After the depth is adjusted, the thermocouple is locked, allowing for accurate adjustment of the thermocouple insertion depth and providing real-time and accurate temperature data for process operations. Furthermore, the protective tube and the moving tube protect the thermocouple inserted into the flue for measurement. After the moving tube moves relative to the protective tube, it can be restricted by a fixing screw, preventing scale falling from the furnace wall from damaging the thermocouple and ensuring the safe use of the thermocouple and the accuracy of temperature measurement. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to this utility model. Figure 2 This is an exploded view of the adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to this utility model. Figure 3 This is a cross-sectional view of the fixed tube of the adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to this utility model. In the diagram: 1-Connecting flange; 101-Through hole; 2-Fixing pipe; 3-Locking component; 301-Fixing post; 302-Locking bolt; 303-Clamping end; 4-Protective pipe; 401-External threaded part; 5-Moving pipe; 501-Internal threaded part; 6-First fixing ring; 7-Fixing screw; 8-Second fixing ring; 9-Nut; 10-Thermocouple. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0015] In the description of this utility model, it should be understood that the terms "upper" and "lower" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., 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. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0016] like Figure 1 As shown, this utility model discloses an adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace, comprising a connecting flange 1 with a fixed pipe 2, and a thermocouple 10 inserted inside the fixed pipe 2. The fixed pipe 2 is made of stainless steel. The connecting flange 1 is used to connect to the flange of the temperature measuring point in the rising flue. The fixed pipe 2 passes through the connecting flange 1, and the thermocouple 10, after passing through the fixed pipe 2, extends into the rising flue for temperature measurement.

[0017] like Figure 1 and Figure 3 As shown, in a preferred embodiment, a locking member 3 is provided on one side of the fixing tube 2. The locking member 3 can extend into the inner cavity of the fixing tube 2 to fix the thermocouple 10. Specifically, the locking member 3 includes a fixing post 301 fixedly connected to the fixing tube 2. The fixing post 301 is welded to the fixing tube 2, and the fixing post 301 has an internal thread in its axial direction. At this time, the fixing post 301 is threadedly connected by a locking bolt 302. After the locking bolt 302 is threadedly connected to the fixing post 301, it extends into the inner cavity of the fixing tube 2, and its end can press against and fix the outer wall of the thermocouple 10 inside the fixing tube 2.

[0018] When measuring the temperature of the rising flue, the thermocouple 10 is inserted from the fixed tube 2 to a designated depth within the temperature measuring point. The locking bolt 302 is then tightened so that its end presses against the thermocouple 10, maintaining the thermocouple 10 at the designated depth for temperature measurement of the rising flue. At this time, the locking bolt 302 has a fixed abutment 303 at its end, which can be... Figure 3The disc-shaped structure shown, with a rough or frosted surface on the side of the clamping end 303 facing the thermocouple 10, increases the friction between the clamping end 303 and the outer wall of the thermocouple 10. Thus, after the clamping end 303 is clamped against the thermocouple 10 by the locking bolt 302, it prevents the thermocouple 10 from shifting. Alternatively, the clamping end 303 can also be a sharp structure, concentrating the force on the clamping end 303 against the outer wall of the thermocouple 10, which similarly increases the fixing effect on the thermocouple 10 and prevents it from shifting.

[0019] like Figure 1 and Figure 2 As shown, in a preferred embodiment, the fixed tube 2 extends through the connecting flange 1 and has a protective tube 4. The protective tube 4 can be integrally formed with the fixed tube 2, or it can be welded and fixed separately to the connecting flange 1. This utility model does not impose any particular limitation on this. The protective tube 4 is movably connected to a movable tube 5 near the measuring section of the thermocouple 10. In this embodiment, the protective tube 4 and the movable tube 5 are threaded together. At this time, the outer periphery of the protective tube 4 is provided with an external thread 401, and the inner cavity of the movable tube 5 is provided with an internal thread 501 that matches the external thread 401. By turning the movable tube 5, the movable tube 5 can move relative to the protective tube 4. Thus, when the insertion depth of the thermocouple 10 changes, the movable tube 5 moves relative to the protective tube 4 to adapt to the insertion depth of the thermocouple 10. This provides protection for the part of the thermocouple 10 inserted into the rising flue without affecting the temperature measurement of the thermocouple 10.

[0020] In a preferred embodiment, the connecting flange 1 is provided with a through hole 101, and the moving tube 5 is connected to a fixing screw 7 that passes through the through hole 101. The fixing screw 7 is connected to the fixing tube 2 and is used to fix the moving tube 5 to prevent the moving tube 5 from being twisted and shifted after being hit by scale in the furnace during the temperature measurement process.

[0021] Specifically, the outer wall of the moving tube 5 is provided with several first fixing rings 6. In this embodiment, there are three first fixing rings 6, which are evenly distributed along the circumference of the outer wall of the moving tube 5. The outer wall of the fixed tube 2 is provided with a second fixing ring 8. The lower end and the upper end of the fixing screw 7 are respectively connected to the first fixing ring 6 and the second fixing ring 8. At the same time, the upper end of the fixing screw 7 passes through the second fixing ring 8 and is connected to a nut 9. After the nut 9 is threadedly connected to the upper part of the fixing screw 7, the fixing screw 7 can be prevented from moving, thereby preventing the moving tube 5 from twisting and shifting.

[0022] In use, the present invention is first inserted through the fixed tube 2 to the specified depth of the temperature measuring point, and the locking bolt 302 is turned to fix the thermocouple 10. Then, the moving tube 5 is turned to move relative to the protective tube 4 to protect the thermocouple 10 inserted into the rising flue. Then, the rod of the fixing screw 7 is passed through the first fixing ring 6, the through hole 101 and the second fixing ring 8 in sequence, and connected to the upper part of the fixing screw 7 located on the second fixing ring 8 by the nut 9, thus completely fixing the moving tube 5. Finally, the connecting flange 1 is connected to the flange of the temperature measuring point.

[0023] The preferred embodiments and examples of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments and examples. Within the scope of knowledge possessed by those skilled in the art, various changes or equivalent substitutions can be made without departing from the concept of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace, comprising a connecting flange (1) with a fixed pipe (2), wherein a thermocouple (10) is inserted inside the fixed pipe (2), characterized in that: The fixed tube (2) has a locking member (3) on one side that extends into the inner cavity of the fixed tube (2) to fix the thermocouple (10). The fixed tube (2) extends through the connecting flange (1) and has a protective tube (4). The protective tube (4) is movably connected to a moving tube (5) near the measuring section of the thermocouple (10). The moving tube (5) is connected to a fixing screw (7) that passes through the connecting flange (1). The fixing screw (7) is connected to the fixed tube (2).

2. The adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to claim 1, characterized in that: The locking element (3) includes a fixed post (301) with an axial thread that is fixedly connected to the fixed tube (2) and a locking bolt (302) that is threaded to the fixed post (301) and extends into the inner cavity of the fixed tube (2) to fix the thermocouple (10).

3. The adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to claim 2, characterized in that: The locking bolt (302) is fixedly provided with a clamping end (303) at one end that abuts against the thermocouple (10).

4. The adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to claim 3, characterized in that: The side of the clamping end (303) facing the thermocouple (10) has a rough or frosted surface.

5. The adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to claim 1, characterized in that: The protective tube (4) has an external thread (401) on its outer periphery, and the moving tube (5) has an internal thread (501) that matches the external thread (401) in its inner cavity.

6. The adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to claim 1, characterized in that: The outer wall of the movable tube (5) is provided with a plurality of first fixing rings (6), the outer wall of the fixed tube (2) is provided with a second fixing ring (8), and the lower end and upper end of the fixing screw (7) are respectively connected to the first fixing ring (6) and the second fixing ring (8).

7. The adjustable temperature measuring device for the rising flue of an oxygen-enriched side-blown furnace according to claim 6, characterized in that: The upper end of the fixing screw (7) passes through the second fixing ring (8) and is connected to a nut (9).

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