Novel sintering machine air bellow gas temperature measuring device

Abstract

The utility model belongs to the technical field of sintering machine air bellow gas temperature measurement, and particularly relates to a novel sintering machine air bellow gas temperature measurement device. Which comprises a sintering machine air bellow, and an air bellow retaining wall, an air bellow supporting beam and a track supporting beam are arranged at the bottom of the sintering machine air bellow, and is characterized in that a primary protection pipe is welded to the air bellow retaining wall, the other end of the primary protection pipe is welded to the air bellow supporting beam, and a protection cover bottom plate is welded to the upper portion of the primary protection pipe through T-shaped steel; the protective cover bottom plate is coated with a protective cover coating, and a plurality of secondary protective pipes with one ends penetrating through the lower side of the primary protective pipe are connected into the primary protective pipe in a sleeved mode. According to the air bellow gas measuring device, multi-layer protection can be carried out on the independent thermocouples, washing of sintered ore is avoided, the measuring precision is guaranteed, the independent thermocouples can be rapidly replaced, the service life of the air bellow gas measuring device is prolonged, operation is reliable, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model belongs to the technical field of sintering machine bellows gas temperature measurement, in particular to a novel sintering machine bellows gas temperature measurement device. Background Art

[0002] In the sintering process, the end temperature and end position of the sintering ore are important technical indicators that determine the quality of the sintering ore. The actual sintering end position, i.e., the burn-through point, is determined by detecting the wind box exhaust gas temperature, so as to adjust the sintering machine speed so that the sintering end point reaches or approaches the theoretical set value, thereby improving the sintering ore quality. The existing sintering machine wind box temperature measuring device currently has the following problems:

[0003] 1. The sintering machine bellows gas temperature measuring device has only one layer of protective sleeve, and the thermocouple contacts pass through the opening above the protective sleeve, vertically facing the flushing direction of the bellows gas. During actual operation, the sintered ore particles in the bellows gas are very easy to gather at the opening position, resulting in a data lag in the thermocouple measurement.

[0004] 2. The sintering machine bellows gas temperature measuring device uses a parallel integrated thermocouple. If one core is damaged, the entire device can only be replaced.

[0005] 3. The current thermocouple installation position is located under the sintering trolley. The trolley must be lifted to replace the thermocouple. Due to limited space, the material is easily leaked under the grates of the trolley and the thermocouple is squeezed, making it difficult to extract and install the thermocouple core wire, and the replacement process is time-consuming and labor-intensive.

[0006] Therefore, the existing sintering machine bellows gas temperature measuring device cannot handle the temperature measurement failure in time after the thermocouple fails, which seriously restricts the stability and reliability of the entire sintering ore production. In order to ensure the safety and continuity of production and improve the stability and reliability of the system, a new sintering machine bellows gas temperature measuring device is proposed. Summary of the invention

[0007] The utility model aims to provide a novel sintering machine wind box gas temperature measuring device to solve the problems existing in the prior art.

[0008] The technical solution adopted by the utility model to solve its technical problems is: a novel sintering machine bellows gas temperature measuring device, including a sintering machine bellows, a bellows retaining wall, a bellows support beam and a track support beam are arranged at the bottom of the sintering machine bellows, a primary protection tube is welded on the bellows retaining wall, the other end of the primary protection tube is welded on the bellows support beam, a protective cover bottom plate is welded above the primary protection tube through T-steel, the protective cover bottom plate is coated with a protective cover coating, a plurality of secondary protection tubes with one end passing through the lower side of the primary protection tube are sleeved in the primary protection tube, the other end of the secondary protection tube passes through the primary protection tube and the bellows retaining wall and is connected to the track support beam, heat-resistant filling material is filled between the primary protection tube and the secondary protection tube, an independent thermocouple is installed in the secondary protection tube, and the measuring end of the independent thermocouple passes through the secondary protection tube downward.

[0009] Furthermore, the primary protection tube is in the shape of a hollow tube, one end of the primary protection tube is closed, a fixed flange is welded on the outer wall of the other end of the primary protection tube and a uniform distribution plate is welded on the inner wall, the closed end of the primary protection tube is welded to the bellows support beam, and one end of the primary protection tube welded with the uniform distribution plate passes through the bellows retaining wall and is welded to the bellows retaining wall through the fixed flange.

[0010] Furthermore, the fixed flange is a split flange, a plurality of evenly distributed holes are arranged on the evenly distributed plate, and a plurality of through holes are arranged below the primary protection tube.

[0011] Furthermore, the secondary protective tube is hollow and open at both ends. One end of the secondary protective tube passes through the primary protective tube through the uniformly distributed holes and is welded to the uniformly distributed plate at the penetration point. The other end of the secondary protective tube is bent and passes through the through hole of the primary protective tube. The secondary protective tube is welded to the primary protective tube at the through hole.

[0012] Furthermore, the length of the secondary protection tube protruding from the through hole is 50 mm.

[0013] Furthermore, the independent thermocouple is wired or flanged to one end of the secondary protection tube close to the track support beam.

[0014] Furthermore, the number of the secondary protection tubes and the number of the independent thermocouples are at least 4.

[0015] The utility model has the following beneficial effects:

[0016] 1. The utility model can provide multi-layer protection for independent thermocouples, avoid scouring of sintered ore, ensure measurement accuracy, realize rapid replacement of independent thermocouples, extend the service life of the bellows gas measuring device, operate reliably, and have low manufacturing cost.

[0017] 2. By making the measuring end of the independent thermocouple face downward, along the flushing direction of the bellows gas, it can effectively prevent the sintered ore particles from sticking to the independent thermocouple contacts, solve the measurement hysteresis, eliminate the interference of sintering machine accumulation on the measurement accuracy of the independent thermocouple, and effectively improve the stability and accuracy of the sintering machine bellows temperature measurement system.

[0018] 3. By installing the independent thermocouples in the secondary protection tubes, when a certain independent thermocouple has a measurement accuracy failure, it can be quickly replaced individually, saving spare parts costs.

[0019] 4. The secondary protection tube not only plays a protective role, but also serves as a lead wire in the process of replacing independent thermocouples, which effectively reduces the difficulty of replacement and greatly saves replacement time. It can also complete quick replacement for time-sensitive maintenance.

[0020] 5. The protective cover bottom plate and the protective cover coating arranged above it can effectively prevent the sintered ore from scouring the primary protective tube, thereby further extending the service life.

[0021] 6. Heat-resistant filling materials can provide further protection for independent thermocouples to prevent damage to the internal circuits of independent thermocouples. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the utility model.

[0023] Figure 2 It is a schematic cross-sectional view of the internal structure of the primary protection tube of the utility model.

[0024] Figure 3 This utility model Figure 2 A schematic diagram of the enlarged structure in the middle.

[0025] Figure 4 This utility model Figure 2 Schematic diagram of the cross-sectional structure at BB in the middle.

[0026] Figure 5 The utility model is a front view structural schematic diagram of one end of a primary protection pipe welded with a fixed flange.

[0027] Among them: 1. Sintering machine bellows; 2. Bellows retaining wall; 3. Bellows support beam; 4. Track support beam; 5. Primary protection tube; 6. Protective cover bottom plate; 7. T-shaped steel; 8. Protective cover coating; 9. Secondary protection tube; 10. Heat-resistant filling material; 11. Independent thermocouple; 12. Fixed flange; 13. Uniform plate; 14. Uniform holes; 15. Through hole. DETAILED DESCRIPTION

[0028] The utility model will now be further described in detail with reference to the accompanying drawings.

[0029] Embodiment 1:

[0030] like Figure 1-5 As shown, a novel gas temperature measuring device for a sintering machine bellows 1 comprises a sintering machine bellows 1, wherein a bellows retaining wall 2, a bellows support beam 3 and a track support beam 4 are arranged at the bottom of the sintering machine bellows 1, a primary protection tube 5 is welded on the bellows retaining wall 2, and the other end of the primary protection tube 5 is welded to the bellows support beam 3, a protective cover bottom plate 6 is welded above the primary protection tube 5 through a T-shaped steel 7, and a protective cover coating 8 is coated on the protective cover bottom plate 6, a plurality of secondary protection tubes 9 with one end passing through the lower side of the primary protection tube 5 are sleeved in the primary protection tube 5, and the other end of the secondary protection tube 9 passes through the primary protection tube 5 and the bellows retaining wall 2 and is then connected to the track support beam 4, a heat-resistant filling material 10 is filled between the primary protection tube 5 and the secondary protection tube 9, an independent thermocouple 11 is installed in the secondary protection tube 9, and the measuring end of the independent thermocouple 11 passes through the secondary protection tube 9 downward.

[0031] The primary protection tube 5 is in the shape of a hollow tube, one end of which is closed, a fixed flange 12 is welded on the outer wall of the other end of the primary protection tube 5 and a uniform distribution plate 13 is welded on the inner wall, the closed end of the primary protection tube 5 is welded to the bellows support beam 3, and one end of the primary protection tube 5 to which the uniform distribution plate 13 is welded passes through the bellows retaining wall 2 and is welded to the bellows retaining wall 2 through the fixed flange 12.

[0032] The fixed flange 12 is a split flange, a plurality of evenly distributed holes 14 are provided on the evenly distributed plate 13, and a plurality of through holes 15 are provided below the primary protection tube 5. The evenly distributed holes 14 are used to pass through the secondary protection tube 9 so that the secondary protection tube 9 can be evenly distributed. The through holes 15 are used for the secondary protection tube 9 to pass through the bottom of the primary protection tube 5.

[0033] The secondary protection tube 9 is hollow and open at both ends. One end of the secondary protection tube 9 passes through the primary protection tube 5 through the uniformly distributed holes 14 and is welded to the uniformly distributed plate 13 at the penetration point. The other end of the secondary protection tube 9 is bent and passes through the through hole 15 of the primary protection tube 5. The secondary protection tube 9 is welded to the primary protection tube 5 at the through hole 15.

[0034] The length of the secondary protection tube 9 protruding from the through hole 15 is 50 mm, so that the independent thermocouple 11 can be protruded to a sufficient length to monitor the temperature and prevent measurement deviation.

[0035] The independent thermocouple 11 is connected to one end of the secondary protection tube 9 close to the track support beam 4 by wire connection or flange connection.

[0036] The number of the secondary protection tubes 9 and the number of the independent thermocouples 11 are both four.

[0037] Embodiment 2:

[0038] This embodiment provides a novel sintering machine bellows gas temperature measuring device, which has a structure basically the same as that of Embodiment 1, except that: the number of secondary protection tubes 9 and independent thermocouples 11 are both 6, and the outer diameter of the primary protection tube 5 in step (1) is Φ108mm.

[0039] The working principle of the utility model is:

[0040] When the independent thermocouple 11 needs to be replaced, it is disassembled from the secondary protection tube 9 and pulled out of the secondary protection tube 9, and then a new independent thermocouple 11 is inserted into the secondary protection tube 9 and connected to the secondary protection tube 9, thereby completing the replacement.

[0041] Since the measuring end of the independent thermocouple 11 is facing downward, along the flushing direction of the bellows gas, it can effectively prevent the sintered ore particles from sticking to the contacts of the independent thermocouple 11, solving the hysteresis of the measurement. The interference of the sintering machine accumulation on the measurement accuracy of the independent thermocouple 11 is eliminated, so that the stability and accuracy of the temperature measurement system of the sintering machine bellows 1 are effectively improved. In addition, the independent thermocouple 11 is installed in the secondary protection tube 9 accordingly. When a certain independent thermocouple 11 has a measurement accuracy failure, it can be quickly replaced separately, saving the cost of spare parts. At the same time, the secondary protection tube 9 not only plays a protective role, but also plays the role of a lead in the process of replacing the independent thermocouple 11, effectively reducing the difficulty of replacement, greatly saving replacement time, and can also complete quick replacement for time-sensitive regular repairs. The protective cover bottom plate 6 and the protective cover coating 8 arranged above it can effectively prevent the sintered ore from flushing the primary protection tube 5, thereby further extending the service life. The heat-resistant filling material 10 can further provide protection for the independent thermocouple 11 to prevent the internal circuit of the independent thermocouple 11 from being damaged.

[0042] The manufacturing method of the utility model is operated according to the following steps:

[0043] (1) A 316L stainless steel tube is used as the primary protection tube 5 and the secondary protection tube 9. The length of the primary protection tube 5 is 2495 mm, the outer diameter is Φ89 mm, and the outer diameter of the secondary protection tube 9 is Φ20 mm. A through hole 15 is opened at the bottom of the cylindrical surface of the primary protection tube 5. The diameter of the through hole 15 can allow the bend of the primary protection tube 5 to pass obliquely, thereby blocking one end of the primary protection tube 5.

[0044] (2) Bend one end of the secondary protection tube 9, pass the bent portion of the secondary protection tube 9 through the through hole 15 below the cylindrical surface of the primary protection tube 5, and gradually arrange the secondary protection tubes 9 in order from long to short. The bent portion of the secondary protection tube 9 extends 50 mm from the through hole 15 below the primary protection tube 5, and the uniform distribution plate 13 is placed on the outer cylindrical surface of the secondary protection tube 9 through the uniform distribution holes 14;

[0045] (3) Fill the heat-resistant filling material 10 between the primary protection tube 5 and the secondary protection tube 9;

[0046] (4) According to the connection method of the independent thermocouple 11, a flange or an internal thread is welded at the end of the secondary protection tube 9, and the independent thermocouple 11 is inserted into the corresponding secondary protection tube 9 according to its length. The length of the end of the independent thermocouple 11 extending out of the primary protection tube 5 is more than 50 mm. An air leakage gasket is installed at the junction of the secondary protection tube 9 and the independent thermocouple 11 to prevent wild wind from entering. The independent thermocouple 11 is subjected to a preliminary wiring test to ensure that there is no abnormality in the independent thermocouple 11.

[0047] (5) The uniform distribution plate 13 is fully welded to the open end of the primary protection tube 5, the uniform distribution plate 13 at the uniform distribution hole 14 is fully welded to the secondary protection tube 9, and the secondary protection tube 9 and the primary protection tube 5 are fully welded at the through hole 15 to prevent the influence of air leakage on the measurement accuracy. At this time, the primary protection tube 5 and the secondary protection tube 9 have been welded into a whole;

[0048] (6) Drill holes on the bellows retaining wall 2, the bellows support beam 3, and the track support beam 4, insert the primary protection tube 5 into the holes on the bellows support beam 3 and the bellows retaining wall 2 in sequence, weld the closed end of the primary protection tube 5 to the bellows support beam 3, and at this time, the secondary protection tubes 9 pass through the holes on the track support beam 4 respectively;

[0049] (7) Clamp the split fixing flange 12 on the outer wall of the primary protection tube 5, attach the fixing flange 12 to the wind box retaining wall 2, and then fully weld the fixing flange 12 to the primary protection tube 5 and the wind box retaining wall 2 to prevent air leakage in the sintering machine;

[0050] (8) Welding a T-shaped steel 7 above the primary protection tube 5, welding a protective cover bottom plate 6 to the top of the T-shaped steel 7, welding the bottom of the protective cover bottom plate 6 to the outer wall of the primary protection tube 5, and coating a protective cover coating 8 on the upper surface of the protective cover bottom plate 6;

[0051] (9) Wire and debug the independent thermocouple 11 junction box and put it into use after no abnormality is found.

[0052] The above-described embodiments are merely descriptions of preferred implementations of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made by ordinary persons in the art to the technical solution of the present invention shall fall within the scope of protection of the present invention.

[0053] The technology, shape and structure parts not described in detail in the present invention are all known technologies.

Claims

1. A novel sintering machine bellows gas temperature measuring device, comprising a sintering machine bellows, wherein the bottom of the sintering machine bellows is provided with a bellows retaining wall, a bellows support beam, and a track support beam, characterized in that: A primary protection tube is welded on the bellows retaining wall, and the other end of the primary protection tube is welded to the bellows support beam. A protective cover bottom plate is welded above the primary protection tube through T-steel, and the protective cover bottom plate is coated with a protective cover coating. A number of secondary protection tubes with one end passing through the lower side of the primary protection tube are sleeved in the primary protection tube, and the other end of the secondary protection tube passes through the primary protection tube and the bellows retaining wall and is connected to the track support beam. Heat-resistant filling materials are filled between the primary protection tube and the secondary protection tube, and an independent thermocouple is installed in the secondary protection tube, and the measuring end of the independent thermocouple passes through the secondary protection tube downward.

2. The novel sintering machine wind box gas temperature measuring device according to claim 1 is characterized in that: The primary protection tube is in the shape of a hollow tube, one end of which is closed, a fixed flange is welded on the outer wall of the other end of the primary protection tube and a uniform distribution plate is welded on the inner wall, the closed end of the primary protection tube is welded to the bellows support beam, and one end of the primary protection tube welded with the uniform distribution plate passes through the bellows retaining wall and is welded to the bellows retaining wall through the fixed flange.

3. The novel sintering machine wind box gas temperature measuring device according to claim 2 is characterized in that: The fixed flange is a split flange, a uniformly distributed plate is provided with a plurality of uniformly distributed holes, and a plurality of through holes are provided below the primary protection tube.

4. The novel sintering machine wind box gas temperature measuring device according to claim 3 is characterized in that: The secondary protective tube is hollow and open at both ends. One end of the secondary protective tube passes through the primary protective tube through the uniformly distributed holes and is welded to the uniformly distributed plate at the penetration point. The other end of the secondary protective tube is bent and passes through the through hole of the primary protective tube. The secondary protective tube is welded to the primary protective tube at the through hole.

5. The novel sintering machine wind box gas temperature measuring device according to claim 4 is characterized in that: The length of the secondary protection tube protruding from the through hole is 50 mm.

6. The novel sintering machine wind box gas temperature measuring device according to claim 1 is characterized in that: The independent thermocouple is wired or flanged to one end of the secondary protection tube close to the track support beam.

7. The novel sintering machine wind box gas temperature measuring device according to claim 1 is characterized in that: The number of the secondary protection tubes and the number of the independent thermocouples are at least 4.

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