CN215103364U - Main iron runner temperature measuring device - Google Patents
Main iron runner temperature measuring device Download PDFInfo
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- CN215103364U CN215103364U CN202120162118.XU CN202120162118U CN215103364U CN 215103364 U CN215103364 U CN 215103364U CN 202120162118 U CN202120162118 U CN 202120162118U CN 215103364 U CN215103364 U CN 215103364U
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Abstract
The utility model relates to a main iron runner temperature measuring device, including the shell, the lateral wall internal surface mounting copper of shell, the copper highly is located main iron runner slag-iron boundary line department, and the lateral wall surface of shell has sleeve pipe, bushing thermocouple. And a copper plate for measuring the temperature is fixed on the inner surface of the side wall of the steel shell at each temperature measuring point of the main iron runner, and the height of the copper plate is equivalent to the height of a slag-iron boundary line. The copper plate has good thermal conductivity, so that the thermocouple can monitor the area temperature of the area of the copper plate, and the monitoring of the thermocouple is more comprehensive.
Description
Technical Field
The utility model relates to the technical field of blast furnace main iron runner, in particular to a main iron runner temperature measuring device.
Background
The main iron runner is an indispensable device for bearing important functions of slag-iron separation and molten iron diversion in the blast furnace tapping process, and consists of a steel shell and a refractory lining. The refractory lining is continuously thinned along with the increase of the tapping quantity under the thermal shock effect formed by the erosion of high-temperature slag iron and the intermittent tapping system of the blast furnace during the work, thereby endangering the safe tapping operation. Therefore, the key of the blast furnace tapping safety operation is to effectively judge whether the lining of the main iron runner refractory material has potential safety hazards. At present, adopt two kinds of modes to monitor main iron runner refractory material inside lining in the production, one kind adopts the thickness of iron borer survey main iron runner refractory material inside lining artificially, and another kind is through thermocouple monitoring inside lining temperature, calculates refractory material inside lining thickness through the heat transfer coefficient of temperature parameter and refractory material. Both of these approaches suffer from the following drawbacks.
When the thickness of the main iron runner refractory material is manually detected by using an iron chisel, the accuracy depends on manual experience, unpredictability exists, comprehensive and accurate detection cannot be realized, operation is required in the high-temperature environment of the iron runner, and certain potential safety hazards exist for operators. If the method is adopted, if leakage detection exists, huge accident potential can be brought to the safety of the main iron runner.
The thickness of the main iron runner refractory is monitored by adopting a thermocouple, and the principle is to calculate the thickness of the lining of the refractory through temperature parameters and the heat transfer coefficient of the refractory. The method can accurately calculate the thickness of the refractory material of the main iron runner, can monitor the thickness change of the refractory material in real time, and is adopted by most blast furnaces at present. However, the structural form and the installation mode of the conventional main iron runner temperature thermocouple have various defects, so that the effective monitoring effect cannot be achieved.
At present, the installation mode of a main iron runner temperature thermocouple is usually to embed the thermocouple into a main runner permanent layer brick layer, the installation mode can be implemented only in a newly manufactured main iron runner lining, and the main iron runner lining has the conditions of expansion, vibration and the like in the use process, so that the thermocouple can be damaged, and the thermocouple loses the temperature measurement function. And a new thermocouple cannot be replaced online after a problem is found. Therefore, the thermocouple installation mode cannot meet the requirement of continuously, effectively and accurately monitoring the temperature of the main iron runner.
SUMMERY OF THE UTILITY MODEL
One or more embodiments provide the following technical solutions:
the main iron runner temperature measuring device comprises a shell, wherein a copper plate is arranged on the inner surface of the side wall of the shell, the center height of the copper plate is positioned at the slag-iron boundary line of the main iron runner, a sleeve is arranged on the outer surface of the side wall of the shell, and the sleeve is connected with a thermocouple.
The shell is a groove type, and the interior of the shell is provided with a refractory lining.
The refractory lining includes a permanent layer and a consumable layer joined together.
The copper plate is cast with the permanent layer.
The thermocouple is connected to the bushing by a fastener.
The thermocouple comprises a temperature measuring element and a copper pipe which are sleeved together, wherein the temperature measuring element is arranged inside the copper pipe, and a spring pressing device is arranged outside the copper pipe.
The copper pipe, the spring pressing device and the temperature measuring element penetrate into the sleeve and are fixed on the sleeve through the fastening piece.
The end face of the temperature measuring element is contacted with the inner side end face of the copper pipe, and the outer side end face of the copper pipe is contacted with the surface of the copper plate.
The temperature measuring element is connected with the plug-in unit through a lead, and temperature signals are led into the display device or the controller.
The above one or more technical solutions have the following beneficial effects:
1. and a copper plate for measuring the temperature is fixed on the inner surface of the side wall of the steel shell at each temperature measuring point of the main iron runner, and the height of the copper plate is equivalent to the height of a slag-iron boundary line. The copper plate has good thermal conductivity, so that the thermocouple can monitor the area temperature of the area of the copper plate, and the monitoring of the thermocouple is more comprehensive.
2. The thermocouple is connected by screw thread and fixed on the external sleeve of the main channel steel shell, which is convenient for replacement.
3. The thermocouple is provided with a spring pressing device, so that the thermocouple is stably pressed on the copper plate, the contact between the thermocouple and the copper plate can be ensured to be close all the time, the shearing damage of the thermocouple caused by the displacement of the refractory material and the data distortion caused by poor contact are avoided,
drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic diagram of an overall structure provided by one or more embodiments of the present invention;
fig. 2 is a schematic diagram of a thermocouple structure provided in one or more embodiments of the present invention;
in the figure: 1. a sacrificial layer; 2. a permanent layer; 3. a housing; 4. a copper plate; 5. a sleeve; 501. a spring hold down; 502. a copper pipe; 503. a temperature measuring element; 504. a wire; 505. a plug-in; 6. a fastener; 7. slag and iron boundary line.
Detailed Description
The following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
As described in the background art, when the thickness of the refractory lining of the main iron runner is monitored by using a thermocouple, the temperature measuring element is easily damaged due to the shock and expansion of the refractory brick lining because the refractory lining is subjected to the thermal stress caused by a large temperature difference. For example:
the utility model CN204897953U discloses a blast furnace iron runner monitoring devices, has proposed through being equipped with net and a plurality of thermocouple between clay insulating brick layer and the permanent layer of iron runner in the main ditch shell hat, combines the finite element analysis mode to establish cellular monitoring network, establishes iron runner erosion system. Although a large amount of lining temperature data can be obtained by the scheme, the defects of thermocouple virtual connection, damage and the like caused by brick lining vibration and expansion are still not solved.
Utility model patent CN110093469A, it sets up the temperature measurement board mounting groove at the permanent layer prefab cold face of main iron runner to have proposed, installs the copper in the mounting groove, and the thermocouple is by main ditch side-mounting, the temperature measurement mode that the work end and copper met. In the thermocouple installation mode, the copper plate and the permanent layer prefabricated member are integrated, so that the contact virtual connection condition of the thermocouple and the copper plate is generated due to the thermal expansion motion of the permanent layer prefabricated member in the working process, and the accuracy of temperature measurement data is influenced. Meanwhile, the temperature measurement mode limits that a prefabricated part must be adopted for a permanent layer of the main iron runner, and has certain limitation.
The utility model patent CN210664800U discloses a main ditch inside lining temperature measuring device, has proposed the temperature element who is equipped with the collet, and the temperature measurement subassembly front end is established nai material chock plug, and temperature element carries out temperature measurement from main ditch steel casing lateral wall inserts in the permanent lining of main ditch lateral wall. Although the temperature measuring device solves the problems of online replacement and virtual connection of the thermocouple, the temperature measuring device can only measure the temperature of a certain point of the side wall of the main iron runner, and the damaged refractory material of the side wall of the main runner is a surface or a line in practice, so that the damaged part of the lining of the main runner cannot be accurately detected.
Based on the problem that exists at present, this embodiment provides a temperature measuring device that can accurate monitoring owner's iron runner inside lining temperature, can conveniently change again, and the inside lining thickness of main iron runner working layer is calculated to accessible owner's iron runner inside lining temperature to ensure main iron runner safety in production, improve the iron capacity of leading to of main iron runner, have apparent ann's meaning and economic meaning.
Main iron runner: blast furnace casting house first order runner for slag-iron separation and molten iron water conservancy diversion, inside has the inner liner that undertakes high temperature molten iron, the inner liner can bear relatively very high temperature, because the temperature is higher, resistant material can be along with the loss and attenuate gradually, consequently, common main iron runner inside lining is two-layer, one side that is close to the steel shell is the permanent bricklaying layer, this one deck not direct contact molten iron, and one side of direct contact high temperature molten iron is the consumption layer, can be along with removing the increase of iron volume and progressively attenuate.
Temperature measuring device: the temperature monitoring device is used for monitoring the temperature of the main iron runner refractory, judging the corrosion condition of the main iron runner refractory according to temperature parameters, wherein the refractory value is the total thickness of the permanent layer and the consumption layer, and when the total thickness is less than a certain value, the main iron runner needs to be stopped to repair the lining refractory.
The first embodiment is as follows:
as shown in fig. 1-2, the main iron runner temperature measuring device comprises a shell 3, wherein a copper plate 4 is arranged on the inner surface of the side wall of the shell 3, the center height of the copper plate 4 is positioned at a slag-iron boundary line 7, the copper plate 4 is fixedly connected by a permanent layer 2 inside the shell 3 (for example, the copper plate 4 and the permanent layer 2 are poured together), and the permanent layer 2 is also connected with a consumption layer 1.
The copper plate 4 is connected with a thermocouple through a sleeve 5 for detecting the temperature of the inner-layer refractory, and the thermocouple is connected with the sleeve 5 through a fastener 6.
The thermocouple comprises a temperature measuring element 503, the temperature measuring element 503 is sleeved on a copper pipe 502, the temperature measuring element is located inside the copper pipe and used for protecting the temperature measuring element 503, a spring pressing device 501 is arranged on the outer surface of the copper pipe, the copper pipe 502 connected with the spring pressing device 501 and the temperature measuring element 503 penetrates into a sleeve 5, and the thermocouple is fixed on the sleeve 5 through a fastener.
The end face of the temperature measuring element 503 is contacted with the end face of the inner side of the copper pipe 502, the end face of the outer side of the copper pipe 502 is contacted with the surface of the copper plate 4, so that the temperature signal of the area covered by the copper plate 4 can be transmitted to the temperature measuring element 503 through the copper pipe 502, the temperature measuring element 503 is connected with the plug-in unit 505 through the lead 504, the temperature signal is led into a display device or a controller, and the temperature of the lining refractory material of the main iron runner is monitored in a field or a remote control room.
The number of the copper plates 4 for measuring the temperature is not limited, the number of the corresponding matched thermocouples is not limited, two groups of thermocouples are correspondingly arranged on the slag iron boundary line of the main iron runner and positioned at two sides of the shell of the main iron runner in figure 1, and the actual number is set according to the specification and model of the main iron runner.
And a copper plate for measuring the temperature is fixed on the inner surface of the side wall of the steel shell at each temperature measuring point of the main iron runner. The central height of the copper plates is equivalent to the height of the slag-iron boundary line, and the copper plates are correspondingly staggered along the two sides of the center of the main iron runner, so that the temperature of the lining refractory material of the main iron runner can be more accurately obtained.
For example: the size of the copper plate is 500mm multiplied by 500mm, the copper plate is arranged at the measuring points which are arranged at the distance of 800 mm and 1000mm from the length direction of the main iron runner, and the position of the measuring point at one side corresponds to the position of the central line of the two measuring points at the other side.
The thermocouple is connected by screw thread and fixed on the external sleeve of the main channel steel shell, which is convenient for replacement. The thermocouple is provided with a spring pressing device, so that the thermocouple is stably pressed on the copper plate, and the contact between the thermocouple and the copper plate can be guaranteed to be close all the time. Therefore, the shearing damage of the refractory material displacement to the thermocouple and the data distortion caused by poor contact are avoided, and the long-term stable use of the thermocouple is achieved. Meanwhile, the thermocouple is monitored by the copper plate, and the copper plate has good thermal conductivity, so that the thermocouple can monitor the area temperature of the copper plate, and the monitoring of the thermocouple is more comprehensive. When the thermocouple is in fault and needs to be replaced, only the fastener needs to be removed and the faulty temperature measuring element needs to be replaced, and the main iron runner does not need to be stopped and overhauled.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. The utility model provides a main iron runner temperature measuring device which characterized in that: the device comprises a shell, wherein a copper plate is arranged on the inner surface of the side wall of the shell, the center height of the copper plate is positioned at the position of a main iron runner slag-iron boundary line, a sleeve is arranged on the outer surface of the side wall of the shell, and the sleeve is connected with a thermocouple.
2. The main iron runner temperature measuring device of claim 1, wherein: the inside of the shell is provided with an inner lining layer.
3. The main iron runner temperature measuring device of claim 2, wherein: the innerliner includes a permanent layer and a consumable layer that are joined together.
4. The main iron runner temperature measuring device of claim 3, wherein: the copper plate is cast with the permanent layer.
5. The main iron runner temperature measuring device of claim 1, wherein: the thermocouple is connected to the bushing by a fastener.
6. The main iron runner temperature measuring device of claim 5, wherein: the thermocouple comprises a temperature measuring element and a copper pipe which are sleeved together, wherein the temperature measuring element is arranged inside the copper pipe, and a spring pressing device is arranged outside the copper pipe.
7. The main iron runner temperature measuring device of claim 6, wherein: the copper pipe, the spring pressing device and the temperature measuring element penetrate into the sleeve and are fixed on the sleeve through the fastening piece.
8. The main iron runner temperature measuring device of claim 7, wherein: the end face of the temperature measuring element is in contact with the inner side end face of the copper pipe, and the outer side end face of the copper pipe is in contact with the surface of the copper plate.
9. The main iron runner temperature measuring device of claim 8, wherein: the temperature measuring element is connected with the plug-in unit through a lead.
10. The main iron runner temperature measuring device of claim 9, wherein: the plug-in unit guides the temperature signal to the display device or the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120162118.XU CN215103364U (en) | 2021-01-20 | 2021-01-20 | Main iron runner temperature measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120162118.XU CN215103364U (en) | 2021-01-20 | 2021-01-20 | Main iron runner temperature measuring device |
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| CN215103364U true CN215103364U (en) | 2021-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350873A (en) * | 2022-01-20 | 2022-04-15 | 山东钢铁集团日照有限公司 | Blast furnace iron runner erosion line position determination method |
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2021
- 2021-01-20 CN CN202120162118.XU patent/CN215103364U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114350873A (en) * | 2022-01-20 | 2022-04-15 | 山东钢铁集团日照有限公司 | Blast furnace iron runner erosion line position determination method |
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