CN216846585U - Surface temperature detection device for industrial tail waste gas furnace - Google Patents
Surface temperature detection device for industrial tail waste gas furnace Download PDFInfo
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- CN216846585U CN216846585U CN202220429359.0U CN202220429359U CN216846585U CN 216846585 U CN216846585 U CN 216846585U CN 202220429359 U CN202220429359 U CN 202220429359U CN 216846585 U CN216846585 U CN 216846585U
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Abstract
The utility model provides a surface temperature detection device of an industrial exhaust gas furnace, which comprises a temperature measuring cable, a ceramic plug-in, a high temperature resistant compensating wire, a temperature polling instrument and a fixed point fixing unit; the temperature measuring cable rotating disc is wound on the surface of the measured tail gas furnace; arranging a plurality of fixed point fixing units on the surface of the measured tail waste gas furnace, and pressing the temperature measuring cable on the surface of the measured tail waste gas furnace; the wire end of the temperature measuring cable is inserted into one end of the ceramic plug-in; the other end of the ceramic plug-in is connected with one end of a high-temperature-resistant compensation wire; the other end of the high temperature resistant compensation wire is connected to the temperature polling instrument. The utility model provides an industry tail waste gas stove surface temperature detection device, but the temperature in each region of real-time supervision tail gas stove surface can detect the temperature condition of overheating of subregion to the tail gas stove damages because of local overheat. The temperature measuring cable automatically generates mV signals without an external power supply. The system is simple, convenient and safe to install and maintain. Still have the advantage that the installation is simple and life is high.
Description
Technical Field
The utility model relates to a temperature-detecting device, concretely relates to industry tail waste gas furnace surface temperature detection device.
Background
Based on the environmental protection requirement, the tail gas furnace and the incinerator taking industrial waste gas as raw materials are widely applied to the petrochemical industry and the coal chemical industry. The tail gas furnace and the incinerator are collectively called a tail gas furnace; most tail gas furnaces have the functions of waste gas treatment and heat recovery, and a combustion chamber of the tail gas furnace is generally lined with high-alumina refractory and corrosion-resistant materials. The inner wall of the combustion chamber is constantly washed by heated air waves and corrosive gas, the refractory material can be constantly thinned, the refractory material of the combustion chamber in the furnace is thinned, even the refractory material of the combustion chamber in the furnace drops, the surface temperature of the tail waste gas furnace rises, the strength of the metal outer wall of the pressurized combustion chamber is reduced, the use stress is constantly reduced, and unsafe equipment is caused, so that the surface hot spot of the tail waste gas furnace needs to be detected, and an alarm prompt is given to an operator.
The existing detection device for the hot spot on the surface of the tail waste gas furnace has the problems of complex installation and short service life.
SUMMERY OF THE UTILITY MODEL
The defect to prior art exists, the utility model provides an industry tail waste gas furnace surface temperature detection device can effectively solve above-mentioned problem.
The utility model adopts the technical scheme as follows:
the utility model provides an industrial tail waste gas furnace surface temperature detection device, include: the temperature measuring device comprises a temperature measuring cable (1), a ceramic plug-in (2), a high temperature resistant compensation lead (3), a temperature polling instrument (4) and a fixed point fixing unit (5);
the temperature measuring cable (1) is wound on the surface of the measured tail waste gas furnace (6) in a rotating mode; a plurality of fixed point fixing units (5) are arranged on the surface of the measured tail waste gas furnace (6), and the temperature measuring cable (1) is pressed on the surface of the measured tail waste gas furnace (6) through the fixed point fixing units (5);
the wire end of the temperature measuring cable (1) is plugged into one end of the ceramic plug-in (2); the other end of the ceramic plug-in (2) is connected with one end of the high-temperature-resistant compensation lead (3); the other end of the high-temperature-resistant compensation wire (3) is connected to the temperature polling instrument (4).
Preferably, the temperature measuring cable (1) adopts a K-type surface temperature measuring cable.
Preferably, the ceramic insert (2) is a waterproof high-temperature-resistant ceramic insert.
Preferably, the high-temperature-resistant compensation lead (3) is a K-type pre-installed thermocouple-level compensation lead.
Preferably, the fixing point fixing unit (5) includes: the device comprises a C-shaped pressing plate (5-1), a first nut (5-2), a second nut (5-3) and a screw (5-4);
selecting a fixed point on the surface of the measured tail gas furnace (6); pre-welding the first nut (5-2) at a fixed point; the C-shaped pressing plate (5-1) is arranged on the outer side of the first nut (5-2), and pressing holes matched with the shape of the temperature measuring cable (1) are formed in two ends of the C-shaped pressing plate (5-1) and used for pressing the corresponding part of the temperature measuring cable (1); the center of the C-shaped pressing plate (5-1) is provided with a through hole for the screw rod (5-4) to pass through; one end of the screw rod (5-4) penetrates through the through hole and is screwed into the first nut (5-2); the other end of the screw rod (5-4) is screwed into the second nut (5-3), the second nut (5-3) is screwed to the surface of the C-shaped pressing plate (5-1), and the position of the C-shaped pressing plate (5-1) is fixed through the first nut (5-2), the second nut (5-3) and the screw rod (5-4).
Preferably, the device also comprises a spring gasket (5-5);
the spring gasket (5-5) is sleeved outside the screw rod (5-4) and is positioned outside the through hole of the C-shaped pressing plate (5-1).
The utility model provides an industry tail exhaust gas furnace surface temperature detection device has following advantage:
the utility model provides an industry tail waste gas stove surface temperature detection device, but the temperature in each region of real-time supervision tail gas stove surface can detect the temperature condition of overheating of subregion to the tail gas stove damages because of local overheat. The temperature measuring cable automatically generates mV signals without an external power supply. The system is simple, convenient and safe to install and maintain. Still have the advantage that the installation is simple and life is high.
Drawings
FIG. 1 is a schematic structural view of a device for detecting the surface temperature of an industrial exhaust gas furnace provided by the present invention;
fig. 2 is a schematic structural diagram of the fixed point fixing unit provided by the present invention.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides an industry tail waste gas stove surface temperature detection device, in the practical application process, can realize in time detecting when industry burns burning furnace or tail gas stove combustion chamber surface temperature unusual (drop because of fire-resistant, corrosion-resistant material attenuate), the condition of casualties even is avoided appearing in advance the early warning. Still have the advantage that the installation is simple and life is high.
The utility model provides an industry tail waste gas furnace surface temperature detection device, refer to fig. 1, include: the temperature measuring device comprises a temperature measuring cable 1, a ceramic plug-in 2, a high temperature resistant compensating lead 3, a temperature polling instrument 4 and a fixed point fixing unit 5;
the temperature measuring cable 1 is wound on the surface of the measured tail waste gas furnace 6 in a rotating mode; a plurality of fixed point fixing units 5 are arranged on the surface of the measured tail waste gas furnace 6, and the temperature measuring cable 1 is pressed on the surface of the measured tail waste gas furnace 6 through the fixed point fixing units 5;
the wire end of the temperature measuring cable 1 is plugged into one end of the ceramic plug-in 2; the other end of the ceramic plug-in 2 is connected with one end of a high temperature resistant compensation wire 3; the other end of the high temperature resistant compensation wire 3 is connected to the temperature polling instrument 4.
Following the utility model provides an industry tail exhaust gas furnace surface temperature detection device introduces in detail:
the temperature measuring cable 1 can adopt a K-type surface temperature measuring cable. The K-type surface temperature measuring cable can continuously generate a millivolt signal corresponding to the highest temperature within the length range of the K-type surface temperature measuring cable by utilizing the thermoelectric effect principle, and can be used for continuously detecting the highest temperature of a monitoring area.
The ceramic insert 2 is a waterproof high-temperature-resistant ceramic insert.
The high temperature resistant compensation lead 3 adopts a K-type pre-installed thermocouple (chromium/nickel) grade compensation lead. The inside of the wire is wrapped with a high-temperature-resistant polytetrafluoroethylene-wrapped isolated twisted pair, the twisted pair is wrapped by a stainless steel wire mesh grid, and the outermost sheath is made of polytetrafluoroethylene.
The temperature polling instrument system IS a data acquisition system, can adopt an intrinsically safe remote I/O system IS-RPI, and can be installed in one of remote I/O systems of a danger Zone 1(Division 1).
The fixed unit 5 of fixed point is the core of this application, is designed and is made by high strength stainless steel material, has the effect of clamp plate and reinforcement concurrently, refers to fig. 2, and fixed unit 5 of fixed point includes: the C-shaped pressing plate comprises a C-shaped pressing plate 5-1, a first nut 5-2, a second nut 5-3 and a screw rod 5-4;
selecting a fixed point on the surface of the measured tail gas furnace 6; prewelding a first nut 5-2 at a fixed point; a C-shaped pressing plate 5-1 is arranged on the outer side of the first nut 5-2, and pressing holes matched with the temperature measuring cable 1 in shape are formed in two ends of the C-shaped pressing plate 5-1 and used for pressing corresponding parts of the temperature measuring cable 1; a through hole for the screw rod 5-4 to pass through is formed in the center of the C-shaped pressing plate 5-1; one end of the screw rod 5-4 penetrates through the through hole and is screwed into the first nut 5-2; the other end of the screw rod 5-4 is screwed into a second nut 5-3, the second nut 5-3 is screwed to the surface of the C-shaped pressing plate 5-1, and the position of the C-shaped pressing plate 5-1 is fixed through the first nut 5-2, the second nut 5-3 and the screw rod 5-4.
Also comprises a spring washer 5-5;
the spring washer 5-5 is sleeved outside the screw rod 5-4 and is positioned outside the through hole of the C-shaped pressure plate 5-1.
In practical application, the screws 5-4 adopt stainless steel full-thread M6 screws. The first nut 5-2 and the second nut 5-3 adopt M6 fine-thread nuts.
The utility model provides an industry tail waste gas stove surface temperature detection device, but the temperature in each region of real-time supervision tail gas stove surface can detect the temperature condition of overheating of subregion to the tail gas stove damages because of local overheat. The temperature measuring cable automatically generates mV signals without an external power supply. The system is simple, convenient and safe to install and maintain.
One embodiment is described below:
the whole combustion chamber of the tail gas furnace or the incinerator is taken as 1 temperature measuring area, and the specific installation diagram refers to the figure.
The outer arc temperature measuring cable 1 of the tail gas furnace or the incinerator is wound in a rotating mode, and the distance and the fixed point are controlled to be 100-150 mm. The first nut pitch is about 150 mm.
A fixing point fixing unit 5 including: and a protective layer is laid between the C-shaped pressing plate, the fixing screw rod and the second nut and between the C-shaped pressing plate and the temperature measuring cable. Drawing the position for fixing the first nut of the pre-welded part according to the arrangement diagram of the surface temperature detection points of the tail gas furnace or the incinerator, and welding the first nut of the pre-welded part on the furnace wall by a welder. The number of the first nuts is determined according to the volume of each furnace, and the number of the first nuts is about 200. When the temperature-measuring cable is installed, the C-shaped pressing plate is coated with high-temperature-resistant filler, so that the temperature-measuring cable is better connected with the temperature-measuring cable, and the temperature-measuring cable is easy to be close to a furnace wall.
The temperature measuring cable is laid from the top to the bottom of the tail gas furnace in a parallel inclined angle of 75 degrees, and covers the surface of the tail gas furnace in a 360-degree manner. And welding a first nut on the surface of the container according to the layout, and fixing the temperature measuring cable by using a C-shaped guide rail pressing plate so that the temperature measuring cable is in good contact with the surface of the furnace body.
The temperature measuring cable can automatically and continuously generate millivolt signals corresponding to the temperature of the highest temperature point within the length range of the temperature measuring cable by utilizing the thermoelectric effect principle. It is different from the common thermocouple in that: its hot junction is not fixed but always corresponds to the highest temperature point on the cable, when the temperature at any point on the cable (T1) is higher than that at other parts, the insulation resistance (R) between the thermocouple wires at that point decreases, resulting in the appearance of a "temporary" thermocouple junction, which acts the same as a conventional single-junction thermocouple junction, and when the temperature at another point on the cable (T2) is higher than that at (T1), the insulation resistance between the thermocouple wires at that point becomes lower than that at (T1), resulting in the appearance of a new "temporary" thermocouple junction.
The temperature patrol instrument of the temperature detection device is connected with a ceramic joint of the temperature measurement cable through a compensation wire, the temperature measurement cable can generate a millivolt signal, the temperature patrol instrument can convert the reading of the millivolt signal into corresponding temperature to be displayed on a secondary meter, meanwhile, the temperature patrol instrument can output a standard current signal of 4-20 ma corresponding to the temperature and is received by a DCS, when the surface temperature of the tail gas furnace fluctuates, a corresponding temperature reading can be generated on a DCS picture, and an operator can monitor the running condition of the tail gas furnace at any moment according to the change of the temperature.
The utility model provides an industrial tail waste gas furnace surface temperature detection device has following advantage:
1. the application provides an industry tail waste gas stove surface temperature detection device, for the pioneering application in petrochemical industry and coalification industry, filled the blank that small-size tail waste gas stove surface temperature detection device field was used in the trade.
2. A C-type thermocouple wire fixation splint, namely: the C-shaped pressing plate can stabilize the thermocouple wire routing position and play the role of a fixture fixing bolt, and can also realize the function of double-wire parallel wiring.
3. The device can quickly reflect that the temperature of a specific part is abnormal when the refractory material of a combustion chamber of the tail gas furnace is thinned or falls off (1, the local temperature is gradually increased; 2, the temperature of a certain point is suddenly increased), and personnel of a production system can make a plan for strengthening monitoring operation or stopping and overhauling according to alarm or prompt, so that the occurrence of events of equipment damage or casualties is avoided.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be viewed as the protection scope of the present invention.
Claims (6)
1. The utility model provides an industry tail waste gas furnace surface temperature detection device which characterized in that includes: the temperature measuring device comprises a temperature measuring cable (1), a ceramic plug-in (2), a high temperature resistant compensation lead (3), a temperature polling instrument (4) and a fixed point fixing unit (5);
the temperature measuring cable (1) is wound on the surface of the measured tail waste gas furnace (6) in a rotating mode; a plurality of fixed point fixing units (5) are arranged on the surface of the measured tail waste gas furnace (6), and the temperature measuring cable (1) is pressed on the surface of the measured tail waste gas furnace (6) through the fixed point fixing units (5);
the wire end of the temperature measuring cable (1) is plugged into one end of the ceramic plug-in unit (2); the other end of the ceramic plug-in (2) is connected with one end of the high-temperature-resistant compensation lead (3); the other end of the high-temperature-resistant compensation wire (3) is connected to the temperature polling instrument (4).
2. The industrial exhaust gas furnace surface temperature detection device according to claim 1, wherein the temperature measurement cable (1) is a K-type surface temperature measurement cable.
3. The industrial exhaust gas furnace surface temperature detection device according to claim 1, wherein the ceramic insert (2) is a waterproof high-temperature-resistant ceramic insert.
4. The industrial exhaust gas furnace surface temperature detection device according to claim 1, wherein the high temperature resistant compensation lead (3) is a K-type pre-installed thermocouple grade compensation lead.
5. The industrial exhaust gas furnace surface temperature detecting apparatus according to claim 1, wherein the fixed point fixing unit (5) includes: the device comprises a C-shaped pressing plate (5-1), a first nut (5-2), a second nut (5-3) and a screw (5-4);
selecting a fixed point on the surface of the measured tail gas furnace (6); pre-welding the first nut (5-2) at a fixed point; the C-shaped pressing plate (5-1) is arranged on the outer side of the first nut (5-2), and pressing holes matched with the shape of the temperature measuring cable (1) are formed in two ends of the C-shaped pressing plate (5-1) and used for pressing the corresponding part of the temperature measuring cable (1); the center of the C-shaped pressing plate (5-1) is provided with a through hole for the screw rod (5-4) to pass through; one end of the screw rod (5-4) penetrates through the through hole and is screwed into the first nut (5-2); the other end of the screw rod (5-4) is screwed into the second nut (5-3), the second nut (5-3) is screwed to the surface of the C-shaped pressing plate (5-1), and the position of the C-shaped pressing plate (5-1) is fixed through the first nut (5-2), the second nut (5-3) and the screw rod (5-4).
6. The industrial exhaust gas furnace surface temperature detecting device according to claim 5, further comprising a spring washer (5-5);
the spring gasket (5-5) is sleeved outside the screw rod (5-4) and is positioned outside the through hole of the C-shaped pressing plate (5-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220429359.0U CN216846585U (en) | 2022-03-01 | 2022-03-01 | Surface temperature detection device for industrial tail waste gas furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220429359.0U CN216846585U (en) | 2022-03-01 | 2022-03-01 | Surface temperature detection device for industrial tail waste gas furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216846585U true CN216846585U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220429359.0U Active CN216846585U (en) | 2022-03-01 | 2022-03-01 | Surface temperature detection device for industrial tail waste gas furnace |
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| CN (1) | CN216846585U (en) |
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- 2022-03-01 CN CN202220429359.0U patent/CN216846585U/en active Active
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