Blast furnace blow-off valve monitoring device

Abstract

The utility model discloses a blast furnace blow-off valve monitoring device which comprises a first infrared camera used for collecting first infrared imaging information and a first temperature value at a valve cover of a blow-off valve; the second infrared camera is used for collecting second infrared imaging information and a second temperature value at the valve body of the blow-off valve; the signal transmitter is connected with the output end of the first infrared camera and the output end of the second infrared camera; and the operation terminal is connected with the signal transmitter and is used for receiving the first infrared imaging information, the first temperature value, the second infrared imaging information and the second temperature value. According to the device, on the basis of ensuring the safety of operating personnel, real-time online monitoring can be carried out on the blow-off valve, abnormity can be found in time, and omnibearing monitoring on the blow-off valve can be realized with relatively low cost.

Description

Technical Field

[0001] The utility model relates to the technical field of iron and steel production, in particular to a monitoring device for a blast furnace relief valve. Background Art

[0002] The blast furnace relief valve is an important device to ensure the stability of the blast furnace top pressure. During normal production, the relief valve is in a normally closed state. The relief valve is pressed and locked by a set of hydraulic devices to ensure the stability of the blast furnace top pressure.

[0003] Currently in China, increasing the top pressure is an effective means of intensifying the smelting of blast furnaces, which has reached a consensus in the industry. After the blast furnace top pressure is increased, higher requirements are put forward for the pressure-holding ability of the relief valve. Once the blast furnace top pressure fluctuates instantaneously to the maximum pressure value at which the relief valve operates, the relief valve will open and the top pressure will drop instantaneously. To avoid serious accidents in the furnace, the blast furnace workers are forced to reduce the air volume and change to normal pressure, or even stop the air supply; moreover, to tighten the relief valve again, the blast furnace needs to be depressurized and ventilated, which brings difficulties to the normal operation of the blast furnace workers. When the blast furnace relief valve is operating online, whether it can press and lock the valve port is related to the stability of the blast furnace top pressure and the smooth operation of the furnace condition. Therefore, the online monitoring of the blast furnace relief valve is particularly important. Summary of the Utility Model

[0004] The utility model provides a monitoring device for a blast furnace relief valve, which can perform real-time online monitoring on the relief valve on the basis of ensuring the safety of operating personnel, can timely detect abnormalities, and realize all-round monitoring of the relief valve at a low cost, which is beneficial to ensuring the stable operation of the blast furnace.

[0005] In order to achieve the above object, the technical solutions provided by the embodiments of the utility model are as follows:

[0006] The utility model provides a monitoring device for a blast furnace relief valve, including: a first infrared camera, which is used to collect the first infrared imaging information and the first temperature value at the valve cover of the relief valve; a second infrared camera, which is used to collect the second infrared imaging information and the second temperature value at the valve body of the relief valve; a signal transmitter, which is connected to the output end of the first infrared camera and the output end of the second infrared camera; an operation terminal, which is connected to the signal transmitter and is used to display the first infrared imaging information, the first temperature value, the second infrared imaging information and the second temperature value.

[0007] Preferably, the operation terminal further includes a signal receiver, and the signal receiver is connected to the signal transmitter.

[0008] Preferably, the operation terminal further includes an alarm, and the alarm is connected to the signal receiver.

[0009] Preferably, the operation terminal further includes a display, and the display is connected to the signal receiver.

[0010] Preferably, the first infrared camera is an infrared night vision camera.

[0011] Preferably, the second infrared camera is an infrared night vision camera.

[0012] Preferably, the device further includes a blow-off valve controller for controlling the opening or closing of the blow-off valve, and the blow-off valve controller is connected to the operation terminal.

[0013] Preferably, the first infrared camera is mounted above the valve cover of the blow-off valve through a first bracket.

[0014] Preferably, the second infrared camera is mounted below the valve body of the blow-off valve through a second bracket.

[0015] Preferably, the first infrared camera and the second infrared camera are arranged opposite to each other.

[0016] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0017] A blast furnace blow-off valve monitoring device provided in an embodiment of the present utility model includes: a first infrared camera is arranged at the valve cover of the blow-off valve for collecting first imaging information and a first temperature value at the valve cover, and a second infrared camera is arranged at the valve body of the blow-off valve for collecting second imaging information and a second temperature value at the valve body; the operation terminal displays all the imaging information and all the temperature values, so that the staff can timely check the infrared imaging condition and temperature condition around the blow-off valve, realizing all-day online monitoring. This monitoring method has the advantages of high sensitivity, low cost, strong timeliness, and comprehensive monitoring range. For leakage problems caused by loose closure of the blow-off valve or insufficient pressure-holding ability of the blow-off valve, good monitoring can be achieved, which is beneficial to ensuring the stable and effective online operation of the blast furnace blow-off valve. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of a blast furnace blow-off valve monitoring device provided in an embodiment of the utility model;

[0020] Figure 2 The structural schematic diagram of an infrared camera provided for an embodiment of the utility model.

[0021] Among them, the reference numerals are respectively:

[0022] The first infrared camera 101; the second infrared camera 102; the signal transmitter 103; the operation terminal 104; the relief valve cover 201; the relief valve body 202. Specific embodiments

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] In the description of the present utility model, it should also be noted that unless otherwise clearly defined and limited, the terms "arrangement" and "connection" should be understood in a broad sense. For example, "connection" can be a direct connection or an indirect connection through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0025] In this article, relative terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0026] Due to the problem that the relief valve is installed on the top of the blast furnace and real-time manual inspection cannot be achieved, the current online monitoring of the blast furnace relief valve only has remote video monitoring images. During the online operation of the relief valve, when using the remote video monitoring method, the applicant found that problems such as whether the valve cover of the relief valve is tightly fastened, whether there are high-temperature weak points on the valve cover and valve body of the relief valve, whether the relief valve is operating with problems, and whether the pressure-holding capacity is sufficient cannot be detected in time from the remote video images. Moreover, the monitoring images of the relief valve at night are not clear, and the real-time situation of the relief valve cannot be obtained, so abnormalities cannot be detected in time.

[0027] Regarding the problem that the remote video device does not have a temperature measurement function, the relief valve is not tightly closed or the pressure-holding capacity of the relief valve is insufficient, and a very small amount of gas escapes, which cannot be seen from the video image in time; and the night vision function of the remote video device is not good, resulting in unclear monitoring images of the relief valve at night. In view of the above technical defects, this application is proposed to provide a monitoring device for a blast furnace relief valve that overcomes the above problems or at least partially solves the above problems.

[0028] As Figure 1 shown, the monitoring device for a blast furnace relief valve provided by an embodiment of the present invention includes:

[0029] A first infrared camera 101, which is used to collect the first infrared imaging information and the first temperature value at the valve cover 201 of the relief valve; a second infrared camera 102, which is used to collect the second infrared imaging information and the second temperature value at the valve body 202 of the relief valve; a signal transmitter 103, which is connected to the output ends of the first infrared camera 101 and the second infrared camera 102; and an operation terminal 104, which is connected to the signal transmitter 103 and is used to receive the first infrared imaging information, the first temperature value, the second infrared imaging information, and the second temperature value.

[0030] Specifically, as Figure 2 shown, the first infrared camera 101 can be installed above the valve cover 201 of the relief valve through a first bracket to collect the first infrared imaging information and the first temperature value at the valve cover. The second infrared camera 102 can be installed below the valve body 202 of the relief valve through a second bracket to collect the second infrared imaging information and the second temperature value at the valve body.

[0031] Among them, the first bracket and the second bracket can be the original columns of the blast furnace or other brackets that can support the infrared camera. The upper area refers to the area around the relief valve where the installation height is higher than or equal to the valve cover 201 of the relief valve. The first infrared camera 101 is aligned with the valve cover 201 of the relief valve for monitoring. The lower area refers to the area around the relief valve where the installation height is lower than or equal to the valve body 202 of the relief valve. The second infrared camera 102 is aligned with the valve body 202 of the relief valve for monitoring.

[0032] Further, in order to achieve a full - range and dead - angle - free detection of the relief valve, the first infrared camera 101 and the second infrared camera 102 can be oppositely arranged.

[0033] Of course, as other alternative embodiments, the first infrared camera 101 and the second infrared camera 102 can also be arranged in other areas around the relief valve.

[0034] For example, the signal transmitter 103 can be a 2G / 3G / 4G / 5G network communication module, a Bluetooth communication module, a WIFI communication module, or a ZigBee communication module. The operation terminal 104 can be a PC (Personal Computer), or a mobile terminal such as a laptop computer, a tablet computer, or a smart phone, etc.

[0035] In a specific embodiment, the operation terminal 104 can further include a signal receiver (not shown in the figure), and the signal receiver is connected to the signal transmitter 103. The signal receiver receives the data transmitted by the signal transmitter 103 or reads the data transmitted by the signal transmitter 103 to the cloud.

[0036] When the imaging information or the temperature value is abnormal, in order to timely remind the staff, the operation terminal 104 can further include an alarm, and the alarm is connected to the signal receiver. When at least one of the first infrared imaging information, the first temperature value, the second infrared imaging information, and the second temperature value is abnormal, an alarm prompt is given. Among them, the alarm can be an audible and visual alarm.

[0037] For example, when the first temperature value and / or the second temperature value is greater than 200 °C, an alarm prompt is given; when the first infrared imaging information and / or the second infrared imaging information contains a thermal imaging signal, an alarm prompt is given.

[0038] Specifically, when the relief valve does not maintain pressure and the valve cover cannot be fastened tightly, a very small amount of high - temperature gas will spurt out, and the temperature at this point will rise instantly. When the temperature rises above 200 °C, the alarm is triggered to alarm, and the staff can discover it in the first time and take necessary control measures to prevent the accident from developing and expanding.

[0039] In order to quickly judge the fault problem, the alarm can further include a first alarm and a second alarm. Both the first alarm and the second alarm are connected to the signal receiver. When the first temperature value and / or the second temperature value is abnormal, the first alarm gives an alarm prompt. When the first infrared imaging information and / or the second infrared imaging information is abnormal, the second alarm gives an alarm prompt. Among them, both the first alarm and the second alarm are light alarms. The first alarm emits red light, and the second alarm emits yellow light.

[0040] The operation terminal 104 further includes a display, which is connected to the signal receiver and is used to display the first infrared imaging information, the first temperature value, the second infrared imaging information, and the second temperature value, facilitating the staff to view.

[0041] In order to enable the monitoring device to also have a good monitoring function at night, the first infrared camera 101 and the second infrared camera 102 provided in this application are both infrared night vision cameras. The video images of the infrared night vision cameras have night vision functions, and the night monitoring of the blow-off valve is clear and effective.

[0042] Furthermore, in order to quickly process abnormal signals, the monitoring device may further include a blow-off valve controller, which is used to control the opening or closing of the blow-off valve. The blow-off valve controller is connected to the operation terminal 104.

[0043] Specifically, when the blow-off valve is abnormal, the staff can control the pressure reduction of the blast furnace through the operation terminal 104, and then control the blow-off valve controller to enable the blow-off valve to open or close normally.

[0044] In addition, when the blast furnace is under maintenance or temporarily stopped for blowing and the blow-off valve needs to be routinely opened and closed, the alarm program can be cancelled to prevent false alarms.

[0045] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the specification drawings and specific implementation manners.

[0046] During normal production, the blast furnace blow-off valve is in a normally closed state. The first infrared camera 101 and the second infrared camera 102 are used to aim at the blow-off valve for real-time monitoring and temperature measurement. The first infrared camera 101 is arranged around the valve cover 201 of the blow-off valve, and the second infrared camera 102 is arranged around the valve body 202 of the blow-off valve. The infrared imaging information and the temperature value are sent to the operation terminal 104. The staff can timely observe the working condition of the blow-off valve through the high-definition infrared images and deal with any abnormalities in a timely manner. When the temperature of the valve cover or the valve body is greater than 200 °C, the alarm program is started. If the blow-off valve does not maintain pressure, the valve cover is not tightly fastened, and a very small amount of high-temperature gas is ejected, the temperature at this point will instantly rise above 200 °C, triggering the alarm of the infrared monitoring system, and the blast furnace workers can discover it in the first time. The video images of the infrared monitoring system have night vision functions, and the night monitoring of the blow-off valve is clear and effective. The infrared cameras have infrared imaging, temperature measurement, and night vision functions, and can monitor the online operation status of the blow-off valve in real time. Thus, it effectively solves the problems that when the blast furnace blow-off valve is in online operation, it is impossible to timely discover whether the valve body 202 of the blow-off valve maintains pressure, whether there are weak points on the valve body, and whether the valve cover is tightly fastened, and solves the problem of unclear night monitoring of the blast furnace blow-off valve, ensuring the stable and effective online operation of the blast furnace blow-off valve.

[0047] In summary, the blast furnace relief valve monitoring device provided by this embodiment can perform real-time online monitoring of the relief valve on the basis of ensuring the safety of operating personnel, can promptly detect abnormalities, and achieve all-round monitoring of the relief valve at a relatively low cost, which is beneficial to ensuring the stable operation of the blast furnace.

[0048] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0049] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A blast furnace blowdown valve monitoring device, characterized in that: include: A first infrared camera, the first infrared camera is used to collect first infrared imaging information and a first temperature value at the valve cover of the relief valve; A second infrared camera, the second infrared camera is used to collect second infrared imaging information and a second temperature value at the valve body of the relief valve; A signal transmitter connected to an output end of the first infrared camera and an output end of the second infrared camera; An operation terminal is connected to the signal transmitter and is used to receive the first infrared imaging information, the first temperature value, the second infrared imaging information and the second temperature value.

2. The device according to claim 1, characterized in that The operation terminal also includes a signal receiver, and the signal receiver is connected to the signal transmitter.

3. The device according to claim 2, characterized in that The operation terminal also includes an alarm, and the alarm is connected to the signal receiver.

4. The device according to claim 3, characterized in that The operation terminal further includes a display, and the display is connected to the signal receiver.

5. The device according to claim 1, characterized in that The first infrared camera is an infrared night vision camera.

6. The device according to claim 1, characterized in that The second infrared camera is an infrared night vision camera.

7. The device according to claim 1, characterized in that Also includes: A relief valve controller, the relief valve controller is used to control the opening or closing of the relief valve, and the relief valve controller is connected to the operation terminal.

8. The device according to claim 1, characterized in that The first infrared camera is installed on the upper area of ​​the relief valve cover through a first bracket.

9. The device according to claim 8, characterized in that The second infrared camera is installed in the lower area of ​​the relief valve body through a second bracket.

10. The device according to claim 9, characterized in that The first infrared camera and the second infrared camera are arranged opposite to each other.

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